SU1581463A1 - Compound die - Google Patents

Abstract

The invention relates to the processing of metals by pressure, in particular to dies for piercing, dividing and trimming complete forgings. The purpose of the invention is to improve the performance of the stamp. Combined stamp contains the upper plate and the upper movable traverse with a rigidly fixed cut matrix, a composite punch, the lower plate and the lower traverse, connected by columns with the upper plate and the upper traverse. When lowering the top plate of the stamp, the hole is pierced in the complete forging by the inner part of the punch, as well as the division of the forging into its component parts with simultaneous trimming of the outer part. 1 il.

Description

The invention relates to the processing of metals by pressure, in particular to the hot forging of complete forgings.

The aim of the invention is to improve the performance of the stamp.

The drawing shows the combined stamp of the left half - a stamp in the initial position; half right - the same in the final position.

The combined stamp consists of the bottom plate 1 on which the body 2 is mounted with the matrix 3 fixed on it and piercing 4. In the slots of the body 2 the lower yoke 5 is moved with the ejector 6 fixed on it. On the top plate 7 the outer part of the punch 8 is installed, in the grooves which moves the upper movable yoke 9 with the cutting matrix 10 fixed on it, the inner part of the punch 11 and the ejector 12, spring-loaded by the elastic element 13. The communication between the yoke 5 and 9 is carried out using the outer 14 and inner 15 telescopic Sgiach bushings and rods 16.

The stamp works as follows.

The complete forging 17 is placed on the die 3 and the piercing 4 and centered on the ejector 6. When the press slide moves down, the lower yoke 5 with the ejector 6 is lowered onto the plate 1. With the further course of the press, the upper movable yoke 9 abuts the inside of the punch 11 into the combined forging 17 " The top of the sheet 7 presses the movable yoke 9, ensuring the closure of the outer part of the punch 8 with the inner part of the punch 11 and the contact of the trimming matrix 10 with the burr of the complete forging, while the glands 16 completely go into the inner e sleeve 15. Pro (L

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piercing of the hole, cutting of forgings with the formation of parts 18-20, as well as trimming around the hole are carried out. When this ejector 12, spring-loaded elastic element 13, goes inside the punch 11.

During the return stroke of the press ram, the outer forging 20 remains clamped between the cutting die 10 and the outer part of the punch 8. When the force stops, the spring 13 returns to the initial state the ejector 12, with the result that the web of the pierced bore 18 remains on the piercing 4. Plate 7 moves upward, remaining in contact with the movable cross-member 9, due to pinching of the forging 20, the die 10 and the outer part of the punch 8. After contact of the inner sleeve 15 and the outer sleeve 14, the upper movable cross-member 9 stops. As a result of further movement of the plate 7, the outer part of the punch 8 is displaced relative to the inner 11, the forging 20

is released and falls onto the die 3. All parts of the complete forging are removed from the die and the stamping process is repeated

Claims (1)

Claims of Invention A combined die comprising a matrix placed on the bottom plate, a cut matrix, an upper movable cross bar mounted between the upper plate and the lower cross bar and connected to them with threads, and also a pusher, characterized in that The matrix is rigidly fixed on the upper movable crossbeam, the punch is made composite with the outer part rigidly fixed on the upper plate and the inner one mounted on the upper movable crossbeam with the ability to move audio relative to the outer portion of the punch, and an ejector fixed to the upper movable cross beam.