CN105251867A - Rear axle locking gasket die capable of punching 24 holes in two steps and machining process of die - Google Patents
Rear axle locking gasket die capable of punching 24 holes in two steps and machining process of die Download PDFInfo
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- CN105251867A CN105251867A CN201510859018.1A CN201510859018A CN105251867A CN 105251867 A CN105251867 A CN 105251867A CN 201510859018 A CN201510859018 A CN 201510859018A CN 105251867 A CN105251867 A CN 105251867A
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Abstract
The invention discloses a rear axle locking gasket die capable of punching 24 holes in two steps. The die comprises an upper die body and a lower die body. The upper die body comprises a die shank, an upper die plate, an upper base plate and a male die fixing plate. The male die fixing plate is of a step structure with the upper portion being large and the lower portion being small. The step of the lower portion of the male die fixing plate is cylindrical. 12 punching male die bodies are uniformly arranged on the male die fixing plate in the circumferential direction of the cylindrical step. The lower die body comprises a female die fixing plate, a lower die base plate and a lower die plate. 12 female die positioning holes are uniformly formed in the female die fixing plate in the circumferential direction of the center. A punching female die body is arranged in each female die positioning hole. An automatic correction guiding mechanism and a discharging mechanism are arranged between the male die fixing plate and the female die fixing plate. Punching stations are arranged between a punching male die body and punching holes of a punching female die body. According to the rear axle locking gasket die, the service life is long, the punching process is stable, secondary punching is adopted so that a set of dies is omitted, positioning for the secondary punching is convenient, and the appearance of a product is regular.
Description
Technical field
The invention belongs to machining equipment field, specifically relate to a kind of back axle locking packing ring two step punching 24 punch dies.
Background technology
Rear axle assy is subtracted assembly be connected with semiaxis by main, and semiaxis is connected with rear-wheel hub assembly, and locking packing ring works to lock bearing nut and namely prevents bearing nut Hui Song, and it directly affects semiaxis and rear-wheel hub assembly bonding strength.By traditional at present perforating die structure, guide pillar, guide pin bushing directly lead upper and lower template, affect larger by machine tool accuracy, Mould Machining precision etc.Because this workpiece thickness of slab is thicker, 4.0mm can be reached, and once rush 12 Φ 7 holes again simultaneously, the easy play of each piercing punch in process of production, thus make punching convex, recessed gap uneven, even sometimes punching convex, cutting edge of die are gnawed scarce, each hole bur more (workpiece punching burr directly can affect assembling function) during such punching, thus be difficult to ensure product quality, and general often making 1000-1200 part product will form removal sharpening punching convex, cutting edge of die.This workpiece sheet material is thick in addition, once rushes porous simultaneously, and each aperture is less again, generally often makes 2000 products, and piercing punch is fracture just, frequently will change piercing punch like this, and cause mould and die accuracy to decline, thus reduce the mold use life-span.For this reason, be necessary to design a kind of can ensure product quality while, enhance productivity, improve die life short, reduce back axle locking packing ring two step punching 24 punch dies of production cost.
Summary of the invention
The object of the invention is to the deficiency optimizing existing production technology, adapt to reality need, provide a kind of back axle locking packing ring two step to rush 24 punch dies.
In order to realize object of the present invention, the technical solution used in the present invention is:
A kind of back axle locking packing ring two step punching 24 punch dies, comprise patrix and counterdie,
Described patrix comprises the die shank, cope match-plate pattern, upper padding plate and the punch retainer that are fastenedly connected successively from top to bottom; Described punch retainer is staircase structural model, and step is up big and down small, and the lower step of punch retainer is cylindricality, and described punch retainer is circumferentially evenly provided with 12 piercing punches around cylindricality step,
Described counterdie comprises the die block, counterdie backing plate and the lower bolster that are fastenedly connected successively from top to bottom,
Described die block centrally be circumferentially evenly provided with 12 die locating holes, be provided with punching concave die in die locating hole,
Automatic calibration guiding mechanism and shedding mechanism is provided with between described punch retainer and die block;
It is punching station between described piercing punch and the punching of punching concave die.
