CN202224579U - A straight tooth cylindrical gear forming die with tooth end bypass flow cavities - Google Patents
A straight tooth cylindrical gear forming die with tooth end bypass flow cavities Download PDFInfo
- Publication number
- CN202224579U CN202224579U CN2011202960708U CN201120296070U CN202224579U CN 202224579 U CN202224579 U CN 202224579U CN 2011202960708 U CN2011202960708 U CN 2011202960708U CN 201120296070 U CN201120296070 U CN 201120296070U CN 202224579 U CN202224579 U CN 202224579U
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- tooth
- increment
- bypass flow
- die cavity
- profile
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Abstract
The utility model provides a straight tooth cylindrical gear forming die with tooth end bypass flow cavities. The straight tooth cylindrical gear forming die is characterized in that the tooth end bypass flow cavities (5) corresponding to tooth ends in a tooth form die cavity (4) are disposed on the top end of the tooth form die cavity (4) and at the bottom of an upper die (6); and the tooth end bypass flow cavities (5) are communicated with the tooth form die cavity (4). The straight tooth cylindrical gear forming die is used for forming straight tooth cylindrical gears, with the bypass flow cavities disposed at positions difficult to fill of tooth forms. During forging, when tooth cavities are filled with material, redundant material can flow to the bypass flow cavities which can accommodate the redundant material, are beneficial to reduction of a forming force, and are easy to manufacture.
Description
Technical field
The utility model relates to a kind of straight spur gear shaping dies, specifically a kind of straight spur gear shaping dies that is provided with increment shunting chamber.
Background technology
Adopt two step method mesopore shunting cold forming for straight spur gear both at home and abroad at present; Wherein the first step is a preform; Promptly being shaped to haunt has the preform blank that is full of profile of tooth, and it is high that the gear that aspect ratio is shaped is eventually wanted, then this blank punching; The preform that this is with holes carries out the shaping eventually of second step again, obtains gear forgings.This forming mode complex process needs preform, punching, is shaped eventually, and also need intermediate annealing and the secondary that have lubricate, and technological process is long, loses efficient, the energy-conservation characteristics of precision form, in industry, is difficult to apply.
Axle shunting cold forming, profile of tooth end be metal at last, the most difficult position of filling.This forming technology mode, when the hole of punch all by metal filled when full, reduce than meeting near 1, make that metal is difficult to further flow again.Though reduced service load, under the condition of relatively low operating pressure, still be difficult to guarantee good filling property, in actual industrial production, be difficult to apply.
The utility model content
The utility model is for avoiding above-mentioned existing in prior technology weak point, provides that a kind of plastic force is low, technology is simple, flow process is short, and the straight spur gear shaping dies that is provided with increment shunting chamber that is easy to make.
The utility model technical solution problem adopts following technical scheme:
The design feature in the utility model straight spur gear increment shunting chamber is:
In the corresponding increment shunting of setting of the top of profile of tooth die cavity patrix bottom and the increment in profile of tooth die cavity chamber, said increment shunting chamber communicates with the profile of tooth die cavity.
The utility model design feature also is:
Said increment shunting chamber radial section is a rectangle.
Said increment shunting chamber is a plurality of separate cavitys that correspond respectively to each increment in the profile of tooth die cavity; Or be to connect annular cavity each other.
Said increment shunting chamber is arranged on the patrix bottom separately, or is arranged on patrix bottom and counterdie top simultaneously.
The utility model is used for the shaping of straight spur gear, and the shunting chamber is arranged on the difficult filling of profile of tooth position.In forging process, when material was full of tooth cavity, excess stock flowed to the shunting chamber, has the scope of freedom all the time, can avoid the rapid rising of load.Appropriate design through to shunting chamber size can obtain full level profile of tooth preferably under less plastic force.
Compared with present technology, the utility model beneficial effect is embodied in:
1, the utility model is used for the straight spur gear shaping, and because of the shunting cavity configuration, material has the scope of freedom when forging and molding, avoided the rapid rising of load, guarantees that the forging filling is complete;
2, can be arranged on patrix owing to shunt the chamber in the utility model, or be arranged on the upper die and lower die place simultaneously, the shunting chamber communicates with the profile of tooth die cavity, and the back forging that is shaped is prone to taking-up, and overlap is easy to excision;
3, shunting chamber radial section is that rectangle is to reduce shaping load in the utility model.
4, the gear forgings that is shaped with the utility model does not destroy flank of tooth fibre flow and distributes, and guarantees forging quality;
Description of drawings
Fig. 1 is the utility model structural representation.
Fig. 2 is the utility model perspective view.
