CN1743135B - Screwing control method of electric rotating tool and apparatus thereof - Google Patents
Screwing control method of electric rotating tool and apparatus thereof Download PDFInfo
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- CN1743135B CN1743135B CN 200510091300 CN200510091300A CN1743135B CN 1743135 B CN1743135 B CN 1743135B CN 200510091300 CN200510091300 CN 200510091300 CN 200510091300 A CN200510091300 A CN 200510091300A CN 1743135 B CN1743135 B CN 1743135B
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Abstract
The invention provides a method and a device for controlling screw-fastening in an electric rotating tool for automatically attaining a screw fastening work for selecting a required screw from a plurality of screws by an electric driver with optimum screw-fastening torque. A load current value or a voltage value of an electric motor corresponding to each of screw-fastening torque values for performing the optimum screw-fastening according to the plurality of screws is set in advance. When the selected screw is taken out of a screw supply means, a signal for discriminating the type of the screw is generated. The load current value or the voltage value of the electric motor corresponding to the screw-fastening torque value for performing the optimum screw-fastening in relation to the selected screw is automatically selected and set. A driving stop control following the completion of the screw-fastening with the optimum screw-fastening torque by the electric motor is performed.
Description
Technical field
The present invention relates to the stubborn screw control method and the controlling organization of electric rotating tool, it is using the electronic tool electric rotating tools such as (electric screw drivers) that revolves required screw mounting object thing to be carried out in the stubborn screw operation of installation of screw etc., for example suitably selecting the different multiple screw of screw diameter, use the general electronic tool that revolves to twist under the situation of screw operation, by automatically carrying out electronic stubborn screw torque settings of revolving tool to become and predefined stubborn screw torque value, thereby can realize best stubborn screw operation all the time according to the kind of screw according to the kind of selected screw.
Background technology
In the past, the applicant had developed and can stop electronic driving of revolving tool automatically by electricity and carry out supply unit and the stubborn screw of torque control and revolve the combined screw tightening device that forms of tool with electronic, and had obtained patent (with reference to patent documentation 1).
Promptly, the screw tightening device that possesses auto-stopper that this patent documentation 1 is put down in writing, constitute as follows, promptly, transformer is set and fairing provides DC voltage, and the outlet side of above-mentioned fairing connect can variable adjustment constant voltage circuit, simultaneously on the DC voltage output line, connect load resistance, relatively because the load current of motor flows through potential difference that this load resistance produces and by the predetermined constant voltage of above-mentioned constant voltage circuit setting, when the load current that flows through above-mentioned load resistance becomes overload current more than the predetermined value and mobile certain time, this overload current is charged to capacitor, starter relay cuts off circuit when the charging voltage of capacitor reaches predetermined value, and the on-off circuit that constitutes in the mode that keeps the action of above-mentioned relay in the discharge time of above-mentioned capacitor is set, this on-off circuit is connected is built-in with motor, and have on the electronic power supply that revolves tool that revolves the tool rotating shaft that drives by said motor rotation.
According to the screw tightening device that possesses auto-stopper that constitutes by this way, above-mentioned patent documentation 1 is put down in writing, in stubborn screw operation, always can reach tightening of final stubborn screw with the torque of the best, in this operation, do not need simultaneously skilled, and do not worry fully can be on motor for a long time stream electric current is arranged, be to have to improve the electronic device that revolves the various advantages such as life-span of tool therefore.
In addition, the applicant, developed with a kind of auto-stopper be connected electrically in twist screw with electronic revolve on the tool screw tightening device of formation, and obtained utility model patent (with reference to patent documentation 2), wherein said auto-stopper, be when being applied to the external load of revolving in the tool rotating shaft and having reached scheduled volume, carry out torque control, simultaneously through recovering the auto-stopper of energising behind the certain hour with regard to automatically cutting off to electronic energising of revolving tool.
Promptly, the screw tightening device that possesses auto-stopper that this patent documentation 2 is put down in writing, has following formation, promptly, drivenly by the rotation of this electro-motor revolve the electronic of tool rotating shaft and revolve in the tool being built-in with electro-motor and having, on the electrical motor driven power line, connect and dispose the auto-stopper that overload current testing circuit and on-off circuit are combined, wherein said overload current testing circuit, be after the driving of electro-motor, when the load current that flows through power line is varied to overload current more than the predetermined value because of being applied to the above-mentioned external loading that revolves in the tool rotating shaft, detect the overload current testing circuit of this state variation, said on-off circuit, be to cut off the energising of electrical motor driven power line, constitute in mode simultaneously through recovery energising behind the certain hour with the action that responds this testing circuit.Thereby, in that constitute, that above-mentioned patent documentation 2 is put down in writing the like this screw tightening device that possesses auto-stopper, also can obtain the identical advantage of being put down in writing with above-mentioned patent documentation 1 of screw tightening device.
On the other hand, in the past, also proposed various with electronic when revolving tool etc. and twisting the screw operation, can simultaneously make required screw be fastened on the front end that revolves tool cutter head (driver bit), the one side carry out simply screw taking-up the screw feed mechanism (for example, with reference to patent documentation 3), and with its practicability.
Yet, the screw feed mechanism that above-mentioned patent documentation 3 is put down in writing, (1) as follows, promptly, upper surface along ejecting mechanism (シ ユ one タ) is provided with slit, the head of Screw class is slided on the upper surface of ejecting mechanism, axial region is moved in above-mentioned slit, the Screw class is offered in the feedway of the Screw class that the mode of extracting position constitutes by above-mentioned ejecting mechanism, (2) be provided with the cutter head guidance part that the cutter head of tool is revolved in guiding on the top of above-mentioned extracting position, (3) are provided with the engaging part that makes the Screw class that forwards always moves to above-mentioned extracting position stop at this extracting position simultaneously, (4) the above-mentioned cutter head portion of drawing has 3 guide cards that horizontal cross sectional geometry roughly becomes コ word shape, with these 3 guide cards with from the top downwards gradually the mode of constriction form, the centering position mouth of configuration directly over the lower end of these 3 guide cards is provided with near above-mentioned extracting position, and be provided with make as these roughly become the side in above-mentioned the place ahead of 3 guide cards of コ word shape spread all over this cutter head guidance part open wide endlong up and down roughly fall trapezoidal otch.
