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High-speed processing-oriented surface quality preferred spline real-time interpolation method

A real-time interpolation, surface quality technology, applied in the direction of instruments, computer control, simulators, etc., can solve the problem of no separate control of different speed processing areas, and achieve the effect of reducing time

Active Publication Date: 2013-07-10
SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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Problems solved by technology

However, the existing research uses the same parameter setting and speed planning strategy for the entire processing process, and does not control the processing areas at different speeds separately.

Method used

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  • High-speed processing-oriented surface quality preferred spline real-time interpolation method
  • High-speed processing-oriented surface quality preferred spline real-time interpolation method
  • High-speed processing-oriented surface quality preferred spline real-time interpolation method

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Embodiment Construction

[0037] The present invention will be described in further detail below in conjunction with the accompanying drawings.

[0038] Such as figure 1 As shown, according to the Salomon curve, the entire machining process can be divided into low-speed machining area, transition area, high-speed machining area and forbidden area according to the speed value. The processing characteristics of the low-speed processing area are basically the same as those of the traditional processing area. Due to the low processing speed, the main factor affecting the quality of the processed surface is the change of the output force of the spindle motor. Therefore, as long as the continuous transition of the acceleration is ensured in this interval, the maximum combined acceleration that the machine tool can provide can be fully utilized.

[0039] The spline curve real-time interpolation method oriented to high-speed machining with priority of surface quality comprises the following steps:

[0040] P...

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Abstract

The invention relates to a high-speed processing-oriented surface quality preferred spline real-time interpolation method, which comprises the following steps of: preprocessing a processing path in an interpreter of a numerical control system to obtain a processing speed curve; inputting the obtained processing speed curve into a motion controller of the numerical control system to perform real-time interpolation; and transmitting coordinate information obtained by the real-time interpolation to a servo device to drive a motor to run. According to a surface quality preferred spline real-time interpolation algorithm provided by the invention, continuous transition of uniaxial acceleration is realized through limitation of uniaxial acceleration and smooth transition of speed curve, so that a smooth processing speed curve is obtained, and automatic adjustment of a speed planning algorithm of different processing intervals is realized.

Description

technical field [0001] The invention relates to a speed processing technology of a numerical control system, in particular to a spline curve real-time interpolation method with surface quality priority for high-speed machining. Background technique [0002] The high-speed machining technology of complex curved surfaces has always been a difficult problem in CNC machining. The traditional machining method first discretizes complex curved surfaces into tiny straight line segments and arcs in the CAM system, and then sends them to the CNC system in the form of G codes. The large number of these discretely generated small straight line segments and circular arcs has caused a great burden on the data transmission of the numerical control system. Moreover, due to the change in the direction of the machining path, frequent acceleration and deceleration are required for speed planning on these small straight line segments and arcs, which will make it difficult to improve the machini...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G05B19/41
Inventor 林浒孙玉娥于东韩旭卜霄菲
Owner SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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