| 摘要 |
PURPOSE: A high accuracy centripetal grinder is provided to grind the lens precisely by sliding up and down with turning a tool, transferring a grinder head part accurately with an LM guide and an upper slide and using a precision gauge, and to work conveniently by enlarging the work area with reducing the size of the spindle driving unit and the length of the spindle shaft. CONSTITUTION: To tilt a lower tool placing a lens in a lens grinder, a motor generating driving force is installed in the rear part of a plate(434) vertically moving by receiving driving force. A cam base(436) is mounted in a driving shaft(438) of the motor, and an eccentric shaft(442) is inserted to the center of the cam base. An adjusting screw(432) is combined with the eccentric shaft to adjust the eccentric angle, and a crankshaft(444) is installed in the other end of the eccentric shaft to tilt the lower tool according to the predetermined eccentric angle.
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