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
CN103575244AInactive Publication Date: 2014-02-12XIAN TECH UNIV +1
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
XIAN TECH UNIV
Publication Date
2014-02-12
Estimated Expiration
Not applicable · inactive patent

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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.
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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...

Claims

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