Abstract: The invention relates to a deep hole drilling method for producing a pipe with an inner profile which has at least one recess extending helically along the inner side of the pipe, wherein with a deep hole drilling machine a tool, comprising a basic body extending along a longitudinal axis and at least one cutting edge arranged on an outer circumference of the basic body, is pulled or pushed through the interior of the pipe while being turned about its longitudinal axis, so that the cutting edge completes a cut along a helical cutting line on the inner side of the pipe.

Abstract: A device for clamping a workpiece has a receiving head in a housing connected to a rotary drive with a rigid drive connection between a drive motor and the receiving head, radially adjustable clamping jaws connected to a clamping drive externally clamping the workpiece, and linear drives displacing the clamping jaws and forming the clamping drive driven jointly by a gear transmission with a central gear coaxial to the drive shaft of the receiving head by a separate drive motor. The central gear can be driven synchronously with the receiving head in the clamping position of the clamping jaws, and the rotary drive for the central gear comprises a rigid drive connection between its drive motor and the central gear or a superimposed gear comprising two input shafts drive-connected to the drive motor for the rotary drive of the receiving head and to the drive motor for the central gear.

Abstract: A drilling tool with improved structure to improve chips discharging performance. The drilling tool comprises a cutting insert 60 having a cutting edge 62 at the front end portion and a main body 10 mounted with the cutting insert 60, further, the drilling tool comprises a hollow discharge channel 12 formed inside the main body 10, and the discharge channel 12 has a curved surface 14 for guiding the chips S in a direction towards the base end portion opposite to the front end portion.

Abstract: An assembly for guiding a drill bit of a drill assembly comprises a chassis and a centering bushing, comprising an exterior conical portion and a central opening. The assembly further comprises a vacuum-cup bracket, coupled to the chassis and adjustably positionable relative to the chassis along a second axis. The assembly also comprises vacuum cups, coupled to the vacuum-cup bracket. The assembly additionally comprises a pressure foot, coupled to the chassis at the first end of the chassis and adjustably positionable relative to the chassis along the second axis.

Abstract: A rotary cutting tool includes a replaceable cutting head and a tool holder. The replaceable cutting head includes a forward cutting portion and a rearward mounting portion. The mounting portion includes a male coupling member that includes an external thread defined by external inner and outer cylinders. The external thread has concavely curved external thread roots which each merge with a respective straight external loaded surface at a first external root point. The first external root point is spaced apart from the external inner cylinder by a first external radial distance. The first external radial distance is greater than a third and less than two thirds of the external thread height. The tool holder includes a female coupling member that includes an internal thread. When the rotary cutting tool is in a locked position, the external thread is threadingly engaged with the internal thread.

Abstract: An adapter sleeve is described for inserting into an expansion chuck of a cutting device with a substantially cylindrical body that defines a longitudinal axis (L) of the adapter sleeve and a seat area for a cutting tool. The body comprises an axial front end and an axial rear end opposite the front end by means of which the adapter sleeve can be inserted into the expansion chuck of the cutting device. An outlet element is provided at the axial front end through which a coolant can be discharged toward the cutting tool. At least one cooling line extends along the body up to the outlet element and comprises a body line section and an outlet element section. At least one channel-like outlet nozzle is formed in the outlet element and is in fluidic connection with the at least one cooling line. The flow cross-section of the cooling line decreases or remains the same toward the axial front end. In addition, a cutting device is described.

Abstract: A known rotary tool holder (10) comprises a rotary tool gripper (11) and a non-rotary part (16) presenting a flat front wall (18), the rotary tool gripper projecting from the flat front wall and comprising a shaft segment (15) having two shaft flats (12, 13). A kit to assist in the manual change of a tool from such a rotary tool holder comprises a forked holding element (20) provided with two fingers (22, 23) that are suitable to be fitted by their inside on the two shaft flats, and a locking plate (30) that comprises a recess (31) and is suitable to be fixedly mounted on the front wall with the recess facing it, said recess being configured to house the two fingers fitted on the two shaft flats when the locking plate is mounted on the front wall, the recess extending across the locking plate and being delimited by two steps (32, 33) against which the two fingers can be fitted by their outside.

Abstract: A clamping assembly includes a base member having an internal bore, a lock rod within the internal bore of the base member and moveable in a forward direction and rearward direction between an unlocked position and a locked position, a crank wheel having an axis of rotation, and a linkage coupled to the lock rod and coupled to the crank wheel at a position radially offset from the axis of rotation of the crank wheel.

Abstract: A clamping device for clamping an article or workpiece to be balanced includes a clamping apparatus for clamping the article. The clamping apparatus has an adjusting device for adjusting the clamping diameter of a clamping body of the clamping apparatus for clamping the article on a placement surface. The clamping body has a disk-shaped spring element sprung in radial direction with a centrally disposed clearance forming at least one spring element cone. The clamping body also has a clamping element inserted into the clearance and having at least one corresponding clamping element cone. The adjusting device has an actuating device for displacing the clamping element relative to the spring element, for moving the cone surfaces of the clamping element cone and the spring element cone relative to one another and for consequently clamping and/or unclamping the spring element in radial direction by the cone surfaces.

