CN103143624A - Punch forming process and mould for vehicle load sensing proportional valve support - Google Patents
Punch forming process and mould for vehicle load sensing proportional valve support Download PDFInfo
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- CN103143624A CN103143624A CN2013101129513A CN201310112951A CN103143624A CN 103143624 A CN103143624 A CN 103143624A CN 2013101129513 A CN2013101129513 A CN 2013101129513A CN 201310112951 A CN201310112951 A CN 201310112951A CN 103143624 A CN103143624 A CN 103143624A
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Abstract
The invention discloses a punch forming process and mould for a vehicle load sensing proportional valve support. The process comprises the following steps of feeding, blanking, auxiliary hole punching, forming, cutting and assembly hole punching; and a forming mould is divided into an upper die and a lower die, and the forming mould comprises an upper mould board (3), a terrace die (5), a lower mould board (15), a female die fixed plate (9), a guide column (1) and a guide sleeve (2). According to the process and the mould, by the adoption of a novel cold punching process, the difficult problem of finished piece positioning is solved, and one-time forming through the forming mould is realized. By the adoption of the process and the mould, the design size and the use performance of a product can be continuously and stably ensured, the capacity is promoted, the production cost is lowered, the quality and the fatigue life of an irregular and complex forming piece are improved, an outlook of the product is excellent, and the requirements on design and use are totally met.
Description
Technical field
The invention belongs to the Machining Technology field, relate to a kind of automobile load-sensing proportion valve support punch forming process and mould.
Background technology
The effect of automobile load-sensing proportion valve is for obtaining desirable front and back braking force distribution ratio, guarantee automobile in the process of moving the front and back wheel load proper ratio and guarantee not locking of trailing wheel when automobile emergency brake.SABS utilizes the variable in distance between vehicle body and vehicle bridge to change the pretightning force of spring, along with the increase of car load, correspondingly adjusts, and makes the braking force distribution that can obtain an approximate ideal under any load-up condition.Therefore, the SABS support plays an important role to braking force distribution of automobile.By traditional technique as shown in Figure 5 namely: blanking-blanking-Chong Kong – Fan Bian – Wan Qu – shaping.Because the overturning process material flows through pull and stretch, be out of shape owing to being subject to different directions with regional material when bending, cause the bending junction to be difficult to again be shaped, cracking and sharp knuckle often appear, shaping also can't reach product design and instructions for use again, and especially the car load fatigue test life-span is not up to standard.In addition, through flange and bending, the bolt hole position is yielding, is difficult to reach requirement, and the arc-shaped edges that joins with spiral spring seat is also irregular, easily causes the welding difficulty, and percent defective is high.
Summary of the invention
One of purpose of the present invention is designed a kind of novel cold punching technology, solves product and locates a difficult problem, realizes one-shot forming, improves quality and the fatigue life of irregular complex profiled member, thereby a kind of automobile load-sensing proportion valve support punch forming process is provided.
Two of purpose of the present invention is to provide a kind of automobile load-sensing proportion valve support punch-forming mold, can be to the one-shot forming of automobile load-sensing proportion valve support.
One of purpose of the present invention is achieved in that increasing technique on the product original base stays long and the difficult problems such as fabrication hole is located to solve one-shot forming, race material, again technique is stayed long position to cut off after completing one-shot forming, obtain the product of required form, established technology is: blanking-blanking-rush Gong Yi Kong – Cheng Xing – cut off (technique stays long) – to rush pilot hole:
(1) blanking: according to material, thickness and the shape of converted products, analysis and calculation goes out the billet size that workpiece adopts one-shot forming technique to have, and maximizes to determine the blanking trimming value according to availability ratio of the armor plate, obtains plate blanking width;
(2) blanking: determine the process of Workpiece shaping front road concerned process steps, and determine that according to the requirement of stock layout layout, molding procedure technique stays long position and size, finally obtain blanking size;
(3) rush fabrication hole: according to the location needs of Workpiece shaping, go out the positioning process hole of molding procedure with the perforating die punching;
(4) moulding:
At first, design shape, size and the pressing direction of moulding punch and matrix; Stay long cut-out mode to determine shape, size and the pressing direction of punch and matrix according to size, profile, surface quality requirement, forming height, the technique of processing work;
Then, determine the locate mode of workpiece, just determine the positioning datum of molding procedure and the locate mode of taking in conjunction with the punching operation;
Then, determine ejecting structure and the mode of product, given shape according to product, after whole molding concave die is processed simultaneously, with die bottom circular arc line line cutting and separating out, become the movable form of inserting, it can well be slided in whole solid shaped cavity, have simultaneously die and jacking block function; In addition, when considering moulding, the positioning process hole, can distortion in pressing process on complex-curved, causes the feeding difficulty, upper shop bolt should be made ejector pin therefore will insert, below pre-shock mount, like this, before product compacting, ejector pin is in the state of ejecting, and makes the product can good location; After product compacting puts in place, ejector pin by on be molded into insert in and break away from product, take out product; At last, determine processing technology and the assembly technical requirement of punch and matrix, in order to complete whole product forming process;
(5) cut off: according to workpiece product figure profile, will stay long excision because of the technique that moulding needs to increase;
(6) rush pilot hole: welding position and reference for assembling according to workpiece product diagram technology requires go out the product pilot hole with the perforating die punching.
Two of purpose of the present invention is achieved in that mould is to take " increase technique and stay long and fabrication hole " locate mode to realize that complex-curved upper two pin-and-holes are located, its positioning datum is located at the loose plug peak, can avoid well blank play and cause the phenomenons such as product is monolateral during moulding on complex-curved, the design principle of mould pressing direction contacts product simultaneously for guaranteeing left and right two salient points of punch.
A kind of automobile load-sensing proportion valve support punch-forming mold, its minute upper die and lower die, comprise cope match-plate pattern, punch, lower bolster, die block, guide pillars and bushes, counterdie divides fixation kit and movable component, described fixation kit comprises die block and die plate insert, die plate insert is squeezed into the solid shaped cavity that forms in the lock chamber of die block by interference fit, die block and lower bolster are bolted on lower bolster, and die plate insert is connected with lower bolster by bolt; Movable component comprises moulding top board, cushion block and push rod, the moulding top board be connected with cushion block and both and fixedly the shape cavity gap be connected, push rod is placed on cushion block below, push rod passes lower bolster and lower bolster, passes straight through to the lathe plunger tip.
The moulding top board is provided with locating hole, in the locating hole of alignment pin burying forming top board and be slidably connected with locating hole is spacing, and the spring of packing in the locating hole of alignment pin below, the spring lower end is connected with the cushion block upper surface.Alignment pin exceeds moulding cover top surface 3.0mm.
Patrix comprises punch, upper padding plate, cope match-plate pattern and guide pin bushing, and punch is connected bolt and is connected with cope match-plate pattern with upper padding plate, and the guide pin bushing interference fit is fixed in dowel hole corresponding to cope match-plate pattern, and the left salient point of punch and two salient points of right salient point are in the same horizontal line.
The circular arc peak of moulding top board is the mould molding angle, and when push rod pushed up to peak, the moulding top board was higher than the upper surface of die plate insert.
Monolateral gap between fixation kit and movable component is 0.18-0.22mm; The forming surface gap of the forming surface of punch 5 and die plate insert is 2.60-2.70mm, namely is controlled at except material thickness in the 0.10-0.20mm scope.
The present invention adopts this punch machining process, after the mould one-shot forming, sustainable stable guarantee product design size and serviceability all reach requirement, promote production capacity, reduce production costs, improve the anti-fatigue life of product, improve product quality, product appearance is good, satisfies the design and use requirement fully.
Description of drawings
Fig. 1 is the main TV structure schematic diagram of the embodiment of the present invention 1 opening.
Fig. 2 is the plan structure schematic diagram of the embodiment of the present invention 1 opening.
Fig. 3 is the main TV structure schematic diagram of the embodiment of the present invention 1 impaction state.
Fig. 4 is the plan structure schematic diagram of the embodiment of the present invention 1 impaction state.
