Abstract: A tool has a slot provided between a pair of extremities at its distal end. The extremities have cutting blades mounted thereon. The slot is configured to receive a plate. The tool has a conduit running along its axis for communication of pressurized fluid to the slot and plate. The plate directs flow of the pressurized fluid outward toward the extremities. The resulting outward force causes the extremities to bend outward, thereby urging the cutting blades outward for cutting, reaming, or other working of the workpiece. The resilience of the tool causes the extremities to return back inward when the fluid pressure is reduced. A plate may be configured to receive a wafer for transferring force from the pressurized fluid to the extremities. Some embodiments of the plate have an adjustment feature that is operable to selectively adjust the flow rate or pressure of fluid directed toward the extremities.

Abstract: A replaceable drill tip and drill shank combination has a serrated and dowel pinned drill tip and drill shank interface, wherein the drill tip has a serrated bottom surface and a channel for receiving a dowel pin which extends axially from a drill shank, the drill shank having a serrated distal end which engages with the serrations in the bottom surface of the drill tip, and fasteners which extend through the drill tip into the drill shank.

Abstract: A tool for the cutting machining of precision bores in workpieces, with a first machining step which has at least one geometrically defined cutting edge, and with a second machining step which has at least one honing strip with geometrically undefined cutting edges, is proposed. This is distinguished in that the first machining step has at least three support regions which are arranged at a distance from one another in the circumferential direction and which are designed and arranged such that they are supported on the wall of the precision bore during the machining of the latter.

Abstract: A case is mounted to the outer portion of the bottom portion of the shank through a bearing and an absorption rod is situated in an axial hole provided in the axial direction on the bottom of the shank such that it is slidable in the axial direction. An absorption spring for urging the absorption rod in the axial direction is installed between the absorption rod and the shank and a tiltable case is situated on the bottom within the case such that it is capable of tilting with respect to the axial line. A holder is situated rotatably through a bearing within the tiltable case. A slidable holder provided with a chuck portion for a tool at a leading end thereof is situated slidably in the axial direction and the bottom end portion of the absorption rod and the top end portion of the holder are connected to each other through a universal joint.

Abstract: A power tool for drilling a hole in a workpiece made of wood or a wood material. The power tool generally includes a tool housing defining a handle and a motor contained within the tool housing that includes an output shaft that spins about a motor axis. A gear housing is connected to the tool housing. An output spindle is supported for rotation about a spindle axis in the gear housing. The spindle axis is disposed about ninety degrees from the motor axis. A gear portion on the output shaft is engaged to a gear portion on the output spindle. The motor and the gear portions are configured to rotate the output spindle at a speed in range from about five thousand revolutions per minute to about twenty-five thousand revolutions per minute. A cutting member is connected to the output spindle. The cutting member includes fluted cutting blades. A carriage assembly includes a base member and a head member connected by a first post having a first compliant member and a second post.

Abstract: Disclosed is a tap driver for rigid tapping, which includes predetermined tension and compression factors to self-synchronize the tap driver. In the preferred embodiment, the tap driver includes helical coils imparted in the tap driver body which allow the attachment body to synchronize axially in response to a force of a predetermined magnitude imparted on the tap. An additional embodiment of this invention provides such a tap driver body wherein the body allows for lateral flexure and movement to compensate for feed error and location error.

Abstract: A drilling assembly for drilling holes in concrete structures. The assembly includes a base assembly defining a longitudinal axis and adapted to support at least two concrete structures, for example, on turntables positioned in spaced apart relation along the longitudinal axis. A drilling machine is movably mounted to the base assembly between the turntables for movement along the longitudinal axis, and includes a drill assembly having first and second drill bits each substantially aligned along the longitudinal axis and facing substantially opposite directions. In this manner, the drilling machine includes an in-line, dual drill bit assembly which allows the machine to move along a single horizontal axis for both drilling operations and for traversing between the turntables.

Abstract: A motorized precision spindle apparatus (10) including an outer cartridge spindle (12) supported on a motor cartridge spindle (14) and a motor-driven outer cartridge spindle shaft (16) supported for rotation on bearings (22) disposed between the shaft (16) and an outer spindle shaft housing (20). A tool holder (26) releasably holds a tool in position for rotation with the shaft (16). A draw-bar (30) is supported through the shaft (16) and the motor cartridge spindle (14) for reciprocal axial motion, is connected to the tool holder (26), and is biased in an axial direction that causes the tool holder (26) to grip a tool (28). An actuator (32) is connected to the draw-bar (30) and moves the draw-bar (30) in a direction opposite the bias, thereby releasing any tool the holder may be holding. An isolation tube (36) is supported within the motor cartridge spindle (14), is connected to the shaft (16), and supports the shaft (16) against transmitting axial forces to the bearings (22).

Abstract: Adjustment system for positioning a cutting insert on a cutting tool has a rotatable first rod with a surface having a plurality of flatted areas arranged radially, each at a different radial distance from an axial center of the first rod relative to a sequentially adjacent flatted area, a translatable second rod with an axially tapered surface, wherein a face of the first end of the second rod contacts one of the plurality of flatted areas, a biasing element positioned to exert a force to bias the face of the first end of the second rod to contact the flatted area, and a translatable push pin, wherein a face of the first end of the push pin contacts the tapered surface and wherein a face of the second end of the push pin operatively contacts a cartridge mounted on the cutting tool and in which the cutting insert is seated.

