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A helix guidance surfaces numerical control processing method

A processing method and helical technology are applied in the field of CNC trajectory planning and processing to achieve the effects of improving processing efficiency, reducing costs and reducing machine tool noise.

Active Publication Date: 2008-09-10
DALIAN UNIV OF TECH
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  • Abstract
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Problems solved by technology

This method overcomes the shortcomings of the existing technology, avoids the cumbersome calculation of intersection and the judgment of self-intersection and mutual intersection in the existing method, and the trajectory is continuous and smooth without the problem of cusp copying

Method used

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  • A helix guidance surfaces numerical control processing method
  • A helix guidance surfaces numerical control processing method
  • A helix guidance surfaces numerical control processing method

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Embodiment Construction

[0016] specific implementation plan

[0017] Specific embodiments of the present invention will be described in detail in conjunction with the accompanying drawings. attached figure 1 It is a schematic diagram of the method of spiral machining trajectory. As shown in the figure, the discrete surface first establishes the corresponding relationship with the parameter circle domain based on the mapping, and then generates the machining trajectory of the free-form surface through the plane spiral guidance. Specific steps are as follows:

[0018] 1. First, plan the processing trajectory according to the three-dimensional drawing of the workpiece to be processed:

[0019] a. What this embodiment uses is solid three-dimensional model, at first carry out meshing to the processed surface by means of Solidworks software, the side length of triangular mesh is 5mm, see appendix figure 2 .

[0020] b. Map the gridded surface to be processed on the circular domain of any given plane,...

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Abstract

The invention, a spiral-guided curved face numerical control machining method, belongs to the numerical control trajectory planning and processing areas. A spiral-guided curved face numerical control machining method is, processing the workpiece with 3D curved face mesh, making spline-interpolation-based planar isometric or non-isometric spiral line as the parameter line, and by mapping, generating 3D physical space processing trajectory, that is, with the clear mathematical expressed planar spiral line guidance, and the pitch of the spiral line should be determined by the spacing requirements of the processing trajectory. First, according to the 3D curved face of the workpiece, make processing trajectory planning; then, according to the used numerical control machine make post-processing to the planed trajectory. Using the spiral-line guided curved face machining method, the cutter movement smooth, wearing small, machine noise low, efficiency high, and save a lot of processing time, decrease the production cost.

Description

technical field [0001] The invention belongs to the field of numerical control trajectory planning and processing. Background technique [0002] The isosection line method is a traditional method for processing complex surfaces such as mesh surfaces and composite surfaces. The principle of this method is simple and the calculation efficiency is high, but the generated trajectory form is too single, and it is difficult to adapt to the different needs of various trajectory planning with different shapes and functions. Especially when the boundary shape of the curved surface is complex, it is difficult to ensure the consistency of the cross-sectional linear trajectory with the boundary, and it is easy to generate more and shorter paths, which greatly reduces the processing efficiency and accelerates the wear of the tool. For this reason, it is necessary to propose more adaptable processing methods. The spiral trajectory has good technological characteristics, and the directio...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/4099G05B19/41
Inventor 孙玉文郭东明贾振元任斐
Owner DALIAN UNIV OF TECH
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