设计简介
选择性激光烧结铺粉装置设计
摘要：近年来，集中先进的激光技术，粉体技术和计算机控制技术的选择性激光烧结（Selective Laser Sintering,简称SLS)工艺日渐成熟，SLS无需模具就可将金属和非金属粉末直接逐层烧结成近净形致密零件，具有成形灵活性强，周期短，原料广泛等特点，在汽车，造船，机械，航空与航天等诸多领域逐渐得到广泛应用，成为当前成形技术中的一个研究热点和几句发展潜力的前沿技术。为了分析铺粉精度对选择性激光烧结成型质量的影响，设计一种新型的铺粉装置。介绍该铺粉装置的工作原理，结构组成，设计要点。
关键词：选择性激光烧结；粉末；快速成形；铺粉装置；铺粉精度
Design of Spreading Powder Device of Selective Laser Sintering Rapid Prototyping Machine摘要：近年来，集中先进的激光技术，粉体技术和计算机控制技术的选择性激光烧结（Selective Laser Sintering,简称SLS)工艺日渐成熟，SLS无需模具就可将金属和非金属粉末直接逐层烧结成近净形致密零件，具有成形灵活性强，周期短，原料广泛等特点，在汽车，造船，机械，航空与航天等诸多领域逐渐得到广泛应用，成为当前成形技术中的一个研究热点和几句发展潜力的前沿技术。为了分析铺粉精度对选择性激光烧结成型质量的影响，设计一种新型的铺粉装置。介绍该铺粉装置的工作原理，结构组成，设计要点。
关键词：选择性激光烧结；粉末；快速成形；铺粉装置；铺粉精度
Abstract: Slective Laser sintering(SLS),integrated the technologies of laser,powder and computer-aided design become more and more mature in the past ten years. The SLS can be used to sinter metal and nonmetal powders directly into full-densified and near-net shaped products.Because of having the merits of good flexibility,short production periods broad raw materials and so on,the SLS is now widely applied in many fields,such as automobile,shipbuilding, spacefight and aviation industry,and is considered as the technology in advance position.Precision of powder-laying is an important factor affecting selective laser sintering forming quality.A new kind of spreading powder device was designed.The working principles,structure constitution and design points were intrduced.
Keywords:Selective laser sintering; powder; rapid shaping; spreading powder device; accuracy of powder-laying
目录
中文摘要································································3
Abstract·································································4
1绪论···································································5
1.1课题来源···························································5
1.2研究目的和意义·····················································6
1.3选择性激光烧结概述·················································7
1.4 SLS技术的发展历程和现状···········································9
1.5 SLS铺粉装置的目前现状············································10
1.6本章小结··························································12
2选择性激光烧结的铺粉装置的设计·······························13
2.1铺粉装置的总体设计················································13
2.2铺粉装置的第一种方案··············································13
2.3铺粉装置的第二种方案··············································15
2.4方案的比较及最终选择··············································16
2.5设计方案的设计要求················································16
2.6本章小结··························································17
3 铺粉装置的结构设计··········································18
3.1主机······························································18
3.2成型工作缸························································18
3.3丝杠设计··························································18
3.4 齿轮的设计························································27
3.5步进电机设计······················································31
3.6废料回收缸························································33
3.7铺粉滚筒装置······················································33
3.8送料工作缸························································34
3.9激光器····························································34
3.10振镜式动态聚焦扫描系统···········································34
3.11机身与机壳·······················································36
4 总结························································37
5 致谢························································38
6 参考文献····················································39
Abstract·································································4
1绪论···································································5
1.1课题来源···························································5
1.2研究目的和意义·····················································6
1.3选择性激光烧结概述·················································7
1.4 SLS技术的发展历程和现状···········································9
1.5 SLS铺粉装置的目前现状············································10
1.6本章小结··························································12
2选择性激光烧结的铺粉装置的设计·······························13
2.1铺粉装置的总体设计················································13
2.2铺粉装置的第一种方案··············································13
2.3铺粉装置的第二种方案··············································15
2.4方案的比较及最终选择··············································16
2.5设计方案的设计要求················································16
2.6本章小结··························································17
3 铺粉装置的结构设计··········································18
3.1主机······························································18
3.2成型工作缸························································18
3.3丝杠设计··························································18
3.4 齿轮的设计························································27
3.5步进电机设计······················································31
3.6废料回收缸························································33
3.7铺粉滚筒装置······················································33
3.8送料工作缸························································34
3.9激光器····························································34
3.10振镜式动态聚焦扫描系统···········································34
3.11机身与机壳·······················································36
4 总结························································37
5 致谢························································38
6 参考文献····················································39
