SU1590218A1 - Die for cutting pipes - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to the blank production of machine-building enterprises, and may find application in the preparation of dimensional billets of pipes. The purpose of the invention is to reduce production space. When lowering the upper plate 1, the wedge 3 clamps the pipe with a movable half-matrix 6, and the wedge 4 moves the slider 8 with the scoring knife 9 and guides 10 left attached, while the guides 10 move along straight grooves. The scoring knife 9 cuts through the pipe and with further lowering of the upper plate 1, the wedge 4 continues to move the slider 8 to the left, while the guides 10, moving along the curved sections of the grooves 11, shift the slider in a direction perpendicular to the plane of the cut of the pipe, until the notching knife 9 will not be removed from under the cutting knife 2, which, when the plate 1 is further lowered, cuts the pipe. 3 il.

Description

The invention relates to the processing of metals by pressure, in particular to the procurement of machine-building enterprises upon receipt of measured pipe blanks.

The purpose of the invention is the reduction of production space.

In FIG. 1 shows a stamp for cutting pipes, General view; in FIG. 2 - node I in FIG. 1; in FIG. 3 - stamp for cutting pipes, plan. ^1C

The stamp for cutting pipes contains an upper plate 1 on which a cutting knife 2 and wedges 3 and 4 are mounted, and a lower plate 5 with a pipe clamping mechanism in the form of a movable 6 and a fixed 7 half-matrix. In the fixed semi-matrix 7 there is a slider 8 with a notching knife 9 that interacts with the wedge 4. Moreover, the hole in the slider 8 in which the wedge 4 is placed is made larger than the width of the wedge 4 by the amount of displacement of the slider 8 in the direction perpendicular to the plane of the pipe cut. Guides 10 are fixed in the creep 8, and grooves 11 are made in the fixed semi-matrix 7, having straight and curved sections interacting with the guides 10. The notching knife 8 is made with an “undercut” larger than the depth of the groove to be cut, in order to be able to move in a direction perpendicular to the cutting plane pipes, together with the creeper 8.

The stamp works as follows.

When lowering the top plate 1, the wedge 3 moves the movable half-matrix 6 to the right, and the wedge 4 moves the creep 8 with a notching knife 9 fixed on it and the guides 10 to the left, while the guides 10 move along the grooves 11, interacting with their straight sections.

After clamping the pipe, a notching knife 9 cuts through its upper section. With further lowering of the upper plate 1, the wedge 4 continues to move the creep 8 to the left, while the guides 10, moving along the grooves 11, interact with their curved sections, moving the creep 8 in the direction perpendicular to the plane of the pipe cut, until the notching knife 9 will be removed from under the cutting knife 2, which, when the plate 1 is further lowered, cuts off the pipe.

When the plate 1 moves backwards, the wedge 4 after the cutting knife 2 leaves the cut pipe returns the creep 8 with the notching knife 9 fixed on it and the guides 10 to their original position.

Next, the cycle repeats.

Claims (1)

Claim A stamp for cutting pipes, comprising a lower plate with a movable and fixed half-matrix, a notching knife, an upper plate with a cutting knife and a wedge fixed to it for moving the moving half-matrix, means for moving the notching knife, made in the form of crawler ears, installed in the groove of the fixed half-matrix, and wedge for its movement, characterized in that, with the aim of 30 reducing the production area, the fixed semi-matrix on the surface of its contact with the creepers is made with curly grooves having a straight and olineyny portions, means for moving the scoring knife 35 is provided with at least two fingers attached to polzushke on either side of a wedge and mounted in the said curved grooves. / t Figure 2. Fig, E