Research and Development of An Inspection and Dynamic Balancing System for Miniature High-speed Turbine Cartridge
Date Issued
2011
Date
2011
Author(s)
Tang, Tzu-Chien
Abstract
The aim of this thesis is to design and develop an inspection and dynamic balancing system for handling miniature high-speed turbine cartridges of dental headpieces. According to the balancing requirement and the cartridge form, the functional and the embodiment layout for the inspection and dynamic balancing system are carried out. It also integrates with self-developed hard- and soft-wares for system control. The to be tested cartridge is clamped by two elastic supporting racks, and the unbalance vibration induced by rotating cartridge causes their deformations, which are measured by the attached strain gauges. Through measurement of vibration, angular displacement and speed, the unbalance distribution of the cartridge on two measurement planes located on the two elastic supporting racks can be derived. The balancing process is accomplished by the balancing algorithmic operation and unbalance removing operation. Besides the dynamic balancing operation, the system can also be used for detecting the performance of rotating cartridge and its assembly and part qualities. Through the dynamic balancing operation, the rotating quality of high-speed cartridge can be over 60 % improved. Our developed inspection and dynamic balancing system can achieve the ISO G16 balancing level for 400 krpm rotating cartridge. Based on the analytical and experimental results, influential factors and manners for measurement and balancing accuracies are derived, which arouse our improvement strategy.
Subjects
Dental headpiece
Air turbine
Dynamic balancing
Vibration measurement
Less loading effect
Micro cutting
Type
thesis
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