In addition, (5) above-mentioned engaging part constitutes in such a way, promptly, always also to be kept to the position application of force of reversing that the Screw class is stopped on the above-mentioned extracting position, and make the Screw class from above-mentioned extracting position further when move in above-mentioned the place ahead, can overcome the above-mentioned application of force and to not making the Screw class stop at constituting toward moving mode on the above-mentioned extracting position toward moving position, (6) and be constituted as, when the Screw class that forwards always moves to above-mentioned extracting position when the upper surface along above-mentioned ejecting mechanism stops at this extracting position by above-mentioned engaging part, guide to above-mentioned centering position mouth by the cutter head that revolves tool that above-mentioned 3 guide cards of above-mentioned cutter head guidance part will descend from the not ad-hoc location of the top of above-mentioned extracting position, simultaneously can be with this cutter head at above-mentioned centering position mouth with respect to above-mentioned extracting position centering position, thereby make on its Screw class that is fastened on this extracting position from the top by magnet absorption.
And, (7) has following formation, promptly, by drawing to above-mentioned the place ahead of this cutter head guidance part by the above-mentioned otch of the cutter head after the engaging of above-mentioned magnet absorption realization from above-mentioned cutter head guidance part, thereby make above-mentioned engaging part to above-mentioned past moving, the Screw class that is stuck close on this cutter head by magnet absorption can be taken out to above-mentioned the place ahead of above-mentioned extracting position simultaneously toward moving position.
The screw feed mechanism of being put down in writing according to the above-mentioned patent documentation 3 that constitutes by this way, as long as by making the cutter head that revolves tool this 1 operation that descends roughly and simply, just can cutter head correctly be fastened on the head of Screw class of extracting position by the cutter head guidance part, simultaneously, at this moment, particularly since as roughly become with the horizontal cross sectional geometry of cutter head guidance part コ word shape and from above the side in the place ahead of 3 guide cards forming of the mode of constriction gradually downwards, be provided with on the total length up and down of cutter head guide rail open wide roughly fall trapezoidal breach, therefore thereby can not only be used to make cutter head to insert the Screw class that is fastened on extracting position in the cutter head guidance part soon but also successfully, and this a succession of operation of after this engaging, by cutter head the Screw class being taken out to the place ahead of extracting position, can carry out the taking-up operation of Screw class expeditiously.
And then, revolving automatically in the tool device in the past, under the different situation of the kind of screw or this mounting object thing, owing to can only adjust the value of fastening torque simply, therefore occur as inferior undesirable condition, for example under the situation of the less screw of fastening diameter, the fastening torque that is applied on the screw substantially exceeds setting value, thereby just on screw head, applied bigger stress (pressure), in addition, under the situation of the less screw of fastening diameter, be applied to fastening torque on the screw below setting value, can not carry out the sufficient fastening etc. of screw.
From this viewpoint, the automatic screw tightening method and the device (with reference to patent documentation 4) that can carry out best stubborn screw control according to the kind of screw have been proposed with predefined fastening torque automatically in the automatic screw tightening device of the different multiple screw of trip bolt diameter.
Promptly, the automatic screw tightening method that above-mentioned patent documentation 4 is put down in writing, set in such a way, promptly, with predefined fastening torque automatically in the automatic screw tightening method of the different multiple screw of trip bolt diameter, (a) before screw is in place, based on selected screw kind from above-mentioned multiple screw and the above-mentioned fastening torque that sets, according to screw kind that screw diameter the is big optimum speed optimum speed set of more little mode just then, make above-mentioned screw rotation with the rotating torques below the fastening torque of above-mentioned setting, (b) after screw is in place, according to above-mentioned selected screw kind, according to screw kind that screw diameter the is big rising time behavior of the above-mentioned rotating torques set of mode more slowly just of rotating torques then, one side makes above-mentioned rotating torques rise to the fastening above-mentioned screw of fastening torque one side of above-mentioned setting.
In addition, the automatic screw tightening device that above-mentioned patent documentation 4 is put down in writing, be with predefined fastening torque automatically in the automatic screw tightening device of the different multiple screw of trip bolt diameter, having possessed device as described below constitutes: the rotating mechanism that (c) makes above-mentioned screw rotation, (d) according to the screw kind of from above-mentioned multiple screw, selecting and the fastening torque of above-mentioned setting, with screw kind that screw diameter is big then optimum speed just more little mode set the optimum speed setting device of above-mentioned optimum speed, (e) output makes the constant speed controlling organization of the constant speed control signal of above-mentioned rotating mechanism constant speed rotation with above-mentioned optimum speed, (f) according to the screw kind of above-mentioned selection, according to screw kind that screw diameter the is big rising time behavior of the rotating torques of the above-mentioned rotating mechanism set of mode more slowly just of rotating torques then, the rising controlling organization that the rising of the above-mentioned constant speed control signal when making screw in place changes, (g) the above-mentioned constant speed control signal of restriction is in order to avoid the rotating torques of above-mentioned rotating mechanism surpasses the torque limit mechanism of the fastening torque of above-mentioned setting.
