Error verification method of CA oscillating structure five-axis machine tool

A calibration method and error technology, applied in computer control, metal processing machinery parts, measuring/indicating equipment, etc., can solve problems such as long test period, complicated operation, and high cost

Active Publication Date: 2014-05-21
SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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  • Abstract
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Problems solved by technology

Generally speaking, the existing systems can complete the compensation for the above errors, but the existing measurement methods are complicated to operate, time-consuming and inefficient
For example, the CYCLE996 function of the Siemens system can use high-precision 3D probes to complete error measurement and structural parameter calibration, but the measurement scheme based on 3D probes is expensive and the test cycle is long

Method used

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  • Error verification method of CA oscillating structure five-axis machine tool
  • Error verification method of CA oscillating structure five-axis machine tool
  • Error verification method of CA oscillating structure five-axis machine tool

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Embodiment Construction

[0035] The present invention will be further described in detail below in conjunction with the accompanying drawings and embodiments.

[0036] 1. Error-free kinematics model

[0037] The structure of the error-free CA swing head five-axis machine tool is attached figure 2 As shown, this type of machine tool has two rotary axes, C-axis and A-axis, which rotate around the Z-axis linear axis and the X-axis linear axis respectively.

[0038]Among them, is the offset vector from the C-axis rotation center to the A-axis rotation center, is the offset vector from the A-axis rotation center to the spindle rotation center, and is the actual tool length.

[0039] According to the structure of the CA swing head machine tool, using the homogeneous coordinate transformation and the kinematic modeling theory of the five-axis machine tool, the following kinematic model is established:

[0040] Among them, Rot is the rotation matrix, Trans is the translation matrix, (Q x , Q y , Q z ) r...

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Abstract

The invention relates to the technical field of numerical control, and specifically relates to an error verification method of a CA oscillating structure five-axis machine tool. The error verification of a CA oscillating five-axis machine tool is finished in a high-efficient manner by use of a simple measuring device, the deviation direction of the measuring device, and a meter checking mode. The structure of a five-axis machine tool is analyzed through an error-free kinematic model and an error-containing kinematic model, by combining with the motion interval and the motion direction of a turning shaft, the mobile direction of a measuring point is analyzed, and the mobile direction of each compensation amount needed by actual machine tool error correction is solved so as to finish correction of machine tool structure error parameters. According to the invention, simple measuring devices such as a verification rod and the like are utilized, and the method provided by the invention can be applied to obtaining the deviation of each error item through effective and accurate measuring.

Description

technical field [0001] The invention relates to the technical field of numerical control, in particular to a method for checking the error of a five-axis machine tool with a CA swing head structure. Background technique [0002] Five-axis linkage CNC machine tools are widely used in various fields such as electric power, ships, and aerospace because of their advantages such as high machining precision, high speed, greater flexibility, and high economic benefits. As a key component in the five-axis linkage machine tool, the high-precision double swing head has become an important indicator to measure the performance of the five-axis machine tool. [0003] When assembling a high-precision CA swing head five-axis machine tool, it is very difficult to ensure that the centers of the two rotation axes are at the designed position, and it is very difficult to completely coincide with the rotation centerline of the spindle and the C-axis, and there will be deviations. The deviation...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G05B19/401B23Q17/00
Inventor 王品郑飂默刘峰韩文业李滨
Owner SHENYANG GOLDING NC & INTELLIGENCE TECH CO LTD
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