DEVELOPMENT OF THE COMPACT DIGITIZING UNIT FOR DENTAL CAD/CAM SYSTEM AVAILABLE FOR NETWORK DENTISTRY

开发适用于网络牙科的牙科 CAD/CAM 系统紧凑型数字化单元

• 批准号: 13557170
• 负责人: MIYAZAKI Takashi
• 金额: $ 7.04万
• 依托单位: Showa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2001
• 资助国家: 日本
• 起止时间: 2001 至 2002
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-13557170/
• 关键词: CAD; CAM; Network; Digitizing; CCD Camera; Stone Die

Initially we aimed to develop the system using the separation of a measurement system and a machining system in dental CAD/CAM system. The network data system, especially the data size and the transaction of transmitting time between a conventional laser digitizer and an industrial machining machine was examined. The measured data size of this system was 1.2MB, which had too much futility for network transmission. After these 3 dimensional point data was reconstructed to Spline surface data, we could reduce the data size to an average of 349.9 KB. Although the PHS handy phone system was adopted because of little restriction in an installation, it took about 5 minutes to perform the check on a computer screen after digitizing. We therefore, subsequently developed a speedy and compact digitizing system. We previously developed the system using a point laser displacement meter. This measurement system had to collect every point on the die surface even if the consequently highly precise measurement can be performed. We therefore developed a trial product of compact digitizer using a CCD camera and line laser. As a result, we could reduce the measuring time to fewer 3 minutes, and furthermore whole study model could be measured practically. Since some part of the transformed surface data from 3 dimensional point data were indistinct by the process of the optimization, we will continue to improve the algorithm of this optimization process.

最初，我们的目标是利用牙科CAD/CAM系统中测量系统和加工系统的分离来开发系统。对网络数据系统，特别是传统激光数字化仪与工业加工机之间的数据量和传输时间进行了研究。该系统的实测数据大小为1.2MB，对于网络传输来说太无用了。将这些三维点数据重构为样条曲面数据后，我们可以将数据大小平均减少到349.9 KB。虽然由于安装限制少，所以采用了PHS掌上电话系统，但在数字化后，在电脑屏幕上进行检查大约需要5分钟。因此，我们随后开发了一个快速和紧凑的数字化系统。我们之前使用点激光位移计开发了该系统。该测量系统必须收集模具表面上的每个点，即使因此可以进行高度精确的测量。因此，我们开发了一种使用CCD相机和线激光器的紧凑型数字化仪的试验产品。因此，我们可以将测量时间缩短到3分钟以内，并且可以实际测量整个研究模型。由于在优化过程中，三维点数据变换后的部分曲面数据不清晰，我们将继续改进优化过程的算法。

项目成果

Y. Hotta, et al.: "Automatic fabrication of prosthesis using a CAD/CAM process. (Part21) Analysis of Stone Die by New Digitizing System"J J Dent Mater. 22(S41). (2003)

Y. Hotta 等人：“使用 CAD/CAM 流程自动制造假体。（第 21 部分）通过新型数字化系统分析石模”J J Dent Mater。

堀田康弘他: "コンピュータ支援による補綴物の自動製作に関する研究(第20報)"歯科材料・器械. 21・S39. 69 (2002)

Yasuhiro Hotta等人：“利用计算机支持的修复体的自动生产研究（第20次报告）”牙科材料和仪器21・S39（2002年）。

Y. Hotta, et al.: "Automatic fabrication of prosthesis using a CAD/CAM process. (Part 19) Mechanical Property of Newly Used Ceramic Material"J J Dent Mater. 20(S38). 61 (2001)

Y. Hotta 等人：“使用 CAD/CAM 流程自动制造假体。（第 19 部分）新使用的陶瓷材料的机械性能”J J Dent Mater。

Y. Hotta, et al.: "Automatic fabrication of prosthesis using a CAD/CAM process. (Part 20) Newly Developed Digitizing System Using a CCD Camera"J J Dent Mater. 21(S39). 69 (2002)

Y. Hotta 等人：“使用 CAD/CAM 流程自动制造假体。（第 20 部分）使用 CCD 相机新开发的数字化系统”J J Dent Mater。

堀田康弘他: "コンピュータ支援による補綴物の自動製作に関する研究(第19報)"歯科材料・器械. 20・S38. 61 (2001)

Yasuhiro Hotta等人：“利用计算机支持的假肢自动生产的研究（第19次报告）”牙科材料和仪器20・S38（2001）。