Device and method for detecting dynamic accuracy of CNC machine tools

A technology of dynamic accuracy and detection method, used in measuring/indicating equipment, metal processing mechanical parts, metal processing equipment, etc., can solve the problems of unable to detect tool axis error at the same time, unable to fully reflect the machine tool error, etc., to increase the accuracy and Reliability, improve measurement efficiency, and simplify the effect of the measurement process

Active Publication Date: 2021-06-08
SHANGHAI JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

However, this solution can only measure the position information of one point of the tool tip, but cannot detect the error of the tool axis direction at the same time, and cannot fully reflect the error of the machine tool

Method used

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  • Device and method for detecting dynamic accuracy of CNC machine tools
  • Device and method for detecting dynamic accuracy of CNC machine tools

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Embodiment Construction

[0037] The present invention will be described in detail below in conjunction with specific embodiments. The following examples will help those skilled in the art to further understand the present invention, but do not limit the present invention in any form. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all belong to the protection scope of the present invention.

[0038] In the description of this application, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the application and simplifying the description, rather than indicating or implying the referred device Or elements must hav...

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Abstract

The invention provides a dynamic accuracy detection device and method for a numerically controlled machine tool, comprising a numerically controlled system, a machine tool spindle, a standard ball bat, a displacement sensor, a sensor bracket, fasteners and a base, the standard ball stick is connected to the machine tool spindle, and the sensor bracket passes through Fasteners are installed on the base, and the sensor bracket and the base are respectively equipped with displacement sensors through fasteners; the machine tool spindle is connected to the numerical control system; the standard ball bat includes two standard balls, and the The displacement sensor and the displacement sensor on the base collect the displacement data of the two standard spheres respectively. The invention solves the problem of precision calibration caused by separately measuring the position of the tool tip point and the direction of the tool axis by using multiple sensors to simultaneously measure the position of the tool tip point and the direction of the tool axis, and increases the accuracy and reliability of machine tool spindle detection.

Description

technical field [0001] The invention relates to the technical field of numerical control machine tools, in particular to a dynamic accuracy detection device and method for numerical control machine tools. Background technique [0002] The spindle rotation error analysis system detects the radial runout of the spindle, the axial movement of the spindle, the thermal deformation of the temperature rise, and the cutting rigidity error during the rotation of the spindle with eccentricity through 5 displacement sensors. The main advantages of the spindle rotation error analysis system are commercialization, high reliability, and convenient operation. However, the disadvantage of the spindle rotation error analysis system is that it can only analyze errors such as radial runout, axial movement, thermal deformation, etc., and the recognition range is small, so it cannot effectively identify the dynamic errors of the spindle, such as servo mismatch, nonlinear errors, clearance errors...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23Q17/22B23Q17/00
CPCB23Q17/00B23Q17/22
Inventor 毕庆贞许坤
Owner SHANGHAI JIAOTONG UNIV
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