SU376460A1 - STAMP FOR HANGING LARGE DETAILS - Google Patents

Description

one

This invention relates to devices for quenching large-sized products.

A stamp is known for quenching large-sized parts, including upper and lower plates, a punch and a die with cavities for the supply of a quenching liquid. However, when hardening parts with high boards, warping of the boards occurs, a change in the angle of inclination of the boards, due to the large gap between the punch and the die.

The purpose of the invention is to provide a permanent fixation of the geometries of a hardened part with a stamp in the process of its hardening and free removal of the part after quenching. This is achieved when the punch and die matrix are assembled with prefabricated fixed and movable parts with guides mounted on rollers to move the moving parts of the pu ness and the die matrix in the direction of shrinkage of the hardened part. In addition, the moving parts of the punch are provided with a wedge device that, when the die closes with the corresponding moving parts of the die, forms wedge pairs that clamp the sides of the hardened part and fix its geometry during the hardening process. The number of moving parts of a punch and die with wedge devices depends on the shape of the hardened part.

The drawing schematically shows the quenching stamp, section.

The stamp for the filling contains the bottom plate / with guides mounted on it a fixed part of the matrix 2 and a movable part of the matrix 5 with a guide

4, the wedge device 5, the movable part of the punch 6 with the valve guide 7, the fixed part of the punch S, the upper plate 9, the guide columns 10, the stop blocks and and the stops 12 and / 5 of the movable parts of the matrix and the puaison. The working surface of the punch and. Matrix made in the form of ribs.

The direction of the ribs on the punch and the matrix is mutually perpendicular. In the body of the punch and die there are cavities 14, to which

pressurized quenching fluid is supplied. To the surface of the hardened part (5), the tempering liquid is supplied through the opening 16. To move the moving parts of the punch and die, the guides are mounted on rollers P.

When opening the stamp, the wedge device 5 retracts the moving parts of the matrix 5 and the punch 6 in opposite directions to stops 12 and 13. At the same time, the size of the matrix

becomes equal to or larger than the size of the hot piece, and the punch size is smaller than the size of the cold piece. In this position, the hot part is placed in the stamp. When the die is closed, the movable parts of the punch and die are closed by the wedge device 5 with respect to the actual position of the bead of the part 15. The gap between the movable parts of the punch and the die is adjusted by adjusting the device 5. As the part shrinks, the moving parts of the punch and the die, as a whole, approach the fixed and at the end of the cooling process, the dimensions of the cold part are established. At the end of the quenching process, the die is opened and the wedge device 5 separates the moving parts of the punch and die, releasing the hardened part.

Subject matter of the HI and

Claims (2)

1. A stamp for hardening large-sized parts, containing the upper and lower plates, a die and a die with polast quenching fluid supply, characterized in that, in order to ensure the fixation of parts in the quenching process, the punch and die matrix are assembled from fixed parts and parts mounted for displacement and provided with guides and wedge devices constituting with corresponding parts of the matrix and punch wedge pairs for clamping the sides of the hardened part and moving the punch and die together in the direction of shrinkage of the hardened part. 2. The stamp according to claim 1, characterized in that, for the purpose of 0 | ensuring the movement of the moving parts of the punch and die, the guides are mounted on eliches. / 4 "7 11