CN201102036Y

CN201102036Y - Square flange spindle nose workblank hot extrusion shaping mold

Info

Publication number: CN201102036Y
Application number: CNU2007200922423U
Authority: CN
Inventors: 刘东霞; 闫林; 温志高; 蔡翠平; 刘东升; 刘明涛
Original assignee: HENAN YINGWEI DONGFENG MACHINE CO Ltd
Current assignee: HENAN YINGWEI DONGFENG MACHINE CO Ltd
Priority date: 2007-10-18
Filing date: 2007-10-18
Publication date: 2008-08-20
Anticipated expiration: 2017-10-18

Abstract

The utility model relates to a square flange axle blank extrusion and shaping mould, which includes an upper mould and a lower mould; the upper mould consists of an upper mould plate, a connecting rod, a shaping punch and a punch pin which are connected; the shaping punch and the punch pin enter into the lower mould as the cross beam of a punching machine moves down, action together with the lower mould, and then conduct hot extrusion to the ingot and shape it; the lower mould adopts a separate combined structure and includes a top swage, a middle swage and an anvil swage; the top swage, the middle swage and the anvil swage are subsequently clipped and form the cavity of the lower mould, wherein, the middle swage and the top swage are clipped and form the mould cavity of the square flange part of the square flange axle blank. A pressed cover clipped and punched at the upper part of the top swage and a mould base arranged out of the anvil swage are connected and fasten the top swage, the middle swage and the anvil swage together. Application of the utility model can help the internal tissue of the square flange axle blank to form metal streamlines which are spread axially, so that the mechanical performance is good and the anti-fatigue service life is long. The mould is easy to be processed and the middle swage which is easy to become ineffective can be replaced only, so as to save the manufacturing cost of the mould.

Description

The hot-pressed mould of square flange shaft capillus base

Technical field

The utility model relates to a kind of hot-extrusion mold, specifically is a kind of hot-pressed mould of square flange shaft capillus base that is used for.

Background technology

Shown in Figure 1 is the square flange shaft capillus of trailer vehicle bridge blank structure schematic diagram.Square flange spindle nose is welded on the vehicle bridge two ends, plays wheel limit supporting role.In the vehicle driving process, it not only bears the weight of whole vehicle body and vehicle-mounted cargo, and because the variation of road conditions, also to bear the effect of complicated alternate stress, therefore require spindle nose will have the metal streamline that distributes along axis, fine and close metal structure, good comprehensive mechanical performance and high anti-fatigue life.It belongs to the class security personnel part on the vehicle bridge, and the safety that the quality of its quality directly has influence on driving whether.Square flange shaft capillus base has square flange 1, the convex cone 2 that welds with axle housing after square flange 1 top has in the insertion vehicle bridge axle housing hole, the bottom is the step axle, square flange 1 lower end has and its taper seat that passes through mutually 3, the purpose of design taper seat 3 is shape transitions of being convenient to square flange and bottom circular shaft, alleviate spindle nose weight, the stress of avoiding wedge angle to cause is concentrated.In the prior art, existing method and the corresponding mould that has the spindle nose blank of circular flange with the hot extrusion technique manufacturing, but for spindle nose with square flange, because the characteristics of its shape, realize the Mould Machining difficulty that it is hot-pressed, taper seat 3 positions of particularly square flange lower end make the Mould Machining difficulty, and this position is because hot extrusion deformation is big, may cause mould at the easy ageing failure in this position, thereby cause entire die to scrap.Therefore square flange shaft capillus base adopts the die forging method manufacturing at present, need to forge and press through heating for multiple times, behind beginning forging, the square flange of finish-forging, process taper seat 3 and other machined surfaces through machined, waste of material is big, and whole complex procedures, production efficiency are low, and most important is to be difficult to form the metal streamline tissue that distributes vertically, make anti-fatigue life lower, be difficult to satisfy vehicle its special mechanical performance requirement.

Summary of the invention

The purpose of this utility model provides the hot-pressed mould of a kind of square flange shaft capillus base, use this mould to carry out hot-pressed square flange shaft capillus base, its interior tissue can form the metal streamline that distributes vertically, good mechanical property, anti-fatigue life height.Mould is easy to processing, replaceable easy failure site mould, thus improve die life.

Take following technical scheme for realizing the utility model purpose: the hot-pressed mould of a kind of square flange shaft capillus base, comprise patrix, counterdie, patrix is by cope match-plate pattern, extension bar, moulding is dashed, drift is formed by connecting, drift is contained in moulding and compresses on centre bore and by extension bar, cope match-plate pattern is connected with the forcing press moved cross beam, moulding is dashed, drift carries out hot extrusion with following the moving up in the counterdie of pressure machine cross-beam to blank, hot-pressed with the counterdie acting in conjunction to blank, described counterdie adopts split modular structure, comprise top swage, middle pattern, anvil swage, top swage, middle pattern, anvil swage forms the counterdie die cavity after the clamping successively, wherein said middle pattern, form the die cavity at the square flange position of square flange shaft capillus base after the top swage clamping; Comprise that also card is pressed in the gland on top swage top, is sleeved on the outer die holder of anvil swage, gland with top swage, middle pattern, anvil swage are tightened to one after die holder is connected.

Inserted in the square hole of top swage its lower end when described moulding was punched in the hot extrusion original position.

