摘要
提出一种一次性机械的新概念,即在航天航空或其他一些特殊的领域经常使用的各种单次使用的短寿命的机械,可称其为一次性机械。相对于常规机械,一次性机械主要特点为体积小、重量轻,使用过程中一般不会发生高周疲劳现象。这类机械目前没有一个成熟的可遵循的设计理论。因此,提出一次性机械新的设计理念,在设计过程中不考虑高周疲劳等因素,主要考虑静强度的要求,最大限度地减小机械结构的体积和重量。基于一次性机械设计理念,对某型号箭用电动舵机减速装置的锥齿轮和柔轮进行了强度设计,在相同载荷情况下,采用一次性机械设计理念的齿轮模数减小至40%。对该型号箭用舵机减速器的性能测试表明,运用一次性机械设计理念得到的设计结果满足设计指标的要求,验证了一次性机械设计理念的有效性。
The concept of disposable mechanical elements is proposed. Disposable mechanical elements with extremely short lives are widely used in the aerospace and some other special fields. Disposable mechanical elements have smaller volume and lighter weight than general mechanical elements. During the running process of disposable mechanical elements, high cycle fatigue failure will not occur. Until now, there is no systematically design theory used in the disposable mechanical elements design. Therefore, the static strength design criteria is proposed which could take place of high cycle fatigue failure checking in the disposable mechanical elements design, which could decrease the volume and weight of mechanical elements. The design theory is used in the design of bevel and fleshliness of certain type rocket steering reducer. Under the same load level, the gear modulus reduces by 40% by using the disposable mechanical elements. An experiment is conducted to test the performance of the reducer. The experiment result shows that the reducer could meet the requirement of the initial design targets. It is proved that the disposable mechanical elements design theory is fairly effective.
出处
《机械工程学报》
EI
CAS
CSCD
北大核心
2014年第1期152-156,共5页
Journal of Mechanical Engineering
基金
国家自然科学基金资助项目(51005051)
关键词
一次性机械零件
机械设计
电动舵机减速装置
disposable mechanical elements： mechanical design： electric steering engine reducer
