Abstract
This paper deals with the detailed development of an ultraprecision lathe for the purpose of machining magnetic disks. The rotational and feed accuracy and stiffness of the air bearing and the air slide were tested, respectively. A microcutting device using a piezoelectric material was also developed in order to maintain a uniform and precise depth of cut. Experiments machining a magnetic disk were carried out.
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Abbreviations
- A [m2]:
-
Area of piezoelectric actuator
- C o [mF]:
-
Capacitance of PZT
- d 33 [m V−1]:
-
Piezoelectric constant
- K f [N V−1]:
-
Equivalent force constant
- K m [N m−1]:
-
Coefficient of force feedback
- k h [N m−1]:
-
Stiffness of hinge
- l [m]:
-
Length of PZT
- M [kg]:
-
Mass of PZT system
- r [mm]:
-
Radius of notch
- U [m]:
-
Displacement of piezoelectric
- ɛ3 [F m−1]:
-
Dielectric constant of PZT
- b [mm]:
-
Width of hinge
- D e [N s−1]:
-
Equivalent damping coefficient
- F l [N]:
-
External load
- K e [N m−1]:
-
Equivalent stiffness of PZT
- k [m2 N−1]:
-
Elastic compliance of PZT
- L [mm]:
-
Distance between hinge holes
- M e [kg]:
-
Equivalent mass of PZT
- R o [W]:
-
Output impedance of amp.
- t [mm]:
-
Thickness between hinge holes
- V i [V]:
-
Input voltage
- ρ [g cm−3]:
-
Density of PZT
References
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Kim, JD., Kim, DS. Development and application of an ultra-precision lathe. Int J Adv Manuf Technol 13, 164–171 (1997). https://doi.org/10.1007/BF01305868
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DOI: https://doi.org/10.1007/BF01305868