CN107876680A - The engage gear one step forming cold closed-die forging mould of back-off tooth form - Google Patents
The engage gear one step forming cold closed-die forging mould of back-off tooth form Download PDFInfo
- Publication number
- CN107876680A CN107876680A CN201711467645.6A CN201711467645A CN107876680A CN 107876680 A CN107876680 A CN 107876680A CN 201711467645 A CN201711467645 A CN 201711467645A CN 107876680 A CN107876680 A CN 107876680A
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- Prior art keywords
- tooth
- mould
- matrix
- conical plug
- forging
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- 238000005242 forging Methods 0.000 title claims abstract description 25
- 239000011159 matrix material Substances 0.000 claims abstract description 28
- 238000007667 floating Methods 0.000 claims abstract description 4
- 238000009434 installation Methods 0.000 claims abstract description 3
- 238000004519 manufacturing process Methods 0.000 abstract description 7
- 238000003825 pressing Methods 0.000 abstract description 2
- 238000000034 method Methods 0.000 description 4
- 238000010276 construction Methods 0.000 description 2
- BYACHAOCSIPLCM-UHFFFAOYSA-N 2-[2-[bis(2-hydroxyethyl)amino]ethyl-(2-hydroxyethyl)amino]ethanol Chemical group OCCN(CCO)CCN(CCO)CCO BYACHAOCSIPLCM-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000000354 decomposition reaction Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000008092 positive effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
Abstract
The invention discloses a kind of engage gear one step forming cold closed-die forging mould of back-off tooth form, and it includes upper mould, blank, conical plug, stress set, tooth matrix, lower mould, ring pads, push rod, overcoat and backing plate.The lower mould is round casing cavity plate, and the lower mould being vertically arranged is placed in the middle part of backing plate upper surface, and mould inwall is arranged in order the tooth matrix of vertically-arranged under ring.The bottom plate upper surface is provided with twice concentric circle holes, interior counterbore location and installation conical plug, and outer counterbore lays ring pads, and ring pads are by push rod floating support.The conical plug is locked on backing plate, forms 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 the demoulding along oblique angle, and this structure solves the problems, such as that the demoulding of back-off tooth form is difficult.The present invention is a step excellent suitability for press forming mould, completes soldered tooth forming through once forging and pressing, both reduces production process, improve production efficiency, and avoids the forging and stamping error repeatedly shaped, is remarkably improved blank excellent suitability for press forming precision.
Description
Technical field
The present invention relates to a kind of design 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 shaping, particularly 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 critical component in shift speed change system, and the gear is a kind of collection circle
Post tooth, cone tooth and soldered tooth are in the composite construction gear of one.The gear of such a structure is because axial dimension is limited, positioned at small end
Engage gear does not set escape, during processing can not withdrawing, so metal-removing process can not realize forming.Now, one's own profession
Industry generally adds cold-finishing technique to make the forming of engage gear using hot forging.Prior art is very ripe, can realize conventional knot
The engage gear batch machining of structure.But a kind of new engage gear with back-off tooth form, because back-off be present in tooth-shape structure
The reason for tooth form, implement prior art and demoulding difficulty be present, it is necessary to make STRUCTURE DECOMPOSITION, increase process.Although energy is forged and pressed stage by stage
It is enough to realize forming, but production efficiency is remarkably decreased, and thus increases production cost.
The content of the invention
Present invention is generally directed to prior art substep forging and stamping work efficiency it is low, forge and press quality defect the problem of, propose 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, the demoulding is easy, production efficiency is high.
The present invention is achieved through the following technical solutions technical goal.
The engage gear one step forming cold closed-die forging mould of back-off tooth form, it includes upper mould, blank, conical plug, stress set, tooth mould
Piece, lower mould, ring pads, push rod, overcoat and backing plate.The upper mould is a kind of punch-pin, and it is located on the blank of horizontal, and blank is to set
The one end for having soldered tooth is placed down, and it is theed improvement is that：The lower mould is round casing cavity plate, outer wall assemblage stress set and outer
Set forms reinforced structure, and lower mould endoporus epimere is provided with open taper hole, and the lower mould being vertically arranged is placed in the middle part of backing plate upper surface, mould under ring
Inwall is arranged in order the tooth matrix of vertically-arranged.Twice concentric circles counterbore is provided with the middle part of the bottom plate upper surface, interior counterbore is used to position
The conical plug being tightened by bolts is installed, the ring pads that one of gap coordinates are laid in outer counterbore, ring pads are by 4~8 push rods being vertically arranged
Floating support.The conical plug is the conical shaft part of up big and down small structure, and its outer wall is equal with the bevel angle α for going out matrix cooperation,
Bolt locking conical plug is formed to tooth matrix inclined mobile guide structure.The tooth matrix is strip plate, and upper end is jagged
Side is provided with the tooth mould of soldered tooth to be forged and pressed, and for one along hypotenuse, the one side and conical plug outer wall for having oblique angle β coordinate, had tiltedly for two sides
Angle α one side coordinates with lower nib wall, and composition tooth matrix moves down positioning forging and stamping engagement toothing, moves up along bevel angle α and β radial directions
Absolve mould.
As further improvement project, the cone angle and β angles are equal, and its angle is 50~150。
The present invention compared with prior art, has the positive effect that：
1st, built-in Wedge type mobile guide is simple in construction, it is easy to make, mobile flexibly and reliable；
2nd, tooth matrix radially expands, and is easy to blank quicker de-mold after soldered tooth excellent suitability for press forming, improves forging and stamping efficiency；
3rd, an excellent suitability for press forming, process is both reduced, improves blank excellent suitability for press forming precision again.
Brief description of the drawings
Fig. 1 is structural profile illustration of the present invention, 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 Fig. 2 side view.
Embodiment
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 mould 1, blank 2, conical plug
3rd, stress set 4, tooth matrix 5, lower mould 6, ring pads 7, push rod 8, overcoat 9 and backing plate 10.The upper mould 1 is a kind of punch-pin, and it is located at
On the blank 2 of horizontal, blank 2 is placed down with one end provided with soldered tooth.The lower mould 6 is round casing cavity plate, outer wall set
Fill stress set 4 and overcoat 9 forms reinforced structure.The lower endoporus epimere of mould 6 is provided with open taper hole, and the lower mould 6 being vertically arranged is placed in backing plate
10 upper centers, the inwall of mould 6 is arranged in order the tooth matrix 5 of vertically-arranged under ring.The bottom plate 10 is the basic part in structure, and it is located at
Under lower mould 6, stress set 4, and coordinate with overcoat 9.Bottom plate 10 is both the basic part in structure, and setting element, upper surface
Middle part is provided 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 that one of gap coordinates are laid in counterbore.Ring pads 7 are the positioning datums that tooth matrix 5 is installed in groups, and tooth matrix 5 is same
The basic part of moved further, in order to ensure the precision translation of ring pads 7, therefore supported using uniform push rod 8, the present embodiment is equal using 6
The push rod 8 of cloth supports.Because push rod 8 is by the promotion of external power set, according to the up and down movement of operating mode, such a 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, its outer wall and tooth mould
The bevel angle α that piece 5 coordinates is equal, and bolt locking conical plug 3 forms the Wedge type mobile guide structure to tooth matrix 5.The tooth mould
Piece 5 directly forges and presses soldered tooth, and such a jagged side in strip plate upper end is provided with the tooth mould of soldered tooth to be forged and pressed, and two sides are one
Along hypotenuse, the one side and the outer wall of conical plug 3 for having bevel angle α coordinate, and the one side and the lower hole wall of mould 6 for having oblique angle β coordinate.It is in the present invention
Accomplish tooth matrix 5 gapless guiding movement, bevel angle α=β in structure, α=β=7 ° in the present embodiment.
During actual use, blank 2 is put into the matrix cavity of lower mould 6 first, then upper mould 1 moves downward, and blank 2 is pressurized
After make engagement tooth portion and it is cylindrical obtain precision forging, then upper mould 1 moves up, and now synchronous rise of push rod 8 promotes ring pads 7, by ring
Pad 7 promotes one group of tooth matrix 5 Wedge type mobile guide structure motion preset along mould, and tooth matrix 5 rises along bevel angle α and β footpaths
To opening, the demoulding is realized.Such a demolding structure that radially expands fully solves the problems, such as that the demoulding of back-off tooth form is difficult, and the present invention is a step
Excellent suitability for press forming mould, soldered tooth forming is completed through once forging and pressing, both reduces production process, improves production efficiency, and
The forging and stamping error repeatedly shaped is avoided, 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 mould（1）, blank（2）, conical plug（3）、
Stress set（4）, tooth matrix（5）, lower mould（6）, ring pads（7）, push rod（8）, overcoat（9）And backing plate（10）；The upper mould（1）It is one
Kind punch-pin, it is located at the blank of horizontal（2）On, blank（2）Placed down with one end provided with soldered tooth, it is characterised in that：
The lower mould（6）For round casing cavity plate, outer wall assemblage stress set（4）And overcoat（9）Form reinforced structure, lower mould（6）On endoporus
Section is provided with open taper hole, the lower mould being vertically arranged（6）It is placed in backing plate（10）In the middle part of upper surface, mould under ring（6）Inwall is arranged in order vertical
