SU1586841A1 - Die set - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to dies for the bulk forming of parts. The purpose of the invention is to expand the technological capabilities of the stamp. The stamp contains an upper plate with sectional working elements and intermediate elements in the form of hydrocyclones connected via hydroelectric valves with a drain tank, as well as a lower plate with a working insert. When the upper plate of the punch is moved downwards, the hydroelectric valves are switched on alternately, which, by means of hydraulic cylinders, introduce the work element section according to a given program, deforming the workpiece. 1 il.

Description

The invention relates to the processing of materials by pressure, in particular to the design of dies for stamping stepped parts.

The aim of the invention is the expansion of technological capabilities.

The drawing shows a stamp.

The stamp contains an upper composite working insert with a stream made in the form of sections 1–3 installed coaxially with relative movement from one another and located between them and the upper movable base plate 4 of hydraulic cylinders 5–7 connected to fluid reservoir 8 through hydroelectric valve 9 -11, which are connected to electrical switches 12-14, in contact with sets of insulated electrically conductive plates 15-17 insulated from one another, to any of which a power source can be connected. On the lower base plate 18 is located lower working insert.

19. In addition, a bracket 20 is attached to the top plate 4.

The stamp works as follows.

In accordance with the geometry of the parts to be stamped, the movement program is adjusted for each section 1-3, which consists in connecting the power source to the corresponding sets of plates 15-17. On the lower working insert 19, the blank 21 is laid and the press is turned on during the working stroke. Together with the press slider, the upper support plate 4 and electrical switches 12-14, which, in turn, are alternately connected to successive sets of plates 15-17, move. If, during movement, electric switches 12-14 are connected to plates that are not connected to a power source, then hydraulic valve 9 to 11 of the corresponding hydraulic cylinders 5-7 are closed, the volume of fluid in the hydraulic cylinders 5-7 is constant, and hydraulic cylinders 5-7 behave as hard and connected to it

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sections 1-3 move down, deforming the material. If the electrical: switches 12-14 in some part of the path are connected to the plates to which the power supply is connected, the hydraulic valves 9-11 are open, sections 1-3 remain stationary due to the flow of fluid from the hydraulic cylinders 5-7 to the reserve1- ar 8, in this case, the hydraulic cylinders play the role of a flexible intermediate element. If during further movement the electric switches 12, 13, 14 are again connected to plates not connected to the power source,; Hydroelectric valves 9-11 are closed, the release of fluid from hydraulic cylinders 5, 6, 7 is stopped and sections 1-3 connected to it continue their movement and deformation of the material.

Thus, in one working stroke of the press, each of sections 1-3 can repeatedly be rigidly connected to the upper plate 4 and deform the material or remain stationary in the desired portion of the plate stroke. When the slide is retracted upward, power is supplied to all hydraulic valves 9-11, which open at the same time, connect hydraulic cylinders 5-7 to reservoir 8. At the beginning of the movement of the upper plate 4 of the stamp upwards section 1-3 remain stationary, the liquid fills hydraulic cylinders 5 -7 due to the weight of the sections and the overpressure in the tank 8. When

The further movement of the section is raised upwards with a bracket 20 connected to the upper plate 4.

Claims (1)

Claim of Invention. Stamp containing top plate with a sectional working tool, intermediate elements placed between the sections of the working tool and the top plate, as well as a fixed bottom plate with a working insert having engraving, characterized in that, in order to expand technological capabilities, it is equipped with electric switches mounted on the top plate, electric drive plates, one from another, connected to the power source and placed on the bottom plate with the possibility of interaction with electric switches, as well as a guide - electric valves connected to electrical switches, and a fluid reservoir, and the intermediate elements are made in the form of hydraulic cylinders connected to the fluid reservoir hydroelectric valves, 20 s