CN208033543U - It is buckled to the engage gear one step forming cold closed-die forging mould of tooth form - Google Patents
It is buckled to the engage gear one step forming cold closed-die forging mould of tooth form Download PDFInfo
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- CN208033543U CN208033543U CN201721888858.1U CN201721888858U CN208033543U CN 208033543 U CN208033543 U CN 208033543U CN 201721888858 U CN201721888858 U CN 201721888858U CN 208033543 U CN208033543 U CN 208033543U
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Abstract
The utility model discloses a kind of engage gear one step forming cold closed-die forging moulds of back-off tooth form, it includes upper mold, blank, conical plug, stress set, tooth matrix, lower die, ring pads, mandril, housing and backing plate.The lower die is round casing cavity plate, and the lower die being vertically arranged is placed in the middle part of backing plate upper surface, and ring lower die inner wall is arranged in order the tooth matrix of vertically-arranged.The bottom plate upper surface is equipped with twice concentric circle holes, interior counterbore location and installation conical plug, and outer counterbore places ring pads, and ring pads are by mandril floating support.The conical plug is locked on backing plate, constitutes the Wedge type mobile guide structure to tooth matrix, and tooth matrix moves down positioning forging and stamping soldered tooth, moves up and radially expand demoulding along oblique angle, this structure solves the problems, such as that back-off tooth form demoulding is difficult.The utility model is a step excellent suitability for press forming mold, completes soldered tooth forming through once forging and pressing, both reduces production process, improve production efficiency, and avoid the forging and stamping error repeatedly shaped, be remarkably improved blank excellent suitability for press forming precision.
Description
Technical field
The present invention relates to a kind of designs of cold closed-die forging mode structure, in particular it relates to a kind of forging and stamping gear and a step
The cold closed-die forging mould of forming, especially a kind of engage gear one step forming cold closed-die forging mould for precision forging back-off tooth form.
Background technology
Engage gear in automobile gearbox is one of the critical component in shift speed change system, which is a kind of collection circle
Column tooth, cone tooth and soldered tooth are in the composite construction gear of one.The gear of such structure is located at small end because axial dimension is limited
Engage gear does not set escape, when processing can not withdrawing, so metal-removing process can not achieve forming.Now, one's own profession
Industry generally makees the forming of engage gear using hot forging plus cold-finishing technique.The prior art is very ripe, can realize conventional knot
The engage gear batch machining of structure.But a kind of novel engage gear with back-off tooth form, because there is back-off in tooth-shape structure
The reason of tooth form, implements the prior art and there is demoulding difficulty, needs to make STRUCTURE DECOMPOSITION, increase process.Although forging and pressing energy stage by stage
It is enough to realize forming, but production efficiency is remarkably decreased, and thus increases production cost.
Invention content
The problem of forging and stamping work efficiency is low step by step present invention is generally directed to the prior art, forging and stamping quality defect, proposes a kind of structure
Simply, the engage gear one step forming cold closed-die forging mould for the back-off tooth form that excellent suitability for press forming is good, demoulding is easy, production efficiency is high.
The present invention is achieved through the following technical solutions technical goal.
It is buckled to the engage gear one step forming cold closed-die forging mould of tooth form, it includes upper mold, blank, conical plug, stress set, tooth mould
Piece, lower die, ring pads, mandril, housing and backing plate.The upper mold is a kind of punch-pin, it is located on the blank of horizontal, and blank is to set
There is one end of soldered tooth to place downward, thes improvement is that：The lower die is round casing cavity plate, outer wall assemblage stress set and outer
Set constitutes reinforced structure, and lower die endoporus epimere is equipped with open taper hole, and the lower die being vertically arranged is placed in the middle part of backing plate upper surface, ring lower die
Inner wall is arranged in order the tooth matrix of vertically-arranged.Twice concentric circles counterbore is equipped in the middle part of the backing plate upper surface, interior counterbore is for positioning
The conical plug being tightened by bolts is installed, the ring pads of one of clearance fit, the mandril that ring pads are vertically arranged by 4~8 are placed in outer counterbore
Floating support.The conical plug is the conical shaft part of up big and down small structure, and outer wall is equal with the bevel angle α that tooth matrix coordinates,
Bolt is locked conical plug and is constituted to tooth matrix inclined mobile guide structure.The tooth matrix is strip plate, and upper end is jagged
Side is equipped with the tooth mould of soldered tooth to be forged and pressed, and two sides, along bevel edge, have one side of oblique angle β and conical plug outer wall to coordinate, have tiltedly for one
One side of angle α coordinates with lower die hole wall, constitutes tooth matrix and moves down positioning forging and stamping engagement toothing, moves up then along bevel angle α and oblique angle β
Radially expand demoulding.