Fig. 3 a, 3b are the patrix structural representations that the utility model is provided with increment shunting chamber.
Label among the figure: 1 is counterdie, and 2 is blank, and 3 is die, and 4 is the profile of tooth die cavity, and 5 are increment shunting chamber, and 6 is patrix.
The specific embodiment
Referring to Fig. 1, Fig. 2; Form the forging and molding mould by patrix 6, counterdie 1 and the die 3 that is provided with profile of tooth die cavity 4; Setting and the corresponding increment shunting of the increment in the profile of tooth die cavity 4 chamber 5 in profile of tooth die cavity 4 top patrixes 6 bottoms, increment shunting chamber 5 communicates with profile of tooth die cavity 4.
In the practical implementation, increment shunting chamber 5 radial sections are rectangle, to reduce shaping load.Increment shunting chamber 5 is a plurality of separate cavitys that correspond respectively to each increment in the profile of tooth die cavity 4; Or be to connect annular cavity each other.In the enforcement, increment shunting chamber 5 can be arranged on patrix 6 bottoms separately, or is arranged on patrix 6 bottoms and counterdie 1 top simultaneously.
In forging process, blank material is put into die, and forcing press is descending, and when blank material was full of the profile of tooth die cavity, excess stock just flowed to increment shunting chamber, makes to have the scope of freedom in the forging all the time, can avoid the rapid rising of load.Appropriate design through to increment shunting chamber size can obtain full level profile of tooth preferably under less plastic force.
Claims (4)
1. one kind is provided with the straight spur gear shaping dies that increment is shunted the chamber; It is characterized in that; In the setting of top patrix (6) bottom and the corresponding increment shunting of the increment in the profile of tooth die cavity (4) chamber (5) of profile of tooth die cavity (4), said increment shunting chamber (5) communicates with profile of tooth die cavity (4).
2. a kind of straight spur gear shaping dies that is provided with increment shunting chamber according to claim 1 is characterized in that: said increment shunting chamber (5) radial section is a rectangle.
3. a kind of straight spur gear shaping dies that is provided with increment shunting chamber according to claim 1 is characterized in that said increment shunting chamber (5) is a plurality of separate cavitys that correspond respectively to each increment in the profile of tooth die cavity (4); Or be to connect annular cavity each other.
4. a kind of straight spur gear shaping dies that is provided with increment shunting chamber according to claim 3, it is characterized in that: said increment shunting chamber (5) is arranged on patrix (6) bottom separately, or is arranged on patrix (6) bottom and counterdie (1) top simultaneously.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202960708U CN202224579U (en) | 2011-08-15 | 2011-08-15 | A straight tooth cylindrical gear forming die with tooth end bypass flow cavities |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011202960708U CN202224579U (en) | 2011-08-15 | 2011-08-15 | A straight tooth cylindrical gear forming die with tooth end bypass flow cavities |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202224579U true CN202224579U (en) | 2012-05-23 |
Family
ID=46075187
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011202960708U Expired - Fee Related CN202224579U (en) | 2011-08-15 | 2011-08-15 | A straight tooth cylindrical gear forming die with tooth end bypass flow cavities |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202224579U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157740A (en) * | 2013-03-08 | 2013-06-19 | 西安建筑科技大学 | Straight gear precise forging technology based on flow control forming principle and die |
| CN105880445A (en) * | 2014-09-26 | 2016-08-24 | 重庆凯恩机械制造股份有限公司 | A no-flash forging method for a Steyr steering knuckle using an electric screw press |
| CN111659842A (en) * | 2020-05-27 | 2020-09-15 | 四川工程职业技术学院 | Die forging processing method for variable-section titanium alloy frame type forge piece |
-
2011
- 2011-08-15 CN CN2011202960708U patent/CN202224579U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103157740A (en) * | 2013-03-08 | 2013-06-19 | 西安建筑科技大学 | Straight gear precise forging technology based on flow control forming principle and die |
| CN103157740B (en) * | 2013-03-08 | 2015-04-08 | 西安建筑科技大学 | Straight gear precise forging technology based on flow control forming principle and die |
| CN105880445A (en) * | 2014-09-26 | 2016-08-24 | 重庆凯恩机械制造股份有限公司 | A no-flash forging method for a Steyr steering knuckle using an electric screw press |
| CN111659842A (en) * | 2020-05-27 | 2020-09-15 | 四川工程职业技术学院 | Die forging processing method for variable-section titanium alloy frame type forge piece |
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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: 20120523 Termination date: 20140815 |
|
| EXPY | Termination of patent right or utility model |