CN208613662U - Automobile gimbal out star wheel cold-finishing mold - Google Patents

Abstract

The utility model discloses a kind of automobile gimbal out star wheel cold-finishing molds, punch-pin includes cope plate, fixation kit, column and formed punch, and column is fixed on cope plate by fixation kit, and column is tapered stud, the tapered contraction in its top, uniformly distributed on wall there are six assembling grooves；Formed punch is made of six mold sections with convex body, it is that uniformly there are six convex bodys on the cylindrical structure with center hole and cylindrical wall by the formed punch overall appearance structure that mold section forms, two neighboring convex body axial symmetry setting, convex body matches with outer oblique alley, center hole type chamber matches with column taper contraction front, and the convex ribs to match with assembling groove on column are additionally provided in mold section；Formed punch is fixed on column by formed punch fixation kit.Using the cold-finishing mold using the cold combined forging method of temperature, machining is substituted, high production efficiency is at low cost, and the period is short, and metal streamline is not cut off, intensity high impact-resistant, saves raw material, can satisfy auto parts and components and forms a complete production network requirement.

Description

Automobile gimbal out star wheel cold-finishing mold

Technical field

The utility model relates to automobile gimbal more particularly to a kind of production moulds of out star wheel.

Background technique

In car transmissions and other systems, in order to realize the power between two shafts that some axis are not overlapped Transmitting, it is necessary to use card gear.Card gear is generally made of universal joint and drive shaft, further includes sometimes Intermediate support, the universal joint are card gear in car transmissions " joint " positions, are allowed connected Angle between part changes in a certain range, and allows to have a certain range of relative telescopic to transport between connected part It is dynamic.It is interior including being equipped with that State Intellectual Property Office discloses a kind of extension type ball-cage constant velocity universal section (CN201410129701.5) The out star wheel of chamber and the interior star-wheel in inner cavity are equipped with a cage, the out star wheel between the out star wheel and interior star-wheel Inner surface on offer multiple outer alleys, the interior ball that multiple and outer alley is oppositely arranged is offered on the outer surface of interior star-wheel Road offers multiple cage windows being connected to outer alley, interior alley on the circumferential surface of the cage, is all provided in each cage window There is a rolling element, the inner and outer ends of the rolling element are located in interior alley and outer alley, and the outer alley includes three along outer The circumferentially equally distributed outer oblique alley of star-wheel is tiltedly equipped with outer liner ball road between alley outside adjacent two, the outer oblique alley The axis of center line and out star wheel α at an acute angle, the center line in the outer liner ball road is parallel with the axis of out star wheel, the interior alley Including interior oblique alley and interior liner ball road, the interior oblique alley and the setting of outer oblique alley mirror symmetry, the interior liner ball road and outer straight The setting of alley mirror symmetry；Tiltedly tiltedly alley center line intersects to obtain three intersection points in the center line of alley and three outside three, by These three intersection points determine an equidistant point, and the equidistant point is divided equally and is formed by by the axis of out star wheel and the axis of interior star-wheel Angle γ, the center of multiple rolling elements are respectively positioned in the equidistant point.Prior art: bar heating, press machine forge circular ring shape, Then inner cavity machining just shapes, mill processes essence forming.Metal streamline is cut off, and the loose compactness of material inside organization is not Good, bad mechanical property, production efficiency is low, and stock utilization is low, and the production cycle is long, and processing cost is high, it is difficult to meet zero, automobile The requirement of part matching quality.

Summary of the invention

The utility model provides a kind of cold-finishing mould using the cold combined forging method production automobile gimbal out star wheel of temperature Tool substitutes machining, and high production efficiency is at low cost, and the period is short, and metal streamline is not cut off, and interior tissue density is high, inner cavity Intensity high impact-resistant saves raw material, can satisfy the mating requirement of auto parts and components.

The utility model is achieved by the following technical solution:

Automobile gimbal out star wheel cold-finishing mold, including cavity plate and punch-pin, punch-pin include cope plate, fixation kit, stand Column and formed punch, column are fixed on cope plate by fixation kit, and the column is tapered stud, the tapered receipts in top It contracts, uniformly distributed on wall there are six assembling grooves；The formed punch is made of six mold sections with convex body, the formed punch being made of mold section There are six convex body, two adjacent convex body axis to be evenly distributed in the cylindrical structure with center hole and cylindrical wall for overall appearance structure It is symmetrical arranged, the convex body matches with outer oblique alley, and the type chamber of center hole and the taper contraction front of column match, institute The convex ribs to match with assembling groove on column are additionally provided in the mold section stated；The formed punch is fixed on by formed punch fixation kit On column.

