CN102397971A - Finishing die block for conjunction gear - Google Patents
Finishing die block for conjunction gear Download PDFInfo
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- CN102397971A CN102397971A CN2011103732385A CN201110373238A CN102397971A CN 102397971 A CN102397971 A CN 102397971A CN 2011103732385 A CN2011103732385 A CN 2011103732385A CN 201110373238 A CN201110373238 A CN 201110373238A CN 102397971 A CN102397971 A CN 102397971A
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- die cavity
- large diameter
- die
- enlarged diameter
- diameter section
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Abstract
The invention discloses a finishing die block for conjunction gear, which comprises, from parting surface downward, successively arranged a large diameter segment die cavity, a conjunction gear die cavity and an external ledge die cavity. The depth of the large diameter segment die cavity accounts for 1/3 - 1/2 of the length of the forging stock large diameter segment, while its inner diameter is 0.8mm - 1.2mm smaller than the designed dimensional large diameter of the large diameter segment. The oral area of the die cavity is provided with a transition structure that extends to the rest large diameter segment that has been formed by free forging. The invention installs in the same die a large diameter segment cylinder step which is co-axial with the conjunction gear. The forging stock can immediately perform back taper treatment on the conjunction gear after finishing, with no impact on the location datum and clamping of the subsequent machining. Thus, the back and forth time between the forging workshop and the machining workshop of the forging stock is reduced, and the working efficiency is improved. Due to the fact that the work flow is cut in half, the likelihood of collision between products is also lowered, which is beneficial to improve product quality.
Description
Technical field
The present invention relates to a kind of forging and pressing shaping mould, specifically, the present invention relates to a kind of combination gear finishing bed die.
Background technology
Under existing technology, equipment condition, one's own profession had generally adopted the precision forging technology to realize combination gear shaping batch process already.Die finish is a requisite mould in the combination gear precision forging, and the finishing bed die is the main part of die finish, and its mold cavity configuration is according to the distinctive shaped design of combination gear.Because of the forging stock enlarged diameter section of output is follow-up cut position; The industry will be forged the surplus design herein usually; So enlarged diameter section is the free forming district of no mould restriction, be circle drum outside here after the forging and pressing, circle drum is not suitable for the retaining part as follow-up cut.In conjunction with the tooth die cavity is the core position of die finish, is back taper in conjunction with the tooth profile of tooth, should take two step forming technologies; So the combination tooth tooth base that the initial stage processes on the forging stock is a straight-tooth, outer wall is cylindrical here, although can be used as the retaining part of follow-up cut here; But clamping force is unsuitable excessive; Combine tooth tooth base otherwise destroy, adding straight-tooth is not the final profile of tooth of product, needs to reach designing requirement through the back taper processing.It is to combine the big footpath of tooth section to heave that back taper is handled main variation the in back.This shows that the combination tooth after back taper is handled is unsuitable to follow-up machined positioning reference and retaining part.The industry is in combining the wheel manufacture process; Usually after finishing, earlier forging stock is delivered to machine shop; Clamping combines tooth external cutting processing enlarged diameter section to cylindrical shape; Then forging is turned back to the forging and pressing workshop and implement the back taper processing, be transferred to machine shop at last again, the finished enlarged diameter section of clamping is done follow-up axis hole and building up by welding processing.Although the forging stock by existing finishing bed die forging and pressing can produce qualified products, the production flow route is long, and operation is numerous and diverse, and production efficiency is low.In addition, product increases the probability that collides with in repeatedly circulation process, must increase rejection number.
Summary of the invention
The present invention is primarily aimed at the deficiency of prior art, propose a kind of simple in structure, the combination gear finishing bed die that the finishing forming accuracy is high.This finishing bed die forms the cylinder coaxial with combining tooth through improving die joint at the forging stock enlarged diameter section, reserves retaining part for follow-up cut, reduces the production flow of forging stock thus, enhances productivity and the quality of production.
The present invention realizes technical goal through following technical proposals.
Combination gear finishing bed die, it comprises the enlarged diameter section die cavity that sets gradually from die joint downwards, combine the tooth die cavity and outside the shoulder die cavity.Its improvements are: said enlarged diameter section die cavity vertical depth accounts for 1/3～1/2 of this section thickness, and its internal diameter is than the big 0.8mm～1.2mm of enlarged diameter section design size, and the die cavity oral area is provided with the residue enlarged diameter section of transition structure to free excellent suitability for press forming.
In the said structure, die cavity oral area transition structure is chamfering or evagination arc structure.
The present invention compared with prior art has following good effect:
1, the die joint with mould is increased to enlarged diameter section, and is simple and reasonable for structure, do not increase manufacture difficulty;
2, be provided with one section by the cylinder that be shaped by the mould restriction at the forging stock enlarged diameter section, for follow-up cut is reserved clip position;
3, the enlarged diameter section cylinder step coaxial with combining tooth is set in same mould; Forging stock can then do to combine the tooth back taper to handle after finishing, does not change follow-up mach positioning reference and clamping, thereby reduces production flow; Reduce the chance of colliding with, improve work efficiency.
Description of drawings
Fig. 1 is that structure of the present invention is partly cutd open sketch map.
Fig. 2 is that the forging stock structure after Fig. 1 finishing is partly cutd open sketch map.
Fig. 3 is the local enlarged diagram in Fig. 2 II place, combines tooth big footpath section after back taper is handled to heave among the figure.
Fig. 4 is the local enlarged diagram in Fig. 2 I place.
Fig. 5 is the contrast sketch map of prior art and Fig. 1.
Fig. 6 is that the forging stock structure after Fig. 5 finishing is partly cutd open sketch map.
