CN105983638A - Spiral bevel gear forging device - Google Patents

Spiral bevel gear forging device Download PDF

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Publication number
CN105983638A
CN105983638A CN201510040450.8A CN201510040450A CN105983638A CN 105983638 A CN105983638 A CN 105983638A CN 201510040450 A CN201510040450 A CN 201510040450A CN 105983638 A CN105983638 A CN 105983638A
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China
Prior art keywords
die
bevel gear
spiral bevel
gear forging
unit
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CN201510040450.8A
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Chinese (zh)
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CN105983638B (en
Inventor
张灿勋
张婉琪
蔡盛祺
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Metal Industries Research and Development Centre
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Metal Industries Research and Development Centre
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Abstract

A spiral bevel gear forging device is used for forming a blank. The spiral bevel gear forging device includes a first die unit and a releasing unit. The first die unit includes a first die core and a first punch rod which is movably arranged through the first die core, wherein one end of the first punch rod is pressed against the bottom of the blank. The releasing unit includes at least one push against mechanism for driving the first die core to rotate with the first punch rod as a shaft, and a driving mechanism, wherein the driving mechanism can push the push against mechanism and the first punch rod to allow the push against mechanism to drive the first die core and the first punch rod to rotate so as to push out the blank. The integrality of the first punch rod and the first die core will not be destroyed in design.

