High-precision withdrawal and straightening machine roller zero calibration device and method

Abstract

The invention discloses a high-precision withdrawal and straightening machine roller zero calibration device and method, and the device comprises a main spirit level, a main spirit level and upper roller surface contact precise adjustment mechanism, a level, and a connecting rod. A horizontal rod of the connecting rod is detachably connected with the left end of the main spirit level, and the lower end of a vertical rod of the connecting rod is connected to a bearing seat of a lower roller through an adjustable mechanism, wherein the level is placed on the main spirit level. The method comprises the steps: connecting and fixing the connecting rod and a screw rod; pre-tightening and fixing the main spirit level and the connecting level; precisely adjusting the main spirit level to be horizontal; taking away the level, and enabling the lower roller to slowly rise till a top cover on the main spirit level of the device to contact with the surface of an upper roller, and then stopping the lower roller; observing the rising scale of a water column, reading a value and determining a final zero calibration value; calculating and obtaining the zero calibration data of a pair of rollers, and enabling the zero calibration data to be inputted into a computer. The device and method can achieve the quick, accurate and convenient zero calibration of a roller gap, prolongs the service life of a withdrawal and straightening machine roller, and improves the scale breading effect.

Description

technical field [0001] The invention relates to a cold rolling pickling auxiliary device, in particular to a roll zero calibration device and a zero calibration method. Background technique [0002] Before pickling, hot-rolled steel strips generally need to be scaled and straightened. On the one hand, the dense iron oxide layer on the surface of the strip is broken to facilitate subsequent pickling; on the other hand, the waste of hot-rolled mother plates is reduced shape, creating conditions for subsequent rolling. At present, the scale breaking and straightening method commonly used in pickling units is to use stretching and bending straightening machines, referred to as tensioning and straightening machines, which consist of bending rolls and straightening rolls, and the bending rolls are as follows: figure 1 As shown, it is composed of an upper work roll 21a and a lower work roll 21b. The surface of the working rolls of the tension leveling machine will be worn after a...

AI Technical Summary

Problems solved by technology

This zero calibration method is relatively common in rolling mills and other equipment. The key is that the roll surface must be in direct contact and have pressure sensing capabilities. The role of the car puller roll is mainly to bend, and the roll surfaces of the upper and lower rolls cannot be directly contacted. Yes, the roller body does not have pressure sensing capability, so this zero calibration method is also not suitable for the car puller

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