CN202114158U - Ultra-thick composite punching die - Google Patents
Ultra-thick composite punching die Download PDFInfo
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- CN202114158U CN202114158U CN2011201814831U CN201120181483U CN202114158U CN 202114158 U CN202114158 U CN 202114158U CN 2011201814831 U CN2011201814831 U CN 2011201814831U CN 201120181483 U CN201120181483 U CN 201120181483U CN 202114158 U CN202114158 U CN 202114158U
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- die
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- fixed
- cut
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- 238000004080 punching Methods 0.000 title abstract description 23
- 239000002131 composite materials Substances 0.000 title abstract 3
- 238000005242 forging Methods 0.000 claims abstract description 40
- IJGRMHOSHXDMSA-UHFFFAOYSA-N nitrogen Chemical compound data:image/svg+xml;base64,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 data:image/svg+xml;base64,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 N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 11
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 11
- 239000001308 nitrogen Substances 0.000 claims abstract description 11
- 150000001875 compounds Chemical class 0.000 claims description 28
- 240000006028 Sambucus nigra Species 0.000 claims description 5
- 230000037250 Clearance Effects 0.000 claims description 4
- 230000035512 clearance Effects 0.000 claims description 4
- 239000002585 bases Substances 0.000 claims description 2
- 238000000034 methods Methods 0.000 abstract description 11
- 238000005516 engineering processes Methods 0.000 abstract description 6
- 238000009966 trimming Methods 0.000 abstract description 5
- 240000001307 Myosotis scorpioides Species 0.000 abstract description 2
- 238000005056 compaction Methods 0.000 abstract 1
- 238000007493 shaping process Methods 0.000 description 5
- 238000007599 discharging Methods 0.000 description 4
- 238000003754 machining Methods 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 238000005520 cutting process Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 239000011324 beads Substances 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 230000001939 inductive effects Effects 0.000 description 2
- 241000219098 Parthenocissus Species 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000000875 corresponding Effects 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006011 modification reactions Methods 0.000 description 1
- 230000002093 peripheral Effects 0.000 description 1
Abstract
Description
Technical field
The utility model discloses a kind of ultra thick compound die-cut mould; Divide by International Patent Classification (IPC) (IPC) and to belong to mould design class manufacturing technology field, especially relate to a kind of engineering machinery with the requirement of straight hole straight flange ultra thick compound blanking units with the track link rail hot forging.
Background technology
The track link rail forging is the requisite major part of caterpillar engineering vehicles driving system, and the crawler belt of every vehicle need use the chain rail to save general more than 200, and consumption is mutually big, and track link rail one side is connected through screw with creeper tread; Opposite side is enclosed within on the driving wheel and rolls, and based on the requirement that realizes operation function, a side in track link rail both sides and middle two holes need be the plane; The plane roughness is less demanding; But because Forging Technology requires that the depanning gradient must be arranged, so this forging just can remove draft angle by the follow-up machining of the no exception needs of conventional machining process and form the plane, finally reaches product requirement; But chain rail joint thickness reaches 50mm; The not only numerous and diverse effort of also taking a lot of work of machined, processing make product cost high, and the competitiveness of product in market has received bigger restriction.
Total going up analyzed; Track link rail forging conventional machining process is handled the forging draft angle; Its cost is quite high; Thereby further seek can handle the forging draft angle again not increasing manufacturing procedure, be to reduce the product cost best method, also be the important R&D direction that engineers and technicians are duty-bound.
Summary of the invention
Deficiency to prior art; The utility model provides a kind of production efficiency high ultra thick compound die-cut mould; This device can the disposable completion past punching operation, the operation of cutting edge, mill the both sides operation, draw plane, two holes operation, significantly reduce track link rail forging cost.
For achieving the above object, the utility model is realized through following technical scheme:
A kind of ultra thick compound die-cut mould; Comprise upper bolster, die shoe, trim die, punch-die, punch-head assembly and pressure die; Cooperate disposable completion chain rail joint hot forging punching side cut operation through above-mentioned each member, wherein said upper and lower die holder is combined into high-accuracy mould bases guide frame by the guide pillar guiding that is connected and with the intermediate active template, and described pressure die is fixed in upper bolster through movable pressure plate; Punch-head assembly is fixed in upper bolster and cooperates guiding by pressure die; Trim die is fixed in the intermediate active template, and the intermediate active template is through the guide pillar guiding and be fixed in upper bolster, and punch-die is connected and fixed on die shoe.
Further, this compound die-cut mould also comprises stripper, and it floats with die shoe through pull bar, spring and is connected.
Further, described upper bolster adopts four guide pillars and the guide pin bushing that matches and the accurate guiding of die shoe, and this upper bolster is evenly distributed with 6 nitrogen spring compactors and forms stable high pressure and compress hot forging through movable pressure plate.
Further, described movable pressure plate is by guide rod, guide pin bushing guiding, and wherein guide rod is fixed in upper bolster.
Further, described intermediate active template leads through guide pillar between the upper and lower die holder and guide pin bushing precision, and is fixed in upper bolster by pull bar.
