CN204182848U - Prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil - Google Patents
Prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil Download PDFInfo
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- CN204182848U CN204182848U CN201420601500.6U CN201420601500U CN204182848U CN 204182848 U CN204182848 U CN 204182848U CN 201420601500 U CN201420601500 U CN 201420601500U CN 204182848 U CN204182848 U CN 204182848U
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- teeth portion
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- flank profil
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Abstract
The utility model discloses one prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil, this mould is provided with the cone gear form die cavity of uncovered shape, and mould intracavity wall is made up of the teeth portion equidistantly arranged and teeth groove.The utility model is provided with evagination step at the flank profil edge of cone gear form die cavity teeth portion large end face, and the cross section of evagination step is acute triangle.For the ease of the workpiece demoulding, the acute triangle hypotenuse of evagination step leaves 0.5
0~ 3
0pattern draft.By evagination step preset in die cavity, to realize when finishing is shaped prefabricated chamfering on the wide edge of the large end tooth of workpiece, angle during tilting chamfering increase turning between Tool in Cutting direction and large end face, thus reduce the impulsive force of interrupted turning, avoid flange phenomenon occurs.Workpiece is after correction of the flank shape finishing, and large end face, without flange, saves blank operation, substantially increases production work efficiency, also reduces colliding with between workpiece simultaneously, is conducive to improving crudy, and the utility model is particularly suitable for complete production line and does to produce in enormous quantities.
Description
Technical field
The utility model belongs to metal forging mould structure design technical field, specifically, the tooth base that the utility model relates to a kind of gear forging dies structural design, particularly precision forging after turnery processing the flank of tooth without the prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil of flange.
Background technology
The bevel gear of to be a kind of back side the be sphere of the differential bevel gear in automobile differential, this kind requires very high with location at spherical surface and by the parts of engaged transmission to matching quality.Now, the industry generally adopts liquid metal forging forming technology to manufacture differential bevel gear.In order to improve the meshing quality of differential bevel gear further, after die forging finishing is shaped, implement large end face correction of the flank shape fine finishining again.The front outline of differential bevel gear is the flank of tooth, and the flank of tooth is made up of the tooth equidistantly arranged and teeth groove, is interrupted cut during the finish turning flank of tooth, and because the intersection of tooth and teeth groove is acute angle, during the lathe tool cutting flank of tooth, teeth portion edge metal is easily to turnup in teeth groove.There is the burr of turnup easily to cause gear to assemble difficulty in teeth groove even stuck, therefore one flank of tooth must be increased before product export remove overturning process.In production process, many one manufacturing procedures must increase manufacturing cost, reduce work efficiency.
Utility model content
The utility model is mainly for the deficiencies in the prior art, a kind of prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil making teeth portion and the prefabricated chamfering of teeth groove when finishing is shaped in the lump is proposed, the pre-chamfering structure of this mould is simple, makes easily, work efficiency is high, crudy is stable.
The utility model is achieved through the following technical solutions technical goal.
Prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil, this mould is provided with the cone gear form die cavity of uncovered shape.Its improvements are: the large end of teeth portion of described cone gear form die cavity is positioned at top, and small end is positioned at bottom, and the flank profil edge along teeth portion large end face is provided with evagination step (A), and the cross section of evagination step (A) is acute triangle.
In said structure, acute angles beta=10 on evagination step (A) cross section
0~ 15
0, acute angle towards gullet base, the across flats B=0.5 ~ 0.8mm of acute angle, the long L=2 ~ 3mm of hypotenuse of acute triangle; α=0.5 is left on the acute triangle limit of evagination step (A)
0~ 3
0pattern draft.
The utility model compared with prior art, has following good effect:
1, the outer lug boss stage structure arranged along teeth portion large end face flank profil edge on cone gear form die cavity top is simple, make easily;
2, evagination step is set in the flank profil of teeth portion large end face, the differential bevel gear large end face flank profil that finishing is shaped reserves chamfering, angle during tilting chamfering increase turning between Tool in Cutting direction and large end face, thus reduce the impulsive force of interrupted turning, avoid flange phenomenon occurs;
3, after workpiece turning, large end face flank profil, without flange, saves blank operation, thus improves work efficiency, also reduces colliding with when inter process has enough to meet the need between workpiece simultaneously, is conducive to improving crudy.
