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This article is about mold design of plastic gears, making the design of the cavity, plastic shrinkage and the mold cavity is difficult to precise calculation of the nonlinear contraction, making the design more difficult; in the molding process of plastic gears, the gate the accuracy of the gear position has significant impact, especially radial; gate form of the distribution of the overall mechanical properties of plastic gears have a major impact. In the plastic gear mold gate design, three-point arc in the same three-point line and evenly distributed manner into the plastic design of the gate.
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