CN107008836A - A kind of spiral bevel gear rotary roll method - Google Patents
A kind of spiral bevel gear rotary roll method Download PDFInfo
- Publication number
- CN107008836A CN107008836A CN201710233202.4A CN201710233202A CN107008836A CN 107008836 A CN107008836 A CN 107008836A CN 201710233202 A CN201710233202 A CN 201710233202A CN 107008836 A CN107008836 A CN 107008836A
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- CN
- China
- Prior art keywords
- bevel gear
- spiral bevel
- pendulum
- yaw
- rotary roll
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Classifications
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- 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
-
- 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
- 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
- B21K1/30—Making machine elements wheels; discs with gear-teeth
- B21K1/305—Making machine elements wheels; discs with gear-teeth helical
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Forging (AREA)
- Gears, Cams (AREA)
Abstract
The invention discloses a kind of spiral bevel gear rotary roll method, the spiral bevel gear rolles over mould rotary roll by pendulum, the yaw and pendulum that the pendulum rolles over mould and includes being oppositely arranged up and down roll over lower mould, the yaw makees circular motion, the pendulum rolles over lower mould and makees straight-line feed motion upwards, and the rotary roll method comprises the following steps：Spiral bevel gear blank is placed between yaw and the lower mould of pendulum rolling, the tooth form of the spiral bevel gear is swung by the yaw to be shaped, the spiral bevel gear back relative with its tooth form is by the lower contour forming of pendulum rolling.The present invention can make crystal grain refinement, streamline fine and close, so that gear mechanism performance is greatly enhanced, and plastic force is small, profile accuracy is high, die life is high, easy mold release, has the advantages that production efficiency is high, stock utilization is high, cost is low.
Description
Technical field
The invention belongs to gear forming manufacturing technology field, and in particular to a kind of spiral bevel gear rotary roll method.
Background technology
Spiral bevel gear is geometry and is driven most complicated gear, and with transmission efficiency, overlap coefficient is big, carry
The remarkable advantage such as ability height, stable drive, long lifespan, noise be small, Aeronautics and Astronautics, naval vessel, high ferro, wind-powered electricity generation, superior automobile,
The high-end equipment field such as high-grade lathe is widely used.The complicated geometry of spiral bevel gear is manufactured to it to be proposed sternness and chooses
War, faces three below bottleneck problem if using Integral die-forged figuration manufacture：(1) because spiral bevel gear tooth form is complicated,
Metal flow is difficult in its forming process easily there is deformation dead band, therefore tooth form is difficult to be full of；(2) plastic force is big, profile accuracy
Low, die life is low；(3) it is stripped because tooth form is spiral, after gear forming difficult.Above three bottleneck problem is seriously constrained
The development of spiral angle gear accurate Forming Theory and technology, causes spiral bevel gear to realize that precision form is manufactured.At present,
Spiral bevel gear mainly carries out Milling Process using special purpose machine tool, and still, Milling Process stock utilization is low, low production efficiency,
Importantly, Milling Process is unable to crystal grain thinning tissue, it is impossible to form fine and close metal streamline, thus be difficult to manufacture high-performance
Spiral bevel gear.
It is incremental forming new technology to put rolling, with plastic force is small, forming accuracy is high, surface quality good, structure property is excellent
The advantages of, it is the international advanced Forming Technique of High-performance gear class part.Spiral bevel gear shaping is applied to if pendulum is rolled over, such as
Really its complicated tooth form is swung by complicated dynamic yaw and shaped, then can break through three bottlenecks that above-mentioned Integral die-forged shaping faces
Problem.However, there is presently no on spiral bevel gear rotary roll (its complicated tooth form is swung by complicated dynamic yaw to be shaped)
Design.
The content of the invention
It is an object of the invention to provide a kind of spiral bevel gear rotary roll method, it can make crystal grain refinement, streamline
Densification, so that gear mechanism performance is greatly enhanced, and plastic force is small, profile accuracy is high, die life is high, easy mold release, has
The advantage that production efficiency is high, stock utilization is high, cost is low.
The technical solution adopted for the present invention to solve the technical problems is：
A kind of spiral bevel gear rotary roll method, the spiral bevel gear rolles over mould rotary roll by pendulum, and the pendulum is rolled over
Mould includes the yaw being oppositely arranged up and down and pendulum rolles over lower mould, and the yaw makees circular motion, and it is upward that the pendulum rolles over lower mould
Make straight-line feed motion, the rotary roll method comprises the following steps：Spiral bevel gear blank is placed under yaw and pendulum rolling
Between mould, the tooth form of the spiral bevel gear is swung by the yaw to be shaped, the spiral bevel gear back of the body relative with its tooth form
Portion lower contour forming is rolled over by the pendulum.
