Curve contour error compensation adjustment control system and error compensation method
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A Contour Error, Adjustment Control Technology
Inactive Publication Date: 2015-09-23
张万军
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Problems solved by technology
[0004] (1) In the past, the machine tool did not have a device for compensating the curve profile error, and only relied on the general CNC machine tool. Through the hardware and software programs on the CNC machine tool, only a small amount of compensation was done, and there was no large-scale compensation, or even a special one. Error compensation device, the effect of error compensation is very poor;
[0005] (2) The previous curve profile error compensation device did not have a built-in cur
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Embodiment 1
[0093] This embodiment provides an adjustment control system for curve cross-coupling contour error compensation, such as figure 1 As shown, it includes CNC PC, curve cross-coupling contour error compensation adjustment motion control card, driver, servo motor module and position feedback detection module. The numerically controlled PC includes a numerically controlled PC, a display and a PCI interface chip; one end is connected to the display to realize man-machine dialogue, and the other end is connected to the curve cross-coupling contour error compensation and adjustment motion control card through the PCI interface chip to realize the curve cross-coupling contour error compensation.
[0094] The described curve cross-coupling contour error compensation adjustment motion control card includes: the curve cross-coupling contour error compensation adjustment motion control card, PCI9025 chip, CPLD, communication module, I / O interface circuit module and curve cross-coupling c...
Embodiment 2
[0163] The experimental effect that the present invention carries out:
[0164] In order to verify the correctness and feasibility of the cross-coupling error compensation algorithm of CNC multi-axis linkage machine tools, a high-end three-axis linkage CNC machine tool is built to analyze error compensation. The experimental platform adopts an open CNC system, which can establish error models and real-time online error compensation, the experimental process such as Figure 8 As shown, the specific steps are:
[0165] Step1: Determine the following error of the curve according to the contour error of the curve;
[0166] ε=-E x C x +E y C y +E z C z ;
[0167] Step2: Determine the scheme of curve cross-coupling error compensation;
[0168] That is, the algorithm of curve cross-coupling error compensation;
[0169] ε=K px (E x +pE rx )+K py (E y +pE ry )+K pz (E z +pE rz );
[0170] Step3: The method of decoupling;
[0171] (1), x / y axis decoupling;
[0172]...
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Abstract
The invention discloses a curve cross coupling contour error compensation adjustment control system, which comprises a numerical control PC, a curve cross coupling contour error compensation adjustment motion control card, a driver, a servo motor module, and a position feedback and detection module. The numerical control PC comprises a numerical control PC body, a display and a PCI interface chip, wherein one end of the numerical control PC is connected with the display to realize man-machine conversation, and the other end is connected with the curve cross coupling contour error compensation adjustment motion control card through the PCI interface chip, so as to realize compensation of curve cross coupling contour errors. Meanwhile, the invention further discloses a control method for curve cross coupling contour error compensation. The curve contour error compensation adjustment control system and the error compensation method have the advantages of high regulation and control efficiency, good stability, high practicality and the like, realizes cross coupling compensation of curve contour errors; and the contour error compensation adjustment control method can greatly reduces contour errors, improves interpolation control precision, and can produce good economic and social benefits.
Description
technical field [0001] The invention relates to the fields of electromechanical integrated numerical control interpolation and contour error control, more specifically, an adjustment control system for curve contour error compensation and an error compensation method. Background technique [0002] In recent years, with the rapid development of the manufacturing industry, multi-axis linkage CNC machine tools have been widely used in the fields of processing tools in aerospace, navigation, precision mold and other manufacturing industries due to their advantages of high speed, high precision and high quality processing. However, multi-axis linkage CNC machine tools often produce contour errors during machining due to mechanical transmission, electrical control, dynamic response characteristics of servo systems, and contour errors to coordinate the parameters of each axis to match each axis. [0003] The adjustment control system and error compensation method of curve contour e...
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Application Information
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