Fig. 5 is existing SABS support process schematic representation.
Fig. 6 is the embodiment of the present invention 1 process schematic representation.
In figure: guide pillar 1, guide pin bushing 2, cope match-plate pattern 3, upper padding plate 4, punch 5, alignment pin 6, SABS support 7, die plate insert 8, die block 9, moulding top board 10, cushion block 11, spring 12, push rod 13, lower bolster 14, lower bolster 15, left salient point 16, right salient point 17.
The specific embodiment
Embodiment 1: the SABS support is as example in the processing daily output C16A of our company torsion beam:
Daily output C16A SABS rack forming mould is to take " increase technique and stay long and fabrication hole " locate mode to realize that complex-curved upper two pin-and-holes are located, its positioning datum is located at the peak of loose plug, can avoid well blank on complicated, irregular curved surface during moulding because play causes the phenomenons such as product is monolateral, SABS rack forming mould mould structure is as shown in Fig. 1-4:
The upper die structure relation is: punch 5, upper padding plate 4 are arranged on cope match-plate pattern 3 by order illustrated by bolt, and one reinstates holding pin and fixes; Guide pin bushing 2 interference fit are squeezed in the dowel hole that is fixed on cope match-plate pattern 3 correspondences.
The lower die structure relation is: die block 9, lower bolster 14 are bolted on lower bolster 15, and fixing together with steady pin; Die plate insert 8 interference fit are squeezed into the solid shaped cavity that forms in the lock chamber of die block 9, and are connected with lower bolster 14 by bolt; In the locating hole of alignment pin 6 burying forming top boards 10, and the spring 12 of packing into, be bolted together with cushion block 11 again, form the comprehensive movable component that integrates location, moulding, liftout, after assembly fixes, guarantee that alignment pin 6 exceeds moulding top board 10 upper surface 3.0mm, can be movable downwards when alignment pin 6 is subjected to force compresses, movable component is placed in the solid shaped cavity of the fixation kit that is formed by die plate insert 8 and die block 9 by matched in clearance; Push rod 13 is placed on cushion block 11 belows, and passes lower bolster 14 and lower bolster 15, passes straight through to the lathe plunger tip; Guide pillar 1 interference fit is squeezed into and is fixed on lower bolster 15.When assemble the upper and lower part of above-mentioned mould, need to guarantee that left and right two salient points of punch 5 are at same level height (as Fig. 1).Punch 5 is controlled at except material thickness in the 0.1-0.15mm scope with the gap, composition surface of die plate insert 8.Moulding top board 10 and cushion block 11 assemblies can be in the solid shaped cavity that counterdie forms easy on and off movable, and when push rod 13 pushed up to peak, moulding top board 10 was higher than the upper surface of die plate insert 8.
Monolateral gap between fixation kit and movable component is 0.18-0.22mm; The forming surface gap of the forming surface of punch 5 and die plate insert 8 is 2.60-2.70mm, namely is controlled at except material thickness in the 0.10-0.20mm scope.
Moulding process is as follows as shown in Figure 6:
(1), blanking: according to material 08, thickness 2.5mm and each dimensional requirement of moulding of SABS support in Zhengzhou daily output C16A torsion beam, analysis and calculation goes out Workpiece shaping needs billet size, again according to the stock layout layout of blanking operation, determine the scrap (bridge) surplus, draw at last the product blank size.
(2), blanking: the process of determining Workpiece shaping operation front road concerned process steps is blanking size.Stay long size (20 * 48) to carry out the plate cae analysis by forming shape and technique, tentatively obtain the product development size, then finally determine the development size by on-the-spot actual tests.
(3), punching: the location needs according to daily output C16A SABS rack forming, stay long centre position to go out the hole of 2 φ 8.6+0.10 0 with perforating die in technique, be convenient to make positioning datum in molding procedure.