By above-mentioned technical proposal, the yaw is swung along with the oppositely oriented direction of spiral bevel gear.
By above-mentioned technical proposal, the Bai Zhan centers of the yaw are located at the type of spiral bevel gear tooth form for the conical point of yaw
On face and pass through its axis.
By above-mentioned technical proposal, the type face that the yaw is used for forming spiral bevel gear tooth form is calculated by below equation
Go out：
In formula, (x, y, z) is the coordinate at any point in spiral bevel gear tooth form, and (x', y', z') is corresponding points on yaw
Coordinate, γ be yaw pivot angle.
By above-mentioned technical proposal, the pendulum is rolled over and is provided with stopper slot on lower mould, for preventing spiral bevel gear from being run in pendulum
Rotated in journey.
By above-mentioned technical proposal, the spiral bevel gear includes driven spiral bevel gear and active spiral bevel gear, described
The pendulum of driven spiral bevel gear is rolled over blank and manufactured by die forging or rolling, and the pendulum of the active spiral bevel gear rolles over blank and passes through mould
Forge or carve transverse rolling manufacture.
By above-mentioned technical proposal, during the rotary roll of driven spiral bevel gear, the tooth form external diameter of the yaw is small
In spiral bevel gear external diameter 2mm；During the rotary roll of active spiral bevel gear, the tooth form of the yaw is highly less than spiral shell
Revolve bevel gear tooth form height 1mm.
By above-mentioned technical proposal, during the rotary roll of spiral bevel gear, when pendulum, which rolles over lower mould, is fed into predetermined value
Feed-disabling, yaw continues to swing at least 2 weeks.
The beneficial effect comprise that：(1) flowing is easier with the spiral bevel gear blank of yaw localized contact to fill
Tooth form is filled out, so that ensure that the filling of spiral bevel gear tooth form is full, and tooth form can add up big strain under yaw repeated action,
Make crystal grain refinement, streamline fine and close, so as to be greatly enhanced gear mechanism performance；(2) cold drawn section belongs to incremental forming and metal holds
Easily flowing, therefore plastic force is small, profile accuracy is high, die life is high；(3) shaped because tooth form is swung by yaw, so spiral
It is easy to be stripped after bevel gear rotary roll；(4) production efficiency of the present invention is high, stock utilization is high, cost is low.
Brief description of the drawings
Below in conjunction with drawings and Examples, the invention will be further described, in accompanying drawing：
Fig. 1 is the front view of spiral bevel gear in the embodiment of the present invention；
Fig. 2 is the rearview of spiral bevel gear in the embodiment of the present invention；
Fig. 3 is the structural representation of pendulum rolling mould in the embodiment of the present invention；
Fig. 4 is the threedimensional model schematic diagram of yaw in the embodiment of the present invention.
In figure：1- spiral bevel gears blank, 2- yaws, 3- pendulum roll over lower mould.
Embodiment
In order to make the purpose , technical scheme and advantage of the present invention be clearer, it is right below in conjunction with drawings and Examples
The present invention is further elaborated.It should be appreciated that specific embodiment described herein is only to explain the present invention, not
For limiting the present invention.
As Figure 1-Figure 4, a kind of spiral bevel gear rotary roll method, spiral bevel gear is rolled over mould pendulum by pendulum and rolled over into
Shape, as shown in figure 3, pendulum, which rolles over yaw 2 and pendulum of the mould including being oppositely arranged up and down, rolles over lower mould 3, yaw 2 makees circular motion,
Pendulum rolles over lower mould 3 and makees straight-line feed motion upwards, and the rotary roll method comprises the following steps：Spiral bevel gear blank 1 is placed
Between mould 3 under yaw 2 and pendulum are rolled over, the tooth form of spiral bevel gear is swung by yaw to be shaped, and spiral bevel gear is relative with its tooth form
Back lower contour forming is rolled over by pendulum.
In a preferred embodiment of the invention, as shown in Figure 3, Figure 4, the yaw edge direction oppositely oriented with spiral bevel gear
Swing, so that metal stock is easier flowing filling tooth form.
