Automatic generation method for three-dimensional process model of shaft machining part
A process model and processing method technology, which is applied in the field of automatic generation of three-dimensional process models of shaft machined parts, can solve the problems of complex segmentation and combination algorithms, cumbersome operation steps, and low accuracy, and achieves rapid selection and simplified operation process. , the effect of improving efficiency
Active Publication Date: 2020-12-04
XIDIAN UNIV
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[0005] The purpose of the present invention is to provide a method for automatically generating a three-dimensional process model of a shaft machining part. Through operations such as segmentation of the three-dimensional model of the part and Boolean operations, the cutting body is directly decomposed into a process cutting body, and then the shaft is quickly and accurately generated. Three-dimensional process model of parts to overcome the problems of complex segmentation and combination algorithms, cumbersome operation steps, low efficiency and low accuracy in the prior art
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[0040] Such as figure 1 As shown, a method for automatically generating a three-dimensional process model of a shaft machined part is characterized by:
[0041] 1) Input the 3D design feature model of the shaft part and the blank model corresponding to the part model;
[0042]2) By preprocessing the three-dimensional design feature model of the part, the sequence of candidate segmentation surfaces and the processing method chain of each main processing surface are obtained;
[0043] 3) Carry out Boolean subtraction operation between the part design feature model and the blank model to obtain the cutting body;
[0044] 4) Execute the mapping and segmentation operation on the cutting body to obtain the cutting body of each process;
[0045] 5) Through the processing feature mapping operation, the process cutting body is mapped to the processing feature, and then the process model is generated through operations such as sorting and Boolean operations.
[0046] figure 2 It is...
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The invention belongs to the field of computer-aided process planning, and particularly relates to an automatic generation method for a three-dimensional process model of a shaft machining part, whichdirectly decomposes a cutting body into process cutting bodies through operations such as segmentation, Boolean operation and the like of the three-dimensional process model of the part so as to quickly and accurately generate the three-dimensional process model of the shaft part. The problems that in the prior art, a segmentation and combination algorithm is complex, operation steps are tedious,efficiency is low, and accuracy is not high are solved.
Description
technical field [0001] The invention belongs to the field of computer-aided process planning, in particular to a method for automatically generating a three-dimensional process model of a shaft machined part. Background technique [0002] In the field of mechanical processing (referred to as "machining"), 3D CAD and CAM systems have been widely used in engineering, but compared with them, most CAPP systems still stay in the situation where 2D drawings are the mainstay and 3D models are supplementary. , leading to the disconnection of CAD and CAM information, becoming a bottleneck restricting the integration of 3D CAD / CAPP / CAM. The process model is an intermediate model formed after each processing process is completed, which can reflect the processing evolution state of the geometric structure of the part. Using the three-dimensional process model as the information carrier of machining process, it can intuitively and efficiently assist craftsmen in process planning and gui...
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IPC IPC(8): G06F30/17G06F30/20G06T17/00G06Q10/06G06Q50/04
CPCG06Q10/06316G06Q50/04G06T17/00G06F30/17G06F30/20Y02P90/30
Inventor张贺邵晓东何东
OwnerXIDIAN UNIV