SU1489885A1 - Apparatus for making helically profiled pipes - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to the production of spiral-shaped pipes. The purpose of the invention is the expansion of technological capabilities through the manufacture of spiral-shaped pipes with an arbitrary pitch of corrugations. The device includes a spindle, forming rollers and roller holders. The spindle has cylindrical grooves with sliding bearings. The bearings are fitted with bushings with rectangular holes. Each roller holder is made with a flange and is placed in the rectangular hole of the sleeve with the possibility of radial movement. Compression springs are installed between the flanges of the roller holders and bushings. The roller holders with the forming rollers are installed with the possibility of changing their angular position relative to the feed axis of the billet. The roller holders are self-aligning with respect to the feed axis, depending on the feed rate and the angular speed of the spindle. 2 Il.

Description

The invention relates to the processing of metals by pressure, in particular to the production of spiral-shaped pipes.

 The purpose of the invention is the expansion of technological capabilities through the manufacture of spiral-shaped pipes with an arbitrary pitch of corrugations.

Figure 1 shows a device dp for producing spiral-shaped pipes; FIG. 2 is a section A — A in FIG. one.

A device for producing spiral shaped tubes comprises a stationary body I, a drive pulley 2,

spindle 3 with cylindrical radially spaced grooves 4 and forming rollers 5. Spindle 3 is mounted in drive pulley 2 with the possibility of axial movement by means of a pneumatic cylinder 6 housed in a housing. In the cylindrical grooves 4 of the spindle, the sliding bearings 7 are fixedly mounted, in which the sleeves 8 with rectangular holes 9- are mounted so as to freely rotate. In rectangular holes 9, BLOCK 8 is placed with the possibility of radial movement and change of their angular position relative to the feed axis of the billet 10 PO4 00 00

sd

31489885

liquid holders 11, each of which: Obtaining spiral-profiled made with flange 12; Molded pipes with arbitrary pitch of corrugations

rollers 5 are installed in the roller bearing - in a wide range of profile dimensions

L x 11 in the rolling bearings 13, between the flanges 12 of the roller holders 11 and the sleeves 8, compression springs 14 are placed. In the drive pulley 2, mechanisms 15 are installed for the radial movement of the roller holders 11,

The device works as follows | at once.

Pipe blank 10 is fed to the device. The drive pulley 2 s significantly increases the performance characteristics of finished products.

Claims (1)

Invention Formula A device for producing spiral profiled pipes from billets, comprising a spindle with cylindrical radially positioned spindles 3 rotated in it, 15 slots, forming rollers and rollers with constant angular velocity. Compressors with compression springs, mounted Pneumatic cylinder 6 displaces spindle 3 in the corresponding slot groove in the axial direction, while the mechanism 15 moves the roller holders cases with the possibility of radial movement and changing their angular position with the forming rollers 5 in radially relative to the feed axis of the pipe direction. The rollers 5 are inserted into the tubular billet 10 and the corrugation is molded. At the time of introducing the rollers 5, their angular position relative to the axis of the billet feed takes place. The change in the angular position of the forming rollers 5 occurs due to a change in the ratio of the feed speed of the billet and the angular speed of rotation of the drive pulley 2, To obtain smooth sections on the profiled tubes, the spindle 3 is moved axially and the shaping rollers are removed from the contact with the workpiece, moving the roller holders 11 in the radial direction by means of compression springs 14, 11 15 lit it 2 significantly improves the performance of finished products. Invention Formula leaking in the corresponding slot groove cases with the possibility of radial movement and change of their angular half of the workpiece, differing from the fact that, with the aim of expanding technological capabilities by ensuring the manufacture of pipes with arbitrary corrugation pitch, it is equipped with slide bearings that are stationary in the corresponding cylindrical grooves of the spindle, and bushings with rectangular holes mounted in bearings with the possibility of free rotation, and each roller holder is made with a flange and is placed in a rectangular opening of the corresponding sleeve with radial movement, with each compression spring being placed between the flange of the roller holder and the sleeve, Editor I.Rybchenko Compiled by D. Shitikov Tehred A. Kravchuk Order 3614/15 Circulation 693 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 Production and Publishing Combine Patent, Uzhgorod, st. Gagarin, 101 // Figg Corrector T, Kolb Subscription