CN103104685A - Motorcycle die-casting-type transmission case tail cover - Google Patents
Motorcycle die-casting-type transmission case tail cover Download PDFInfo
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- CN103104685A CN103104685A CN2012105346204A CN201210534620A CN103104685A CN 103104685 A CN103104685 A CN 103104685A CN 2012105346204 A CN2012105346204 A CN 2012105346204A CN 201210534620 A CN201210534620 A CN 201210534620A CN 103104685 A CN103104685 A CN 103104685A
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Abstract
The invention belongs to the technical field of motors, and particularly relates to a motorcycle die-casting-type transmission case tail cover. A die-casting manufacturing process is adopted by a transmission case, and meanwhile, the body of the transmission case tail cover is made of aluminum alloy materials, and the wall thickness of the body is 3.5-5mm. Compared with the prior die-casting process, the tail cover is thinner, and therefore the quality of the body, the proportion of the body in the process of assembly of the integral transmission case, and the number of air holes in the process of die-casting of the body are reduced; meanwhile, reinforcing ribs are arranged on the inner surface of the body to strengthen the integral intensity of the body; and furthermore, in the process of die-casting of the body, dies adopted are very high in precision standard and general standard, and therefore the die-casting-type body has more generality.
Description
Technical field
The invention belongs to technical field of engines, be specifically related to motorcycle pressure-casting type transmission case tail-hood.
Background technique
At present, the tail-hood of transmission case is all that to select cast iron be material, is cast into basic technology with black.Product size does not have versatility like this, makes the assembling difficulty.And cast iron density is 7.8(g/cc), make the tail-hood quality of transmission case large, be assembled in whole transmission case, the shared proportion of tail-hood is larger, is unfavorable for mechanical light-weight design.Sand casting process exists low every of manufacturing efficiency needs 7-8 minute, yields poorly, and machining allowance is large, and precision is low, and scaling loss is many, and production environment is abominable, and following process is numerous and diverse, and outward appearance such as slightly makes at the defective.So now a lot of enterprises change original casting technique into extrusion process, making in the past, the tail-hood size of the transmission case of casting changes to some extent.
Summary of the invention
The present invention can provide a kind of quality light, and processing is simple, the motorcycle pressure-casting type transmission case tail-hood of highly versatile.
In order to solve the problems of the technologies described above, the invention provides following technological scheme: motorcycle pressure-casting type transmission case tail-hood, the body that comprises aluminum alloy, body is provided with exhaust port, inner core, part mounting hole, fastening piece mounting hole, described body wall thickness is 3.5～5mm, body internal surface is provided with stiffening rib, and stiffening rib is strip structure, is distributed in exhaust port, inner core, part mounting hole, fastening piece mounting hole surrounding.
Adopt technique scheme, in the present invention, because the technique that transmission case adopts die casting to make, body is aluminum alloy material simultaneously, and the wall thickness of body is 3.5～5mm, and is thinner compared to the body of existing extrusion process, alleviated like this quality of body, reduce body shared proportion when whole transmission case assembling, can also reduce the pore of body when die casting; Simultaneously due to the tail-hood evagination, and die casting exhaust hole, inner core, part mounting hole, fastening piece mounting hole on body, intensity around it can be affected, so the surrounding at exhaust port, inner core, part mounting hole, fastening piece mounting hole is provided with stiffening rib, and stiffening rib is list structure, can increase the intensity at each position of body, also very attractive in appearance; Body is when die casting in addition, and the mould of employing has very high accuracy standard and the universal standard, so the body of pressure-casting type has versatility more.
Further, in the prior art, the body of casting is because wall thickness is thicker, so the fastening piece mounting hole just must first cast out step, then holes, could use after tapping.In the present invention program, the wall thickness of body is reduced, fastening piece mounting hole and body integral die-cast get final product like this.
Description of drawings
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of motorcycle pressure-casting type transmission case tail-hood of the present invention.
Embodiment
Embodiment 1:
As shown in Figure 1: motorcycle pressure-casting type transmission case tail-hood, the body 1 that comprises aluminum alloy, body 1 is provided with exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4, body 1 wall thickness is D, D is 3.5mm, and body 1 internal surface is provided with stiffening rib 5, and stiffening rib 5 is list structure, be distributed in exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 surroundings, fastening piece mounting hole 4 and body 1 are the integrated type die castings.
