US Patent: 3,516,328
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| Machine Tool With Longitudinally Adjustable and Hydraulically Clamped Rotary Machining Spindle
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Patentees:
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| Gordon H. Jones (exact or similar names) - Van Dyne, 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: |
Jul. 12, 1968 |
| Granted: |
Jun. 23, 1970 |
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Joel Havens
"Vintage Machinery" entry for Giddings & Lewis Manufacturing Co.
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Description: |
| Abstract:
A machine tool comprising a machining spindle adjustably extensible longitudinally within a rotary support sleeve and releasably clamped to the sleeve by a clamping bushing applied by high pressure hydraulic energizing means positioned on the spindle sleeve in such manner that application of the clamping bushing does not change the load on precision bearing means used to support and precisely locate the sleeve radially and axially and does not apply significant axial stress to the structure that functions to determine the axial position of the spindle to the end that the spindle is clamped for rotation precisely in the exact axial position desired. The clamping bushing has an axial position proximate a precision bearing that locates the sleeve and spindle axially with precision and the high fluid pressure clamp energizing structure that rotates with the sleeve and energizes the clamp hydraulically is situated on the sleeve so that the portion of the sleeve that determines axially location of the spindle is effectively isolated from significant axial stresses incident to clamping of the spindle. High pressure clamp energizing means rotatable with the sleeve is energized by fluid under relatively low pressure fed to the rotary sleeve assembly by a fluid supply collar which permits high speed rotation of the sleeve without wear or deterioration of the structure. |
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