Abstract: A drill bit having an interior canal for liquid nitrogen to pass longitudinally through the body of the drill bit. The canal has, on the side of a cutting edge of the drill bit, at least one liquid nitrogen ejection duct that opens near the cutting edge which is formed by an insert made with polycrystalline diamond fixed to the body of the drill bit. A device for drilling a metal-composite stack includes the drill bit, a liquid nitrogen production unit and a distribution network to distribute the liquid nitrogen. The device drills through a metal-composite stack in a single pass of the drill bit. The liquid nitrogen at cryogenic temperature is conveyed close to the cutting edge, at least while the cutting edge is in contact with the metallic material.

Abstract: A clamping assembly for a clamping device for clamping of a workpiece or tool or a toolholder on machine component with a clamping cone movable axially via a tension rod and several clamping elements arranged spaced from each other in the peripheral direction on the outside of the clamping cone, which can be moved between a radially outer clamped position and a radially inner released position by axial movement of the tension rod. The clamping cone includes two parts movable opposite each other in the axial direction.

Abstract: A numerically controlled machine tool that can accurately control a position of a machining member for machining a workpiece. The numerically controlled machine tool comprises: a first post member installed on a main body slidingly in a left/right direction; and first, second and third horizontal rails installed on the main body lengthily in the left/right direction and respectively coupled to two points of the rear surface and one point of the front surface of the first post member for guiding sliding of the first post member.

Abstract: A progressive cold forming machine and a robot for automatically changing a cutoff cassette, tooling cassettes, a transfer slide and transfer cam. A loading area adjacent the machine and robot has provisions for supporting a tooling cassette pallet and a transfer slide and camshaft pallet and a holding area for temporarily receiving some of the componentry being exchanged.

Abstract: The present invention relates to a system, an apparatus and a method for providing tools on a machine tool. The system includes a first tool magazine for accommodating a plurality of tools; a first feeding device which is adapted to remove tools from the first tool magazine and feed them to the spindle; at least one second tool magazine for accommodating a plurality of tools; a second feeding device which is adapted to remove tools from the second tool magazine and provide them at a predetermined transfer position; and a transfer apparatus which is adapted to feed tools removed from the second tool magazine to the first tool magazine, with the result that the second tool magazine serves as a supply magazine for the first tool magazine.

Abstract: To provide a tool transfer apparatus including gripping force measuring unit for tool holding unit of a tool accommodation apparatus and a machining system including the tool transfer apparatus, a handling robot can perform operation of detaching a tool from a grip positioned at a tool attachment/detachment position of a tool magazine in a machine tool and transferring the tool to a tool stocker, and operation of transferring a tool from the tool stocker and attaching the tool to a grip positioned at the tool attachment/detachment position of the tool magazine. A hand portion of the handling robot is provided with a force sensor, which can detect a load applied to the hand portion. Also, a control apparatus of the handling robot and a control apparatus of the machine tool are connected via a data cable capable of transmission and reception of information.

Abstract: A milling system for milling a track surface with at least one rotatable milling plate. A modular blade system for each milling plate allows individual blades to be removed and replaced when an individual blade becomes dull or broken. The blade system also allows the milling plates to be oriented in both Type 2 and Type 3 configurations depending upon track surroundings and the presence of encumbrance. The milling plates can be mounted to a positioning assembly for adjusting the relative distance between the milling plate and the track surface as well as the angle at which the milling plate engages the track surface. The milling system can include a depth guide so as to physically prevent the milling plate from cutting too deeply into the track surface.

Abstract: The invention relates to a drill tip (2) comprising a base body (6) having chip flutes (22A,B) and extending in the axial direction along an axis of rotation (8) and having at least two main cutting edges (14A,B) on the front face thereof extending outward in the radial direction to a cutting corner (16A,B). Seen in cross section, the base body is asymmetric relative to rotation about the axis of rotation (8) at the height of the cutting corner (16A,B). The cross section of the base body is simultaneously designed having symmetrical spacing from the main cutting edges (14A,B). The drill tip (2) is in particular designed as an interchangeable modular part of a modularly designed drill tip (5). A drill base body (4) in which the drill tip (2) can be inserted can therefore in turn be designed symmetrically.