In the present embodiment, because the technique that transmission case adopts die casting to make, body 1 is aluminum alloy material simultaneously, and the wall thickness of body 1 is D, D is 3.5mm, and is thinner compared to the body of existing extrusion process, alleviated like this quality of body 1, reduce body 1 shared proportion when whole transmission case assembling, can also reduce the pore of body 1 when die casting; Internal surface at body 1 is provided with stiffening rib 5 simultaneously, because die casting exhaust hole 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 on body 1, intensity around it can be affected, so the surrounding at exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 is provided with stiffening rib 5, and stiffening rib 5 is list structure, can increase the intensity at each position of body 1, also very attractive in appearance; Body 1 is when die casting in addition, and the mould of employing has very high accuracy standard and the universal standard, so the body 1 of pressure-casting type has versatility more; In the prior art, the body of casting 1 is because wall thickness is thicker, so fastening piece mounting hole 4 just must first cast out step, then holes, could use after tapping.In the present invention program, the wall thickness of body 1 is reduced, fastening piece mounting hole 4 gets final product with body 1 integral die-cast like this.
Embodiment 2:
As shown in Figure 1: motorcycle pressure-casting type transmission case tail-hood, the body 1 that comprises aluminum alloy, body 1 is provided with exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4, body 1 wall thickness is D, D is 4mm, and body 1 internal surface is provided with stiffening rib 5, and stiffening rib 5 is list structure, be distributed in exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 surroundings, fastening piece mounting hole 4 and body 1 are the integrated type die castings.
In the present embodiment, because the technique that transmission case adopts die casting to make, body 1 is aluminum alloy material simultaneously, and the wall thickness of body 1 is D, D is 4mm, and is thinner compared to the body of existing extrusion process, alleviated like this quality of body 1, reduce body 1 shared proportion when whole transmission case assembling, can also reduce the pore of body 1 when die casting; Internal surface at body 1 is provided with stiffening rib 5 simultaneously, because die casting exhaust hole 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 on body 1, intensity around it can be affected, so the surrounding at exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 is provided with stiffening rib 5, and stiffening rib 5 is list structure, can increase the intensity at each position of body 1, also very attractive in appearance; Body 1 is when die casting in addition, and the mould of employing has very high accuracy standard and the universal standard, so the body 1 of pressure-casting type has versatility more; In the prior art, the body of casting 1 is because wall thickness is thicker, so fastening piece mounting hole 4 just must first cast out step, then holes, could use after tapping.In the present invention program, the wall thickness of body 1 is reduced, fastening piece mounting hole 4 gets final product with body 1 integral die-cast like this.
Embodiment 3:
As shown in Figure 1: motorcycle pressure-casting type transmission case tail-hood, the body 1 that comprises aluminum alloy, body 1 is provided with exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4, body 1 wall thickness is D, D is 5mm, and body 1 internal surface is provided with stiffening rib 5, and stiffening rib 5 is list structure, be distributed in exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 surroundings, fastening piece mounting hole 4 and body 1 are the integrated type die castings.
In the present embodiment, because the technique that transmission case adopts die casting to make, body 1 is aluminum alloy material simultaneously, and the wall thickness of body 1 is D, D is 5mm, and is thinner compared to the body of existing extrusion process, alleviated like this quality of body 1, reduce body 1 shared proportion when whole transmission case assembling, can also reduce the pore of body 1 when die casting; Internal surface at body 1 is provided with stiffening rib 5 simultaneously, because die casting exhaust hole 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 on body 1, intensity around it can be affected, so the surrounding at exhaust port 6, inner core 2, part mounting hole 3, fastening piece mounting hole 4 is provided with stiffening rib 5, and stiffening rib 5 is list structure, can increase the intensity at each position of body 1, also very attractive in appearance; Body 1 is when die casting in addition, and the mould of employing has very high accuracy standard and the universal standard, so the body 1 of pressure-casting type has versatility more; In the prior art, the body of casting 1 is because wall thickness is thicker, so fastening piece mounting hole 4 just must first cast out step, then holes, could use after tapping.In the present invention program, the wall thickness of body 1 is reduced, fastening piece mounting hole 4 gets final product with body 1 integral die-cast like this.
In the present invention program, the wall thickness of body 1 is D, and the span of D is between 3.5～5mm, can reach the intensity needs of body 1.
Above-described is only the preferred embodiment of the present invention; should be understood that; for a person skilled in the art; under the prerequisite that does not break away from structure of the present invention; can also make some distortion and improvement; these also should be considered as protection scope of the present invention, and these can not affect effect of the invention process and practical applicability.