According to what constitute by this way, automatic screw tightening method and device that above-mentioned patent documentation 4 is put down in writing, before screw is in place, with the screw kind of from multiple screw kind, selecting by basis and the fastening torque of setting, with screw kind that screw diameter is big then optimum speed just the rotating torques below the fastening torque set of the optimum speed set of more little mode make the screw rotation, after screw is in place, according to screw kind according to selection, with screw kind that screw diameter the is big rising time behavior of the rotating torques set of mode more slowly just of rotating torques then, one side makes rotating torques rise to the fastening above-mentioned screw of fastening torque one side of setting, therefore can carry out best stubborn screw control according to the different screw kind of screw diameter.
Patent documentation 1: Japanese Patent Publication 53-15240 communique
Patent documentation 2: the real public clear 53-47677 communique of Japan
Patent documentation 3: the special fair 4-35306 communique of Japan
Patent documentation 4: Japanese kokai publication hei 4-2473 communique
Now, in the assembling procedure of the various goods of various industrial circles, it is very important twisting the screw operation.For example, in goods assembling procedure in the past, when carrying out these stubborn screw operations, general is when using the different multiple screw of screw diameter, prepare to have preestablished the many electronic tools that revolve of stubborn screw torque value in advance according to the kind of screw, the operator uses the electronic tool that revolves that is set with the matched stubborn screw torque value of selected screw when selecting screw, twist the screw operation.
Yet, in so stubborn screw operation, prepare the many electronic tools that revolve in advance, and distinguish according to the kind of screw and to use electronic way of revolving tool, make operator's miscellaneousization of operation, operating efficiency is reduced, be easy to generate the operation error simultaneously, for example also exist as inferior difficult point, that is, because selected screw and the electronic tool that revolves are not suitable for, the screw torque value surpasses or deficiency because of twisting, can not reach suitable stubborn screw, occur assembly failure goods etc. easily.
From this viewpoint, in the past, even if thereby also proposed to be made for for the different multiple screw of screw diameter also at an easy rate fit twist the scheme of revolving the tool cutter head of the cutter head shape of screw operation.And, following such automatic screw tightening device has also been proposed, this automatic screw tightening device is set to, utilization possesses so electronic tool that revolves that revolves the tool cutter head, carry out as above-mentioned patent documentation 4 is open, with the predefined fastening torque screw of the different a plurality of screw kinds of trip bolt diameter automatically.
In above-mentioned patent documentation 4 disclosed automatic screw tightening devices, mechanism as the kind of judging the multiple screw that screw diameter is different, constitute as follows, promptly, setting has preestablished the control module of fastening torque according to every kind of screw, screw kind selector switch is set on this control module simultaneously, when screw that the operator selects to use in advance, selects these screw kind selector switches of operation respectively.Thereby, in this automatic screw tightening device, have by 1 and electronicly revolve stubborn screw operation such multifunctionality that tool just can carry out the different multiple screw of screw diameter rightly according to the screw kind of having selected respectively.
But, in the goods assembling procedure, from multiple screw, select continually under the situation of the so stubborn screw operation of required screw carrying out, under above-mentioned situation with polyfunctional automatic screw tightening device, must switch operation screw kind selector switch continually, there are miscellaneousization of operation and the reduction of operating efficiency, occur problems such as operation error simultaneously easily.And, above-mentioned automatic screw tightening device, when twisting the setting of screw torque according to electronic size of revolving the rotating speed of tool, the setting of having carried out making the characteristic of the rotating torques behind screw in place to change etc. especially, the design of controlling organization becomes miscellaneous, and the whole manufacturing cost of device also has the tendency of increase.
So, the present inventor, various researchs and trial-production have been carried out repeatedly, the result has successfully developed a kind of stubborn screw control method and device of electric rotating tool, it is in the assembling procedure of the goods that carry out selecting continually the so stubborn screw operation of required screw from a plurality of screw kinds, can be with 1 electronic tool that revolves, twist the screw operation with suitable stubborn screw torque accordingly and simply and easily with the screw kind of having selected respectively.
That is, in the present invention, be provided with a kind of electric rotating tool, it possesses; Rotation drives the electro-motor of throw; Detect the load current testing agency of the load current of this electro-motor; Drive the driving switch of the Drive and Control Circuit of the above-mentioned electro-motor of control; And controlling organization, this controlling organization is constituted as, rotate the above-mentioned electro-motor of driving according to the operation of above-mentioned driving switch, when having surpassed predefined setting value, carry out the driving that the stubborn screw along with above-mentioned electro-motor finishes and stop control by the detected load current of above-mentioned load current testing agency.
And, in above-mentioned controlling organization, with the kind of a plurality of screws of being twisted the screw operation accordingly, preestablish respectively and the stubborn screw torque value of the stubborn screw that is used to carry out each the best load current value or the magnitude of voltage of corresponding electro-motor respectively.
In addition, constitute in such a way, promptly, selecting to take out the multiple screw of being twisted the screw operation respectively from the screw feed mechanism of supplying with according to the kind of each screw when, when the screw that takes out selected from the screw feed mechanism, produce the signal of the kind of differentiating screw, and according to the signal of the kind of differentiating this screw, automatically select to set and the load current value or the magnitude of voltage that are used to carry out with respect to the corresponding above-mentioned electro-motor of stubborn screw torque value of the stubborn screw of above-mentioned the best of selected screw, the driving that the stubborn screw of following the best of being undertaken by electro-motor to twist the screw torque is finished stops control.
Stubborn screw control method and device according to the electric rotating tool of the present invention of such formation, can eliminate the problem in the above-mentioned automatic screw tightening device in the past at one stroke, and can be with automatic and shirtsleeve operation, the stubborn screw operation of the screw-driving that the operation error can not take place and realize extremely expeditiously respectively will from multiple screw, selecting with appropriate stubborn screw torque, and then the device formation is also simple, thereby can realize reducing cost.
