CN107639196A - A kind of out star wheel forging finishing mold - Google Patents
A kind of out star wheel forging finishing mold Download PDFInfo
- Publication number
- CN107639196A CN107639196A CN201711010823.2A CN201711010823A CN107639196A CN 107639196 A CN107639196 A CN 107639196A CN 201711010823 A CN201711010823 A CN 201711010823A CN 107639196 A CN107639196 A CN 107639196A
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- Prior art keywords
- annular punch
- drift
- star wheel
- out star
- finishing
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Abstract
The invention provides a kind of out star wheel forging finishing mold, and it is used to realize the head shaping to out star wheel forging, and the finishing mold includes upper bolster and the finishing cavity plate being arranged on below the upper bolster.Drift set is connected with the upper bolster, hollow annular punch is worn in the drift set, drift core is equipped with the annular punch, the annular punch can slide up and down along the drift set, the upper end of the drift core is fixedly attached on the upper bolster, offers the joint-cutting of some lower surfaces for extending to the annular punch on the outer wall of the annular punch vertically.Shaping die cavity of the middle part of the finishing cavity plate formed with the head for accommodating the out star wheel, the shaping die cavity are coaxially disposed with the annular punch.When the drift set moves up, the lower end of the annular punch is opened by the drift stud；When the drift set moves down, the lower end of the annular punch closes up.
Description
Technical field
The present invention relates to precision metal to forge field, more particularly to a kind of out star wheel forging finishing mold.
Background technology
Out star wheel is the strength member that torque is transmitted in constant velocity cardan joint, and the power of engine passes through universal joint from speed changer
It is delivered to wheel.It refer to shown in Fig. 1 and Fig. 2, it illustrates a kind of structure of typical out star wheel 100, the out star wheel 100
Including bar portion 101 and positioned at the head 102 of described one end of bar portion 101, the upper end on the head 102 be recessed it is broad in the middle, two
Small head cavity 103 is held, the inwall of the head cavity 103 shows hexapetalous flower line shape.
Because the head cavity 103 of out star wheel 100 is special construction small in the end and big in the middle, common extrusion die,
After completing the extrusion forming of head cavity 103, the head cavity 103 of forging firmly will be wrapped on drift, can not be removed.Cause
This, it is in the prior art, general to use extruding and knife to cut the shaping that the method that technique is combined completes out star wheel 100, first using crowded
Pressure technique squeezes out cavity profile on the head of forging stock, then using cutting machine to being cut in the middle part of cavity, to form centre
Greatly, head cavity small in ends.
The shaping efficiency that knife cuts technique is low, and produces a large amount of waste materials, extends the production cycle of product, improves product
Production cost.Therefore, it is necessary to develop a kind of finishing mold of new out star wheel forging, by the extruding of mould come
Complete the shaping of the head cavity of out star wheel forging.
The content of the invention
In order to solve the above technical problems, the present invention proposes a kind of forming method of out star wheel, its concrete technical scheme is such as
Under：
A kind of out star wheel forging finishing mold, it is used to realize the head shaping to out star wheel forging, the die finish
Has the finishing cavity plate for including upper bolster and being arranged on below the upper bolster.Drift set, the punching are connected with the upper bolster
Hollow annular punch is worn in headgear, drift core is equipped with the annular punch, the annular punch can be along the drift
Set is slided up and down, and the upper end of the drift core is fixedly attached on the upper bolster, on the outer wall of the annular punch vertically
Offer the joint-cutting of some lower surfaces for extending to the annular punch.The middle part of the finishing cavity plate is formed with for accommodating
The shaping die cavity on the head of the out star wheel, the shaping die cavity are coaxially disposed with the annular punch.When the annular punch
When moving up, the lower end of the annular punch is opened by the drift stud；When the annular punch moves down, the ring
The lower end of shape drift closes up.
In a specific embodiment, six joint-cuttings are offered on the outer wall of the annular punch vertically.
In a specific embodiment, guide section of the lower end of the drift core formed with wedge shape, the annular punch
The wedge cavities to match with the shape of the guide section are formed at the bottom of inner chamber.
In a specific embodiment, material returned pawl card is connected with below the finishing cavity plate.
