SU1227377A1 - Die for cutting pipes - Google Patents

Description

The invention relates to the processing of metals by pressure and can be used in mechanical engineering for cutting pipes into dimensional workpieces.

The purpose of the invention is to increase the productivity and improve the quality of cutting by providing simultaneous cuttings of two 3 pieces and changing the direction of the cutting force.

FIG. 1 shows a stamp, a general view; in fig. 2 is a section A-A in FIG. one.

The pipe cutting punch contains a housing 2 installed on the base 1, in which fixed stub blades 5 and 6 are fixed with the help of slats 3 and 4. The base 7 is also fixed on the base. The stamp also includes a movable plate 8 on which a wedge 9 is attached, having a protrusion 10. Between the fixed stub blades 5 and 6, a movable stub knife 12 is mounted in the holder 11. The holder 1G has the possibility of mixing in two mutually perpendicular directions with the aid of buffers 13 and 14.

The stamp also includes a composite mandrel made of fixed 15 and a movable 16 parts. A spring-loaded spring 17 is fastened on the lead-in part of the mandrel. In the movable part 16 of the mandrel, an opening 18 is made through which the pin 19 passes, fixed in the fixed parts of the mandrel.

five

Q

five

For removing the blanks, a puller 20 is provided, having a cylindrical part 21 and a collar 22.

The puller is moved by a ram (not shown).

The stamp for cutting pipes works as follows.

In the adjustment mode on the puller, two pre-cut blanks 23 are installed, after which the puller is set to the extreme left position.

The pipe 24 is fed into the stamp until it stops at the workpieces 23. Then a press is turned on, the slide of which moves the movable plate 8 with the wedge 9. The wedge moves the holder 11, the movable stub knife 12 and the movable mandrel 16 in the horizontal direction, thereby cutting the pipe in this direction . Upon further movement of the wedge 9, its protrusion 10 presses against the sleeve 11, and the pipe is finally cut in the vertical direction.

After the parts of the punch have returned to their original position, the puller 20 moves to the right, while the cut blanks 23 interact with the stop 7, are removed from the cylindrical part 21 of the puller 20. After that, the puller moves again to the left position and the pipe with the cut blanks is moved all the way to the shoulder 22 puller.

Then the cycle repeats.

 Rig. 2

Compiled by V. Morozov

Editor E. KopchaTehred I. VeresKorrektor And Obruchar

Order 1991/13 Circulation 1001Subscription

VNIIPI USSR State Committee

for inventions and discoveries

113035, Moscow, Zh-35, Raushsk nab. 4/5

Fi.pial PPP "Patent, Uzhgorod, st. Project, 4

Claims (1)

A STAMP FOR PIPE CUTTING, comprising a fixed sleeve knife mounted on the base, a composite mandrel with a lead-in for introducing it into the pipe, a movable sleeve knife mounted in a clip, a movable plate mounted to interact with the clip, a stop and a puller, characterized in that, in order to increase productivity and improve the quality of the obtained blanks, it is equipped with an additional fixed bush knife fixed to the base coaxially with the main fixed bush knife and symmetrically to it relative to a movable knife, a wedge with a protrusion made on it, mounted on a movable plate with the possibility of interaction with a clip, a leaf spring mounted on the input part of the mandrel, while the mandrel is made of three parts, the middle of which has a length equal to the length of the stationary sleeve knife, and can move in the cutting plane, the holder with a movable sleeve knife is mounted to move in the cutting plane in two mutually perpendicular directions, spring-loaded in these directions and nene with supporting and inclined platforms located with the possibility of interaction, respectively, with the protrusion and the inclined surface of the wedge. FI.G.1 1227377 A1