Abstract: A lower drill tool that is structurally configured to receive a bracket, and, to cooperate with an upper drill tool having a pair of spaced apart drill bits. The lower drill tool has part receiving surface, a pair of spaced apart drill bores, a central bore, a centering nub and a biasing member. The drill bores extend downwardly away from the part receiving surface. The central bore is between the drill bores and extends downwardly away from the part receiving surface. The centering nub is slidable within the central bore, and has an upper tip extendable beyond the part receiving surface, positionable between an extended position and a partially retracted position. The upper tip has a conical configuration. The biasing member is positioned within the central bore and biases the centering nub toward the extended position. A drill system and a method are also disclosed.

Abstract: The present invention relates to a built-in type spindle, and more particularly, to a built-in type supersonic spindle, which includes a housing having a built-in spindle unit therein and a supersonic vibrator pressing the built-in spindle unit in order to enhance machining accuracy and reduce a damage of a bearing by vibrating a spindle and the bearing at the same time, and an excitation method using the built-in type supersonic spindle.

Abstract: The invention relates to a drill comprising a body which extends along a longitudinal axis (L) from a rear side (B) to a front side (F), wherein the body comprises a main cutting edge on the front side (F), wherein the body comprises at least one guide bevel which extends in axial direction (A) and toward the front side (F), wherein, toward the front side (F), the guide bevel has an end section which is tapered. The invention further relates to a method for producing such a drill.

Abstract: An apparatus for holding and releasing a pin in a controlled manner comprises a base, a pin holding element supported at the base, a plurality of rod-shaped release elements made of a shape memory alloy and supported at the base, a holding force application device supported at the base for applying an elastic holding force, and a force transfer element. The force transfer element is subjected to the elastic holding force and, against the elastic holding force, supported at the base via a parallel arrangement of the pin holding element and the release elements. The release elements are arranged with radial play in blind holes in the base, which are arranged around the pin holding element. The pin holding element is deactivatable by heating up the release elements beyond a transition temperature of their shape memory alloy and by a resulting recovery of the release elements to straight memory shapes.

Abstract: A combination tool including a tool holder that extends along a tool rotational axis that defines an axial extension, an inner cutting tool for machining a first, central hole region and an outer, sleeve-shaped cutting tool for machining a second hole region radially outwards relative to the first hole region.

Abstract: A tool tip is integral with or removably secured to a tool body and configured to machine a metal object. The tool tip has a tool tip diameter, a rotational axis and at least one coolant duct. The tool tip includes at least one major cutting edge formed at an intersection of a rake face and a first major flank. The rake face forms part of a chip flute. The coolant duct is configured to be in flow communication with discharge orifices located exclusively in the tool tip. The tool tip has an arrangement, such as a row of two or more discharge orifices located exclusively in the rake face of a major cutting edge. The arrangement extends at a non-zero angle relative to the rotational axis.

Abstract: A thread cutting insert for cutting threads includes a plurality of cutting teeth disposed along a cutting portion, each cutting tooth is provided with an allocated chip former, and the chip formers are provided on a rake face of the thread cutting insert. The shape of at least two cutting teeth is different from each other. At least one cutting tooth along the cutting portion is provided with an allocated chip former the shape of which is adapted to the shape of that cutting tooth which, with respect to an order of engagement during cutting operation, precedes the subsequent cutting tooth along the cutting portion such that the at least one chip former has a shape adapted to the cross-section of chips encountered by it. A set of at least two thread cutting inserts, a thread cutting tool and a method for cutting threads, are also provided.

Abstract: A key duplicating machine and duplicating process are disclosed. The key duplicating machine comprises a base, a main axis processing device, a detecting device, a feeding device, a clamping device and a drive device. The base comprises a vertical plate and a horizontal plate, separates the horizontal plate into a front part and a rear part. The main axis processing device and the detecting device are both flexibly connected to the vertical plate and arranged on the side facing the front part. The base separates the processing area from the drive area so that processing residues produced in the processing area will not easily invade the drive area, ensuring that the drive area will be clean and free from contamination, reducing the probability of damage to the motor, guide rail and other structures in the drive area, and increasing the stability and lifespan of the key duplicating machine.

Abstract: A quick-release tool connecting rod is provided, including: a rod body, a quick-release mechanism and a second sleeve member. The rod body includes an inner space extending in an axial direction and a through hole communicated with the inner space. The quick-release mechanism includes a push rod received within the inner space, a locking member disposed within the through hole and a first sleeve member sleeved to the rod body. The first sleeve member is movable relative to the rod body in the axial direction to drive the push rod to move. The second sleeve member is co-movably sleeved to the first sleeve member, and the first sleeve member is partially embedded within an inner peripheral wall of the second sleeve member. The first sleeve member has a first hardness, and the second sleeve member has a second hardness which is smaller than the first hardness.

Abstract: A chuck (10) is provided that includes a plurality of jaws (20) and a body (30) configured to rotate with a drive spindle of a power driver. The chuck (10) may also include a nut (80) comprising nut teeth (82). The nut (80) may be operably coupled to the jaws (20) and configured to move the jaws (20) relative to the body (30) in the opening or closing direction. The chuck (10) may also include a clutch (100) comprising clutch teeth (102). The clutch (100) may be configured to move between a working position and a jaw actuating position. In the working position, the clutch teeth (102) may be engaged with the nut teeth (82) to prevent movement of the nut (80) relative to the body (30), and, in the jaw actuating position, the clutch teeth (102) need not be engaged with the nut teeth (82) and the nut (80) may be free to move relative to the body (30).

