SU1754279A1 - Metal spinning machine - Google Patents

Abstract

Use: metal forming. SUMMARY OF THE INVENTION: The device comprises a housing, an inlet and an outlet support cone, pressure rollers mounted in a separator, a micrometer nut, a mechanism for adjusting the relative position of the support cones. In addition, the device is equipped with springs, each of which is mounted in the separator under the respective supporting axis of each squeezing roller. The mechanism for adjusting the relative position of the support cones is made in the form of a bearing assembly mounted on the end surfaces of the micrometer nut, a cap mounted on the end surface of the micrometer nut on the input side of the device, and a sleeve mounted on the input side of the device with the possibility of interaction with the cover and the support cone. 1 il.

Description

The invention relates to a tool for the main technological equipment for rotary extrusion.

A device for rotary extrusion is known, comprising a housing, a micrometer nut, support rings, thrust bearings, rollers and a spacer.

The disadvantage of this device is the difficulty in the manufacture of support rings containing Holes and threads for the spacer, as well as the presence of annular grooves for the axles of the rollers.

Closest to the present invention is a device comprising two coaxially annular support cones installed in the housing cavity with the possibility of rotation around their axis, pressure elements located between the support cones in the separator, and the adjustment mechanism

the mutual axial position of the support cones.

The disadvantage of this device also lies in the complexity of the design of the support cones, which wear out and are often interchangeable. In addition, the presence of openings for the spacer entails an increase in the diameter and mass of the support cones, degrading the design. In the inoperative position, with the diluted support cones, the pressing rollers located above, under the action of their own weight, are in contact with the rolled product. When removing the product from the roll head, these rollers leave a longitudinal scratch on its surface. Scratches are easily formed on the surface of ductile materials, such as aluminum alloys, which is especially unacceptable with high demands on the surface quality of the product.

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The purpose of the invention is to improve the quality of products and simplify the design of the head

The goal is achieved by the device for rotational extrusion, comprising a housing, inlet and outlet support cones, pressure rollers mounted in the separator, a micrometer nut and a mechanism for adjusting the relative position of the support cones, each of which is mounted in the separator under the respective axis each squeezing roller, the mechanism for adjusting the relative position of the support cones is made in the form of a bearing assembly mounted on the end surfaces of micrometric nuts, cover mounted on the end surface of the nut with micrometric input side of the device and hydrochloric vypolnen- an annular groove of the bearing of the bearing assembly and bushing mounted to the front side of the apparatus to cooperate with the lid and its side surface Onutren- input reference cone

The drawing shows a diagram of a device for rotary extrusion

The device comprises a housing 1 with inlet 2 and outlet 3 supporting cones in it, on which the pressure rollers 4 placed in separator 5 supported by springs b placed in support separators 5 and 3 and located in separator 5 are located. the sleeve 7 through the bearings 8 and 9 krshzhy 10 pressed to the micrometer nut 11

The device for rotational extrusion works as follows.

The workpiece 12 is put on the mandrel 13. From the rotation of the micrometer nut 11, a toothed rack driven by a hydraulic cylinder (not shown) through the bearing 9 moves the input support cone 2, which acts on the pressure rollers 4, reducing the clearance between them. The rollers are pressed to the support cones 2 and 3 When turning on rotation

of the mandrel 13 and the drive for moving the rolling head from right to left, the rolling process takes place. After moving the rolling head for the length of the rolled part of the workpiece 12, the rotation of the mandrel 13 is turned off and the drive of the rolling head moves. From activating the return stroke of the hydraulic cylinder by means of a toothed rack, the micrometer nut 11 rotates, which acts on the bearing 8, the cover 10, the clamping sleeve 7 and moves the input support cone 2. Under the action of the springs 6 supported on the separator 5, the rollers 4 are pressed out from the surface of the rolled blank 12, the spreading device is moved to the right to its original position, and the rolled blank 12 is removed from the mandrel 13.

Thus, the use of the proposed device for rotary extrusion allows to simplify the design of the roll head and improve the quality of the processed products.

Claims (1)

Apparatus for rotational extrusion, comprising a housing, inlet and outlet support cones, pressure rollers, mounted in a separator, a micrometer nut and a mechanism for adjusting the relative position of support cones, in order to improve the quality of products and simplify the design, it is equipped with springs , each of which is mounted in the separator under the corresponding axis of each squeezing roller, the mechanism for adjusting the relative position of the support cones is designed as a bearing a unit mounted on the end surfaces of the micrometer nut, a cap mounted on the end surface of the micrometer nut on the inlet side of the device and made with an annular groove for the bearing of the bearing unit, and a sleeve mounted on the inlet side of the device with the possibility of interaction with the cap and the inner side surface input support cone 6