Abstract:
A fastener extraction ratchet bit system for facilitating extraction of stripped fasteners by permitting attachment of extraction bits to an air drive ratchet. The system includes a driving tool and a fitting coupled to and extending from the driving tool. A drill socket is coupled to a drill bit wherein the drill bit is selectively couplable to the fitting such that the driving tool provides a driving force to the drill bit. An extraction socket is coupled to an extraction bit wherein the extraction bit is also selectively couplable to the fitting such that the driving tool provides the driving force to the extraction bit.
Abstract:
A method and machine for making a quick change drill assembly that can be snapped into and out of a spring-loaded ball-locking chuck. The assemblies are comprised of standard sized adapters having various sized bores to receive drills having shanks of corresponding interference-fit diameters. Adapters and drills are fed from opposite ends of the machine to positions from which they are interference fit and automatically discharged. The adapters are fed into a storage tube from a feeder bowl and in the storage tube they are selected or rejected according to the direction of the bore. Selected adapters are air driven to a magazine in a retracted position and from which it is movable to a supplying position. In the supplying position the individual adapter is forced into a radially biasing collet in a hydraulic press. The drills are dropped from a hopper into a slot-bar from which they are pushed into a drill collet in alignment with the adapter collet, the drill being held in the collet by a hydraulic clamping mechanism. The drill shank extends outwardly of the collet toward the bore in the adapter and the adapter is then carried in its collet by a hydraulic ram to be interference fit on the end of the drill shank. The drill is then released in its collet and the adapter collet is retracted to withdraw the drill, secured to the adapter, from the drill collet. The assembly is then pushed out of the adapter collet by a hydraulically operated piston so as to fall into a collecting bin.
Abstract:
The invention relates to a rod-shaped tool made of sintered material that is used to machine a workpiece. Said tool comprises a rod center axis (1), a shaft area (6) and a chip space area (5) adjacent thereto in the direction of the rod center axis (1). The tool has at least one outside chip space (4), which encircles the rod center axis (1), in the chip space area (5) but not in the shaft area (6). The chip space (4) is situated at a minimum distance (a) from the rod center axis (1). A central recess (7) extends in the direction of the rod center axis (1) over the shaft area (6) whereby leading up and into the chip space area (5). The central recess has, in the chip space area (5), a non-circular cross-section and is situated at a maximum distance (A) from the rod center axis (1), said maximum distance being at least as large as the minimum distance (a)
Abstract:
A cutting tool includes a working portion adapted to cut a threaded hole or a hole in a predetermined workpiece, a first clamp portion provided at an end opposite to the working portion and adapted to be clamped by a clamping device to facilitate local application of force, and a weak portion disposed between the working portion and the first clamp portion and adapted to bear a torsional force smaller than that borne by other portions. The weak portion, during use of the cutting tool in a cutting operation, is always located on the surface of the workpiece and will break when the cutting tool cannot stand an excessive torsion. The broken portion will likewise always be located on the surface of the workpiece, whereby the user can easily clamp the portion exposed on the outside of the workpiece.
Abstract:
A composite rotary cutting tool and adaptor includes a straight cutting tool, such as a drill bit or the like, having a cylindrical shank adhesively bonded within a close fitting axial bore in an adaptor or gripping member which has an outer circumferential gripping surface larger than the cutting tool shank. The cutting tool shank has at least one helical channel or groove formed therein so as to maintain a substantial portion of the original cylindrical surface area. The adaptor is hardened in a manner to prevent scale formation in the bore, and an anaerobic adhesive is applied within the bore and along the shank and into the helical groove. The shank is inserted into the adaptor bore to effect full wetting between the interfacing surfaces. The assembly is then fixtured in a vertical orientation and heat cured so as to obtain a composite cutting tool and adaptor having high torque and low concentricity run-out and angularity error.
Abstract:
A toolholder assembly includes a toolholder having a toolholder shank with a non-circular cross-section, a base member having a bore with a non-circular cross-section that receives the toolholder shank, a canister positioned in the base member, a lock rod positioned in the canister, a locking ball for cooperating with the lock rod, the canister and/or the toolholder shank and an actuating element configured for cooperation with the lock rod for moving the lock rod between a locked position and an unlocked position.
Abstract:
The cutting tool (1), especially drill or milling cutter, comprises a base (3) which extends in an axial direction (2) and has an outer shell (14) with at least one interior recess (18) that extends in the axial direction (2), a supporting structure (16) having at least one separating piece (26) which separates a plurality of recesses (18) from each other being formed in the supporting structure. The cutting tool (1) is particularly a solid hard-metal tool. The supporting structure (16) ensures an efficient use of material.
Abstract:
The invention relates to a rod-shaped tool made of sintered material that is used to machine a workpiece. Said tool comprises a rod center axis (1), a shaft area (6) and a chip space area (5) adjacent thereto in the direction of the rod center axis (1). The tool has at least one outside chip space (4), which encircles the rod center axis (1), in the chip space area (5) but not in the shaft area (6). The chip space (4) is situated at a minimum distance (a) from the rod center axis (1). A central recess (7) extends in the direction of the rod center axis (1) over the shaft area (6) whereby leading up and into the chip space area (5). The central recess has, in the chip space area (5), a non-circular cross-section and is situated at a maximum distance (A) from the rod center axis (1), said maximum distance being at least as large as the minimum distance (a)
Abstract:
A device for linking two tool parts has a projecting shaft (12) on the first tool part (10), as well as an annular surface (20) that surrounds the shaft (12) at its root, and a projecting coupling sleeve (16) on the second tool part (14) that has a cavity (18) for receiving the shaft (12) and a front face (22) that can be pressed against the annular surface (20) during clamping. In order to achieve, besides end face clamping, also a self-centering radial clamping of the shaft (12) within the coupling sleeve (16), the shaft (12) has a cavity (24) axially open towards the front face end of the shaft and a clamping body (28) axially movable within the cavity (24). The clamping body (20) is loosely screwed with an outer thread (72) in an inner thread (70) of the hollow shaft and secured against rotation. The wall (38) of the cavity is sized so that it can elastically bulge or expand in the radial direction over the slanted flanks (26, 30) of the thread and be pressed against the inner side of the coupling sleeve (16) when the clamping body (28) is pressed in the axial direction.
Abstract:
The cutting tool (1), especially drill or milling cutter, comprises a base (3) which extends in an axial direction (2) and has an outer shell (14) with at least one interior recess (18) that extends in the axial direction (2), a supporting structure (16) having at least one separating piece (26) which separates a plurality of recesses (18) from each other being formed in the supporting structure. The cutting tool (1) is particularly a solid hard-metal tool. The supporting structure (16) ensures an efficient use of material.