Abstract: A gear manufacturing machine for which a machining tool detachably attached to a tool spindle is exchanged by means of an automatic tool changer, wherein the automatic tool changer is provided with: tool holding means for detachably holding a machining tool to be exchanged; moving means for moving the tool holding means in a direction parallel to the axial direction of the tool spindle; and rotating means for rotating the tool holding means.

Abstract: Provided are an electromagnetic-induction-type position detector which can be small sized and in which interference errors do not occur, and a detection method. The present invention has: a stator having first and second main patterns and first and second sub-patterns; and a rotor having a main pattern part and a sub-pattern part, in which adjacent comb-shaped electrodes of the main pattern part and the sub-pattern part are connected to form a single loop; and when an excitation electric current is supplied to the first and second main patterns, an excitation voltage excited in the main pattern part is detected in the first and second sub-patterns via the sub-pattern part, and when an excitation electric current is supplied to the first and second sub-patterns, the excitation voltage excited in the sub-pattern part is detected in the first and second main patterns via the main pattern part.

Abstract: Provided are: a screw-shaped grindstone for grinding gears that has a simple configuration and is capable of grinding gears with high precision; and a method for grinding gears. The screw-shaped grindstone (20) for grinding gears, which grinds a workpiece (W1) by rotating while meshing with the workpiece (W1), comprises a screw-shaped grindstone (21) that grinds the workpiece (W1), and a screw-shaped grindstone (22) that is linked to the screw-shaped grindstone (21) on the same axis, and grinds the workpiece (W1), which has been ground by the screw-shaped grindstone (21). A plurality of grinding ranges (L1, L2) that are sectioned at prescribed lengths in the width direction of the grindstone are established with respect to the screw-shaped grindstones (21, 22), and each grinding range (L1, L2) of the screw-shaped grindstones (21, 22) serves as the range of use per workpiece (W1).

Abstract: This device is provided with: a main shaft (20) onto which a tool (100) is detachably mounted; a rod (30) slidably supported by the main shaft (20) and configured to attach or detach the tool (100) to or from the main shaft (20) through a sliding action; a fluid channel (32) formed in the rod (30); fluid feed device (51, 70) configured to feed a fluid into the fluid channel (32); a plurality of fluid channels for seating detection (24) for detecting when the main shaft (20) and the tool (100) are in a seated state, the fluid channels for seating detection (24) being formed in the main shaft (20) so as to communicate with the fluid channel (32) when the rod (30) is positioned at a first position; and a plurality of fluid channels for cleaning (25) for cleaning seating portions of the main shaft (20) and the tool (100), the fluid channel for cleaning (25) being formed in the main shaft (20) so as to communicate with the fluid channel (32) when the rod (30) is positioned at a second position different from the f

Abstract: A room-temperature bonding apparatus includes a bonding chamber, an upper-side stage mechanism to support an upper-side wafer to be movable in an upper and lower direction in the bonding chamber, and a lower-side stage mechanism configured to support a lower-side wafer in a horizontal plane in the bonding chamber. The lower-side stage mechanism includes a carriage having a lower-side wafer holding section for holding the lower-side wafer, an elastic guide connected to the carriage to support the carriage, a positioning stage for finely moving the lower-side wafer holding section, and a fine movement mechanism for finely moving a lower-side wafer holding section, and a carriage support base. The elastic guide supports the carriage elastically deforms so as for the carriage to contact the carriage support base when the upper-side wafer contacts the lower-side wafer and a load is applied to the carriage into an upper and lower direction by the upper-side stage mechanism.

Abstract: The present invention improves the calculation accuracy of the phase of gear teeth. This method for calculating a phase of teeth of a gear, the gear having Z number of teeth, includes: a gear teeth amplitude signal acquiring step of acquiring a gear teeth amplitude signal (S(c)) corresponding to at least one revolution of the gear, the gear teeth amplitude signal (S(c)) being formed by an association of an angle (c) of the gear and a value corresponding to irregularities on an outer circumference of the gear within the angle (c); a phase calculating step of calculating a phase (B) of an angular pitch (P) of the gear in accordance with the number (Z) of teeth when the gear teeth amplitude signal (S(c)) is subjected to frequency decomposition; and a gear meshing angle calculating step of calculating a gear meshing angle on the basis of the phase (B) detected by the phase calculating unit.

Abstract: A room temperature bonding apparatus includes a first beam source, a second beam source, and a press bonding mechanism. The first beam source emits a first activation beam that irradiates a first surface of a first substrate. Independently from the first beam source, the second beam source emits a second activation beam that irradiates a second surface of a second substrate. The press bonding mechanism bonds between the first substrate and the second substrate by contacting between the first surface and the second surface after the first surface is irradiated with the first activation beam and the second surface is irradiated with the second activation beam. Thus, a plurality of the substrates made of different materials is appropriately bonded.

Abstract: The present invention provides a surface-coating material capable of exhibiting high peeling resistance and high chipping resistance. A surface-coating material is provided with a base material, a bottom layer, and a top layer. The base material comprises high-speed tool steel or cemented carbide. The bottom layer is provided on the surface of the base material and comprises at least one nitride of titanium, aluminum, chromium, and zirconium. The top layer is provided on the surface of the bottom layer and is formed by alternatingly laminating an A layer and/or a B layer. The A layer comprises a nitride of aluminum, chromium, and silicon. The B layer comprises a nitride of aluminum, chromium, and yttrium.

