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Three-dimensional cycloid-like polishing locus generation method for feeding along cutting path

A trajectory generation and cycloid trajectory technology, which is applied in the field of mechanical processing, can solve the problems of local geometric feature changes on difficult free-form surfaces, and achieve the effect of reducing polishing traces, reducing complexity, and uniform polishing effect

Active Publication Date: 2017-11-21
SOUTH CHINA UNIV OF TECH
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Problems solved by technology

These polishing trajectory planning methods are difficult to adapt to the local geometric feature changes of free-form surfaces.

Method used

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  • Three-dimensional cycloid-like polishing locus generation method for feeding along cutting path
  • Three-dimensional cycloid-like polishing locus generation method for feeding along cutting path
  • Three-dimensional cycloid-like polishing locus generation method for feeding along cutting path

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Embodiment Construction

[0045] The specific implementation of the present invention will be further described below in conjunction with the accompanying drawings and examples, but the implementation and protection of the present invention are not limited thereto.

[0046] figure 1 It is a flow chart of the method for generating a three-dimensional cycloid-like polishing trajectory fed along a tangential path in the present invention.

[0047] Such as figure 1 As shown, a three-dimensional cycloid-like polishing trajectory generation method fed along the line tangent path includes the following steps:

[0048] S1. Import the three-dimensional surface model of the polished workpiece, select the area to be polished, and set the relevant polishing process parameters, including the geometric shape of the polishing tool, the inclination angle of the tool, the polishing feed rate and rotation speed, etc.

[0049] S2. Obtain the surface information of the workpiece model, use the geometric processing metho...

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Abstract

The invention discloses a three-dimensional cycloid-like polishing locus generation method for feeding along a cutting path, and the method comprises the steps: S1, obtaining and building a spatial mapping relation between a three-dimensional curved surface and a two-dimensional parameter region; S2, carrying out the planning of a cutting feeding path in a plane parameter region; S3, calculating the mapping stretching coefficients of the position of the cutting feeding path in two directions of a parameter domain, and adaptively adjusting the step value and radius value of a two-dimensional cycloid of the feeding along the cutting path; S4, taking the cutting feeding path as a lead line according to the step value and radius value of the adaptive two-dimensional cycloid, and generating the locus of the two-dimensional cycloid through continuous iteration, so as to cover the whole plane parameter region; S5, mapping the locus of the two-dimensional cycloid to the three-dimensional curved surface, and obtaining a three-dimensional cycloid-like polishing locus. The method provided by the invention can avoid the generation of a periodic polishing locus through the multiple directivity of the cycloid locus, can improve the polishing uniformity of a free curved surface, and improve the surface quality of the machined workpiece.

Description

technical field [0001] The invention belongs to the field of mechanical processing, in particular to a method for generating a three-dimensional cycloid-like polishing trajectory fed along a line cutting path. Background technique [0002] With the development of digital manufacturing technology, the freeform surface milling process has been automated. However, the polishing of free-form surfaces is currently mainly done by hand, and the polishing quality is limited by the experience of the processing personnel, and the processing efficiency is low, the cost is high, and the stability is poor. The automatic polishing of free-form surfaces has become an urgent problem to be solved in its development and application. [0003] Polishing trajectory planning is a very important link in the polishing process, it is the basis for realizing polishing automation, and it is also a decisive factor affecting the processing quality of the workpiece. Cutting path and circular path are t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06T3/00G06T15/00
CPCG06T15/005G06T3/073G06T3/067
Inventor 李静蓉许晨旸王清辉廖昭洋
Owner SOUTH CHINA UNIV OF TECH
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