| 摘要 |
A sprocket mold system is provided for inexpensive molding of a number of different diameter sprockets each having an idential sprocket tooth size. Each tooth is formed between a pair of tooth-defining elements having accurately curved surfaces, these elements being accurately positioned in a mold insert of the desired diameter. Different mold inserts are provided for different numbers of sprocket teeth to give different diameters of final molded sprockets. A modification of the invention is adapted to the manufacture of gears. While the principles of gear design preclude the use of the same tooth-defining elements for gears of different diameters the method of forming and mounting the tooth-defining elements provides extreme accuracy of tooth molding.
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