SU1549639A1 - Die for extruding projections on hollow parts - Google Patents

Abstract

The invention relates to the processing of metals, in particular to dies for extruding protrusions on hollow parts. The purpose of the invention is to expand the technological capabilities of the stamp. The stamp contains upper and lower plates, a hollow matrix fixed on the upper plate with forming inserts, external and internal fixators mounted on the lower plate. The internal retainer is installed with the possibility of entering into the working cavity of the die and punches. The stamp is provided with pivotally by means of axles levers located between the outer and inner latches. Punches are mounted on the free ends of levers that have a wedge on surfaces that are in contact with an internal retainer. The internal retainer is made with a cavity corresponding to the internal shape of the part. The number of levers is selected by the number of protrusions of the part. 2 Il.

Description

The invention relates to the processing of metals by pressure.

The purpose of the invention is to expand the technological capabilities of the stamp.

FIG. 1 shows a stamp, a general view; in fig. 2 - the same at the final moment of punching.

A stamp for extruding protrusions on hollow parts, mainly with a shaped bottom, contains upper 1 and lower 2 plates fixed on the upper plate of a hollow die 3 with forming inserts 4 mounted on the lower plate outer 5 and inner 6 latches, the last of which is mounted with the possibility of entering into the working cavity of the matrix 3, and the punches 7. The stamp is provided with pivotally fixed by means of the axes 8 levers 9 located between the outer 5 and the inner 6 clamps, while the punches 7 are mounted on the free ends of the levers 9 having a wedge

10 on the surfaces in contact with the inner latch 6, the inner latch 6 being provided with a cavity corresponding to the inner shape of the part 11, and the number of levers is selected according to the number of projections on the part 11.

A wedge 12 is installed in the guide dies 3. The outer latch 5 is spring-loaded 13. The wedge 12 is housed in the housing 14. The stamp also contains the clip 15 and the pushers 16. The clip 15 is rigidly connected to the housing 14 and has the possibility of axial movement in the guide plates 2 together with the housing 14. The pushers 16, which are in contact with the yoke 15, provide the necessary force to hold the yoke 15 and the housing 14 in the upper initial position.

The stamp works as follows.

Detail 11 is mounted on an external fixture 5. When the press slide is lowered, the forming inserts 4 dies 3 s COP

four

WITH

about

WITH

with

by means of wedges 12 are moved in the guide dies 3. In this case, the matrix acts on the retainer 5, overcomes the force of the springs 13 until the retainer 5 rests against the housing 14. The part is clamped between the two forming inserts 4 of the matrix 3. With further movement press slide down the wedge surface 10 levers 9 interacts with the wedge

ki 4 matrices 3 move apart in the radial direction.

Claims (1)

Claims of the Invention A stamp for extruding protrusions on hollow parts, preferably with a shaped bottom, containing upper and lower plates, a hollow matrix fixed on the upper plate with forming inserts, as well as external and internal fixators mounted on the lower plate, after the surface of the retainer 6 fixing the bottom from which is installed with the possibility of detail on the internal contour. The levers 9 enter into the working cavity of the die, and rotate about an axis 8, and the punches 7 fixed on the levers squeeze the protrusions on the part 11. punches, characterized in that, in order to expand technological capabilities, it is equipped with levers mounted between external and internal latches. When the slide is up, under the action of hinged one end on pushers 16, holder 15 with housing 14 is mounted with possibility of being lifted , while there is a rotation of the levers 9 to the axis of the stamp. Then, the external clamp 5 is lifted with the part 11 relative to the fixed one by the root clamp, and the punches are mounted to the trigger 14 under the action of the springs 13, and inserted into the free ends of the levers. In this case, the free ends of the levers are made with a wedge surface in contact with the intra matrix 4 of the matrix 3 are moved apart in the radial direction. DETAILED DESCRIPTION A stamp for extruding protrusions on hollow parts predominantly with a shaped bottom, comprising an upper and lower plate, a hollow matrix fixed on the upper plate with forming inserts, as well as external and internal fixators mounted on the lower plate, followed by pans, characterized in that the purpose of expanding technological capabilities, it is equipped with levers mounted between the outer and inner latches, hinged at one end on the cage mounted with the possibility of pulling the fixed rum, and punches are mounted on the free ends of the levers. movement on the bottom plate, the free ends of the levers are made with a wedge surface in contact with the inner figl 15