Summary of the invention
Therefore, the objective of the invention is to, a kind of stubborn screw control method and device of electric rotating tool are provided, it can utilize 1 electronic tool that revolves, respectively with appropriate stubborn screw torque, automatically and with shirtsleeve operation, the operation error can not take place, realize the stubborn screw operation of selecting required screw so continually extremely expeditiously from multiple screw, thereby and can make and simple in structurely make at low cost.
In order to reach above-mentioned purpose, the control method of the stubborn screw of technical scheme 1 described electric rotating tool of the present invention, it is characterized in that, use the electric rotating tool that constitutes as follows, promptly, drive throw by the electro-motor rotation, detect the load current of this electro-motor by load current testing agency, and drive the Drive and Control Circuit of the above-mentioned electro-motor of control by driving switch, and carry out following driving and stop control: when having surpassed the setting value that has preestablished by the detected load current of above-mentioned load current testing agency, finish the stubborn screw of above-mentioned electro-motor;
According to the kind of a plurality of screws of being twisted the screw operation, preestablish the load current value or the magnitude of voltage of the electro-motor corresponding with being used to carry out best separately stubborn screw torque value difference of twisting screw;
Supply with multiple screw respectively from screw feed mechanism with the kind setting of each screw, and detect the taking-up of screw by sensor at the screw supply port of these screw feed mechanisms, when differentiating the kind of screw according to the screw detection signal that sends by this sensor, automatically select to set and the load current value or the magnitude of voltage that are used to carry out being twisted the corresponding above-mentioned electro-motor of stubborn screw torque value of screw by predefined the best
The driving that the stubborn screw of following the best of being undertaken by electro-motor to twist screw torque realization is then finished stops control.
The stubborn screw control method of technical scheme 2 described electric rotating tools of the present invention, it is characterized in that when detected screw has been finished stubborn screw with predetermined stubborn screw torque, twisting the demonstration that screw is finished when the screw supply port of the screw feed mechanism supplied with the kind of each screw takes out screw according at the screw detection signal that multiple screw is detected.
The stubborn screw control method of technical scheme 3 described electric rotating tools of the present invention, it is characterized in that, according at the screw detection signal that multiple screw is detected when the screw supply port of the screw feed mechanism supplied with the kind of each screw takes out respectively, preestablish kind and its number of the screw that needs in the assembling of required goods, with the kind of these screws of having set and its number accordingly, the number of having finished the screw of stubborn screw with each predetermined stubborn screw torque is counted, when the number of the screw that has been counted when kind with each screw has reached the number of setting, the finishing of the stubborn screw operation of being scheduled to show or the resetting of counter, and generation warning when arbitrary screw kind is removed with having surpassed the setting number before the finishing of predetermined stubborn screw operation.
The stubborn screw control device of technical scheme 4 described electric rotating tools of the present invention, it is characterized in that, constitute by following electric rotating tool, this electric rotating tool comprises: rotation drives the electro-motor of throw, detect the load current testing agency of the load current of this electro-motor, drive the driving switch of the Drive and Control Circuit of the above-mentioned electro-motor of control, and the rotation of the operation by above-mentioned driving switch drives above-mentioned electro-motor, and the controlling organization that constitutes as follows, when having surpassed predefined setting value by the detected load current of above-mentioned load current testing agency, carry out stopping control along with the driving that the stubborn screw of above-mentioned electro-motor is finished;
Be provided with screw feed mechanism, and the screw supply port that is provided with at above-mentioned screw feed mechanism detects the taking-up of each screw and the sensor of generation screw detection signal the mode that be selected respectively by the multiple screw of stubborn screw operation and take out can be supplied with the kind of each screw;
The screw kind decision circuit of judging the kind of screw according to the screw detection signal that is produced by the sensor is set, and be provided with automatically and select to set and the load current value of the corresponding electro-motor of stubborn screw torque value or the stubborn screw load current value initialization circuit of magnitude of voltage, this stubborn screw torque value is used for carrying out best stubborn screw accordingly with the kind of the screw of having been judged by this screw kind decision circuit;
And constitute in such a way, promptly in stubborn screw operation, to compare by the above-mentioned detected load current of load current testing agency with by the setting value that above-mentioned stubborn screw load current value initialization circuit has been set, the driving of carrying out electro-motor when above-mentioned detected load current has reached the above-mentioned setting value that has been set stops control.
The stubborn screw control device of technical scheme 5 described electric rotating tools of the present invention, it is characterized in that, setting is by taking out multiple screw from the screw feed mechanism according to the kind of each screw, input is by the detected screw detection signal of sensor, thus the screw kind decision circuit of the kind of differentiation screw; Be provided with according to the output signal that determines by above-mentioned screw kind decision circuit, automatically select to set and be used to carry out predefined the best and twist the load current value of the corresponding above-mentioned electro-motor of stubborn screw torque value of screw or the stubborn screw load current value initialization circuit of magnitude of voltage; Be provided with and compare by the detected load current of the load current detection circuit of electro-motor with by the setting value of setting in the above-mentioned stubborn screw load current value initialization circuit, thereby judge that the stubborn screw load current of finishing of twisting screw compares to determine circuit; And then be provided with the electro-motor that the driving of carrying out electro-motor when above-mentioned detected load current has reached the setting value of above-mentioned setting stops to control and stop control circuit.
The stubborn screw control device of technical scheme 6 described electric rotating tools of the present invention, it is characterized in that, be provided with stubborn screw and finish display unit, its basis by the detected screw detection signal of sensor, is twisted the demonstration that screw is finished by taking out multiple screw from the screw feed mechanism according to the kind of screw when detected screw has been finished stubborn screw with predetermined stubborn screw torque.
