DE19949503A1 - Method of at least partly modular assembly of specific design element, especially for motor vehicles crankshaft, has each specific basic module component assigned an established coordinate point and an independent local coordinate system - Google Patents

Abstract

The modular assembly of motor vehicle parts, such as the engine crankshaft and gear units, has undergone considerable design developments in order to reduce design costs and to reduce the actual design engineering load. Particularly in the motor vehicle industry involving specific constructional components, CAD-design and data processing methods have been significant, but more and more outlay and intensity of CAD-work and the greater memory capacity requirement by the data processing systems has led to increasing construction and design costs. To overcome the problems of increasing costs, according to the proposed method each specific basic module component (2) is assigned an established coordinate fix point (KF) and an independent local coordinate system (LK). The data processing installation has a specific sequential program for calling for (polling) the discrete stored basic-module components, with a first basic-module component called up in the first s tep and a second basic module component called up in a second step.

Description

The invention relates to a method for performing an at least partial module-like composition of a specific construction component with the help a data processing system, in particular a motor vehicle component, such as one Crankshaft, a camshaft, a chain or gear drive and / or one Gear arrangement of a transmission or the like., With the structural component in several individual specific basic module components can be dismantled and each individual basic Module component in the storage unit of the data processing system at least once filed or retrievable, the data processing system at least one data Input unit, for the calculation and / or linking of additional data at least a microprocessor unit and for the output of calculated data or the visual Representation of the construction component at least one visual output unit, in particular a screen or a printer, and wherein the basic Module components in a defined by the data processing system global coordination system can be positioned accordingly.

Currently, specifics are becoming particularly common in the automotive industry Construction components with the help of CAD programs that are based on corresponding Data processing systems are running, created in the design departments. Here it is mostly high-quality data processing systems with appropriate Data input units for entering the design data, with accordingly high-quality microprocessor units so that new data can be calculated takes little time, and with visual output units, vzw. Color screens and also color printers on which the specific Construction components that have been constructed using the CAD program, too can be displayed accordingly. Today's CAD programs make it easier for the designer the necessary design work. On the one hand can  Construction components are not only shown in a simple manner or correspondingly simply differently dimensioned or modified, which was years ago still had to be done with great effort on the drawing board, but with today's Data processing systems as well as the existing CAD programs is also the Composition of a specific construction component that consists of modular Basic components is built up by multiple "mouse click" and the corresponding "Menu control" possible.

So one has gone over to specific construction components such as Crankshafts, camshafts or chain or gear drives, as well Gear arrangements of a transmission in its individual "basic parts", i.e. in to disassemble so-called basic module components, with each individual basic module component in stored in the storage unit of the data processing system at least once and is available. Now becomes a specific construction component such as a specific dimensioned camshaft visually represented using the data processing system, the basic module components stored for a specific camshaft type, whereby for each camshaft type correspondingly specific basic module components in the Storage unit are stored sequentially by "mouse click" and the corresponding "Menu selection" retrieved. So the designer first calls that for you certain camshaft type corresponding conical end of this camshaft from, namely the basic module component stored here for the cone-shaped Camshaft end and then positions this in a specified global Coordinate system on the screen in front of him. This will be the designer displayed on the CAD screen visually accordingly, where then the cone-shaped End of the camshaft appears and the designer in one of his desired Position is positioned accordingly. After that in the corresponding sequential The designer then calls the first cam or the first cam-like sequence executed area, i.e. that correspondingly stored cam-like base Modular component from and must now - again by "mouse click" - such in that of the data processing system generated, specified coordinate system position that the second basic module component relative to the first basic module component, So the retrieved cam is positioned to the conical end of the camshaft or will that the kinematic conditions for the specific Camshaft type are also met. The method of operation just described is from The designer repeats accordingly a number of times until the entire specific  Camshaft is assembled, d. H. the corresponding basic module components are called up and sequentially in succession by the designer in that of the Data processing system always set global coordinate system like this have been positioned so that the desired specific camshaft type is created and whose type-dependent and constructive conditions are met. After all, it can then a specific construction component composed in this way, here the camshaft then by the output unit of the data processing system, in particular on a Printers are issued so that it can then be used for further technical construction is available visually.

