Calibration method for manipulator of cogging mill

Abstract

The invention relates to a calibration method for a manipulator of a cogging mill, and belongs to the technical field of steel rolling processes. According to the technical scheme, initial positions of the two ends of the manipulator are calibrated before cogging rolling; rolling is simulated to a certain rolling groove position to calibrate the positions of the two ends of the manipulator; and the steps are repeated, rolling is simulated again, and when it is confirmed that the actual position of the manipulator and the display value of a displacement sensor are smaller than 3 mm, rolling can be conducted. The method has the advantages that the target rolling reduction is larger than 70 mm, the actual state serves as the reference, position calibration of the manipulator is conducted before production of each shift, the operability is high, tools are easy to obtain, the investment is small, the precision is high, a baffle of the manipulator of the cogging mill is precisely calibrated, the rolling precision is improved, and the problem of rolling throwing caused by square separation is solved.

Description

technical field [0001] The invention relates to a method for calibrating a pushing bed of a blanking machine, and belongs to the technical field of steel rolling technology. Background technique [0002] From the blanking machine with a diameter of 750mm to the blanking machine with a diameter of 1350mm, in order to cooperate with the accurate alignment of the rolling groove when the billet is rolled in each pass, generally the front, rear or front will be equipped with a pusher, which is convenient for the billet to be rolled in each pass. Switch between pass types. According to the degree of automation in each production plant, the push bed has an automatic operation mode and a manual operation mode. In the reciprocating blanking machine, the baffle at the front end of the pusher is equivalent to the inlet guide of the continuous rolling unit. During the billet feeding process, the centerline of the opening of the two baffles is aligned with the centerline of the rolling ...

AI Technical Summary

Problems solved by technology

Since the mechanical movement of the push bed relies on the chain to drive the disc spring behind the baffle, there is friction between the mechanical movements, which causes the neutrality of the push bed to change in the early and late stages of calibration, which cannot be guaranteed to be consistent with the actual production state, and the measurement accuracy is poor.

Therefore, the existing calibration methods cannot guarantee the calibration accuracy and product quality

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