Abstract

Plastic gears are more and more widely used in many industrial machine elements. Plastic gear has higher properties such as light weight, wear resistance, and vibration absorbing ability than metallic gears. But, in case of using an inaccurate plastic gear, its tooth breakage happen and fatigue life is shortened due to increase of applying load and temperature rising on the tooth flank. Inaccuracy of plastic gears such as pitch circle roundness and tooth profile generates vibration and noise. In this study, an internal plastic gears which is molded by a new injection mold structure are developed. The new mold structure is called the HR3P(hot runner type 3plate mold) that has an improved runner system in order to have good filling balance. As a result from this study, an internal gear with very accurate roundness was developed by using design of experiment.

주제어

#핫 런너 3단 금형   #플라스틱 기어   #체적수축   #실험계획법   #신호대 잡음 비  

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1. Jung, Tae-Sung 2011. "Optimization of the Deflection for large Disk type Gear of Auto Phoropter" 한국정밀공학회지 = Journal of the Korean Society of Precision Engineering, 28(3): 370~376  원문보기 상세보기
2. Choi, Young-Geun 2014. "The Application of 3D Injection Molding Simulation in Gate Location Selection for Automotive Console" 한국동력기계공학회지 = Journal of the korean society for power system engineering, 18(3): 51~58  원문보기 상세보기