Compared with prior art, out star wheel forging finishing mold proposed by the present invention can be completed in the head of out star wheel
The finishing shaping of chamber, it is effectively shortened the production cycle of out star wheel product, reduces the production cost of out star wheel.
Brief description of the drawings
In order to illustrate the technical solution of the embodiments of the present invention more clearly, need to make described in below embodiment being described
Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for this
For the those of ordinary skill of field, on the premise of not paying creative work, it can also be obtained according to these accompanying drawings other
Accompanying drawing.Wherein：
Fig. 1 is a kind of structural representation of typical out star wheel；
Fig. 2 is the structural representation of the head cavity of the out star wheel in Fig. 1；
Fig. 3 is the structural representation of the finishing mold of the present invention；
Fig. 4 is the annular punch in Fig. 3 and the installation diagram of drift core；
Fig. 5 is the stereoscopic figure of the annular punch in Fig. 3；
Fig. 6 be introduce the present invention finishing mold after out star wheel forging process figure.
Embodiment
In order to facilitate the understanding of the purposes, features and advantages of the present invention, it is below in conjunction with the accompanying drawings and specific real
Applying mode, the present invention is further detailed explanation.
" one embodiment " or " embodiment " referred to herein refers to may be included at least one implementation of the present invention
Special characteristic, structure or characteristic." in one embodiment " that different places occur in this manual not refers both to same
Individual embodiment, nor the single or selective embodiment mutually exclusive with other embodiment.
It refer to described in Fig. 3, the finishing mold in the present invention includes upper bolster 1 and is arranged under the upper bolster 1
The finishing cavity plate 6 of side, wherein：
Drift set 2 is connected with the upper bolster 1, hollow annular punch 4, the ring-type are worn in the drift set 2
Drift core 5 is equipped with drift 4, the annular punch 4 can cover 2 along the drift and slide up and down, and the upper end of the drift core 5 is consolidated
Surely the upper bolster 1 is connected to, offering some vertically on the outer wall of the annular punch 4 extends to the annular punch
Lower surface joint-cutting.
When the annular punch 4 moves up, the lower end of the annular punch 4 is strutted by the drift core 5, and works as ring
When shape drift 4 moves down, the lower end of the annular punch 4 reverts to closed configuration.
Shaping die cavity of the middle part of the finishing cavity plate 6 formed with the head for accommodating the out star wheel, the shaping
Die cavity is coaxially disposed with the annular punch 4.
The shape and size of the lower end of the annular punch 4 and treat finishing out star wheel head cavity target shape and
Size matches.Specifically, as shown in figure 4, the bottom of the annular punch 4 formed with petal-like drift end 41, it is described
Lug boss 42 of the top at drift end 41 formed with outwardly convex, the drift end 41 and lug boss 42 is collectively forming and institute
State the punching structure that the target shape of the head cavity for the out star wheel for treating finishing and size are mutually matched.
In a specific embodiment, as shown in Fig. 2 the inwall of the head cavity for the out star wheel to be molded is hexapetalous flower
Line shape.Therefore, as shown in figure 5, the relative set of drift end 41 is hexapetalous flower lobed shape.The outer wall of the annular punch 4
On offer six joint-cuttings that are parallel, being placed equidistant vertically, every joint-cutting cuts two corresponding, adjacent petals
Open.
Using finishing mold provided by the invention, the finishing to the head cavity of out star wheel can be realized in a manner of extruding
Shaping, so as to the production cost for shortening the production cycle of out star wheel product, reducing out star wheel.
It refer to shown in Fig. 6, after the finishing mold in introducing the present invention, the forging of out star wheel is embarked on journey under process includes
Material, just squeeze, jumping-up, the anti-five processes such as crowded and finishing, wherein：
Described just squeezing is that the forging stock 1 (a) after blanking is carried out using positive extruding mold just to squeeze, so as to obtain having thinner bar
Portion and the forging stock 1 (b) positioned at the thicker head of one end of the rod.
The head that the jumping-up refers to align the forging stock 1 (b) after squeezing using heading die carries out jumping-up, to obtain head upsetting
Forging stock 1 (c) after thick.
Anti- squeeze refers to be squeezed using anti-extruding mold is counter to the head of the forging stock 1 (c) after jumping-up, has head to obtain
The forging stock 1 (d) of portion inner chamber profile.
