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Three-dimensional process model building method based on cutter radius

A tool radius, process model technology, applied in 3D modeling, image data processing, instruments, etc., can solve problems such as poor practicability, and achieve the effect of improving efficiency and wide range of applications

Active Publication Date: 2015-08-05
南京信航科创发展有限公司
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Problems solved by technology

[0003] In order to overcome the shortcomings of poor practicability of the existing three-dimensional process model construction methods, the present invention provides a three-dimensional process model construction method that incorporates tool radius

Method used

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  • Three-dimensional process model building method based on cutter radius
  • Three-dimensional process model building method based on cutter radius
  • Three-dimensional process model building method based on cutter radius

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Embodiment Construction

[0033] refer to Figure 1-3 . The specific steps of the three-dimensional process model construction method of the fusion tool radius of the present invention are as follows:

[0034] Given the rough machining process content and process parameters of a part (as shown in Table 1), a three-dimensional process model is constructed by using the method of fused tool radius.

[0035] Table 1 Rough machining process content of a certain part

[0036]

[0037] (a) Input the registered part design model M a and blank model M b .

[0038] (b) Extract the manufacturing feature set from the part design model, and specify the base surface, extrusion start surface and extrusion end surface of each manufacturing feature.

[0039] MF i =(bf i ,sf i ,tf i ), 0≤i≤n (1)

[0040] In the formula, MF i Indicates the i-th manufacturing feature, n is the total number of manufacturing features, bf i 、sf i and tf i Respectively denote as the base plane of the i-th manufacturing featur...

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Abstract

The invention discloses a three-dimensional process model building method based on the cutter radius to solve the technical problem that the existing three-dimensional process model building method is poor in practicability. According to the technical scheme, the method comprises the steps of serializing manufacture features into machining elements, and performing Boolean operation on a machining element body and a precursor process model by taking the machining element body as a basic unit to generate a three-dimensional process model. The base plane ring of the manufacture features is acquired as an initial curve, offset and intersection calculation is performed on the initial curve for multiple times by taking the side margin and the cutter radius as offset parameters, the section contour line of each machining element is acquired, the start plane and the end plane of stretching are specified, the machining element body is built accurately, and the three-dimensional process model is built with the machining element body as a basic unit. As the base ring of the manufacture features is offset by a curve offset algorithm based on the cutter radius and an offset curve is stretched to generate the machining element body, generation of the machining element body is realized, and the three-dimensional process model of actual machining is reflected accurately.

Description

technical field [0001] The invention relates to a method for building a three-dimensional process model, in particular to a method for building a three-dimensional process model that combines tool radius. Background technique [0002] The document "Rapid creation method of inter-process model of three-dimensional machining process [J]. Computer Integrated Manufacturing System, 2014, 20(07): 1546-1552" discloses a rapid construction method of inter-process model of three-dimensional machining process. According to the generation method and characteristics of the machining features of the machined part model, the method divides the machining features into concave features, convex features and transition feature groups; The quilt of the required processing features; use the half-space idea and basic modeling method to obtain and save the manufacturing feature body; generate the part blank model after obtaining all the manufacturing feature bodies, and perform Boolean operations...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T17/10
Inventor 邵立白晓亮张树生侯智慧高鹏
Owner 南京信航科创发展有限公司
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