南京理工大学学报(自然科学版)
南京理工大學學報(自然科學版)
남경리공대학학보(자연과학판)
JOURNAL OF NANJING UNIVERSITY OF SCIENCE AND TECHNOLOGY
2014年
3期
361-365
,共5页
刘国庆%邹衍%管小荣%徐诚
劉國慶%鄒衍%管小榮%徐誠
류국경%추연%관소영%서성
冲击疲劳试验机%枪械自动机%疲劳寿命%凸轮-弹簧%电机转速%弹簧刚度%弹簧预压量%冲击频率%冲击力%冲量
遲擊疲勞試驗機%鎗械自動機%疲勞壽命%凸輪-彈簧%電機轉速%彈簧剛度%彈簧預壓量%遲擊頻率%遲擊力%遲量
충격피로시험궤%창계자동궤%피로수명%철륜-탄황%전궤전속%탄황강도%탄황예압량%충격빈솔%충격력%충량
impact fatigue testing machines%firearms automations%fatigue lifetime%cam-spring%motor speed%spring stiffness%spring preliminary displacement%impact frequencies%impact force%impulses
为对枪械自动机易损件进行冲击疲劳寿命模拟实验,研制了一种新型卧式冲击疲劳试验机。该试验机采用凸轮-弹簧式加载装置加载,通过调节电机转速、弹簧刚度和预压量调节冲击频率和冲击力峰值。对样机性能进行了实验研究,经测试获得冲击力特性,加载运动特性,冲击力峰值、冲量与弹簧预压量之间的定量关系及冲击频率对冲击力峰值的影响情况,为该类冲击疲劳试验机应用提供了依据。实验结果表明该试验机工作原理可行、动作可靠,能够满足自动机易损件冲击疲劳寿命模拟实验要求。
為對鎗械自動機易損件進行遲擊疲勞壽命模擬實驗,研製瞭一種新型臥式遲擊疲勞試驗機。該試驗機採用凸輪-彈簧式加載裝置加載,通過調節電機轉速、彈簧剛度和預壓量調節遲擊頻率和遲擊力峰值。對樣機性能進行瞭實驗研究,經測試穫得遲擊力特性,加載運動特性,遲擊力峰值、遲量與彈簧預壓量之間的定量關繫及遲擊頻率對遲擊力峰值的影響情況,為該類遲擊疲勞試驗機應用提供瞭依據。實驗結果錶明該試驗機工作原理可行、動作可靠,能夠滿足自動機易損件遲擊疲勞壽命模擬實驗要求。
위대창계자동궤역손건진행충격피로수명모의실험,연제료일충신형와식충격피로시험궤。해시험궤채용철륜-탄황식가재장치가재,통과조절전궤전속、탄황강도화예압량조절충격빈솔화충격력봉치。대양궤성능진행료실험연구,경측시획득충격력특성,가재운동특성,충격력봉치、충량여탄황예압량지간적정량관계급충격빈솔대충격력봉치적영향정황,위해류충격피로시험궤응용제공료의거。실험결과표명해시험궤공작원리가행、동작가고,능구만족자동궤역손건충격피로수명모의실험요구。
A new type of horizontal impact fatigue testing machine is designed for simulation tests of impact fatigue lifetime for critical components in firearms automations. A structure of cam-spring is employed as the load maintainer. The impact frequency and the peak of the impact force of the machine are changed by adjusting the motor speed,stiffness and preliminary displacement of the spring. The characters of the impact force and loading motion,the influences of the impact frequency on the peak of the impact force and the quantitative relations between the impact force peak,impulse and preliminary displacement of the spring are obtained through experimental research on the performance of the machine,which provide a basis for the application of the impact fatigue testing machine proposed here. The experimental results show that the testing machine designed here is feasible and reliable and meets the design requirements of impact fatigue experiments for automatic mechanisms.