Abstract: A chuck assembly includes a chuck body rotatable about an axis, a plurality of jaws each received within a slot of the chuck body for co-rotation with the chuck body about the axis, a wedge engageable with an outer surface of each jaw, a pusher coupled to the plurality of jaws to bias the plurality of jaws in a forward direction into engagement with the wedge, and a tightening sleeve threadably coupled to the chuck body for relative rotation with the chuck body. The tightening sleeve includes a clamping surface engageable with the wedge for inwardly displacing the plurality of jaws in a radial direction, causing the plurality of jaws to secure a tool bit received within the chuck assembly, in response to rotation of the tightening sleeve relative to the chuck body in a tightening direction.

Abstract: A drill bit has a cutting portion having an annular portion, where the annular portion has a first end on which is disposed a cutting element and a second end that includes an outer insertion element and a stop shoulder. The drill bit has a drill shaft portion having a cylindrical drill shaft, where the drill shaft has an inner insertion element with an end face on a side of the drill shaft facing the cutting portion. The outer insertion element and the inner insertion element together form a plug connection in an insertion direction that is parallel to the axis of rotation and the insertion elements are connectable to each other via a pin element that is movable into a slot-shaped recess. The pin element is attached to an outside of the inner insertion element and the outer insertion element has the slot-shaped recess.

Abstract: An accessory for coupling to an oscillating power tool includes a working end portion and an attachment portion. The working end portion defines and extends along a working axis. The attachment portion is coupled to the working end portion and includes a top wall, a bottom wall spaced apart from the top wall, and a peripheral wall extending from the top wall to the bottom wall at least partially around the top wall to form at least a portion of a polygonal shape. A generally U-shaped opening is defined in the top wall, extends along an attachment axis at an angle to the working axis, has a central portion at a center of the attachment portion, and is open to a gap in the peripheral wall. A plurality of radial openings is defined in the top wall and arranged between the U-shaped opening and the peripheral wall.

Abstract: A cutting tool assembly includes a tool body and a tool holder. The tool holder includes a cylindrical portion connected to the tool body, an eccentric drive member, and a fastener hole configured to receive a securing fastener. The eccentric drive member can include a trigon portion comprising a rounded triangular cross section.

Abstract: In an inherently safe robotic tool changer, a master unit couples to a tool unit via a first power source, and decouples from the tool unit using a separate, second power source. The second power source is only available when an attached tool is safely disposed in a tool stand. In embodiments where the first power source is not selectively applied, such as the constant bias provided by a spring, a detent mechanism maintains the master unit in a decoupled state when the master unit is removed from the tool unit. The detent mechanism allows the master unit to couple to a different tool unit upon physically abutting the new tool unit.

Abstract: An access device is provided for access to a fluid tank, especially a fluid tank of a ship. The access device includes a drill, a thread-forming unit, a hollow body with an external thread and a connection plate. The hollow body is provided with a valve.

Abstract: Disclosed is the shape of a curvature of two or more pathways for a device having moving parts that cause movement of an object along those pathways, such that the device can locate or hold the object. In the embodiment, an apparatus is described that centers and optionally locks an object at a desired location. The applications for such a device are varied and can range from chucking a workpiece of varying diameters in a lathe, to centering a drone on a landing zone, to medical and scientific devices to capture and center objects to study, to moving atomic level objects using an electromagnetic field. The scope of this disclosure is the mathematics that defines the mirrored curvatures of each curved pathway and the positioning of the curvatures relative to each other, and the relative movement of the mirrored curvatures to cause the desired effect.

Abstract: The present application relates to a cutting tool (2), in particular a boring bar (2) for machining holes (16) separated from each other in an axial direction (4) by a given spacing distance (a), comprising a main body (10) extending in an axial direction (4) with an axis of rotation (R) with at least one cutting element (12), as well as with a number of guide elements (14) for guiding the main body (10) within a guide hole (16A), wherein the guide elements (14) for the axis of rotation (R) are separated by a guide radius (r1), wherein viewed in a cross-section, the main body (10) is divided into a functional region (19) and an eccentric region (20), wherein the cutting elements (12) and the guide elements (14) are arranged distributed over the circumference of the main body (10) over an angular region (?) of less than 180°.