The method known in the art from which the invention is based is not optimal. On the one hand, this is very labor-intensive for the CAD designer because he is not only the individual basic module components for a specific construction component in the correct sequential order, but the individual specific Basic module components also in the global available here Position the coordinate system correctly, so that the type-related and constructive conditions for the construction component to be created are met. This has the consequence that the CAD designer of such basic module components several times retrieve and also several times within the global coordinate system accordingly "move" or "twist" until such basic module components the desired links with the other basic module components are, so that the respective specific construction component is created. On the other hand, must the storage space in such a data processing system can be very large because for each specific construction component to be constructed depending on the type, i.e. the type and Dimensioning the corresponding respective specific basic module components in the Data processing system are stored or must be stored so that the CAD Designer in the composition of the specific construction component on the access the respective specific basic module component, d. H. retrieve it accordingly can. As a result, the result is not just the workload for the CAD designer increased and its attentiveness and ability to concentrate heavily stressed because he the different specific basic module components in the correct sequential Order and position, but the storage space of the Data processing system for storing the basic module components must be relatively large be what increases the cost of such a data processing system and the  Overview of the CAD designer regarding the saved units is not essential simplified.

The invention is therefore based on the object of the method mentioned at the outset to design and further develop that the design effort for the CAD Designer is simplified and the necessarily available Storage capacity of the data processing system and the associated costs are reduced.

The task outlined above is now solved by the fact that each specific basic Module component has a fixed coordinate fixed point that each base Module component in its coordinate fixed point an independent local Coordinate system has that the data processing system for creating the specific construction component from the respective specific basic Module components a specific sequence program for calling up the saved individual basic module components that in a first step then a first Basic module component accessed and within the global coordinate system a corresponding positioning of the coordinate fixed point and the positioning of the local coordinate system is stored that in a second step a second Basic module component is retrieved and the second basic module component in such a way global coordinate system is stored so that the relative distance of the coordinate Fixed point of the second basic module component to the coordinate fixed point of the first Basic module component within the global coordinate system, exactly that through the specific sequence program corresponds to the defined distance.

Due to the method according to the invention, each basic module component is now one fixed coordinate fixed point assigned, with this also fixed in this Coordinate fixed point of each basic module component has its own local coordinate system having. Furthermore, the data processing system points to the creation of the specific Construction component on a sequence program that vzw. sequentially, i.e. accordingly successively calls up or retrieves the individual basic module components. Here then in a first step a first basic module component is retrieved and within the global Coordinate system positioned accordingly. In a second step this will be second basic module component and so within the global coordinate system filed that the coordinate fixed point of the first basic module component one  certain distance from the coordinate fixed point of the second basic module component occupies. Only after the second basic module component has been positioned will that become second basic module component around a specific axis of its coordinate system rotated so that it is "rotatably" positioned relative to the first base module component. The disadvantages described above are caused by the method according to the invention eliminated since the CAD designer no longer works with a plurality of "Mouse clicks" must position the individual basic module components, as this is now takes place automatically with the help of the data processing system, since every basic Module component is assigned a fixed coordinate fixed point and this Coordinate fixed points of the individual basic module components according to one for the specific construction component stored specific sequence program can be automatically positioned within the defined global coordinate system or be positioned. This means the workload for the CAD designer not only significantly simplified, but also the necessarily available standing storage capacity of the data processing system is thereby considerable reduced since the "intermediate positions" created by the designer are no longer de individual basic module components must be saved. Modular structure Geometries require less storage space. Furthermore, there are sources of error in the proper determination of the coordinate fixed points of the individual base Module components significantly minimized, now with the help of the data processing system the corresponding coordinate fixed points relative to each other and completely precise within the global coordinate system, and thus the basic module components themselves, be positioned.

There are now a large number of possibilities for the method according to the invention in advantageous to design and develop. For this, first of all, on the Claim 1 subordinate claims are referred. Hereinafter is now a preferred embodiment of the invention with reference to a drawing and be described in more detail in the associated description. The drawing shows:

Fig. 1 shows a first specific basic modular component for a specific construction component, namely the wave catch for a crankshaft, in a schematic representation pespektivischen,

Fig. 2 shows a second basic module component, namely a crank arm for a crankshaft, in a schematic perspective representation,

Fig. 3 shows a third basic module component, namely the shaft end of a crankshaft in a schematic perspective representation,

Fig. 4 shows the sequential arrangement of the base module components for a crankshaft, in a schematic exploded view in accordance with the corresponding axes of the local coordinate systems,

Fig. 5, in principle, the crankshaft of Fig. 4 in the assembled state in accordance with the corresponding axes of the local coordinate systems of the individual basic module components in a perspective schematic representation,

Fig. 6, in principle in Fig. 5 with the crankshaft illustrated positioning of the individual basic module components, namely the rotational positioning connecting the crank webs, in a simplified schematic representation,

Fig. 7 shows the composition of a further specific construction component, namely a camshaft in a perspective schematic representation,

Fig. 8 shows a schematic simplified illustration of the schematic flow of the inventive method on a data processing system and

Fig. 9 is a schematic representation of an engine with a cam drive assembled with the inventive method.

