Abstract

A toolholder assembly (10) for releasably holding a toolholder (50) includes a toolholder (50) having a tubular shank (56) with at least two perforations (58); a tool support member (20); a canister (30) disposed within the tool support member (20) and including at least two apertures (32); a lock rod (40) movable within the tool support member (20) in a reciprocating motion for pulling the toolholder (50) into a locked position and for releasing the toolholder (50) to an unlocked position; and at least two locking elements (36) disposed within the spaced apertures (32) of the canister (30) and engaging the lock rod (40) so that movement of the lock rod (40) causes the locking elements (36) to extend radially outward from the canister (30). The circumferentially spaced perforations (58) of the tubular shank (56) each include a primary cylindrical wall (59) and a forward facing contact surface (60) at least partially defined by a depression having a converging wall surface (61) non-concentric with the primary cylindrical wall (59) of the perforations (58).

IPC Classes  ?

• B23B 29/12 - Special arrangements on tool holders
• B23B 29/14 - Special arrangements on tool holders affording a yielding support of the cutting tool, e.g. by spring clamping
• B23B 29/22 - Special arrangements on tool holders for tool adjustment by means of shims or spacers
• B23B 29/04 - Tool holders for a single cutting tool
• B23B 31/22 - Jaws in the form of balls

Abstract

A coolant coupling system for coupling a toolholder (10) to a toolholder support member (15), wherein the shank (35) of the toolholder (10) is secured within the bore (65) of the toolholder support member (15) with an interference fit and a coolant channel (120) extends through the toolholder support member (15) to the toolholder (10) passing through the region of the interference fit to provide a high pressure seal for the coolant passageway (105, 125) between the toolholder (10) and the toolholder support member (15).

IPC Classes  ?

• B23B 29/12 - Special arrangements on tool holders
• B23B 29/04 - Tool holders for a single cutting tool
• B23B 29/00 - Holders for non-rotary cutting toolsBoring bars or boring headsAccessories for tool holders
• B23C 5/28 - Features relating to lubricating or cooling

Abstract

A tool holder (10, 10') includes a body (12, 112), a cutting head (14, 114) having a cutting end portion (38, 138) and a tapered end portion (42, 142), a retention knob (16, 116) located at the tapered end portion of the cutting head, and a ball clamping mechanism (20, 120) received in an aperture (34, 134) of the body. The ball clamping mechanism includes an upper clamp (22, 122), a lower clamp (24, 124), and a double-ended clamp screw threaded (26, 126) onto the upper and lower clamps. Rotation of the clamp screw in a one direction causes the upper clamp and the lower clamp to move toward each other and engage the retention knob to place the tool holder in a locked position, and rotation of the clamp screw in an opposite direction causes the upper clamp and the lower clamp to move away from each other such that the upper and lower clamps no longer engage the retention knob to place the tool holder in a unlocked position.

IPC Classes  ?

• B23B 31/06 - Features relating to the removal of tools or workAccessories therefor
• B23B 31/10 - Chucks characterised by the retaining or gripping devices or their immediate operating means
• B23B 31/00 - ChucksExpansion mandrelsAdaptations thereof for remote control
• B23Q 3/12 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for securing to a spindle in general

Abstract

A tool holder assembly (10) includes a tool holder (12) with a shank (22) and a key slot (30) having a surface (33) with an angled portion (33a) that forms a non-zero angle (35) with respect to a longitudinal axis of the tool holder assembly. A clamping mechanism (14) includes a support block (32), a ball canister (60) including a key (64), and a lock rod (80). An interference fit key arrangement is provided between the tool holder (12) and the clamping mechanism (14) by an abutment surface (55a, 66a) located along the first side wall of the key (64). The abutment surface (55a, 66a) contacts the angled portion (33a) of the key slot (30) to cause the key slot (30) to undergo elastic deformation and allow simultaneous contact between the abutment surface (55a, 66a) and the angled portion (33a) of the key slot (30) and the second side wall (68) of the key (64) and the second surface (31) of the key slot.

IPC Classes  ?

• B23B 29/00 - Holders for non-rotary cutting toolsBoring bars or boring headsAccessories for tool holders
• B23B 29/04 - Tool holders for a single cutting tool
• B23B 29/14 - Special arrangements on tool holders affording a yielding support of the cutting tool, e.g. by spring clamping
• B23B 29/22 - Special arrangements on tool holders for tool adjustment by means of shims or spacers
• B23Q 3/00 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine

Abstract

A rotary tapered tool holder (10) includes a body (12) and an adapter sleeve (14) disposed about a portion of the body. The body (12) and the adapter sleeve (14) have front and rear contact surfaces (12c, 12e) with different taper angles. The front contact surfaces (12c) are optimized for an interference fit and the rear contact surfaces (12e) provide an axial stop and support band when the tool holder (10) is assembled into a clamping receptacle (28). Face contact is achieved between a flange contact surface (12k) of the body (12) and a face contact surface (28a) of the clamping receptacle (28).

IPC Classes  ?

• B23Q 3/12 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine for securing to a spindle in general
• B23C 5/26 - Securing milling-cutters to the driving spindle
• B23C 5/20 - Milling-cutters characterised by physical features other than shape with removable cutter-bits or teeth
• B23Q 3/00 - Devices holding, supporting, or positioning, work or tools, of a kind normally removable from the machine