CN202291189U - Bevel gear cold precision forging mould - Google Patents
Bevel gear cold precision forging mould Download PDFInfo
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- CN202291189U CN202291189U CN2011203996105U CN201120399610U CN202291189U CN 202291189 U CN202291189 U CN 202291189U CN 2011203996105 U CN2011203996105 U CN 2011203996105U CN 201120399610 U CN201120399610 U CN 201120399610U CN 202291189 U CN202291189 U CN 202291189U
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Abstract
一种锥齿轮冷精锻模具，包括凸模机构和凹模机构，所述凸模机构由上模板、凸模垫块、凸模压圈和凸模组成，凸模与凸模压圈固定连接，所述凸模压圈固定在凸模垫块上，凸模压圈与上模板固定连接，所述上模板与压力机联动；所述凹模机构由凹模压圈、凹模镶块、凹模垫块、下模板以及顶料杆组成，凹模压圈与用以放置待加工坯料的凹模镶块过盈配合装配，所述凹模压圈、凹模镶块固定在凹模垫块上，所述凹模压圈、凹模垫块与下模板固定连接；顶料杆依次穿过下模板、凹模垫块的中部通孔；所述上模板或下模板可上下滑动地套装在导柱上。本实用新型生产效率较高、减少材料浪费、降低成本、提升力学性能。
A bevel gear cold precision forging die, comprising a punch mechanism and a die mechanism, the punch mechanism is composed of an upper template, a punch pad, a punch ring and a punch, the punch is fixedly connected to the punch ring, the The punch ring is fixed on the punch pad, the punch ring is fixedly connected to the upper template, and the upper template is linked with the press; the die mechanism is composed of a die ring, a die insert, a die pad, The lower template and the ejector rod are composed of the die press ring and the die insert for placing the blank to be processed in an interference fit assembly, the die press ring and the die insert are fixed on the die pad, the die press The ring, the die cushion block are fixedly connected with the lower formwork; the ejector rod passes through the middle through hole of the lower formwork and the die cushion block in turn; the upper formwork or the lower formwork can be slid up and down and set on the guide column. The utility model has higher production efficiency, reduces waste of materials, reduces costs and improves mechanical properties.
Description
Technical field
The utility model relates to the bevel gear processing mold.
Background technology
Traditional gear working method mainly contains gear hobbing, gear shaping, shaving, the tooth that spreads out, roll flute, gear lapping and throwing tooth etc.The main feature of these methods is, adopts comparatively accurate machining tool, owing to be machine cut processing, tooth-formation of gear can not be accomplished processing by lathe in a work step, and production efficiency is lower, is unfavorable for the mass production of bevel gear; In process, since shear action, the waste that will inevitably bring material, and especially for the material of costliness, material cost is inevitable sharply to be increased; Its inner metal fibrous tissue of crude raw material is that nature is continuous, has mechanical property preferably, and through machined; Will inevitably cut off metal fibrous tissue; Thereby reduce the mechanical property of processed finished products, at the profile of tooth shaping, this effect is particularly evident.
In recent years, rapid development of automobile industry makes market sharply increase parts demand with low cost, function admirable.Highlighted the defective of existing bevel gear processing.
Summary of the invention
In order to overcome the deficiency that production efficiency is lower, waste of material is big, cost is higher, mechanical property is relatively poor that existing bevel gear adopts the machine cut processing mode to exist, the utility model provide a kind of production efficiency higher, reduce waste of material, reduce cost, promote the bevel gear cold closed-die forging mould of mechanical property.
The utility model solves the technical scheme that its technical problem adopted:
A kind of bevel gear cold closed-die forging mould; Comprise punch mechanism and die mechanism; Said punch mechanism is made up of cope match-plate pattern, punch cushion block, punch trim ring and punch, and punch is fixedly connected with the punch trim ring, and said punch trim ring is fixed on the punch cushion block; The punch trim ring is fixedly connected with cope match-plate pattern, said cope match-plate pattern and forcing press interlock; Said die mechanism is made up of die trim ring, die plate insert, die cushion block, lower bolster and ejector beam; The die trim ring with in order to place the die plate insert interference fit of blank to be processed; Said die trim ring, die plate insert are fixed on the die cushion block, and said die trim ring, die cushion block are fixedly connected with lower bolster; Ejector beam passes the middle part through hole of lower bolster, die cushion block successively; Said cope match-plate pattern or lower bolster can slide up and down to be sleeved on the guide pillar.