The stubborn screw control device of technical scheme 7 described electric rotating tools of the present invention, it is characterized in that, be provided with counter circuit, counter circuit with by taking out multiple screw according to the kind of each screw from the screw feed mechanism by the detected screw detection signal of sensor accordingly, preestablish the kind and the number of the screw that needs the assembling of required goods, and with respect to the kind of these screws of having set and its number, counting have been finished the screw of stubborn screw respectively with predetermined stubborn screw torque number;
In above-mentioned counter circuit, be provided with and reset/the alarm indication device, it is to have reached that finishing of the stubborn screw operation be scheduled to when setting number shows or the resetting of counter when the number according to the screw of the kind of each screw counting, and has surpassed the setting number and generation warning when taking out screw when arbitrary screw kind before the finishing of predetermined stubborn screw operation.
According to the of the present invention the 1st and the stubborn screw control method and the device of the described electric rotating tool of 4 technical schemes, can utilize 1 electronic tool that revolves, respectively with appropriate stubborn screw torque, automatically and with shirtsleeve operation, the operation error can not take place, realize the stubborn screw operation of selecting required screw so continually extremely expeditiously from multiple screw, thereby and can make low-cost manufacturing the simple in structure.
According to the of the present invention the 1st and the stubborn screw control method and the device of the described electric rotating tool of 5 technical schemes, the selection that makes multiple screw or take out easy and simple to handle in, the setting of the stubborn screw torque value of the stubborn screw of the best of the screw that can not need switching manipulation etc. and automatically be used to take out, thus and can eliminate the operation error of twisting the screw operation and improve operating efficiency significantly.
According to the of the present invention the 2nd and the stubborn screw control method and the device of the described electric rotating tool of 6 technical schemes, select and take out multiple screw respectively by showing by display unit, finished the situation of stubborn screw then with the stubborn screw torque that is used to carry out best stubborn screw, can make the affirmation facilitation of twisting the screw operation, and it is very big to help to twist the effect of suitableization of screw operation and rapidization.
According to the of the present invention the 3rd and the stubborn screw control method and the device of the described electric rotating tool of 7 technical schemes, when the assembling of required goods, handle by the counting that carries out these according to kind and its number of the screw that has preestablished, thus in suitableization of twisting the screw operation and rapidization, eliminate to twist the operation error of screw operation, and it is very big to help to assemble the effect of the production management of goods and qualitative control.
Description of drawings
Fig. 1 is the system specialization figure that the electronic concise and to the point system of revolving the control device of tool of the stubborn screw control method of expression enforcement electric rotating tool of the present invention constitutes.
Fig. 2 is the system specialization figure of configuration example of the control system of the expression electronic control device that revolves tool shown in Figure 1.
Fig. 3 is the flow chart of an embodiment of the stubborn screw control action program in the electronic control device that revolves tool of expression Figure 1 and Figure 2.
Fig. 4 is the flow chart that is illustrated in control action program additional in the stubborn screw control action program shown in Figure 3.
The specific embodiment
Below, to the stubborn screw control method of electric rotating tool of the present invention and the embodiment of device, following detailed description is carried out with reference to the accompanying drawing limit in the limit.
Fig. 1 is the system specialization figure that the electronic concise and to the point system of revolving the control device of tool of the stubborn screw control method of expression enforcement electric rotating tool of the present invention constitutes.That is, in Fig. 1, label 10 expressions are built-in with the electronic tool that revolves of electro-motor 12, this electronic revolving on the tool 10, are used to twist tool cutter head 14 is combined in electro-motor 12 via (figure do not show) such as suitable reducing gears the output shaft that revolves of screw operation.In addition, with respect to above-mentioned electro-motor 12, via suitable ON/OFF switch 18 connect disposing with required power supply 16 be connected, as the electrical motor driven control module 20 of the controlling organization of the driving control of carrying out electro-motor 12.
In addition, in an embodiment, as screw feeding device as described as follows, the screw feed mechanism 22A, 22B, the 22C that have screw supply port 23A, 23B, 23C respectively are set, and said screw feeding device is with can be with by the electronic feedway that mode that multiple screw SA, SB, SC that tool cutter head 14 carries out tightening operation select respectively to take out is supplied with according to each screw kind that revolves that revolves tool 10.And then, on each screw supply port 23A of above-mentioned screw feeding device 22A, 22B, 22C, 23B, 23C, be provided with sensor 24A, 24B, 24C as the screw testing agency of the screw detection signal that when taking out selected screw separately, produces the kind that is used to differentiate screw.
And be constituted as, by selecting to take out required screw from above-mentioned screw feed mechanism 22A, 22B, 22C, thereby will judge the kind of screw by the sensor 24A, 24B, the detected screw detection signal input of 24C screw kind decision circuit 25.By the output signal after above-mentioned screw kind decision circuit 25 differentiations, be transfused to above-mentioned electrical motor driven control module 20, in this electrical motor driven control module 20, automatically select to set load current value (also can adopt magnitude of voltage) with the corresponding electro-motor of stubborn screw torque value of the best screw-driving that is used to carry out in advance to set by each screw kind, simultaneously, carry out the driving that the stubborn screw along with electro-motor 12 finishes and stop control.
In addition, in the present embodiment, though do not illustrate especially, but can be on the part of for example electronic handle part housing that revolves tool 10, and on the position that the operator sees easily, suitably be provided with and twist screw end display unit, should twist screw and finish display unit, be as according to supplying with sensor 24A on the screw supply port of screw feed mechanism of multiple screw by being arranged on according to each kind of screw, 24B, the detected screw detection signal of 24C shows when detected screw has been finished screw-driving with predetermined stubborn screw torque and twists the mechanism that screw finishes.Like this, finished under the situation of tightening with predetermined stubborn screw torque by constituting at screw, detect this state and show, thereby before stubborn screw finishes, can keep selected to set with the load current value that is used to carry out the corresponding electro-motor of stubborn screw torque value that the best tightens in case its reset.Thus, for example, when in Halfway Stopping between operational period under the situation of electronic operation of revolving tool 10, can carry out carrying out the best and tighten the stubborn screw that the stubborn screw torque value of screw carries out by being used to of setting, finish up to tightening fully of screw.