Description

Spiral bevel gear forging apparatus
Technical field
The present invention relates to a kind of forging apparatus, particularly relate to one and stock is shaped to spiral umbrella The forging apparatus of gear.
Background technology
The molding of spiral bevel gear in the past is mostly to be processed as master with machine cut, but this kind adds Work mode can waste more material, and needs complicated processing procedure and tediously long process time, effect Rate is relatively low, and because working angles makes metallic fiber cut-off and discontinuous, therefore the finished product processed Structural strength is relatively low.Typically dealer is many carries out extrusion forming in forging mode, yet with spiral shell Rotation bevel gear has a screw serrated form of negative draft angle, therefore when withdrawing pattern cannot direct demold, make Obtain screw serrated form to need additionally with Tool in Cutting, cause such as the shortcoming of aforementioned machining.
And propose at present the forging mode of direct demold to be broadly divided into two kinds, one is to rotate The spiral bevel gear that jumper bar pushing and withstanding machine so that it is the teeth groove in die rotates de- Mould, but this kind of mode need to arrange such as the transmission components such as gear on jumper bar, and also need to coordinate motor, The assemblies such as tooth bar or refining bar, configuration is complicated and destroys jumper bar intensity, and another kind of method is the most right Jumper bar is processed to keep jumper bar intensity, change rotate die and with jumper bar spiral bevel gear ejected with The demoulding, though but this kind of mode can keep jumper bar intensity, need separately die to be bored a hole, dig Grooves etc. are processed, and destroy die intensity and closure on the contrary, still need to improve.
Summary of the invention
It is an object of the invention to provide a kind of spiral bevel gear holding jumper bar and die integrity Forging apparatus.
Spiral bevel gear forging apparatus of the present invention, in order to one stock of molding, this spiral bevel gear Forging apparatus comprises first die unit, and a demoulding unit, this first die unit Including one in order to put the first die of this stock, and one wears this first mould movably The first jumper bar bottom core and this stock of one end contact, this demoulding unit interlocks this first die, It is characterized in that: this spiral bevel gear forging apparatus also comprises at least one can drive this first mould The pushing and pressing mechanism that core rotates with this first jumper bar for axle, and a drive mechanism, this drive mechanism Can move between a shaping position and an ejection position controllably, when this drive mechanism by This shaping position, towards when moving between this ejection position, can promote this pushing and pressing mechanism and this first punching Bar, makes this pushing and pressing mechanism drive this first die to rotate relative to this first jumper bar, and make this This stock is ejected this first die by one jumper bar.
It is preferred that said spiral bevel gear forging apparatus, wherein this drive mechanism has one and holds Connecing the die pad of this first jumper bar, this pushing and pressing mechanism has one and this first die can be promoted to rotate The first slide block, and on a die pad being arranged at this drive mechanism and this first slide block of contact The second slide block.
It is preferred that said spiral bevel gear forging apparatus, wherein this first slide block has a basis Body, and first oblique surface being arranged on this body and sticking to this second slide block, should Second slide block has second oblique surface sticking to this first oblique surface.
It is preferred that said spiral bevel gear forging apparatus, wherein this first die outer rim is convexly equipped with Multiple driving sections in profile of tooth, this first slide block also have one be arranged on this body and with The tooth-strip part of described driving section engagement.
It is preferred that said spiral bevel gear forging apparatus, wherein this first jumper bar has a card It is placed in bottom this stock to limit the positioning end that this stock rotates.
It is preferred that said spiral bevel gear forging apparatus, wherein this first die unit also includes The first die holder that one this first die of confession is arranged, and two ends this first jumper bar of contact respectively And the first elastic component of this first die.
It is preferred that said spiral bevel gear forging apparatus, wherein this spiral bevel gear forging apparatus Also comprise second die unit involutory with this first die unit, this second die unit Including second die holder involutory with this first die holder, one be arranged in this second die holder also Second die involutory with this first die, one be arranged at this second die holder in and wear this Second jumper bar of two dies, and one be arranged in this second die holder and two ends contact respectively this Two die holders and the second elastic component of this second die.
It is preferred that said spiral bevel gear forging apparatus, wherein this first cunning of this pushing and pressing mechanism Block is arranged in this first die holder, and this pushing and pressing mechanism also has one and is arranged on this first slide block Return unit.
It is preferred that said spiral bevel gear forging apparatus, wherein this drive mechanism also has at least One two ends this die pad of contact and the playback elastic component of this first die holder respectively.
It is preferred that said spiral bevel gear forging apparatus, wherein this first die unit also includes At least one is placed between this first die holder and this first die, alleviate this first die and this The revolving part of frictional force between one die holder, this drive mechanism also has one and is arranged on this die pad Knock-pin, this knock-pin wears this first die holder towards the direction away from this first jumper bar.
The beneficial effects of the present invention is: by this pushing and pressing mechanism can make this first die with this One jumper bar is that axle rotates, and then this stock ejects this first die completes the demoulding, in design It is not required to destroy this first jumper bar and the integrity of this first die.
Accompanying drawing explanation
Fig. 1 is a sectional view, and an enforcement of spiral bevel gear forging apparatus of the present invention is described Example;
Fig. 2 is a top view, and first die of the present embodiment and a pushing and pressing machine are described Structure;
Fig. 3 is a partial enlarged drawing, in order to aid in illustrating in Fig. 1 A at imagination wire frame;
Fig. 4 is a sectional view, and the matched moulds forming process in the present embodiment is described;And
Fig. 5 is a sectional view, and the knockout course in the present embodiment is described.
Detailed description of the invention
Below in conjunction with the accompanying drawings and embodiment the present invention is described in detail.
