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A Double Helix Tool Path Planning Method

A tool path and double helix technology, applied in the direction of program control, instrument, electrical program control, etc., can solve the problems of poor processing efficiency, large overlap rate, too conservative, etc., to improve processing efficiency and quality, uniform trajectory, improve The effect of uniformity

Active Publication Date: 2018-12-25
SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in practical applications, in order to ensure the effective coverage of the cutting layer by the tool path, the value of the line spacing of the tool path is often too conservative, the overlap rate is often too large, the processing efficiency is not good, and the existing spiral planning methods can only deal with single connectivity. domains, but not for islands

Method used

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  • A Double Helix Tool Path Planning Method
  • A Double Helix Tool Path Planning Method
  • A Double Helix Tool Path Planning Method

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Embodiment

[0045] Embodiment: The trajectory generation method based on the double helix trajectory of the present invention firstly simplifies the central axis, retains only the "branches" part, and determines the length of each part of the central axis, spreads the wave front sequentially on the central axis, and fuses the wave front, Single helix trajectories are obtained, which in turn generate double helix trajectories. The method steps of concrete double-helix machining trajectory generation are as follows:

[0046] 1. Determine the central axis and simplify

[0047] First obtain the central axis of the graph (outer contour) (such as figure 1 (a), the central axis includes the "branch" part and the "leaf" part). Call the λ-axis filtering method, set the λ value, you can keep the "branch" part of the central axis and remove the "leaf" part of the central axis (such as figure 1(b)-1(d), as the value of λ increases, the "branch" part of the central axis remains and the "leaf" part ...

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Abstract

The invention discloses a double-helix cutter path planning method comprising the following steps: determining the cavity outer contour central axis and filtering; releasing wave fronts on all directions of the central axis so as to simulate wave front propagations with time, and storing the wave front propagation state when the propagation stops; fusing wave fronts stored at all times in sequence, thus obtaining a spiral locus and further obtaining a double helix locus. The locus obtained by the method is good in fairness, small in center curvature, has no withdrawing and cutter lifting, and is suitable for high speed cutting process; compared with an existing locus planning mode, the double-helix cutter path planning method can randomly and flexibly set the double helix center point, is high in efficiency, even in locus, stable in cutter operation, and can complete a complex cavity in one-time moulding without withdrawing and lifting.

Description

technical field [0001] The invention relates to computer graphics, numerical control machining and other technologies, in particular to a double-helix tool path planning method suitable for high-speed machining of plane cavity. Background technique [0002] At present, five-axis high-speed CNC machining technology has become a production technology with economic prospects. It is characterized by high efficiency, high precision and high surface quality. It has very obvious advantages in the processing of complex curved surfaces. The main way to process quality and reduce costs. High-speed machining not only puts forward higher requirements on machine tools, fixtures, tools, etc., but also has extremely strict requirements on the topological geometry and dynamic performance of tool motion paths. For example, if the tool path is not properly arranged, the drastic change in the material removal rate will inevitably affect the efficiency and quality of the machining; at the same...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/19
CPCG05B19/19G05B2219/50029
Inventor 周波赵吉宾李论
Owner SHENYANG INST OF AUTOMATION - CHINESE ACAD OF SCI