The tooth matrix put（5）；The bottom plate（10）Twice concentric circles counterbore is provided with 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 that one of gap coordinates are laid in outer counterbore（7）, ring pads（7）By 4~8 push rods being vertically arranged
（8）Floating support；The conical plug（3）For the conical shaft part of up big and down small structure, its outer wall is with going out matrix（5）What is coordinated is oblique
Angle α is equal, bolt locking conical plug（3）Form to tooth matrix（5）Inclined mobile guide structure；The tooth matrix（5）For length
Bar shaped plate, the jagged side in upper end are provided with the tooth mould of soldered tooth forge and press, two sides for one along hypotenuse, have oblique angle β one side with
Conical plug（3）Outer wall coordinates, and has one side of bevel angle α and lower mould（6）Hole wall coordinates, and forms tooth matrix（5）Positioning forging and stamping are moved down to connect
Toothing is closed, moves up and radially expands the demoulding along bevel angle α and 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 cone
Angle α and β angle is equal, and its angle is 50~150。
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711467645.6A CN107876680A (en) | 2017-12-29 | 2017-12-29 | The engage gear one step forming cold closed-die forging mould of back-off tooth form |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711467645.6A CN107876680A (en) | 2017-12-29 | 2017-12-29 | The engage gear one step forming cold closed-die forging mould of back-off tooth form |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN107876680A true CN107876680A (en) | 2018-04-06 |
Family
ID=61770237
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711467645.6A Pending CN107876680A (en) | 2017-12-29 | 2017-12-29 | The engage gear one step forming cold closed-die forging mould of back-off tooth form |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN107876680A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311633A (en) * | 2018-04-17 | 2018-07-24 | 苏州大学 | A kind of big specification straight bevel gear multistep former |
| CN108907054A (en) * | 2018-06-29 | 2018-11-30 | 安徽宜安精密机械零部件有限公司 | A kind of spring base finish forge mould |
| CN110252931A (en) * | 2019-07-25 | 2019-09-20 | 安徽安簧机械股份有限公司 | A kind of annular compound post rod mechanism |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050283A (en) * | 1974-06-20 | 1977-09-27 | Bayerisches Leichtmetallwerk Graf Blucher Von Wahlstatt Kg | Method and apparatus for forging bevel gears |
| CN101428326A (en) * | 2008-12-08 | 2009-05-13 | 江苏太平洋精密锻造有限公司 | Tooth form finishing and back taper forming die for automobile reverse gear intermediate gear |
| CN202028730U (en) * | 2011-02-24 | 2011-11-09 | 江苏太平洋精锻科技股份有限公司 | Whole inverted cone forming die for automobile transmission engaging gear |
| CN206425470U (en) * | 2017-01-25 | 2017-08-22 | 兴化市鑫翔机械有限公司 | 31 flute profile moulds are forged in a kind of backward extrusion for being applied to slidably engage set |
| CN208033543U (en) * | 2017-12-29 | 2018-11-02 | 江苏太平洋精锻科技股份有限公司 | It is buckled to the engage gear one step forming cold closed-die forging mould of tooth form |
-
2017
- 2017-12-29 CN CN201711467645.6A patent/CN107876680A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4050283A (en) * | 1974-06-20 | 1977-09-27 | Bayerisches Leichtmetallwerk Graf Blucher Von Wahlstatt Kg | Method and apparatus for forging bevel gears |
| CN101428326A (en) * | 2008-12-08 | 2009-05-13 | 江苏太平洋精密锻造有限公司 | Tooth form finishing and back taper forming die for automobile reverse gear intermediate gear |
| CN202028730U (en) * | 2011-02-24 | 2011-11-09 | 江苏太平洋精锻科技股份有限公司 | Whole inverted cone forming die for automobile transmission engaging gear |
| CN206425470U (en) * | 2017-01-25 | 2017-08-22 | 兴化市鑫翔机械有限公司 | 31 flute profile moulds are forged in a kind of backward extrusion for being applied to slidably engage set |
| CN208033543U (en) * | 2017-12-29 | 2018-11-02 | 江苏太平洋精锻科技股份有限公司 | It is buckled to the engage gear one step forming cold closed-die forging mould of tooth form |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108311633A (en) * | 2018-04-17 | 2018-07-24 | 苏州大学 | A kind of big specification straight bevel gear multistep former |
| CN108311633B (en) * | 2018-04-17 | 2023-11-10 | 苏州大学 | Multi-step forming equipment for large-specification straight bevel gear |
| CN108907054A (en) * | 2018-06-29 | 2018-11-30 | 安徽宜安精密机械零部件有限公司 | A kind of spring base finish forge mould |
| CN110252931A (en) * | 2019-07-25 | 2019-09-20 | 安徽安簧机械股份有限公司 | A kind of annular compound post rod mechanism |
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Application publication date: 20180406 |