Described shedding mechanism comprises guide plate and discharging rubber, the top of die block is provided with guide plate, the counterdie body of piercing punch and the middle via hole of guide plate are slidably connected, the centre of the cylindricality ladder of described punch retainer is provided with blind hole, is provided with five discharging rubbers between the blind hole that the front and rear sides of guide plate and punch retainer and guide plate and punch retainer are provided with.
Described automatic calibration guiding mechanism is divided into the level correction mechanism of workpiece and the vertical correction mechanism of composite die, comprises guide plate, alignment pin, guide pin bushing and guide pillar.
The centre of die block is provided with locating hole, and alignment pin is connected with the locating hole of die block by interference fit; The middle lower portion of described guide plate is provided with guiding shape chamber, and guiding shape chamber and alignment pin matched in clearance form the level correction mechanism of workpiece.
Alignment pin is provided with two locating notches, and the angle between the center line of two locating notches is 45o.
Described guide plate both sides are provided with guide pillar hole, guide pillar hole and guide pillar matched in clearance, guide pillar is connected with punch retainer by interference fit, described guide pin bushing is connected with the guide pin bushing via hole of die block by interference fit, guide pin bushing and the guide pillar of the same side are in axial sliding connection, and guide pin bushing, guide plate and guide pillar form the vertical correction mechanism of composite die.
The double-faced clearance of the guide pillar hole that described guide plate both sides are provided with and guide pillar matched in clearance is 0.10-0.12mm, and the double-faced clearance of guide pillar and guide pin bushing is 0.08-0.10mm, the double-faced clearance 0.64-0.66mm of piercing punch and punching concave die.
Beneficial effect of the present invention is:
1. die punching process stabilization of the present invention, two times punch is adopted to save one set of die, and two times punch location is convenient, the relative dimensions such as each hole bur height of stamping forming product, position degree, centre-to-centre spacing, all in the margin of tolerance, ensure that the regular of product appearance shape.
2. piercing punch guide plate leads, and guide plate guide pillar leads, and so both ensure that each piercing punch in process of production can not play, has turn improved each piercing punch intensity, thus improve the quality of products and die life.
3. punch retainer design is in step, the high step in such centre is used for fixing piercing punch, piercing punch is made to expose the height of punch retainer as far as possible low, thus improve piercing punch intensity, step low outside punch retainer and the middle hole hollowed out are used for loading and unloading material rubber, so both ensure that mould has enough stripping forces, make again mould closed height <300mm.
Accompanying drawing explanation
Fig. 1 is structural representation of the present invention;
Fig. 2 is the top view of part of the lower die of the present invention;
Fig. 3 is the structural representation of workpiece after one-off hole-piercing;
Fig. 4 is the structural representation of workpiece after secondary punching;
In figure, die shank 1, cope match-plate pattern 2, upper padding plate 3, punch retainer 4, guide pillar 5, piercing punch 6, discharging rubber 7, guide plate 8, guide pin bushing 9, die block 10, punching concave die 11, alignment pin 12, counterdie backing plate 13, lower bolster 14.
Detailed description of the invention
Below in conjunction with drawings and Examples, the present invention is further described:
Embodiment: to process N900 heavily card back axle locking packing ring: see Fig. 1-Fig. 4.
A kind of back axle locking packing ring two step punching 24 punch dies, comprise patrix and counterdie, described patrix comprises the die shank 1, cope match-plate pattern 2, upper padding plate 3 and the punch retainer 4 that are fastenedly connected successively from top to bottom;
Described punch retainer 4 is staircase structural model, and step is up big and down small, and the lower step of punch retainer 4 is cylindricality, and described punch retainer 4 is circumferentially evenly provided with 12 piercing punches 6 around cylindricality step,
Described counterdie comprises the die block 10, counterdie backing plate 13 and the lower bolster 14 that are fastenedly connected successively from top to bottom,
Described die block 10 centrally be circumferentially evenly provided with 12 die locating holes, be provided with punching concave die 11 in die locating hole,
Automatic calibration guiding mechanism and shedding mechanism is provided with between described punch retainer 4 and die block 10;
Be punching station between described piercing punch 6 and the punching of punching concave die 11.
Described shedding mechanism comprises guide plate 8 and discharging rubber 7, the top of die block 10 is provided with guide plate 8, the counterdie body of piercing punch 6 and the middle via hole of guide plate 8 are slidably connected, the centre of the cylindricality ladder of described punch retainer 4 is provided with blind hole, five discharging rubbers 7 are provided with between the blind hole that the front and rear sides of guide plate 8 and punch retainer 4 and guide plate 8 and punch retainer 4 are provided with, guide plate 8 selects mold materials T10A, quenching hardness is HRC50-55, the intensity of such raising guide plate 8, thus improve die life.This structure rear mold bulk life time is adopted to improve 19 times.
Described automatic calibration guiding mechanism is divided into the level correction mechanism of workpiece and the vertical correction mechanism of composite die, comprises guide plate 8, alignment pin 12, guide pin bushing 9 and guide pillar 5.
The centre of die block 10 is provided with locating hole, and alignment pin 12 is connected by the locating hole of interference fit with die block 10; The middle lower portion of described guide plate 8 is provided with guiding shape chamber, and guiding shape chamber and alignment pin 12 matched in clearance form the level correction mechanism of workpiece.
The centre of die block 10 is provided with locating hole, and alignment pin 12 is connected by the locating hole of interference fit with die block 10, and alignment pin 12 is provided with two locating notches, and the center of two locating notches is 45o to the angle between alignment pin 12 center line.
Guide plate 8 be arranged on die block 10 top and between be provided with discharging rubber 7, the middle lower portion of described guide plate 8 is provided with guiding shape chamber, guiding shape chamber and alignment pin 12 matched in clearance, described guide plate 8 both sides are provided with guide pillar hole, guide pillar hole and guide pillar 5 matched in clearance, described guide pin bushing 9 is connected with the guide pin bushing via hole of die block 10 by interference fit, guide pillar 5 is connected with punch retainer 4 by interference fit, guide pin bushing 9 and the guide pillar 5 of the same side are in axial sliding connection, and guide pin bushing 9, guide plate 8 and guide pillar 5 form the vertical correction mechanism of composite die.
The double-faced clearance of the guide pillar hole that described guide plate 8 both sides are provided with and guide pillar 5 matched in clearance is 0.10-0.12mm, and guide pillar 5 is 0.08-0.10mm with the double-faced clearance of guide pin bushing 9, the double-faced clearance 0.64-0.66mm of piercing punch 6 and punching concave die 11.
Procedure of processing of the present invention and principle are summarized as follows:
The first step, is arranged on single-point open type steam-operating forcing press by this mould;
Second step, blanking, is placed on the workpiece after blanking-rush macropore operation on die block 10, and with the macropore in the middle of the good workpiece of the excircle orientation of alignment pin 12, reserves the protrusion in the middle of workpiece in macropore with the breach of first on alignment pin 12;
3rd step, start forcing press and punch process is carried out to locking packing ring blank, press ram moves downward with cope match-plate pattern 2, upper padding plate 3 and punch retainer 4, guide plate 8 is first workpiece pressing under the pressure effect of discharging rubber 7, press ram continues to when moving to lower dead center, and piercing punch 6 moves downward and to complete first time with punching concave die 11 and rush 12 holes in advance;
4th step, forcing press is risen, press bench wears the first half return of mould, discharging is become by rushing 12 hole workpieces in advance under the effect of resilience after guide plate 8 is subject to discharging rubber 7 compression, meanwhile, punched scrap directly spills to complete from counterdie and lathe lower table and unloads dropping material waste material;
5th step, then with aid, the workpiece workpiece of made 12 holes in advance (namely in the third step) is rotated 45o, second breach on alignment pin 12 is reserved by the protrusion in macropore in the middle of workpiece; Because 12 holes (namely workpiece is uniformly distributed 12 holes, the angle between two adjacent holes is 360o/12=30o) that workpiece first time evenly goes out in advance; And the angle between two locating notches on alignment pin 12 is 45o, just have rotated 45o-30o=15o angle like this relative to punching position;
6th step: start forcing press, cope match-plate pattern 2 runs downwards with lathe upper table, guide plate 8 is first workpiece pressing under the pressure effect of discharging rubber 7, then piercing punch 6 moves downward and to complete workpiece second time with punching concave die 11 and rush 12 holes (namely going out other 12 holes of workpiece), workpiece is taken out with aid, punched scrap spills from counterdie and lathe lower table, and such workpiece just completes the stamping-out in whole 24 holes.
