Small line segment fairing method based on space plane normal vector

A technology of small line segment and plane method, which is applied in the direction of program control, instrument, computer control, etc., can solve the problems such as the decrease of processing speed and processing quality, the difficulty of determining the conditions of curve formation, and the lack of utilization

Active Publication Date: 2020-12-08
GUANGZHOU COLLEGE OF SOUTH CHINA UNIV OF TECH
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Problems solved by technology

[0003] The current smoothing method has high performance in theory, but it still encounters problems such as difficult determination of curve composition conditions, complex program implementation, and difficulty in applying to real-time numerical control systems. Duri

Method used

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  • Small line segment fairing method based on space plane normal vector
  • Small line segment fairing method based on space plane normal vector
  • Small line segment fairing method based on space plane normal vector

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Embodiment Construction

[0036] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0037] Such as Figure 1-Figure 5 As shown, a small line segment smoothing method based on the space plane normal vector, including the preset determination angle value, the maximum line segment processing length and the maximum allowable deviation distance;

[0038] The method includes the following steps:

[0039] 1) Read the NC equipment file and scan the instructions in the NC program one by one.

[0040] 2) Judging whether the command in the current NC program is a linear interpolation code, if it is not a linear interpolation code, then enter step 1); if it is a linear interpolation code, then enter step 3).

[0041] 3) Judging whether to perform smoothing processing on the current line segment of the linear interpolation code.

[0042] (3.1) Judging whether the length of the line segment of the current linear interpolation c...

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Abstract

The invention provides a small line segment fairing method based on a space plane normal vector. The small line segment fairing method comprises a preset judgment angle value, a line segment processing length maximum value and a maximum allowable deviation distance. The small line segment fairing method based on the space plane normal vector comprises the following steps: 1) reading a numerical control equipment file and scanning instructions in a numerical control program one by one; 2) judging whether an instruction in the current numerical control program is a linear interpolation code or not, and if not, entering the step 1); if the code is the linear interpolation code, entering the step 3); 3) judging whether to carry out fairing processing on the current linear interpolation code line segment or not; 4) carrying out fairing processing on the current linear interpolation code line segment; and 5) judging whether an end point in the numerical control program is reached, if so, ending the operation, and if not, entering the step 1). The method has the advantages of being high in operation speed and good in machining quality.

Description

technical field [0001] The invention relates to the field of numerical control machining, in particular to a method for smoothing small line segments based on space plane normal vectors. Background technique [0002] In the field of numerical control machining, the numerical control system generally performs machining according to the path described by the NC code generated by CAM (Computer Aided Manufacturing) software. For the most commonly used linear interpolation code (G01) in the domestic NC machining industry today, its trajectory is composed of a large number of tiny straight line segments approaching the workpiece surface. When the workpiece surface is a complex curved surface, in order to meet the machining contour accuracy requirements, the CAM software The number of small line segments generated will increase significantly, and the length of the line segments will also be shortened accordingly, so it is inevitable that there will be irregularities between the cod...

Claims

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Application Information

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IPC IPC(8): G05B19/4097
CPCG05B19/4097G05B2219/32153
Inventor 冯瑞珏李志锋郭琳王智东邓筠李玉姣
Owner GUANGZHOU COLLEGE OF SOUTH CHINA UNIV OF TECH
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