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Method for processing straight-shaped vertical tube of motorcycle

A processing method and motorcycle technology, applied to bicycle accessories, steering mechanisms, transportation and packaging, etc., to achieve the effects of reduced production costs, simple equipment, and small investment

Inactive Publication Date: 2011-07-20
周海兴
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the process of processing, it is very difficult to master the forging to the right point, resulting in unstable product size, and a lot of waste products in the production of a batch of products; forging needs to heat up the pipe, and the inside and outside of the standpipe will produce oxide shells, and bend Deformation, low coaxial ratio, uneven wall thickness, and difficult to meet the requirements for smoothness; production and forging of a pipe is time-consuming and the efficiency of material consumption is relatively low

Method used

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  • Method for processing straight-shaped vertical tube of motorcycle
  • Method for processing straight-shaped vertical tube of motorcycle
  • Method for processing straight-shaped vertical tube of motorcycle

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] B, the outer diameter of the bottom of the seamless steel pipe is compressed, and the seamless steel pipe 15 after step A processing is sent into the crimping machine for processing, (referring to figure 2 , image 3 , Figure 4 ) The crimping machine is composed of a crimping module 10, a crimping mold core 11, a crimping oil cylinder 12, a crimping machine piston 13 and a crimping body 14. The crimping oil cylinder 12 is fixed on the crimping body 14 by a fixed support column. The crimping machine piston 13 is housed in the crimping oil cylinder 12. Eight crimping modules 10 are placed in the center of the crimping machine piston 13. The crimping modules 10 are distributed in a circle. Each crimping module 10 is long at the bottom and short at the top, forming a truncated cone. The inner sides of the eight crimping modules 10 are circled, and there is a gap for workpieces to be inserted in the center. The crimping mold core 11 is directly opposite to the top of the...

Embodiment 2

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Abstract

The invention discloses a motorcycle standpipe processing method, comprising the steps of using a hydraulic press to implement an external diameter expansion on an upper end part of a steel pipe to be processed, using a presser to extrude a lower end part of the steel pipe, and compressing the external diameter of the steel pipe to obtain the motorcycle standpipe. With no need of moulds, the invention is processed by two simple procedures and has simple and distinctive processing technology, relatively small investment, simple required apparatuses, relatively high processing efficiency, high precision of the processed motorcycle standpipe and greatly reduced production cost.

Description

technical field [0001] The invention belongs to a processing method of a motorcycle accessory, and in particular relates to a processing method of a straight riser in a motorcycle steering column assembly. Background technique [0002] The center pipe of the motorcycle steering column assembly is a step with three sections of different diameters. In the early stage, the center pipe of the motorcycle steering column assembly was processed by forging. Firstly, the steel pipe is heated up, and then the air hammer is continuously hammered and forged into a cone shape. In the process of processing, it is very difficult to master the forging to the right point, resulting in unstable product size, and a lot of waste products in the production of a batch of products; forging needs to heat up the pipe, and the inside and outside of the standpipe will produce oxide shells, and bend Deformation, low coaxial ratio, uneven wall thickness, and difficult to meet the requirements for smo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B21D41/02B21D41/04B62K21/18
Inventor 周海兴
Owner 周海兴
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