In a preferred embodiment of the invention, as shown in figure 3, the Bai Zhan centers of yaw are located at spiral for the conical point of yaw
On the type face of bevel gear tooth form and pass through its axis.
In a preferred embodiment of the invention, yaw is calculated for the type face of forming spiral bevel gear tooth form by below equation
Draw：
In formula, (x, y, z) is the coordinate at any point in spiral bevel gear tooth form, and (x', y', z') is corresponding points on yaw
Coordinate, γ be yaw pivot angle.
In a preferred embodiment of the invention, as shown in figure 3, pendulum rolles over the lower mould back phase relative with spiral bevel gear tooth form
Matching, pendulum is rolled over and is provided with stopper slot on lower mould, for preventing spiral bevel gear from being rotated during pendulum is rolled over.
In a preferred embodiment of the invention, spiral bevel gear includes driven spiral bevel gear and active spiral bevel gear,
The pendulum of driven spiral bevel gear is rolled over blank and manufactured by die forging or rolling, the pendulum of active spiral bevel gear roll over blank by die forging or
Carve transverse rolling manufacture.
In a preferred embodiment of the invention, during the rotary roll of driven spiral bevel gear, outside the tooth form of yaw
Footpath is less than spiral bevel gear external diameter 2mm；During the rotary roll of active spiral bevel gear, the tooth form of yaw is highly less than spiral shell
Revolve bevel gear tooth form height 1mm.There is gross weight between the above-mentioned pendulum rolling big end tooth shape of spiral bevel gear designed for guarantee, so as to improve
The strength of gear teeth.
In a preferred embodiment of the invention, during the rotary roll of spiral bevel gear, roll over lower mould when pendulum and be fed into
Feed-disabling during predetermined value, yaw continues to swing at least 2 weeks, to ensure spiral bevel gear tooth forming precision.
In specific application, as shown in Figure 1 and Figure 2, spiral bevel gear is dextrorotation, modulus 3mm, the number of teeth 43, pressure to the present invention
20 ° of angle, 35 ° of helical angle, addendum coefficient 0.85, bottom of the tooth gap coefficient 0.188, modification coefficient 0, facewidth 24mm, the present invention includes
Following steps：Spiral bevel gear complexity tooth form is swung by complicated dynamic yaw to be shaped, and the back relative with tooth form is then rolled over by pendulum
Lower contour forming, yaw is counterclockwise swung.
It should be appreciated that for those of ordinary skills, can according to the above description be improved or converted,
And all these modifications and variations should all belong to the protection domain of appended claims of the present invention.
Claims (8)
1. a kind of spiral bevel gear rotary roll method, it is characterised in that the spiral bevel gear rolles over mould rotary roll by pendulum,
The yaw and pendulum that the pendulum rolles over mould and includes being oppositely arranged up and down roll over lower mould, and the yaw makees circular motion, and the pendulum is rolled over
Lower mould makees straight-line feed motion upwards, and the rotary roll method comprises the following steps：Spiral bevel gear blank is placed on yaw
Between the lower mould of pendulum rolling, the tooth form of the spiral bevel gear is swung by the yaw to be shaped, the spiral bevel gear and its tooth form
Relative back lower contour forming is rolled over by the pendulum.
2. spiral bevel gear rotary roll method according to claim 1, it is characterised in that the yaw edge and screw conic
The oppositely oriented direction of gear is swung.
3. spiral bevel gear rotary roll method according to claim 1, it is characterised in that the Bai Zhan centers of the yaw
Conical point for yaw is located on the type face of spiral bevel gear tooth form and passes through its axis.
4. spiral bevel gear rotary roll method according to claim 1, it is characterised in that the yaw is used for shaping spiral shell
The type face of rotation bevel gear tooth form is calculated by below equation：
In formula, (x, y, z) is the coordinate at any point in spiral bevel gear tooth form, and (x', y', z') is the seat of corresponding points on yaw
Mark, γ is the pivot angle of yaw.
5. spiral bevel gear rotary roll method according to claim 1, it is characterised in that the pendulum is rolled over to be set on lower mould
Limited location groove, for preventing spiral bevel gear from being rotated during pendulum is rolled over.
6. spiral bevel gear rotary roll method according to claim 1, it is characterised in that the spiral bevel gear includes
Driven spiral bevel gear and active spiral bevel gear, the pendulum of the driven spiral bevel gear roll over blank and pass through die forging or rolling system
Make, the pendulum of the active spiral bevel gear rolles over blank by die forging or carves transverse rolling manufacture.
