木材抓具同步机构的优化设计  

Optimal Design of Wood Grab's Synchronous Mechanism

作　　者：臧克江[1] 陈明刚[1] 牛政科[1] 刘新柱[1] 王冬[1] 

机构地区：[1]佳木斯大学机械工程学院,黑龙江佳木斯154007

出　　处：《佳木斯大学学报（自然科学版）》2010年第5期740-743,共4页Journal of Jiamusi University：Natural Science Edition

基　　金：佳木斯大学重点课题(Lzy2008-004)

摘　　要：木材抓具两颚爪的同步性直接影响其工作特性,也是设计木材抓具工程中要解决的关键技术问题.通过对木材抓具进行分析,建立了数学模型,并利用MATLAB优化工具箱对木材抓具两颚爪的同步性进行优化设计,确定了木材抓具关键部件的结构尺寸及其位置关系,提高了木材抓具的同步性,简化了设计过程.在优化设计过程中发现,采用反四杆机构实现木材抓具颚爪在工作过程中完全同步是不可能的,必须合理确定反四杆机构关键部件的尺寸、相对位置及其运动范围,使木材抓具在一定工作范围内达到尽可能的同步.The working performance of the wood grabs is greatly effected by the synchronization of its two jaws,which is also the key technology in its design.Based on the analysis of the wood grabs with a mathematical model,the synchronization was optimized by MATLAB and the configuration size and dimensional relationships of the key components were determined,which improved and simplified the synchronous capability and design process,respectively.In the course of optimization,it was found that it＇s impossible to achieve a theoretically complete synchronization for a counter four links structure,but the best synchronization in a certain operating range could be obtained by reasonably choosing the key components＇ reference configuration.

关 键 词：木材抓具 同步性 优化设计 

分 类 号：TH122[机械工程—机械设计及理论]