Abstract: A separation type hole saw, includes: a hole saw (3); a hole saw mounting metal fitting (2); a shank (5); a spherical body (13) inserted to the hole portion (12); an annular spring (14) inserted to the annular groove (15) and urging the spherical body (13) so that the spherical body (13) presses the fitting convex portion (2a) of the hole saw mounting metal fitting (2), thereby preventing the fitting recess portion (5a) of the shank (5) from being taken out from the fitting convex portion (2a) of the hole saw mounting metal fitting (2) due to the pressing operation of the spherical body (13); a center pin (6) inserted to a center portion of the shank (5) and guiding the hole saw (3) at a time of drilling a material in which a guide groove (19) is formed in an outer periphery of an end portion of the center pin (6) inserted to the shank (5); and a fitting member (22) provided in the shank (5).

Abstract: The clamping chuck comprises six jaw carrier arms (4) that are operated two by two by one and the same compensator (5). Each compensator hinges with a pulling member (3) centered on the axis of the chuck and sliding axially in its main body (1) through the action of a traction rod (11). The pulling member is provided with pairs of wings (14a, 14b) extending on either side of the central portion of the compensator (5). Application to clamping chucks for high speed machining.

Abstract: The invention provides a chuck including a plurality of jaws (8), each of which is fixed to the forward end of a jaw carrier arm (5), said arm (5) being borne by a pivot joint (6) mounted on the body (1) of the chuck and the rotation of which imparts to the jaw (8) an essentially radial movement, said rotation being controlled by radially displacing a sliding member (4) pushing a truncated sphere (10) housed between said sliding member (4) and a recess provided in the arm (5) to the rear of said pivot joint (6). Furthermore, said truncated sphere (10) is capable of sliding over the plane surface of contact with the sliding member (4), said jaw carrier arm (5) then sliding in the pivot joint (6) in an essentially axial direction, while being drawn rearwards by a return spring (7). Application to the clamping of a piece while pressing it axially against its stops.

Abstract: A chuck for use with a manual or powered driver including a generally cylindrical body having a nose section and a tail section. The tail section defines an axial bore formed therein to mate with the drive shaft of the driver and the nose section defines an axial bore formed therein and a plurality of angularly disposed passageways formed therethrough and intersecting the axial bore. A plurality of jaws are slidably positioned in each passageway and each jaw defines a jaw face formed on one side and threads formed on the opposite side. A nut is disposed about the body for rotational movement with respect to the body and is in driving engagement with the jaw threads. A generally cylindrical front sleeve overlays the nose section of the body. A generally cylindrical nut retainer is disposed about the body and includes a frusto-conical portion.

Abstract: A clamping device for objects such as workpieces to be treated and the like has a base body having at least one abutment surface for at least one object to be clamped, at least one clamping finger located on a movable carrier and having at least one clamping surface for at least one object to be clamped, so that a clamping force for clamping the at least one object is applied between the abutment surface and the clamping surface, an actuating element in operative connection with the at least one carrier for applying a clamping force in a clamping direction and opposite to it so that the carrier with the clamping finger being movable in a direction substantiallytransverse to the clamping direction relative to the actuating element, and a bearing block in which the carrier with the clamping finger is held movably relative to the bearing block, the bearing block being displaceble in the base body substantially transversely to the clamping direction.

Abstract: A self feeding drill bit for making a smooth bore in a workpiece has a spiral land and flute with a leading end carrying a centered lead screw. The leading end of the bit has a cutter extending from said lead screw to the circumference of the bit. Diametrically opposed to the cutter is an inscriber formed as a curved blade by the periphery of the leading land. In use, the inscriber makes a smooth surfaced cut in the workpiece with the cutter removing the remainder of the workpiece within the scribed cut.