Refering to Fig. 1 and Fig. 2, for an embodiment of spiral bevel gear forging apparatus of the present invention, And in the present embodiment, this spiral bevel gear forging apparatus 1 is to adopt vertical type to arrange to facilitate Bright, but be not limited.This spiral bevel gear forging apparatus 1, comprises a first mould list 2, second die unit 3 involutory with this first die unit 2 of unit, and a setting Demoulding unit 4 in this first die unit 2.This first die unit 2 includes one The first die 22, one that one die holder 21, is arranged in this first die holder 21 may move Wear 23, two ends of the first jumper bar this first jumper bar of contact respectively of this first die 22 23 and the first elastic component 24 of this first die 22, and three be placed in this first die holder 21 And between this first die 22, alleviate the revolving part 25 of frictional force.This first die 22 outer rim be as It is convexly equipped with multiple driving section 221 in profile of tooth as shown in Figure 2.This first jumper bar 23 has necessarily Position end 231, this positioning end 231 is not circular, and can be ellipse, rectangle, triangle, Or other shape.Described revolving part 25 is bearing in the present embodiment, but is not limited.
This second die unit 3 include second die holder 31 involutory with this first die holder 21, In one is arranged at this second die holder 31 and second die 32 involutory with this first die 22, In one is arranged at this second die holder 31 and wear the second jumper bar 33 of this second die 32, and In one is arranged at this second die holder 31 and two ends this second die holder 31 of contact respectively and this second Second elastic component 34 of die 32.
This demoulding unit 4 includes a drive mechanism 41, and two pushing and pressing mechanisms 42.This drives Motivation structure 41 have one be arranged at this first die holder 21 in and accept this first jumper bar 23 Die pad 411, one is arranged at this die pad 411 face in contrast to this first jumper bar 23 The knock-pin 412 of this first die holder 21 above and is worn towards the direction away from this first jumper bar 23, And two two ends this die pad 411 of contact and the playback elastic components of this first die holder 21 respectively 413.This knock-pin 412 connects the power source such as cylinder or oil hydraulic cylinder and can be relative to this first mould Seat 21 moves up and down.Each pushing and pressing mechanism 42 has an one end and this first die 22 421, two ends of the first slide block of being meshed of described driving section 221 contact respectively this first Slide block 421 and the second slide block 422 of this die pad 411, and one wear this first die holder 21 And it is fixed on the return unit 423 on this first slide block 421.Described first slide block 421 is such as figure It is spaced and be arranged in parallel shown in 2.Fig. 3 is the partial enlarged drawing of A at Fig. 1 imagination wire frame. Each first slide block 421 has a body 424, and is arranged on this body 424 And engage the tooth-strip part 425 of described driving section 221, and one is arranged on this body 424 And stick to the first oblique surface 426 of this second slide block 422 as illustrated in fig. 3.This second slide block 422 have second oblique surface 427 sticking to this first oblique surface 426 as illustrated in fig. 3.
Refering to Fig. 1 and Fig. 4, the operating procedure of the present invention is as follows: first this stock B is inserted tool In having first die 22 of screw serrated form feature of negative draft angle, then by this second die unit 3 Lower pressure makes it involutory with this first die unit 2, now this first die holder 21 and this second mould Seat about 31 is the most involutory.This first die 22 and this second die 32 are involutory.Now should First jumper bar 23 and the second jumper bar 33 are bottom and the tops laying respectively at this stock B.Then Carry out forging molding, drive this second die unit 3 to press under continuing, make this second jumper bar 33 It is pressed down against this stock B and the first jumper bar 23 with upwards contact this stock B coordinates, extruding This stock B makes it deform, and fills uniformly with in this first die 22, and then molds Flute profile feature as shown in Figure 4 and be shaped to a spiral bevel gear.At this second die unit During 3 times pressures, this second elastic component 34 can by the pushing and pressing of this second die holder 31 quilt Compression, and then produce the elasticity forcing this second die 32 to be close to this first die 22 partially Shifting power, make this first die 22 and the second die 32 during forging molding be mutually tight against And it is airtight.
Refering to Fig. 2, Fig. 3, and Fig. 5, after completing forging molding, by this second die unit 3 (see Fig. 4) upwards reset, and start power source (not shown) and make this drive mechanism 41 by one Shaping position as shown in Figure 4 moves to an ejection position as shown in Figure 5, moves at this During, the knock-pin 412 of this drive mechanism 41 promotes this die pad 411 to move up, And drive described second slide block 422 and this first jumper bar 23 upwards pushing and withstanding, make described second to slide Described second oblique surface 427 of block 422 described first oblique with described first slide block 421 respectively Guide face 426 produces Relative sliding, and the direction making described first slide block 421 towards each other close is moved Dynamic, by intermeshing described tooth-strip part 425 and described driving section 221, make this first mould Core 22 rotates for axle with this first jumper bar 23 along the flute profile characteristic direction of this stock B.And be somebody's turn to do The positioning end 231 of the first jumper bar 23 is the bottom being placed in this stock B, and by this location The shape of end 231 makes the stock B being inserted to rotate, to coordinate this first die 22 This stock B is ejected this first die 22 and completes stripping action by spinning movement.In this driving Mechanism 41 is moved to this ejection position by this shaping position, this first elastic component 24, Described playback elastic component 413, and described return unit 423 compressed, and complete in stripping action Make this first jumper bar 23, this die pad 411 after one-tenth respectively, and described first slide block 421 resets. This location mechanism can avoid this first die 22 cannot go back to after rotating in situ, and can Processing without recalibration, lifting processing precision is the most time-consuming the most next time.
Shape is increasingly complex, chi only to need a passage to mold by the mechanism of rotating stripping demoulding Very little more accurate forging, and solve negative draft angle forging and be difficult to the problem of the demoulding, and it is not required to volume Outer machining and can save material, reduce molding passage and reduce cost.And at forging molding Time this first die 22 and this second die 32 be air-tight state, therefore forging can reduce hair in a large number Bian Liang, metal streamline along forging contoured profile, thus can avoid forging streamline end to expose, Improve the mechanical performance of forging.
In sum, by described first slide block 421 and the gearing of described second slide block 422, This first die 22 can be made to rotate for axle with this first jumper bar 23, and then this stock B is ejected This first die 22 completes the demoulding, be not required in design to destroy this first jumper bar 23 and this first The integrity of die 22, promotes intensity and degree of accuracy, and the negative draft angle of solution is difficult to the demoulding Problem, therefore really can reach the purpose of the present invention.

Claims (10)

1. a spiral bevel gear forging apparatus, in order to one stock of molding, this spiral umbrella Gear forging device comprises first die unit, and a demoulding unit, this first mould Tool unit include one in order to the first die putting this stock, and one wears movably The first jumper bar bottom this first die and this stock of one end contact, this demoulding unit interlocks should First die, it is characterised in that: this spiral bevel gear forging apparatus also comprises at least one can Drive the pushing and pressing mechanism that this first die rotates for axle, and a driving machine with this first jumper bar Structure, this drive mechanism can move controllably between a shaping position and an ejection position, When this drive mechanism by this shaping position towards when moving between this ejection position, these pushing and pressing can be promoted Mechanism and this first jumper bar, make this pushing and pressing mechanism drive this first die relative to this first punching Bar rotates, and makes this first jumper bar that this stock to eject this first die.
Spiral bevel gear forging apparatus the most according to claim 1, it is characterised in that: This drive mechanism has a die pad accepting this first jumper bar, and this pushing and pressing mechanism has one Individual the first slide block promoting this first die to rotate, and one be arranged at this drive mechanism On die pad and the second slide block of this first slide block of contact.
Spiral bevel gear forging apparatus the most according to claim 2, it is characterised in that: This first slide block has a body, and one be arranged on this body and stick to this First oblique surface of two slide blocks, this second slide block has one and sticks to the of this first oblique surface Two oblique surfaces.
Spiral bevel gear forging apparatus the most according to claim 3, it is characterised in that: This first die outer rim is convexly equipped with multiple driving section in profile of tooth, and this first slide block also has one The individual tooth-strip part being arranged on this body and engage with described driving section.
Spiral bevel gear forging apparatus the most according to claim 1, it is characterised in that: This first jumper bar has one and is placed in bottom this stock to limit the location that this stock rotates End.
Spiral bevel gear forging apparatus the most according to claim 2, it is characterised in that: This first die unit also includes the first die holder that this first die of a confession is arranged, and one Two ends this first jumper bar of contact and the first elastic component of this first die respectively.
Spiral bevel gear forging apparatus the most according to claim 6, it is characterised in that: This spiral bevel gear forging apparatus also comprises second mould involutory with this first die unit Tool unit, this second die unit include second die holder involutory with this first die holder, One be arranged in this second die holder and second die involutory with this first die, one set It is placed in this second die holder and wears the second jumper bar of this second die, and one is arranged at this In second die holder and two ends this second die holder of contact respectively and the second elasticity of this second die Part.
Spiral bevel gear forging apparatus the most according to claim 7, it is characterised in that: This first slide block of this pushing and pressing mechanism is arranged in this first die holder, and this pushing and pressing mechanism also has One return unit being arranged on this first slide block.
Spiral bevel gear forging apparatus the most according to claim 2, it is characterised in that: This drive mechanism also has at least one two ends respectively this die pad of contact and this first die holder Playback elastic component.
Spiral bevel gear forging apparatus the most according to claim 6, it is characterised in that: This first die unit also includes that at least one is placed in this first die holder and this first die Between, alleviate the revolving part of frictional force, this drive mechanism between this first die and this first die holder Also having a knock-pin being arranged on this die pad, this knock-pin is towards away from this first punching The direction of bar wears this first die holder.
CN201510040450.8A 2015-01-27 2015-01-27 Spiral bevel gear forging apparatus Active CN105983638B (en)

