SU1107941A1 - Device for roilling screw conveyer spirals - Google Patents

Abstract

A device for rolling spirals of screws, containing conic work rolls with intersecting axes of their rotation and mechanisms for adjusting the radial and angular movement of the rolls, characterized in that, in order to improve the quality of the spirals of the screws by adjusting the twist angle of the spiral, it is equipped with mechanisms for moving rolls one relative to the other in the direction perpendicular to their radial displacement, made in the form of screw mechanisms. 9

Description

one

The invention relates to the processing of metals by pressure and can be used to manufacture spirals of screws in various parts of the national economy.

A device for producing spirals of screws, comprising working shafts with parallel axes of their rotation and an axial adjustment mechanism for rolls C 13, is known.

The disadvantage of this device is that it is impossible to produce spirals with a large ratio of outer diameter to inner diameter.

A device for rolling spirals of augers is known, which contains horse work rolls with intersecting axis III of their rotation and mechanisms for adjusting the radial and angular movement of the C2D rolls.

A disadvantage of the known device is that this device does not provide the necessary adjustment of the pitch of the helix, which leads to insufficient quality of the products obtained.

The purpose of the invention is to improve the quality of the spirals of the augers by adjusting the twist angle of the spiral.

This goal is achieved by the fact that the device dp for rolling spirals of screws, containing conic work rolls with intersecting axes of their rotation and mechanisms for adjusting the radial and angular movement of the rolls, is equipped with mechanisms for moving the rolls one relative to the other in the direction their radial nepej- e.scheniyu, made in the form of vintor, ьх.mechanizmov.

The drawing depicts the device

general form.

I.

Working waps 1 with cantilevered conical forming surfaces are placed on supports 2 in housings 3 of shafts 1. Supports 4 are fixed on housings of 3 shafts, each of which with its cylindrical surface contacts the corresponding surface of sliders 5 placed in intermediate housings 6. Between sliders 5 and the outer casing 7 are wedge 8 with screws 9, the threaded ends of which are screwed into the strips 10. The shaft housings are suspended in intermediate housings

412

6 on the trunnions 11 with the possibility of rotation around the axes of the trunnions 11 and moving, not on them, parallel to the direction of supply of the workpiece. The intermediate bodies 6 are provided with guiding surfaces, for example grooves 12, in which the keys 13 are inserted, fixed on the outer body 7. In the lateral surfaces of the shaft bodies 3

the ends of the screws 14 abut, the upper of which are screwed into the threaded holes in the intermediate housings 6, and the lower ends into the threaded holes provided on the keys 13. In the lower

parts of the casing of the 3 shafts are provided with locking nuts 15, in which the screws 16 are screwed, and abutted into the intermediate housings 6 through the supports 17. Ints are located in the outer casing 7

18, screwed into the intermediate housings 6 and secured against axial movement by the slats 19.

The adjustment of the device for obtaining a spiral of a certain diameter and pitch and its operation is carried out as follows.

Rotation of the screws 16 rotates the housings 3 of the shafts 1 around the axes of the trunnions 11 relative to the intermediate housings 6, thereby changing the angle ot between the axes of the shafts 1. Screw the screws 14, after having unscrewed the corresponding screws

on the opposite side, move the housing 3 of the shaft 1 in opposite directions in the direction "parallel to the feed direction of the workpiece. In this case, the shaft bodies move on the trunnions 11 inside the intermediate cases 6. By rotating the screws 18, the intermediate bodies 6 together with the shaft bodies 3 arranged in them move towards each other so that the tapering forming surfaces of the shaft 1 follow each other. Then the previously screwed screws 14 are brought to the stop into the shaft bodies and locked with lock nuts. After that, by rotating the screws 9, lower the wedge 8 so that they fit tightly into the gaps between the outer case 7 and the sliders 5. Adjusting the device to the required

screw sizes finished. Then, the drive through the articulated shafts (not shown in the drawing) transfers the rotation to the shafts 1, between

3 .. 1107941.4

Which of the input device the use of the proposed mouth

(not shown in the drawing) is supplied as compared with the basic

stocking. Passing through the gap with an inter-object allows us to improve the quality of conical formers in a spiral helix and obtain

surfaces, the workpiece is formed by 5 spirals of screws with a large ratio

in a spiral of the screw. external diameter to internal.

Claims (1)

DEVICE FOR ROLLING AUGER SPIRALS, containing conical work rolls with intersecting axes of their rotation and mechanisms for adjusting radial and angular movement of the rolls, characterized in that, in order to improve the quality of the spirals of the screws by adjusting the twist angle of the spiral, it is equipped with mechanisms for moving the rolls one relative to the other in the direction perpendicular to their radial movement, made in the form of screw mechanisms. _ SU .. „1107941 1107941 2