CN2285704Y

CN2285704Y - Hot forging die for flange of half rear axle for automobile

Info

Publication number: CN2285704Y
Application number: CN 96225882
Authority: CN
Inventors: 杨若虎
Original assignee: TONGDA AUTOMOBILE FITTINGS FACTORY FENGCHENG CITY
Current assignee: TONGDA AUTOMOBILE FITTINGS FACTORY FENGCHENG CITY
Priority date: 1996-04-10
Filing date: 1996-04-10
Publication date: 1998-07-08
Anticipated expiration: 2006-04-10

Abstract

The utility model relates to a hot forging die for a flange of a half rear axle for automobiles, which is composed of an upper die 1, a lower die 2, a rough die block 3, a molding die block 3' and a guide sliding sleeve 4, wherein, the rough die block 3 and the molding die block 3' are arranged on the lower die 2. The utility model is mainly characterized in that the upper end of the lower die 2 is provided with a circular groove 21 which is used for placing the flange part of the forging press molding half axle, and a cirque-shaped lug boss 25 is formed on the upper end of the lower die 2; the lower end of the guide sliding sleeve 4 is provided with a groove 45 which is matched with the lug boss 25 to form rabbet fit, and the guide sliding sleeve 4 can only play guide function for the upper die 1. Thus the flange part of the half axle is fully in the lower die 2 to achieve forging press molding. The coaxiality is directly ensured, and mechanical cutting processing does not need to be carried out.

Description

The later half shaft flange hot forged mould of automobile

The utility model relates to the hot forged mould that is used to make the later half shaft flange of automobile.

The method and apparatus of manufacturing the later half shaft flange of automobile at present mainly is to adopt horizontal forging and upsetting machine, pendulum stone roller machine to forge by its corresponding mould, also has the pneumatic hammer of employing or board drop hammer to forge by its corresponding mould and makes.

Though adopt horizontal forging and upsetting machine or pendulum stone roller machine forging production efficiency higher, investment is big, 1,500,000 yuan every of horizontal forging and upsetting machines, every in pendulum stone roller machine is also wanted 700,000 yuan.

Adopt pneumatic hammer or board drop hammer to produce the semiaxis flange and have the little advantage of equipment investment, but its mould structure that is adopted of prior art is shown in Fig. 1-2, be that semiaxis flange finishing die forging modeling tool is by patrix 1, counterdie 2, cooperate the module 3/3 be installed on the counterdie 2 ' and fairlead 4 constitute, semiaxis flange 9 is in the finishing die forging is made, will be through first forging and shaping two procedures, the circular arc R of flange 91 parts of semiaxis 9 and the junction of its shaft portion is pattern piece 3 ' formation, this module 3 ' location is arranged on the counterdie 2, the cylindrical of semiaxis flange 91 is that the fairlead 4 of pattern tool limits formation, fairlead 4 slides with counterdie 2 and locatees, and the shape on flange 91 tops is shaped by patrix 1.Because flange 91 cylindricals were to be limited by fairlead 4 when it was shaped, at fairlead 4 internal shapings, and fairlead 4 is to slide with counterdie 2 to locate, its simple crack is bigger, when patrix 1 forging and pressing downwards, make the cylindrical of semiaxis flange 91 to produce skew to any direction, cause ring flange 91 cylindricals and its axostylus axostyle decentraction of semiaxis, therefore must carry out machining to ring flange 91 cylindricals, and flange 91 must carry out also just reaching specification requirement after the machining with the root circular arc R that axostylus axostyle joins.Use this mould forging and pressing to manufacture every later half shaft flange 9, need cutting waste metal 1KG, and increase about one times of machining period (comprising clamping, machining, replacing cutter time).

The purpose of this utility model provides a kind of simple in structure, and is easy to operate, can improve work efficiency, and the later half shaft flange hot forged mould of the automobile that reduces cost is especially for using the hot forged mould of producing later half shaft flange on pneumatic hammer or the board drop hammer.

