Preparation method of clearance-adjusting eccentric shaft for hot-rolled steel section flying shear cutting edge

Abstract

The invention discloses a preparation method of a clearance-adjusting eccentric shaft for a hot-rolled steel section flying shear cutting edge, which comprises steps as follows: an eccentric shaft, a matched adjusting disk, a connecting rod, connecting brackets and an end cover are processed, and the adjusting disk, the left connecting bracket and the front end of the eccentric shaft are connected together through bolt components; the second section of the eccentric shaft and the hole of the left connecting bracket form a hole fit, and the hole clearance ensures the eccentric shaft to normally rotate in the hole; the third section of the eccentric shaft is supported by two bearings in the stepped hole of the connecting rod; the end cover, the right connecting bracket and the back end of the eccentric shaft are connected together through bolt components; and an axially fixed spacer ring is respectively installed in the clearances between the left and right connecting brackets and the connecting rod, so that the two bearings are axially fixed, thereby implementing the preparation of the clearance-adjusting eccentric shaft for a hot-rolled steel section flying shear cutting edge. The invention is easy to implement, has the advantages of wide application range and the like, and can be used as a useful design complement for design of the flying shear crank-link mechanism.

Description

technical field [0001] The invention relates to the technical field of metallurgical hot-rolling technology, in particular to a method for preparing an eccentric shaft for adjusting the blade gap of a hot-rolled section steel flying shear. Background technique [0002] Flying shear is one of the important equipments in the steel rolling production line. It is arranged in front of the finishing rolling unit. It is used for cutting and breaking the head and tail of the rolled steel during hot rolling of section steel. The quality of its work performance directly affects the production efficiency of the rolling line and the quality of the product cut. With the development of continuous rolling mills, flying shears have been used more and more widely. [0003] The hot-rolled section steel flying shear generally adopts a crank rocker mechanism. Its main working principle is: the motor drives the pinion to rotate through the reducer, and the pinion is synchronously driven to rota...

AI Technical Summary

Problems solved by technology

During on-site installation, debuggers often observe and measure the coincidence and backlash of the upper and lower cutting blades by turning the crank, but it is difficult to achieve precise adjustment of the backlash of the cutting blades

Therefore, if the eccentricity design is unreasonable for the horizontal and vertical side clearance of the cutting edge, it is difficult to make up for it through on-site and machining methods

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