Accompanying drawing explanation
Fig. 1 is the utility model structural representation.
Fig. 2 is the axial section of Fig. 1, shows teeth portion structure.
Fig. 3 is Fig. 2 teeth portion K-K cross-section structure enlarged diagram, shows outer lug boss stage structure.
Fig. 4 is the workpiece close-up schematic view be shaped with structure finishing shown in Fig. 1, shows that chamfering is reserved in large end tooth face.
Fig. 5 is the workpiece that prior art finishing is shaped, and this workpiece teeth portion large end face teeth portion is right-angle side.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Shown in Fig. 1 prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil, this mould is provided with the cone gear form die cavity of uncovered shape, and mould intracavity wall is made up of the teeth portion equidistantly arranged and teeth groove.The utility model produces flange when large end face correction of the flank shape fine finishining implemented by workpiece after finishing is shaped, and on the top of cone gear form die cavity, namely the flank profil edge of teeth portion large end face is provided with evagination step A.The k-k cross section of described evagination step A is illustrated in figure 3 acute triangle, and acute angle is towards gullet base.The workpiece of the present embodiment processing is the supporting differential bevel gear of Designing Passenger Car Differentials, and such gear size is relatively little, therefore preset evagination step A size is also little, and acute angles beta is wherein 15
0, the across flats B=0.5mm of acute angle, the long L=2mm of hypotenuse of acute triangle.For the ease of the workpiece demoulding, the acute triangle hypotenuse of evagination step A leaves α=1.5
0pattern draft.The utility model is by preset evagination step A in die cavity, and realize making chamfering when finishing is shaped at the flank profil edge of bevel gear teeth portion large end face and be shaped, its finished product as shown in Figure 4.The angle of cutter and cutting direction when tilting chamfering increases turning teeth portion large end face, thus reduce the impulsive force of interrupted turning, avoid generation flange phenomenon.By enforcement of the present utility model, realize workpiece teeth portion large end face correction of the flank shape fine finishining and do not produce flange, save thus and rush overturning process, substantially increase production work efficiency benefit, also reduce colliding with when operation is had enough to meet the need between workpiece simultaneously, be conducive to improving crudy.
Claims (3)
1. a prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil, this mould is provided with the cone gear form die cavity of uncovered shape; It is characterized in that: the large end of teeth portion of described cone gear form die cavity is positioned at top, small end is positioned at bottom, and the flank profil edge along teeth portion large end face is provided with evagination step (A), and the cross section of evagination step (A) is acute triangle.
2. according to claim 1 in differential bevel gear teeth portion large end face flank profil prefabricated chamfering mould, it is characterized in that: acute angles beta=10 on described evagination step (A) cross section
0~ 15
0, acute angle towards gullet base, the across flats B=0.5 ~ 0.8mm of acute angle, the long L=2 ~ 3mm of hypotenuse of acute triangle.
3. according to claim 1 in differential bevel gear teeth portion large end face flank profil prefabricated chamfering mould, it is characterized in that: α=0.5 is left on the acute triangle limit of described evagination step (A)
0~ 3
0pattern draft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601500.6U CN204182848U (en) | 2014-10-17 | 2014-10-17 | Prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420601500.6U CN204182848U (en) | 2014-10-17 | 2014-10-17 | Prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204182848U true CN204182848U (en) | 2015-03-04 |
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ID=52614879
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|---|---|---|---|
| CN201420601500.6U Active CN204182848U (en) | 2014-10-17 | 2014-10-17 | Prefabricated chamfering mould in differential bevel gear teeth portion large end face flank profil |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204182848U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308062A (en) * | 2014-10-17 | 2015-01-28 | 江苏太平洋精锻科技股份有限公司 | Differential bevel gear finishing bed die |
| CN104858347A (en) * | 2015-05-20 | 2015-08-26 | 江苏太平洋齿轮传动有限公司 | Bevel gear forging die provided with chamfers |
-
2014
- 2014-10-17 CN CN201420601500.6U patent/CN204182848U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104308062A (en) * | 2014-10-17 | 2015-01-28 | 江苏太平洋精锻科技股份有限公司 | Differential bevel gear finishing bed die |
| 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 |
| CN104858347A (en) * | 2015-05-20 | 2015-08-26 | 江苏太平洋齿轮传动有限公司 | Bevel gear forging die provided with chamfers |
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |