Planetary web roll rotating hub type flattening machine

Abstract

The invention relates to a planetary inclined roll rotary hub straightening machine, comprising a rotary hub, a first power driving device for driving the rotary hub to rotate, at least two groups of straightening rollers arranged in the rotary hub and a second power driving device for driving the rotation of the straightening rollers. An upper straightening roller and a lower straightening roller of every group of the straightening rollers are symmetrically arranged at the two sides of a rotating axis and the straightening rollers are inclined in certain angle corresponding to the rotating axis. A structure combining the straightening rollers which can autorotate with the rotary hub which can implement revolution is adopted. Therefore, previous driven straightening rollers in the rotary hub are changed into driving straightening rollers. The rotating speeds of the rotary hub and the straightening rollers are matched to eliminate the puppet rotating phenomenon of straightened roundwood. The contact and the compression bending state of the straightening rollers and the straightened roundwood are improved, and the straightness is improved. The straightening rollers driven by a hydraulic motor clamp the straightened roundwood tightly and roll around the straightened roundwood to ensure the roundness. The planetary inclined roll rotary hub straightening machine is very beneficial to the straightening of super-long thin wall pipes.

Description

technical field [0001] The invention relates to a planetary skewed roller hub-type round material straightening equipment, in particular to a straightening machine for ultra-long thin-walled metal pipes. Background technique [0002] At present, the oblique roller hub-type round material straightening machines at home and abroad are basically composed of a hub equipped with multiple passive straightening rollers, front pinch rollers, and rear pinch rollers. There are certain limitations, especially when straightening thin-walled pipes, if the straightening force is applied too much, first the pipe will be flattened, and secondly, when the workpiece is subjected to a large straightening force in the hub When it works, it will inevitably produce a large rotational moment, which is difficult to eliminate by relying on the front and rear pinch rollers. Once the workpiece rotates during the straightening process, the straightening quality cannot be guaranteed, and the workpiece ...

AI Technical Summary

Problems solved by technology

[0002] At present, the oblique roller hub-type round material straightening machines at home and abroad are basically composed of a hub equipped with multiple passive straightening rollers, front pinch rollers, and rear pinch rollers. There are certain limitations, especially when straightening thin-walled pipes, if the straightening force is applied too much, first the pipe will be flattened, and secondly, when the workpiece is subjected to a large straightening force in the hub When it works, it will inevitably produce a large rotational moment, which is difficult to eliminate by relying on the front and rear pinch rollers. Once the workpiece rotates during the straightening process, the straightening quality cannot be guaranteed, and the workpiece The tail flick caused by the rotation is very dangerous during the operation

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