移动制造FDM机运动状态及黏结面应力分析  

The Analysis of Motion State and Contact Stress of FDM Molding Machine

作　　者：胡琴[1] 王长新[1] 万长成[1] 梅毅[1] 王辰[1] 

机构地区：[1]西南石油大学机电工程学院,四川成都610500

出　　处：《塑料工业》2017年第5期52-55,86,共5页China Plastics Industry

摘　　要：移动制造中心为配置3D打印机的卡车,其中的熔融沉积成型(FDM)机运动状态非常复杂,这会影响FDM成型机的成型成功率。为此,分析了FDM成型机的运动状态,主要有水平方向的加速与减速状态、竖直方向的超重与失重状态、水平旋转状态、纵向与横向翻转状态、振动状态等。用WORKBENCH软件进行了不同运动状态下的应力仿真分析,分析得出,在不考虑振动时,零件与热床的黏结面的应力主要受水平加速运动状态的影响,且最大应力主要出现在零件与热床黏结面的边缘部分。在失重状态及超重状态下,黏结面的应力均较小,其最大应力主要分布在黏结面的边缘部分。在考虑振动的运动状态下,零件与热床黏结面的最大主应力及最大剪应力显著增大。The mobile manufacture center is the truck with a 3D printer, and the fused deposition modeling （FDM） molding machine＇s motion state is very complex, which would affect the success rate of FDM molding machine in molding. To this end, the FDM molding machine＇s motion state was analyzed, mainly including the horizontal acceleration and deceleration condition, the overweight and weightlessness in the vertical direction, the horizontal rotating state, the longitudinal and transverse rollover state, vibration. Carry out the stress simulation analysis using Workbench software under the state of the regardless of the vibration state of motion. The results show that the stress of the contact surface between parts and hot bed is mainly affected by the horizontal acceleration motion, and the maximum stress mainly appears in the edge of the parts and hot bed interface section. In the condition of weightlessness and overweight, the contact stress is smaller, and the maximum stress mainly distributes in the edge of the contact surface. When loading the vibration, the maximum principle stress and the maximum shear stress increase remarkably.

关 键 词：移动制造 熔融沉积成型 运动状态 加速度 振动 应力 

分 类 号：TP334.8[自动化与计算机技术—计算机系统结构]