Alternating-current direct-drive servo device for main transmission and two-roller radial spacing adjustment

Abstract

Disclosed is an alternating-current direct-drive servo device for main transmission and two-roller radial spacing adjustment. A roller radial spacing adjustment device of the servo device comprises a bilaterally symmetric radial adjusting mechanism. An alternating-current servo motor of the mechanism is connected with a lead screw through a speed reducer and the like, a nut is mounted on the lead screw, a left main drive alternating-current servo motor on the upper portion of a main transmission device is connected with an upper roller shaft mounted on the nut, an upper mould is mounted on the upper roller shaft, a right main drive alternating-current servo motor on the lower portion of the main transmission device is connected with a lower roller shaft mounted on a base, a lower mould is mounted on the lower roller shaft, the alternating-current servo motors are controlled to rotate and to drive the upper roller shaft to move, the upper mould is further driven to move, the distance between the upper roller shaft and the lower roller shaft is adjusted, the left main drive alternating-current servo motor and the right left main drive alternating-current servo motor are controlled to drive the upper roller shaft and the lower roller shaft to rotate, and the upper mould and the lower mould are matched with each other so that a workpiece is processed. The alternating-current direct-drive servo device has the advantages of high efficiency, high precision and the like, and is convenient in operation and easy in use.

Description

technical field [0001] The invention belongs to the technical field of forming equipment for cross wedge rolling mills and rolling mills, and particularly relates to an AC direct drive servo device for adjusting the radial distance between the main drive and two rolls. Background technique [0002] Cross wedge rolling refers to the continuous local deformation of the cylindrical billet between the dies of two rollers or between two flat dies, and the shape of the rolled part is consistent with the shape of the groove at the bottom of the die. Compared with the traditional forging or cutting process, the cross wedge rolling process has the following advantages: (1) High production efficiency, usually 5-20 times that of other processes. (2) The material utilization rate is high. Usually, about 40% of the material is wasted in the form of chips in traditional machining, while only less than 10% of the material is wasted in the cross wedge rolling process. (3) The product quali...

AI Technical Summary

Problems solved by technology

[0003] The main transmission system of the traditional cross wedge mill and rolling mill is that the AC asynchronous motor is decelerated by the planetary gear reducer, and then the power is transmitted to the roll shaft through the universal joint shaft to drive the roll shaft to rotate; the radial distance of the roll shaft is Adjustment, mainly through manual adjustment; at the same time, the roll forming force is large, the mold wear is serious, and the surface quality of the workpiece is low

In modern actual production, it is often necessary to adjust the speed of the roll shaft according to different product and performance requirements, while the speed of the traditional cross wedge rolling mill is fixed and difficult to adjust, which requires redesign of the equipment. It is time-consuming, labor-intensive, and extremely inconvenient; at the same time, the adjustment of the radial position of the roll shaft in traditional equipment is mainly through manual adjustment. During the adjustment process, the distance between the roll shafts must be continuously measured, which is not only low in efficiency, but also inaccurate. High, it is difficult to adapt to the current requirements of high production efficiency and high precision products

With the development of society, the requirements for product surface quality are getting higher and higher, and the price of frequent mold replacement is high, which is not conducive to the competition of enterprises in the market

Images