CN107838350A - A kind of forming method of out star wheel - Google Patents
A kind of forming method of out star wheel Download PDFInfo
- Publication number
- CN107838350A CN107838350A CN201711007431.0A CN201711007431A CN107838350A CN 107838350 A CN107838350 A CN 107838350A CN 201711007431 A CN201711007431 A CN 201711007431A CN 107838350 A CN107838350 A CN 107838350A
- Authority
- CN
- China
- Prior art keywords
- finishing
- star wheel
- head
- annular punch
- forging stock
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J13/00—Details of machines for forging, pressing, or hammering
- B21J13/02—Dies or mountings therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/025—Closed die forging
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21J—FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES
- B21J5/00—Methods for forging, hammering, or pressing; Special equipment or accessories therefor
- B21J5/02—Die forging; Trimming by making use of special dies ; Punching during forging
- B21J5/027—Trimming
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21K—MAKING FORGED OR PRESSED METAL PRODUCTS, e.g. HORSE-SHOES, RIVETS, BOLTS OR WHEELS
- B21K1/00—Making machine elements
- B21K1/28—Making machine elements wheels; discs
Abstract
The invention provides a kind of forming method of out star wheel, it include blanking, just squeeze, jumping-up, it is anti-squeeze and finishing, described just squeezing is the forging stock after blanking to be carried out just squeezing to shape bar portion and positioned at the head of one end of the rod；The jumping-up is that the head for aligning the forging stock after squeezing carries out jumping-up；Anti- squeeze is to carry out anti-squeeze to form head cavity profile to the head of the forging stock after jumping-up；The finishing is that the forging stock after anti-squeeze is put into the sizing die intracavitary of finishing mold, shaping is carried out to the head cavity of the forging stock, to form head cavity small in the end and big in the middle.Compared with prior art, the forming method of out star wheel proposed by the present invention, it uses the finishing shaping of the head cavity of finishing mold completion out star wheel, so as to the production cost for shortening the production cycle of out star wheel product, reducing out star wheel.
Description
Technical field
The present invention relates to precision metal to forge field, more particularly to a kind of forming method of out star wheel.
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 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 existing production technology is improved.
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 forming method of out star wheel, it includes blanking, just squeezed, jumping-up, anti-crowded and finishing, and described just squeeze is to blanking
Rear forging stock just squeeze to shape bar portion and positioned at the head of one end of the rod；The jumping-up is the head for aligning the forging stock after squeezing
Carry out jumping-up；Anti- squeeze is to carry out anti-squeeze to form head cavity profile to the head of the forging stock after jumping-up；The finishing is
Forging stock after anti-squeeze is put into the sizing die intracavitary of finishing mold, shaping is carried out to the head cavity of the forging stock, to be formed
Head cavity small in the end and big in the middle.
Further, the finishing mold for finishing procedure includes upper bolster and is arranged on below the upper bolster
Finishing cavity plate.Drift set is connected with the upper bolster, hollow annular punch, the annular punch are worn in the drift set
Drift core is inside equipped with, the annular punch can be slided up and down along the drift set, and the upper end of the drift core is fixedly attached to
The upper bolster, some lower surfaces for extending to the annular punch are offered on the outer wall of the annular punch vertically
Joint-cutting, when the annular punch moves up, the lower end of the annular punch is opened by the drift stud.The finishing cavity plate
Shaping die cavity of the middle part formed with the head for accommodating the out star wheel, the shaping die cavity and the annular punch are coaxial
Set.
Further, six joint-cuttings are offered on the outer wall of the annular punch vertically.
Further, guide section of the lower end of the drift core formed with wedge shape, the bottom of the inner chamber of the annular punch
Form the wedge cavities to match with the shape of the guide section.
Further, material returned pawl card is connected with below the finishing cavity plate.
Further, the shape of the bottom of the annular punch and size and treat finishing out star wheel head cavity
Target shape and size match.
Compared with prior art, the forming method of out star wheel proposed by the present invention, it uses finishing mold to complete out star wheel
Head cavity finishing shaping, which shorten the production cycle of out star wheel product, reduce 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 forming process figure of the out star wheel in the present invention；
Fig. 4 be the present invention in finishing procedure used in finishing mold structural representation；
Fig. 5 is the annular punch in Fig. 4 and the installation diagram of drift core；
Fig. 6 is the stereoscopic figure of the annular punch in Fig. 4.
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.
The present invention by the knife in existing production technology cut technique replace with using finishing mold complete finishing process, its energy
Shaped by extruding the head cavity of out star wheel with completing finishing, be effectively shortened the production cycle of out star wheel product, reduce
The production cost of out star wheel product.
