Design method for improving machine tool machining precision

A technology of processing accuracy and design method, applied in computer control, comprehensive factory control, instrument, etc., can solve problems such as complexity, increased machine tool manufacturing cost, and unsatisfactory real-time processing effect

Active Publication Date: 2016-02-03
XI AN JIAOTONG UNIV
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Problems solved by technology

The research on improving the machining accuracy of machine tools at home and abroad mainly focuses on the error compensation of the machining process; however, the machining error compensation method of machine tools requires complex ...

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  • Design method for improving machine tool machining precision
  • Design method for improving machine tool machining precision
  • Design method for improving machine tool machining precision

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Embodiment Construction

[0053] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0054] Such as figure 1 As shown, the present invention is a design method for improving the machining accuracy of machine tools, which includes two parts: the first part is the establishment of the dynamic error transfer model of the machine tool and the identification of sensitive error parts of the machine tool, and the second part is the implementation method for improving the machining accuracy of the machine tool. In order to analyze the influence of the deformation of the machine tool parts on the final machining accuracy and identify the sensitive error parts of the machine tool, it is necessary to establish a dynamic error transfer model of the machine tool according to the machine tool motion transfer chain. The machine tool components in the machine tool analyzed in the present invention at least include: bed, column, sliding slide, tool head...

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Abstract

The invention discloses a design method for improving machine tool machining precision. The design method comprises three steps of: (1) establishing a machine tool dynamic error transmission model according to a machine tool movement transmission chain; (2) identifying error sensitive parts of a machine tool in such a manner that according to the established machine tool dynamic error transmission model, dynamic error sensitive coefficients of all parts corresponding to all machining positions of a workpiece are calculated, the deformation amounts of all the parts of the machine tool in each direction are simultaneously analyzed, and finally the error sensitive parts are identified according to the dynamic error sensitive coefficients and the deformation amounts of all the parts; and (3) simultaneously carrying out adjustment on the layout and rigidity of the error sensitive parts, reducing the sensitive coefficients of the parts, simultaneously reducing the deformation amounts of the part, and improving the machining precision of the machine tool. The layout change of the machine tool and the rigidity improvement of the error sensitive parts of the machine tool can be carried out in the design beginning stage, a basis is provided for the design of the high-precision machine tool, the integral machining error of the machine tool is reduced, and the manufacturing cost of the machine tool is lowered.

Description

technical field [0001] The invention relates to a design method for improving the machining accuracy of a machine tool. Background technique [0002] With the increasing demand of machine tools, how to improve the performance of machine tools has become a research hotspot. The performance of the machine tool mainly includes dynamic response characteristics, overall machine quality, structural rigidity, machining accuracy, etc. Machining accuracy is an important parameter to evaluate the performance of machine tools. How to improve the machining accuracy of machine tools is the development trend of machine tools in the future. The processing accuracy of the machine tool affects the processing quality of the product, so how to improve the processing accuracy of the machine tool is of great significance. The researches on improving the machining accuracy of machine tools at home and abroad mainly focus on the error compensation of the machining process; however, the machining...

Claims

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Application Information

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IPC IPC(8): G05B19/404
CPCG05B19/404G05B2219/35408Y02P90/02
Inventor 赵丽萍陈虹任要义勇
Owner XI AN JIAOTONG UNIV
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