The fixation kit includes the bolt bearing seat, column fixed block, fixture nut, column being fixed on cope plate Fixing bolt, column fixed block are fixedly installed by bolt bearing seat and fixture nut, and column is provided with central through hole, and column is fixed One end of bolt is round tack, and screw rod is fixed by nuts on column fixed block through centre bore and central through hole, column The round tack of fixing bolt is in contact with column and punch tip；Formed punch fixation kit is rubber ring, is provided in mold section Die holder, rubber ring sleeve is on die holder.

The utility model has the following beneficial effects: compared with prior art

The utility model provides a kind of cold-finishing mold, extraterrestrial using the cold combined forging method production automobile gimbal of temperature Wheel substitutes machining, and high production efficiency is at low cost, and the period is short, and resultant metal streamline is not cut off, and interior tissue density is high, Inner cavity intensity high impact-resistant saves raw material, can satisfy the mating requirement of auto parts and components.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of automobile gimbal out star wheel cross-sectional view in the embodiment of the present invention；

Fig. 2 is the top view of Fig. 1；

Fig. 3 is the structural representation top view of the utility model embodiment central post；

Fig. 4 is the A-A cross-sectional view of Fig. 3；

Fig. 5 is the structural representation top view of formed punch in the utility model embodiment；

Fig. 6 is the B-B cross-sectional view of Fig. 5；

Fig. 7 is the structural schematic diagram of the utility model embodiment central post fixing bolt；

Fig. 8 is the top view of Fig. 7；

Fig. 9 is the utility model embodiment blank deformation process flow chart；

Figure 10 is the structural schematic diagram of cold-finishing mold in the utility model embodiment.

Serial number in figure: 1, hollow o cylindrical body, 2, outer oblique alley, 3, preform, 4, cope plate, 5, column, 6, punching Head, 7, assembling groove, 8, convex body, 9, mold section, 10, center hole, 11, convex ribs, 12, formed punch fixation kit, 13, bolt bearing Seat, 14, column fixed block, 15, fixture nut, 16, column fixing bolt, 17, central through hole, 18, die holder.

Specific embodiment

The technical solutions of the present invention will be further described by way of example and in conjunction with the accompanying drawings.

Embodiment: referring to figure 1 and figure 2, a kind of automobile gimbal out star wheel, including hollow o cylindrical body 1, it is hollow Tiltedly alley 2 is circumferentially uniformly provided with outside six on the inner surface of cylindrical body 1, and outer oblique alley 2 is oval-shaped groove structure, outer oblique The center line of alley 2 and the axis of out star wheel α at an acute angle, adjacent two tiltedly 2 axial symmetry of alley settings outside, hollow cylindrical sheet Body 1 is that overall structure is forged.

