CN207735533U - The conjunction gear precision forging die of built-in slow pressing structure - Google Patents
The conjunction gear precision forging die of built-in slow pressing structure Download PDFInfo
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- CN207735533U CN207735533U CN201721891415.8U CN201721891415U CN207735533U CN 207735533 U CN207735533 U CN 207735533U CN 201721891415 U CN201721891415 U CN 201721891415U CN 207735533 U CN207735533 U CN 207735533U
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- neto
- die
- spring
- conjunction gear
- mold core
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Abstract
The utility model discloses a kind of conjunction gear precision forging dies of built-in slow pressing structure, it includes head cover, spring, tooth mold core, Neto, upper die body and lower die.The axial cavity for placing Neto is equipped in the middle part of the upper die body upper surface, in Neto upper surface horizontal spring, the head cover is located on upper die body and connects, and constitutes the accumulation of energy structure using built-in spring axial deformation and displacement.It is evenly distributed with axially extending bore by workpiece conjunction gear position and quantity in the die cavity of the upper die body, a rooted tooth mold core is inserted in every axially extending bore.The bottom end of the tooth mold core is propped up on workpiece blank, and upper end is mutually leaned on Neto bottom face, constitutes the conjunction gear shaped structure that Neto pressure tooth mold core is pushed by the spring being pressurized.Spring releases energy and obviously lags behind forging force in the structure, thus reduces impact of forging force when upper and lower mould molding to tooth mold core, this effect greatly reduces forging die breakdown probability, achievees the purpose that improve the Service Life of Forging Die phase.
Description
Technical field
The utility model is related to a kind of metal forging dies, in particular, the utility model is related to a kind of conjunction gear precision forging die, it is special
It is not the conjunction gear precision forging die of built-in slow pressing structure.
Background technology
Triple gear is the important composition component in automotive transmission, which collects Cylinder Gear, cone tooth and conjunction gear in one
The special gear of body.Because the gear belongs to a kind of combined structural member, small, integrated level is relatively high, can save in the transmission
Save installation space.But the gear forming difficulty of processing of this composite structure increases, and is divided into outside in existing machinery manufacturing condition
Cylinder Gear on circumference can easily be realized by metal-removing process precision form process, and the cone tooth being located on a side end face and
Conjunction gear on another side end face, among being partially recessed into end face because of teeth portion, along with not having escape, use existing in structure
Metal-removing process cannot be accomplished to form.In face of the gear of this special construction, industry generally use precision forging adds
Metal-removing process realizes that forming, i.e., first finish forge go out to bore tooth, falls the conjunction gear of face finish forge another side again, last metal cutting
Process Cylinder Gear.In view of gear precision forging technique relative maturity, the industry usually presses a pressure forming technological design forging die.Although
The forging die of the prior art can be used in producing in batches, but service life is only at 10,000 or so.To find out its cause, prior art application
A pressure forming technique apply that forging force is relatively large, on the one hand larger forging force is conducive to shape, it is on the other hand right
Forging die generates impact, and along with conjunction gear mold core cross section built in the forging die of this technology application is relatively small, impact resistance has
Limit, so forging die is easily damaged at conjunction gear.Forging die belongs to sophisticated product, and making is long in time limit, and cost is big, service life
Short remove influences production efficiency, also increases the manufacturing cost of triple gear.
Utility model content
The utility model proposes to delay pressure knot built in one kind mainly for the conjunction gear precision forging die rapid wear problem of the prior art
The conjunction gear precision forging die of structure, the mode structure is simple, pressure is reasonable, and conjunction gear Forming Quality is good, and hammer die lif is long.
The utility model is achieved through the following technical solutions technical goal.
The conjunction gear precision forging die of built-in slow pressing structure, it include head cover, spring, tooth mold core, Neto, upper die body and under
Mould.Recessed cone tooth die cavity is equipped in the middle part of the lower die die joint, the upper die body on lower die presets conjunction gear one side
Die cavity, lower die and upper die body are collectively constituted to bore the finish forge mould bases of tooth positioning forging and stamping conjunction gear.It is theed improvement is that：It is described
It is equipped with the axial cavity for placing Neto in the middle part of upper die body upper surface, the spring kept flat is disposed in Neto upper surface.The head cover position
On upper die body, the head cover of metal thick plate is connected with upper die body, constitutes the storage using built-in spring axial deformation and displacement
It can structure.It is evenly distributed with axially extending bore by workpiece conjunction gear position and quantity in the die cavity of the upper die body, is inserted in every axially extending bore
Fill a rooted tooth mold core.The tooth mold core is rod component, and bottom end is propped up on workpiece blank, and upper end is mutually leaned on Neto bottom face, structure
The conjunction gear shaped structure of Neto pressure tooth mold core is pushed at the spring by being pressurized.
Scheme as a further improvement, axial cavity depth of the Neto axial length than being located at upper die body upper surface
Shallow, difference is equal to conjunction gear forming height.
The utility model compared with prior art, has the positive effect that：
1, the interior accumulation of energy structure being made of spring and Neto is added between upper die body and head cover, the simple in structure, making
It is easy；
2, when upper and lower mould molds, on the other hand the normal pressure workpiece blank of forging force one side makes the spring energy-storage of compression,
Then spring is pressed tooth mold core by Neto, realizes conjunction gear precision form, spring, which releases energy, in the structure obviously lags behind
Thus forging force reduces impact of the forging force to tooth mold core, this effect greatly reduces forging die breakdown probability, and reaching raising forging die makes
With the purpose of lifetime；
3, abundant pressure, rationally pressure, conjunction gear forming quality is good and stablizes, and forges qualification rate up to 99% or more.
