For the characteristics of the gear parts, the API function provided by the CAXA electronic board secondary development platform EBADS is used to prepare the parameter drawing subroutine with VC 5.0, so as to realize the automatic generation of the process diagram. The following is an example of some of the procedures for the double-toothed gear part rolling process. Process diagram dimensioning Process dimensioning is a more complicated process. There are many factors to consider. The implementation principle is as follows: 1) All dimension forms can also be decomposed into features (pixel elements) to process, and the dimension feature drawing subroutine is compiled. Input feature drawing sub-library; 2) Dimension type (including roughness, geometrical tolerance, etc.) of all process drawings that need to be marked, and dimensioning subroutine; 3) Dimension is a dynamic process, size parameter With the input of the drawing parameters of the process diagram, it is determined and marked. When the process diagram parameters change, the dimension parameters will change accordingly. 4) At the same time as the process diagram subroutine is programmed, the dimensioning subroutine is transferred to realize the operation diagram. Drawing and automatic dimensioning of process dimensions.
Using the entity drawing function and its interface provided by CAXA electronic drawing board 2000, a powerful and practical parameterized process sketch generation system is designed. This system uses the "immediate menu" form unique to CAXA2000, and uses the "immediate menu". "Interactive operation, the user can easily input the size parameter, the insertion point coordinate or click the work area with the mouse to obtain the position of the graphic insertion point, so as to better meet the requirements of parameterized drawing. In the CAPP system of gear parts, the automatic drawing of the process diagram brings great convenience to the craftsman. The automatic generation system of this process diagram has a good test effect.
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