文档介绍：摘要
3D 打印技术是快速成型技术的一种,根据成形材料及打印加工过程的不同又可分为不
同类型的技术,例如选择性激光烧结(SLS,selective laser sintering)、立体平版印刷 SLA
(Stereolithography)、叠层制造法 LOM(Laminated Object Manufacturing)、熔丝沉积制造技
术(FDM,fused deposition modeling)等,每种技术都有自身的优缺点。如何提高打印的速
度和精度是当今 3D 打印技术研究的主要问题。
本文详细阐述了 3D 打印的关键技术,针对 3D 打印中对文件切片处理过程耗时,占用存
储空间大等缺陷问题,分析分层处理的过程和切片文件(STL 文件)单元三角形面之间的关系,
利用其三角形面片之间的拓扑结构和三角形面片自身的连续性,给出了一种新的切片算法
(基于 Z 坐标分层算法),意在减少分层过程的时间及内存占用量,提高分层轮廓信息的可靠
性。
设计了 3D 打印的硬件电路,控制系统选择意法半导体公司的 STM32F103 作为核心处
理器,利用其高速的数据处理能力和芯片内部集成丰富的外设接口资源,通过串口通信接口
为 3D 打印系统提供了一个功能强大并具有一定扩展性的硬件平台,选用步进电机细分控制
驱动芯片 A3979 控制 X、Y、Z 三轴运转,理论分析将抖动算法应用到 3D 打印中,力求在
成本合理、结构简单、功能完善的基础上尽量提高 3D 打印的效率和打印输出的精度。
关键词:3D 打印;FDM;切片算法;驱动控制
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ABSTRACT
3D printing technology is a type of rapid prototyping technology,and according to the
different forming material and printing process, it can be divided into different types of
technology, such as selective laser sintering,Stereolithography,Laminated Object
Manufacturing,fused deposition modeling, each technology has its own strengths
and ,how to improve the printing speed and accuracy are main
issues of 3D printing technology research.
In this paper, it elaborated on the key technology of 3D to solve the
problems of time consuming and taking up the large storage space for file slicing in 3D
printing process,A new slicing algorithm was given, that is Z-coordinate-based hierarchical
algorithm, which use the topological structure information and the continuity of the
triangulars, analysing the process of the layered and the relationship among unit triangles
of sliced files (STL file).This algorithm not only can save time and memory space of the
layered process effectively, but also improve the reliability of the layered profile
information.
It designs a hardware circuit of 3D printing which the Control system
choose STM32F103 Micro-controller that from pany as its core
processor. It