Further, said punch mechanism comprises the upper support circle, and said die mechanism comprises the lower support circle, and said upper support circle is fixedly connected with punch trim ring, cope match-plate pattern respectively, and said lower support circle is fixedly connected with die trim ring, lower bolster respectively.
The technical conceive of the utility model is: the development of cold closed-die forging technology has just in time remedied the demand of auto industry.Cold closed-die forging changes the volume distributed median of blank under the prerequisite of not destroying metal material, the material transfer that blank is unnecessary obtains required molded component to the position that needs to be shaped, thereby does not have the cutting loss, saves cost.Because drip molding can obtain finished product through two to three process by cold closed-die forging basically, production efficiency is improved.And cold closed-die forging processing only relates to plastic deformation, can not cut off the fibr tissue that metal forms naturally, has improved the mechanical property of finished product.
The complexity that bevel gear is shaped is that the deformation degree of profile of tooth shaping is comparatively violent; The deformation limit of once pushing considerably beyond material; If force to go out gear through the mode upsetting squeeze of a cold closed-die forging, the drip molding that its upsetting squeeze goes out will certainly occur the profile of tooth forming accuracy low with defectives such as profile of tooth is not full, simultaneously the equipment extruding force is required high; The mould loss is big, causes its lost of life.Good technological design can address these problems, and arranges the preprocessing operation as before the cold closed-die forging operation, processes the blank that is fit to shaping in advance; One cold closed-die forging operation is decomposed into two procedures, reduces the burden of per pass operation; Between twice cold closed-die forging operation, adopt spheroidizing to handle blank, improve material property.The utility model layout the technological measure of suitable cold closed-die forging bevel gear; Cooperate the bevel gear mould design of two-layer combined die; Its drip molding has that mechanical property is good, dimensional accuracy is high, the advantage relatively low to the equipment load requirement, is suitable for the production in enormous quantities of bevel gear.
The beneficial effect of the utility model mainly shows: (1) adopts two procedures to come the crush cones gear; And the identical mould of this two procedures employing, its difference is the difference that punch stroke is set, thereby when reducing extruding force and reducing device requirement, has practiced thrift die cost; (2) bevel gear direct upsetting extrusion under cold conditions, extrusion dense structure, grain refinement, mechanical property is high, and dimensional accuracy is high, and surface quality is good; (3) mould structure is simple, and is easily manufactured, and mould parts is changed convenient, and cost is lower, is fit to produce in enormous quantities.
Description of drawings
Fig. 1 is the vertical view of mould bases.
Fig. 2 is the mould bases structural representation.
Fig. 3 uses the blank sketch map for the cold closed-die forging bevel gear that obtains after the machining certain taper.
The target shaping bevel gear sketch map that Fig. 4 obtains for cold closed-die forging.
The bevel gear finished product sketch map of Fig. 5 for obtaining after the machined.
The specific embodiment
Below in conjunction with accompanying drawing the utility model is further described.
With reference to Fig. 1～Fig. 5; A kind of bevel gear cold closed-die forging mould, said mould comprises punch mechanism and die mechanism, said punch mechanism is made up of cope match-plate pattern 1, punch cushion block 2, punch trim ring 4 and punch 5; Punch 5 is fixedly connected with punch trim ring 4; Said punch trim ring 4 is fixed on the punch cushion block 2, and punch trim ring 2 is fixedly connected with cope match-plate pattern 1, said cope match-plate pattern 1 and forcing press interlock; Said die mechanism is made up of die trim ring 7, die plate insert 8, die cushion block 9, lower bolster 10 and ejector beam 11; Die trim ring 7 and die plate insert 6 interference fit in order to place blank 6 to be processed; Said die trim ring 7, die plate insert 8 are fixed on the die cushion block 9, and said die trim ring 7, die cushion block 9 are fixedly connected with lower bolster 10; Ejector beam 11 passes the middle part through hole of lower bolster 11, die cushion block 9 successively; Said cope match-plate pattern 1 or lower bolster 10 can slide up and down to be sleeved on the guide pillar.
Further, said punch mechanism comprises upper support circle 3, and said die mechanism comprises the lower support circle, and said upper support circle 3 is fixedly connected with punch trim ring 4, cope match-plate pattern 1 respectively, and said lower support circle is fixedly connected with die trim ring 7, lower bolster 10 respectively.
