CN202143928U

CN202143928U - Novel cross-axle prestressing closed forging die

Info

Publication number: CN202143928U
Application number: CN201120243681U
Authority: CN
Inventors: 不公告发明人
Original assignee: JIANGXI ANYUAN WANXIANG INDUSTRIAL CO LTD
Current assignee: JIANGXI ANYUAN WANXIANG INDUSTRIAL CO LTD
Priority date: 2011-07-12
Filing date: 2011-07-12
Publication date: 2012-02-15
Anticipated expiration: 2021-07-12

Abstract

A novel cross-axle prestressing closed forging die relates to the field of machining, and comprises an inner ring (1), a middle ring (2), an outer ring (3), a male die (4), a positioning pin (5) and an upper die holder (6), wherein the inner ring (1) is fixed at the inner side of the middle ring (2); the middle ring (2) is fixed between the inner ring (1) and the outer ring (3); the tail end of the positioning pin (5) is fixedly connected with the die holder (6); the front end of the positioning pin (5) penetrates through the middle ring (2) to be inserted in a positioning hole of the middle ring (2) at the lower end; the die holder (6) fixes the two ends of the inner ring (1), the middle ring (2) and the outer ring (3); and the male die (4) is fixed in the middle of the die holder (6). With the novel cross-axle prestressing closed forging die, the using rate of material can be effectively improved, the investment of devices can be reduced, the manufacturing cost for a single piece can be lowered, and the effects of high accuracy, lower surface roughness and excellent mechanical property can be achieved due to accurate closed forging.

Description

The closed forging die of a kind of novel cross axle prestressing force

Technical field

The utility model relates to field of machining and machinebuilding technology, is specifically related to the closed forging die of a kind of novel cross axle prestressing force.

Background technology

The cross axle part adopts the manufacturing of low-alloy steel material to form; Must carry out annealing softening to raw material before the extruding and handle, it is minimum that its hardness is dropped to, during extruding; Material radially flows in mold cavity and forms the cross axle of symmetrical structure; The flow process of material in mold cavity is longer, and metal lattice changes and is easy to generate the flow harden phenomenon in the flow process, and the metal that therefore flows is not easy to be full of the die cavity that has the wedge angle transition; And the die cavity of wedge angle transition very easily produces stress and concentrates under the immense pressure effect, the mould premature fatigue is destroyed.

Summary of the invention

The purpose of the utility model provides the closed forging die of a kind of novel cross axle prestressing force, and it can solve existing problem in the background technology effectively.

In order to solve the existing problem of background technology, the utility model adopts following technical scheme: it comprises mould inner ring 1, mould centre circle 2, mould outer ring 3, punch 4, alignment pin 5 and upper bolster 6; Mould inner ring 1 is fixed on the inboard of mould centre circle 2; Mould centre circle 2 is fixed between mould inner ring 1 and the mould outer ring 3; The tail end of alignment pin 5 is fixedly connected with die holder 6; Its front end passes in the locating hole of mould centre circle 2 of mould centre circle 2 insertion lower ends, and die holder 6 is fixed the two ends up and down of mould inner ring 1, mould centre circle 2 and mould outer ring 3, and punch 4 is fixed on the centre of die holder 6.

The utlity model has following beneficial effect: can improve stock utilization greatly, reduce equipment investment, reduce the single-piece manufacturing cost, accurate closed forging can reach high precision, lower surface roughness value and excellent mechanical property.

Description of drawings:

Fig. 1 is the structural representation of the utility model.

The specific embodiment:

Referring to Fig. 1, this specific embodiment is to adopt following technical scheme: it comprises mould inner ring 1, mould centre circle 2, mould outer ring 3, punch 4, alignment pin 5 and upper bolster 6; Mould inner ring 1 is fixed on the inboard of mould centre circle 2; Mould centre circle 2 is fixed between mould inner ring 1 and the mould outer ring 3; The tail end of alignment pin 5 is fixedly connected with die holder 6; Its front end passes in the locating hole of mould centre circle 2 of mould centre circle 2 insertion lower ends, and die holder 6 is fixed the two ends up and down of mould inner ring 1, mould centre circle 2 and mould outer ring 3, and punch 4 is fixed on the centre of die holder 6.

Forcing press makes two half modules matched moulds under the guiding of alignment pin 5 of mould during mold work, and punch 4 is in the bar the mold cavity from upper and lower both direction extruding simultaneously, makes blank forming,

This specific embodiment has following beneficial effect: can improve stock utilization greatly, reduce equipment investment, reduce the single-piece manufacturing cost, accurate closed forging can reach high precision, lower surface roughness value and excellent mechanical property.

Claims

1. the closed forging die of novel cross axle prestressing force is characterized in that it comprises mould inner ring (1), mould centre circle (2), mould outer ring (3), punch (4), alignment pin (5) and upper bolster (6); Mould inner ring (1) is fixed on the inboard of mould centre circle (2); Mould centre circle (2) is fixed between mould inner ring (1) and mould outer ring (3); The tail end of alignment pin (5) is fixedly connected with die holder (6); Its front end passes in the locating hole of mould centre circle (2) that mould centre circle (2) inserts the lower end, and die holder (6) is fixed the two ends up and down of mould inner ring (1), mould centre circle (2) and mould outer ring (3), and punch (4) is fixed on the centre of die holder (6).