Ultra-thin strap combined forming rolling mill with different speed ratios capable of being adjusted online and continuously

Abstract

Disclosed is an ultra-thin strap combined forming rolling mill with the different speed ratios capable of being adjusted online and continuously. The ultra-thin strap combined forming rolling mill comprises a rolling mill master control part and a rolling mill mechanical part. A rolling mill control system human-computer interface is arranged in a master control computer. Input fields and output fields for speed setting of an upper working roller and a lower working roller, and an input field and an output field for adjustment step size setting of the different speed ratios are arranged on the human-computer interface. The master control computer is connected with an operation platform through a programmable logic controller (PLC). A rolling forward starting switch, a rolling backward starting switch and a different speed ratio adjusting switch are arranged on the operation platform. The different speed ratios can be increased or decreased by a different speed ratio adjustment step size online through the different speed ratio adjusting switch. When asymmetrical rolling of an ultra-thin strap is conducted through the ultra-thin strap combined forming rolling mill, the different speed ratios can be arranged to be infinitely variable and can be set to be an arbitrary value in theory. Due to the fact that the limit of the minimum rolling thickness of the synchronous rolling is overcome by the asymmetrical rolling and the thinness rolling capacity is stronger, the selection range of the diameter of the working rollers of the ultra-thin strap combined forming rolling mill can be broadened, accordingly, the occurrence of torsional vibration phenomena of the rollers is effectively reduced, and the surface quality of the ultra-thin strap is improved.

Description

technical field [0001] The invention belongs to the technical field of ultra-thin strip rolling, and in particular relates to an ultra-thin strip combination forming rolling mill whose different speed ratio can be continuously adjusted on-line. Background technique [0002] In recent years, with the rapid development of micro-manufacturing technology and micro-forming technology, the demand for ultra-thin strips of metals, alloys and metal matrix composites is increasing. These ultra-thin strips are widely used in the microelectronics industry, micro-manufacturing industry, and instrumentation industry and micro-electromechanical industries. [0003] The ultra-thin strips of metals, alloys and metal-based composite materials are mostly obtained by rolling, and the rolling mills used are mostly multi-roll synchronous rolling mills, and the structure of multi-roll synchronous rolling mills is relatively complicated, and its purchase, operation and maintenance costs are relativ...

AI Technical Summary

Problems solved by technology

[0003] The ultra-thin strips of metals, alloys and metal-based composite materials are mostly obtained by rolling, and the rolling mills used are mostly multi-roll synchronous rolling mills, and the structure of multi-roll synchronous rolling mills is relatively complicated, and its purchase, operation and maintenance costs are relatively high. The diameter of the working roll of the synchronous rolling mill is small, and the production efficiency is low, and the torsional vibration of the roll is prone to occur, which will cause vibration defects on the surface of the ultra-thin strip and affect the product quality

[0004] When the gear-driven asynchronous rolling mill is used to produce extremely thin strips, since the different speed ratio is controlled by the gear ratio of the transmission gear, the adjustment of the different speed ratio is not flexible enough, and the online adjustment of the different speed ratio cannot be realized, starting and stopping It is easy to break the belt sometimes, and there are often plate shape defects caused by improper setting of the different speed ratio.

In traditional asynchronous rolling, the roll speed of the upper and lower work rolls cannot be alternated on-line, and the different stresses on the upper and lower surfaces of the rolled piece will also cause the rolled piece to curl in one direction, resulting in shape defects

The asynchronous rolling mill with independent transmission on both sides uses a universal joint shaft, the transmission line is long, the rigidity is poor, and the torsional vibration of the roll is more likely to occur, which will affect the product quality.

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