Whole mould bases is as shown in Figure 2, and hexagon-headed bolt and hex nut are fixed together punch 5 and punch cushion block 2 and cope match-plate pattern 1, and punch cushion block 2 plays the effect of buffering punch 5 suffered immense pressures, reduces the destruction to cope match-plate pattern 1.Support ring 3 plays the effect of protection cope match-plate pattern.Cope match-plate pattern 1, lower bolster 10 can be fastened to equipment through construction bolt around template with connecting of press equipment and realize.The guiding of mould bases through with guide column sleeve at cope match-plate pattern 1, lower bolster 10, realize in upper and lower support ring and two punch trim rings 4, the die trim ring 7.Hexagon-headed bolt 12 and hex nut are fixed together punch trim ring 7, lower support circle and lower bolster 10, prevent in the cold closed-die forging process each part of mould bases play up and down.Die plate insert 8 adopts interference fit with die trim ring 7, prevents that tension from appearring in die plate insert.Die plate insert adopts carbide alloy to increase the mould strength raising life-span, and the die trim ring adopts structural alloy steel to take into account economy, is convenient to simultaneously change.Ejector beam 11 adopts matched in clearance with die cushion block 9, destroys both metal surfaces in order to avoid occur friction in the course of work.
Because die plate insert 8 adopts Hardmetal materials, tension should not occur in the upsetting squeeze process.Therefore die is designed to two-layer combined die, die trim ring 7 and die plate insert 8 apply prestressing force through this mode to die plate insert with interference fit; The tension that produces during with the counteracting upsetting squeeze makes die plate insert 8 be in compressive stress state always, increases its life-span; Die trim ring material 7 material adopt alloy tool steel simultaneously; Reduce cost,, be convenient to simultaneously change to take into account economy.
The mould of present embodiment is applied to bevel gear cold closed-die forging technology, and said bevel gear cold closed-die forging technology may further comprise the steps:
1) adopts cylindrical bar shearing blanking;
2) turning goes out the preform of tapering as part on the blank partial-length, and said preform is located in die in order to blank;
3) blank after the machined is carried out spheroidizing to reduce its hardness, pickling descale then, phosphatization saponification lubricated;
4) the first road cold closed-die forging operation: upsetting squeeze part profile of tooth obtains first extrusion in extrusion die, and said first extrusion is as the blank of the second road cold closed-die forging operation;
5) said first extrusion is carried out spheroidizing once more, pickling scale removal then, phosphatization saponification lubricated;
6) the second road cold closed-die forging operation: upsetting squeeze goes out whole profiles of tooth in extrusion die, obtains the bevel gear coarse fodder;
7) said bevel gear coarse fodder is carried out the machined correction of the flank shape,, make the bevel gear finished product the excision of end face excess stock.
Preferably, the said first road cold closed-die forging operation is identical with the extrusion die that the second road cold closed-die forging operation adopts, and the punch stroke of the extrusion die of the second road cold closed-die forging operation is bigger than the punch stroke of the extrusion die of the said first road cold closed-die forging operation.
The cold closed-die forging bevel gear forming process of present embodiment is: the mould bases lower part is fixed on the hydraulic press lower table by lower bolster 10, after adjust on mould bases top, is fixed on the hydraulic press upper table by cope match-plate pattern 1.Choose the cylinder blank shearing blanking.At first with blank machining certain taper after put into concave die cavity after spheroidizing, pickling descale and the phosphatization saponification lubricated.Set the hydraulic press impulse stroke, punch 5 goes out the part profile of tooth with the blank upsetting squeeze then, obtains the cold closed-die forging spare of operation one.After extruding was accomplished, punch 5 withdrawed from concave die cavity, ejects the first procedure drip molding by ejector beam 11.This drip molding is put into concave die cavity again after spheroidizing, pickling descale and phosphatization saponification lubricated, configure impulse stroke, punch 5 upsetting squeeze again goes out whole profiles of tooth, obtains final drip molding, and is as shown in Figure 4.Extruding is accomplished, and punch 5 is withdrawed from concave die cavity.Final drip molding is done machined remove clout, obtain actual available bevel gear, as shown in Figure 5.
The above-mentioned specific embodiment is used for explaining the utility model; Rather than the utility model limited; In the protection domain of the spirit of the utility model and claim,, all fall into the protection domain of the utility model to any modification and the change that the utility model is made.
