| 摘要 |
A worm wheel manufacturing method for the reduction gear of the steering system using the injection molding is provided that the minimum cooling period required for debubbling is reduced. A worm wheel manufacturing method for the reduction gear of the steering system using the injection molding comprises as follows. Nylon66 resin melting liquid is injected under the condition of injection pressure of 90-110 kg / cm2, injection speed of 13-17 mm / sec, measurement speed of 10-20 mm / sec, molding temperature of the celsius 70-90 drawing, injection time of 30-40 second, weighing place of 110-130mm. The outer circumference is tooth-processed. The injection position in the injection molding is 90mm, 60mm, 40mm, 20mm, 5mm. The raw material is flowed into inside if the raw material is put into through a hopper(1).
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