Abstract: Methods of producing a pipe include curling a skelp into a cylindrical shape by bringing laterally opposed edges of the skelp together to form a seam, butt welding the seam to define the pipe downstream of the skelp, thereby leaving a radially inwardly extending weld bead. The weld bead is deburred off the pipe according to a depth of cut of a cutting tool. The depth of cut may be adjusted during deburring, and/or rotation of the cutting tool may be adjusted during deburring. The methods may be carried out using one or both of an adjustment device carried by a housing to pivot an adjustment member for adjustment of an upstream guide to adjust a depth of cut of the cutting tool into the weld bead, or an adjustment device carried by the housing and coupled to the cutting tool to rotate the cutting tool during deburring.

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

Abstract: A chattering vibration inhibiting mechanism capable of inhibiting chattering vibration of a machine tool without increasing weight nor requiring a time-consuming adjustment work is provided. A box-shaped package body 21 attached to a spindle head 6, a supporting member 22 disposed to bridge between front and rear walls 21a, 21b in the box-shaped package body 21, and a damper 23 composed of an elastic member 27 and a weight 26 supported by the supporting member 22 are provided.

Abstract: A chuck for use with a manual or powered driver having a housing and a rotatable drive shaft extending therefrom is provided. The chuck includes a generally cylindrical body member having a nose section and a tail section. Each of a plurality of jaws is slidably positioned in one of a plurality of angularly disposed passageways in the body. Each jaw has a jaw face formed on one side thereof and threads formed on the opposite side thereof. A nut is rotatably mounted on the body in engagement with the jaw threads so that rotation of the nut moves the jaws axially within the passageways. A locking member, in a first axial position, is rotatable with respect to the driver housing. In a second axial position, it operatively engages the housing and the nut so that the locking member is rotationally held to the housing and the nut so that the nut is rotationally held to the housing. The locking member is axially reciprocal between the first axial position and the second axial position.

Abstract: A spindle apparatus includes a housing for rotatable support of a spindle. The spindle is sealed by a brush seal in order to prevent fluid, contained in the housing, from escaping and/or to prevent ingress of a medium from outside into the housing.

Abstract: A drill for chip removing machining, including a drill body, and a replaceable cutting insert mounted in a pocket formed in a front tip of the drill body. A chip flute extends backwardly from the pocket along the drill body, and the cutting insert is fixed in the pocket by a screw including a head and a shank having a male thread. The cutting insert includes a through hole extending between a topside and an underside. The hole has a basic shape that is rotationally symmetrical in relation to a center axis, and is delimited by a series of surfaces including a mouth surface, converging downward from the topside, and a shoulder surface. The head of the screw is kept pressed against the shoulder surface when the male thread of the screw is tightened in a female thread included in a hole that mouths in a bottom of the pocket. The mouth surface in the hole of the cutting insert has a trumpet-like, cross section-wise convex shape adjacent to the topside of the cutting insert.

Abstract: A method and apparatus are provided to machine a curved surface such as an inner or outer peripheral surface of a pipe. The pipe is held stationary during machining and a rotatable spindle of a machine head moves along multiple orthogonal axes to align the rotational axis of the spindle with the longitudinal pipe axis. Preferably, the pipe axis is located by using a touch probe to engage the curved surface at multiple spots and the calculating the location of the pipe axis. The cutting tool, which is preferably a cutting tool insert, is rotated by the spindle to machine the curved surface.

Abstract: A hole saw having efficient slug removal includes a saw cup, a shank portion, a spade bit, a compression spring and a contact disc. A plurality of cutting teeth are formed on an open end of the saw cup and the shank portion is attached to the other end of the saw cup with any suitable fastening process. The spade bit includes a cutting bit and a shank. A shank opening is formed through the shank portion to receive the shank of the spade bit. Preferably, a set screw or the like is used to retain the spade bit in the shank opening. The shank of the spade bit is inserted through the contact disc and then the compression spring, before insertion into the shank opening. A hole slug is ejected from the saw cup, when the hole saw is removed from a hole.

Abstract: A drill bit for producing holes in composite materials is disclosed. The drill bit includes an elongate drill bit body having a drill bit diameter. The drill bit also includes at least two helical flutes. The helical flutes have a reverse helix angle and a primary cutting edge. The primary cutting edge may have a positive rake angle. The drill bit further includes a point having a point length. The drill bit may also include a cutting tip with a tip angle and a tip length. The tip length is at least twice the drill bit diameter.

Abstract: The invention concerns a wood drill bit with a cylindrical drilling head. The drilling head has at its end a centering tip which is disposed on the longitudinal axis of the drill bit and which projects in the drilling direction for centering the wood drill bit, at least two main cutters which are arranged diametrically and radially or substantially radially and have main cutting edges, and a pan-cylindrical guide bell. Adjoining each main cutter is a chip ejection space which is partially open towards the connecting portion. It is proposed inter alia that the main cutter extends with a radially inwardly disposed portion into the centering tip and the chip ejection space is enlarged into the centering tip by means of a pre-chip ejection groove.

Abstract: A blade for a cutting tool. The cutting tool can be supportable on a spindle of a power tool. The blade can include a blade body removably supportable on the cutting tool and being moveable with the cutting tool relative to the power tool for cutting a workpiece. The blade can further include a first cutting edge extending outwardly from the blade body and a second cutting edge extending outwardly from the blade body. When the blade is supported in the cutting tool, the first cutting edge can extend radially across an end of the cutting tool and the second cutting edge can be positioned adjacent an outer circumference of the cutting tool.