Referring to shown in Fig. 3, Fig. 4, Fig. 5, Fig. 6, Fig. 7, Fig. 8, Fig. 9 and Figure 10,1. manufacturing process includes the following steps: under Material, ball blast: selection diameter of rod, by bar length needed for drawing size cut；Blank after base is sent into shot-blasting machine and is made Blasting treatment increases surface Ra value；2. jumping-up；3. warm forging: by blank heating to 200 DEG C of -240 DEG C of automatic coatings, being again heated to 960 DEG C of -1000 DEG C of backward extrusion form the preform 3 of the taper type structure with bottom, and the inner cavity of preform is tubaeform knot Structure, inner wall are equipped with oblique alley；4. annealing: the blank after warm forging being sent into shaft furnace and is made annealing treatment, is heated 3 hours are kept the temperature to 670 DEG C -690 DEG C, then slow cooling is come out of the stove to 330 DEG C -370 DEG C, removes interiors of products stress；5. ball blast, lubrication Processing: by the blank Shot Blasting after annealing, surface lubrication processing is carried out again after removing oxide on surface；6. cold closed-die forging: Using cold forging squeeze lathe, by the blank after ball blast, lubricated be put into cold-finishing mold under normal temperature condition carry out cold forging at Shape forms the hollow o cylindrical body 1 with bottom, improves product cavity alley dimensional accuracy；The cold-finishing mold it is convex Mould includes cope plate 4, fixation kit, column 5 and formed punch 6, and column 5 is fixed on cope plate 4 by fixation kit, and described is vertical Column 5 is tapered stud, and the tapered contraction in top, tapered wall is the hexagonal structure shunk, is evenly distributed on wall recessed there are six assembling Slot 7, the fixation kit include the bolt bearing seat 13 being fixed on cope plate 4, column fixed block 14, fixture nut 15, Column fixing bolt 16, column fixed block 14 are fixedly installed by bolt bearing seat 13 and fixture nut 15, and column 5 is provided with center Through-hole 17；The formed punch 6 is made of six mold sections 9 with convex body 8, and the 6 overall appearance structure of formed punch being made of mold section 9 is Uniformly distributed there are six convex body 8 in cylindrical structure and cylindrical wall with center hole 10, two adjacent 8 axial symmetry of convex body are arranged, The convex body 8 matches with outer oblique alley 2, and the type chamber of center hole 10 matches with the taper contraction front of column 5, described The convex ribs 11 to match with assembling groove 7 on column 5 are additionally provided in mold section 9；The formed punch 5 is solid by formed punch fixation kit 12 It is scheduled on column 5, formed punch fixation kit 12 is rubber ring, die holder 18 is provided in mold section 9, rubber ring sleeve is on die holder 18； One end of column fixing bolt 16 is round tack, and screw rod is fixed by nuts through centre bore 10 and central through hole 17 in column On fixed block 14, the round tack of column fixing bolt 16 is in contact with column 5 and 6 top of formed punch；7. machining: cutting Processing removal bottom；8. heat treatment: carrying out surface high frequency quenching treatment to the product after machining, high-frequency quenching rear surface is hard Change layer is 0.8-1.2mm, surface hardness 58-61HRC；9. cleaning oiling: to the product surface cleaning after heat treatment and oiling Antirust.

Due to being circumferentially uniformly provided with oblique alley outside six, the formed punch of extrusion die on automobile gimbal out star wheel inner surface Convex body must be had, forging and stamping produce out star wheel extruding formed punch and can not demould, and the warm forging of the utility model elder generation squeezes to form band bottom Taper type structure preform, the inner cavity of preform is flared structure, and the above structure is that preform warm forging squeezes Demoulding creates condition, and cold-finishing mold cold forging is recycled to improve product cavity alley dimensional accuracy, and cold-finishing formed punch is by more A mold section composition is moved back and forth by mold section in the taper contraction front of column to realize that cold-finishing demoulds.

Embodiment is not constituted and protects model to the utility model only to facilitate understand the technical solution of the utility model The limitation enclosed, it is all without departing from technical solutions of the utility model perhaps according to the technical essence of the utility model to top Any simple modification, equivalent change and modification made by case, still fall within scope of protection of the utility model.

Claims (2)

1. automobile gimbal out star wheel cold-finishing mold, including cavity plate and punch-pin, it is characterised in that: punch-pin include cope plate (4), Fixation kit, column (5) with formed punch (6), column (5) pass through fixation kit be fixed on cope plate (4) on, (5) the column is taper Column, the tapered contraction in top, on wall it is uniformly distributed there are six assembling grooves (7)；The formed punch (6) by six with convex body (8) (9) mold section forms, (6) overall appearance structure is with center hole cylindrical structure (10) and cylindrical wall to the formed punch being (9) made of mold section (8), (8) axial symmetry is arranged two adjacent convex bodys convex body, (8) (2) the convex body matches with outer oblique alley there are six being above evenly distributed with, The type chamber of center hole (10) matches with the taper contraction front of column (5), the mold section (9) on be additionally provided with and column (5) upper assembly (7) convex ribs that groove matches are (11)；The formed punch (5) pass through formed punch fixation kit be (12) fixed on column (5) on.

2. automobile gimbal out star wheel cold-finishing mold according to claim 1, it is characterised in that: the fixation kit Including be fixed on cope plate (4) on bolt bearing seat (13), column fixed block (14), fixture nut (15), column fixing bolt (16), stand (14) (13) (15) column fixed block is fixedly installed by bolt bearing seat with fixture nut, (5) (17) column is provided with central through hole, column is fixed The one end of bolt (16) is round tack, screw rod through centre bore be (10) (17) fixed by nuts with central through hole column fixed block (14) On, the round tack of column fixing bolt (16) with column (5) and formed punch (6) top is in contact；(12) formed punch fixation kit is rubber Circle, mold section (9) on be provided with die holder (18), rubber ring sleeve mounted in die holder (18) on.