CN208303878U - A kind of powder used in metallurgy helical gear special production mould therefor - Google Patents
A kind of powder used in metallurgy helical gear special production mould therefor Download PDFInfo
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- CN208303878U CN208303878U CN201820669998.8U CN201820669998U CN208303878U CN 208303878 U CN208303878 U CN 208303878U CN 201820669998 U CN201820669998 U CN 201820669998U CN 208303878 U CN208303878 U CN 208303878U
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Abstract
The utility model discloses a kind of powder used in metallurgy helical gear special production mould therefors, including upper mold, cavity block, next stamping die, following two punch mold, lower three stamping dies and plug；Lower three stamping dies are set in following two punch mold, and following two punch mold is set in next stamping die, and next stamping die, following two punch mold and lower three stamping dies complement each other to form lower die, and plug passes through upper mold and lower three stamping die；Former, which is located on the outside of upper mold and lower die, to be fixed on the rack；At the time of molding, following two punch die top height is higher than next stamping die and lower three stamping die, and when demoulding, former and the rotation of upper mold automatic reverse, lower die is fixed, is automatically performed demoulding.The utility model mold inner-cavity whole chromium plating improves die life, and is provided with automatic demoulding structure, former and the rotation of upper mold automatic reverse can be achieved, lower die is fixed, achievees the purpose that bed die floating compacting demoulding, substantially increases production and processing efficiency and helical gear wheel tooth density.
Description
Technical field
The utility model belongs to powder metallurgy production equipment field, and in particular to a kind of dedicated life of powder used in metallurgy helical gear
Produce mold.
Background technique
Since present helical gear industry development is quick, the requirement to helical gear components is also higher and higher, becomes increasingly complex.
Gear can also be prepared by powder metallurgy at present, but the helical gear that existing powder metallurgy is prepared is due to preparation process
And the reason of equipment, the gear of preparation high rejection rate when needing to carry out finishing, machining in the later period lead to the powder being prepared
Last metallurgy helical gear is unable to satisfy the needs of rapid economic development.
The key tool that mold is produced as helical gear, in the process of helical teeth wheel-class parts, mold is to guarantee system
The important tool of product precision.Therefore, it is necessary to design a new powder metallurgical helical gear particular manufacturing craft, helical gear powder is solved
The compression moulding problem of last metallurgical production.
Summary of the invention
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of dedicated production of powder used in metallurgy helical gear
Mold.
In order to solve the above technical problems, the technical solution of the utility model are as follows:
A kind of powder used in metallurgy helical gear special production mould therefor, including upper mold, cavity block, next stamping die, following two punch mould
Tool, lower three stamping dies and plug；Lower three stamping dies are set in following two punch mold, and following two punch mold is set in next stamping die
Interior, next stamping die, following two punch mold and lower three stamping dies complement each other to form lower die, and plug passes through upper mold and lower three punch die
Tool；Former, which is located on the outside of upper mold and lower die, to be fixed on the rack；The upper mold is provided with a gas vent, the gas vent
It is arranged along the radial direction of upper mold, and runs through upper grinding tool wall surface, at the time of molding, under following two punch die top height is higher than
One stamping die and lower three stamping die, former and upper mold can be rotated around plug axis, and former and upper mold direction of rotation
On the contrary.
Preferably, next stamping die, following two punch mold and lower three stamping dies wall thickness proportionate relationship are 2:5:
1.8。
Preferably, next stamping die wall thickness is 3.5-4mm, following two punch mold wall thickness is 9-10mm, Xia Sanchong
Mold wall thickness is 3-3.5mm,
Preferably, the following two punch die top is with next stamping die top difference of height when forming completion
3.0mm。
Preferably, the upper mold and next stamping die outer wall are provided with mold locating slot, mold locating slot makes mould
Has Fast Installation positioning.
Preferably, the mold inner-cavity whole chromium plating, protects mold.
The utility model has the beneficial effects that the helical gear particular manufacturing craft is designed using multilayer mould bases powder pressing structure, by
On once three totally four layers of template compositions so that helical gear is integrally formed, mold inner-cavity whole chromium plating improves mold and uses the longevity
Life, and automatic demoulding structure is provided with, it can be achieved that former and the rotation of upper mold automatic reverse, lower die is fixed, and it is floating to reach former
The purpose of dynamic pressure system demoulding, substantially increases the wheel tooth density of production and processing efficiency and existing powder metallurgical helical gear.
Detailed description of the invention
Fig. 1 is helical gear Special mould structure figure；
Fig. 2 is helical gear plan view；
Fig. 3 is helical gear sectional view；
In figure, upper mold 1, helical gear green compact 2, cavity block 3, next stamping die 4, following two punch mold 5, lower three stamping dies, 6 and
Plug 7, cylindrical body 8, helical teeth tooth 9, transmission keyway 10.
Specific embodiment
As shown in Figure 1, the powder used in metallurgy helical gear special production mould therefor of the utility model,
Including upper mold 1, cavity block 3, next stamping die 4, following two punch mold 5, lower three stamping dies 6 and plug 7；
Lower three stamping dies 6 are set in following two punch mold 5, and following two punch mold 5 is set in next stamping die 4, Xia Yichong
Mold 4, following two punch mold 5 and lower three stamping dies 6 complement each other to form lower die, and plug 6 passes through upper mold 1 and lower three stamping die 6；
Former 3, which is located on the outside of upper mold 1 and lower die, to be fixed on the rack；
The upper mold 1 is provided with a gas vent, which is arranged along the radial direction of upper mold 1, and
Through upper grinding tool wall surface, at the time of molding, 5 overhead height of following two punch mold is higher than next stamping die 4 and lower three stamping die 6, former 3
It can be rotated around plug axis with upper mold 1, and former 3 and 1 direction of rotation of upper mold take off on the contrary, reaching bed die floating compacting
The purpose of mould.When molding, helical gear green compact 2 is located in cavity block 3.
