Modeling and optimization of profile creep-feed grinding with cubic boron nitride

立方氮化硼仿形缓进给磨削的建模和优化

• 批准号: 217203-2008
• 负责人: Warkentin, Andrew
• 金额: $ 1.46万
• 依托单位: Dalhousie University
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2011
• 资助国家: 加拿大
• 起止时间: 2011-01-01 至 2012-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=477938
• 关键词: Modeling; optimization; profile; creep; feed

Grinding is one of the most critical and costly manufacturing processes accounting for approximately 20% of the total machining expenditures in industrialized countries. Profile creep-feed grinding is essential to a wide range of applications including gas, turbines, cardan shafts and driving elements such as gears. Originally, this process was carried out with aluminum oxide (Al2O3); however, a relatively new alternative being used in Europe and Japan is Cubic Boron Nitride (CBN). CBN is a man-made material that is more than twice as hard as aluminum oxide and has excellent thermal conductivity. As a result, it does not require continuous dressing (to maintain wheel sharpness) and tends to cut at lower temperatures resulting in increased productivity and improved part quality. Canadian companies, however, have been reluctant to adopt this technology partly due to a lack of regional expertise. Furthermore, many Canadian aerospace companies find it difficult to compete simply because of the scarcity of skilled people. To maintain global competitiveness in aerospace manufacturing, Canadian expertise in grinding theory and technology is required.

磨削是最关键、成本最高的制造工艺之一，约占工业化国家机械加工总支出的 20%。 仿形缓进给磨削对于多种应用至关重要，包括燃气、涡轮机、万向轴和齿轮等驱动元件。 最初，这个过程是用氧化铝（Al2O3）进行的；然而，欧洲和日本使用的一种相对较新的替代品是立方氮化硼 (CBN)。 CBN是一种人造材料，其硬度是氧化铝的两倍以上，并且具有优异的导热性。 因此，它不需要连续修整（以保持砂轮锋利度），并且往往在较低温度下进行切削，从而提高生产率和零件质量。 然而，加拿大公司一直不愿采用这项技术，部分原因是缺乏区域专业知识。 此外，许多加拿大航空航天公司发现，由于缺乏技术人才而难以参与竞争。 为了保持航空航天制造的全球竞争力，需要加拿大在磨削理论和技术方面的专业知识。