CN105068508A - Detection device and detection method for precise polishing machined workpiece of numerically-controlled machine tool - Google Patents
Detection device and detection method for precise polishing machined workpiece of numerically-controlled machine tool Download PDFInfo
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- CN105068508A CN105068508A CN201510481185.7A CN201510481185A CN105068508A CN 105068508 A CN105068508 A CN 105068508A CN 201510481185 A CN201510481185 A CN 201510481185A CN 105068508 A CN105068508 A CN 105068508A
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- circuit
- numerically
- controlled machine
- signal
- sniffer
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/18—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form
- G05B19/401—Numerical control [NC], i.e. automatically operating machines, in particular machine tools, e.g. in a manufacturing environment, so as to execute positioning, movement or co-ordinated operations by means of programme data in numerical form characterised by control arrangements for measuring, e.g. calibration and initialisation, measuring workpiece for machining purposes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23Q—DETAILS, COMPONENTS, OR ACCESSORIES FOR MACHINE TOOLS, e.g. ARRANGEMENTS FOR COPYING OR CONTROLLING; MACHINE TOOLS IN GENERAL CHARACTERISED BY THE CONSTRUCTION OF PARTICULAR DETAILS OR COMPONENTS; COMBINATIONS OR ASSOCIATIONS OF METAL-WORKING MACHINES, NOT DIRECTED TO A PARTICULAR RESULT
- B23Q17/00—Arrangements for observing, indicating or measuring on machine tools
- B23Q17/20—Arrangements for observing, indicating or measuring on machine tools for indicating or measuring workpiece characteristics, e.g. contour, dimension, hardness
-
- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/37—Measurements
Abstract
The invention provides a detection device and a detection method for a precise polishing machined workpiece of a numerically-controlled machine tool. The detection device comprises a detection control loop which is connected with a tool of the numerically-controlled machine tool through a lead wire, wherein the detection control loop comprises a noise reduction circuit, an input end of the noise reduction circuit is connected with the tool, an output end of the noise reduction circuit is connected with a signal amplifying circuit, the signal amplifying circuit is connected with a signal conversion circuit, the signal conversion circuit is connected with a comparison circuit, a signal criterion is connected with the comparison circuit, an output of the comparison circuit is connected with a driving circuit, the driving circuit is connected with an output circuit of the detection control loop, and the output circuit is connected with a servo control system used for controlling the tool of the numerically-controlled machine tool through a lead wire. The detection device and the detection method can increase the qualified rate of products subjected to workpiece surface oxidation treatment to 99.8%, is economical and reliable, has wide application range, and has great application value.
Description
Technical field
The invention belongs to numerically-controlled machine manufacturing technology field, be specifically related to a kind of sniffer and the detection method of precisely seeing light processing work for numerically-controlled machine.
Background technology
To workpiece, numerically-controlled machine is shown in that light adds man-hour, need the oxide on surface machining away workpiece, and numerically-controlled machine belongs to the processing of batch-automated unmanned, owing to there is error in workpiece robotization clamping process, process by pre-set stationary coordinate position dimension, very easily cause workpiece machining surface uneven, cause undressed, to cross the ratio that processing work and processing puts in place between workpiece suitable, the average qualification rate of workpiece only has 33%.If all selected dimensioned, though oxide layer can realize all seeing that light is processed, the overall dimensions of workpiece can be affected, and especially for magnetic material, the performance of product can be made to have a greatly reduced quality.Existing solution is equipped with tool setting gauge exactly, work surface location is determined with tool setting gauge, realize processing, and use tool setting gauge, bring again new problem, if surface of the work is uneven, tool setting gauge can only perception peak or certain a bit, again error is brought to processing dimension, get back to again the passing rate of processing of 33%, and use tool setting gauge from determining that position is to processing, lathe needs to change tool setting gauge and process tool position, extend process time, for seeing that light processing work is again fatal, in addition tool setting gauge is with high costs, not yet universal at present, therefore extremely to be supplied a kind of economical reliable, and realize surface of the work oxide accurately and see the sniffer that light is processed, so that the qualification rate of improving product.
Summary of the invention
The technical matters that the present invention solves: a kind of sniffer and the detection method of precisely seeing light processing work for numerically-controlled machine are provided, by installing the detection control loop of surface of the work oxide layer additional at cutter, utilize metal conductive oxide to realize the conducting of control loop and shutoff compared with the principle of simple metal poorly conductive, solve the technical matters that when numerically-controlled machine under prior art is shown in light processing work oxide on surface, product percent of pass is low.
The technical solution used in the present invention: the sniffer precisely seeing light processing work for numerically-controlled machine, be there is the detection control loop be connected by wire with the cutter of numerically-controlled machine, described detection control loop has Dolby circuit, the input end of described Dolby circuit is connected by wire with cutter, the output terminal of Dolby circuit is connected with the input end of signal amplification circuit, the output terminal of signal amplification circuit is connected with the input end of signaling conversion circuit, the output terminal of signaling conversion circuit connects the input end of comparator circuit, signal criterion is also connected with the input end of comparator circuit, the output terminal of comparator circuit connects the input end of driving circuit, the output terminal of driving circuit connects the output circuit of detection control loop, described output circuit is connected by the servo-control system of wire with the cutter of domination number controlled machine.