It is the sizing die intracavitary that the forging stock 1 (d) after anti-squeeze is put into the finishing mold to the present invention that the finishing, which is, right
The head cavity of 1 (d) carries out shaping, to obtain having the forging stock 1 (e) of head cavity small in the end and big in the middle.
Please continue to refer to shown in Fig. 3, the specific operation process for the finishing procedure that finishing mold proposed by the present invention is implemented
It is as follows：
First, upper bolster 1 is up, and the slide downward of annular punch 4 causes the drift end 41 of annular punch lower end to show conjunction
Hold together state.
Then, the head of forging stock 1 (d) is positioned over to the sizing die intracavitary of finishing cavity plate 6, in the head of the forging stock 1 (d)
The opening upwards of chamber.
Then, control the upper bolster 1 descending, until drift end 41 is carried out into the head cavity of forging stock 1 (d) completely,
Now, small gap between drift end 41 and the inwall of head cavity be present, the bottom of lug boss 42 then with forging stock 1 (d)
Top edge is inconsistent.
Then, the upward sliding of annular punch 4 is controlled, drift core 5 enters to the lower end of annular punch 4 and outwardly against described
Drift end 41, the drift end 41 is softened (hexapetalous flower valve point comes) and the inwall to head cavity produces extruding, while raised
Portion 42 also produces extruding to the inwall of head cavity, and under drift end 41 and the combination of extrusion of lug boss 42, head cavity has been able to
It is molded into finishing, obtains the forging stock 1 (e) after shaping.
After completing finishing shaping, the slide downward of annular punch 4 is controlled, drift end 41 recovers to close up again, now, in control
1 up playback of die holder, annular punch 4 smoothly leave the head cavity of the forging stock 1 (e).
In order that the lower end for obtaining drift core 5 smoothly enters the lower end of the inner chamber of annular punch 4, as shown in figure 4, excellent at one
Select in embodiment, guide section 51 of the lower end of the drift core 5 formed with wedge shape, the bottom shape of the inner chamber of the annular punch 4
The wedge cavities to match into the shape with the guide section 51.Certainly, the size of the guide section 51 need to be slightly larger than the wedge shape
The size of chamber, to ensure to strut at the drift end 41.
As shown in figure 4, in a preferred embodiment, in order to realize the clamping of forging stock and discharging, the finishing cavity plate 6
Lower section is connected with material returned pawl card 7.
The description with certain particularity detailed enough has been carried out to the present invention above.Ordinary skill in art
Personnel are it should be understood that what the description in embodiment was merely exemplary, before without departing from true spirit and scope of the present invention
Put make it is all change should all belong to protection scope of the present invention.Scope of the present invention is by described power
What sharp claim was defined, rather than limited by foregoing description in embodiment.
Claims (4)
1. a kind of out star wheel forging finishing mold, it is used to realize the head shaping to out star wheel forging, it is characterised in that：Institute
Stating finishing mold includes upper bolster and the finishing cavity plate being arranged on below the upper bolster,
Drift set is connected with the upper bolster, hollow annular punch is worn in the drift set, is worn in the annular punch
Provided with drift core, the annular punch can slide up and down along the drift set, and the upper end of the drift core is fixedly attached to described
Cutting for some lower surfaces for extending to the annular punch is offered on upper bolster, on the outer wall of the annular punch vertically
Seam；
Shaping die cavity of the middle part of the finishing cavity plate formed with the head for accommodating the out star wheel, the shaping die cavity with
The annular punch is coaxially disposed；
When the annular punch moves up, the lower end of the annular punch is opened by the drift stud；When the ring-type is rushed
When head moves down, the lower end of the annular punch closes up.
2. the forming method of out star wheel as claimed in claim 1, it is characterised in that：On the outer wall of the annular punch vertically
Offer six joint-cuttings.
3. the forming method of out star wheel as claimed in claim 1, it is characterised in that：The lower end of the drift core is formed with wedge shape
Guide section, the wedge cavities to match with the shape of the guide section are formed at the bottom of the inner chamber of the annular punch.
