Three-dimensional milling method for artifical bone

人工骨三维铣削方法

• 批准号: 05671684
• 负责人: AKIZUKI Hiromichi
• 金额: $ 1.47万
• 依托单位: Showa University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for General Scientific Research (C)
• 财政年份: 1993
• 资助国家: 日本
• 起止时间: 1993 至 1995
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/en/grant/KAKENHI-PROJECT-05671684/
• 关键词: artificial bone; apatite; titanium; milling method; 3次元切削法; 顎骨補填材; 顎骨再建; 下顎骨再建; 三次元的切削

Hydroxyapatite block and titanium block were formed by three-dimensional milling machine from information of computer tomography. The ability of this method was investigated.Method : CAD-forming data was made using soft wawe (CATIVA Solution V4) and IBM RS-60000. Then the forming process of rough and finish cutting was planed. Because of apatite block is fragile and makes much refuse powder, cutting machine was demanded durability for these obstacles. High speed NC cutting machine was used for milling apatite.Result :Processing condition ; revolutions per minute of the main axis of rotation is 40000rpm and processing speed is 3000m/min in rough cutting and in 16-3000 m/min. Processing time was 24-195 min.Accuracy of forming ; The original model and milling model ware measured on 5 points that were typical form by the calibration system. The accuracy rates (original model : milling model) were 35.7 : 34.6 at a-point, 29.2 : 29.2 at b-point, 25.7 : 26.4 at c-point, 15.5 : 15.7 at d-point and 15.5 : 15.0 at e-point. The accuracy of this forming is seemed to be enough to appreciate to our clinic.

根据计算机断层扫描信息，通过三维铣床成型羟基磷灰石块和钛块。研究了该方法的能力。方法：使用软件wawe(CATIVA Solution V4)和IBM RS-60000制作CAD形成数据。然后对粗、精切削的成形工艺进行了刨削。由于磷灰石块易碎，产生的垃圾粉较多，因此对切割机的耐用性提出了更高的要求。采用高速数控切割机铣削磷灰石。结果：加工条件；主轴转速每分钟40000rpm，粗切削时加工速度为3000m/min，加工速度为16-3000m/min。加工时间24-195分钟。成型精度；校准系统对原始模型和铣削模型进行了 5 个典型形状点的测量。准确率（原始模型：铣削模型）a 点为 35.7 : 34.6，b 点为 29.2 : 29.2，c 点为 25.7 : 26.4，d 点为 15.5 : 15.7，e 点为 15.5 : 15.0 。这种成型的准确性似乎足以让我们的诊所赞赏。