Claims (2)
1. motorcycle pressure-casting type transmission case tail-hood, it is characterized in that: the body that comprises aluminum alloy, body is provided with exhaust port, inner core, part mounting hole, fastening piece mounting hole, described body wall thickness is 3.5～5mm, the internal surface of body is provided with stiffening rib, stiffening rib is strip structure, is distributed in exhaust port, inner core, part mounting hole, fastening piece mounting hole surrounding.
2. motorcycle pressure-casting type transmission case tail-hood according to claim 1, it is characterized in that: described fastening piece mounting hole and body are the integrated pressure foundry goods.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105346204A CN103104685A (en) | 2012-12-12 | 2012-12-12 | Motorcycle die-casting-type transmission case tail cover |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012105346204A CN103104685A (en) | 2012-12-12 | 2012-12-12 | Motorcycle die-casting-type transmission case tail cover |
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| Publication Number | Publication Date |
|---|---|
| CN103104685A true CN103104685A (en) | 2013-05-15 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN2012105346204A Pending CN103104685A (en) | 2012-12-12 | 2012-12-12 | Motorcycle die-casting-type transmission case tail cover |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817307A (en) * | 2014-01-13 | 2014-05-28 | 江苏徐航科技有限公司 | Method for solving end face cold shut of deep-cavity thick-wall reinforcing rib of CVT (continuously variable transmission) shell |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0926399A2 (en) * | 1997-12-17 | 1999-06-30 | PIAGGIO & C. S.p.A. | Adaptable transmission housing for motor vehicle with one or more driving wheels |
| CN1963263A (en) * | 2005-11-09 | 2007-05-16 | 本田技研工业株式会社 | Two-wheeled motor vehicle transmission box aeration structure |
| CN202182168U (en) * | 2011-08-16 | 2012-04-04 | 重庆鑫之源动力设备有限公司 | Die casting type middle case body of mini-tiller transmission case |
| CN202195038U (en) * | 2011-07-20 | 2012-04-18 | 常州钜苓铸造有限公司 | Tank cap of speed reducer |
| CN101372253B (en) * | 2007-08-20 | 2012-07-04 | 雅马哈发动机株式会社 | Engine unit and straddle-type vehicle |
| CN203067744U (en) * | 2012-12-12 | 2013-07-17 | 重庆百吉四兴压铸有限公司 | Motorcycle die-casting type transmission box tail cover |
-
2012
- 2012-12-12 CN CN2012105346204A patent/CN103104685A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0926399A2 (en) * | 1997-12-17 | 1999-06-30 | PIAGGIO & C. S.p.A. | Adaptable transmission housing for motor vehicle with one or more driving wheels |
| CN1963263A (en) * | 2005-11-09 | 2007-05-16 | 本田技研工业株式会社 | Two-wheeled motor vehicle transmission box aeration structure |
| CN101372253B (en) * | 2007-08-20 | 2012-07-04 | 雅马哈发动机株式会社 | Engine unit and straddle-type vehicle |
| CN202195038U (en) * | 2011-07-20 | 2012-04-18 | 常州钜苓铸造有限公司 | Tank cap of speed reducer |
| CN202182168U (en) * | 2011-08-16 | 2012-04-04 | 重庆鑫之源动力设备有限公司 | Die casting type middle case body of mini-tiller transmission case |
| CN203067744U (en) * | 2012-12-12 | 2013-07-17 | 重庆百吉四兴压铸有限公司 | Motorcycle die-casting type transmission box tail cover |
Non-Patent Citations (2)
| Title |
|---|
| 中国国家标准化管理委员会: "《中华人民共和国国家标准 铝合金压铸件GB/T 15114-2009》", 31 July 2009, 中国标准出版社, article "铝合金压铸件GB/T 15114-2009" * |
| 李仁杰: "《压力铸造技术》", 31 July 1996, 国防工业出版社, article "无", pages: 11-16 - 28-29 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103817307A (en) * | 2014-01-13 | 2014-05-28 | 江苏徐航科技有限公司 | Method for solving end face cold shut of deep-cavity thick-wall reinforcing rib of CVT (continuously variable transmission) shell |
| CN103817307B (en) * | 2014-01-13 | 2015-12-30 | 江苏徐航科技有限公司 | A kind of method solving CVT electrodeless variable-speed tank shell deep-cavity thin-wall reinforcement end face cold shut |
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Application publication date: 20130515 |