Figs. 1 to 9 illustrate the method for performing a modular composition of a specific design component 1 with the aid of a data processing system, not shown here, in particular a motor vehicle component, such as a crankshaft 1 a, a camshaft 1 b, a chain or gear drive and / or Gear arrangement of a transmission or the like. The construction component 1 can be dismantled into a plurality of individual specific basic module components 2 , each individual basic module component 2 being stored and accessible at least once in the storage unit of the data processing system. The data processing system, not shown here, has at least one data input unit, in particular for the input of special data, at least one microprocessor unit for the calculation and / or linking of further data and at least one visual output unit, in particular a screen or a printer, for the output of calculated data or the pictorial representation of the construction component 1 . The basic module components 2 can be positioned in a fixed global coordinate system GK generated by the data processing system, as has been customary in the prior art for CAD programs.

The disadvantages described at the outset are now avoided in that each specific basic module component 2 has a fixed coordinate fixed point KF, that each basic module component 2 has an independent local coordinate system LK in its coordinate fixed point KF, that the data processing system for creating the specific construction component 1 from the respective basic module components 2 has a specific sequence program for calling up the stored individual basic module components 2 , that in a first step a first basic module component 2 a is then called up and within the global coordinate system GK by appropriate positioning of the coordinate Fixed point and the positioning of the local coordinate system LK is stored, that in a second step a second basic module component 2 b is retrieved and the second basic module component 2 b is stored in the global coordinate system GK, so that the relative distance d of the coordinate fixed point KF of the second basic module component 2 b to the coordinate fixed point KF of the first basic module component 2 a within the global coordinate system GK corresponds exactly to the distance defined by the specific sequence program.

So 1, FIGS. To 3 different base module components 2, namely a first basic module component 2 a in Fig. 1, namely, the beginning of the shaft of a crank shaft, a second base module component 2 b in Fig. 2, namely, a crank web of a crankshaft and a third basic module component 2 c in FIG. 3, namely the shaft end of a crankshaft. On the one hand, the various FIGS. 1 to 3 make it clear that the specific construction component 1 , here a crankshaft 1 a, can be dismantled into different basic module components 2 , each basic module component 2 having a coordinate fixed point KF and a coordinate fixed point KF in this has an independent local coordinate system LK.

The local coordinate systems LK provided here each have their own corresponding X, Y and Z axes.

Fig. 4 shows the composition of a specific construction component 1 , namely a crankshaft 1 a from the specific basic module components 2 , which are shown in Figs. 1 to 3 in an exploded view. The first basic module component 2 a can be clearly seen here as the start of the shaft, several second basic module components 2 b, namely the crank webs, and the third basic module component 2 c, namely the shaft end. In their coordinate fixed points KF, all basic module components 2 have the corresponding local coordinate system LK with the respective X, Y, Z axes. The illustration in FIG. 4 clarifies that the basic module components 2 are now arranged in such a way that the Z axes of the local coordinate systems LK correspond accordingly, ie lie on one line.

This can also be seen from FIG. 5, where the specific structural component 1 , namely the crankshaft 1 a, is shown in a perspective view. The form of representation selected here can already be output by the data processing system on a screen or a printer. The global coordinate system GK is shown schematically below left and also has an X, Y and Z axis. The illustration in Fig. 5 shows that the single coordinate KF fixed points are positioned entprechend the base module components 2 within the global coordinate system GK. Here, the Z axes of the local coordinate system LK of the individual basic module components 2 correspond. Starting from the illustration in FIG. 4, the individual basic module components 2 have been “only” moved translationally along their Z axes, so that the construction component 1 shown in FIG. 5 is shown. The distances between the individual coordinate fixed points KF correspond to the distance defined by the sequence program. This type of computer-aided representation of the specific construction component 1 allows the CAD designer to work relatively simply since, in the prior art, he had always called up the individual basic module components 2 and initially positioned them within the global coordinate system GK with a "mouse click" had to and had to translate to get to the illustration in Fig. 5, which here shows a crankshaft 1 a but not yet the final crankshaft 1 a, as it will be used later.

