组合机床与自动化加工技术
組閤機床與自動化加工技術
조합궤상여자동화가공기술
Modular Machine Tool & Automatic Manufacturing Technique
2015年
9期
10-12,16
,共4页
并联机构%静刚度%位移叠加法
併聯機構%靜剛度%位移疊加法
병련궤구%정강도%위이첩가법
parallel mechanism%static stiffness%displacement super position method
论文针对2-PPr平面并联机构的静刚度进行了研究，在分析了机构支链类型与受力的情况下，提出了节点位移叠加方法。首先对机构进行子结构划分并分别求各子结构刚度，再对机构进行静力学分析，得出各节点位移，最后应用节点位移叠加方法得出在外力作用下系统末端点的位移，根据外力与机构整体变形之间的关系建立机构整体静刚度模型。通过实例验证了该方法的可行性。
論文針對2-PPr平麵併聯機構的靜剛度進行瞭研究，在分析瞭機構支鏈類型與受力的情況下，提齣瞭節點位移疊加方法。首先對機構進行子結構劃分併分彆求各子結構剛度，再對機構進行靜力學分析，得齣各節點位移，最後應用節點位移疊加方法得齣在外力作用下繫統末耑點的位移，根據外力與機構整體變形之間的關繫建立機構整體靜剛度模型。通過實例驗證瞭該方法的可行性。
논문침대2-PPr평면병련궤구적정강도진행료연구，재분석료궤구지련류형여수력적정황하，제출료절점위이첩가방법。수선대궤구진행자결구화분병분별구각자결구강도，재대궤구진행정역학분석，득출각절점위이，최후응용절점위이첩가방법득출재외력작용하계통말단점적위이，근거외력여궤구정체변형지간적관계건립궤구정체정강도모형。통과실례험증료해방법적가행성。
Static stiffness of the 2-PPr planar parallel manipulator was studied. Based on the analysis of the branched chain type and stress condition of the mechanism, the superposition method of nodal displacement was put forward. First, divided the manipulator into each substructures, and solved their stiffness respective-ly. Then carried out the statics analysis of the manipulator to obtain each node displacements. Last, node displacement superposition method was applied to work out the displacement of the system end point under the action of external force. According to the relationship between the external force and the organization o-verall deformation, the organization overall static stiffness model was set up. Verified the feasibility of the method through an example.
