Equal-chord-error variable-step tangent interpolation method

A bow height error and variable step length technology is applied in the fields of bow height error variable step length tangent interpolation, multi-axis machining tool path planning operations, and can solve the problem of high machining accuracy

Inactive Publication Date: 2015-11-11
TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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Problems solved by technology

[0008] In order to solve the problems existing in the traditional method in multi-axis machining tool path planning step size calculation, the present invention proposes a tangent interpolation method with equal bow height error variable step size, which adapts to the change of surface curvature and adjusts the processing step size automatically to realize The maximization of the processing step within the tole

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  • Equal-chord-error variable-step tangent interpolation method
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[0030] In order to make the object, technical solution and advantages of the present invention clearer, the present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.

[0031] On the contrary, the invention covers any alternatives, modifications, equivalent methods and schemes within the spirit and scope of the invention as defined by the claims. Further, in order to make the public have a better understanding of the present invention, some specific details are described in detail in the detailed description of the present invention below. The present invention can be fully understood by those skilled in the art without the description of these detailed parts.

[0032] The present invention relates to a tangent line interpolation method with constant bow height e...

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Abstract

The invention belongs to the field of a numerical control technology and especially relates to an equal-chord-error variable-step tangent interpolation method. The method is mainly used in multi-axis machining tool-path planning work, is suitable for surface curvature variable self-adaptative adjustment of machining step-length, realizes maximization of machining step-length within chord error range, can be used to obtain the fewest curve discretization segments and has high machining efficiency. By a new equal-chord-error step-length method, a tool path track is determined. Chord errors within each approximation line segment are uniform and consistent. Machining precision is high.

Description

technical field [0001] The invention belongs to the technical field of numerical control, and in particular relates to a tangent interpolation method with constant bow height error and variable step length, which is mainly used for multi-axis machining tool path planning operations. Background technique [0002] In recent years, due to its higher processing efficiency and better processing quality, five-axis machining has been used in the field of free-form surface (free-form surface refers to the curve whose surface shape cannot be continuously processed and has the arbitrary characteristics of traditional processing) parts manufacturing more and more widely. Most of the five-axis CNC machining of free-form surfaces currently uses commercial CAM software for auxiliary programming. Since the general CNC system only has the ability of spatial linear interpolation, the tool paths generated by the CAM software are composed of a large number of small straight line segments. Thi...

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Application Information

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IPC IPC(8): G05B19/4103
CPCG05B19/4103G05B2219/34083
Inventor 杨振玲杜娟董芸霞王有利闫献国
Owner TAIYUAN UNIVERSITY OF SCIENCE AND TECHNOLOGY
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