7th step: be placed on die block 10 by the workpiece after another blanking-rush macropore operation, repeats the operation of step 2 to step 5.
Adopt the workpiece of Mould Machining of the present invention, the relative dimensions such as each hole bur height, position degree, centre-to-centre spacing are all in the margin of tolerance.And sustainablely stable guarantee that N900 heavily reaches product drawing requirement in card back axle locking packing ring 24 hole.
Claims (8)
1. back axle locking packing ring two step punching 24 punch dies, comprise patrix and counterdie, it is characterized in that,
Described patrix comprises the die shank (1), cope match-plate pattern (2), upper padding plate (3) and the punch retainer (4) that are fastenedly connected successively from top to bottom; Described punch retainer (4) is staircase structural model, and step is up big and down small, and the lower step of punch retainer (4) is cylindricality, and described punch retainer (4) is circumferentially evenly provided with 12 piercing punches (6) around cylindricality step,
Described counterdie comprises the die block (10), counterdie backing plate (13) and the lower bolster (14) that are fastenedly connected successively from top to bottom,
Described die block (10) centrally be circumferentially evenly provided with 12 die locating holes, be provided with punching concave die (11) in die locating hole,
Automatic calibration guiding mechanism and shedding mechanism is provided with between described punch retainer (4) and die block (10);
Be punching station between the punching of described piercing punch (6) and punching concave die (11).
2. a kind of back axle locking packing ring two step punching according to claim 1 24 punch dies, it is characterized in that, described shedding mechanism comprises guide plate (8) and discharging rubber (7), the top of die block (10) is provided with guide plate (8), the counterdie body of piercing punch (6) and the middle via hole of guide plate (8) are slidably connected, the centre of the cylindricality ladder of described punch retainer (4) is provided with blind hole, before guide plate (8) and punch retainer (4), five discharging rubbers (7) are provided with between the blind hole that rear both sides and guide plate (8) and punch retainer (4) are provided with.
3. a kind of back axle locking packing ring two step punching according to claim 1 24 punch dies, it is characterized in that, described automatic calibration guiding mechanism is divided into the level correction mechanism of workpiece and the vertical correction mechanism of composite die, comprises guide plate (8), alignment pin (12), guide pin bushing (9) and guide pillar (5).
4. a kind of back axle locking packing ring two step punching according to claim 3 24 punch dies, it is characterized in that, the centre of die block (10) is provided with locating hole, and alignment pin (12) is connected by the locating hole of interference fit with die block (10); The middle lower portion of described guide plate (8) is provided with guiding shape chamber, and guiding shape chamber and alignment pin (12) matched in clearance form the level correction mechanism of workpiece.
5. a kind of back axle locking packing ring two step punching according to claim 4 24 punch dies, it is characterized in that, alignment pin (12) is provided with two locating notches, and the angle between the center line of two locating notches is 45o.
6. a kind of back axle locking packing ring two step punching according to claim 3 24 punch dies, it is characterized in that, described guide plate (8) both sides are provided with guide pillar hole, guide pillar hole and guide pillar (5) matched in clearance, guide pillar (5) is connected with punch retainer (4) by interference fit, described guide pin bushing (9) is connected by the guide pin bushing via hole of interference fit with die block (10), guide pin bushing (9) and the guide pillar (5) of the same side are in axial sliding connection, and guide pin bushing (9), guide plate (8) and guide pillar (5) form the vertical correction mechanism of composite die.
