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US 12,649,189 B2Granted
Clamping assembly for a toolholder assembly
AssigneeKennametal Inc.
InventorsAlan J. Bookheimer, Austin Baer, Logan Semnisky
Life of this patent
Estimating the term…
Abstract
A clamping assembly includes a base member having an internal bore, a lock rod within the internal bore of the base member and moveable between an unlocked position and a locked position, the lock rod including a lock rod cam surface and a first bearing, a crank wheel having an axis of rotation and a third bearing, and a linkage including a second bearing comprising an elongated cavity formed in an outer surface, a fourth bearing and a cam surface at one end thereof.
Claims17
A clamping assembly, comprising:
- a base member having an internal bore;
- a lock rod within the internal bore of the base member and moveable between an unlocked position and a locked position, the lock rod including a lock rod cam surface and a first bearing, the lock rod cam surface formed with a radius;
- a crank wheel having an axis of rotation and a third bearing;
- and
- a linkage including a second bearing comprising an elongated cavity formed in an outer wall facing the lock rod, a fourth bearing, and a cam surface at one end thereof, the cam surface formed with a radius that is substantially identical to the radius of the lock rod cam surface to reduce Hertzian contact stress,
- wherein the linkage is rotationally and translationally coupled to the lock rod by a first pin joint comprising a first pin received within the first bearing of the lock rod and at least partially received within the second bearing of the linkage,
- wherein the linkage is rotationally coupled to the crank wheel by a second pin joint comprising a second pin received with the third bearing of the crank wheel and within the fourth bearing of the linkage,
- wherein rotation of the crank wheel in a first direction causes the cam surface of the linkage to engage the lock rod cam surface to place the lock rod in the unlocked position, and
- wherein rotation of the crank wheel in a second direction opposite to the first direction causes the first pin to engage the second bearing of the linkage to place the lock rod in the locked position.
6 more elements
A clamping assembly, comprising:
- a base member having an internal bore;
- a lock rod within the internal bore of the base member and moveable between an unlocked position and a locked position, the lock rod including a lock rod cam surface and a first bearing, the lock rod cam surface formed with a radius;
- a crank wheel having an axis of rotation and a third bearing;
- and
- a linkage including a second bearing comprising an elongated cavity formed in an outer wall facing the lock rod, a fourth bearing, and a cam surface at one end thereof, the cam surface formed with a radius that is substantially identical to the radius of the lock rod cam surface to reduce Hertzian contact stress,
- wherein the linkage is rotationally and translationally coupled to the lock rod by a first pin joint comprising a first pin received within the first bearing of the lock rod and at least partially received within the second bearing of the linkage,
- wherein the linkage is rotationally coupled to the crank wheel by a second pin joint comprising a second pin received with the third bearing of the crank wheel and within the fourth bearing of the linkage,
- wherein rotation of the crank wheel in a first direction causes the linkage to move away from the first pin such that the first pin travels freely in the elongated cavity of the linkage, thereby allowing the linkage to move without pulling the lock rod until the linkage eventually contacts the lock rod cam surface and pushes the lock rod in the forward direction to place the lock rod in the unlocked position.
5 more elements
Dependencies are inferred from the claim text.