(4), moulding: at first, design shape, size and the pressing direction of moulding punch and matrix.Daily output C16A SABS rack forming punch adopts global shape, and except forming surface, other are regular cuboid, and the moulding position draws according to shape of product.According to forming height, angle, technique is stayed long and the locate mode requirement, circular arc R 7 positions is made as the peak of molding concave die, and moulding angle reasonable in design, and left and right two salient points that when guaranteeing compacting, punch contacts product contact product (as shown in Figure 1) simultaneously.Molding concave die is processed into profile according to shape of product, and each face is got suitable fillet to facilitate Material Flow according to forming direction.Then determine location and the pushing method of making, because of moulding location and head part needs, mould the latter half is designed a movable component, for this reason, molding concave die is split along circular arc tangential line, part interference is fixed in die block (as die plate insert 8), another part coordinates push rod easy on and off movable (as moulding top board 10) in the solid shaped cavity of counterdie, hole site according to product on the moulding top board processes dowel hole and spring eye, and be connected with cushion block, location, moulding, liftout effect are played in combination.At last, determine processing technology and the assembly technical requirement of punch and matrix.Punch and matrix divides mould to draw according to product 3D shaping, and is come by the digital control processing of machining center integral body, guarantee that shape is identical, then the process line cuts die is divided into two (die plate insert, moulding top board).After assembling, the gap of punch and die plate insert forming surface guarantees to be 2.60mm, can be up and down in the moulding top board during alignment pin pressurized, and the monolateral gap in moulding top plate member and mould Lower Half fractal chamber is 0.20mm, and when push rod pushed up to peak, the moulding top board was higher than the die plate insert upper surface.
Before the product compacting, push rod with the moulding Roof to peak, then the product that punching is good is put into two alignment pins and is located, punch is descending with lathe, and left and right two salient points contact simultaneously product and continue suppresses complete moulding with product, and punch presses down the disengaging product with alignment pin, after moulding is completed, patrix is up with the lathe slide block, and push rod ejects moulding top board and product, can take out product.
(5), cut off (technique is stayed length): according to daily output C16A SABS support product figure profile, will locate because of moulding needs the interim technique that increases stay long (20 * 48) to excise.
(6) rush pilot hole: welding position and reference for assembling according to daily output C16A SABS support product diagram technology requires go out two pilot hole 2-φ 8 with the perforating die punching.
Such SABS support blanking, just can be directly used in the processing and forming of mould after rushing the fabrication hole operation.The 1st step: will produce C16A SABS rack forming mould daily and be arranged on the YB32-100 hydraulic press; The 2nd step: start hydraulic press, taking blame for others with lathe ejects push rod 13 and moulding top plate member, and ejection height is higher than die plate insert 8 upper surfaces; The 3rd step: will rush daily output C16A SABS stentplacement after the fabrication hole operation on the detent mechanism alignment pin 7 of mould, moulding top board 10; The 4th step: operation hydraulic press top shoe is descending, and left and right two salient points of punch 5 contact at first simultaneously daily output C16A SABS support and proceed compacting, and are on earth to be pressed, the complete moulding of product; The 5th step: the hydraulic press top shoe is up, and the upper part of driven mold breaks away from return, and taking blame for others under the operation lathe ejects push rod 13 and moulding top plate member, and product ejects with the moulding top plate member, and can take out the product that ejects this moment; The 6th step: repeating step 2 is to the operation of step 5.
Claims (7)
1. automobile load-sensing proportion valve support punch forming process, it comprises blanking, blanking, rushes fabrication hole, moulding, cut off and rush pilot hole, it is characterized in that moulding process is as follows:
At first, design shape, size and the pressing direction of moulding punch and matrix; Stay long cut-out mode to determine shape, size and the pressing direction of punch and matrix according to size, profile, surface quality requirement, forming height, the technique of processing work;
Then, determine the locate mode of workpiece, just determine the positioning datum of molding procedure and the locate mode of taking in conjunction with the punching operation;
Then, determine ejecting structure and the mode of product, given shape according to product, after whole molding concave die is processed simultaneously, with die bottom circular arc line line cutting and separating out, become the movable form of inserting, it can be slided in whole solid shaped cavity, have simultaneously die and jacking block function; In addition, when considering moulding, the positioning process hole, can distortion in pressing process on complex-curved, causes the feeding difficulty, therefore the upper shop bolt of inserting should be made ejector pin, below pre-shock mount, like this, before the product compacting, ejector pin is in the state of ejecting; After product compacting puts in place, ejector pin by on be molded into insert in and break away from product, take out product; At last, determine processing technology and the assembly technical requirement of punch and matrix, in order to complete whole product forming process.
