Boring bar with removable and indexable cutting insert
AssigneeIllinois Tool Works Inc.
InventorArne R. Jorgensen
Life of this patent
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Abstract
A boring bar having a removable indexable cutting insert with a plurality of cutting edges is disclosed. The cutting insert is held in place in the bar by a locking finger on an insert clamp which is locked into place by a ball which is wedged against a release pin that engages the clamp. The ball may be moved so as to allow the pin to move, thereby releasing the force applied by the clamp whenever the insert is to be indexed or whenever a replacement of the insert is required. This is achieved by either manual or hydraulic control of a wedge shaft that engages the ball.
Claims4
A device for holding and automatically indexing a removable cutting insert comprising a plurality of cutting sections which are selectively indexable so as to successively contact the surface of a work piece being machined comprising a tool block for receiving said insert, clamp means for exerting holding pressure on said insert to hold said insert in place in said block, force means for selectively applying and removing force on said clamp means, indexing means for indexing said cutting insert comprising engagement means for engaging said cutting insert in order to rotate said cutting insert through a predetermined angle, operating means for selectively operating said force means in order to apply or release said force on said clamp means and control means coupled to said operating means and to said indexing means and synchronized with said operating means which operates said indexing means so that said indexing means automatically acts to rotate said cutting insert only subsequent to the release of said force on said clamp means by said force means.
Dependencies are inferred from the claim text.