CN205341780U - Castellated gear cold extruding die of high accuracy - Google Patents
Castellated gear cold extruding die of high accuracy Download PDFInfo
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- CN205341780U CN205341780U CN201620138202.7U CN201620138202U CN205341780U CN 205341780 U CN205341780 U CN 205341780U CN 201620138202 U CN201620138202 U CN 201620138202U CN 205341780 U CN205341780 U CN 205341780U
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Abstract
The utility model discloses a castellated gear cold extruding die of high accuracy is provided with mould in the profile of tooth cold extrusion on the upper die base, in the profile of tooth cold extrusion below the mould, correspond and set up the profile of tooth cold and force down the mould, and the profile of tooth cold is squeezed into the shaping die cavity profile of tooth that mould and profile of tooth cold forced down the mould and is corresponded formative gear cold extrusion type chamber behind the compound die each other, the mould setting is forced down on the die holder to the profile of tooth cold, the following that the mould was forced down in the profile of tooth cold sets up the liftout ware, and the liftout ware lets in the profile of tooth cold and forces down in the shaping die cavity of mould, below the liftout ware, set up the spring, the spring promotes liftout ware upward movement and produces the liftout action during drawing of patterns. The utility model discloses a cold extruding die through the mode that cold forging, heat recombination finish forge combined together, just can make the gear through forged method, and the shaping precision is high, reduces the cost of spare part, improves the mechanical strength of product, conveniently obtains form of gear tooth, and the preparation degree of difficulty in condition satisfies the technological requirement, reduce the production efficiency of equipment investment, improvement spare part by a wide margin.
Description
Technical field
This utility model relates to the cold extrusion die of gear, and especially automobile DCT automatic transmission P keeps off the cold extrusion die of the high-accuracy profile of tooth of parking gear.
Background technology
It is that automatic gearbox P keeps off vital part that automobile DCT automatic transmission P keeps off parking gear, automotive safety is stopped extremely important, its quality directly affects automobile in parking safety, it is desirable to be linked into locked output shaft during P gear, it is prevented that automobile is occurring sliding less than 30 degree of slopes.Park tooth is generally located on output shaft, is in idling conditions at ordinary times, and when stopping, through P gear shift fork effect, park pawl engagement locks output shaft.Thus realizing P to keep off parking needs.In prior art, the traditional processing method of this gear is line cutting electric machining or the processing of large-scale vertical broaching machine, but its difficulty of processing is big, speed slow, need high-precision wire cutting equipment and large-scale vertical draw bench oil (gas) filling device, and investment is big；It addition, there is also, material use is low, integrated cost is high, profile of tooth intensity difference, does not have the deficiencies such as the market competitiveness, and parking rectangular teeth facial contour precision is high, roughness reaches roughness more than 1.6, makes extremely difficult.
Summary of the invention
This utility model is for processing automobile DCT automatic transmission park tooth above shortcomings in prior art, a kind of cold extrusion processing profile of tooth mould is provided, it is forged by hot and cold combined precision, the method adopting precision forging manufactures the cold extrusion die of high-accuracy profile of tooth, and especially automobile DCT automatic transmission P keeps off the profile of tooth cold extrusion die of parking gear.
The technical solution of the utility model: the gear cold extrusion die of high accuracy profile of tooth, including upper bolster and die shoe, it is characterized in that: on upper bolster, be provided with mould in profile of tooth cold extrusion, in profile of tooth cold extrusion below mould, it is correspondingly arranged profile of tooth cold-extruded counterdie, on profile of tooth cold-extruded, mould is mutually corresponding with the forming recess of profile of tooth cold-extruded counterdie, forms gear cold extrusion die cavity after matched moulds；Described profile of tooth cold-extruded counterdie is arranged on die shoe；Profile of tooth cold-extruded counterdie ejector is provided below, ejector passes in the forming recess of profile of tooth cold-extruded counterdie；Below ejector, arranging spring, during the demoulding, spring promotes ejector to move upward and produces liftout action.
Further feature is: described spring is nitrogen spring, backing plate is provided below at spring, and spring supporting is on backing plate.
The lower end of ejector, spring are all disposed within the vertical slot of lower force bearing plate, and spring drives ejector to move up and down in this groove, produces liftout action.
Profile of tooth cold-extruded counterdie is arranged around counterdie ring for fixing, and counterdie ring for fixing is supported on lower force bearing plate, and lower force bearing plate is arranged on lower bolster again, and lower force bearing plate and/or lower bolster are supported on die shoe.
Trim ring on upper bolster is provided below, is arranged above with lower platen at die shoe, is all detachable connection.
The gear cold extrusion die of this utility model high accuracy profile of tooth, relative to prior art, has the feature that
1, the mode combined by cold forging, hot compound finish forge, just can be manufactured automobile DCT automatic transmission P by the method forged and keep off parking gear, and formed precision is high, reduce the cost of parts, improve the mechanical strength of product, readily obtain the form of gear tooth, condition manufacture difficulty, meets technological requirement.
