CN203526435U - Bevel gear shaft forging die - Google Patents
Bevel gear shaft forging die Download PDFInfo
- Publication number
- CN203526435U CN203526435U CN201320597935.3U CN201320597935U CN203526435U CN 203526435 U CN203526435 U CN 203526435U CN 201320597935 U CN201320597935 U CN 201320597935U CN 203526435 U CN203526435 U CN 203526435U
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- China
- Prior art keywords
- mandrel
- base plate
- die
- backing plate
- push rod
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Abstract
The utility model discloses a bevel gear shaft forging die which comprises an upper die body, a lower die body, a pressing plate, a mandrel, a base plate, a die holder and an ejection rod. The middle of the base plate is provided with an axial through hole in clearance fit with the ejection rod, the base plate is horizontally arranged at the bottom of a concave cavity in the upward end face of the die holder, the lower die body is inserted into the concave cavity of the die holder and is axially positioned on the basis of the base plate, and the pressing plate clamped onto the outer wall of the lower die body in a sleeved mode is connected with the die holder. The mandrel is axially inserted into a die cavity of the lower die body from top to bottom until the base plate is axially limited, the ejection rod is a thin and long rod relative to the mandrel and penetrates through the through hole in the middle of the base plate to be connected with the mandrel to form a whole, the gravity of the structure is low, and the mandrel can conveniently reset after a workpiece is ejected out. Due to the fact that the diameter of the ejection rod is much smaller than that of the mandrel, the ejection rod is as small as the hole of the base plate, accordingly, the contact area of the mandrel and the base plate is increased, plastic deformation of the base plate in forging and pressing is avoided, and forging quality of a workpiece is guaranteed.
Description
Technical field
The utility model relates to a kind of excellent suitability for press forming mould, and specifically, the utility model relates to a kind of for forging the mould of axle head bevel gear.
Background technology
Output shaft in automotive transmission is the axle part that one end is provided with bevel gear, for this type of, produces axle part, and the state-of-the-art production technology of the industry is to adopt die forging to realize bevel gear production, after forging forming, by the push rod of mold bottom, is ejected.The counterdie die cavity of prior art is by mandrel axial location workpiece, and counterdie props up on backing plate, and because of the corresponding mandrel of backing plate, place leaves the through hole for push rod axially-movable, adds axle diameter and push rod diameter is poor less, therefore the through hole on backing plate and axle diameter are poor also less.During forging, backing plate and mandrel junction unit are pressure are large, continue forging and stamping generation plastic deformation more and more, mandrel initial position is sunk gradually, consequently the axial region of follow-up forging than before forging axial region longer, cause the tooth portion that is in top to fill out and be discontented with die cavity and form waste product because lacking material.For fear of producing unnecessary waste product, in forging process, operative employee will often detect forging ' s block dimension, and the backing plate of changing respective thickness according to real time status is from returning to normal production.Although prior art is adjustable, can reaches and produce expection.But above-mentioned adjustment all take that to stop production be cost, the production order is disturbed, and certainly leads to certain economic loss.In addition, mandrel and push rod Split type structure, after forging forming is ejected, the mandrel that L/D ratio value is very little easily gets stuck in backhaul process, can not get back to original position, and operative employee disposes mandrel return will consume man-hour equally.Generally speaking, prior art production efficiency is low, can not meet batch production requirements.
Utility model content
The utility model, mainly for the deficiencies in the prior art, proposes the bevel gear shaft forging die of a kind of mandrel and push rod conjuncted structure, and the backing plate of this forging die and mandrel faying face are large, and unit are pressure is little, and backing plate does not produce plastic deformation, the constant product quality forging.On the other hand, because mandrel connects push rod, push rod is the tenesmus of mandrel, and structural focus is low, and mandrel return is easy, without getting stuck phenomenon, therefore production efficiency is high.
The utility model is achieved through the following technical solutions technical goal.
Bevel gear shaft forging die, the die cavity vertically-arranged of this forging die, it comprises upper die and lower die, pressing plate, mandrel, backing plate, die holder and push rod.Described backing plate is flat part, plate face is provided with the axially extending bore with push rod matched in clearance between two parties, backing plate horizontal is the cavity bottom towards upper surface at die holder, and counterdie inserts in die holder cavity and take backing plate as basic axial location, and the pressing plate being fastened on counterdie outer wall connects die holder formation overall structure.Its improvements are: described mandrel axially inserts from top to bottom in the die cavity of counterdie until backing plate axial limiting, and the push rod that is elongate rod with respect to mandrel runs through backing plate through hole placed in the middle and mandrel links into an integrated entity.
In said structure, the diameter of push rod is 1/4～1/3 of axle diameter, and because push rod diameter is little, the hole that backing plate through hole placed in the middle coordinates with push rod is also little, thereby strengthens the contact area of mandrel and backing plate, and the object that reduces unit are pressure reduces distortion exactly.
The utility model compared with prior art, has following good effect:
1, mandrel is connected with push rod, simple in structure, makes easily;
2, mandrel is connected with push rod, and push rod is the hanger of mandrel, and structural focus is low, and mandrel return is easy, without getting stuck phenomenon;
3, push rod diameter, much smaller than mandrel, strengthens the contact area of mandrel and backing plate, and reducing unit are pressure is exactly not allow backing plate produce plastic deformation when forging and stamping.
