| 塑料直齿轮大小头形成机理分析及解决方法 |
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| 引用本文： | 沈亚强,赵凯,李岩,辛栋,曹伟. 塑料直齿轮大小头形成机理分析及解决方法[J]. 模具工业, 2021, 47(2): 60-64 |
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| 作者姓名： | 沈亚强 赵凯 李岩 辛栋 曹伟 |
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| 作者单位： | 深圳市兆威机电股份有限公司,广东 深圳 518105;郑州大学 橡塑模具国家工程研究中心,河南 郑州 450002 |
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| 基金项目： | 国家自然科学基金资助项目(11672271,11432003)。 |
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| 摘 要： | 针对塑料直齿轮注射成型过程中出现的大小头问题,采用MoldFlow进行仿真分析,揭示了因温度分布不均而产生大小头现象的机理,并结合直齿轮成型试验及检测结果,提出了根据收缩率和变模数法计算型腔定模侧和动模侧的齿形参数、采用线切割加工锥度型腔板以消除成型齿轮大小头的方法。实际结果表明:该方法可有效解决塑料直齿轮成型中的大小头问题,提高了塑料直齿轮的成型精度。
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| 关 键 词： | 塑料齿轮 非均匀收缩 线切割加工 锥度型腔板 注射成型 |
Mechanism analysis and solution for taper plastic spur gear |
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| SHEN Ya-qiang,ZHAO Kai,LI Yan,XIN Dong,CAO Wei. Mechanism analysis and solution for taper plastic spur gear[J]. Die & Mould Industry, 2021, 47(2): 60-64 |
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| Authors: | SHEN Ya-qiang ZHAO Kai LI Yan XIN Dong CAO Wei |
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| Affiliation: | (Shenzhen Zhaowei Machinery&Electronics Co.,Ltd.,Shenzhen,Guangdong 518105,China;National Engineering Research Center of Advanced Polymer Processing Technology,Zhengzhou University,Zhengzhou,Henan 450002,China) |
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| Abstract: | To study the taper phenomenon of plastic spur gear,the MoldFlow software was used to analyze the mechanical mechanism of non-uniform shrinkage because of uneven temperature distribution.Combined the moulding test and result of spur gear,the gear parameters of cavity and core were calculated separately according to the shrinkage ratio and varied modulus method.In order to eliminate the taper of spur gear,the WEDM was adopted to machine the taper gear cavity plate.The actual results showed that the method could effectively solve the taper problem and improve the gear precision. |
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| Keywords: | plastic spur gear non-uniform shrinkage WEDM taper gear cavity plate injection moulding |
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