When described comparator circuit exports high level, driving circuit exports Continuity signal; During described comparator circuit output low level, driving circuit exports cut-off signals.
When described output circuit has signal to export, the servo-control system of the cutter of numerically-controlled machine stops the processing to workpiece; When output circuit no signal exports, the servo-control system of the cutter of numerically-controlled machine continues the processing to workpiece.
A kind of detection method of above-mentioned sniffer is also provided, the P mouth of described sniffer connects tool rest by wire, cutter is fixed on tool rest, the N mouth of sniffer passes through the digital control system of wire connecting machine tool selective headstock, machine chuck connects selective headstock, described machine chuck holding workpiece, what realize workpiece by sniffer sees that light is processed.
The present invention's advantage compared with prior art: by setting up detection control loop at the cutter of numerically-controlled machine, cutter can be realized unmanned robotization during surface of the work oxidation processes is precisely shown in that light is processed, the qualification rate of product can reach 99.8%, and the realization economy of this control loop is reliable, applied widely, there is larger using value.
Accompanying drawing explanation
Fig. 1 is structural principle block diagram of the present invention;
Fig. 2 is machining sketch chart of the present invention.
Embodiment
Below in conjunction with accompanying drawing 1,2, a kind of embodiment of the present invention is described.
The sniffer of light processing work is precisely seen for numerically-controlled machine, be there is the detection control loop be connected by wire with the cutter 2 of numerically-controlled machine, described detection control loop comprises the Dolby circuit 3 electric signal being carried out noise reduction process, electric signal after noise reduction is carried out the undistorted signal amplification circuit 4 amplifying process of signal, electric signal is carried out the signaling conversion circuit 5 changed, the signal criterion 6 contrasted is formed with the signal after conversion, by the comparator circuit 7 that the signal after conversion and reference signal are compared, output signal after comparison is realized the driving circuit 8 of conducting or shutoff through driving circuit 8 pairs of control loops, and the output circuit 9 to be connected with driving circuit 8.
Particularly, the input end of described Dolby circuit 3 is connected by wire with cutter 2, to obtain current signal, the output terminal of Dolby circuit 3 is connected with the input end of signal amplification circuit 4, the output terminal of signal amplification circuit 4 is connected with the input end of signaling conversion circuit 5 signal after amplifying to be grabbed and changes, the output terminal of signaling conversion circuit 5 connects the input end of comparator circuit 7, signal criterion 6 is also connected with the input end of comparator circuit 7, compare in comparator circuit 7, the output terminal of comparator circuit 7 connects the input end of driving circuit 8, the output terminal of driving circuit 8 connects the output circuit 9 of detection control loop, described output circuit 9 is connected by the servo-control system of wire with the cutter 2 of domination number controlled machine.
When comparator circuit 7 exports high level, driving circuit 8 exports Continuity signal; During described comparator circuit 7 output low level, driving circuit 8 exports cut-off signals.When output circuit 9 has signal to export, the servo-control system of the cutter 2 of numerically-controlled machine stops the processing to workpiece 1; When output circuit 9 no signal exports, the servo-control system of the cutter 2 of numerically-controlled machine continues the processing to workpiece 1.
Principle of work of the present invention is, as shown in Figure 1, lathe work in-process, cutter 2 pairs of workpiece 1 surfaces process, the A district of workpiece 1 is metal oxide district, B district is metal body district, because metal oxide is compared with the poorly conductive of metal body, therefore, when cutter 2 contacts the A district of workpiece 1, comparatively B district has a small amount of electric current to input Dolby circuit by wire, through carrying out noise reduction process successively to electric signal, amplify process, comparator circuit 7 is inputted after conversion process, with the setting value comparison of signal criterion 6 in comparator circuit 7, the signal input value of comparator circuit 7 is lower than the baseline signal value of signal criterion 6, comparator circuit 7 output low level, low level makes driving circuit 8 export cut-off signals, output circuit 9 no signal exports, therefore the servo-control system of the cutter 2 of numerically-controlled machine continues to process workpiece 1 surface.On the contrary, after cutter 2 is worked into the metal body B district to a certain degree entering workpiece 1, comparatively A district has a large amount of electric current to input Dolby circuit 3, in like manner, successively noise reduction process is carried out to electric signal, amplify process, comparator circuit 7 is inputted after conversion process, the signal of input comparator circuit 7 is far above signal criterion 6, comparator circuit 7 exports high level, high level makes driving circuit 8 export Continuity signal, output circuit 9 has signal to export, therefore the servo-control system of the cutter 2 of numerically-controlled machine stops feed, prove that the oxide on surface of workpiece 1 is processed complete, guarantee that the oxide layer on workpiece 1 surface just broken through by cutter 2, precisely complete unattended robotization and see that light is processed.