Abstract: A vacuum suction pad capable of making it more difficult to separate a substrate when the substrate is held by vacuum suction, the vacuum suction pad 8 including: a pad main body 37 having a lower surface adhered to a stage 5 of a substrate holder 2; and a plurality of circular arc-shaped substrate holding convexities 38, provided on a top surface of the pad main body 37, for holding a substrate W attracted by vacuum suction to the top surface of the pad main body 37, wherein the substrate holding convexities 38 are arranged concentrically with the circular pad main body 37, and width W1 in a radial direction of the substrate holding convexity 38 located on a radially outer side among the plurality of substrate holding convexities 38 is narrower than width W2 in the radial direction of the substrate holding convexity 38 on a radially inner side.

Abstract: A flexible coupling for attaching a collet to a draw bar includes a draw bar having a first longitudinal axis and a first coupling portion. The first coupling portion includes two or more legs spaced apart from one another with each of the legs having first coupling surface formed thereon. The flexible coupling includes a collet having a second longitudinal axis and a clamping portion proximate one end of the collet. The collet includes a second coupling portion proximate a second end of the collet. The second coupling portion has a second coupling surface formed thereon and configured in a shape complementary to the first coupling surface so that the first coupling surfaces moveably engage the second coupling surface such that the first longitudinal axis and the second longitudinal axis are coaxial when an axial force is applied to the draw bar and the collet.

Abstract: A cutting tool comprises a tool body having a first end and a second end, and a longitudinal axis extending between the first end and the second end. The first end comprises two or more cutting portions, with each of the cutting portions comprising a cutting edge and a flank surface. Each cutting edge extends radially outwardly from a centre region of the first end to a perimetral edge of the first end, with the cutting edge being angled relative to the longitudinal axis. Each flank surface extends circumferentially from the cutting edge. Each of at least two of the two or more flank surfaces comprises an abrasive portion extending over at least a part of the respective flank surface and each abrasive portion comprises a plurality of abrasive features.

Abstract: A chuck (10) has a body (14), a plurality of jaws (22), and a rotatable nut (16). A sleeve (18) is rotatable between a first rotational position and a second rotational position with respect to the nut. An annular array of first teeth (84) are non-rotatable with respect to the body. One or more second teeth (63) are non-rotatable with respect to the nut and axially movable with respect to the body. When the teeth engage, they resist the nut's rotation in the opening direction. An engagement between the sleeve and the one or more second teeth moves the one or more second teeth out of engagement with the first teeth when the sleeve moves from the second rotational position to the first rotational position and moves the one or more second teeth into engagement with the first teeth when the sleeve moves from the first rotational position to the second rotational position.

Abstract: A method for producing a threaded hole in a workpiece with a thread tapping tool bit, which, at its drill bit tip, has a main cutting edge and a thread profile that trails in a thread tapping direction with at least one thread cutting tooth, wherein, in a thread tapping stroke, the main cutting edge produces a core hole, and, at the same time, the thread profile forms an internal thread at the inner wall of the core hole until a target thread depth is reached, and this is conducted with a thread tapping advance in the thread tapping direction and at a thread tapping rotational speed of the thread tapping tool bit synchronized therewith. After the thread tapping stroke, an oppositely directed reversing stroke is produced, in which the thread tapping tool bit is withdrawn out from the threaded hole in a reversing direction and, in fact, this is conducted with an opposite reversing feed.

Abstract: A tool for roughening a borehole surface. The tool includes a coupling portion for clamping the tool; a tool head for machining the borehole surface; and an extraction duct. The coupling portion is disposed at a first end of a tool shank and the tool head at an opposite, second end of the tool shank. The tool head has a cutter disposed circumferentially on the tool heat The tool head has a slit, which passes through from one side to the other and which, starting from an end face of the tool head, extends axially along a longitudinal axis of the tool. The extraction duct extends at least partly axially along the longitudinal axis of the tool for extraction of drilling dust. The extraction duct, starting from the end face of the tool head, extends inside the tool shank and discharges circumferentially into a connecting opening in the tool shank.

