徐彩红,王优强,张同钢,王立梅.往复运动齿轮齿条传动不同换向位置的润滑分析[J].表面技术,2018,47(1):78-84.
XU Cai-hong,WANG You-qiang,ZHANG Tong-gang,WANG Li-mei.Lubrication Analysis of Commutation Position of Reciprocating Gear Rack[J].Surface Technology,2018,47(1):78-84
往复运动齿轮齿条传动不同换向位置的润滑分析
Lubrication Analysis of Commutation Position of Reciprocating Gear Rack
投稿时间:2017-06-12  修订日期:2018-01-20
DOI:10.16490/j.cnki.issn.1001-3660.2018.01.013
中文关键词:  往复运动  齿轮齿条  弹性流体动力润滑  换向位置  热效应
英文关键词:reciprocating motion  gear rack  EHL  commutation position  thermal effect
基金项目:国家自然科学基金(51575289,21705270);山东省自然科学基金项目(ZR2016EEP03)
作者单位
徐彩红 青岛理工大学 机械工程学院,山东 青岛 266520 
王优强 青岛理工大学 机械工程学院,山东 青岛 266520 
张同钢 青岛理工大学 机械工程学院,山东 青岛 266520 
王立梅 青岛理工大学 机械工程学院,山东 青岛 266520 
AuthorInstitution
XU Cai-hong School of Mechanical Engineering, Qingdao University of Technology, Qingdao 266520, China 
WANG You-qiang School of Mechanical Engineering, Qingdao University of Technology, Qingdao 266520, China 
ZHANG Tong-gang School of Mechanical Engineering, Qingdao University of Technology, Qingdao 266520, China 
WANG Li-mei School of Mechanical Engineering, Qingdao University of Technology, Qingdao 266520, China 
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中文摘要:
      目的 通过求解往复运动齿轮齿条在不同换向位置时一个啮合周期内的压力、膜厚和温度,来获得往复运动齿轮齿条机构换向过程发生在沿啮合线上不同位置时的润滑状况,为往复运动齿轮齿条机构的润滑设计提供理论依据。方法 将齿轮齿条的传动模型简化为圆柱与无限大平面之间的运动,建立往复运动齿轮齿条传动的热弹流润滑模型。压力求解采用多重网格法,弹性变形采用多重网格积分法,计算得到往复运动齿轮齿条过程中在不同换向位置时一个啮合周期内的中心压力、中心膜厚、最小膜厚和最高温度,并与现有的实验结果进行比较验证。结果 无论换向位置处于啮合线上哪个区域,换向点膜厚在整个换向过程中仍然最小,且换向过程一开始的减速并没有导致油膜压力直接降低,而是升高后再降低,产生压力波动。往复运动齿轮齿条换向位置越靠近啮出点,膜厚越厚。结论 往复运动换向过程导致润滑状态变差,换向点仍然是往复运动齿轮齿条润滑过程中的危险点,换向位置越靠近啮出点,膜厚越大,但是整个换向过程必须发生在单齿啮合后的双齿啮合区。
英文摘要:
      The work aims to obtain lubrication condition of reciprocating gear rack mechanism in different position along line of action during commutation processby calculating pressure, film thickness and temperature of the mechanism in different commutation position in a mesh cycle, so as to provide theoretical basis for lubrication design of reciprocating gear rack mechanism. Transmission model of the gear rack was simplified to motion between cylinder and infinite plane, a thermal elastohydrodynamic lubrication model was established for reciprocating gear rack transmission. The pressure was solved in multi-grid method, and elastic deformation in multiple-grid integration method, then centeral pressure and film thickness, minimum film thickness and maximum temperature of the reciprocating gear rack in one mesh cycle in different commutation position were calculated and compared with existing experimental results. Film thickness of the reversing point was still the lowest in the whole commutation process regardless of the area in the line of action. Initial deceleration of the commutation process didn't lead to direct reduction of oil film pressure, but the pressure first increased and then decreased instead, and fluctuated as well. The closer the commutation position of the gear rack was to engaging-out point, the thicker the film was. The reciprocating commutation motion leads to worse lubrication state, and commutation point is still a dangerous point in the lubrication process of reciprocating gear rack. The closer the position is to the engaging-out point, the thicker the film is, but the whole commutation process must occur in the double teeth meshing area after the single tooth meshing.
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