CN109848351A - A kind of Preform Die of automobile gearbox internal gear - Google Patents
A kind of Preform Die of automobile gearbox internal gear Download PDFInfo
- Publication number
- CN109848351A CN109848351A CN201910225629.9A CN201910225629A CN109848351A CN 109848351 A CN109848351 A CN 109848351A CN 201910225629 A CN201910225629 A CN 201910225629A CN 109848351 A CN109848351 A CN 109848351A
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- China
- Prior art keywords
- lower die
- die
- internal gear
- face
- automobile gearbox
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Abstract
The invention discloses a kind of Preform Dies of automobile gearbox internal gear, it is related to the processing mold technical field of automobile gearbox internal gear, including upper die and lower die, the center of upper mold bottom is equipped with protrusion, the center of lower die is equipped with lower mold core, the lower die on lower mold core top is equipped with type chamber, and the center of lower mold core is equipped with the mandril for releasing forging, and lower die end face is equipped with groove.The present invention uses closed-die forging, improves the utilization rate of raw material；Lower die adopts a split structure, and increases groove in lower die, effectively avoids the type cavity edge stress of lower die from concentrating, prevents lower die from cracking, improve the service life of mold；Preform Die is arranged the intracavitary raw material of type to two sides by protrusion, and the less material of intermediate storage is conducive to finish forging, further increases the utilization rate of raw material.
Description
Technical field
The present invention relates to the processing mold technical fields of automobile gearbox internal gear, more particularly to a kind of automobile gearbox
The Preform Die of internal gear.
Background technique
Wheel rim gear in automobile gearbox is that the first power transmission role is served as master gear, and the receiving of wheel rim gear is started
Then the power of machine outflow spreads out of again and changes the speed change that other gear rotational speeds realize automobile.Wheel rim gear has diameter big and gross weight
Big feature, overall structure is similar to cylinder.Currently, wheel rim gear is fabricated by forging technology, though the product forging moulding
It is so simple, but be intended to improve that utilization rate of raw materials is relatively difficult, and the gross weight of product itself is larger, the raw material of waste compared with
It is more；And lower die is monolithic construction, being easy to appear stress concentration causes lower die to crack, and reduces the service life of mold；It can also be with
Base shape is served as come direct extrusion mo(u)lding using hollow pipe, but such molding mode needs large tonnage press machine, and
And hollow pipe is at high cost, causes the expense of entire production process higher.
Summary of the invention
The object of the invention is that providing a kind of blocker of automobile gearbox internal gear to solve the above-mentioned problems
Tool.
The present invention through the following technical solutions to achieve the above objectives:
A kind of Preform Die of automobile gearbox internal gear, including upper die and lower die, the center of the upper mold bottom
Equipped with protrusion, the center of the lower die is equipped with lower mold core, and the lower die on lower mold core top is equipped with type chamber, the center of lower mold core
Position is equipped with the mandril for releasing forging；The end face of the upper mold and the end face of lower die are plane, the end face of upper mold and lower die
End face fits, and the lower die end face is equipped with groove.
Preferably, it is in reverse frustoconic that the protrusion is approximate.
Preferably, the protrusion is connected with upper mold end face by circular arc.
Preferably, the groove is distributed in a ring on lower die end face.
Preferably, the groove is adjacent with type chamber.
The beneficial effects of the present invention are: the present invention uses closed-die forging, improves the utilization rate of raw material；Lower die, which uses, divides
Body formula structure, and increase groove in lower die, it effectively avoids the type cavity edge stress of lower die from concentrating, prevents lower die from cracking, improve
The service life of mold；Preform Die is arranged the intracavitary raw material of type to two sides by protrusion, and the less material of intermediate storage has
Conducive to finish forging, the utilization rate of raw material is further increased；The present apparatus realizes the purpose of small tonnage production of machinery large-scale workpiece,
Reduce production cost.
Detailed description of the invention
Fig. 1 is cross-sectional view of the invention.
Wherein: 1, upper mold；2, raised；3, mandril；4, lower die；5, lower mold core；6, type chamber；7, groove.
