The invention discloses a bicycle chain wheel manufacturing method comprising the following steps of connecting a first chain wheel and a second chain wheel having the different size as the first chain wheel via a plurality of column pins in advance, moving a combined member formed by the connected first chain wheel and the second chain wheel via the column pins to a forming die, and injection molding a chain wheel seat according to the die shape. First and second inner rings of the first and second chain wheels are respectively provided with a plurality of first common connection members and second common connection members; the first and second common connection members are respectively provided with first positioning holes and second positioning holes; an assembling hole is formed in the center of the chain wheel seat; a plurality of connection arms are arrayed on the periphery of the chain wheel seat; the connection arms cover the first and second common connection members to form a chain wheel product; and rivet connection due to modularization can be avoided, so quick manufacturing and light products can be achieved.
Bicycle chain wheel manufacturing method
2016-02-17
Patent
Elektronische Ressource
Englisch
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