4. the forming method of out star wheel as claimed in claim 1, it is characterised in that：It is connected with and moves back below the finishing cavity plate
Expect pawl card.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010823.2A CN107639196A (en) | 2017-10-25 | 2017-10-25 | A kind of out star wheel forging finishing mold |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711010823.2A CN107639196A (en) | 2017-10-25 | 2017-10-25 | A kind of out star wheel forging finishing mold |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107639196A true CN107639196A (en) | 2018-01-30 |
Family
ID=61124603
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711010823.2A Pending CN107639196A (en) | 2017-10-25 | 2017-10-25 | A kind of out star wheel forging finishing mold |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107639196A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856620A (en) * | 2018-07-26 | 2018-11-23 | 江苏威鹰机械有限公司 | Automobile gimbal out star wheel cold-finishing mold |
| CN110640015A (en) * | 2019-11-15 | 2020-01-03 | 常州洛合精密机械有限公司 | Progressive die fine blanking method |
| CN114309442A (en) * | 2021-11-16 | 2022-04-12 | 上海纳铁福传动***有限公司 | Milling-free machining method for ball path of inner star wheel of automobile universal joint |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5659556A (en) * | 1979-10-18 | 1981-05-23 | Komatsu Ltd | Forging method of parts having undercut |
| US5697245A (en) * | 1994-07-16 | 1997-12-16 | Maeng; Hyuk Jae | Apparatus for forge-forming outer-ring of constant velocity joint and method thereof |
| JPH10323734A (en) * | 1997-05-28 | 1998-12-08 | Unisia Jecs Corp | Forming equipment for cup like socket |
| CN102861861A (en) * | 2011-07-06 | 2013-01-09 | 张太良 | Precision-forging plastic molding technology of bell shell of ball-cage type universal joint |
| CN103447445A (en) * | 2013-09-20 | 2013-12-18 | 江苏海宇机械有限公司 | Cold forging finishing punch for inner cavities of finish-forge pieces of outer spherical cages |
| CN206326073U (en) * | 2016-12-23 | 2017-07-14 | 上海纳铁福传动***有限公司 | A kind of universal joint forging cold extrusion device for discharging |
| CN207464083U (en) * | 2017-10-25 | 2018-06-08 | 江苏理研科技股份有限公司 | A kind of out star wheel forging finishing mold |
-
2017
- 2017-10-25 CN CN201711010823.2A patent/CN107639196A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5659556A (en) * | 1979-10-18 | 1981-05-23 | Komatsu Ltd | Forging method of parts having undercut |
| US5697245A (en) * | 1994-07-16 | 1997-12-16 | Maeng; Hyuk Jae | Apparatus for forge-forming outer-ring of constant velocity joint and method thereof |
| JPH10323734A (en) * | 1997-05-28 | 1998-12-08 | Unisia Jecs Corp | Forming equipment for cup like socket |
| CN102861861A (en) * | 2011-07-06 | 2013-01-09 | 张太良 | Precision-forging plastic molding technology of bell shell of ball-cage type universal joint |
| CN103447445A (en) * | 2013-09-20 | 2013-12-18 | 江苏海宇机械有限公司 | Cold forging finishing punch for inner cavities of finish-forge pieces of outer spherical cages |
| CN206326073U (en) * | 2016-12-23 | 2017-07-14 | 上海纳铁福传动***有限公司 | A kind of universal joint forging cold extrusion device for discharging |
| CN207464083U (en) * | 2017-10-25 | 2018-06-08 | 江苏理研科技股份有限公司 | A kind of out star wheel forging finishing mold |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108856620A (en) * | 2018-07-26 | 2018-11-23 | 江苏威鹰机械有限公司 | Automobile gimbal out star wheel cold-finishing mold |
| CN110640015A (en) * | 2019-11-15 | 2020-01-03 | 常州洛合精密机械有限公司 | Progressive die fine blanking method |
| CN114309442A (en) * | 2021-11-16 | 2022-04-12 | 上海纳铁福传动***有限公司 | Milling-free machining method for ball path of inner star wheel of automobile universal joint |
| CN114309442B (en) * | 2021-11-16 | 2023-08-11 | 上海纳铁福传动***有限公司 | Milling-free machining method for ball channel of inner star wheel of automobile universal joint |
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20180130 |