澆口對玻纖增強塑料齒輪精度及力學性能的影響
沈亞強1，張楊1，趙凱1，辛棟1，曹偉2（1.深圳市兆威機電股份有限公司，廣東 深圳 518105； 2.鄭州大學橡塑模具國家工程研究中心，河南 鄭州 450002）
?摘要：通過對3點進料玻纖增強塑料齒輪的齒形精度及力學性能進行測試，結合MoldFlow模擬仿真結果，分析了齒輪嚙合精度低、齒輪強度一致性差的原因。針對此問題，提出采用中心進料的設計方案，實現了玻纖的均勻排列，結果證明該方法可有效提高玻纖增強塑料齒輪的嚙合精度和齒輪強度的一致性。
關鍵詞：玻纖增強塑料齒輪；中心進料；玻纖取向；注射成型；嚙合精度
中圖分類號：TG76 文獻標識碼：B
文章編號：1001-2168（2021）08-0046-04
DOI：10.16787/j.cnki.1001-2168.dmi.2021.08.011
Effect of gate design on precision and mechanical property of glass fiber-reinforced plastic gear
SHEN Ya-qiang1, ZHANG Yang1, ZHAO Kai1, XIN Dong1, CAO Wei2 (1.Shenzhen Zhaowei Machinery & Electronics Co., Ltd., Shenzhen, Guangdong, 518105, China; 2.National Engineering Research Center of Advanced Polymer Processing Technology, Zhengzhou University, Zhengzhou, Henan 450002, China)
Abstract:The precision and mechanical property of glass fiber-reinforced plastic gears moulded by three pin-point gates were measured. Combined with the MoldFlow simulation results, the reasons of poor meshing precision and tooth strength consistency were analyzed. To solve the problem, the center gate was used, and the results showed that the meshing precision and tooth strength consistency both were improved.
Key words:glass fiber-reinforced plastic gear; central gating; glass fiber orientation; injection moulding; meshing precision