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Method of inscribed circle for testing synthesis precision of numerically controlled machine tool

A technology of CNC machine tools and inspection methods, which is applied in the testing of machine/structural components, metal processing machinery parts, measuring/indicating equipment, etc., can solve the problem of inaccurately judging the machining accuracy of CNC machine tools, unstable parts quality, and unsatisfactory requirements Get sufficient satisfaction and other issues to achieve the effect of improving market competitiveness

Inactive Publication Date: 2005-11-16
NANJING HIGH SPEED TRANSMISSION SK NUMERICAL CONTROL EQUIP
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The above inspection methods each have a certain effect, but the final machining accuracy of the CNC machine tool is closely related to many links in the machine assembly process. The existing inspection methods are not capable of accurately judging the actual machining accuracy of the CNC machine tool. The manufacturing accuracy, assembly accuracy, etc. of the bearings, bearing housings, ball screws, nuts, etc.
As a result, problems often occur, resulting in unstable parts quality during user processing, especially when processing complex curved surfaces, the user's requirements cannot be fully met

Method used

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Embodiment Construction

[0017] A method for checking the inscribed circle of the comprehensive precision of a numerically controlled machine tool according to the present invention. First, a regular hexagon is processed on the bar stock, and then a nominal size is consistent with the size of the opposite side of the regular hexagon and is tangent to the regular hexagon. The inscribed circle, and according to the symmetry and tangency between the inscribed circle and the regular hexagon, the comprehensive accuracy of the machine tool is obtained, including the following steps:

[0018] A) Fix the test bar on the machine tool;

[0019] B) The cutting tool adopts the interpolation method to cut the bar to obtain a regular hexagon;

[0020] C) Cutting is also carried out in the regular hexagon by means of interpolation to obtain an inscribed circle whose nominal size is consistent with the size of the opposite side of the regular hexagon and tangent to the regular hexagon;

[0021] D) According to the s...

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Abstract

A method for inspecting comprehensive accuracy of digital controlled machine tool by utilizing inscribed circle includes using runin method to work out regular polygon on testing material first, then working out a inscribed circle in the same nominal size as opposite side size of regular polygon and in tangency to regular polygon, finally obtaining comprehensive accuracy of machine tool according to symmetry situation and tangency situation of inscribed circle to regular polygon.

Description

1. Technical field [0001] The invention relates to a method for inspecting the comprehensive accuracy of machine tools, in particular to an inscribed circle inspection method for the comprehensive accuracy of numerically controlled machine tools. 2. Background technology [0002] At present, in the machinery and equipment manufacturing industry, CNC machine tools are usually the last key equipment of the processing technology. In order to ensure high-quality machined parts, quite strict requirements are put forward for the manufacturing accuracy of the CNC machine tool itself. In the factory inspection or user acceptance inspection of the three-axis to five-axis CNC boring and milling machine manufacturing factory, the usual inspection methods are as follows: [0003] 1. Geometric accuracy inspection, including checking the positioning accuracy, repeat positioning accuracy and interpolation accuracy of the machine tool by using step gauge, laser interferometer and ball sens...

Claims

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Application Information

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IPC IPC(8): G01M99/00
Inventor 陆启建
Owner NANJING HIGH SPEED TRANSMISSION SK NUMERICAL CONTROL EQUIP
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