Technical solution of the present utility model is, offer a circular concave station that is used to put the flange portions of moulding semiaxis in the upper center of counterdie, to making the counterdie upper end be formed with round ring boss by concave station, offer the circular groove that cooperates with this boss in the lower end of fairlead, workpiece---the semiaxis flange is in excellent suitability for press forming in the counterdie fully like this, fairlead then only rises the patrix guide effect, the later half shaft flange and its axostylus axostyle that go out of forging and pressing processing and manufacturing can directly guarantee axiality like this, and need not carry out machining.

Fig. 1-2 is a prior art semiaxis flange hot forging forming mould structure schematic diagram, and wherein Fig. 2 represents forging state just, and Fig. 1 is expressed as the die forging state.

Fig. 3 is the later half axle construction shape of an automobile schematic diagram.

Fig. 4-the 6th, the utility model hot forged mould structural representation, wherein Fig. 5 represents the first forging state of the utility model, and Fig. 4 is expressed as the die forging state, and Fig. 6 is the fairlead structural representation.

Below in conjunction with accompanying drawing the utility model is elaborated.

Referring to Fig. 4,5, this reality is made the novel patrix 1 that includes, counterdie 2, be installed in first forging die piece 3 on the counterdie 2 and shaping module 3 ', guide sleeve 4 constitutes, the first forging die piece 3/ shaping module 3 that constitutes by two halves ' be installed in module 3/3 ' installation taper hole 5 of offering in the counterdie 2, it is characterized in that upper center at counterdie 2 offers a circular concave station 21 that is used to put ring flange 91 parts of forging forming semiaxis 9, the corresponding upper end of counterdie 2 that makes is formed with round ring boss 25, offer the circular groove 45 that matches with counterdie 2 upper end boss 25 in the lower end of fairlead 4, the seams that form in the boss 25 insertion grooves 45 cooperate, the internal diameter of fairlead 4 is consistent with the sidewall 21 ' diameter of counterdie 2 concave stations 21,4 of fairleads rise patrix 1 guide effect, the workpiece semiaxis 9 that is forged and pressed like this, particularly its ring flange 91 parts are in excellent suitability for press forming in the counterdie 2 fully, can directly guarantee axiality like this, and need not carry out machine cut processing.

Referring to Fig. 5, the upper end side portion structure of its first forging die piece 3 of the utility model is formed with annular boss 35, and this boss 35 cooperates with the concave station 21 on counterdie 2 tops.

When the utility model is used, in the counterdie 2 of earlier first forging die piece 3 being packed into, semiaxis flange blank put into wherein carries out just forging, take out module 3 then, in counterdie 2, insert again finishing die piece 3 ', load onto fairlead 4 and patrix 1 carries out excellent suitability for press forming.

The utility model has overcome the shortcoming of prior art, and is simple in structure, easy to operate.Because the flange portions of semiaxis and shaft portion are that the location is shaped in same mould, the skew that has produced when having avoided forging and pressing, so can make the cylindrical of semiaxis flange and axostylus axostyle concentric, machining need not be carried out and just Design Requirement Drawing can be reached, not only avoided machine cut processing, and shorten machining period more than 1 times, therefore the production cost of every semiaxis is obviously reduced.

Claims

1, the later half shaft flange hot forged mould of automobile, especially for using the hot forged mould of producing the later half shaft flange of automobile on pneumatic hammer or the board drop hammer, include patrix (1), counterdie (2), be installed in first forging die piece (3) and shaping module (3 ') on the counterdie (2), guide sleeve (4) constitutes, first forging die piece (the 3)/shaping module (3 ') that is constituted by two halves is installed in module (3/3 ') the installation taper hole of offering in the counterdie (2) (5), it is characterized in that, offer one in the upper center of counterdie (2) and be used to put the circular concave station (21) of ring flange (91) part of forging forming semiaxis (9), the upper end of corresponding counterdie (2) is formed with round ring boss (25), offer the toroidal cavity (45) that matches with counterdie (2) upper end boss (25) in the lower end of fairlead (4), form boss (25) and insert the interior seam cooperation of groove (45), the internal diameter of fairlead (4) is consistent with sidewall (21 ') diameter of counterdie (2) groove (21).

2, hot forged mould according to claim 1 is characterized in that just the upper end side portion structure of forging die piece (3) is formed with annular boss (35), and this boss (35) cooperates with the concave station (21) on counterdie (2) top.