Method for measuring error of roller roundness and kinematic error of machine tool main axle using antipodal two points six positions

A technology of roundness error and motion error, which is used in the field of measuring roll roundness error and machine tool spindle motion error at two points and six positions on the diameter

Inactive Publication Date: 2007-09-12
CHANGSHU INSTITUTE OF TECHNOLOGY
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  • Summary
  • Abstract
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Problems solved by technology

These traditional roll measurement devices do not have the function of separating the machine tool system error from the roundness error of the roll

Method used

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  • Method for measuring error of roller roundness and kinematic error of machine tool main axle using antipodal two points six positions
  • Method for measuring error of roller roundness and kinematic error of machine tool main axle using antipodal two points six positions

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Embodiment Construction

[0077] The specific implementation of the present invention is described in detail as follows in conjunction with accompanying drawing:

[0078] As shown in FIG. 1 , ball screw pairs 5 and 2 are driven by servo motors 3 and 4 , so that the two sensor measuring heads 7 and 10 installed on measuring arms 6 and 11 are located on the center line of roll 8 . During the measurement process, the roll measurement is rotated three times with reference to the starting point A, and the two sensors obtain the measurement series values ​​of six positions in total, and the roll rotation must be accurately graduated. The rotation angle of the roll relative to the measurement reference starting point A is shown in Table 1, and the roll speed is shown in Table 2.

[0079] Symbol Description:

[0080] N: The weekly sampling points of the measurement sensor;

[0081] the y k (n): the output of the sensor at the nth point during the Kth measurement;

[0082] r(n): is the roundness error of th...

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Abstract

The invention relates to a method about diametrical two points and six level measuring roll roundness error and machine tool spindle error., it makes the analysis when time-finite signal collected by two displacement sensors which are set according to diametrical method during six different displacement measuring changes into frequency domain, it makes separation of roundness error of roll which makes eccentric rotatoexercise and spindle motion error, and it realizes measures online about roundness error of roll and spindle motion error, thus, it improves the precision of measuring.

Description

technical field [0001] The invention relates to a method for measuring the roundness error of a roll and the movement error of a machine tool spindle at two points and six positions on the diameter. It is based on the two displacement sensors set on the opposite diameter, through the three-time indexing of the roll and the relative movement with the roll surface at six different measurement positions, to obtain redundant information on the surface of a certain section of the roll, and to establish a six-digit roundness error separation equation, And the time domain signal collected in the redundant information is transformed into the frequency domain for analysis, and the roundness error of the eccentrically rotating roll and the motion error of the main shaft are separated on the machine to realize the roundness error of the roll and the main shaft motion error On-machine measurement can improve measurement accuracy. Background technique [0002] With the rapid development...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01B7/287G01B7/31
Inventor 闫利文王小静
Owner CHANGSHU INSTITUTE OF TECHNOLOGY
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