Method for thermal deformation error compensation of digital control gear hobbing machine

A technology of thermal deformation error and compensation method, which is applied in the direction of manufacturing tools, other manufacturing equipment/tools, etc., can solve the problem that the establishment of error compensation model is not practical, does not involve the mathematical modeling and compensation method of machine tool thermal error, CNC machine tools The positioning and trajectory tracking accuracy of the feed system is not high
CN101797704AActive Publication Date: 2010-08-11CHONGQING MACHINE TOOL GROUP +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
CHONGQING MACHINE TOOL GROUP
Publication Date
2010-08-11

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Abstract

The invention discloses a method for thermal deformation error compensation of a digital control gear hobbing machine, which comprises the following steps of: 1, adopting temperature and displacement sensors to detect variable values of a temperature and a thermal deformation displacement on line when the digital control gear hobbing machine is in the course of working; 2, using a fuzzy clustering analytic method to calculate linearly dependent coefficients of variables of the temperature and the displacement, performing classification and optimization on the variable of the temperature, and determining the displacement variable Xi for model building and optimized p temperature independent variables T1, T2, T3, ..., and Tp; 3, adopting a multiple linear regression-least square method to establish a mathematic model of thermal errors and temperature variables; and 4, realizing online real-time compensation of thermal deformation errors of the digital control gear hobbing machine by using a zero programming system. The method solves thermal deformation error problems of a processing gear of the digital control gear hobbing machine, and by performing the online real-time error compensation on the digital control gear hobbing machine, the method improves the gear processing quality, the accuracy and the efficiency, reduces the rejection rate, saves the cost and shortens the processing cycle.
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Description

technical field

[0001] The invention belongs to the technical field of the gear processing process of a numerically controlled gear hobbing machine, and in particular relates to a thermal deformation error compensation method of a numerically controlled gear hobbing machine. Background technique

[0002] The measurement of temperature and thermal deformation displacement value during the cutting process of CNC gear hobbing machine and the accurate establishment of thermal deformation error compensation model are the key steps of thermal deformation error compensation of gear hobbing machine. Chinese patent application 200810039013.4 discloses a thermal error compensation of CNC machine tool The method of determining the position of the temperature measuring point only involves the use of the principle of information theory to determine the optimal temperature and thermal deformation value for modeling, but does not involve the mathematical modeling and compensation method of ...

Claims

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