摘要
在机械零件的加工过程中,受力变形是一个常见问题,尤其对于齿轮泵而言,其腔体密封的严格要求,使得齿轮加工质量至关重要。齿轮泵齿轮的隐形缺陷可能会在使用过程中威胁到腔体密封安全。为确保齿轮泵齿轮加工质量和精度,研究了齿轮泵齿轮机械加工受力极限测试方法。在测试准备阶段,选择了合适的测试设备和齿轮泵齿轮,并确定切削加工方式。通过设计齿轮加工受力计算方法,分析齿轮的受力状态,构建湍流模型以压缩加工流动值,并利用弹性耦合关系联系齿轮的内力与变形。在高速加工中心进行切削力测试时,分别对不同轴向上的齿轮受力极限值进行了测量。测试结果表明,当轴向切削深度低于1.0 mm时,齿轮的最大受力值为240 N,出现在OY轴方向;而当轴向切削深度超过2.0 mm时,最大受力值为140 N,出现在OX轴方向;此外,齿轮的受力随厚度和刚度变化而呈现周期性变化,当齿轮刚度最小时,其受力值也最小,表现为齿轮顶部的受力最小,而齿轮根部的受力值最大。
In the process of machining mechanical parts,deformation due to force is a common issue.This is particularly critical for gear pumps,where the strict requirements for cavity sealing emphasize the importance of high-quality gear machining.Invisible defects in gears of the gear pump can threaten the safety of cavity sealing during operation.To ensure the machining quality and accuracy of the gears of the gear pump,this study investigates the testing methods for force limits for gear machining.During the testing preparation phase,appropriate testing equipment and gears of the gear pump were selected,and the machining method was determined.By designing the gear machining force calculation method,classifying the force state of gears,constructing a turbulence model to compress the machining flow values,and utilizing the elastic coupling relationship to link the internal force and deformation of gears.During the cutting force test on a high-speed machining center,the force limit values of gears in different axial directions were measured separately.The test results indicate that,when the axial cutting depth is less than 1.0 mm,the maximum gear force is 240 N along the OY axis.When the axial cutting depth exceeds 2.0 mm,the maximum force is 140 N along the OX axis.Furthermore,the force on the gear exhibits a cyclic variation with changes in thickness and stiffness.When the gear stiffness is at its lowest,the force value is also minimized,which is manifested as the smallest force at the gear tip and the largest force at the gear root.
作者
唐永忠
叶家福
邓广
TANG Yong-zhong;YE Jia-fu;DENG Guang(School of Marine Engineering,Guilin University of Electronic Technology,Beihai 536000,China)
出处
《液压气动与密封》
2025年第3期23-29,共7页
Hydraulics Pneumatics & Seals
基金
国家自然科学基金(41562018)
广西创新驱动发展专项(AA19254016)
桂林电子科技大学海洋工程学院课程思政示范课程项目(北海海院〔2023〕4号)。
关键词
加工受力
齿轮泵
受力极限
切削加工
machining force
gear pump
force limit
cutting machining
