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Method for measuring angular errors of rotating table of numerical control machine

A technology of rotary table and corner error, which is used in measuring/indicating equipment, manufacturing tools, metal processing equipment, etc., and can solve the problems of accurate measurement method of rotary table error without CNC machine tools.

Inactive Publication Date: 2010-12-15
UNIV OF SHANGHAI FOR SCI & TECH +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

At present, there is no accurate measurement method for the angle error of the rotary table of CNC machine tools

Method used

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  • Method for measuring angular errors of rotating table of numerical control machine
  • Method for measuring angular errors of rotating table of numerical control machine
  • Method for measuring angular errors of rotating table of numerical control machine

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Experimental program
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Embodiment Construction

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

[0037] 1. Measurement method of rotation angle error of rotary table of CNC machine tool

[0038] The schematic diagram of the two-degree-of-freedom CNC rotary table is as follows: figure 1 shown. According to the needs of workpiece processing, the CNC rotary table is driven by the index drive motor and the angle drive motor, and performs two-degree-of-freedom rotary motion around the X-axis and Z-axis respectively. The angle error of the CNC rotary table is an important indicator of the system characteristics of the rotary table, and it also directly determines the machining accuracy of the CNC machining center. The rotation angle errors of the CNC rotary table around the X-axis and Z-axis are defined as:

[0039] δ X (θ i ) = θ i -θ i ' (1)

[0040] δ Z (θ j ) = θ j -θ j ' ...

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Abstract

The invention relates to a method for measuring the angular errors of a rotating table of a numerical control machine, which comprises the following steps of: firstly, determining the angular errors of the numerical control rotating table rotating around X axis and Y axis; using a high-precision standard ball as a measuring basis, determining the actual motion trail of the numerical control rotating table according to the special position of the measuring standard ball, and calculating the angular errors of the numerical control rotating table rotating around the X axis and the Y axis, wherein the standard ball is supported by a base bracket and fixed on the rotating table. In the invention, the standard ball and an infrared three-dimensional workpiece measuring head are used for forming a measuring system, the position of circle center and the angular errors of the numerical control rotating table are calculated by detecting the motion position of the standard ball, thereby providinga basis for compensating the annular errors of the rotating table.

Description

technical field [0001] The invention relates to a method for detecting the rotation angle error of the rotary worktable of a numerically controlled machine tool, in particular to a method for measuring the rotational angle error of the rotary worktable of a five-axis linkage machine tool numerically controlled machine tool. Background technique [0002] The rotary table of CNC machine tools is a key component used in five-axis linkage machine tools. The position accuracy of the rotary motion of the rotary table is the key factor that determines the position reference and motion reference of the workpiece. Therefore, the angle error detection technology of the rotary table of CNC machine tools has a great The guarantee of accuracy is very important, and it is a key technology that must be solved for high-precision machine tools. At present, there is no accurate measurement method for the angle error of the rotary table of the CNC machine tool. Contents of the invention [...

Claims

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Application Information

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IPC IPC(8): B23Q17/00B23Q17/24
Inventor 李郝林吴晓健
Owner UNIV OF SHANGHAI FOR SCI & TECH
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