Contour Crafting: A Novel Rapid Prototyping Technique

轮廓制作：一种新颖的快速原型技术

• 批准号: 9634962
• 负责人: Behrokh Khoshnevis
• 金额: $ 27.19万
• 依托单位: University of Southern California
• 依托单位国家: 美国
• 项目类别: Continuing Grant
• 财政年份: 1997
• 资助国家: 美国
• 起止时间: 1997-03-01 至 2001-02-28
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9634962&HistoricalAwards=false
• 关键词: Contour; Crafting; Novel; Rapid; Prototyping

Khoshnevis 9634962 As an emerging technology, rapid prototyping is revolutionizing every sector of industry, creating great opportunities to design and manufacture products of superior quality with shorter lead-time and low costs. Methods like selective photocuring, selective sintering, droplet deposition on powder,and 3D printing have been explored by many researchers and practitioners. The major technological constraints for using the rapid prototyping technologies are poor surface finishing, limited size, and dimensional shrinkage of parts. There is a strong need for fabricating large parts, superior surface quality, and better mechanical properties. The proposed research project will develop a Contour Crafting (CC) rapid prototyping system, a new additive fabrication technology, which can produce extremely smooth surface finishing. The Contour Crafting process uses computer control of troweling motion of a forming mechanism to create smooth and accurate planar and free-form surfaces. This is a hybrid method that combines an extrusion process for forming the object surfaces and a filling process to build the object core. The research project has a balance between theory and experiment, and will provide valuable findings for the rapid prototyping industry.

Khoshnevis 9634962作为一项新兴技术，快速成型技术正在彻底改变工业的各个领域，为设计和制造交货期更短、成本更低的高质量产品创造了巨大的机遇。选择性光固化、选择性烧结、粉末液滴沉积和3D打印等方法已经被许多研究人员和从业者探索过。制约快速成型技术应用的主要技术因素是零件的表面光洁度差、尺寸受限和尺寸收缩。人们迫切需要制造更大的零件、更好的表面质量和更好的机械性能。拟议的研究项目将开发一种轮廓加工(CC)快速原型系统，这是一种新的添加剂制造技术，可以产生极其光滑的表面抛光。轮廓加工过程使用计算机控制成型机构的铲刀运动，以创建平滑而精确的平面和自由形状表面。这是一种混合方法，它结合了用于形成对象表面的挤压过程和用于构建对象核心的填充过程。该研究项目在理论和实验之间取得了平衡，将为快速成型行业提供有价值的研究成果。