Specific embodiment
The present invention will be further explained below with reference to the attached drawings:
As shown in Figure 1, the present invention includes upper mold 1 and lower die 4.The center of 1 bottom of upper mold is equipped with protrusion 2, and protrusion 2 is close
Like being in reverse frustoconic, raised 2 are connected with 1 end face of upper mold by circular arc.Circular arc help blocking processing, facilitate the finish-forging of forging at
Type.The center of lower die 4 is equipped with lower mold core 5, and the lower die 4 on 5 top of lower mold core is equipped with type chamber 6, the center of lower mold core 5
Equipped with the mandril 3 for releasing forging.The end face of upper mold 1 and the end face of lower die 4 are plane, the end face of upper mold 1 and the end face of lower die 4
It fits.4 end face of lower die is equipped with groove 7, and groove 7 is distributed in a ring on 4 end face of lower die, and groove 7 is adjacent with type chamber 6.Work
When making, round bar is placed in the type chamber 6 of lower die 4, upper mold 1 and lower die 4 mold, and convex 2 of upper mold 1 by round bar to type chamber
6 two sides squeeze, and centre residual small part bar completes blocking processing finally by mandril 3 by forging blank pushing out type chamber 6.
The present invention replaces steel tube extrusion using round bar blocker forging, and equipment needed for reducing finish forging hits tonnage, drop
Low production cost.Preform Die can be bar proper storage in type chamber two sides, and middle material is largely arranged to two sides to improve
Utilization rate of raw materials realizes that small tonnage plants produce the purpose of big workpiece.
The above is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention.This field it is common
Technical staff is appreciated that without departing from the principle and spirit of the present invention can be a variety of to the progress of these embodiments
Variation, modification, replacement and deformation.The scope of the present invention is defined by the claims and their equivalents.
Claims (5)
1. a kind of Preform Die of automobile gearbox internal gear, including upper die and lower die, it is characterised in that: the upper mold bottom
Center is equipped with protrusion, and the center of the lower die is equipped with lower mold core, and the lower die on lower mold core top is equipped with type chamber, lower die
The center of core is equipped with the mandril for releasing forging；The end face of the upper mold and the end face of lower die are plane, the end face of upper mold
It fits with the end face of lower die, the lower die end face is equipped with groove.
2. a kind of Preform Die of automobile gearbox internal gear according to claim 1, it is characterised in that: the protrusion is close
Like in reverse frustoconic.
3. a kind of Preform Die of automobile gearbox internal gear according to claim 1 or 2, it is characterised in that: described convex
It rises and is connected with upper mold end face by circular arc.
4. a kind of Preform Die of automobile gearbox internal gear according to claim 1, it is characterised in that: the groove exists
Lower die is distributed in a ring on end face.
5. a kind of Preform Die of automobile gearbox internal gear according to claim 1 or 4, it is characterised in that: described recessed
Slot is adjacent with type chamber.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225629.9A CN109848351A (en) | 2019-03-25 | 2019-03-25 | A kind of Preform Die of automobile gearbox internal gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910225629.9A CN109848351A (en) | 2019-03-25 | 2019-03-25 | A kind of Preform Die of automobile gearbox internal gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109848351A true CN109848351A (en) | 2019-06-07 |
Family
ID=66901734
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910225629.9A Withdrawn CN109848351A (en) | 2019-03-25 | 2019-03-25 | A kind of Preform Die of automobile gearbox internal gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN109848351A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976729A (en) * | 2019-12-25 | 2020-04-10 | 江西景航航空锻铸有限公司 | Forging method and closed upsetting-extruding die for disc cantilever forge pieces |
-
2019
- 2019-03-25 CN CN201910225629.9A patent/CN109848351A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110976729A (en) * | 2019-12-25 | 2020-04-10 | 江西景航航空锻铸有限公司 | Forging method and closed upsetting-extruding die for disc cantilever forge pieces |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WW01 | Invention patent application withdrawn after publication |
Application publication date: 20190607 |
|
| WW01 | Invention patent application withdrawn after publication |