Description of the drawings
Fig. 1 is the utility model structural profile illustration.
Fig. 2 is workpiece triple gear structural profile illustration, at A is conjunction gear in figure, the places B are Cylinder Gear, and the places C are to bore
Tooth.
Specific implementation mode
Below according to attached drawing and in conjunction with the embodiments, the utility model is described in further detail.
The conjunction gear precision forging die of built-in slow pressing structure shown in FIG. 1, it includes head cover 1, spring 2, tooth mold core 3, Neto
4, upper die body 5 and lower die 6.The die joint of the lower die 6 is plane upward, and recessed cone tooth mould is equipped in die joint portion placed in the middle
Chamber.Upper die body 5 on lower die 6 presets the die cavity of conjunction gear one side, and lower die 6 is collectively constituted with upper die body 5 to bore tooth
The finish forge mould bases of positioning forging and stamping conjunction gear.The axial cavity for placing Neto 4 is equipped in the middle part of 5 upper surface of the utility model upper die body,
The cavity is flat counterbore.The utility model forges and presses the highly consistent of quality, especially every conjunction gear in order to ensure conjunction gear,
So the depth of setting 5 upper surface axial cavity of upper die body and the axial length of Neto 4, setting principle are 4 axial length of Neto
Than the axial cavity depth as shallow for being located at 5 upper surface of upper die body, difference is equal to conjunction gear forming height, the present embodiment conjunction gear tooth
High 3.2mm.2 horizontal of spring is in 4 upper surface of Neto, and because built-in accumulation of energy combination axial dimension is smaller, structure is suitble to select axial
The shorter butterfly spring spring of size.The elastic force of the bearing spring 2 in the structure of the head cover 1, therefore head cover 1 must select metal
Material makes, and has certain thickness.Head cover 1 is connected with upper die body 5 after being installed in place, constituting one has the whole of lid
Body structure, head cover 1 primarily serve the flexible effect of limited spring 2 in the structure.The utility model in the die cavity of upper die body 5,
It is evenly distributed with axially extending bore by the conjunction gear position of workpiece and quantity, a matched tooth mold core 3 is inserted in every axially extending bore.Tooth
Mold core 3 is rod component, and bottom end is propped up on workpiece blank, and upper end and the bottom face of Neto 4 mutually lean on, spring when forging and stamping by being pressurized
2 push the pressure tooth of Neto 4 mold core 3, and the conjunction gear on workpiece is facilitated to shape.
When the utility model upper and lower mould molds, on the other hand the normal pressure workpiece blank of forging force one side makes compression
2 accumulation of energy of spring, then spring 2 pressed tooth mold core 3 by Neto 4, by tooth mold core 3 act on workpiece face realize conjunction gear precision at
Shape.Spring 2 releases energy and obviously lags behind forging force in structure, thus reduces impact of the forging force to tooth mold core 3, this effect is big
It is big to reduce forging die breakdown probability, achieve the purpose that improve the Service Life of Forging Die phase.
Claims (3)
1. a kind of conjunction gear precision forging die of built-in slow pressing structure, it includes head cover（1）, spring（2）, tooth mold core（3）, Neto
（4）, upper die body（5）And lower die（6）；The lower die（6）It is equipped with recessed cone tooth die cavity in the middle part of die joint, is located at lower die（6）It
On upper die body（5）Preset the die cavity of conjunction gear one side, lower die（6）With upper die body（5）It collectively constitutes to bore tooth positioning forging and stamping
The finish forge mould bases of conjunction gear；It is characterized in that：The upper die body（5）It is equipped in the middle part of upper surface and places Neto（4）Axial cavity,
In Neto（4）Upper surface disposes the spring kept flat（2）；The head cover（1）Positioned at upper die body（5）On, the head cover of metal thick plate
（1）With upper die body（5）It is connected, constitutes and utilize built-in spring（2）The accumulation of energy structure of axial deformation and displacement；The upper die body
（5）Die cavity in by workpiece conjunction gear position and quantity be evenly distributed with axially extending bore, a rooted tooth mold core is inserted in every axially extending bore
（3）；The tooth mold core（3）For rod component, bottom end is propped up on workpiece blank, upper end and Neto（4）Bottom face mutually leans on, constitute by
The spring of compression（2）Push Neto（4）Press tooth mold core（3）Conjunction gear shaped structure.
2. the conjunction gear precision forging die of built-in slow pressing structure according to claim 1, it is characterised in that：The Neto（4）
Axial length ratio is located at upper die body（5）The axial cavity depth as shallow of upper surface, difference are equal to conjunction gear forming height.
3. the conjunction gear precision forging die of built-in slow pressing structure according to claim 1, it is characterised in that：The spring（2）
For butterfly spring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721891415.8U CN207735533U (en) | 2017-12-29 | 2017-12-29 | The conjunction gear precision forging die of built-in slow pressing structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721891415.8U CN207735533U (en) | 2017-12-29 | 2017-12-29 | The conjunction gear precision forging die of built-in slow pressing structure |
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| Publication Number | Publication Date |
|---|---|
| CN207735533U true CN207735533U (en) | 2018-08-17 |
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| CN201721891415.8U Active CN207735533U (en) | 2017-12-29 | 2017-12-29 | The conjunction gear precision forging die of built-in slow pressing structure |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160896A (en) * | 2017-12-29 | 2018-06-15 | 江苏飞船股份有限公司 | The conjunction gear precision forging die of built-in slow pressing structure |
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2017
- 2017-12-29 CN CN201721891415.8U patent/CN207735533U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108160896A (en) * | 2017-12-29 | 2018-06-15 | 江苏飞船股份有限公司 | The conjunction gear precision forging die of built-in slow pressing structure |
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