Fig. 7 is the local enlarged diagram in Fig. 6 I place.The specific embodiment
According to accompanying drawing and combine embodiment, the present invention is described further below.
A kind of combination gear finishing bed die shown in Figure 1, it comprises the enlarged diameter section die cavity 2 that sets gradually from die joint 1 downwards, combine tooth die cavity 3 and outside shoulder die cavity 4.The technical measures that the present invention takes are that mould die joint 1 is increased to the enlarged diameter section waist, and form step as shown in Figure 4 at forging stock enlarged diameter section as shown in Figure 2 place.Present embodiment is that Beijing Hyundai Motor becomes the combination gear in the FCL, is 94.5mm according to the forging stock enlarged diameter section diameter of technological design, and length is 15mm.In order to reduce production procedure, combination gear finishing bed die of the present invention is provided with one section enlarged diameter section die cavity 2 under die joint, and its degree of depth is 8mm, and the die cavity internal diameter is 93.8mm, is provided with 1.0 * 45 at enlarged diameter section die cavity 2 oral areas
0Chamfering, transit to the enlarged diameter section of the free excellent suitability for press forming of part through chamfering.
The present invention is provided with the enlarged diameter section cylinder step coaxial with combining tooth in same mould; Forging stock can then do to combine the tooth back taper to handle after finishing; Do not influence follow-up mach positioning reference and clamping; Thereby reduce the round number of times of forging stock, enhance productivity at forging and pressing workshop and machine shop.Because production procedure reduces half the, the product chance of colliding with reduces too, helps improving the quality of products.
Claims (3)
1. combination gear finishing bed die, it comprises the enlarged diameter section die cavity (2) that sets gradually from die joint (1) downwards, combine tooth die cavity (3) and outside shoulder die cavity (4); It is characterized in that: said enlarged diameter section die cavity (2) vertical depth accounts for 1/3～1/2 of this section thickness, and its internal diameter is than the big 0.8mm～1.2mm of enlarged diameter section design size, and the die cavity oral area is provided with the residue enlarged diameter section of transition structure to free excellent suitability for press forming.
2. combination gear finishing bed die according to claim 1 is characterized in that: said enlarged diameter section die cavity (2) oral area transition structure is a chamfering structure.
3. combination gear finishing bed die according to claim 1 is characterized in that: said enlarged diameter section die cavity (2) oral area transition structure is the evagination arc structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103732385A CN102397971A (en) | 2011-11-22 | 2011-11-22 | Finishing die block for conjunction gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011103732385A CN102397971A (en) | 2011-11-22 | 2011-11-22 | Finishing die block for conjunction gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102397971A true CN102397971A (en) | 2012-04-04 |
Family
ID=45880851
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011103732385A Pending CN102397971A (en) | 2011-11-22 | 2011-11-22 | Finishing die block for conjunction gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102397971A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058555A1 (en) * | 2014-10-17 | 2016-04-21 | 江苏太平洋精锻科技股份有限公司 | Differential bevel gear finishing bed die |
| CN108581079A (en) * | 2018-05-28 | 2018-09-28 | 刘朝龙 | A kind of processing technology of linear cutter precision external tooth |
| CN111730021A (en) * | 2020-06-19 | 2020-10-02 | 江苏智造新材有限公司 | Forging process of combined tooth |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233037A (en) * | 1985-08-05 | 1987-02-13 | Nissan Motor Co Ltd | Forming method for gear for transmission of automobile |
| JPH04366028A (en) * | 1991-09-06 | 1992-12-17 | Metal Art:Kk | Manufacturing device for transmission gear |
| JP2002113543A (en) * | 2000-10-10 | 2002-04-16 | Ooka Giken Kk | Gear, and manufacturing method thereof |
| CN101428326A (en) * | 2008-12-08 | 2009-05-13 | 江苏太平洋精密锻造有限公司 | Automotive reverse gear intermediate gear tooth form final finishing and back taper forming mould |
| CN202316885U (en) * | 2011-11-22 | 2012-07-11 | 江苏太平洋精锻科技股份有限公司 | Combined gear finishing die block |
-
2011
- 2011-11-22 CN CN2011103732385A patent/CN102397971A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6233037A (en) * | 1985-08-05 | 1987-02-13 | Nissan Motor Co Ltd | Forming method for gear for transmission of automobile |
| JPH04366028A (en) * | 1991-09-06 | 1992-12-17 | Metal Art:Kk | Manufacturing device for transmission gear |
| JP2002113543A (en) * | 2000-10-10 | 2002-04-16 | Ooka Giken Kk | Gear, and manufacturing method thereof |
| CN101428326A (en) * | 2008-12-08 | 2009-05-13 | 江苏太平洋精密锻造有限公司 | Automotive reverse gear intermediate gear tooth form final finishing and back taper forming mould |
| CN202316885U (en) * | 2011-11-22 | 2012-07-11 | 江苏太平洋精锻科技股份有限公司 | Combined gear finishing die block |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016058555A1 (en) * | 2014-10-17 | 2016-04-21 | 江苏太平洋精锻科技股份有限公司 | Differential bevel gear finishing bed die |
| CN108581079A (en) * | 2018-05-28 | 2018-09-28 | 刘朝龙 | A kind of processing technology of linear cutter precision external tooth |
| CN108581079B (en) * | 2018-05-28 | 2020-09-15 | 刘朝龙 | Machining process for machining precise external teeth through linear cutting |
| CN111730021A (en) * | 2020-06-19 | 2020-10-02 | 江苏智造新材有限公司 | Forging process of combined tooth |
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| C06 | Publication | ||
| PB01 | Publication | ||
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| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20120404 |