This study makes a simple model of ball grinder to simulate the dynamics of grinding process. This theoretical analysis of the dynamic characteristics can be used to explain the phenomenon of the Kato¡¦s experiment and it hopes to a useful tool for the design of the ball grinder.
The high removal rate is obtained with magnetic fluid grinding when high sliding velocity occurs between the ball and a high rotating drive shaft. When the balls circulation rate breaks away from the shaft speed can be used to predict the onset of skidding. Since the maximum driving friction force is proportional to contact normal force and frictional coefficient, the skidding occurs at the smaller normal force and frictional coefficient. The high viscosity of fluid, the larger fluid drag force is, when overcome the driving force then the skidding occurs.
The magnetic gradient is steeper when the width of magnet of the bed is thinner, the effects of supporting stiffness of the floating pad is higher. When the magnetic buoyant force of the ball is larger, the contact normal force is larger, then the removal rate is higher.
| Identifer | oai:union.ndltd.org:NSYSU/oai:NSYSU:etd-0718100-205242 |
| Date | 18 July 2000 |
| Creators | Chen, Ming-Chang |
| Contributors | Yuang-Cherng Chiou, Rong-Tsong Lee, Jinn-An Shieh |
| Publisher | NSYSU |
| Source Sets | NSYSU Electronic Thesis and Dissertation Archive |
| Language | Cholon |
| Detected Language | English |
| Type | text |
| Format | application/pdf |
| Source | http://etd.lib.nsysu.edu.tw/ETD-db/ETD-search/view_etd?URN=etd-0718100-205242 |
| Rights | unrestricted, Copyright information available at source archive |
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