摘要
提出将一种矩形直齿条连接结构用于压力机活动横梁与立柱的紧密连接,以保证在各行程位置,活动横梁与立柱能够作为一个整体承载。利用有限元软件MSC.Marc获取了该结构在不同负载力和接触状态下的接触应力云图。结果表明,随着负载力增加,最大接触应力增加,当负载力超过一定数值时,最大接触应力与负载力呈线性关系,且固定齿条的最大接触应力在数值和增幅上均明显高于移动齿条;当活动横梁处于不同行程位置时,即该结构呈不同接触状态,最大接触应力数值并无显著变化,可以基于固定齿条应力水平进行结构强度校核。
A kind of rectangular straight rack connecting structure is proposed for tight junction between movable beam and stand column, so as to ensure the load bearing entirety of movable beam and stand column in each stroke position. The contact stress contour under different loading and in different contact state is obtained by using finite element software MSC. Marc. The results show that the max contact stress is increased with the increasing of load, and when the load exceeds certain value, the max contact stress has a linear relation with load, and also the value and increase amplitude of max contact stress of fixed rack is much higher than that of movable rack; when the movable beam is in different stroke position, namely the structure has different contact state, the value of max contact stress didnt change obviously, therefore, the structural strength can be checked on the basis of stress level of fixed rack.
出处
《机械传动》
CSCD
北大核心
2015年第9期133-135,141,共4页
Journal of Mechanical Transmission
关键词
直齿条
接触应力
有限元
Straight rack Contact stress Finite element
作者简介
杨文一（1970-），男，山西繁峙县人，工程师。