Abstract: Provided is a gear grinding machine which can dress a grinding stone while a gear is held attached to the machine regardless of the size of the gear. To this end, the gear grinding machine (1) engages and mutually rotates a work (W) and the grinding stone (17) to thereby grind the work (W), wherein the gear grinding machine is equipped with a turning table (22) which holds the work (W) and rotates around a work rotating shaft (C), and a pivot table (31) which is pivotably supported around the work rotating shaft (C); and a dresser (40) which is capable of dressing the grinding stone (17) is provided on the pivot table (31), the pivot table (31) being pivoted to move the dresser (40) between a dressing position (D1) and a retreat position (D2).

Abstract: Provided are a gear machining apparatus and a gear machining method with which the surface roughness, in a tooth profile evaluation range, of the surfaces of the teeth of a gear can be improved. This gear machining apparatus (1) machines shapes a gear (4) by machining a workpiece (4) with a grinding wheel, and comprises: a threaded grinding wheel (32) that shapes a gear (4) by machining a workpiece (4); and a disc-shaped dresser (36) that shapes the threaded grinding wheel (32) while rotating with the threaded grinding wheel (32) in a meshed state. A pressure angle (a) of the dresser (36) is designed to be dislocated such that a reference pitch circle diameter (PCD) of the gear (4) shaped by the threaded grinding wheel (32) is outside the tooth profile evaluation range of a tooth surface (5).

Abstract: This cylindrical cutter for skiving comprises a plurality of cutting edge parts in the circumferential direction by having tooth grooves be formed between circumferentially adjoining cutting edge parts with the tooth grooves being formed into a helical shape twisting in the axial direction. Cutting edge grooves are each formed in the cutting edge parts so as to divide the cutting edge parts into multiple sections in the length direction of the tooth grooves.

Abstract: There is provided a chip sweeping robot which is capable of possessing adaptability to various machine tools and automatically sweeping a wide range efficiently. To this end, a chip sweeping robot configured to sweep chips, which are scattered on an upper surface of a table of a machine tool at the time of machining a workpiece attached to the table, by traveling in accordance with a travel route set on the upper surface, includes: a robot body which autonomously travels on the upper surface; a rotating brush which sweeps the chips out forward in a traveling direction by being rotated from a lower side to an upper side forward in the traveling direction; and a blade which scoops out the chips, which pass through the rotating brush, forward in the traveling direction and sends the chips to a rotating region of the rotating brush.

Abstract: This grinding wheel tool is provided with a cylindrically shaped head unit comprising a hollow area passing through the inside, and abrasive grains adhered across the entire outer peripheral surface of the head unit. A fluid is supplied in the hollow area, and in the head unit, communication holes are formed which communicate between the hollow area and the outer peripheral surface and which, from the radial direction of the head unit, are angled forwards in the direction of rotation. Hereby, it is possible to provide a grinding wheel tool which can greatly reduce clogging even in cases where a high amount of cutting chips are generated per unit time, such as in high-feed processing.

Abstract: A room-temperature bonding apparatus of the present invention includes: a plurality of first beam sources configured to emit a plurality of first activation beams which are irradiated to a first activation surface of a first substrate; a plurality of second beam sources configured to emit a plurality of second activation beams which are irradiated to a second activation surface of a second substrate; and a pressure welding mechanism configured to bond the first substrate and the second substrate by bring the first activation surface and the second activation surface contact, after the first activation surface and the second activation surface are irradiated.

Abstract: An inter-substrate material layer is formed between a first substrate and a second substrate to generate a bonding strength. A plurality of metal elements are present in the inter-substrate material layer. An interface element existence ratio of the plurality of metal elements is 0.07 or above. A device can be obtained in which substrates difficult to bond (for example, SiO2 substrates) are bonded at room-temperature to have practical bonding strength.

Abstract: Provided is a processing inspection workpiece for a machine tool with which it is possible to inspect tool precision by subjecting the machine tool to on-machine measurement. Also provided is an on-machine measurement method using said workpiece. In a processing inspection workpiece, five surfaces, excluding a hexahedron bottom surface, function as processing surfaces, and multiple reference surfaces, which are in the same direction as the respective processing surfaces and for which multiple in-plane coordinates are already known, are disposed on each processing surface. A machine tool is subjected to on-machine measurement using said processing inspection workpiece.

Abstract: Provided is a clamping device having improved safety and an improved clamping force for clamping a work to an attaching table, said work having the inner circumferential surface thereof to be processed. The clamping device clamps a work (101) disposed on the reference surface (32) of an attaching table (30). The clamping device is provided with: a board-like fixing member (10), which has formed therein a hole (11a) that is larger than the inner diameter (D1) of the work (101) but smaller than the outer diameter (D2) of the work, and which is in surface-contact with the end surface (101a) of the work (101) disposed on the reference surface (32) of the attaching table (30); and a pressing force applicator (20), which has a cylindrical shape that surrounds the attaching table (30), and which applies a pressing force toward the end surface (101a) of the work (101) with respect to the fixing member (10).