Abstract: A tool changer includes a holding member having a tool change arm, a rotating mechanism for rotating the holding member, a forward/backward moving mechanism for moving the holding member forward and backward, and a controller controlling the mechanisms. A zero return controller determines whether the tool change arm is holding tools. When it is not holding tools, the tool change arm is rotated to a predetermined non-interference angle, the tool change arm is translated to a forward/backward movement zero point, and the tool change arm is rotated to a rotation zero point. When it is holding tools, the tool change arm is translated to a forward end, the tool change arm is rotated to position it on an expected path, and the tool change arm is moved along the expected path, thereby moving the tool change arm to the rotation zero point and the forward/backward movement zero point.

Abstract: A cutting insert has a cutting corner, having a bisector, located on a top surface of the cutting insert. A chip-control arrangement is located at the cutting corner. The chip-control arrangement includes a projection protruding from the top end face and that extends longitudinally in a direction transverse to, and to opposites sides of, the bisector. The chip-control arrangement also includes a protrusion protruding from the top end face and comprising a protrusion ridge that extends from the projection towards a corner cutting edge at the cutting corner.

Abstract: The present invention discloses a device for assembling products in a die. The device comprises a pushing portion and an assembling portion. The pushing portion comprises a pushing block (11), a pushing spring (10) and a pushing wedge (9) wherein the pushing block (11) is connected with the pushing spring (10), the pushing wedge (9) is arranged above the pushing block (11) and is in wedge-shaped connection with the pushing block (11). The assembling portion comprises an assembling wedge (6), a transmission wedge (4) and an assembling male die (5), wherein the transmission wedge (4) is arranged above the assembling male die (5) in wedge-shaped connection and both of them are arranged in the lower die base (2), the assembling wedge (6) is arranged above the transmission wedge (4) in wedge-shaped connection while in contact.

Abstract: The present invention discloses a method for assembling products in a die by the aid of a device for assembling products in a die. The device for assembling products in the die comprises a pushing portion and an assembling portion. The pushing portion comprises a pushing block (11), a pushing spring (10) and a pushing wedge (9), wherein the pushing block (11) is connected with the pushing spring (10), and the pushing wedge (9) is arranged above the pushing block (11) and is in wedge-shaped connection with the pushing block (11). The assembling portion comprises an assembling wedge (6), a transmission wedge (4) and an assembling male die (5), wherein the transmission wedge (4) is in wedge-shaped connection with the assembling male die (5), and the transmission wedge (4) and the assembling male die (5) are arranged in a lower base (2).

Abstract: A turning and thread-rolling machine with a pre-compression device includes a fixing base on which the pre-compression device, a fixing mechanism, a guiding base, a processing mechanism assembly, and a control unit are provided, wherein the pre-compression device includes a carrier and at least two cold-rolling heads in order to form by compression a pre-compressed annular groove in a portion of an unprocessed rebar that is adjacent to one end thereof, and, under the control of the control unit, the fixing mechanism clamps the rebar, and the guiding base displaces the processing mechanism assembly to the end of the rebar to perform turning and thread rolling sequentially, thereby processing the end of the rebar into a coupling end. The pre-compressed annular groove facilitates on-site inspection of thread quality and prevents the thread-rolling dies in the processing mechanism assembly from contact with, and hence damage by, the ribs on the rebar.

Abstract: An apparatus configured to convert a rotary machine to a non-rotary machine is provided. The apparatus may include a tool body that engages a rotary head of a CNC mill and a rotation restraint member that is fixed at a stationary position relative to a rotational axis of the rotary head. An arm of the tool body may engage the rotation restraint member to prevent rotation of the tool body. A cutting tool may be coupled to the tool body such that rotation thereof is also fixed. The arm of the tool body may include an elongated aperture that allows for slight pivoting of the tool body and the cutting tool to facilitate chip removal and cutting in opposing directions. Related methods are also provided.

