A bi-axial active boring tool for chatter mitigation
This paper summarizes results of metal cutting tests using an actively damped boring bar to suppress regenerative chatter. PZT stack actuators were integrated into a commercially available two-inch diameter boring bar to suppress bending vibrations. Since the modified tool requires no specialized mounting hardware, it can be readily mounted on a variety of machines. A cutting test using the prototype bar to remove metal from a hardened steel workpiece verifies that the authors actively damped tool yields significant vibration reduction and improved surface finish as compared to the open-loop case. In addition, the overall performance of the prototype bar is compared to that of an unmodified bar of pristine geometry, revealing that a significant enlargement of the stable machining envelope is obtained through application of feedback control.
- Research Organization:
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC04-94AL85000
- OSTI ID:
- 674594
- Report Number(s):
- SAND-98-1682C; CONF-981107-; ON: DE98007190; BR: DP0102011; TRN: AHC29820%%46
- Resource Relation:
- Conference: 1998 international mechanical engineering congress and exposition, Anaheim, CA (United States), 15-20 Nov 1998; Other Information: PBD: [1998]
- Country of Publication:
- United States
- Language:
- English
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