US Patent: 3,521,526
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| Method and Apparatus for Positional Control Compensation for Temperature Changes in Machine Tool Spindles
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Patentees:
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| Eugene A. Olig (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI |
| Steven E. Klabunde (exact or similar names) - Fond Du Lac, Fond Du Lac County, WI |
| Manufacturer: |
| Not known to have been produced |
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Patent Dates:
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| Applied: |
Nov. 18, 1968 |
| Granted: |
Jul. 21, 1970 |
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Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
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Description: |
| Abstract:
A positional control compensation system and method of operation are disclosed in which a coolant is circulated between a reservoir and the bearings of a translatable machine tool spindle from which the returning fluid passes through a heat exchanger. The heat exchanger is separated from an insulated heat sink by a thermal delay path of adjustable length so that a thermistor in the heat sink senses a temperature which is at all times analogous to the actual internal spindle temperature. Circuit means is provided to generate a temperature-responsive error signal which applies the compensating positional correction to the spindle through a servomotor. |
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