In addition, in the present embodiment, on above-mentioned electrical motor driven control module 20, setting is set as follows, as carrying out resetting or producing the resetting/alarm display unit 30 of device of alarm of demonstration that operation finishes or counter, described mode is, according to passing through from above-mentioned screw feed mechanism 22A, 22B, 22C selects to take out required screw, and by the sensor 24A, 24B, the screw detection signal that 24C detects, preestablish needed screw kind and number thereof in the assembling of required goods, with the kind of these screws that set and number accordingly, the number of having finished the screw of screw-driving with predetermined stubborn screw torque is respectively counted, reach in number and to show finishing or carrying out resetting of counter of predetermined stubborn screw operation when setting number according to the screw of each screw kind counting, simultaneously, before the predetermined stubborn screw end of job, when being removed above predetermined number, arbitrary screw kind produces alarm.
Fig. 2 is the system diagram of the concrete configuration example of the expression electrical motor driven control module 20 that carries out electronic stubborn screw control of revolving tool shown in Figure 1.In addition, for convenience of explanation,, be marked with identically, and omit its detailed explanation with reference to label for the inscape identical with inscape shown in Figure 1.
In Fig. 2, be provided with and be used for driving the electronic electrical motor driven control circuit 26 that revolves the electro-motor 12 of tool 10 that control is built in present embodiment.Yet, as mentioned above, owing to select the required screw of taking-up and, be imported into screw kind decision circuit 25 by sensor 24A, 24B, the detected screw detection signal of 24C from the screw feed mechanism.Then, by the output signal after this screw kind decision circuit differentiation, be transfused to and twist screw load current value initialization circuit 28, automatically select to set and the load current value that is used to carry out twisting the corresponding electro-motor of stubborn screw torque value of screw, be input to and twist screw load current decision circuit 34 according to the predefined the best of each screw kind.
On the other hand, with respect to above-mentioned electrical motor driven control circuit 26, load current detection circuit 32 is set, this load current detection circuit 32, detection is twisting screw when operation by the electronic tool 10 that revolves, owing to being built in the load current that electronic driving of revolving the electro-motor 12 of tool 10 produces.By these load current detection circuit 32 detected load currents, be transfused to above-mentioned stubborn screw load current and compare to determine circuit 34 and compare with the corresponding load current value of setting by above-mentioned stubborn screw load current value initialization circuit 28 of stubborn screw torque value.And, compare to determine in the circuit 34 at above-mentioned stubborn screw load current, when the load current that produces in the driving owing to electro-motor 12 reaches the load current value of having set, via electro-motor halt instruction circuit 36, above-mentioned electrical motor driven control circuit 26 is used to the control that electro-motor 12 is stopped.As a result, carried out the screw that stubborn screw is operated, can twist the screw torque value by predefined the best and finish tightening of screw by the electronic tool 10 that revolves.
In addition, in above-mentioned electrical motor driven control circuit 26, when carrying out above-mentioned stubborn screw operation, owing to select to take out required screw and by sensor 24A, 24B, the detected screw detection signal of 24C, be transfused in the counter circuit 27 that preestablishes in the assembling of required goods needed screw kind and number thereof from screw feeding device.This counter circuit 27 is set as follows, that is, according to each kind of having finished the screw of screw-driving with predetermined separately stubborn screw torque, its number is counted.And, this counter circuit 27, be connected on above-mentioned resetting/alarm display unit 30, and be set to, when the number of the screw of counting according to every kind of screw has reached the setting number, the demonstration of the end of the stubborn screw operation of being scheduled to, or carry out resetting of counter, and arbitrary screw kind is removed to such an extent that surpass when setting number before predetermined stubborn screw operation is finished, and just produces alarm.
Next, in the control method and device of revolving tool the present embodiment that constitutes by said structure electronic, follow the control program under the situation of the stubborn screw control of twisting the screw operation, carry out following explanation with reference to Fig. 3 and flow chart shown in Figure 4.
Basic control program under the situation of the stubborn screw control of electronic stubborn screw operation of revolving tool 10 that Fig. 3 represents to follow present embodiment.In Fig. 3, at first,, select required screw SA, SB, SC from screw feed mechanism 22A, 22B, 22C by the electronic tool 10 that revolves along with the beginning of twisting the screw operation, take out (step 1) by suitable screw supply port 23A, 23B, 23C.When the taking-up of this screw, by sensor 24A, 24B on the screw supply port that is arranged on above-mentioned screw feeding device, 24C output screw detection signal (step 2).
, be imported in the screw kind decision circuit 25 by the screw detection signal of the sensor output by the taking-up of above-mentioned screw, judge the kind (step 3) of screw.Then, judged the output signal of above-mentioned screw kind decision circuit 25 of the kind of screw, be imported into and twist screw load current value initialization circuit 28, automatically select to set load current value (step 4) with the corresponding electro-motor of stubborn screw torque value of the stubborn screw that is used to carry out predefined the best according to the kind of each screw.
Then, by twisting the screw operation, be built in electronic load current (step 5) of revolving the electro-motor 12 of tool 10 by load current detection circuit 32 detections that are provided with respect to electrical motor driven control circuit 26 by the electronic tool 10 that revolves.The load current of the electro-motor 12 that detects by this load current detection circuit 32, with the load current value of setting by above-mentioned stubborn screw load current value initialization circuit 28, utilize to twist the screw load current and compare to determine circuit 34 and compare, carry out above-mentioned detection load current whether with to set load current value consistent or surpass its judgement (step 6).Then, when above-mentioned detection load current with to set load current value consistent or when surpassing it, via electro-motor halt instruction circuit 36, stop control by 26 pairs of electro-motors 12 of above-mentioned electrical motor driven control circuit, finish to twist screw (step 7).But, above-mentioned detection load current with set load current value consistent or surpass it before, keep by electronic and revolve the stubborn screw operation that tool 10 carries out and make its continuation.
