CN202169371U - Spiral bevel gear forming die - Google Patents
Spiral bevel gear forming die Download PDFInfo
- Publication number
- CN202169371U CN202169371U CN2011201347336U CN201120134733U CN202169371U CN 202169371 U CN202169371 U CN 202169371U CN 2011201347336 U CN2011201347336 U CN 2011201347336U CN 201120134733 U CN201120134733 U CN 201120134733U CN 202169371 U CN202169371 U CN 202169371U
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- CN
- China
- Prior art keywords
- die
- bevel gear
- spiral bevel
- seat
- upper punching
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model discloses a spiral bevel gear forming die. The forming die comprises an upper punching die 1, a lower die seat 2, metal powder 3, a die core 4 and a concave die cavity 5, wherein the lower end of the upper punching die 1 is closely adhered on the inner wall of the lower die seat 2; the lower die seat 2 is locked in the concave die cavity 5; metal powder 3 is arranged between the bottom of the upper punching die 1 and the lower die seat 2; a die core 4 is arranged in the die cavity of the upper punching die 1; the lower die seat 2 is in a taper shape with upper wide and lower narrow in the whole; and the outer wall of the upper punching die 1 is wide at the upper part and narrow at the lower part; and the upper punching die 1 is matched with the lower die seat 2. In the spiral bevel gear forming die, the inner expanding type forming mode is adopted, so that the metal powder is uniformly expanded into a tooth groove; therefore, the front and the back of spiral teeth are stressed uniformly, and the density is consistent; and the service life of the die is prolonged, and the pressure is saved. The spiral bevel gear forming die is mainly used for forming a conical spiral bevel gear with a spiral angle larger than 20 degrees.
Description
Technical field
The utility model relates to a kind of gear forming mould, is specifically related to a kind of mould of spiral bevel gear.
Background technology
Spiral bevel gear be a kind of can high speed, high pulling torque, low noise ground be at the machine driving class part of not parallel between centers transmission campaign and power.Present spiral bevel gear all is the cylindrical screw gear, adopts upper and lower mould to dash, and to cavity space, the forming method of pressing is carried out machine-shaping.Because cause the just negative unbalance stress of helical tooth easily, be prone to cause the damage of mould in this moulding process, die life is short, and the pressure loss is serious.
Along with continuous progress in science and technology, growing field need adopt spiral bevel gear, and especially the demand of the circular cone of helical angle above 20 ° is very big.But being washed into the type method, traditional upper and lower mould can't process qualified trochoid spiral angular wheel, even produce product reluctantly, and its overload, acceleration, performance such as durable is also very poor, does not reach application target.
So, how to produce qualified trochoid spiral angular wheel, make the just negative stressed even of helical tooth, the long service life of mould has become the task of top priority in spiral bevel gear mould field.
The utility model content
The purpose of the utility model is to overcome the defective that exists in the prior art, designs a kind of mould of spiral bevel gear, use helical tooth that this Mould Machining goes out just negative stressed evenly, the long service life of mould.
For realizing above-mentioned purpose; The technical scheme of the utility model has provided a kind of mould of spiral bevel gear, it is characterized in that, said mould comprises upper trimming die, die shoe, metal dust, core rod and cavity space; The lower end of said upper trimming die is close on the inwall of die shoe; Die shoe locks onto in the cavity space, is provided with metal dust between the bottom of upper trimming die and the die shoe, is provided with core rod in the die cavity of upper trimming die.
The utility model optimized technical scheme is, the whole one-tenth taper wide at the top and narrow at the bottom of said die shoe, and the outer wall of upper trimming die is wide at the top and narrow at the bottom and suitable with die shoe.
The advantage and the beneficial effect of the utility model are: adopt the internal expansion type molding mode, metal dust is expanded among the teeth groove uniformly, can make the just negative stressed even of helical tooth, consistent in density.Both prolong die life, saved pressure again.The utility model is mainly used in the moulding that helical angle surpasses 20 ° trochoid spiral angular wheel.
Description of drawings
Fig. 1 is the structural representation of the mould of the utility model spiral bevel gear.
Among the figure: 1, upper trimming die; 2, die shoe; 3, metal dust; 4, core rod; 5, cavity space.
The specific embodiment
Below in conjunction with accompanying drawing and embodiment, the specific embodiment of the utility model is further described.Following examples only are used for more clearly explaining the technical scheme of the utility model, and can not limit the protection domain of the utility model with this.
As shown in Figure 1; The utility model is a kind of mould of spiral bevel gear; This mould comprises upper trimming die 1, die shoe 2, metal dust 3, core rod 4 and cavity space 5, and the lower end of said upper trimming die 1 is close on the inwall of die shoe 2, and die shoe 2 locks onto in the cavity space 5; Be provided with metal dust 3 between the bottom of upper trimming die 1 and the die shoe 2, be provided with core rod 4 in the die cavity of upper trimming die 1.Said die shoe 2 whole one-tenth tapers wide at the top and narrow at the bottom, the outer wall of upper trimming die 1 is wide at the top and narrow at the bottom and suitable with die shoe 2.
The manufacturing approach of spiral bevel gear mould is in the utility model: earlier the lower end of upper trimming die 1 is inserted in the die shoe 2; Between the bottom of upper trimming die 1 and die shoe 2, add metal dust 3; Then die shoe 2 is locked onto in the cavity space 5, core rod 4 is set in the die cavity of upper trimming die 1 again.
The utility model adopts the internal expansion type molding mode, and metal dust is expanded among the teeth groove uniformly, can make the just negative stressed even of helical tooth, consistent in density.Both prolong die life, saved pressure again.The utility model is mainly used in the moulding that helical angle surpasses 20 ° trochoid spiral angular wheel.
The above only is the preferred implementation of the utility model; Should be understood that; For those skilled in the art; Under the prerequisite that does not break away from the utility model know-why, can also make some improvement and retouching, these improvement and retouching also should be regarded as the protection domain of the utility model.
Claims (2)
1. the mould of a spiral bevel gear; It is characterized in that; Said mould comprises upper trimming die (1), die shoe (2), metal dust (3), core rod (4) and cavity space (5), and the lower end of said upper trimming die (1) is close on the inwall of die shoe (2), and die shoe (2) locks onto in the cavity space (5); Be provided with metal dust (3) between the bottom of upper trimming die (1) and the die shoe (2), be provided with core rod (4) in the die cavity of upper trimming die (1).
2. the mould of spiral bevel gear as claimed in claim 1 is characterized in that, the whole one-tenth taper wide at the top and narrow at the bottom of said die shoe (2), and the outer wall of upper trimming die (1) is wide at the top and narrow at the bottom and suitable with die shoe (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201347336U CN202169371U (en) | 2011-05-03 | 2011-05-03 | Spiral bevel gear forming die |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2011201347336U CN202169371U (en) | 2011-05-03 | 2011-05-03 | Spiral bevel gear forming die |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202169371U true CN202169371U (en) | 2012-03-21 |
Family
ID=45827575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2011201347336U Expired - Fee Related CN202169371U (en) | 2011-05-03 | 2011-05-03 | Spiral bevel gear forming die |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202169371U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847910A (en) * | 2012-08-15 | 2013-01-02 | 浙江恒成硬质合金有限公司 | Cylindrical-tooth mould |
-
2011
- 2011-05-03 CN CN2011201347336U patent/CN202169371U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102847910A (en) * | 2012-08-15 | 2013-01-02 | 浙江恒成硬质合金有限公司 | Cylindrical-tooth mould |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20120321 Termination date: 20140503 |