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Title:
ECCENTRICITY CHECKING METHOD FOR WORK LENS IN CENTERING MACHINE AND DEVICE THEREOF
Document Type and Number:
Japanese Patent JPS6389256
Kind Code:
A
Abstract:

PURPOSE: To make easy of a check for eccentricity in a work lens, by holding the work lens in between by a pair of jigs, while filling up a fluid from each fluid hole installed in these jigs and detecting its leakage.

CONSTITUTION: A work lens 4 is held between a pair of jigs 5 and 6. Compressed air passes through and is filed up in each hole installed in these jigs 5 and 6 from a compressed air supply source 7 via cut-off solenoid valve and flow control valves 9 and 10. Pressure of this fill-up air is connected to set pressure variable type pressure switches 11 and 12. These pressure switches 11 and 12 are made so as to close these switches and emit a signal at a time when internal pressure in these jigs 5 and 6 reaches the preset pressure. Therefore, pressure in a pressure regulator 15 of the pressure supply source 7 is set to constant pressure, and when the set pressure in these pressure switches 11 and 12 is adjusted in accord with this constant pressure, a clearance is produced in one side of these jigs 5 and 6 when there is eccentricity in the lens, and since no signal is generated from the pressure switch at a side of the jig, it is recognized to be decentered.


Inventors:
Kawakami, Kazuo
Application Number:
JP1986000233076
Publication Date:
April 20, 1988
Filing Date:
September 30, 1986
Export Citation:
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Assignee:
OLYMPUS OPTICAL CO LTD
International Classes:
B24B9/14; B24B49/08; (IPC1-7): B24B9/14; B24B49/08
Domestic Patent References:
JPS461495A
JPS5329258A
JPS59183347A