Abstract: Provided is an ultrasonic vibration processing device which can suppress vibration of components due to an ultrasonic vibrator and can perform processing using ultrasonic vibration in a preferable manner; the ultrasonic vibration processing device includes: a housing (10); an ultrasonic vibrator (20) including a horn portion (21A) to which a tool holder (70) is detachably attached and a piezoelectric element (23), the ultrasonic vibrator having a rear end located at a node of ultrasonic vibration and being supported inside the housing (10) so as to be rotatable; a connecting portion (30) stored in the housing (10) so as to be rotatable together with the ultrasonic vibrator (20); a motor (40) connected to the connecting portion (30); and a non-contact power supply unit (50) including a primary transformer (51) and a secondary transformer (52), the primary transformer (51) being fixed to the housing (10) and including a primary coil (51B) that receives high frequency power from an external power supply, the sec

Abstract: A reamer includes a core, a plurality of outer-circumference cutting edges provided on an outer circumference of the core and made of a hard tool material, and a margin provided on a rear side of each the plurality of outer-circumference cutting edges in a rotational direction. A distance from an axis of rotation to a position of a center of gravity of the reamer is greater than 0.01 mm and not greater than 0.5 mm.

Abstract: A tapping tool for producing a threaded bore having an internal thread in a workpiece. The tapping tool has a main cutting edge on its drill tip and a thread profile trailing in a tapping direction. The method has a tapping stroke in which the tapping tool is driven into the workpiece at a tapping feed rate in the tapping direction and at a tapping speed synchronized therewith and the main cutting edge of the tool produces a core hole bore and the tool thread profile forms an internal thread on the inner wall of the core hole bore. Chips are produced in the tapping stroke, which are conveyed out of the threaded bore in a chip removal direction opposite to the tapping direction and collide with thread flanks of the internal thread facing toward the chips to be removed.

Abstract: A refacing tool includes a feed assembly that holds a first set of cutters positioned for refacing the inner shoulder of a pin or box end of a tubular and a second set of cutters positioned for refacing the outer shoulder of the pin or box end. The axial spacing between the first set of cutters and the second set of cutters is fixed and determined by the geometry of the feed assembly. The refacing tool can simultaneously reface the inner shoulder and the outer shoulder, as well as chamfers.

Abstract: An object of the present invention is to obtain information corresponding to information, which is readable by sight, but no longer visible. The present invention provides a chuck mechanism comprising: a chuck body including an installation surface and a side surface; and a master jaw provided on the installation surface of the chuck body and configured to move in a radial direction of the chuck body, wherein a first marking is provided on the installation surface of the chuck body, the first marking is product information of the chuck mechanism, the product information has a readable form by sight, and at least one second marking is provided on the installation surface or the side surface of the chuck body, the second marking is information including at least the product information of the first marking, and the information of the second marking has a coded form.

Abstract: It is described a method for reconditioning a damaged thread (8) of a transmission (1) of a hover-capable aircraft; the damaged thread (8) being arranged inside a first hole (23a) of the transmission (1); wherein the method includes the following steps: i) centering a tool (20) on the first hole (23a); ii) inserting a first tool (25) inside the tool (20) centred on the first hole (23a) and removing the damaged thread (8) through the first tool (25); iii) inserting a second tool (26) inside the tool (20) and creating a new thread (16) inside the first hole (23a) having a diameter larger than the one of the damaged thread (8); iv) screwing an insert (61) having a thread inside the new thread (16), so that the insert (61) engages the first hole (23a) and defines a reconditioned thread (8?); and v) keeping the transmission (1) mounted on the hover-capable aircraft during steps i), ii), iii), iv).

Abstract: This invention includes a drill guide (drill depth stop and alignment tool), canting base attachment, and self-aligning dowel jig attachment that allows users to drill holes to prescribed depths into flat work surfaces using various sizes of twist and auger bits while eliminating marring and reducing wood splintering. The canting base attachment allows users to drill holes to prescribed depths and at variable angles into flat surfaces and both large and small cylinders with no free ends using various kinds and sizes of drilling tools without marring. The dowel jig attachment allows users to drill dowel holes to prescribed depths in edges and faces of work pieces that are evenly spaced apart by numerous gauged distances and at infinitely adjustable distances from edges. This invention has drill press-like capabilities and can be used in fields and shops.

Abstract: A drill may be extended from a first end to a second end and may include a cutting part. The cutting part may include a cutting edge, a flute, an end surface and a connection surface. The flute may be extended from the cutting edge toward the second end. The end surface may be located closer to the second end than the flute. The connection surface may be located between the flute and the end surface. The connection surface may include a first portion, and a second portion located closer to an outer periphery of the cutting part than the first portion. A length in the direction along the rotation axis on the second portion may be smaller than a length in the direction along the rotation axis on the first portion in a side view orthogonal to the rotation axis.

Abstract: The present disclosure discloses a cutting method for an aluminum alloy casting, and a trimming die. The cutting method for the aluminum alloy casting includes the following steps of: drilling a part to be cut off of the aluminum alloy casting by multiple annular drills, and withdrawing the annular drills when the annular drills drill to a preset position; and separating multiple scraps to be separated from the aluminum alloy casting by the trimming die.

Abstract: A rotary tool according to a non-limiting aspect has a body that has a rod shape extending from a first end to a second end and is rotatable about a central axis. The body has a first cutting edge positioned on the first end, a first flute extending from the first cutting edge toward the second end, a second cutting edge being on a side of the second end and on a side of an outer periphery with respect to the first cutting edge and being positioned away from the first cutting edge, and a second flute, extending from the second cutting edge toward the second end and being positioned along the first flute. The second flute has a projecting portion extending from a side of the first end toward a side of the second end.

Abstract: A newly configured centerpoint drill and a drill attachment device that can be attached to a conventional cordless drill include configurations that require a user's hand to be in direct alignment with the keyless chuck of the drill to enable a user or operator to apply maximum pressure or force during use of a drill to reduce time and effort spent by a user/operator.