By above control action, can be smoothly and suitably reach from the selection of the screw that comes from the screw feed mechanism and take out, the work till the end of the stubborn screw operation of carrying out with the stubborn screw torque of the best of having preestablished according to its each kind to the screw that will take out.
Secondly, the control program shown in Fig. 4 is described.When the taking-up of above-mentioned screw, to be input to the counter circuit 27 (step 11) that are provided with respect to above-mentioned electrical motor driven control circuit 26 by sensor 24A, the 24B of the screw supply port that is located at above-mentioned screw feeding device, the screw detection signal (step 2) of 24C output.At this moment, in aforementioned counter circuit 27, for example, preestablish the kind of the screw that needs in the assembling of required goods and its number, and be set to calculate respectively to be imported into and finished the number of every kind of screw of stubborn screw with each predetermined stubborn screw torque in the counter circuit 27.
So, in above-mentioned counter circuit 27, finished the number of every kind of screw of screw-driving, compare with the number of the screw of having set, whether judgement is above (step 12) when not surpassing, is calculated the number (step 14) of every kind of screw having finished stubborn screw then.But, when the number of the screw of surpass setting, send warnings (step 13), and need carry out the selection again of screw and taking-up (step 1) again by above-mentioned resetting/alarm indication device 30.At this moment, the signal that stubborn screw is through with can be obtained by above-mentioned steps 7.
Then, in aforementioned counter circuit 27, (step 14) when having counted the number of every kind of screw having finished stubborn screw, judge counting every kind of screw number whether with the consistent (step 15) of setting of number, when each number is consistent, when show twisting the finishing of screw operation, by above-mentioned resetting/alarm indication device 30 with counter reset (step 16).In addition, when each number is inconsistent, must further continue to twist the screw operation.
More than, preferred embodiment of the present invention is illustrated respectively, but the invention is not restricted to the foregoing description, for example when detection comes from the taking-up of screw of screw feeding device, for the misoperation that prevents to detect, can be heavy or 3 retransmit sensors by being provided with 2, set in the mode of the precision that improves control action.In addition, in the above-described embodiments, to detection according to the load current of electro-motor, as with the corresponding setting value of stubborn screw torque value that is used to carry out best stubborn screw, the situation of setting load current value is illustrated, but also can constitute with following mode, promptly as above-mentioned setting value, replace load current value and set, and carry out and by the comparison of the setting value that obtains based on the magnitude of voltage of load current as corresponding magnitude of voltage.In addition, in the scope that does not break away from spirit of the present invention, can carry out various design alterations.
Claims (7)
1. the stubborn screw control method of an electric rotating tool is characterized in that,
Use the electric rotating tool that constitutes as follows, that is: drive throw by the electro-motor rotation, detect the load current of this electro-motor by load current testing agency, and drive the Drive and Control Circuit of the above-mentioned electro-motor of control by driving switch, and carry out following driving and stop control: when having surpassed the setting value that has preestablished by the detected load current of above-mentioned load current testing agency, finish the stubborn screw of above-mentioned electro-motor;
According to the kind of a plurality of screws of being twisted the screw operation, preestablish the load current value or the magnitude of voltage of the electro-motor corresponding with being used to carry out best separately stubborn screw torque value difference of twisting screw;
Supply with multiple screw respectively from screw feed mechanism, and detect the taking-up of screw at the screw supply port of these screw feed mechanisms by sensor with the kind setting of each screw;
When differentiating the kind of screw, automatically select to set and the load current value or the magnitude of voltage that are used to carry out being twisted the corresponding above-mentioned electro-motor of stubborn screw torque value of screw by predefined the best according to the screw detection signal that sends by this sensor;
The driving that the stubborn screw of following the best of being undertaken by electro-motor to twist screw torque realization is then finished stops control.
2. the stubborn screw control method of electric rotating tool as claimed in claim 1 is characterized in that,
According at the screw detection signal that multiple screw is detected, when having finished stubborn screw with predetermined stubborn screw torque, detected screw twists the demonstration that screw is finished when the screw supply port of the screw feed mechanism supplied with the kind of each screw takes out screw.
3. the stubborn screw control method of electric rotating tool as claimed in claim 1 or 2 is characterized in that,
According at the screw detection signal that multiple screw is detected when the screw supply port of the screw feed mechanism supplied with the kind of each screw takes out respectively, preestablish kind and its number of the screw that needs in the assembling of required goods, with the kind of these screws of having set and its number accordingly, the number of having finished the screw of stubborn screw with each predetermined stubborn screw torque is counted, when the number of the screw that has been counted when kind with each screw has reached the number of setting, the finishing of the stubborn screw operation of being scheduled to show or the resetting of counter, and generation warning when arbitrary screw kind is removed with having surpassed the setting number before the finishing of predetermined stubborn screw operation.