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Application Number Priority Date Filing Date Title
CN201510040450.8A CN105983638B (en) 2015-01-27 2015-01-27 Spiral bevel gear forging apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201510040450.8A CN105983638B (en) 2015-01-27 2015-01-27 Spiral bevel gear forging apparatus

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CN105983638A true CN105983638A (en) 2016-10-05
CN105983638B CN105983638B (en) 2018-06-26

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106583558A (en) * 2016-12-21 2017-04-26 宁波市北仑怡健模具制造有限公司 Automobile gear die
CN109420733A (en) * 2017-08-28 2019-03-05 丰田自动车株式会社 The forging forming method of gear and the forge forming device of gear
CN111069428A (en) * 2018-10-22 2020-04-28 财团法人金属工业研究发展中心 Composite press forming device

Citations (6)

* Cited by examiner, † Cited by third party
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
JP2542912B2 (en) * 1988-08-30 1996-10-09 本田技研工業株式会社 Gear teeth ironing method
EP0891824A1 (en) * 1996-11-11 1999-01-20 Honda Giken Kogyo Kabushiki Kaisha Hot forging device for bevel gear
JP2002001479A (en) * 2000-06-19 2002-01-08 Akira Yoshida Manufacturing device for spiral bevel gear
CN1511069A (en) * 2001-03-29 2004-07-07 毕晓普创新有限公司 Forging method and apparatus
CN101284299A (en) * 2008-05-21 2008-10-15 华中科技大学 Gear-box planetary gear shaping die

Patent Citations (6)

* Cited by examiner, † Cited by third party
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
JP2542912B2 (en) * 1988-08-30 1996-10-09 本田技研工業株式会社 Gear teeth ironing method
EP0891824A1 (en) * 1996-11-11 1999-01-20 Honda Giken Kogyo Kabushiki Kaisha Hot forging device for bevel gear
JP2002001479A (en) * 2000-06-19 2002-01-08 Akira Yoshida Manufacturing device for spiral bevel gear
CN1511069A (en) * 2001-03-29 2004-07-07 毕晓普创新有限公司 Forging method and apparatus
CN101284299A (en) * 2008-05-21 2008-10-15 华中科技大学 Gear-box planetary gear shaping die

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN106583558A (en) * 2016-12-21 2017-04-26 宁波市北仑怡健模具制造有限公司 Automobile gear die
CN109420733A (en) * 2017-08-28 2019-03-05 丰田自动车株式会社 The forging forming method of gear and the forge forming device of gear
CN111069428A (en) * 2018-10-22 2020-04-28 财团法人金属工业研究发展中心 Composite press forming device
CN111069428B (en) * 2018-10-22 2021-08-10 财团法人金属工业研究发展中心 Composite press forming device

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