CN204175908U - A kind of bimetal gear - Google Patents
A kind of bimetal gear Download PDFInfo
- Publication number
- CN204175908U CN204175908U CN201420626886.6U CN201420626886U CN204175908U CN 204175908 U CN204175908 U CN 204175908U CN 201420626886 U CN201420626886 U CN 201420626886U CN 204175908 U CN204175908 U CN 204175908U
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- China
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- layer
- inner layer
- outer layer
- gear
- bimetal
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- Expired - Fee Related
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Abstract
The utility model belongs to mechanical field, be specifically related to a kind of bimetal gear, comprise outer layer and inner layer, this outer layer is Cuprum alloy, inner layer is steel or cast iron, the metal hardness of inner layer is greater than the metal hardness of outer layer, and described inner layer outer surface is dispersed with the lance tooth of bar trench vertically, and this lance tooth and outer layer internal surface form interference fit plastic deformation occlusal layer.The utility model has inner layer and outer layer excellent bonding performance, and manufacturing process is simple, the advantage that cost is low.
Description
Technical field
The utility model belongs to mechanical field, particularly a kind of bimetal gear.
Background technique
Gear is that one applies fundamental parts very widely in the industry.Tungsten/copper-alloy integrated gear due to its friction factor little, antifriction performance is excellent, good combination property, and the parent being subject to industrial quarters looks at.But Cuprum alloy is expensive, the price of its material is about more than 10 times of plain carbon steel or cast iron.In order to the cost reducing Cuprum alloy gear keeps its premium properties simultaneously, the most frequently used solution is that compound casting is shaping, is divided into inner layer and outer layer two-part by gear, and outer layer is Cuprum alloy crown layer, inner layer is steel or cast iron circle, is linked together by casting method.But compound casting shaping junction plane binding ability is poor, and forming equipment and complex process, cost is high.Authorization Notice No. is the scheme that the Chinese utility model patent of " a kind of bimetal compound gear " of CN203230818U discloses a kind of bimetal gear, the program can meet the usage requirement under normal conditions, but in the Long-Time Service operating mode of high temperature or oil lubrication, binder easily lost efficacy, cause inner layer and outer layer to loosen, such bimetal gear is broken down.
Model utility content
The purpose of this utility model is to have bimetal gear the deficiencies in the prior art in mind, and propose one and both met conventional use, meet again the Environmental Conditions of high temperature or oil lubrication, excellent bonding performance between bimetal, manufacturing process is simple, a kind of bimetal gear that cost is low.
Technical solutions of the utility model: a kind of bimetal gear, comprise outer layer and inner layer, this outer layer is Cuprum alloy, inner layer is steel or cast iron, the metal hardness of inner layer is greater than the metal hardness of outer layer, it is characterized in that described inner layer outer surface is dispersed with the lance tooth of bar trench vertically, this lance tooth and outer layer internal surface are interference fit plastic deformation occlusal layer; Described lance tooth is formed by knurling tool annular knurl.
The utility model beneficial effect is: inner layer adopts the harder steel of material or cast iron to make, its outer surface is dispersed with the lance tooth formed by annular knurl, the Cuprum alloy internal surface softer with outer layer adopts interference fit, the skim of the internal surface of this lance tooth and outer layer produces plastic deformation, mutual containing is interlocked, and defines interference fit plastic deformation occlusal layer, and this method connects simple and reliable, join strength is high, avoids the shortcoming using adhesive-layer; Inner layer adopts steel or cast iron materials, cast member, forge piece or shape extrusion can be adopted to form, much lower than Cuprum alloy of cost, and outer layer adopts Cuprum alloy, can ensure that gear teeth face friction factor is low, wear resistance is good, and all in all, the cost of the bimetal gear that such combination of materials manufactures is more much lower than fine copper gear; Inner layer and outer layer adopt press machine the inner layer of normal temperature to be pressed into add in the outer layer after thermal expansion when assembling, simple for process.
Accompanying drawing explanation
Fig. 1 is the cut-away view after the utility model assembling.
Fig. 2 is the utility model outer layer structural representation.
Fig. 3 is the utility model inner layer structural representation.
In accompanying drawing, corresponding technical characteristics mark is as follows:
1-outer layer, 2-inner layer, 3-lance tooth, 4-outer layer internal surface, 5-interference fit plastic deformation occlusal layer.
Embodiment
Below in conjunction with drawings and Examples, the utility model is described in further detail.
When implementing the utility model, outer layer (1) external diameter is 64mm, and internal diameter is 40mm, and material is Cu alloy material, as tin bronze; Inner layer (2) external diameter is 40mm, and internal diameter is 20mm, adopts Ordinary Steel, as No. 45 steel, or adopts cast iron, as magnesium iron.Can select cast blank, forging blank or section bar, manufactured by machining.
The lance tooth (3) of inner layer (2) outer surface is by knurling tool machine shaping, and annular knurl Vee formation shape tooth (3) crown place external diameter becomes 42mm, and space width is 1.5mm, and tooth-tip angle is 60 °.
The assembly process of this kind of bimetal compound gear is, after outer layer (1) and inner layer (2) are machined, with press machine, the press-in of the inner layer (2) of normal temperature is heated to about 250 DEG C and is incubated in the outer layer (1) of expanded by heating half an hour, during assembling there is interference fit plastic extruding deformation with outer layer internal surface (4) in the lance tooth (3) of inner layer (2), lance tooth (3) is inlayed and is engaged in outer layer internal surface (4), form interference fit plastic deformation occlusal layer (5).
Claims (2)
1. a bimetal gear, comprise outer layer and inner layer, this outer layer is Cuprum alloy, inner layer is steel or cast iron, the metal hardness of inner layer is greater than the metal hardness of outer layer, it is characterized in that described inner layer outer surface is dispersed with the lance tooth of bar trench vertically, this lance tooth and outer layer internal surface are interference fit plastic deformation occlusal layer.
2. a kind of bimetal gear according to claim 1, is characterized in that described lance tooth is formed by knurling tool annular knurl.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420626886.6U CN204175908U (en) | 2014-10-28 | 2014-10-28 | A kind of bimetal gear |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420626886.6U CN204175908U (en) | 2014-10-28 | 2014-10-28 | A kind of bimetal gear |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204175908U true CN204175908U (en) | 2015-02-25 |
Family
ID=52564719
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420626886.6U Expired - Fee Related CN204175908U (en) | 2014-10-28 | 2014-10-28 | A kind of bimetal gear |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204175908U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387720A (en) * | 2017-07-18 | 2017-11-24 | 河南科技大学 | A kind of lightweight automobile gear structure and manufacture method |
| CN108577470A (en) * | 2018-04-26 | 2018-09-28 | 大连大学 | A kind of suspended item leveling method |
| CN115245870A (en) * | 2022-05-20 | 2022-10-28 | 华能新华发电有限责任公司 | Wear-resisting round air door of full ceramic structure |
-
2014
- 2014-10-28 CN CN201420626886.6U patent/CN204175908U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107387720A (en) * | 2017-07-18 | 2017-11-24 | 河南科技大学 | A kind of lightweight automobile gear structure and manufacture method |
| CN108577470A (en) * | 2018-04-26 | 2018-09-28 | 大连大学 | A kind of suspended item leveling method |
| CN115245870A (en) * | 2022-05-20 | 2022-10-28 | 华能新华发电有限责任公司 | Wear-resisting round air door of full ceramic structure |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150225 Termination date: 20151028 |
|
| EXPY | Termination of patent right or utility model |