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Method for measuring geometric error parameter value of rotary oscillation axis of five-axis linkage numerical control machine tool

A CNC machine tool, rotary swing technology, used in measuring/indicating equipment, metal processing mechanical parts, metal processing equipment, etc., can solve problems such as lack of geometric error parameters

Active Publication Date: 2011-04-06
成都天佑创软科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0010] It can be seen from the state of the art that due to the limitations of the method itself and the measuring equipment, there is a lack of a method that can comprehensively detect all twelve geometric error parameters of the rotary swing axis of a five-axis linkage CNC machine tool

Method used

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  • Method for measuring geometric error parameter value of rotary oscillation axis of five-axis linkage numerical control machine tool
  • Method for measuring geometric error parameter value of rotary oscillation axis of five-axis linkage numerical control machine tool
  • Method for measuring geometric error parameter value of rotary oscillation axis of five-axis linkage numerical control machine tool

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Experimental program
Comparison scheme
Effect test

Embodiment

[0117] Taking the swing axis of workbench A of an A'C' type five-axis high-speed machining center as an example, the error test experiment was carried out ( Image 6 shown), the implementation steps are as follows:

[0118] (1) Install the ballbar and measuring accessories;

[0119] (2) Prepare the measurement program, the test range is -32°~32° on the A axis, keep the C axis at 0°, and stop for 10 seconds to read every 3°;

[0120] (3) Measurement mode 1:

[0121] Pick = =80mm, = =55.694mm, the length of the ballbar is 101.5mm, measure in the X, Y, and Z directions respectively, and record the change of the length of the ballbar , , ;

[0122] (4) Measurement mode 2:

[0123] Pick = =160mm, = =55.694mm, the same as step (3), measure the displacement error in the X, Y, and Z directions again , , ;

[0124] (5) Measurement mode three:

[0125] Pick = =160mm, = =155.694mm, measure the displacement error in the X, Y, and Z directions again...

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Abstract

The invention discloses a method for measuring a geometric error parameter value of a rotary oscillation axis of a five-axis linkage numerical control machine tool. The method comprises the following steps of: measuring displacement errors of X, Y and Z directions on at least three positions under different rotating angles of the rotary oscillation axis respectively by using a ballbar, wherein translation axis linkage coordinates provided by a revolving tool central point (RTCP) cutter central point movement control function of a five-axis machine tool serve as measurement datum; and performing data processing according to the displacement errors to identify and calculate the geometric error of each rotating angle of the rotary oscillation axis. The rotary oscillation axis is measured independently by the method, so the geometric error value of the five-axis linkage numerical control machine tools of various structures at each rotary oscillation angles can be obtained. The method is not limited by the structures of the machine tools, is convenient to arrange and has high measuring precision.

Description

technical field [0001] The invention belongs to the numerical control system technology, in particular to the technical field of geometric error testing of five-axis linkage numerical control processing machine tools. Background technique [0002] Because the five-axis linkage machine tool has the advantages of better surface adaptability, fewer clamping times and fixtures, and higher material removal rate in processing parts with complex surfaces. Therefore, five-axis linkage CNC machine tools are widely used in the processing of turbines, propeller blades and complex aircraft structural parts. [0003] The modern manufacturing industry has higher and higher requirements for the machining accuracy of parts, so the accuracy requirements for CNC machine tools are also higher and higher. Since the five-axis linkage CNC machine tool adds two rotary swing axes, compared with the three-axis linkage machine tool, its rigidity is reduced, and its geometric accuracy is also reduced...

Claims

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Application Information

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IPC IPC(8): B23Q17/00
Inventor 丁国富马术文江磊朱绍维黎荣
Owner 成都天佑创软科技有限公司
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