As the scheme that is further improved, the bevel angle α and oblique angle β are equal, angle 50~150。
Compared with prior art, the present invention having the positive effect that：
1, built-in Wedge type mobile guide is simple in structure, is easy to make, mobile flexibly and reliable；
2, tooth matrix radially expands, and is convenient for blank quicker de-mold after soldered tooth excellent suitability for press forming, improves forging and stamping efficiency；
3, an excellent suitability for press forming not only reduces process, but also improves blank excellent suitability for press forming precision.
Description of the drawings
Fig. 1 is structure of the invention diagrammatic cross-section, and wherein left side is that tooth matrix is in ejection state, and right side is tooth mould
Piece is in forging and stamping soldered tooth state.
Fig. 2 is the planar structure schematic diagram of tooth matrix in Fig. 1.
Fig. 3 is the side view of Fig. 2.
Specific implementation mode
Below according to embodiment shown in the drawings, the present invention is further described.
The engage gear one step forming cold closed-die forging mould of back-off tooth form shown in FIG. 1, it includes upper mold 1, blank 2, conical plug
3, stress set 4, tooth matrix 5, lower die 6, ring pads 7, mandril 8, housing 9 and backing plate 10.The upper mold 1 is a kind of punch-pin, it is located at
On the blank 2 of horizontal, blank 2 is placed downward with one end equipped with soldered tooth.The lower die 6 is round casing cavity plate, outer wall set
It fills stress set 4 and housing 9 constitutes reinforced structure.6 endoporus epimere of lower die is equipped with open taper hole, and the lower die 6 being vertically arranged is placed in backing plate
10 upper centers, 6 inner wall of ring lower die are arranged in order the tooth matrix 5 of vertically-arranged.The backing plate 10 is the basic part in structure, it is located at
Under lower die 6, stress set 4, and coordinate with housing 9.Backing plate 10 is both basic part and setting element in structure, upper surface
Middle part is equipped with twice concentric circles counterbore, and the interior counterbore for being in center is used for the conical plug 3 that location and installation is tightened by bolts, outside
The ring pads 7 of one of clearance fit are placed in counterbore.Ring pads 7 are that the positioning datum that tooth matrix 5 is installed in groups and tooth matrix 5 are same
The basic part of moved further in order to ensure 7 precision translation of ring pads, therefore uses uniformly distributed mandril 8 to support, and the present embodiment is equal using 6
The mandril 8 of cloth supports.Since mandril 8 is pushed by external power plant, according to the up and down movement of operating mode, such floating support knot
Structure can ensure that tooth matrix 5 is acted by operating mode.The conical plug 3 is the conical shaft part of up big and down small structure, outer wall and tooth mould
The bevel angle α that piece 5 coordinates is equal, and bolt locks Wedge type mobile guide structure of the composition of conical plug 3 to tooth matrix 5.The tooth mould
Piece 5 directly forges and presses soldered tooth, and the jagged side in such strip plate upper end is equipped with the tooth mould of soldered tooth to be forged and pressed, two sides one
Along bevel edge, there is one side of bevel angle α to coordinate with 3 outer wall of conical plug, there is one side of oblique angle β to coordinate with 6 hole wall of lower die.It is in the present invention
Accomplish 5 gapless guiding movement of tooth matrix, bevel angle α=oblique angle β in structure, α=β=7 ° in the present embodiment.
