内曲线马达曲线导轨表面热处理工艺优化  

Optimization of Heat Treatment Process on the Surface of the Cam Lobe Motor Curved Guide Rail

作　　者：师文广 张红娟 杨亚森 张晋[2] 高进 李莹 SHI Wenguang;ZHANG Hongjuan;YANG Yasen;ZHANG Jin;GAO Jin;LI Ying(Ningbo STF Hydraulic Transmissions Company,Ningbo Zhejiang 315800,China;School of Mechanical Engineering,Yanshan University,Qinhuangdao Hebei 066004,China)

机构地区：[1]宁波斯达弗液压传动有限公司,浙江宁波315800 [2]燕山大学机械工程学院,河北秦皇岛066004

出　　处：《机床与液压》2024年第15期116-121,共6页Machine Tool & Hydraulics

基　　金：国家重点研发计划(2021YFB3400503);河北省高等学校科学技术研究项目(BJK2023043)。

摘　　要：常规的整体感应器中频淬火法会导致曲线导轨内表面硬化层硬度、深度不均匀,低速大扭矩内曲线液压马达在重载工况下极易造成马达曲线导轨失效。提出一种曲线导轨表面热处理中频淬火工艺优化方法,在常规方法的基础上,应用曲线磨床仿形的加工原理,即采用数控仿形淬火来进行热处理。并分别对常规淬火以及优化后的数控仿形淬火处理后曲线导轨性能参数进行测试。通过对比分析可知:优化后的数控仿形淬火所得曲线导轨曲面硬度相比常规淬火方法更高、曲线导轨硬化层深度均匀性更好,硬度提高了(3~5)HRC,硬化层深度提高了1.5~3.5 mm。采用该新工艺生产的曲线导轨的马达已投入使用,曲线导轨无质量问题反馈。The conventional inductor medium frequency quenching method will lead to uneven hardness and depth of the inner surface hardening layer of the curved guide rail,and it is easy to cause failure of the motor curved guide rail of low-speed and high-torque internal curve hydraulic motor under heavy-duty condition.An optimization method for medium-frequency quenching process of curved rail surface heat treatment was proposed.On the basis of conventional methods,the processing principle of curve grinding machine profiling was applied,that was,computer numerical control profiling was used for heat treatment.And the performance parameters of curved guide rail after conventional quenching and optimized CNC profiling quenching treatment were tested respectively.Through analysis and comparison,it can be seen that the surface hardness of the curved guide rail obtained by the optimized CNC profiling quenching is higher than that of the conventional quenching method,and the depth uniformity of the curved guide rail hardening layer is better.The hardness increases by 3HRC to 5HRC,the hardening layer depth increases by 1.5 mm to 3.5 mm.The motor with the curved guide rail produced by the new process has been put into use,and no quality question about the curved guide rail has been fedback.

关 键 词：内曲线液压马达 曲线导轨 中频淬火 数控仿形淬火 工艺优化 

分 类 号：TG156.33[金属学及工艺—热处理]