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US Patent: 4,084,462
Clamping Means for a Tool Block in the Vertical Boring Machine or the Like
Claude M. Grinage - Stratford, Fairfield County, CT

USPTO Classifications:
409/203, 82/158

Tool Categories:
metalworking machines : metalworking machine mechanisms
metalworking machines : metal lathes : vertical turret lathes

Bullard Co. - Bridgeport, Fairfield County, CT

Not known to have been produced


Patent Dates:
Applied: Sep. 02, 1975
Granted: Apr. 18, 1978

Patent Pictures:
USPTO pdf tiff
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"Vintage Machinery" entry for Bullard Machine Tool Co.

In a tool change system for a vertical lathe or the like, a new and improved arrangement for clamping a tool block in a tool supporting ram. The new clamping means provides a firm support for the tool block and further includes means for equalizing the clamping forces applied to the tool block and for properly positioning and orienting the tool block in the ram. In accordance with a specific feature of the present invention, the tool block is provided with clamp engaging means on opposite sides thereof and the clamping means comprises a pair of spaced clamping bars engageable with the respective clamping means on the tool block. A common actuating means is operative to move the clamping bars into a tight clamping relation with the clamping means of the tool block. Means are provided for effectively distributing the clamping force applied by the actuating means which comprise a first connecting means for yieldably interconnecting the actuating means to one of the clamping bars and a second connecting means for non-yieldably interconnecting the actuating means to the other of the clamping bars. The non-yieldable second connecting means is arranged on the side of the tool block from which the work approaches.

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