铰链式带锯床锯架结构分析与优化  

Structure analysis and optimization of the saw frame of the hinged band sawing machine

作　　者：邢士龙 乔健 刘杰[1] 徐宝卫 秦升学[1] XING Shilong;QIAO Jian;LIU Jie;XU Baowei;QIN Shengxue(School of Mechanical and Electronic Engineering,Shandong University of Science and Technology,Qingdao 266590,China;Tengzhou TRI-UNION Machinery Co.,Ltd.,Tengzhou 277500,China)

机构地区：[1]山东科技大学机械电子工程学院,青岛266590 [2]滕州市三合机械股份有限公司,滕州277500

出　　处：《现代制造工程》2023年第8期87-91,6,共6页Modern Manufacturing Engineering

基　　金：山东省自然科学基金项目(ZR2021ME234)。

摘　　要：采用有限元方法对某型号铰链式带锯床锯架结构的静态特性进行了模拟分析,分别获得了张紧状态和锯切状态下锯架的应力应变分布规律,分析了锯架的变形情况,发现该锯架在从动轮侧存在应力集中现象,最大应力为159.02 MPa,超过了材料的许用应力。设计并进行了检测试验,根据数值模拟结果在锯架表面选择了8处测点,测试结果与数值模拟结果吻合较好,最大误差不超过10%,验证了有限元模拟结果的准确性。以模拟结果为依据对应力集中部位进行形状优化,优化后锯架的最大应力减小到59.11 MPa,安全系数达到4.2,符合高可靠性设计要求。结果表明,该优化方法对带锯床锯架的设计和优化具有指导意义。The static characteristics of the saw frame of a certain type of hinge band sawing machine were simulated and analyzed by using the finite element method,the stress-strain distribution laws of the saw frame under tensioning and sawing conditions were obtained respectively,the deformation of the saw frame was analyzed and it was found that there was stress concentration phenomenon existing in the side of the driven wheel.The maximum stress was 159.02 MPa,which exceeded the allowable stress of the material.The testing experiment was designed and carried out,and eight measurement points were selected on the surface of the saw frame according to the numerical simulation results,and the test results were in good agreement with the numerical simulation results,with the highest error not exceeding 10%,which verified the accuracy of the finite element simulation results.The simulation results were also used as the basis for shape optimization of the stress concentration areas,and the maximum stress of the saw frame was reduced to 59.11 MPa after optimization,with a safety factor of 4.2,which meets the requirements of high reliability design.The results show that the optimization method is of guidance for the design and optimization of band sawing machine frames.

关 键 词：带锯床 有限元分析 强度分析 应变检测 结构优化 

分 类 号：TG561[金属学及工艺—金属切削加工及机床]