The utility model is applied to the manufacturing of square flange shaft capillus base, makes square flange shaft capillus base interior tissue can form the metal streamline that distributes vertically, good mechanical property, anti-fatigue life height.Because mould is dismountable split modular structure, particularly easily the square flange shaping of ageing failure adopts top swage and medium-sized die combination to be shaped, both be convenient to Mould Machining, can have only changed the middle pattern of easy inefficacy again aborning, thereby saved the cost that mould is made.Inserted in the top swage square hole its lower end when the moulding of patrix was punched in the hot extrusion original position, the accurately effect of guiding between the upper die and lower die when having played hot extrusion.

Description of drawings

Fig. 1 is square flange shaft capillus blank structure schematic diagram.

Fig. 2 is the utility model structural representation, state diagram when not putting into blank in the die cavity.

Fig. 3 is the top swage structure chart of counterdie.

Fig. 4 is the vertical view of Fig. 3.

Fig. 5 is the medium-sized mode structure figure of counterdie.

Fig. 6 is the vertical view of Fig. 5.

Fig. 7 puts into the preceding view of blank hot extrusion in the utility model die cavity.

Fig. 8 puts into view behind the blank hot extrusion molding in the utility model die cavity.

The specific embodiment

Below in conjunction with drawings and Examples the utility model is further described.

As Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5, shown in Figure 6, Fig. 2 adopts hot extrusion technique to produce the structural representation of the mould of square flange shaft capillus base shown in Figure 1, comprise patrix, counterdie, patrix comprises cope match-plate pattern 4, extension bar 5, moulding dashes 6, drift 7, extension bar 5 is threaded with cope match-plate pattern 4, moulding is threaded with extension bar 5 towards 6, drift 7 is contained in moulding and dashes in 6 centre bores, stretch out at the bottom punch position, the top is compressed by extension bar 5 bottoms, be shaped to dash 6 and drift 7 be combined to form the convex cone 2 of square flange shaft capillus base, square flange upper surface and tapered blind hole position, cope match-plate pattern 4 are connected (the forcing press moved cross beam is illustrated in the drawings) with the forcing press moved cross beam.Counterdie adopts split modular structure, comprise top swage 8, middle pattern 9, anvil swage 10, top swage 8, middle pattern 9, anvil swage 10 constitute the counterdie die cavity after the clamping successively, wherein, form the die cavity at the square flange position of square flange shaft capillus base after middle pattern 9, top swage 8 clampings, anvil swage 10 constitutes square flange shaft capillus base step axial region position die cavity.Top swage 8 tops have a card to press thereon gland 11, and anvil swage 10 is contained in the die holder 12, after bolt is connected between gland 11 and the die holder 12 top swage 8, middle pattern 9, anvil swage 10 are tightened to one.Moulding is dashed 6 and is had the square-section identical with square flange 1, when the forcing press moved cross beam is descending, drive moulding dash 6 and drift 7 be pressed into and be equipped with in the counterdie that carries out bar preform spindle nose blank, moulding dash 6 when the hot extrusion original position its lower end be positioned at top swage 8 square holes, thereby the accurately effect of guiding between the upper die and lower die has been saved complicated guiding mechanism has been set on forcing press when playing hot extrusion.

As shown in Figure 7, before the hot extrusion, in the counterdie die cavity, put into spindle nose blank 14 with bar predeformation.As shown in Figure 8, finished and be about to blank 14 under the patrix and be hot extruded into the forming process of spindle nose blank 15.Push rod 13 and patrix interlock (concrete syndeton is not signal in the drawings), at this moment, the forcing press moved cross beam makes patrix up, drives push rod 13 simultaneously spindle nose blank 15 is ejected counterdie.

Square flange 1 lower end has certain difficulty with being formed in mould design and the processing of its taper seat that passes through mutually 3, because this position is out of shape in hot-pressed process greatly, therefore easily aging earlier, scrap inefficacy, if mould is an overall structure, the more difficult processing in this position, therefore the utility model is designed to the split modular construction with counterdie, after being used for pattern 9 ageing failures of square flange shaping, only need to change this part mould, and need not change a whole set of mould, thereby can save the mould production cost, and the monomer of middle pattern 9 adds and also realize easily man-hour, if the big problem of this position difficulty of processing when having solved unitary mould.

Claims

1, the hot-pressed mould of a kind of square flange shaft capillus base, comprise patrix, counterdie, patrix is by cope match-plate pattern (4), extension bar (5), (6) are dashed in moulding, drift (7) is formed by connecting, drift (7) is contained in moulding and compresses on (6) centre bore and by extension bar (5), cope match-plate pattern (4) is connected with the forcing press moved cross beam, (6) are dashed in moulding, drift (7) carries out hot extrusion with following the moving up in the counterdie of pressure machine cross-beam to blank, hot-pressed with the counterdie acting in conjunction to blank, it is characterized in that: described counterdie adopts split modular structure, comprise top swage (8), middle pattern (9), anvil swage (10), top swage (8), middle pattern (9), anvil swage (10) forms the counterdie die cavity after the clamping successively, wherein said middle pattern (9), form the die cavity at the square flange position of square flange shaft capillus base after top swage (8) clamping; Comprise that also card is pressed in the gland (11) on top swage (8) top, is sleeved on the outer die holder (12) of anvil swage (10), gland (11) with top swage (8), middle pattern (9), anvil swage (10) are tightened to one after die holder (12) is connected.

2, the hot-pressed mould of square according to claim 1 flange shaft capillus base is characterized in that: described moulding is dashed (6) its lower end when the hot extrusion original position and is inserted in the square hole of top swage (8).