In actual use, blank 2 is put into the matrix cavity of lower die 6 first, then upper mold 1 moves downward, and blank 2 is pressurized
After so that engagement tooth portion and outer circle is obtained precision forging, then upper mold 1 moves up, at this time mandril 8 synchronize rise push ring pads 7, by ring
The Wedge type mobile guide structure motion that pad 7 pushes one group of tooth matrix 5 preset along mould, tooth matrix 5 rise along bevel angle α and oblique angle
β is radially expanded, and realizes demoulding.Such demolding structure that radially expands fully solves the problems, such as that back-off tooth form demoulding is difficult, and the present invention is
One step excellent suitability for press forming mold completes soldered tooth forming through once forging and pressing, both reduces production process, improve production efficiency,
And the forging and stamping error repeatedly shaped is avoided, it is remarkably improved excellent suitability for press forming precision.
Claims (2)
1. a kind of engage gear one step forming cold closed-die forging mould of back-off tooth form, it includes upper mold（1）, blank（2）, conical plug（3）,
Stress set（4）, tooth matrix（5）, lower die（6）, ring pads（7）, mandril（8）, housing（9）And backing plate（10）；The upper mold（1）It is one
Kind punch-pin, it is located at the blank of horizontal（2）On, blank（2）It is placed downward with one end equipped with soldered tooth, it is characterised in that：
The lower die（6）For round casing cavity plate, outer wall assemblage stress set（4）And housing（9）Constitute reinforced structure, lower die（6）On endoporus
Section is equipped with open taper hole, the lower die being vertically arranged（6）It is placed in backing plate（10）In the middle part of upper surface, ring lower die（6）Inner wall is arranged in order vertical
The tooth matrix set（5）；The backing plate（10）Twice concentric circles counterbore is equipped in the middle part of upper surface, interior counterbore is used for location and installation spiral shell
The tight conical plug of bolt-lock（3）, the ring pads of one of clearance fit are placed in outer counterbore（7）, ring pads（7）The mandril being vertically arranged by 4~8
（8）Floating support；The conical plug（3）For the conical shaft part of up big and down small structure, outer wall and tooth matrix（5）What is coordinated is oblique
Angle α is equal, and bolt locks conical plug（3）It constitutes to tooth matrix（5）Inclined mobile guide structure；The tooth matrix（5）For length
Bar shaped plate, the jagged side in upper end are equipped with the tooth mould of soldered tooth forge and press, two sides for one along bevel edge, have one side of oblique angle β with
Conical plug（3）Outer wall coordinates, and has one side and the lower die of bevel angle α（6）Hole wall coordinates, and constitutes tooth matrix（5）Positioning forging and stamping are moved down to connect
Toothing is closed, moves up, demoulding is radially expanded along bevel angle α and oblique angle β.
2. the engage gear one step forming cold closed-die forging mould of back-off tooth form according to claim 1, it is characterised in that：The tooth
Matrix（5）Bevel angle α and oblique angle β it is equal, angle 50~150。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721888858.1U CN208033543U (en) | 2017-12-29 | 2017-12-29 | It is buckled to the engage gear one step forming cold closed-die forging mould of tooth form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721888858.1U CN208033543U (en) | 2017-12-29 | 2017-12-29 | It is buckled to the engage gear one step forming cold closed-die forging mould of tooth form |
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| Publication Number | Publication Date |
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| CN208033543U true CN208033543U (en) | 2018-11-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201721888858.1U Active CN208033543U (en) | 2017-12-29 | 2017-12-29 | It is buckled to the engage gear one step forming cold closed-die forging mould of tooth form |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876680A (en) * | 2017-12-29 | 2018-04-06 | 江苏太平洋精锻科技股份有限公司 | The engage gear one step forming cold closed-die forging mould of back-off tooth form |
-
2017
- 2017-12-29 CN CN201721888858.1U patent/CN208033543U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107876680A (en) * | 2017-12-29 | 2018-04-06 | 江苏太平洋精锻科技股份有限公司 | The engage gear one step forming cold closed-die forging mould of back-off tooth form |
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