7. a kind of back axle locking packing ring two step punching according to claim 6 24 punch dies, it is characterized in that, the double-faced clearance of the guide pillar hole that described guide plate (8) both sides are provided with and guide pillar (5) matched in clearance is 0.10-0.12mm, guide pillar (5) is 0.08-0.10mm with the double-faced clearance of guide pin bushing (9), the double-faced clearance 0.64-0.66mm of piercing punch (6) and punching concave die (11).
8. a processing technology for back axle locking packing ring two step punching 24 punch dies, is characterized in that,
Back axle locking packing ring two step punching 24 punch dies are arranged on single-point open type steam-operating forcing press by the first step;
Second step, blanking, workpiece after blanking-rush macropore operation is placed on die block (10), and with the macropore in the middle of the good workpiece of the excircle orientation of alignment pin (12), reserves the protrusion in the middle of workpiece in macropore with first breach on alignment pin (12);
3rd step, start forcing press and punch process is carried out to locking packing ring blank, press ram moves downward with cope match-plate pattern (2), upper padding plate (3) and punch retainer (4), guide plate (8) first workpiece pressing under the pressure effect of discharging rubber (7), press ram continues to when moving to lower dead center, and piercing punch (6) moves downward and to complete first time with punching concave die (11) and rush 12 holes in advance;
4th step, forcing press is risen, press bench wears the first half return of mould, 12 hole workpiece dischargings will be rushed in advance under the effect of resilience after guide plate (8) is subject to discharging rubber (7) compression, meanwhile, punched scrap directly spills to complete from counterdie and lathe lower table and unloads dropping material waste material;
5th step, the workpiece of first time pre-punched hole will be completed, second breach on alignment pin (12) is used to reserve protrusion in the middle of workpiece in macropore again, due to 12 holes that workpiece first time goes out in advance, angle between two adjacent holes is 30o, and the angle between two locating notches on alignment pin (12) is 45o, just 15o is have rotated like this relative to punching position, repeat the 3rd step and two times punch processing is carried out to workpiece, complete the stamping-out in whole 24 holes, take out workpiece with instrument after punching press completes and load in body feed tank.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510859018.1A CN105251867A (en) | 2015-12-01 | 2015-12-01 | Rear axle locking gasket die capable of punching 24 holes in two steps and machining process of die |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510859018.1A CN105251867A (en) | 2015-12-01 | 2015-12-01 | Rear axle locking gasket die capable of punching 24 holes in two steps and machining process of die |
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| CN105251867A true CN105251867A (en) | 2016-01-20 |
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Cited By (6)
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| CN106040828A (en) * | 2016-08-12 | 2016-10-26 | 江西江铃底盘股份有限公司 | Punching and blanking progressive die for automobile drive axle locking washer and machining method of punching and blanking progressive die |
| CN107030177A (en) * | 2017-06-14 | 2017-08-11 | 江西江铃底盘股份有限公司 | A kind of automobile drive axle adjusting nut Blanking Punching Compound Die |
| CN107983829A (en) * | 2017-11-22 | 2018-05-04 | 柳州凌云汽车零部件有限公司 | The online hole punched device of door rail |
| CN108188265A (en) * | 2017-12-31 | 2018-06-22 | 合肥久享机械有限责任公司 | A kind of punch process platform of mounting bracket feature structure |
| CN109261843A (en) * | 2018-11-27 | 2019-01-25 | 贵州航太精密制造有限公司 | A kind of washer bending and forming tooling and the manufacturing process to the bending of washer part |
| CN114918314A (en) * | 2022-04-19 | 2022-08-19 | 漳州舒展家具有限公司 | One-step punching forming die for steel-wood furniture and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109261843B (en) * | 2018-11-27 | 2023-10-10 | 贵州航太精密制造有限公司 | Gasket bending forming tool and forming method for locally bending gasket |
| CN114918314A (en) * | 2022-04-19 | 2022-08-19 | 漳州舒展家具有限公司 | One-step punching forming die for steel-wood furniture and production process thereof |
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