Further, the gap of the drift of said punch-head assembly and punch-die internal chamber wall is 0.8～1.0 mm, and punch-die outer wall and trim die internal chamber wall gap are 0.6～0.8 mm.
The ultra thick compound die-cut mould of the utility model; To being applied to need punching operation, the operation of cutting edge, milling the both sides operation, drawing the track link rail forging of plane, two holes operation; Utilize the nitrogen spring compactor effectively to compress hot forging and cooperate rational blade clearance to carry out disposable precision compound (slab) punching and shaping, reach the machined surface quality of the final technological requirement of product.
The utility model original punching operation, the operation of cutting edge, mill the both sides operation, draw plane, two holes operation; Four operations integrate; By the accurate ultra thick compound die-cut mould of the present invention, cooperate repeatedly reasonable blade clearance (Figure 10) disposable (slab) punching and shaping of practice summary of warp, reduced operation; Corresponding minimizing equipment, personnel etc., the production flow process shortens, and middle reproduced goods reduce, obvious economic.
Description of drawings
Fig. 1 is a untouched edge track link rail forging drawing.
Fig. 2 is Fig. 1 side view.
Figure 3 is a Pu-technology punching forging Figure crawler track links.
Fig. 4 is Fig. 3 side view.
Figure 5 is Pu Tong craft punching, trimming crawler track link forging map.
Fig. 6 is Fig. 5 side view.
Fig. 7 is the disposable punching and shaping track link rail of a utility model forging drawing.
Fig. 8 is Fig. 7 side view.
Fig. 9 is the utility model sketch map.
Figure 10 is the utility model punching, side cut gap sketch map.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is described further:
Embodiment: the ultra thick compound die-cut mould of the utility model track link rail hot forging, to the track link rail forging that is applied to have the requirement of straight hole straight flange, it is accomplished in regular turn and comprises blank Frequency Induction Heating operation; Flattening process; The finish-forging operation; Accurate compound die-cut operation; Described ultra thick compound die-cut operation is to utilize the nitrogen spring hold down gag; Carry out disposable compound punching and shaping technology, excise draft angle (slab stamping-out) fully, reach the plane that the straight hole straight flange satisfies the final technological requirement of track link rail forging products part.
The utility model offers the object that ultra thick compound die-cut mould is directed against in the specific implementation, mainly be by circular bar through Frequency Induction Heating to forging temperature; Through hot die forging press flattening, finish-forging, resulting track link rail hot forging band overlap gross weight is like Fig. 1, shown in Figure 2; This track link rail hot forging by common process is: punching such as Fig. 3 and shown in Figure 4, cut edge like Fig. 5 and shown in Figure 6, and the F1 that marks, F2, F3, F4 are the draft angle that common clicking technique is left among the figure; Need just can reach product requirement through machined; Like Fig. 7 and shown in Figure 8, obviously need increase equipment, manpower etc., increase product cost.So the ultra thick compound die-cut mould of the present invention, provides a kind of precision die efficient, easy and that can significantly reduce cost to this defective.Particularly, the accurate ultra thick compound die-cut mould of design one cover is as shown in Figure 9 on clipping press, carries out disposable compound punching and shaping, both can reach the processing plane of product requirement; Like Fig. 7 and shown in Figure 8, the smart ultra thick compound die-cut mould of the present invention, it comprises upper and lower die holder 3,19, trim die 18, punch-die 17, punch-head assembly 8, pressure die 7, stripper 16; Movable pressure plate 6, intermediate active template 11, pressure strip guide rod 4, collapsible form pull bar 10; Pressure strip guide pin bushing 5, collapsible form guide pin bushing 12 is turned round post 2, guide pin bushing; 1 discharging fixed head 13, stripper pull bar 14, spring 15; And nitrogen spring 9 etc., constituting a whole set of high-accuracy ultra thick compound die-cut mould, above-mentioned guide pillar also can be described as guide shaft.
A whole set of mould assembles wherein pressure die 7 and connects backing plates and be fixed on the movable pressure plate 6, through guide pin bushing 5 guide rods 4 guiding, is compressed by nitrogen elastic compression device 9; Nitrogen spring 9 is fixed on the upper bolster 3.Punch-head assembly 8 is fixed on the upper bolster 3, guiding in pressure die 7.Trim die 18 is fixed on the intermediate active template 11, and intermediate active template 11 is turned round post 2 guiding through guide pin bushing 1, and is fixed on the upper bolster 3 by pull bar 10.On die shoe 19, stripper 16 is fixed on the discharging fixed head 13 punch-die 17 through shim, and discharging fixed head 13 is spacing by pull bar 14, and pull bar 14 is fixed on the die shoe 19, and spring 15 is used for discharging and ejects.
