Developments for High Performance Machine Tool Spindles

✍ Scribed by C. Brecher; G. Spachtholz; F. Paepenmüller

• Publisher: International Academy for Production Engineering
• Year: 2007
• Tongue: English
• Weight: 748 KB
• Volume: 56
• Category: Article
• ISSN: 0007-8506
• DOI: 10.1016/j.cirp.2007.05.092

✦ Synopsis

One important demand on spindle systems in modern machine tools is to realise higher rotational speeds in order to increase the machining efficiency. Additionally, for a given speed range a better robustness is demanded so that the spindle system is desensitised against improper operating conditions. The paper presents research results in various fields which contribute to the improvement of spindle-bearing systems. At first, new results for alternative spindle bearing kinematics with four contact points are presented. Secondly, a new solution for floating bearing arrangements is discussed. A modified cylindrical roller bearing is presented which can be operated at higher speeds. Finally, the potential of coated bearing components is discussed in the context of improved fail-safe properties. In this paper both analytic studies and experimental tests are presented.