2, high precision electro spark equipment need not be used, equipment investment is greatly lowered.
3, increase substantially the production efficiency of parts, meet the needs in market.
Accompanying drawing illustrates:
Fig. 1 gear cold extrusion die of the present utility model.
Detailed description of the invention
In Fig. 1, the gear cold extrusion die of this utility model high accuracy profile of tooth, including upper bolster 1 and die shoe 2, upper bolster 1 is provided with on profile of tooth cold-extruded mould 3, a kind of concrete structure in figure is to arrange upper padding plate 4 on upper bolster 1, and on profile of tooth cold-extruded, mould 3 is arranged on below upper padding plate 4, during forging operation, drive mould 3 and upper padding plate 4 on lower toothed cold-extruded to synchronize to move up and down at power set, on profile of tooth cold-extruded mould 3 as equipment slide block to blank active force.
On profile of tooth cold-extruded below mould 3, it is correspondingly arranged profile of tooth cold-extruded counterdie 5, on profile of tooth cold-extruded, mould 3 is mutually corresponding with the forming recess (including profile of tooth etc.) of profile of tooth cold-extruded counterdie 5, all make according to technological requirement, back taper die cavity is formed after matched moulds, i.e. gear cold extrusion die cavity 6, the forming recess of profile of tooth cold-extruded counterdie 5 is conical internal cavity；During extrusion operation, product to be extruded being put into gear cold extrusion die cavity 6, gear of the present utility model obtains profile of tooth precise extrusion in gear cold extrusion die cavity 6, reaches to meet the shape of technological requirement and precision.Mould 3, profile of tooth cold-extruded counterdie 5 on profile of tooth cold-extruded, and gear cold extrusion die cavity 6, determine according to technological requirement, meet the needs of cold extrusion associated gear.
Profile of tooth cold-extruded counterdie 5 ejector 7 is provided below, the upper end (outer round belt parts of tooth) of ejector 7 can pass in the forming recess of profile of tooth cold-extruded counterdie 5, up moving when the demoulding, from one active force of workpiece of following processing to be extruded, workpiece ejects in gear cold extrusion die cavity 6；Below ejector 7, arranging spring 8, described spring 8 is nitrogen spring, and during the demoulding, spring 8 promotes ejector 7 to move upward and produces liftout action.Spring 8 is supported on backing plate 9, and the lower end of ejector 7, spring 8 are all disposed within lower force bearing plate 11, is specifically located in the vertical slot of lower force bearing plate 11, and spring 8 drives ejector 7 to move up and down in this groove, produces liftout action.
During extrusion operation, put into the product to be extruded of gear cold extrusion die cavity 6, profile of tooth cold extrusion starts to move downward under the effect of mould 3, ejector 7 compressed nitrogen spring 8 can produce counteracting force and compress the bottom surface of product to be extruded simultaneously, play the effect preventing product to be extruded skew and upset, simultaneously work as the effect improving Product Precision.After having extruded, on cold-extruded, mould 3 promotes, and the product after extrusion process is ejected by ejector 7 under the effect of spring 8.
Profile of tooth cold extrusion counterdie 5 is arranged on die shoe 2, a kind of concrete structure in figure, profile of tooth cold-extruded counterdie 5 is arranged around counterdie ring for fixing 10, counterdie ring for fixing 10 is supported on lower force bearing plate 11, lower force bearing plate 11 arranges on lower bolster 12 again, and lower force bearing plate 11 and/or lower bolster 12 are supported on die shoe 2.
Trim ring 13 is provided below at upper bolster 1, is arranged above with lower platen 4 at die shoe 2, be all detachable connection.
During extrusion operation work, first suitable product blank to be extruded (P keeps off parking gear blank) is inserted inverted cone-shaped intracavity, be placed in gear cold extrusion die cavity 6；The forcing press of adapted drives upper bolster 1, upper mould 3 to move down, on profile of tooth cold-extruded, mould 3 is in decline process, as top shoe to blank active force, make blank extruded at inverted cone-shaped intracavity, it is thus achieved that the shape of needs, dimensional accuracy, positional precision and surface smoothness.
Claims (5)
1. the gear cold extrusion die of high accuracy profile of tooth, including upper bolster (1) and die shoe (2), it is characterized in that: on upper bolster (1), be provided with in profile of tooth cold extrusion mould (3), in profile of tooth cold extrusion, mould (3) is below, it is correspondingly arranged profile of tooth cold-extruded counterdie (5), on profile of tooth cold-extruded, mould (3) is mutually corresponding with the forming recess of profile of tooth cold-extruded counterdie (5), forms gear cold extrusion die cavity (6) of inverted cone after matched moulds；Described profile of tooth cold-extruded counterdie (5) is arranged on die shoe (2)；Profile of tooth cold-extruded counterdie (5) ejector (7) is provided below, ejector (7) passes in the forming recess of profile of tooth cold-extruded counterdie (5)；At ejector (7) below, arranging spring (8), during the demoulding, spring (8) promotes ejector (7) to move upward and produces liftout action.