7. spiral bevel gear rotary roll method according to claim 6, it is characterised in that in driven spiral bevel gear
During rotary roll, the tooth form external diameter of the yaw is less than spiral bevel gear external diameter 2mm；Rolled in the pendulum of active spiral bevel gear
In forming process, the tooth form of the yaw is highly less than spiral bevel gear tooth form height 1mm.
8. spiral bevel gear rotary roll method according to claim 1, it is characterised in that rolled in the pendulum of spiral bevel gear
In forming process, when pendulum rolles over feed-disabling when lower mould is fed into predetermined value, yaw continues to swing at least 2 weeks.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233202.4A CN107008836B (en) | 2017-04-11 | 2017-04-11 | A kind of spiral bevel gear rotary roll method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710233202.4A CN107008836B (en) | 2017-04-11 | 2017-04-11 | A kind of spiral bevel gear rotary roll method |
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| Publication Number | Publication Date |
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| CN107008836A true CN107008836A (en) | 2017-08-04 |
| CN107008836B CN107008836B (en) | 2019-03-08 |
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| CN201710233202.4A Active CN107008836B (en) | 2017-04-11 | 2017-04-11 | A kind of spiral bevel gear rotary roll method |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824739A (en) * | 2017-11-08 | 2018-03-23 | 河南科技大学 | A kind of vertical knee-type milling machine Special curve bevel gear pendulum rolles over tool setting device |
| CN109290500A (en) * | 2018-11-29 | 2019-02-01 | 中国重汽集团济南动力有限公司 | A kind of main dynamic bevel gear forging technology of vehicle bridge |
| CN113878019A (en) * | 2021-10-15 | 2022-01-04 | 长安大学 | Forming process of cylinder reinforcing rib based on electro-plasticity and impact |
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| US3359769A (en) * | 1964-10-14 | 1967-12-26 | Nii Tekh Avtomobil Promy | Bevel gear generator |
| JPS611439A (en) * | 1984-02-03 | 1986-01-07 | Musashi Seimitsu Kogyo Kk | Production of spiral bevel gear by rotary forging method |
| US6076387A (en) * | 1996-05-02 | 2000-06-20 | Wdb Ringwalztechnik Gmbh | Process for rolling bevel gears on an axial stamping rolling machine and tooling for its implementation |
| DE102007035493A1 (en) * | 2007-07-28 | 2009-01-29 | Volkswagen Ag | Fabrication method for bevel gear e.g. for motor vehicle, involves fabrication of bevel gear by using gyratory die |
| CN102101171A (en) * | 2009-12-02 | 2011-06-22 | 通用汽车环球科技运作有限责任公司 | Bevel and hypoid gear and method of manufacture |
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| US3359769A (en) * | 1964-10-14 | 1967-12-26 | Nii Tekh Avtomobil Promy | Bevel gear generator |
| JPS611439A (en) * | 1984-02-03 | 1986-01-07 | Musashi Seimitsu Kogyo Kk | Production of spiral bevel gear by rotary forging method |
| US6076387A (en) * | 1996-05-02 | 2000-06-20 | Wdb Ringwalztechnik Gmbh | Process for rolling bevel gears on an axial stamping rolling machine and tooling for its implementation |
| DE102007035493A1 (en) * | 2007-07-28 | 2009-01-29 | Volkswagen Ag | Fabrication method for bevel gear e.g. for motor vehicle, involves fabrication of bevel gear by using gyratory die |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107824739A (en) * | 2017-11-08 | 2018-03-23 | 河南科技大学 | A kind of vertical knee-type milling machine Special curve bevel gear pendulum rolles over tool setting device |
| CN109290500A (en) * | 2018-11-29 | 2019-02-01 | 中国重汽集团济南动力有限公司 | A kind of main dynamic bevel gear forging technology of vehicle bridge |
| CN113878019A (en) * | 2021-10-15 | 2022-01-04 | 长安大学 | Forming process of cylinder reinforcing rib based on electro-plasticity and impact |
| CN113878019B (en) * | 2021-10-15 | 2024-03-26 | 长安大学 | Forming process of cylinder reinforcing rib based on electro-plasticity and impact |
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| Publication number | Publication date |
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| CN107008836B (en) | 2019-03-08 |
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