Accompanying drawing explanation
Fig. 1 is the utility model structural profile schematic diagram.
The specific embodiment
Below with reference to the accompanying drawings and in conjunction with the embodiments, the utility model is described in further detail.
Bevel gear shaft forging die shown in Fig. 1, the die cavity vertically-arranged of this forging die, it comprises patrix 1, counterdie 2, pressing plate 3, mandrel 4, backing plate 5, die holder 6 and push rod 7.Described backing plate 5 is flat part, plate face is provided with the axially extending bore with push rod matched in clearance between two parties, backing plate 5 horizontal are the cavity bottom towards upper surface at die holder 6, counterdie 2 inserts in die holder 6 cavitys and take backing plate 5 as basic axial location, and the pressing plate 3 being fastened on counterdie 2 outer walls connects die holder 6 formation overall structures.Push rod 7 is elongate rod with respect to mandrel 4, and the diameter of push rod 7 is 1/4～1/3 of mandrel 4 diameters, and in the present embodiment, push rod 7 diameters are 30mm, and mandrel 4 is 10mm.Described mandrel 4 axially inserts in the die cavity of counterdie 2 from top to bottom, and mandrel 4 is finally by backing plate 5 axial limitings, and push rod 7 runs through backing plate 5 through hole placed in the middle and mandrel 4 links into an integrated entity.In the utility model, push rod 7 diameters are little more many than mandrel 4 diameters, therefore too little of the hole that push rod 7 coordinates with backing plate 5, thereby the contact area that strengthens mandrel 4 and backing plate 5, directly reduces backing plate 5 unit are pressure, its result is exactly when forging and stamping, not allow backing plate 5 produce plastic deformations.Backing plate 5 remains design thickness, guarantees that workpiece 8 shaft part length dimensions are constant.Because workpiece 8 shaft part sizes remain unchanged, the bevel gear forging quality that is positioned at top has had guarantee, there will not be top to lack the problem that material causes flank of tooth deficiency.In addition, the direct connecting mandrel 4 of push rod 7, push rod 7 is suspended on mandrel 4 belows, and this structural focus is low.After workpiece 8 is swaged into, by pushing away mandrel 4 on push rod 7, make workpiece 8 demouldings, because mandrel 4 is connected with push rod 7, structural focus is low, makes mandrel 4 returns that diameter and lenth ratio are very little easy, there will not be the phenomenon that gets stuck, and guarantees to forge and normally carries out.
Claims (2)
1. a bevel gear shaft forging die, the die cavity vertically-arranged of this forging die, it comprises patrix (1), counterdie (2), pressing plate (3), mandrel (4), backing plate (5), die holder (6) and push rod (7); Described backing plate (5) is flat part, plate face is provided with the axially extending bore with push rod matched in clearance between two parties, backing plate (5) horizontal is the cavity bottom towards upper surface at die holder (6), counterdie (2) inserts in die holder (6) cavity and take backing plate (5) as basic axial location, and the pressing plate (3) being fastened on counterdie (2) outer wall connects die holder (6) formation overall structure; It is characterized in that: described mandrel (4) axially inserts from top to bottom in the die cavity of counterdie (2) until backing plate (5) axial limiting, with respect to mandrel (4), run through backing plate (5) through hole placed in the middle and mandrel (4) links into an integrated entity for the push rod of elongate rod (7).
2. bevel gear shaft forging die according to claim 1, is characterized in that: the diameter of described push rod (7) is 1/4～1/3 of mandrel (4) diameter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597935.3U CN203526435U (en) | 2013-09-27 | 2013-09-27 | Bevel gear shaft forging die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320597935.3U CN203526435U (en) | 2013-09-27 | 2013-09-27 | Bevel gear shaft forging die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203526435U true CN203526435U (en) | 2014-04-09 |
Family
ID=50412697
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320597935.3U Expired - Lifetime CN203526435U (en) | 2013-09-27 | 2013-09-27 | Bevel gear shaft forging die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203526435U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107252829A (en) * | 2017-08-14 | 2017-10-17 | 郑州机械研究所 | The accurate near-net-shape technique and device of a kind of bevel gear shaft |
| CN114472782A (en) * | 2022-02-14 | 2022-05-13 | 章丘市宝华锻造有限公司 | Output gear shaft forging process |
| CN114535479A (en) * | 2022-03-01 | 2022-05-27 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Forging method of large arc die forging |
-
2013
- 2013-09-27 CN CN201320597935.3U patent/CN203526435U/en not_active Expired - Lifetime
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| CN107252829A (en) * | 2017-08-14 | 2017-10-17 | 郑州机械研究所 | The accurate near-net-shape technique and device of a kind of bevel gear shaft |
| CN107252829B (en) * | 2017-08-14 | 2023-03-14 | 郑州机械研究所有限公司 | Precise near-net forming process and device for bevel gear shaft |
| CN114472782A (en) * | 2022-02-14 | 2022-05-13 | 章丘市宝华锻造有限公司 | Output gear shaft forging process |
| CN114535479A (en) * | 2022-03-01 | 2022-05-27 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Forging method of large arc die forging |
| CN114535479B (en) * | 2022-03-01 | 2023-11-28 | 中国第二重型机械集团德阳万航模锻有限责任公司 | Forging method of large arc die forging |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140409 |