电动缸试验过程梯形螺母咬死的解决方案  

Solution for Trapezoidal Nut Bite Dead During the Test Process of Electric Cylinders

作　　者：丁大江 何燚 王培 武玉娇 于亮 孙洪涛 DING Da-jiang;HE Yi;WANG Pei;WU Yu-jiao;YU Liang;SUN Hong-tao(Beijing Long March Tianmin High-tech Co.,Ltd.,Beijing 100023,China;Beijing Institute of Space Launch Technology,Beijing 100076,China)

机构地区：[1]北京长征天民高科技有限公司,北京100023 [2]北京航天发射技术研究所,北京100076

出　　处：《液压气动与密封》2023年第2期52-54,60,共4页Hydraulics Pneumatics & Seals

摘　　要：电动缸是把伺服电机与传动丝杠设计成为一体的模块产品,可以实现平移、旋转、压紧等运动。在产品出厂前需求完成行程范围测试、承载能力测试、传动精度测试及磨合试验等多个测试项目。实际在测试中经常出现活塞杆运行超出行程范围,造成梯形螺母与端盖或轴承衬套咬死的情况。该文通过分析电动缸的结构及工作原理,提出了防止梯形螺母咬死的解决方案,改进了行程限位相关结构,搭建了专用加载试验台,通过样机试验验证,方法可靠,满足电动缸功能性能试验要求。The electric cylinder is a modular product that integrates the servo motor and the lead screw design,which can realize the movement of translation,rotation,compression and so on.Before the product leaves the factory,it is necessary to complete a number of test items such as stroke range test,load carrying capacity test,transmission accuracy test and running-in test.In practice,in practice,it is common for the piston rod to run out of range of travel,causing the trapezoidal nut to bite off the end cap or bearing bushing.In this paper,through the analysis of the structure and working principle of the electric cylinder,the solution to prevent trapezoidal nut bite is proposed,the relevant structure of the stroke limit is improved,and a special loading test bench is built,which is verified by the prototype test,and the method is reliable to meet the functional performance test requirements of the electric cylinder.

关 键 词：电动缸 梯形螺母 行程限位 加载试验台 

分 类 号：TH137[机械工程—机械制造及自动化]