Abstract: A cutting tool for locating an axis in a first member and cutting a sized hole in a second member overlying the first member. The cutting tool includes a base assembly and a cutter assembly which may be used independently of the base assembly. The cutter assembly includes a guide member, a cutting blade and a handle structure with a face portion. The guide member is coupled to the handle structure and extends from the face portion. The cutting blade is coupled to the handle structure such that the cutting blade extends from the face portion and is spaced radially outward of the guide member. The base assembly has a base structure, a stem member and a pilot aperture. The base structure has a first side adapted to contact the second member and a distal side adapted to contact the first member. The stem member is coupled to the distal side of the base structure and is adapted to engage a hole in the first member to locate the axis in the first member.

Abstract: A mechanism for engaging a chuck to a chuck body includes a bore within the chuck body having first and second opposed channels in communication therewith. A shaft extending from the chuck is configured for seating in the bore and includes two opposed vanes for seating in the channels. The vanes are depressible allowing for initial bore penetration and seating of the chuck shaft into the bore. Upon seating the vanes are biased into the channels locking the chuck shaft in the bore. A tool provides for depression of the vanes allowing for removal of the seated chuck shaft from the bore. Alternative mechanisms for locking a chuck, chuck body and a driven shaft are disclosed.

Abstract: A chuck includes a generally cylindrical body having a nose section and a tail section. A plurality of jaws are movably disposed with respect to the body to and away from the chuck's axial bore. Each jaw includes a tool engaging surface facing, and generally parallel to the axis of, the axial bore. Each jaw includes a back surface opposite the tool engaging surface and a pair of planar side surfaces extending from the tool engaging surface toward the back surface. The side surfaces are disposed on either side of a plane that includes the axis. The side surfaces define an angle through the jaw between the side surfaces that is greater than 120°.

Abstract: A modified Forstner type drill bit includes a shank and a drill head. The drill head includes a center brad, first and second radial cutters, first and second following rims and first and second chip channels. The center brad defines a longitudinal direction. The first and second of radial cutters extend radially from the center brad. The first and second following rims extend circumferentially from and following from in the direction of rotation the distal end of the first and second radial cutters respectively. Each following rim is divided into a plurality of segments, each have a top portion. The top portion of the segments of each following rim are generally in the same plane. The first and second chip channels are positioned adjacent to and before in the direction of rotation the first and second radial cutters respectively. The first and second chip channels are between the one of the first and second radial cutter and the second and first following rims.

Abstract: The present invention provides for a readily exchangeable flex tool for machining a workpiece. The flex tool includes a driver and an tool carrying body. The driver is coupled to the tool carrying body in a manner which allows the tool carrying body to have at least two degrees of freedom with respect to the driver. The tool carrying body includes an elongate pilot shaft, the elongate pilot shaft and tool carrying body having a longitudinal axis. The at least two rotational degrees of freedom allowing the longitudinal axis of the tool carrying body and elongate pilot shaft to be aligned with a longitudinal axis of a reference bore contained in the workpiece and slidably inserted therein.

Abstract: A universal bit adapter includes: an adapting member clamped in a chuck or spindle of a tool having a shank hole longitudinally formed in the adapting member for inserting a tool bit into the shank hole; a sleeve coupled to a front portion of the adapting member for pivotally mounting a control member in a front portion of the sleeve; and a tension spring resiliently held in the sleeve for tensioning a back portion of the control member for normally biasing the control member to allow an axis of a central hole formed through the control member to be eccentrically inclinedly intersected with a longitudinal axis formed in the shank hole in the adapting member for firmly dogging any shank portion of the tool bit in the central hole in the control member regardless of the positioning of the neck portion as recessed in the shank portion of the tool bit.

Abstract: A tool for cutting machining a workpiece, including a cutter plate supported on a holder for machining a surface and additionally comprising a tool projecting from the body of the tool. The cutter plate is supported on a holder which is in turn supported on a rotatable eccentric such that rotation of the eccentric moves the holder radially. A cooperating converting device converts axial movement of an actuating device into rotation of the eccentric through intermeshing gear elements. A second tool, e.g., a reamer, is moved by a second push/pull rod axially with respect to the body of the tool and into the workpiece, and the second tool is supported on the axis of the main body.