Abstract: A hydraulic chuck device includes a cylinder portion operated by pressure oil, a chuck opened and closed by operation of the cylinder portion, a pressure oil supply controlling pressure of pressure oil supplied to the cylinder portion, and a chuck controller controlling the pressure oil supply. When controlling the pressure oil supply to cause a jaw portion to perform a clamping operation, during movement of the jaw portion from an unclamping position to a preliminary position situated before a clamping position, the chuck controller supplies pressure oil set at a first pressure into a cylinder chamber for clamping to move the jaw portion quickly, and during movement of the jaw portion from the preliminary position to the clamping positon, the chuck controller supplies pressure oil set at a second pressure lower than the first pressure into the cylinder chamber for clamping to move the jaw portion slowly.

Abstract: A drill assembly and method is provided for enlarging an injector of a reactor. The drill assembly includes an elongated shaft attached to a piloted drill bit including a pilot portion distal from and extending colinearly with the elongated shaft and a cutting portion proximal the elongated shaft and positioned between the pilot portion and the elongated shaft, wherein the cutting portion includes at least one cutting edge extending radially from a center axis of rotation beyond an outer surface of the pilot portion; and a drive device adapted to rotate the elongated shaft about the axis of rotation. The method includes inserting the pilot portion into an injector; and cutting away a portion of an inner surface of the injector with the cutting portion.

Abstract: An expanding collet device can selectively clamp a workpiece to a workpiece support and can include an arbor, expandable collet and threaded screw actuator. The threaded screw actuator mechanism can include a support, drawbar, socket and a pair of thrust bearings. The drawbar can be connected to the collet and can extend into the support. An outer circumferential portion of the drawbar can oppose and be spaced away from an inner circumferential portion of the support. The socket can surround the drawbar and can include external threads engaging internal threads on the support such that rotation of the socket relative to the support displaces the socket in the axial direction. The socket, support, and drawbar can be configured such that rotation of the socket relative to the support displaces the drawbar in the axial direction such that the drawbar moves the collet between the released position the clamped position.

Abstract: A hole cutter assembly is operable to cut a plurality of different sized diameter holes in a work piece. The hole cutter assembly includes an arbor configured to connect to a power tool for rotation about an axis, a drill bit coupled to the arbor for rotation with the arbor, a first arm moveable relative to the axis, a first cutting blade coupled to the first arm and moveable with the first arm, a second arm moveable relative to the axis, and a second cutting blade coupled to the second arm and moveable with the second arm. The first and second cutting blades are selectively moveable relative to the axis to adjust a cutting diameter of the hole cutter assembly. The drill bit engages the first and second arms to inhibit movement of the first and second cutting blades relative to the drill bit.

Abstract: A cutter assembly for a boring bar may include a cutter body, a cutter-element carrier, and an adjustment assembly having an adjustment element. The cutter-element carrier may be configured to be slidingly received in a channel in the cutter-body. The cutter-element carrier may have a first surface transverse to the first line. The adjustment element may have a second surface defining a position of the cutter-element carrier in the channel when the second surface is in contact with the first surface. The adjustment element may be movable along a second line transverse to the first surface for adjusting the position of the cutter-element carrier in the channel. The cutter body may include first and second recess portions. First and second insert portions may be inserted into the first and second recess portions, respectively, and may define float travel-limits for the cutter body.

Abstract: A cutting tool 1 includes a cutting edge equipped with a helically curved groove 2 at a side outer periphery in the longitudinal direction, and a coolant passage pipe 3 extended internally and communicatively connected with ejection holes 4 of coolant arranged inside the groove 2 by way of a coolant passage pipe 31 branched from the coolant passage pipe 3 extended around a rotation center axis along the longitudinal direction or along the helically curved groove.