Toolholder assembly
AssigneeKennametal PC Inc.
InventorsRobert A. Erickson, William M. Long
Life of this patent
Estimating the term…
Abstract
An apparatus is disclosed for releasably holding a toolholder shank having a lockable surface and a releasable surface utilizing an actuating bolt with an associated threaded actuating nut. When the actuating bolt is rotated in a locking direction, the actuating nut is drawn onto the bolt thereby clamping against the lockable surfaces of the toolholder shank. When the actuating bolt is rotated in the releasing direction, a releasing segment acts upon the toolholder thereby ejecting it from the tool support member.
Claims18
An apparatus for releasably holding a shank of a toolholder, the apparatus comprising:
- (a) a tool support member having a bore for receiving the shank of the toolbolder,
- (b) a rotatable actuating bolt positioned within the too support member having a first end with a bolt locking segment having a bolt locking surface;
- (c) an actuating nut rotatably fixed within the tool support member and secured to a second end of the actuating bolt and having a nut locking segment having a nut locking surface;
- and
- (d) wherein rotation of the actuating bolt in a locking direction causes the actuating nut to be drawn to the bolt first end thereby drawing together the nut locking surface and the bolt locking surface to engage the toolholder and to lock the toolholder within the tool support member;
- wherein the actuating bolt further includes a releasing segment having a releasing surface for abutting and urging the toolholder shank from the tool support member, wherein the releasing segment is disposed between the first end and the second end of the actuating bolt and wherein the actuating bolt has a shank and the releasing surface is either recessed within the actuating bolt shank or protrudes from the actuating bolt shank.
An apparatus for releasably holding a shank of a toolholder, the apparatus comprising:
- (a) a tool support member having a bore for receiving the shank of the toolholder;
- (b) a rotatable actuating bolt positioned within the tool support member having a first end with a bolt locking segment having a bolt locking surface;
- (c) an actuating nut rotatably fixed with the tool support member and secured to a second end of the actuating bolt and having a nut locking segment having a nut locking surface;
- and
- (d) wherein rotation of the actuating bolt in a locking direction causes the actuating nut to be drawn to the bolt first end thereby drawing together the nut locking surface and the bolt locking surface to engage the toolholder and to lock the toolholder within the tool support member;
- wherein the actuating bolt further includes a releasing segment having a releasing surface for abutting and urging the releasable surface of the shank to eject the toolholder shank from the tool support member, and wherein the actuating nut is restrained within a passageway.
A combination for mounting a toolholder into a bore of a tool support member, said combination comprising:
- (a) a tool support member having:
- (i) a forwardly facing surface and a bore, wherein the bore intersects the forwardly facing surface and extends rearwardly therefrom for receiving the shank of the toolholder;
- (ii) an actuating bolt positioned within the tool support member and having a first end with a bolt locking segment having a bolt locking surface;
- and
- (iii) an actuating nut rotatably fixed within the tool support member, secured to a second end of the actuating bolt and having a nut locking segment having a nut locking surface;
- and
- (b) the toolholder having a forward end upon which a cutting tool may be mounted and a shank adjacent to and connected to a rearwardly facing abutment face and extending rearwardly away from the forward end, wherein the shank has:
- (i) a releasable segment with a releasable surface engageable by a bolt releasing surface;
- and
- (ii) a pair of lockable segments with lockable surfaces defined by perforations circumferentially spaced about the shank and engageable by the bolt and nut locking surfaces, wherein the pair of lockable surfaces of the toolholder have the shape of a cone with a common lockable cone centerline and wherein the lockable surfaces are located rearwardly of the cone centerline.
Dependencies are inferred from the claim text.