Position compensation device and method in annular rolled piece machining process

Abstract

The invention provides a position compensation device in the annular rolled piece machining process. The position compensation device uses laser to detect the size of an annular rolled piece in an on-line mode and comprises a laser scanning unit, a laser speckle imaging unit and a control unit. The laser scanning unit collects data of the annular rolled piece in the rolling process, the laser speckle imaging unit and the laser scanning unit are synchronous, and a speckle image is formed on the surface of the annular rolled piece; and the control unit controls the laser scanning unit and the laser speckle imaging unit, and the position compensation quantity of the annular rolled piece is calculated based on the data collected by the laser scanning unit and the speckle image formed by the laser speckle imaging unit. The invention further provides a position compensation method in the annular rolled piece machining process. According to the position compensation device and method in the annular rolled piece machining process, the size of the annular rolled piece which is subjected to grinding and expansion can be measured, the difference value of the radius change of the annular rolled piece can be compensated, and accordingly cross section restoration of the annular rolled piece can be achieved.

Description

technical field [0001] The invention relates to the detection field of the ring rolling piece production process, in particular to a position compensation device and a position compensation method in the ring rolling piece processing process. Background technique [0002] The on-line detection of ring rolling piece size is a very typical and important link in the ring rolling piece production process. During the forging process of the ring-rolled piece, the online measurement of the size of the ring-rolled piece can measure whether the ring-rolled piece meets the process requirements, thereby reducing the scrap rate, so the method of online detection of the ring-rolled piece size has attracted more and more attention at home and abroad and attention. [0003] The difficulty of on-line detection of the size of the ring-rolled piece mainly lies in the dynamics of the ring-rolled piece during the rolling process, the measured diameter of the ring-rolled piece increases with th...

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Problems solved by technology

[0004] Aiming at the problem of inaccurate and distorted on-line dimension detection during the processing of ring-rolled pieces, the present invention provides a method for o

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