Abstract: A cutting tool (200, 202) has a longitudinally extending shaft portion (208) with a chucking part (204) and a cutting head (206). A cutting edge (220) is formed on the cutting head (206). The cutting edge (220) includes at least one cutting portion. A rake surface (224) is formed adjacent to at least one of the cutting portions (220) with the rake face being at a rake angle in the range from about −10° to about 10°. A clearance face (226) is formed adjacent to the at least one cutting portion opposite the rake face (224). The clearance face (226) is at a clearance angle in the range from about 10° to about 50°. An edge radius between the rake face and the clearance face is at a radius of from about 0.0003 to about 0.0040 inch.

Abstract: The invention relates to a chuck with chuck jaws (2) which are guided in the chuck housing (1). Inner jaws (4) which can be coupled or uncoupled are assigned directly or indirectly to said chuck jaws via rack gears (3), whereby the inner jaws (4) are connected to a central pulling head (12) via a wedging mechanism. The pulling head is connected via a rod or hollow shaft (13), said rod or hollow shaft being guided in a central bore of the main spindle (25), to the piston of a hydraulic cylinder arranged on the rear part of the main spindle (25).

Abstract: A rotary device has a releasable tool holder. A spindle with two ends has one end adapted to secure to a rotary device and the other includes a bore to receive a tool. A mechanism to retain and release the tool from the spindle bore is coupled with the spindle adjacent the bore end. At least two unlike retention members to apply a force on the tool in the bore are adjacent the bore. A sleeve surrounds the bore end of the spindle as well as the at least two unlike retention members. The sleeve has a common surface to apply a force on the at least two unlike retention members such that when the sleeve is axially moved along the spindle, the force is varied with respect to the position of the surface on the retention member. This force maintains the tool in the bore or enables the tool to be removed from the bore. A biasing member maintains the sleeve in a retention position on the spindle.

Abstract: A drill chuck has a body having a front part and a rear part, and formed with a plurality of angled guides opening axially forward at the front part. Respective jaws axially and radially displaceable in the guides are each formed with a row of teeth engaging an internal thread of a one-piece and unsplit tightening ring axially fixed but rotatable about the axis on the chuck-body front part and having an inner diameter greater than an outer diameter of the chuck-body front part. Thus rotation of the tightening ring displaces the jaws in their guides. A one-piece and unsplit snap ring set in the chuck-body rear part bears axially forward on the tightening ring, is formed with an array of outwardly projecting teeth, and has an inner diameter greater than the outer diameter of the chuck-body front part. An adjustment sleeve rotatable about the axis on the body has a front end with a surface bearing directly on the chuck-body front part.

Abstract: A thread-cutting apparatus with reversal of the direction of rotation with a sun-and-planet gear with an axially displaceable reversing device for reversing the direction of rotation of a drill, held in the grip of a spindle, which can be pulled out preferably against a length equalization spring after a given drilling head depth has been reached, especially reversing chucks with pressure equalization pipelines, which discharge into an equalization chamber, sealed by a movable wall from the outside air, wherein the reversing device is actuated by an external driving element, which can be actuated by a reversing signal generated by an actuator.

Abstract: A chuck key of the type having an elongated cylindrical handle (12) that is used to apply torque to a chuck engaging gear (10) at one end of the handle. The chuck key is smooth, with a cylindrical abbreviated curve formed at the gear end, and without protrusions such that no feature of the key is prone to snagging. A smooth elastomeric chuck key holder (14) is attached in frictional engagement to the handle, and is used to tether the chuck key to an electric drill's power cord.

Abstract: A clamping device has a collet or a sleeve that contains an inner coolant supply. The non-through parts of the clamping device have formed therein radial slits and/or intermediate slits that open at the machine side and/or the tool side of the shank of the device. The slits and non-through parts of the device are arranged in such a way that they form a coolant barrier.