For this purpose, it is still necessary to position the second basic module components 2 by an angle determined by the sequence program, by a specific axis, here the Z axis of the local coordinate systems LK within the global coordinate system GK, namely by the corresponding rotation. Fig. 6 shows the rotational rotation of individual basic module components 2 , namely the second basic module components 2 b, that is, the crank webs, here - seen from the left - the second and third pair of crank webs around the Z axis of the local coordinate system LK.

Figs. 1 to 6 make it clear that here the base module components are accessed 2 sequentially and are initially positioned correspondingly in a global coordinate system GK by the Coordinate fixed point KF positioned namely of the individual basic module components 2 in the global coordinate system GK corresponding becomes. This then leads to the representation in FIG. 5. The individual basic module components 2 are then again rotated within the global coordinate system GK, in other words rotated in accordance with the sequence program, so that their positioning corresponds to the final positioning for the specific construction component 1 . Such a twist is shown in Fig. 6.

While FIGS. 1 to 6 relate to a crankshaft 1 a, the composition 7, FIG. 1 of another specific construction part, namely a cam shaft 1 b. The manner of the composition of this specific structural component 1 , namely the camshaft 1 b, basically runs exactly the same as for the crankshaft 1 a shown in FIGS. 1 to 6 and will therefore not be explained in detail here.

The Fig. 8 now shows the schematic program flow within the data processing system for the illustrated in Fig. 1 to 7 methods.

The composition of the specific construction component 1 is realized with the aid of a data processing system, in particular a modified CAD program.

Starting from a CAD program known in the prior art, the CAD protocol program, which is stored separately in the usual manual composition of a specific construction component 1 , is broken down and generalized by appropriate variables. By entering the appropriate project and calculation data in the "master file", this creates the "tab file" for a specific construction component. The specific construction component 1 is ultimately read as a "session file in a modified CAD program. The" master file "basically describes the composition of the construction component 1 in a general form, namely the geometric locations / links of the basic components required for the composition. Module components 2. Including the calculation data read into the "master file", the "master file" accesses the respective stored specific basic module components 2 .

As can be seen in FIG. 8, the "session file" takes the data required for the specific construction component 1 and its dimensions from a separate "TAB file". In other words, the variables of the corresponding "session file" are assigned specific data from the "TAB file". Here, the data of the "TAB file" are determined or calculated with the aid of the data processing system and with the aid of the "master file" stored for the construction component 1 , including the specific calculation data read in here, and by means of a correspondingly separate program T3D. In other words, a "session file" is created for each specific construction component 1 , the specific data for occupying the general variables of the session file for the respective construction component 1 being stored in a corresponding TAB file and with the aid of a further specific program Z3D be imported. The session file now specified by the TAB file can be read into a CAD system.

Depending on the respective master file, specific TAB files or a specific session file are created which can be read into the CAD system, so that the specific construction component 1 is then assembled accordingly in accordance with the method described in FIGS. 1 to 7 can and finally is output by the output unit either on a screen or on a printer, as is at least partially shown in FIGS. 1 to 6 for the crankshaft 1 a and in FIG. 7 for the camshaft 1 b, wherein in FIG. 7 the basic module components 2 are designed as cams 2 d and intermediate pieces 2 e.

The method described here can also be specific to others Construction components are used, such as the gear arrangement of a  Gearbox or other components or kinematic relationships such as Creating the connecting rod violin of a connecting rod.

As a result, the construction work for a CAD designer is considerably simplified with the aid of the method according to the invention, since specific construction components 1 can be assembled automatically with the aid of this method, which can finally be seen again in FIG shows.

