SU808173A1 - Rolling roll - Google Patents

Description

I

The invention relates to the processing of metals by pressure, relates to rolls of rolling mills, and can be used in production plants of metallurgical and machine-building plants.

A well-known design of a plow roll, which, contains a shaft with a shank, inserts located between the band and the shaft surface, which is in the transverse section

it is outlined by segments of curves of the second in a row, passing into trimming radial straight lines l.

Also known mill roll,

which includes a barrel, an axial channel with a t2 pusher placed in it.

The main disadvantage of the known rolls is the lack of a mechanism that ensures the rotation of the workers with a variable angular speed.

The purpose of the invention is to provide the possibility of rotation of the shaft with variable angular velocity.

The goal is achieved by the fact that the mill roll contains a shaft with a smooth barrel and an axial channel, a pusher located in the shaft channel and provided with shoulders made along a helical line with a variable angle of elevation and mutually interacting with the grooves of the sleeve rigidly fixed in the shaft bore coaxial to it, and the angle of elevation burt helix is greater than the friction angle of the interacting surfaces of the pusher and sleeve.

In addition, the roller is provided with a return drum mounted coaxially in the shaft channel and interacting with the pusher.

FIG. 1 schematically shows a swath; in fig. 2 shows section A-A in FIG. one .

The mill roll contains a shaft 1 with a smooth barrel of constant radius, which rests with its necks on the supports 2 installed in the bores of the cushions 3. Shaft 1 has an axial channel, pusher 4 is located, containing pins 5, made on a screw lash with a variable angle of elevation. The pusher 4 with its screw clamps interacts with the grooves of the sleeve. 6 installed in the bore coaxially pusher. In the axial channel of the suspension 1, there is a return spring 7, which interacts with the pusher 4. The follower 4 can be connected, for example, by means of a reciprocating mechanism with the main guide stand of the working stand. For example, rolling profiles of variable cross section in a four-roll caliber with all drive rolls, when a pair of horizontal rolls deforms the workpiece with variable compression, and a pair of vertical rolls fflvieeT smooth barrel and eformiruet workpiece with constant compression. With an increase in the compression of the workpiece by horizontal rollers, the peripheral speeds of the horizontal and vertical rolls are misaligned, which leads to overfilling or non-filling of the caliber and, accordingly, to a decrease in the quality of rolled PHYPE and deviation from the required geometrical dimensions. The rotation of the mill roll with a variable angular velocity is carried out as follows. When moving the pusher 4 along the roll axis, (for example, using reciprocating mehiaHB3Ma), the shoulders 5 act on the grooves of the sleeve 6 and, by varying the elevation angle of the helix, provide a change in the angular velocity of the shaft 1 at a constant speed of the pusher. The return position is returned to the starting position by the spring, spring 7, and the cycle is repeated. The proposed mill roll can be rotated in a four-roll caliber stand, where the rotation of a pair of horizontal working rolls is carried out from the main drive using a pindel, and the variable angular speed of a pair of vertical shafts is rotated by axial movement of the rollers connected to the main drive with reciprocating mechanism. In addition, the proposed roll can be used in a cage with a multi-roll kaibrom for spinning the idle rolls about the speed of rotation of the drive rolls. The invention makes it possible to increase the quality and yield of npir production not only of variable cross-section profiles, but also of ordinary varietal profiles. Formula 1. Rolling roll comprising a shaft with a smooth barrel and an axial channel, a pusher located in the shaft channel, characterized in that, in order to enable rotation of the shaft with variable angular speed, the pusher is provided with shoulders made along a helical line, with a variable angle of elevation and interacting with the grooves of the sleeve rigidly fixed in the bore of the shaft on the follower, wherein the lead angle of the helix angle turners Large Live interacting friction surfaces of the pusher and sleeve. 2. Rollers according to claim 1, of which is provided with a return spring mounted coaxially in the channel of the shaft and interacting with the pusher. Sources of information taken into account in the examination 1. Authors. USSR certificate № 582856, cl. B 21 B 27/02, 1976. 2. USSR author's certificate No. 307824, cl. B 21 B 27/02, 1970.

Claims (2)

Claim 1. A rolling roll, comprising a shaft with a smooth barrel and an axial channel, a pusher located in the channel of the shaft, characterized in that, in order to enable rotation of the shaft with a variable angular velocity, the pusher is provided with collars made along a helical line with a variable angle of elevation and interacting with the grooves of the sleeve, rigidly fixed in the bore of the shaft coaxially to the pusher, and the angle of elevation of the helical line of the shoulders is greater than the angle of friction of the interacting surfaces of the pusher and the sleeve. 2. Roll on π. 1, with the fact that it is equipped with a return spring mounted coaxially in the channel of the shaft and interacting with the pusher.