4. the stubborn screw control device of an electric rotating tool is characterized in that,
Be made of following electric rotating tool, this electric rotating tool comprises: rotation drives the electro-motor of throw; Detect the load current testing agency of the load current of this electro-motor; Drive the driving switch of the Drive and Control Circuit of the above-mentioned electro-motor of control; And, by the above-mentioned electro-motor of operation rotation driving of above-mentioned driving switch, the controlling organization that also constitutes as follows, when having surpassed predefined setting value by the detected load current of above-mentioned load current testing agency, carry out stopping control along with the driving that the stubborn screw of above-mentioned electro-motor is finished;
Be provided with screw feed mechanism, and the screw supply port that is provided with at above-mentioned screw feed mechanism detects the taking-up of each screw and the sensor of generation screw detection signal the mode that be selected respectively by the multiple screw of stubborn screw operation and take out can be supplied with the kind of each screw;
The screw kind decision circuit of judging the kind of screw according to the screw detection signal that is produced by the sensor is set, and be provided with automatically and select to set and the load current value of the corresponding electro-motor of stubborn screw torque value or the stubborn screw load current value initialization circuit of magnitude of voltage, this stubborn screw torque value is used for carrying out best stubborn screw accordingly with the kind of the screw of having been judged by this screw kind decision circuit;
And constitute in such a way, promptly in stubborn screw operation, to compare by the above-mentioned detected load current of load current testing agency with by the setting value that above-mentioned stubborn screw load current value initialization circuit has been set, the driving of carrying out electro-motor when above-mentioned detected load current has reached the above-mentioned setting value that has been set stops control.
5. the stubborn screw control device of electric rotating tool as claimed in claim 4 is characterized in that,
Setting is by taking out multiple screw from the screw feed mechanism according to the kind of each screw, and input is by the detected screw detection signal of sensor, thus the screw kind decision circuit of the kind of differentiation screw; Be provided with according to the output signal that determines by above-mentioned screw kind decision circuit, automatically select to set and be used to carry out predefined the best and twist the load current value of the corresponding above-mentioned electro-motor of stubborn screw torque value of screw or the stubborn screw load current value initialization circuit of magnitude of voltage; Be provided with and compare by the detected load current of the load current detection circuit of electro-motor with by the setting value that above-mentioned stubborn screw load current value initialization circuit is set, thereby judge that the stubborn screw load current of finishing of twisting screw compares to determine circuit; And then be provided with the electro-motor that the driving of carrying out electro-motor when above-mentioned detected load current has reached the setting value of above-mentioned setting stops to control and stop control circuit.
6. as the stubborn screw control device of claim 4 or 5 described electric rotating tools, it is characterized in that,
Be provided with stubborn screw and finish display unit, should twist screw finish display unit according to by taking out multiple screw according to the kind of each screw from the screw feed mechanism by the detected screw detection signal of sensor, when detected screw has been finished stubborn screw with predetermined stubborn screw torque, twist the demonstration that screw is finished.
7. as the stubborn screw control device of claim 4 or 5 described electric rotating tools, it is characterized in that,
Be provided with counter circuit, this counter circuit with by taking out multiple screw according to the kind of each screw from the screw feed mechanism by the detected screw detection signal of sensor accordingly, preestablish kind and its number of the screw that needs the assembling of required goods, and with respect to the kind of these screws of having set and its number, counting have been finished the screw of stubborn screw respectively with predetermined stubborn screw torque number;
Be provided with and reset/the alarm indication device, this resets/the alarm indication device, when in above-mentioned counter circuit, having reached according to the number of the screw of the kind of each screw counting that finishing of the stubborn screw operation be scheduled to when setting number shows or the resetting of counter, and before the finishing of predetermined stubborn screw operation, surpassed the setting number and generation warning when taking out screw when arbitrary screw kind.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP250962/2004 | 2004-08-30 | ||
| JP2004250962A JP2006062065A (en) | 2004-08-30 | 2004-08-30 | Method and device for controlling screw-fastening in electric rotating tool |
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| Publication Number | Publication Date |
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| CN1743135A CN1743135A (en) | 2006-03-08 |
| CN1743135B true CN1743135B (en) | 2010-11-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN 200510091300 Active CN1743135B (en) | 2004-08-30 | 2005-08-26 | Screwing control method of electric rotating tool and apparatus thereof |
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| JP (1) | JP2006062065A (en) |
| CN (1) | CN1743135B (en) |
| HK (1) | HK1089409A1 (en) |
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|---|---|---|---|---|
| US11855567B2 (en) | 2020-12-18 | 2023-12-26 | Black & Decker Inc. | Impact tools and control modes |
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| JP2012086284A (en) * | 2010-10-15 | 2012-05-10 | Toyota Motor Corp | Fastening tool |
| JP2013146846A (en) | 2012-01-23 | 2013-08-01 | Max Co Ltd | Rotary tool |
| CN104339299B (en) * | 2013-08-06 | 2019-04-19 | 苏州宝时得电动工具有限公司 | A kind of electric tool |
| CN105843160A (en) * | 2014-09-02 | 2016-08-10 | 苏州宝时得电动工具有限公司 | Electric tool control method and electric tool |
| KR101591837B1 (en) | 2014-10-02 | 2016-02-04 | (주) 투에이치 | rotatable jig system for assembling vehicle navigation device |
| JP6558737B2 (en) * | 2016-01-29 | 2019-08-14 | パナソニックＩｐマネジメント株式会社 | Impact rotary tool |
| BR112018067672A2 (en) * | 2016-03-02 | 2019-04-09 | Hytorc Division Unex Corp | apparatus for tightening threaded fasteners |
| CN106707950B (en) * | 2016-12-12 | 2019-05-31 | 广东美的暖通设备有限公司 | The control system and control method counted for electric appliance production line screw |
| CN106737355B (en) * | 2016-12-19 | 2021-11-30 | 北京小米移动软件有限公司 | Screw protection method and device |
| WO2019124008A1 (en) * | 2017-12-18 | 2019-06-27 | 日東工器株式会社 | Tool, and control circuit and control method for tool |
| CN114083252A (en) * | 2021-11-23 | 2022-02-25 | 歌尔光学科技有限公司 | Universal screw machine |
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| HK1089409A1 (en) | 2006-12-01 |
| JP2006062065A (en) | 2006-03-09 |
| CN1743135A (en) | 2006-03-08 |
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