本文選題：仿生機械 + 半轉機構�。� 參考：《機械設計》2017年10期

【摘要】：半轉機構是一種用于動物運動仿生的新機構,對其進行簡約化設計是提高仿生機械性能的需要。文中在半轉機構不動點運動特征基礎上,提出從結構簡單的曲柄搖塊機構到半轉機構的演繹設計方法。指出當曲柄搖塊機構的搖塊處于與動軸重合的特殊位置時,導桿的回程擺動消失而演變?yōu)榘朕D桿。對于在此特殊位置可能出現(xiàn)的運動干涉,給出了帶槽動軸及搖塊對置兩種破解方案。對于破解干涉后出現(xiàn)的機構奇異性問題,提出了帶槽動軸與轉動滑塊組合及止轉片與止轉槽組合兩種局部約束方案,保證了新型半轉機構的運動穩(wěn)定性。試驗結果表明,文中提出的干涉破解、奇異性消除及局部約束設計等方法具有可行性和正確性,不但實現(xiàn)了結構極簡單的半轉機構的簡約化設計,而且局部約束消除奇異性方法對于機構創(chuàng)新設計具有借鑒意義和參考價值。
[Abstract]:Semi-rotating mechanism is a new kind of bionic mechanism for animal motion. It is necessary to improve the mechanical performance of bionic mechanism by simplified design. Based on the fixed point motion characteristics of the semi-rotating mechanism, a deductive design method from the crank rocker mechanism to the semi-rotating mechanism is presented in this paper. It is pointed out that when the crank of the crank mechanism is in a special position which coincides with the moving shaft, the return swing of the guide rod disappears and evolves into a half rotating rod. For the possible motion interference in this special position, two schemes are given: the shafts with grooves and the shafts facing the shafts. In order to solve the singularity problem of mechanism after interference, two kinds of local constraint schemes, that is, the combination of moving shaft with slot and rotating slider, and the combination of stop plate and stop slot, are put forward to ensure the motion stability of the new semi-rotating mechanism. The experimental results show that the proposed methods, such as interference solution, singularity elimination and local constraint design, are feasible and correct, and not only the simplified design of the semi-rotating mechanism with very simple structure is realized. Moreover, the method of eliminating singularity with local constraints has reference significance and reference value for mechanism innovation design.
【作者單位】： 安徽工業(yè)大學機械工程學院;
【基金】：國家自然科學基金資助項目(51375014)
【分類號】：TH112;TH122

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