Refer to shown in Fig. 3, it is the forming process figure of the out star wheel in the present invention.Out star wheel proposed by the present invention into
Type method, it includes blanking, just squeezed, 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 that the forging stock 1 (d) after anti-squeeze is put into the sizing die intracavitary of finishing mold, to 1 (d) that the finishing, which is,
Head cavity carry out shaping, to obtain that there is the forging stock 1 (e) of head cavity small in the end and big in the middle.
Because above-mentioned positive extruding mold, heading die and anti-extruding mold are known described in persons skilled in the art
Existing conventional extrusion mould, it needs only to the shape of corresponding die cavity carrying out accommodation.It is in addition, above-mentioned
Positive extruding mold, heading die and anti-extruding mold are not protection scope of the present invention, therefore this specification is no longer to these moulds yet
Structure be described in detail.
As described in the background section, the key of the invention that can be able to successful implementation is the special knot of finishing mold
Structure, therefore the concrete structure of the finishing mold will be hereafter described in detail.
It refer to described in Fig. 4, 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 supportted by the drift core 5
Open.
And when annular punch 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 5, 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.
Because the inwall of the head cavity for the out star wheel in the present embodiment, to be shaped is the hexapetalous flower line shape shown in Fig. 2
Shape, therefore, as shown in fig. 6, the relative set of drift end 41 is hexapetalous flower lobed shape.Edge on the outer wall of the annular punch 4
Six joint-cuttings that are parallel, being placed equidistant axially are offered, every joint-cutting cuts two corresponding, adjacent petals
Open.
Please continue to refer to shown in Fig. 4, the operation principle of finishing mold of the invention 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 in the die cavity of finishing cavity plate 6, the head cavity of the forging stock 1 (d)
Opening upwards.
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 separates) 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
Shaped into finishing, obtain forging stock 1 (e)
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).
As a preferred embodiment, in order that the lower end for obtaining drift core 5 smoothly enters under the inner chamber of annular punch 4
Hold, in the present embodiment, as shown in figure 5, guide section 51 of the lower end of the drift core 5 formed with wedge shape, the annular punch 4
The wedge cavities to match with the shape of the guide section 51 are formed at the bottom of inner chamber.Certainly, the size outline of the guide section 51
More than the size of the wedge cavities, to ensure to strut at the drift end 41.
As a preferred embodiment, in order to realize the clamping of forging stock and discharging, as shown in figure 4, in the present embodiment, it is described
The lower section of finishing cavity plate 6 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 (5)
- A kind of 1. forming method of out star wheel, it is characterised in that：It includes blanking, just squeezed, jumping-up, anti-crowded and finishing procedure, its In：Described just squeezing is the forging stock after blanking to be carried out just to squeeze to form bar portion and positioned at the head of one end of the rod；The jumping-up is that the head for aligning the forging stock after squeezing carries out jumping-up；Anti- squeeze is to carry out anti-squeeze to form head cavity to the head of the forging stock after jumping-up；The finishing is that the forging stock after anti-squeeze is put into the sizing die intracavitary of finishing mold, and the head cavity of the forging stock is entered Row shaping, to form head cavity small in the end and big in the middle.
- 2. the forming method of out star wheel as claimed in claim 1, it is characterised in that：The finishing mold for finishing procedure Including upper bolster and the finishing cavity plate being arranged on below the upper bolster, wherein：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 Upper bolster, cutting for some lower surfaces for extending to the annular punch is offered on the outer wall of the annular punch vertically Seam, when the annular punch moves up, the lower end of the annular punch is opened by the drift stud；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.
- 3. 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.
- 4. 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.
- 5. 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 |
|---|---|---|---|
| CN201711007431.0A CN107838350A (en) | 2017-10-25 | 2017-10-25 | A kind of forming method of out star wheel |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711007431.0A CN107838350A (en) | 2017-10-25 | 2017-10-25 | A kind of forming method of out star wheel |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107838350A true CN107838350A (en) | 2018-03-27 |
Family
ID=61662924
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711007431.0A Pending CN107838350A (en) | 2017-10-25 | 2017-10-25 | A kind of forming method of out star wheel |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107838350A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058310A (en) * | 2018-07-26 | 2018-12-21 | 江苏威鹰机械有限公司 | Automobile gimbal out star wheel and its manufacturing process and cold-finishing mold |
Citations (6)
| 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 | 上海纳铁福传动系统有限公司 | A kind of universal joint forging cold extrusion device for discharging |
-
2017
- 2017-10-25 CN CN201711007431.0A patent/CN107838350A/en active Pending
Patent Citations (6)
| 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 | 上海纳铁福传动系统有限公司 | A kind of universal joint forging cold extrusion device for discharging |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109058310A (en) * | 2018-07-26 | 2018-12-21 | 江苏威鹰机械有限公司 | Automobile gimbal out star wheel and its manufacturing process and cold-finishing mold |
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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 | ||
| RJ01 | Rejection of invention patent application after publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20180327 |