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: 2009
• 资助国家: 加拿大
• 起止时间: 2009-01-01 至 2010-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=424830
• 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.

磨削是工业化国家总加工支出的20％的最关键和昂贵的制造过程之一。 轮廓蠕变喂食对于包括气体，涡轮机，卡丹轴和驾驶元件（例如齿轮）在内的广泛应用至关重要。 最初，该过程是用氧化铝（AL2O3）进行的。但是，在欧洲和日本使用的一种相对较新的替代品是氮化物立方硼（CBN）。 CBN是一种人为的材料，其硬氧化铝的两倍以上，并且具有出色的导热率。 结果，它不需要连续的敷料（以保持车轮清晰度），并且倾向于在较低的温度下切割，从而提高生产率和提高零件质量。 但是，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，仅仅因为熟练人士的稀缺而很难竞争。 为了维持航空航天制造业的全球竞争力，需要加拿大的磨削理论和技术专业知识。