In practical application, will forge back track link rail hot forging 20, be placed on the punch-die 17; Move downward with the bead cutter slide block; Pressure die 7 at first contacts with hot forging 20, continues to move down the piston pressurized of nitrogen spring 9 with patrix; Pressure acts on the hot forging 20 through movable pressure plate 6 and pressure die 7, and the nitrogen spring unit pressure can reach 18Mpa; Enough big pressure with forging 20 by step steadily advance compress after, be contained in punch-head assembly 8 and punch-die 17 on the upper bolster 3 at first accomplish punching and then along with patrix continue descending, trim die 18; Punch-die 17 has been accomplished peripheral side cut again.This moment, slide block began backhaul, up along with patrix, and pressure die 7 keeps enough pressure to hot forging 20 all the time, up to punch-head assembly 8 trim dies 18; After leaving forging 20, pressure die 7 just breaks away from forging 20.This moment, stripper 16 was released disengaging punch-die 17 with overlap under the effect of spring 15; Gross weight falls into die shoe 19 already after punching, released by the hole that open front and back, and whole die-cut operation finishes, and the drift of punch-head assembly and punch-die punch clearance are 0.8～1.0 mm among Figure 10, and punch-die outer wall and trim die side cut gap are 0.8～1.0 mm.
More in depth, hot die forging press is forged good track link rail hot forging such as Fig. 1 and shown in Figure 2, directly put on the ultra thick compound die-cut mould punch-die, with the bead cutter slide block down, pressure die is after exerting pressure to hot forging under the effect of nitrogen spring; And then punching, side cut patrix backhaul stripper eject overlap, accomplish a series of actions, obtain at last having satisfied product requirement like Fig. 7 and forging shown in Figure 8.Fig. 2 to Fig. 6 is common punching, side cut sketch map; F1, F2, F3, the common just clicking technique of F4 dash area fail to excise draft angle; Also be that the accurate ultra thick compound die-cut mould of the present invention has promptly been integrated punching operation, side cut operation and saved milling two plane operations and drawing plane, two holes operation of follow-up machining again, effect is remarkable; Also be the accurate guiding of the present invention, high pressure and pressure stable is accomplished the blanking die in the die-cut high-quality cross section of slab.
The above record is merely the embodiment that utilizes this origination techniques content, anyly is familiar with modification, the variation that this creation of this art utilization is done, and all belongs to the claim of this creation opinion, and is not limited to embodiment announcement person.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201814831U CN202114158U (en) | 2011-05-31 | 2011-05-31 | Ultra-thick composite punching die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201814831U CN202114158U (en) | 2011-05-31 | 2011-05-31 | Ultra-thick composite punching die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202114158U true CN202114158U (en) | 2012-01-18 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201814831U CN202114158U (en) | 2011-05-31 | 2011-05-31 | Ultra-thick composite punching die |
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| CN (1) | CN202114158U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527820A (en) * | 2012-01-19 | 2012-07-04 | 宁波久腾车灯电器有限公司 | Aluminum alloy die casting piece trimming die with smooth cut |
| CN102601241A (en) * | 2012-03-31 | 2012-07-25 | 重庆至信实业有限公司 | Blanking die for rear beam of automobile front floor |
| CN103448287A (en) * | 2012-06-01 | 2013-12-18 | 山东奥德堡电梯有限责任公司 | Die frame suitable for mechanical crankshaft type press machine |
| CN103480730A (en) * | 2012-06-13 | 2014-01-01 | 江苏龙城精锻有限公司 | Claw pole red trimming and punching compound die frame |
| CN109663876A (en) * | 2017-10-14 | 2019-04-23 | 辽宁五八内燃机配件有限公司 | A kind of edge-cutting and hole-punching correcting combined die and its application method suitable for forging automatic production line |
| CN110102631A (en) * | 2019-06-03 | 2019-08-09 | 遵义航天新力精密铸锻有限公司 | Superthin structure non-ferrous metal nearly shaped component edge grinding buster only |
-
2011
- 2011-05-31 CN CN2011201814831U patent/CN202114158U/en not_active IP Right Cessation
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102527820A (en) * | 2012-01-19 | 2012-07-04 | 宁波久腾车灯电器有限公司 | Aluminum alloy die casting piece trimming die with smooth cut |
| CN102601241A (en) * | 2012-03-31 | 2012-07-25 | 重庆至信实业有限公司 | Blanking die for rear beam of automobile front floor |
| CN103448287A (en) * | 2012-06-01 | 2013-12-18 | 山东奥德堡电梯有限责任公司 | Die frame suitable for mechanical crankshaft type press machine |
| CN103480730A (en) * | 2012-06-13 | 2014-01-01 | 江苏龙城精锻有限公司 | Claw pole red trimming and punching compound die frame |
| CN109663876A (en) * | 2017-10-14 | 2019-04-23 | 辽宁五八内燃机配件有限公司 | A kind of edge-cutting and hole-punching correcting combined die and its application method suitable for forging automatic production line |
| CN110102631A (en) * | 2019-06-03 | 2019-08-09 | 遵义航天新力精密铸锻有限公司 | Superthin structure non-ferrous metal nearly shaped component edge grinding buster only |
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| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EXPY | Termination of patent right or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120118 Termination date: 20150531 |