Abstract: The wear status of a micro-endmill tool may be inferred by monitoring the chip production rate of the tool in operation. Chips may be extracted from a work area, captured on an adhesive surface, imaged, and counted to determine the chip production rate. When the rate of chip production falls, the feed rate of the micro-endmill may be modified to a level suitable for the current state of tool wear. In this manner, costly and inconvenient work stoppages to evaluate the wear status of a tool are eliminated.

Abstract: A method for manufacturing a comb-shaped toothpick structure includes cutting a wooden block by a rotary cutter having a plurality of dies to form a plurality of toothpick shapes arranged in a row. Each toothpick shape includes a top edge formed by a cutter groove between two dies. Each toothpick shape further includes at least one stepped portion formed by at least one stepped cutting portion of one of the dies. The bottoms of the toothpick shapes are connected to each other. A bottom groove is located between two adjacent toothpick shapes and is formed by a blade of one of the dies. The toothpick shapes is further cut by partial cutting at an end of the toothpick shapes to form a front end of each toothpick shape. The toothpick shapes are cut from the wooden block to obtain a toothpick structure including a plurality of toothpicks.

Abstract: A milling tool has a basic body rotatable about a center axis, and including an outside, which includes a pair of opposite front and back sides, as well as a peripheral envelope surface. The body is equipped with a plurality of replaceable cutting inserts. The basic body includes an inner hollow space having an internal limiting surface, in which there collectively mouth a plurality of bores. The bores also mouth in the outside. Each cutting insert is mounted on an outer end of an ejector, which is rectilinearly movable in the individual bore and has an inner end accessible from the hollow space, and which interacts with a compressible force generator, to pull the same into the bore. By mounting the cutting inserts on ejectors, which simultaneously are accessible from a common hollow space, the cutting inserts can be replaced fast and easily, and possibly also be indexed.

Abstract: A tip for twist drill, comprising a super-hard structure joined to a substrate at an interface boundary coterminous with an end of the substrate, the super-hard structure comprising sintered polycrystalline material comprising super-hard grains, the super-hard structure defining a super-hard end surface opposite the interface boundary and a plurality of cutting edges configured for boring into a body in use; the super-hard end surface including a center point or chisel edge, and comprising a plurality of surface regions configured such that respective planes tangential to each of the surface regions are disposed at substantially different angles from the axis of rotation of the tip in use. Precursor constructions for use in manufacturing the tips as well as methods for making the precursor constructions and the tips are disclosed.

Abstract: In a steady rest (1) for centring a rotationally symmetrical workpiece (2) in the space, consisting of: two housing halves (4, 5) arranged at a distance from one another and firmly connected together, a middle steady rest arm (6) arranged between the two housing shells (4, 5) that is mounted in the housing shells (4, 5) by means of an actuation piston (7) so as to be moved in an axial direction (3) towards the workpiece (2), and two outer steady rest arms (11, 12) that are in a driving connection with the middle steady rest arm (6) by means of a guide slide (13) which has a control track (14) on two opposite outside sides, on which a roller (16) attached to the free ends (15) of both outer steady rests (11, 12) is arranged which roll along the control track (14), workpieces (2) with different diameters should be held in the space.

Abstract: Provided is a cutting edge position adjustment mechanism for moving a cutting edge member mounted on a tool body with respect to the tool body to adjust the position of a cutting edge. The cutting edge position adjustment mechanism is equipped with a shaft member that extends between the tool body and the cutting edge member and threadably engages with the tool body and a nut member that threadably engages with the shaft member and abuts against the cutting edge member; a first screw section that threadably engages with the tool body and a second screw section that threadably engages with the nut member are provided coaxially on the shaft member at different positions along the direction of an axis line of the shaft member; and the thread pitch of the first screw section and the thread pitch of the second screw section are different from each other.