Production Planning for Mass Customization in Additive Manufacturing: Build Orientation Determination, 2D Packing and Scheduling
Production Planning for Mass Customization in Additive Manufacturing: Build Orientation Determination, 2D Packing and Scheduling
复制标题
增材制造中大规模定制的生产规划：构建方向确定、2D 包装和调度
DOI：
10.1115/detc2018-85639
复制
发表时间：
2018
期刊：
影响因子：
--
通讯作者：
S. Behdad
中科院分区：
文献类型：
--
作者：
Yosep Oh;Chi Zhou;S. Behdad
增材制造（AM）零件的有效生产规划是工业规模采用AM的关键。本研究针对多台机器同时生产大量不同形状及尺寸的零件，以缩短生产周期为最终目的，提出一种基于敏捷制造的生产计划。所提出的基于AM的生产计划包括三个主要步骤：（1）确定构建方向;（2）在AM机器的有限工作空间内进行零件的2D包装;以及（3）在多个AM机器上调度零件。在决定建造方向时，主要考虑两种策略：（1）以降低部件高度为重点的铺设策略;（2）以减少托盘上的投影面积为目标的立置策略，以减少作业数量。提出了一种求解二维布局与调度问题的启发式算法。一个数值例子进行，以确定哪种政策是更可取的周期时间。结果，随着部件数量的增加，站立策略比铺设策略更优选。在测试3，000个零件的情况下，站立策略的周期时间比铺设策略短约6%。
The efficient production planning of Additively Manufactured (AM) parts is a key point for industry-scale adoption of AM. This study develops an AM-based production plan for the case of manufacturing a significant number of parts with different shapes and sizes by multiple machines with the ultimate purpose of reducing the cycle time. The proposed AM-based production planning includes three main steps: (1) determination of build orientation; (2) 2D packing of parts within the limited workspace of AM machines; and (3) scheduling parts on multiple AM machines. For making decision about build orientation, two main policies are considered: (1) laying policy in which the focus is on reducing the height of parts; and (2) standing policy which aims at minimizing the projection area on the tray to reduce the number of jobs. A heuristic algorithm is suggested to solve 2D packing and scheduling problems. A numerical example is conducted to identify which policy is more preferred in terms of cycle time. As a result, the standing policy is more preferred than the laying policy as the number of parts increases. In the case of testing 3,000 parts, the cycle time of standing policy is about 6% shorter than laying policy.