SU927420A1 - Apparatus for cutting tubes - Google Patents

Description

(50 DEVICE FOR CUTTING PIPES

I

The invention relates to the processing of metals by pressure and can be used for the manufacture of dimensional billets.

A device for cutting pipes is known, comprising a punch attached to the upper deck; plate, and the matrix mounted on a fixed bottom plate tl.

The disadvantage of the device is the impossibility of obtaining blanks with the finished face, which requires an additional operation: chamfering.

The purpose of the invention is to expand the technological capabilities of the device by allowing simultaneous operations to cut the workpiece and chamfer from one of its ends.

To this end, a device for cutting pipes, containing a punch mounted on the upper movable plate and the matrix mounted on the fixed

the bottom plate is equipped with a clamping chuck with a cutting tool mounted on the bottom plate with the possibility of reciprocating movement and rotation from the upper sub-. sliding plate through an intermediate mechanism.

FIG. 1 shows a device, section B-B in FIG. 2; in fig. 2 is a section A-A in FIG. one; in fig. 3 kind

10B in FIG. one..

The device contains the upper movable plate 1 and the lower fixed plate 2. On the upper plate is fixed a punch 3 spear-shaped, wedge C

15 and a gear rack 5. On the bottom plate there is mounted a matrix consisting of a fixed 6 and a movable 7 blocks, case 8. In the case there is a drive shaft 9, at the end of which,

20 opposite to the pipe feed direction

10, through a spline connection

Claims (1)

11, a clamping chuck 12 is fitted, equipped with a cutting tool 13. At the second end of the drive shaft, gear 1 is installed, which engages with the toothed rack 5 The clamping cartridge has a curved groove 15 and the drive shaft is an annular groove 1b. Screws 17 mounted in housing 8 limit movement of the chuck and drive shaft. Nuts 18 counter screws. The movable block 7 of the matrix has a return mechanism consisting of a bolt 19 and a spring 20. The device operates as follows. The pipe 10 is fed into the device until it stops. When lowering the top plate 1, the wedge interacts with the movable block 7 of the matrix, moves it to the stationary 6 and clamps the pipe 10. With further lowering of the plate 1, the punch 3 cuts off the dimensional workpiece, simultaneously with the pipe clamp 10 of the rack bar 5 through gear 14, rotates the drive shaft 9 and the clamping chuck 12 connected to it by means of the splines 11 together with the cutting tool 13. The axial movement of the cutting tool provides a pair of curved groove 15 and screw 17. Thus, the work piece and chamfering are performed simultaneously menno. During the reverse course of the upper plate, the cutting tool is retracted, and under Tl, the movable block of the matrix returns to its original position using a return mechanism. The use of the proposed device in comparison with the known provides for obtaining from the pipe blanks of measured length with a chamfer on one side of it in one stroke of the press. An invention of a pipe cutting apparatus comprising a punch fixed on an upper movable plate and a matrix mounted on a fixed lower plate, characterized in that, in order to expand technological capabilities by ensuring simultaneous operations on cutting a piece and chamfering from one its end, it is provided with a clamping chuck with a cutting tool mounted on the lower Plate with the possibility of reciprocating movement and rotation from the upper movable plate by KSR mechanism. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 516482, cl. In 23 D 21/00, 05.Ab.76 (prototype).