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Space error decoupling compensation method for numerically controlled worm grinding wheel gear grinding machine

A technology of worm grinding wheel and compensation method, which is applied in the direction of program control, computer control, general control system, etc., and can solve the problems that a unified and effective machine tool error decoupling compensation method has not yet been formed, and the theory is not very mature.

Active Publication Date: 2018-04-27
CHONGQING UNIV
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Problems solved by technology

After years of research and development, machine tool error decoupling methods can be basically divided into direct solution based on error kinematics model, simplified model solution and numerical iterative solution. The theory is still not very mature, and a unified and effective machine tool error decoupling has not yet been formed. compensation method

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  • Space error decoupling compensation method for numerically controlled worm grinding wheel gear grinding machine
  • Space error decoupling compensation method for numerically controlled worm grinding wheel gear grinding machine
  • Space error decoupling compensation method for numerically controlled worm grinding wheel gear grinding machine

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Embodiment Construction

[0041] The present invention will be described in further detail below in conjunction with the accompanying drawings and specific embodiments.

[0042] Taking the YW7232 CNC worm wheel gear grinding machine produced by a certain factory as the research object, the present invention will be further described in detail in conjunction with the accompanying drawings and specific implementation methods.

[0043] Such as figure 1 , 2 As shown, a spatial error decoupling compensation method of CNC worm gear grinding machine, the structural analysis and motion analysis of CNC worm gear grinding machine, the 41 geometric error elements of the machine tool are obtained as shown in the following table:

[0044] All geometric error elements of the machine tool are as follows, a total of 41 geometric error elements, including 30 position-related errors and 11 position-independent errors.

[0045]

[0046] (Taking the X-axis and C-axis as examples to illustrate the meanings of position...

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Abstract

The invention discloses a space error decoupling compensation method for a numerically-controlled worm grinding wheel gear grinding machine. The space error decoupling compensation method belongs to the field of machine tool error compensation, is used for decoupling compensation of multi-axis machine tool space errors, and solves the problems that the multi-axis machine tool space errors are difficult to decouple and compensate. Different from other decoupling methods, the space error decoupling compensation method adopts a method of stepwise decoupling after simplifying a model, can directlyobtain analytical expressions of errors of each axis through calculation, and greatly reduces the amount of calculation. The space error decoupling compensation method comprises the steps of: firstly, establishing an inter-machine-tool transformation matrix based on a multi-body system theory and homogeneous coordinate transformation, and deducing a machine tool space error model caused by geometric error elements; secondly, performing a series of simplification such as ignoring high-level small quantities and extracting independent terms of the error model; and finally, conducting stepwise decoupling on the machine tool space errors according to a certain sequence based on the simplified model.

Description

technical field [0001] The invention belongs to the field of precision mechanical transmission design and manufacture. Based on the error compensation technology and related theories, the spatial error caused by the geometric error of the CNC worm grinding wheel gear grinding machine is analyzed, the key geometric error elements of the machine tool are found, and the effective space for the CNC gear grinding machine is calculated. Error decoupling compensation is used to improve the machining accuracy of the gear grinding machine. Background technique [0002] The machining accuracy of the machine tool mainly depends on the size of the machine tool error. The basic methods to improve the machine tool accuracy can be divided into error elimination method and error compensation method. The error elimination method eliminates machine tool errors from the source by improving the manufacturing accuracy of machine tool components, designing the thermal stability of the machine too...

Claims

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Application Information

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IPC IPC(8): G05B19/404
Inventor 李国龙徐凯董鑫何坤廖琳
Owner CHONGQING UNIV
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