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Tolerance design method of multi-axis machine tool parts based on comprehensive geometric precision

A multi-axis machine tool, geometric accuracy technology, applied in the field of tolerance design of multi-axis machine tool parts based on comprehensive geometric accuracy, can solve the problems of not considering the tolerance of moving parts, long design cycle, poor feasibility, etc., to achieve a wide range of applications , strong reliability, design flexibility and excellent versatility

Inactive Publication Date: 2016-12-21
SHANGHAI UNIV
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Problems solved by technology

[0003] The purpose of the present invention is to solve the precision design of the existing multi-axis machine tool, without considering the specific determination of the tolerance of the specific moving parts of the machine tool, the design cycle is long and the feasibility is poor, so as to provide a multi-axis machine tool based on comprehensive geometric accuracy. The component tolerance design method ensures the comprehensive geometric accuracy of the machine tool, the design flexibility and versatility are good, and the reliability is strong

Method used

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  • Tolerance design method of multi-axis machine tool parts based on comprehensive geometric precision
  • Tolerance design method of multi-axis machine tool parts based on comprehensive geometric precision
  • Tolerance design method of multi-axis machine tool parts based on comprehensive geometric precision

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Embodiment 2

[0028] To further illustrate the present invention, in conjunction with figure 1 , figure 2 , image 3 , Figure 4 , Figure 5 with Image 6 To illustrate this embodiment, the multi-axis machine tool component tolerance design method based on comprehensive geometric accuracy is designed based on the TTTRR five-axis CNC machine component tolerance based on comprehensive geometric accuracy. The specific steps are as follows:

[0029] Step 1. Analyze the error of the TTTRR five-axis CNC machine tool along the geometric direction of each axis; for the three axes that move in parallel along the X, Y, and Z directions, each axis will produce three along the X, Y, and Z directions when it changes. Term linear displacement error, the three angular displacement errors around the X, Y, and Z directions; there are also the three linear displacement errors along the X, Y, and Z directions of the two rotation axes AC, and the three linear displacement errors around the X, Y, and Z direction...

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Abstract

The invention relates to a tolerance design method of multi-axis machine tool parts based on comprehensive geometric precision, in particular to a tolerance design method of multi-axis machine tool parts to solve the problems that an existing comprehensive geometric precision design of a multi-axis machine tool is not implemented into a specific tolerance design of each part forming a kinematic pair, and the comprehensive geometric precision design has a long period and a poor feasibility, and does little help to subsequent comprehensive error compensation direction of the machine tool. The design method mainly comprises the following steps: step 1, analyzing geometric error items of the multi-axis machine tool; step 2, giving geometric tolerance items required to be controlled for each part forming the kinematic pair of the machine tool; step 3, establishing a geometric tolerance analysis model of the multi-axis machine tool; and step 4, giving an emulation analysis report of comprehensive geometric errors of the machine tool, and modifying corresponding part tolerance values. The tolerance design method provided by the invention is used for tolerance design of the multi-axis machine tool parts.

Description

Technical field [0001] The invention relates to a multi-axis machine tool component tolerance design method, in particular to a multi-axis machine tool component tolerance design method based on comprehensive geometric accuracy. Background technique [0002] As traditional three-axis machine tools can no longer meet the status quo, everyone turned their attention to multi-axis machine tools. Compared with the three-axis machine tool, there are several degrees of freedom, and the machining capacity is improved, and the machining accuracy is also attracting attention. Geometric error is the main component of machine tool error, and its source is the geometric error of the components that make up the machine tool axis movement. At present, the more commonly used multi-axis machine tool geometric accuracy design is to calculate the accuracy parameters along the movement direction of each axis according to the overall geometric accuracy given by the machine tool, and then optimize th...

Claims

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Application Information

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IPC IPC(8): G06F17/50
CPCG06F30/20G06F2111/04
Inventor 朱立昌吴俊任丽佳赵倩雯谢林健李敬雨李明韦庆玥
Owner SHANGHAI UNIV
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