As shown in Figure 2, during machine tooling, tool rest 11 along machine Z-axis direction near workpiece 1, after cutter 2 touches workpiece 1, the surface oxide layer of cutter 2 turner 1, sniffer 10 no signal, tool rest 11 continues near workpiece 1, after the surface oxide layer of workpiece 1 broken through completely by cutter 2, by detection control loop, sniffer 10 judges that the oxide layer of workpiece 1 breaks through, output signal to the digital control system of selective headstock (13), and tool rest 11 to move stopping along machine Z-axis, tool rest 11 is let pass along lathe X-axis and is advanced, and whole car falls the surface oxide layer of workpiece 1.
Compared with prior art, the invention solves the robotization of surface of the work oxidation processes unmanned processing in precisely see that light is processed, surface of the work oxide layer contact detection control loop is broken through by adding cutter in numerically controlled lathe, Product processing qualification rate is brought up to 99.8%, this sniffer extends in the detection processing of other machining apparatus, has larger using value.
Above-described embodiment, just preferred embodiment of the present invention, is not used for limiting the scope of the present invention, therefore all equivalence changes done with content described in the claims in the present invention, all should be included within the claims in the present invention scope.
Claims (4)
1. the sniffer of light processing work is precisely seen for numerically-controlled machine, it is characterized in that: described sniffer (10) has the detection control loop be connected by wire with the cutter of numerically-controlled machine (2), described detection control loop has Dolby circuit (3), the input end of described Dolby circuit (3) is connected by wire with cutter (2), the output terminal of Dolby circuit (3) is connected with the input end of signal amplification circuit (4), the output terminal of signal amplification circuit (4) is connected with the input end of signaling conversion circuit (5), the output terminal of signaling conversion circuit (5) connects the input end of comparator circuit (7), signal criterion (6) is also connected with the input end of comparator circuit (7), the output terminal of comparator circuit (7) connects the input end of driving circuit (8), the output terminal of driving circuit (8) connects the output circuit (9) of detection control loop, described output circuit (9) is connected by the servo-control system of wire with the cutter (2) of domination number controlled machine.
2. the sniffer precisely seeing light processing work for numerically-controlled machine according to claim 1, is characterized in that: when described comparator circuit (7) exports high level, and driving circuit (8) exports Continuity signal; During described comparator circuit (7) output low level, driving circuit (8) exports cut-off signals.
3. the sniffer precisely seeing light processing work for numerically-controlled machine according to claim 1, it is characterized in that: when described output circuit (9) has signal to export, the servo-control system of the cutter (2) of numerically-controlled machine stops the processing to workpiece (1); When output circuit (9) no signal exports, the servo-control system of the cutter (2) of numerically-controlled machine continues the processing to workpiece (1).
4. the detection method of the sniffer as described in claim 1 or 2 or 3, it is characterized in that: the P mouth of described sniffer (10) connects tool rest (11) by wire, cutter (2) is fixed on tool rest (11), the N mouth of sniffer (10) passes through the digital control system of wire connecting machine tool selective headstock (13), machine chuck (12) connects selective headstock (13), described machine chuck (12) holding workpiece (1), what realize workpiece (1) by sniffer (10) sees that light is processed.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510481185.7A CN105068508B (en) | 2015-08-03 | 2015-08-03 | The detection device and detection method of light workpieces processing are precisely seen for Digit Control Machine Tool |
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| CN201510481185.7A CN105068508B (en) | 2015-08-03 | 2015-08-03 | The detection device and detection method of light workpieces processing are precisely seen for Digit Control Machine Tool |
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| CN105068508A true CN105068508A (en) | 2015-11-18 |
| CN105068508B CN105068508B (en) | 2017-12-22 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109407620A (en) * | 2018-11-21 | 2019-03-01 | 陕西海力特精密机械有限公司 | Automatic numerical control machine tool external interface debugging instrument |
| CN112548310A (en) * | 2020-11-30 | 2021-03-26 | 沈阳机床股份有限公司 | Workpiece detection method for automatic feeding machine tool |
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| CN109407620A (en) * | 2018-11-21 | 2019-03-01 | 陕西海力特精密机械有限公司 | Automatic numerical control machine tool external interface debugging instrument |
| CN112548310A (en) * | 2020-11-30 | 2021-03-26 | 沈阳机床股份有限公司 | Workpiece detection method for automatic feeding machine tool |
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| CN105068508B (en) | 2017-12-22 |
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Inventor after: Li Hongjun Inventor after: Wu Xiaogang Inventor after: Li Huisheng Inventor after: Yang Xiaodong Inventor after: Zhou Wenbin Inventor after: Tian Jiandong Inventor after: Yuan Jianfeng Inventor after: Xiao Yawei Inventor before: Wu Xiaogang Inventor before: Li Huisheng |
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Denomination of invention: Detection device and detection method for precise polishing machined workpiece of numerically-controlled machine tool Effective date of registration: 20190514 Granted publication date: 20171222 Pledgee: Baoji City Jintai District Rural Credit Cooperatives Chencang credit cooperatives Pledgor: SHAANXI HALET PRECISION MACHINERY Co.,Ltd. Registration number: 2019610000092 |