As shown in Fig. 2, the difference in height at the top of following two punch die top and next stamping die, as 3.0mm.It is practical new at this
In one specific embodiment of type, the upper mold and next stamping die outer wall are provided with locating slot, mold locating slot, mold positioning
Slot positions mold Fast Installation.
In a specific embodiment of the utility model, mold is protected in the mold inner-cavity whole chromium plating.
In a specific embodiment of the utility model, next stamping die 4, following two punch mold 5 and lower three punch die
Having 6 wall thickness proportionate relationships is 2:5:1.8.
In a specific embodiment of the utility model, next 4 wall thickness of stamping die is 3.5-4mm, following two punch mould
Having 5 wall thickness is 9-10mm, and lower three stamping dies, 6 wall thickness is 3-3.5mm,
In a specific embodiment of the utility model, two sides are symmetrically arranged on lower three stamping dies, 6 end face
Shape protrusion, the two square protrudings correspond to helical gear 10 part of transmission keyway；1 lower part of upper mold is equipped with convex annular
Platform, boss height 3.0mm, boss corresponds to the upper surface depressed section of helical gear product, for reducing the weight of helical gear product
Amount.On the next stamping die 4 and edge of upper mold 1, which has, is used to form the structure of helical teeth tooth 9, i.e., body structure surface with
The matching of 9 shape of helical teeth tooth.
As shown in Figures 2 and 3, the helical gear that the utility model obtains includes cylindrical body 8, and 8 surface of cylindrical body is set
There is the molding helical teeth tooth 9 of powder metallurgy pressing, 8 internal circular surfaces of cylindrical body are equipped with transmission keyway 10；The cylindrical body 8
Transmission keyway 10 be upper and lower two；The spiral angle of the helical teeth tooth 9 is 20 degree, and helical teeth tooth 9 is no less than 40 groups；It is described oblique
Gear is with a thickness of 12.5mm.This helical gear is integrally formed by powder metallurgically manufacturing technology, using self-control particular manufacturing craft, rotation pressure
Type is made, product is durable.
In helical gear forming process, powder is sent by mold, upper trimming die and undershoot mold by press feeding mechanism
Enter under the action of the drive mechanism and carry out compression forming in negative impression, with the increase of pressure, powder increases the frictional force of mold
Greatly, make mold start to move downward, form moving upwards for bottom punch and plug, realize the two-way forming of powder, former, plug
Certain confined space is formd between upper and lower stamping, keeps the density of green compact more uniform, and outer dimension precision and one
Cause property is high.When demoulding, former and the rotation of upper mold automatic reverse, lower die is fixed, is automatically performed demoulding.
Claims (6)
1. a kind of powder used in metallurgy helical gear special production mould therefor, it is characterised in that including upper mold (1), former (3), Xia Yichong
Mold (4), following two punch mold (5), lower three stamping dies (6) and plug (7)；
Lower three stamping dies (6) are set in following two punch mold (5), and following two punch mold (5) is set in next stamping die (4), under
One stamping die (4), following two punch mold (5) and lower three stamping die (6) complement each other to form lower die, and plug (7) passes through upper mold (1)
With lower three stamping die (6)；Former (3), which is located on the outside of upper mold (1) and lower die, to be fixed on the rack；
The upper mold (1) is provided with a gas vent, which is arranged along the radial direction of upper mold (1), and
Through upper grinding tool wall surface, at the time of molding, following two punch mold (5) overhead height is higher than next stamping die (4) and lower three stamping die
(6), former (3) and upper mold (1) can be rotated around plug axis, and former (3) and upper mold (1) direction of rotation are opposite.
2. helical gear special production mould therefor according to claim 1, which is characterized in that next stamping die (4), lower two
Stamping die (5) and lower three stamping die (6) wall thickness proportionate relationship are 2:5:1.8.
3. helical gear special production mould therefor according to claim 1, it is characterised in that: next stamping die (4) wall thickness
For 3.5-4mm, following two punch mold (5) wall thickness is 9-10mm, and lower three stamping dies (6) wall thickness is 3-3.5mm.
4. helical gear special production mould therefor according to claim 1, it is characterised in that: at the top of the following two punch mold (5)
Difference with next stamping die (4) top height when forming completion is 3.0mm.
5. helical gear special production mould therefor according to claim 1, it is characterised in that: the upper mold (1) and next punching
Mold (4) outer wall is provided with mold locating slot.
6. helical gear special production mould therefor according to claim 1, it is characterised in that: the upper mold and lower mold cavity are complete
Mold is protected in portion's chromium plating.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820669998.8U CN208303878U (en) | 2018-05-07 | 2018-05-07 | A kind of powder used in metallurgy helical gear special production mould therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820669998.8U CN208303878U (en) | 2018-05-07 | 2018-05-07 | A kind of powder used in metallurgy helical gear special production mould therefor |
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| Publication Number | Publication Date |
|---|---|
| CN208303878U true CN208303878U (en) | 2019-01-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820669998.8U Active CN208303878U (en) | 2018-05-07 | 2018-05-07 | A kind of powder used in metallurgy helical gear special production mould therefor |
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| CN (1) | CN208303878U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118321545A (en) * | 2024-06-14 | 2024-07-12 | 成都虹波实业股份有限公司 | Tungsten alloy circular ring forming die and manufacturing method |
-
2018
- 2018-05-07 CN CN201820669998.8U patent/CN208303878U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118321545A (en) * | 2024-06-14 | 2024-07-12 | 成都虹波实业股份有限公司 | Tungsten alloy circular ring forming die and manufacturing method |
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