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Motorcycle die-casting-type transmission case shell

A technology for transmission boxes and motorcycles, applied in transmission boxes, components with teeth, etc., can solve the problems of complicated processing, large specific gravity, low precision, etc., and achieve the effects of simple processing, light weight and strong versatility

Inactive Publication Date: 2013-05-15
CHONGQING BAIJI SIXING DIE CASTING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

This product size is not universal, making assembly difficult
The density of cast iron is 7.8 (g / cubic centimeter), which makes the mass of the transmission box large, and the proportion of assembly in the machine is relatively large, which is not conducive to the lightweight of the machine
Sand casting has defects such as low production efficiency, 7-8 minutes per piece, low output, large machining allowance, low precision, high burning loss, harsh production environment, complicated follow-up processing, rough appearance, etc.

Method used

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  • Motorcycle die-casting-type transmission case shell

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0010] Such as figure 1 Shown: motorcycle die-cast transmission case housing, including aluminum alloy housing 1, housing 1 is provided with air window 3, air outlet 2, parts installation hole 4, fastener installation hole 5, housing 1 The wall thickness is D, and D is 3.5mm. The outer surface of the shell 1 is provided with reinforcing ribs 6. The reinforcing ribs 6 have a mesh structure and are distributed in the air window 3, the air outlet 2, the component mounting holes 4, and the fastener mounting holes. 5, the fastener installation hole 5 and the housing 1 are integral die-casting parts.

[0011] In this embodiment, because the transmission box adopts the die-casting manufacturing process, and the transmission box housing 1 is made of aluminum alloy material, and the wall thickness of the housing 1 is D, and D is 3.5mm, compared with the housing of the existing die-casting process It is thinner, which reduces the quality of the transmission box housing 1 and reduces th...

Embodiment 2

[0013] Such as figure 1 Shown: motorcycle die-cast transmission case housing, including aluminum alloy housing 1, housing 1 is provided with air window 3, air outlet 2, parts installation hole 4, fastener installation hole 5, housing 1 The wall thickness is D, and D is 4mm. The outer surface of the shell 1 is provided with reinforcing ribs 6. The reinforcing ribs 6 have a mesh structure and are distributed in the air window 3, the air outlet 2, the component mounting hole 4, and the fastener mounting hole 5. Around, the fastener installation hole 5 and the housing 1 are integral die-casting parts.

[0014] In this embodiment, because the transmission box adopts the process of die-casting manufacturing, and the transmission box housing 1 is made of aluminum alloy material, and the wall thickness of the housing 1 is D, and D is 4mm, compared with the housing of the existing die-casting process thinner, which reduces the quality of the transmission box housing 1 and reduces the ...

Embodiment 3

[0016] Such as figure 1 Shown: motorcycle die-cast transmission case housing, including aluminum alloy housing 1, housing 1 is provided with air window 3, air outlet 2, parts installation hole 4, fastener installation hole 5, housing 1 The wall thickness is D, and D is 5mm. The outer surface of the shell 1 is provided with reinforcing ribs 6. The reinforcing ribs 6 have a mesh structure and are distributed in the air window 3, the air outlet 2, the component mounting hole 4, and the fastener mounting hole 5. Around, the fastener installation hole 5 and the housing 1 are integral die-casting parts.

[0017] In this embodiment, because the transmission box adopts the process of die-casting manufacturing, and the transmission box housing 1 is made of aluminum alloy material, and the wall thickness of the housing 1 is D, and D is 5mm, compared with the housing of the existing die-casting process thinner, which reduces the quality of the transmission box housing 1 and reduces the ...

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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 shell. A die-casting manufacturing process is adopted by a transmission case, and meanwhile, the transmission case shell is made of aluminum alloy materials, and the wall thickness of the shell is 3.5-5mm. Compared with the prior die-casting process, the shell is thinner, and therefore the quality of the transmission case and the proportion of the transmission case in the process of integral assembly of the transmission case are reduced; meanwhile, reinforcing ribs are arranged on the outer surface of the transmission shell to strengthen the integral intensity of the shell; and furthermore, in the process of die-casting of the transmission case shell, dies adopted are very high in precision standard and general standard, and therefore the die-casting-type transmission case shell has more generality.

Description

technical field [0001] The invention belongs to the technical field of engines, and in particular relates to a motorcycle die-cast transmission case housing. Background technique [0002] At present, the transmission box is made of cast iron, with black casting as the basic process. In this way, the size of the product is not universal, making assembly difficult. The density of cast iron is 7.8 (g / cubic centimeter), which makes the mass of the transmission box large, and the proportion of assembly in the machine is relatively large, which is not conducive to the lightweight of the machine. Sand casting has defects such as low production efficiency, 7-8 minutes per piece, low output, large machining allowance, low precision, high burning loss, harsh production environment, complicated follow-up processing, and rough appearance. Therefore, many companies now change the original casting process to die-casting process, which changes the size of the transmission box of the cast...

Claims

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Application Information

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IPC IPC(8): F16H57/02
Inventor 沈成溜冉志刚
Owner CHONGQING BAIJI SIXING DIE CASTING
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