2. automobile load-sensing proportion valve support punch-forming mold, its minute upper die and lower die, comprise cope match-plate pattern (3), punch (5), lower bolster (15), die block (9), guide pillar (1) and guide pin bushing (2), it is characterized in that counterdie divides fixation kit and movable component, described fixation kit comprises die block (9) and die plate insert (8), die plate insert (8) is squeezed into the solid shaped cavity that forms in the lock chamber of die block (9) by interference fit, die block (9) and lower bolster (14) are connected on lower bolster (15), die plate insert (8) is connected with lower bolster (14), movable component comprises moulding top board (10), cushion block (11) and push rod (13), moulding top board (10) be connected with cushion block (11) and both and fixedly the shape cavity gap be connected, push rod (13) is placed on below cushion block (11), push rod (13) passes lower bolster (14) and lower bolster (15), passes straight through to the lathe plunger tip.
3. a kind of automobile load-sensing proportion valve support punch-forming mold according to claim 2, it is characterized in that described moulding top board (10) is provided with locating hole, in the locating hole of alignment pin (6) burying forming top board (10) and be slidably connected with locating hole is spacing, the spring (12) of packing in the locating hole of alignment pin (6) below, spring (12) lower end is connected with cushion block (11) upper surface.
4. a kind of automobile load-sensing proportion valve support punch-forming mold according to claim 2, it is characterized in that described patrix comprises punch (5), upper padding plate (4), cope match-plate pattern (3) and guide pin bushing (2), punch (5) is connected 4 with upper padding plate) be connected with cope match-plate pattern (3), guide pin bushing (2) interference fit is fixed in dowel hole corresponding to cope match-plate pattern (3), and the left salient point (16) of punch (5) and two salient points of right salient point (17) are in the same horizontal line.
5. a kind of automobile load-sensing proportion valve support punch-forming mold according to claim 2, the circular arc peak that it is characterized in that described moulding top board (10) is the mould molding angle, and when push rod (13) pushed up to peak, moulding top board (10) was higher than the upper surface of die plate insert (8).
6. a kind of automobile load-sensing proportion valve support punch-forming mold according to claim 2, is characterized in that the monolateral gap between described fixation kit and movable component is 0.18-0.22mm; The forming surface gap of the forming surface of punch (5) and die plate insert (8) is controlled at except material thickness in the 0.1-0.15mm scope.
7. a kind of automobile load-sensing proportion valve support punch-forming mold according to claim 3, is characterized in that described alignment pin (6) exceeds moulding top board (10) upper surface 3.0mm.
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| CN107150211A (en) * | 2017-07-11 | 2017-09-12 | 淮阳县新华食品机械厂 | It is a kind of to connect dress toast box and its processing technology more |
| CN109048218A (en) * | 2018-08-21 | 2018-12-21 | 内蒙古第机械集团股份有限公司 | The cold stamping method of armour steel revolution bodily form shell conical part |
| CN110369583A (en) * | 2019-07-05 | 2019-10-25 | 东莞理工学院 | A kind of intensity adjustable block insert type hot stamping forming die |
| CN112139327A (en) * | 2020-09-18 | 2020-12-29 | 中国航发贵州黎阳航空动力有限公司 | Machining method and machining device for reverse structure hole |
| CN112496165A (en) * | 2020-10-06 | 2021-03-16 | 湖北超卓航空科技股份有限公司 | Lower die structure and clamp circular arc forming die |
| CN112605235A (en) * | 2020-12-25 | 2021-04-06 | 成都宏明双新科技股份有限公司 | Molding die integrating tearing and molding |
| CN114951451A (en) * | 2022-08-01 | 2022-08-30 | 成都市鸿侠科技有限责任公司 | Hot forming die |
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