基于SLM技术的悬架装置横臂快速试制工艺方法的研究  

Research on the Rapid Trial Production Process of Suspension Arm Based on SLM Technology

作　　者：赵孟颖 卫鹏翼 吕志鸿[1] 王巍 赵松[1] 刘博 ZHAO Mengying;WEI Pengyi;LV Zhihong;WANG Wei;ZHAO Song;LIU Bo(Process Trial Production Department,China North Vehicle Research Institute,Beijing 100072,China)

机构地区：[1]中国北方车辆研究所工艺试制部,北京100072

出　　处：《车辆与动力技术》2024年第4期52-56,62,共6页Vehicle & Power Technology

摘　　要：选区激光熔化技术(Selective Laser Melting,简称SLM)是一种用于金属增材制造的技术,它利用激光逐层对特定区域的金属粉末进行烧结熔化,后经急速冷却凝固成形,不断累积最终得到目标产品.SLM技术在小批量复杂构件的成形制造上具有极大优势.本文围绕悬架装置横臂的快速试制为目标,分析了多向异形复杂结构件在SLM成形中的特点与问题,建立了传力结构模型.根据悬架装置的逻辑功能和横臂本身约束条件,提出了横臂变密度点阵填充和一体化增材制造的再优化方法,在成型试验中,可以实现将近54%的减重,机械强度的设计冗余增加8.1%,充分验证了本工艺方法的可行性,初步显示增材制造悬架装置横臂在快速试制和轻量化改善上的潜力.Selective Laser Melting(SLM)is a technology used in the manufacturing of metal additives.It uses laser to sinter and melt metal powders in specific areas layer by layer,and then rapidly cools and solidifies to form,continuously accumulating to obtain the target product.SLM technology has great advantages in the forming and manufacturing of small batches of complex components.This article focuses on the rapid trial production of suspension device cross arms,analyzes the characteristics and problems of multi-directional irregular complex structural components in SLM forming,and establishes a force transmission structure model.Based on the logical functions of the suspension device and the constraints of the cross arm itself,a re optimization method for cross arm variable density lattice filling and integrated additive manufacturing is proposed.In the forming test,nearly 54%weight reduction can be achieved,and the design redundancy of mechanical strength can be increased by 8.1%.This fully verifies the feasibility of this process method,and preliminarily shows the potential of additive manufacturing suspension device cross arms in rapid trial production and lightweight improvement.

关 键 词：横臂 快速试制 选区激光熔化技术 

分 类 号：U463.33[机械工程—车辆工程]