Method of producing bicycle ratchet bushing

Details Method of producing bicycle ratchet bushing Method of producing bicycle ratchet bushing

2008-11-24

2010-11-16

Lorengo, Jerry (Department: 1793)

Metal treatment

Process of modifying or maintaining internal physical...

Heating or cooling of solid metal

C148S550000, C148S689000, C446S440000

Reexamination Certificate

active

07833364

ABSTRACT:
A method of producing bicycle ratchet bushing is provided, wherein an alloyed fundamental material is applied to the processes of a modeling process and a detailing treatment to form a product of bicycle ratchet bushing. Wherein, when the processes of drilling and tapping a hole of the modeling process are completed, the tapped hole of the workpiece is connected to a screw rod, and the screw rod is clamped by a drawing machine, so that the workpiece can be penetrated through the mold of the drawing machine to proceed with the drawing process. When the drawing process is working, it is not necessary to apply a head-hitting process to the workpiece as the conventional drawing method does, therefore the outer teeth of the ratchet of the workpiece will not be deformed by an external force, and can penetrated into the mold for further drawing process, therefore the whole manufacturing processes can be controlled efficiently.

REFERENCES:
patent: 5557962 (1996-09-01), Takikawa
patent: 7214281 (2007-05-01), Gheorghe et al.
ASTM International, Designation: B221M-02, Standard Specification For Aluminum And Aluminum-Alloy Extruded Bars, Rods, Wire, Profiles, And Tubes [Metric], Oct. 10, 2002.
Overview of materials for 2000 Series Aluminum Alloy.
Overview of materials for 7000 Series Aluminum Alloy.
Magnesium AZ31B, Extruded Hollow Shapes.
Magnesium AZ61A-F, Extruded Hollow Shapes.
Magnesium AZ80A-T5, Extruded.
Magnesium ZK60A-T5,Extruded.

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