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Iegrated precision test method for numerically controlled machine tool

A technology of CNC machine tools and inspection methods, which is applied in the direction of program control, computer control, and general control systems, etc., can solve the problem of inaccurately judging the machining accuracy of CNC machine tools, machining surface finish, unstable parts quality, and insufficient satisfaction of requirements and other issues, to achieve the effect of accurately processing surface finish and improving market competitiveness

Inactive Publication Date: 2005-10-26
NANJING HIGH SPEED TRANSMISSION SK NUMERICAL CONTROL EQUIP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The above inspection methods each have a certain effect, but the final machining accuracy and surface finish of CNC machine tools are closely related to many links in the machine assembly process. None of the existing inspection methods can accurately judge the actual machining accuracy and machining accuracy of CNC machine tools. The ability of surface finish, such as the manufacturing accuracy and assembly accuracy of 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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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0022] A method for testing the comprehensive accuracy of a numerically controlled machine tool according to the present invention. During trial cutting, the spindle speed is greater than or equal to 10000 rpm, and the test material is first fixed on the machine tool; metal copper can be used as the test material, and the diameter of the material is 40mm; Then use a ball cutter to cut along the 45° direction of the X / Y axis, the stepping distance is 0.05m, the cutting feed rate is 1500mm / min, and the cutting amount of the tool is 0.05, to obtain a concave ball with steps; finally, according to the concave ball cutting The distribution of lines and chatter lines and the outline of the transition circle between the step plane and the concave ball obtain the comprehensive accuracy of the machine tool.

Embodiment 2

[0024] A method for testing the comprehensive precision of a numerically controlled machine tool according to the present invention. During trial cutting, the spindle speed is greater than or equal to 10000 rpm, and the test material is first fixed on the machine tool; metal copper can be used as the test material, and the diameter of the material is 100mm; Then use a ball cutter to cut along the X-axis direction, the stepping distance is 0.05m, the cutting feed rate is 1800mm / min, and the cutting amount of the tool is 0.1 to obtain a concave ball with steps; finally, according to the cutting lines and vibration lines in the concave ball The distribution of the step plane and the contour line of the transition circle of the concave ball get the comprehensive accuracy of the machine tool.

Embodiment 3

[0026] A method for testing the comprehensive accuracy of a numerically controlled machine tool according to the present invention. During trial cutting, the spindle speed is greater than or equal to 10000 rpm, and the test material is first fixed on the machine tool; metal copper can be used as the test material, and the diameter of the material is 200mm; Then use a ball cutter to cut along the Y-axis direction, the stepping distance is 0.05m, the cutting feed rate is 2000mm / min, and the cutting amount of the tool is 0.2 to obtain a concave ball with steps; finally, according to the cutting lines and vibration lines in the concave ball The distribution of the step plane and the contour line of the transition circle of the concave ball get the comprehensive accuracy of the machine tool.

[0027] In the present invention, in order to obtain the comprehensive precision of the machine tool more accurately and completely, according to the actual situation, the cutting methods in Em...

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Abstract

The invention discloses a simple and convenient, effective and practical method for checking the synthetic accuracy of a digital controlled machine tool, firstly cutting the testing material in a transverse cutting mode to manufacture a concave ball with steps, wherein as cutting, it can adopt three modes of cutting in the 45 deg. direction between X / Y axes, in the X-axis direction and in the Y-axis direction and also combine the threes modes for using; then obtaining the synthetic accuracy of the machine tool, according to the distribution of cutting lines and vibrating lines and the outline definition of step planes and transition circles. The method can accurately judge the actual processing accuracy and fineness of manufactured surface for the digital controlled machine tool, and has an extremely great value in the delivery inspection or acceptance inspection of the user for the digital controlled machine tool.

Description

1. Technical field [0001] The invention relates to a method for checking the comprehensive precision of machine tools, in particular to a method for checking the comprehensive precision 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 sensor; [0004] 2. Cut...

Claims

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Application Information

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IPC IPC(8): G05B19/401
Inventor 陆启建
Owner NANJING HIGH SPEED TRANSMISSION SK NUMERICAL CONTROL EQUIP
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