Clamping assembly, a toolholder assembly comprising a clamping assembly and a toolholder, and a method of changing a toolholder in a toolholder assembly
A clamping assembly includes a base member having an internal bore, a lock rod within the internal bore of the base member and moveable in a forward direction and rearward direction between an unlocked position and a locked position, a crank wheel having an axis of rotation, and a linkage coupled to the lock rod and coupled to the crank wheel at a position radially offset from the axis of rotation of the crank wheel.
1. 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;
a crank wheel having an axis of rotation; and
a linkage rotationally coupled to the lock rod by a pin joint and coupled to the crank wheel at a position radially offset from the axis of rotation of the crank wheel.
2. The clamping assembly of claim 1 , wherein the pin joint comprises a pin rotationally coupled within a bearing within one of the linkage and the lock rod.
3. The clamping assembly of claim 2 , wherein the bearing is a blind hole.
4. The clamping assembly of claim 2 , wherein the bearing is a through hole.
5. The clamping assembly of claim 2 , wherein the pin is rotationally coupled within a bearing within the other of the linkage and the lock rod.
6. The clamping assembly of claim 2 , wherein the pin is fixedly coupled to the other of the linkage and the lock rod.
7. The clamping assembly of claim 1 , wherein the linkage is rotationally coupled to the crank wheel by a pin joint.
8. The clamping assembly of claim 7 , wherein the pin joint comprises a pin rotationally coupled within a bearing within one of the linkage and the crank wheel.
9. The clamping assembly of claim 8 , wherein the bearing is a blind hole.
10. The clamping assembly of claim 8 , wherein the bearing is a through hole.
11. The clamping assembly of claim 8 , wherein the pin is rotationally coupled within a bearing within the other of the linkage and the crank wheel.
12. The clamping assembly of claim 8 , wherein the pin is fixedly coupled to the other of the linkage and the crank wheel.
13. The clamping assembly of claim 1 , wherein the base member includes a canister positioned within the internal bore of the base member, wherein the lock rod is positioned within a canister bore of the canister.
14. A toolholder assembly comprising:
the clamping assembly of claim 1 ; and
a toolholder having a shank configured to be received within the internal bore of the base member.
15. The toolholder assembly of claim 14 , wherein the toolholder comprises a cutting insert.
16. A method of changing a toolholder in the toolholder assembly of claim 14 , the method comprising:
rotating the crank wheel in a first direction to unclamp a first toolholder from the clamping assembly;
removing the first toolholder from the clamping assembly;
inserting a second toolholder into the clamping assembly; and
rotating the crank wheel in a second direction to clamp the second toolholder into the clamping assembly.
17. 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;
a crank wheel having an axis of rotation; and
a linkage coupled to the lock rod and rotationally coupled to the crank wheel by a pin joint at a position radially offset from the axis of rotation of the crank wheel.
18. The clamping assembly of claim 17 , wherein the pin joint comprises a pin rotationally coupled within a bearing within one of the linkage and the crank wheel.
19. The clamping assembly of claim 18 , wherein the bearing is a blind hole.
20. The clamping assembly of claim 18 , wherein the bearing is a through hole.
21. The clamping assembly of claim 18 , wherein the pin is rotationally coupled within a bearing within the other of the linkage and the crank wheel.
22. The clamping assembly of claim 18 , wherein the pin is fixedly coupled to the other of the linkage and the crank wheel.
23. The clamping assembly of claim 17 , wherein the base member includes a canister positioned within the internal bore of the base member, wherein the lock rod is positioned within a canister bore of the canister.
24. A toolholder assembly comprising:
the clamping assembly of claim 17 ; and
a toolholder having a shank configured to be received within the internal bore of the base member.
25. The toolholder assembly of claim 24 , wherein the toolholder comprises a cutting insert.
26. A method of changing a toolholder in the toolholder assembly of claim 24 , the method comprising:
rotating the crank wheel in a first direction to unclamp a first toolholder from the clamping assembly;
removing the first toolholder from the clamping assembly;
inserting a second toolholder into the clamping assembly; and
rotating the crank wheel in a second direction to clamp the second toolholder into the clamping assembly.