Three Special Forms of Epicycloid Profiles of Cam Rotors and Their Performance Analysis

Chen Qinghong; Li Yulong; Zhang Pingshan

doi:10.16578/j.issn.1004.2539.2022.10.015

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Three Special Forms of Epicycloid Profiles of Cam Rotors and Their Performance Analysis

Test·Analysis | 更新时间：2022-11-05

- Three Special Forms of Epicycloid Profiles of Cam Rotors and Their Performance Analysis
- Journal of Mechanical Transmission Vol. 46, Issue 10, Pages: 99-103(2022)
- 作者机构：
  
  1.福建林业职业技术学院信息工程系，福建南平 353000
  2.宿迁学院机电工程学院，江苏宿迁 223800
  3.华闽南配集团股份有限公司，福建南平 353000
- 作者简介：
- 基金信息：
- DOI：10.16578/j.issn.1004.2539.2022.10.015
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陈庆红,李玉龙,张平山.凸轮转子外摆线轮廓的3种特定形态及其性能分析[J].机械传动,2022,46(10):99-103.

Chen Qinghong,Li Yulong,Zhang Pingshan.Three Special Forms of Epicycloid Profiles of Cam Rotors and Their Performance Analysis[J].Journal of Mechanical Transmission,2022,46(10):99-103.
陈庆红,李玉龙,张平山.凸轮转子外摆线轮廓的3种特定形态及其性能分析[J].机械传动,2022,46(10):99-103. DOI： 10.16578/j.issn.1004.2539.2022.10.015.

Chen Qinghong,Li Yulong,Zhang Pingshan.Three Special Forms of Epicycloid Profiles of Cam Rotors and Their Performance Analysis[J].Journal of Mechanical Transmission,2022,46(10):99-103. DOI： 10.16578/j.issn.1004.2539.2022.10.015.

摘要

为寻求泵用外摆线凸轮转子的最佳轮廓构造，基于一种双对称方法，以滚径比为构造变量，构建出与外摆线相对应的内轭线方程；分析了内轭线分别为内摆线、直线段、固定点3种特定形态下泵的性能特点。结果表明，滚径比对泵的综合性能的影响具有前急后缓的特点，滚径比越大，形状系数越大，轻量化效果越好，但流量脉动性能越差；直型内轭线下的泵轻量化、流量脉动和易加工的综合性能最好；点型内轭线下的形状系数最大、加工最容易；内直型外摆线为凸轮转子的一种较为理想的轮廓构造。

Abstract

Focusing on optimal profile construction of epicycloid cam rotors for pump, using the bisymmetric method and taking the rolling radius ratio as the structural variables, an equation of inner conjugate curve corresponding to epicycloid is derived; and then the different performance features of the pump under the three specific forms of hypocycloid, straight line segments and fixed-point as inner conjugate curves are analyzed. All results show that the effect of rolling radius ratio on pump performance is rapid in the front and slow in the back; the larger the rolling radius ratio is, the larger the shape factor is; and the better the lightweight effect is, the worse the flow ripple performance is; the special inner straight form provides the best overall performance for lightweight, flow ripple and easy machining; the special inner fixed-point form provides the maximum shape factor and easiest machining under any profile, etc. It is concluded that the inner straight form is an ideal profile structure for epicycloid cam rotors.

关键词

凸轮转子外摆线滚径比形状系数容积利用系数流量脉动系数轻量化

Keywords

Cam rotorEpicycloidRolling radius ratioShape factorVolume utilization factorFlow ripple factorLightweight

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