Abstract: A testbed device includes high performance actuators, a video microscopy system and a plurality of high resolution, throughput sensors adapted or configured for collecting data that may be used in predictive modelling of machine processes.

Abstract: A zero-point clamping device for centered locking of an object with repeat accuracy, the device comprising: a housing, a receiving opening worked into the housing having a centering axis, at least two clamping slides mounted axially displaceably in a bore provided in the housing, and an actuating element for moving the clamping slides, one axis of rotation of the actuating element running tangentially and at a distance from the receiving opening to enable a reliable, permanent and repeatable fixing of a large number of workpieces and being extremely compact. This is achieved with two spaced-apart threads incorporated in the actuating element, the respective threads of which have identical pitches and are inclined in opposite directions, and a drive pin inserted in each thread in a driving connection with the thread such that the drive pins can be moved along the axis of rotation of the actuating element.

Abstract: A tool for removing a coating from an end of a coated conduit comprising a metallic conduit having an outer diameter and a polymeric material applied over the outer diameter thereof is provided. The tool comprises: a guide member having an outer diameter sized to fit within an internal diameter of the metallic conduit; and a cylindrical cutting member having a substantially closed first end rotatably connected to an arbor, a substantially open second end, and a plurality of teeth elements. The cylindrical cutting member has an inner diameter that is substantially equal to the outer diameter of the metallic conduit such that when the cylindrical cutting member is rotated, the teeth elements remove the polymeric material from the outer diameter of the metallic conduit.

Abstract: A machine tool comprises a tool carrier, e.g. in the form of a turret disc (7) that is provided with receptacles (8) for tool holders (9), wherein each tool holder and tool carrier comprise support surfaces associated to each other and devices for fixing the tool holder at the tool carrier. At least one clamping element is provided at the tool carrier (7) that is adjustably supported between a clamping position and a release position in a direction transverse to a tie rod of a tool holder arranged on a slider (22) receptacle of the tool carrier. The clamping element is provided with a first clamping surface (24) that can be brought into engagement with a second clamping surface (35) at the tie rod of the tool holder in a self-locking and releasable manner.

Abstract: A machine reaming tool includes a base body with a plurality of insert receivers with cutting inserts that are inserted therein. The cutting inserts are inserted into insert receivers that each form a linear guide of the cutting inserts in a direction orthogonal to a rotation axis of the machine reaming tool. The linear guide is a prismatic sliding guide such as a dovetail guide. In particular, the dovetail guide is designed asymmetrically.

Abstract: A variable-frequency ultrasonic machining system for a computer numerical control milling machine including a cutting force detection unit, a temperature sensing unit and a processor. The processor receives sensing signals of the cutting force detection unit and the temperature sensing unit, processes the received sensing signals according to a set program, and sends control signals to an ultrasonic drive power supply and a corresponding servo motor, respectively. By adjusting the ultrasonic vibration frequency or the frequency of the frequency converter of the CNC milling machine in the machining process, the system ensures the continuity of ultrasonic-assisted milling of a part with a complex curved surface in case of uneven cutting allowance, and improves efficiency of ultrasonic machining.

Abstract: A pipe spinning power drill accessory a stem, shaft, first knurled assembly, second knurled assembly, first state, and second state. The first knurled assembly and the second knurled assembly are each cylindrically shaped. The first knurled assembly is centrally affixed to the stem. The shaft is centrally affixed to the first knurled assembly opposite the stem. The second knurled assembly is centrally affixed to the shaft opposite the first knurled assembly. The first knurled assembly and the second knurled assembly each selectively expand laterally. In the first state, the first knurled assembly and the second knurled assembly are each not laterally expanded. In the second state, at least one of the first knurled assembly and the second knurled assembly are laterally expanded. The stem is configured to be inserted into a chuck of a power drill. The stem is cross-sectionally hexagonally shaped and includes a region of decreased diameter.

Abstract: A rotary cutter for cutting damaged threads of a bolt includes a body rotatable about a rotating axis. The body includes an inner periphery delimiting a conic cutting space. The body further includes at least one cutting blade, an evasive groove, an evasive portion, a scrap discharge groove, a scrap guide groove and a scrap discharge orifice on the inner periphery delimiting the cutting space. The at least one cutting blade forms a ridge. The evasive groove and the scrap discharge groove are respectively located on a rear side and a front side of the at least one cutting blade along a circumferential direction of the inner periphery of the body. The scrap guide groove extends between the evasive groove and the scrap discharge orifice.

Abstract: A deburring chamfer tool has a main body including a working end for engaging a workpiece to be deburred. The working end is of a conical shape and has a first and a second cutting edge respectively extending lengthwise with reference to different slant reference lines which delimit the conical shape. Each of the first and the second cutting edges slope from a first end adjacent to the vertex of the conical shape to a second end adjacent to the base of the conical shape in a first length and a second length respectively. The second length is smaller than the first length.

Abstract: An adjusting device 17 for fine adjustment of a cutting support 14, which is adjustable on a basic body 12 of a cutting tool 10, relative to the basic body 12, with an adjusting screw 63 which determines the position of the cutting support 14 relative to the basic body 12. The adjusting device 17 comprises a threaded bushing 61 with which the set screw 63 is screwed and which has a wall segment 66 which is elastically deformable transversely to the socket axis 70, and a pressure element 64 arranged laterally of the threaded bushing 61 which presses the wall segment 66 against the set screw 63.