Claims (2)
1. bevel gear cold closed-die forging mould; It is characterized in that: said mould comprises punch mechanism and die mechanism; Said punch mechanism is made up of cope match-plate pattern, punch cushion block, punch trim ring and punch, and punch is fixedly connected with the punch trim ring, and said punch trim ring is fixed on the punch cushion block; The punch trim ring is fixedly connected with cope match-plate pattern, said cope match-plate pattern and forcing press interlock; Said die mechanism is made up of die trim ring, die plate insert, die cushion block, lower bolster and ejector beam; The die trim ring with in order to place the die plate insert interference fit of blank to be processed; Said die trim ring, die plate insert are fixed on the die cushion block, and said die trim ring, die cushion block are fixedly connected with lower bolster; Ejector beam passes the middle part through hole of lower bolster, die cushion block successively; Said cope match-plate pattern or lower bolster can slide up and down to be sleeved on the guide pillar.
2. mould as claimed in claim 1; It is characterized in that: said punch mechanism comprises the upper support circle; Said die mechanism comprises the lower support circle, and said upper support circle is fixedly connected with punch trim ring, cope match-plate pattern respectively, and said lower support circle is fixedly connected with die trim ring, lower bolster respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203996105U CN202291189U (en) | 2011-10-19 | 2011-10-19 | Bevel gear cold precision forging mould |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011203996105U CN202291189U (en) | 2011-10-19 | 2011-10-19 | Bevel gear cold precision forging mould |
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| Publication Number | Publication Date |
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| CN202291189U true CN202291189U (en) | 2012-07-04 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2011203996105U Expired - Fee Related CN202291189U (en) | 2011-10-19 | 2011-10-19 | Bevel gear cold precision forging mould |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430692A (en) * | 2011-10-19 | 2012-05-02 | 浙江工业大学 | Cold precision forging process for bevel gear and mould thereof |
| CN103433418A (en) * | 2013-07-03 | 2013-12-11 | 中国农业大学 | Precision forging device and method for spiral bevel gear |
| CN104385670A (en) * | 2014-11-20 | 2015-03-04 | 吴中区光福金怡五金配件厂 | Punch of press machine |
| CN104475711A (en) * | 2014-11-20 | 2015-04-01 | 吴中区光福金怡五金配件厂 | Press machine punch producing method |
| CN106607536A (en) * | 2015-10-21 | 2017-05-03 | 韩虎产业株式会社 | Cold forging device for manufacturing parking gear |
| CN112475188A (en) * | 2020-11-26 | 2021-03-12 | 太仓久信精密模具股份有限公司 | Limiting device for two ends of VGR rack swing-rolled blank and application thereof |
| CN113547056A (en) * | 2021-07-27 | 2021-10-26 | 上海汽车变速器有限公司 | Forming process of automobile half-shaft bevel gear |
| CN118403992A (en) * | 2022-08-25 | 2024-07-30 | 上海电气上重铸锻有限公司 | A forging device for 316LN stainless steel ultra-thick trapezoidal cross-section forgings |
-
2011
- 2011-10-19 CN CN2011203996105U patent/CN202291189U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102430692A (en) * | 2011-10-19 | 2012-05-02 | 浙江工业大学 | Cold precision forging process for bevel gear and mould thereof |
| CN103433418A (en) * | 2013-07-03 | 2013-12-11 | 中国农业大学 | Precision forging device and method for spiral bevel gear |
| CN104385670A (en) * | 2014-11-20 | 2015-03-04 | 吴中区光福金怡五金配件厂 | Punch of press machine |
| CN104475711A (en) * | 2014-11-20 | 2015-04-01 | 吴中区光福金怡五金配件厂 | Press machine punch producing method |
| CN106607536A (en) * | 2015-10-21 | 2017-05-03 | 韩虎产业株式会社 | Cold forging device for manufacturing parking gear |
| CN112475188A (en) * | 2020-11-26 | 2021-03-12 | 太仓久信精密模具股份有限公司 | Limiting device for two ends of VGR rack swing-rolled blank and application thereof |
| CN113547056A (en) * | 2021-07-27 | 2021-10-26 | 上海汽车变速器有限公司 | Forming process of automobile half-shaft bevel gear |
| CN118403992A (en) * | 2022-08-25 | 2024-07-30 | 上海电气上重铸锻有限公司 | A forging device for 316LN stainless steel ultra-thick trapezoidal cross-section forgings |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120704 Termination date: 20141019 |
|
| EXPY | Termination of patent right or utility model |