2. according to claim 1 high accuracy profile of tooth gear cold extrusion die, it is characterised in that: described spring (8) is nitrogen spring, backing plate (9) is provided below at spring (8), and spring (8) is supported on backing plate (9).
3. according to claim 2 high accuracy profile of tooth gear cold extrusion die, it is characterized in that: the lower end of ejector (7), spring (8) are all disposed within the vertical slot of lower force bearing plate (11), spring (8) drives ejector (7) to move up and down in this groove, produces liftout action.
4. the gear cold extrusion die according to the arbitrary described high accuracy profile of tooth of claims 1 to 3, it is characterized in that: profile of tooth cold-extruded counterdie (5) is arranged around counterdie ring for fixing (10), counterdie ring for fixing (10) is supported on lower force bearing plate (11), lower force bearing plate (11) arranges on lower bolster (12) again, and lower force bearing plate (11) and/or lower bolster (12) are supported on die shoe (2).
5. the gear cold extrusion die according to the arbitrary described high accuracy profile of tooth of claims 1 to 3, it is characterised in that: upper trim ring (13) is provided below at upper bolster (1), is arranged above with lower platen (4) at die shoe (2), be all detachable connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620138202.7U CN205341780U (en) | 2016-02-24 | 2016-02-24 | Castellated gear cold extruding die of high accuracy |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620138202.7U CN205341780U (en) | 2016-02-24 | 2016-02-24 | Castellated gear cold extruding die of high accuracy |
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| CN205341780U true CN205341780U (en) | 2016-06-29 |
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| CN201620138202.7U Active CN205341780U (en) | 2016-02-24 | 2016-02-24 | Castellated gear cold extruding die of high accuracy |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583618A (en) * | 2016-12-05 | 2017-04-26 | 中国航空工业标准件制造有限责任公司 | Continuous trimming combined die |
| CN108637091A (en) * | 2018-04-28 | 2018-10-12 | 张新 | The multidirectional red stamping die of one kind and forming method |
| CN109513760A (en) * | 2019-02-18 | 2019-03-26 | 第拖拉机股份有限公司 | A kind of device and its pressing method of cold extrusion teeth portion boss |
| CN109773432A (en) * | 2019-02-27 | 2019-05-21 | 常州金球轴承厂 | Multistation cold extrusion tooth shaft forming technology |
| CN110142375A (en) * | 2019-05-23 | 2019-08-20 | 郑州机械研究所有限公司 | The rocker arm shaft separate structure mold and its processing method of replaceable rapid wear teeth portion |
| CN110421109A (en) * | 2019-08-29 | 2019-11-08 | 上海瀚通汽车零部件有限公司 | A kind of cold pier extrusion-processing technology of toothed member |
| CN113458171A (en) * | 2021-07-20 | 2021-10-01 | 重庆创精温锻成型有限公司 | Parking tooth shape and internal spline synchronous extrusion forming method |
-
2016
- 2016-02-24 CN CN201620138202.7U patent/CN205341780U/en active Active
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106583618A (en) * | 2016-12-05 | 2017-04-26 | 中国航空工业标准件制造有限责任公司 | Continuous trimming combined die |
| CN108637091A (en) * | 2018-04-28 | 2018-10-12 | 张新 | The multidirectional red stamping die of one kind and forming method |
| CN109513760A (en) * | 2019-02-18 | 2019-03-26 | 第拖拉机股份有限公司 | A kind of device and its pressing method of cold extrusion teeth portion boss |
| CN109513760B (en) * | 2019-02-18 | 2024-01-19 | 第一拖拉机股份有限公司 | Device for cold extrusion of tooth boss and extrusion method thereof |
| CN109773432A (en) * | 2019-02-27 | 2019-05-21 | 常州金球轴承厂 | Multistation cold extrusion tooth shaft forming technology |
| CN110142375A (en) * | 2019-05-23 | 2019-08-20 | 郑州机械研究所有限公司 | The rocker arm shaft separate structure mold and its processing method of replaceable rapid wear teeth portion |
| CN110142375B (en) * | 2019-05-23 | 2020-04-17 | 郑州机械研究所有限公司 | Rocker arm shaft split structure die with replaceable easily-damaged tooth part and machining method thereof |
| CN110421109A (en) * | 2019-08-29 | 2019-11-08 | 上海瀚通汽车零部件有限公司 | A kind of cold pier extrusion-processing technology of toothed member |
| CN113458171A (en) * | 2021-07-20 | 2021-10-01 | 重庆创精温锻成型有限公司 | Parking tooth shape and internal spline synchronous extrusion forming method |
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