Test and Evaluation of Stiffness of a Pin Turning Device for Large Marine Engine Crankshafts

• 作者: D. H. Kim G. B. Ha H. S. An Y. H. Choi
• 来源期刊: 电力能源(英文)
• 学科: 医学
• 关键词: PIN TURNING Device (PTD) Machine Tool STIFFNESS COMPLIANCE Response Function Impact HAMMER Test
• 年，卷（期）: 2013,（7）
• 页码范围: 14-19
• 页数: 6页
• 分类号: R73

摘要

In order to prevent unwanted excited vibrations and to secure better machining precision in large size heavy duty machine tools dynamic stiffness is one of the most desirable and critical properties. In the past decades, many researches on machine tool stiffness test and evaluation methodology have been made. However any methodology for a Pin Turning Device (PTD), which is a special kind of turning lathe for machining big size crankshaft pins, is rarely found among them. This study proposes a test and evaluation process of stiffness of a PTD by measuring frequency response function at the tool center point (TCP). For conformance proving for the proposed methodology, stiffness of a PTD obtained by the proposed method with impact hammer test (IHT) has been compared with that determined by FEM.