CN2390715Y

CN2390715Y - Extending bottom pressing die

Info

Publication number: CN2390715Y
Application number: CN 99218279
Authority: CN
Inventors: 冯勇
Original assignee: Individual
Current assignee: Individual
Priority date: 1999-08-02
Filing date: 1999-08-02
Publication date: 2000-08-09
Anticipated expiration: 2009-08-02

Abstract

The utility model relates to an extending bottom-pressing die, which belongs to the technical field of the punching process and comprises a punching head (1) and a pinching concave die (2), wherein, a die cushion (4) is arranged below the pinching concave die (2) and a bottom punch (3) is arranged inside the middle hole of the die cushion (4). The die has the advantage of simple structure, and can be widely used for cup-shaped parts with the bottom-forming process.

Description

A kind of pressure bottom die of extending

The utility model belongs to the technical field of punch process, is specifically related to a kind of pressure bottom die of extending.

Ironing be gap between protruding, the die less than the thickness of blank, and the vertical wall section of blank pressurized by the gap time produces significant attenuation phenomenon, and a kind of method for drawing that the sidewall height is increased.The workpiece quality height of ironing, wall ratio are more even, any surface finish.Because two to pressurized, crystal grain is fine and closely woven, has improved intensity.Ironing is compared with cold extrusion, because the deformed area is little, required equipment tonnage is little; Compare with ironing not, do not have wrinkling problem, do not need flange fixing installation, mould structure is simple, inexpensive.But present ironing mould all is to leak material formula mould down, can not form processing to the bottom of workpiece when pull and stretch finishes.

The purpose of this utility model is: a kind of pressure bottom die of extending is provided, and this mould structure is simple, and it can not only carry out ironing processing to workpiece, and can also form processing in the bottom to workpiece when the pull and stretch process finishing.

The purpose of this utility model is achieved in that a kind of extending of the utility model press bed die to have drift and ironing die, and the end opening place in the described ironing concave die cavity is provided with the end and dashes.

Described a kind of extending presses bed die to have drift and ironing die, is provided with die-cushion below the described ironing die, is provided with the end in the described die-cushion mesopore to dash.

Described a kind of extending is pressed into the ironing concave die cavity by drift with workpiece when pressing bottom die work, when drawing process finishes, by drawing part bottom and the end towards contacting, press the end to be shaped and process and begin to carry out, after pressing end process to finish, dash the end of by workpiece is ejected the ironing die, thereby reached the purpose of this utility model.

The utility model has the advantages that: this is extended and presses bottom die simple in structure, and it can not only carry out ironing processing to workpiece, and can also form processing to the workpiece bottom when the pull and stretch process finishing.

Below in conjunction with accompanying drawing the utility model is further described.

Fig. 1 is that a kind of extending of the utility model pressed the structure chart of bottom die;

Fig. 2 is that a kind of extending of the utility model pressed the structure chart of bottom die;

Fig. 3 is one of embodiment of a kind of pressure bottom die of extending of the utility model;

Fig. 4 is two of a kind of embodiment of pressing bottom die of extending of the utility model.

Consult Fig. 1, a kind of extending of the utility model presses bed die to have drift (1) and ironing die (2), and the end opening place in described ironing die (2) die cavity is provided with the end towards (3).

Consult Fig. 2, the utility model is a kind of extends and presses bed die to have drift (1) and ironing die (2), is provided with die-cushion (4) below the described ironing die (2), is provided with the end in the mesopore of described die-cushion (4) towards (3).

Consult Fig. 3, a kind of extending of the utility model presses bottom die to dash (3), lower bolster (5), push rod (6), screw (7), pressing plate (8) and cope match-plate pattern (9) formation by drift (1), ironing die (2), the end.With screw (7) drift (1) is fixed on the cope match-plate pattern (9) earlier before the mold work, be placed on the end in the counterbore at lower bolster (5) middle part towards (3), and then ironing die (2) is fixed on the lower bolster (5) with pressing plate (8) and screw (7), pack at last push rod (6) and mould is fixed on the forcing press, adjust the gap between even drift (1) and the ironing die (2), mould just can have been worked.

Consult Fig. 4, a kind of extending of the utility model presses bottom die to dash (3), die-cushion (4), lower bolster (5), push rod (6), screw (7), pressing plate (8) and cope match-plate pattern (9) formation by drift (1), ironing die (2), the end.With screw (7) drift (1) is fixed on the cope match-plate pattern (9) earlier before the mold work, use pressing plate (8) and screw (7) that ironing die (2) and die-cushion (4) are fixed on the lower bolster (5) again, at last mould is fixed on the forcing press, push rod (6) He Dichong (3) packs into, adjust the gap between even drift (1) and the ironing die (2), mould just can have been worked.

Claims

1, a kind of extending presses bed die to have drift (1) and ironing die (2), it is characterized in that: the end opening place in described ironing die (2) die cavity is provided with the end towards (3).

2, a kind of extending presses bed die to have drift (1) and ironing die (2), it is characterized in that: be provided with die-cushion (4) below the described ironing die (2), be provided with the end in described die-cushion (4) mesopore towards (3).