Method for automatically calibrating measuring head polarization quantity of polar coordinates gear measuring center

A gear measurement and offset technology, which is applied in the direction of measuring devices, instruments, etc., can solve the problem of low accuracy of measuring workpieces, and achieve the effect of reducing installation accuracy requirements

Inactive Publication Date: 2014-02-12
XIAN TECH UNIV +1
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Problems solved by technology

[0005] The purpose of the present invention is to provide an automatic correction method for the offset of the polar coordinate gear measuring center probe, so as to overcome the problem of low accuracy of the existing polar coordinate method for measuring workpieces

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  • Method for automatically calibrating measuring head polarization quantity of polar coordinates gear measuring center
  • Method for automatically calibrating measuring head polarization quantity of polar coordinates gear measuring center
  • Method for automatically calibrating measuring head polarization quantity of polar coordinates gear measuring center

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Embodiment Construction

[0034] The present invention will be described in detail below in combination with specific embodiments.

[0035] see figure 1 and figure 2 A method for automatically correcting the offset of a polar coordinate gear measuring center probe, comprising the following steps:

[0036] 1) Use the double-sided involute tooth profile to correct the offset of the probe, assuming that the radius of the base circle of the involute tooth profile is r b , using an involute template or a tooth surface of a standard involute gear, assuming that the offset in the vertical direction of the R axis caused by the installation error of the probe is b 0 Offset R with R axis direction 0 ;

[0037] 2) Clamp the involute tooth profile on the rotary shaft table, and set the measuring head at a measuring position accessible to one side of the involute tooth profile, and use the polar coordinate method to measure the involute tooth profile, which can Obtain a series of points on the involute (R 1j...

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Abstract

The invention relates to a method for automatically calibrating the measuring head polarization quantity of a polar coordinates gear measuring center. According to an existing polar coordinates gear measuring method, basic conditions are that when a measuring head is installed, the center of the measuring head must be located on the R axis, or else, the zero calibration error can be caused. The single side face of an involute gear undergoes the double-face measurement before and after being turned over, two sets of measured values are substituted into the polar coordinates method error calculation formula comprising polarization parameters, the polarization quantity and the offset quantity of the measuring head are worked out and are introduced into the workpiece measurement error calculation modifier formula, and automatic compensation for the measuring head installing error is achieved. According to the automatic correcting method, the offset quantity of the measuring head relative to the original calibration rotation center can be directly solved, the requirement for mechanical installing precision is lowered, the calibration on measuring heads can be carried out in batches, and a foundation is laid for automatically replacing the measuring heads.

Description

technical field [0001] The invention relates to the technical field of coordinate measuring machines, in particular to an automatic correction method for the offset of a polar coordinate gear measuring center measuring head. Background technique [0002] The gear measurement center is the crystallization of the integrated application of information technology, computer technology and numerical control technology on gear measuring instruments, and is a milestone in the development of coordinate gear measuring instruments. It is mainly used for the detection of single geometric accuracy of gears, and can also be used for the measurement of the overall error of gears. The gear measurement center is composed of three linear axes and a rotary axis, and the linear axes are the Z axis in the vertical direction, the R axis and the T axis in the horizontal direction. Its zero point calibration method has [1] : Standard mandrel calibration method, fixed ball calibration method, blo...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B21/00
Inventor 卢春霞王建华劳奇成李少康王晓丽张新华张盟张瑜徐臻
Owner XIAN TECH UNIV
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