REFERENCE SIGN LIST

1

Construction component

1

a crankshaft

1

b camshaft

2nd

Basic module component

2nd

a First basic module component

2nd

b Second basic module component

2nd

c Third basic module component

2nd

d cams

2nd

e spacers
X, Y, Z axes
GK global coordinate system
KF coordinate fixed point
LK local coordinate system

Claims (18)

1. Method for carrying out an at least partially modular composition of a specific structural component ( 1 ) with the aid of a data processing system, in particular a motor vehicle component such as a crankshaft ( 1 a), a camshaft ( 1 b), a chain or gear drive and / or a gear arrangement Gearbox or the like, wherein the construction component ( 1 ) can be dismantled into several individual specific basic module components ( 2 ) and each individual basic module component ( 2 ) can be stored or called up at least once in the memory unit of the data processing system, the data processing system having at least one data -Input unit, for the calculation and / or linking of further data at least one microprocessor unit and for the output of calculated data or the visual representation of the construction component ( 1 ) at least one visual output unit, in particular a screen or a printer, and wobe i the basic module components ( 2 ) can be positioned accordingly in a fixed global coordinate system (GK) generated by the data processing system, characterized in that each specific basic module component ( 2 ) has a fixed coordinate fixed point (KF) that each base -Module component ( 2 ) in its coordinate fixed point (KF) has an independent local coordinate system (LK) that the data processing system for creating the specific construction component ( 1 ) from the respective specific basic module components ( 2 ) has a specific sequence program for the call of stored individual basic module components ( 2 ), that in a first step then a first basic module component ( 2 a) is retrieved and within the global coordinate system (GK) by appropriate positioning of the coordinate fixed point (KF) and the positioning of the local Coordinate system (LK) is stored that in a second step e is called up in the second basic module component ( 2 b) and the second basic module component ( 2 b) is stored in the global coordinate system (GK) such that the relative distance of the coordinate fixed point (KF) of the second basic module component ( 2 b) to the coordinate fixed point (KF) of the first basic module component ( 2 a) within the global coordinate system (GK) corresponds exactly to the distance defined by the specific sequence program. 2. The method according to claim 1, characterized in that the first and the second basic module component ( 2 a, 2 b) are positioned so that two axes of the local coordinate systems (LK) of the two basic module components ( 2 a, 2 b ) correspond. 3. The method according to any one of the preceding claims, characterized in that the second basic module component ( 2 b) is rotated by an angle determined by the sequence program about a specific axis of the local coordinate system (LK) within the global coordinate system (GK). 4. The method according to any one of the preceding claims, characterized in that a plurality of specific basic module components ( 2 ) are sequentially called up and assembled to form the specific construction component ( 1 ). 5. The method according to any one of the preceding claims, characterized in that each specific construction component ( 1 ) is or is stored as part of a generalized CAD protocol program, namely as a session file. 6. The method according to any one of the preceding claims, characterized in that each basic module component ( 2 ) is or is stored as part of a generalized CAD protocol program, namely as a session file. 7. The method according to any one of the preceding claims, characterized in that the session file takes the data required for the specific construction component ( 1 ) and its dimensioning from a tab file. 8. The method according to any one of the preceding claims, characterized in that the data of the tab file are determined or calculated by at least one master file stored for the specific construction component ( 1 ) and the master file the characteristic data of at least one basic module component ( 2 a, 2 b) have or calculated. 9. The method according to any one of the preceding claims, characterized in that the session file created by the tab file is read into the CAD system. 10. The method according to any one of the preceding claims, characterized in that the composite specific construction component ( 1 ) is output by the output unit. 11. The method according to any one of the preceding claims, characterized in that the specific structural component ( 1 ) is a crankshaft ( 1 a) and the respective basic module components ( 2 ) are, among other things, crank arms. 12. The method according to any one of the preceding claims, characterized in that the specific structural component ( 1 ) is a camshaft ( 1 b) and the respective basic module components ( 2 ) are cams ( 2 d) and intermediate pieces ( 2 e). 13. The method according to any one of the preceding claims, characterized in that the specific structural component ( 1 ) is the gear arrangement of a transmission and the respective basic module components ( 2 ) are different gears or pairs of gears. 14. The method according to any one of the preceding claims, characterized in that the specific structural component ( 1 ) is a connecting rod and / or the connecting rod violin defined by the connecting rod. 15. The method according to any one of the preceding claims, characterized in that the crankshaft ( 1 a) or camshaft ( 1 b) or gear arrangement composed of the basic module components ( 2 ) is output by the output unit. 16. The method according to any one of the preceding claims, characterized in that the base module components ( 2 ) are also pistons, valves, springs, screws, piston pins or piston rings. 17. The method according to any one of the preceding claims, characterized in that with the help of a specific program (Z3D) from the master file and the TAB A session file is generated. 18. The method according to any one of the preceding claims, characterized in that the creation of the master files based on the analysis of a generalized CAD Protocol program takes place.