Abstract: A workpiece support device includes: a jig, a table, a rotating shaft, a support member, a flow path connector, and a supply-side connecting portion. The jig has a main flow path to flow a fluid for machining and a sub-flow path, and fixes the workpiece. The table has a table flow path to communicate with the main flow path and is attached with the jig. The rotating shaft has a rotating shaft flow path to communicate with the table flow path, and is fixed to the table. The support member rotatably supports the rotating shaft. The flow path connector connects the rotating shaft flow path with a fluid-supply path to communicate with a fluid-supply side so as to relatively rotate with each other about an axis of the rotating shaft. The supply-side connecting portion moves relative to the jig to communicate with and block off the sub-flow path.

Abstract: The three-dimensional shaping device (100) is provided with a layer forming device (10) to form a layer of metal powder (90) on a shaping object, and a laser light irradiation device (20) to irradiate the layer of metal powder (90) formed by the layer forming device (10) with a laser light (25). The laser light (25) to be used in the three-dimensional shaping device (100) has a pulsed output waveform with a frequency of 5 to 200 kHz, a pulse width of 5 to 200 ?s and a peak output of 10 to 500 W. Further, an overlap rate, which is a rate at which irradiation spots on the layer of metal powder (90) by two successive pulses of the laser light (25) overlap with each other, is 50 to 99.9%. Hereby, it is possible to provide a three-dimensional shaping method and a three-dimensional shaping device which can shape a shaping body having a narrower shaping width.

Abstract: A cutting tool is rotatable about an axis line, and includes a main body portion, a cutting insert, and a plurality of anti-vibration members. The main body portion has an inner circumferential surface and an outer circumferential surface opposite to the inner circumferential surface. The cutting insert is attached to at least one of the inner circumferential surface and the outer circumferential surface. Each of the plurality of anti-vibration members is provided at the main body portion. Each of the plurality of anti-vibration members includes a weight member composed of a material having a specific gravity larger than a specific gravity of a material of the main body portion.

Abstract: A workpiece support device includes: a jig, a table, a rotating shaft, a support member, a flow path connector, and a supply-side connecting portion. The jig has a main flow path to flow a fluid for machining and a sub-flow path, and fixes the workpiece. The table has a table flow path to communicate with the main flow path and is attached with the jig. The rotating shaft has a rotating shaft flow path to communicate with the table flow path, and is fixed to the table. The support member rotatably supports the rotating shaft. The flow path connector connects the rotating shaft flow path with a fluid-supply path to communicate with a fluid-supply side so as to relatively rotate with each other about an axis of the rotating shaft. The supply-side connecting portion moves relative to the jig to communicate with and block off the sub-flow path.

Abstract: A machine tool includes a rotation indexing device. The rotation indexing device includes a frame accommodates a rotary shaft, a drive motor rotationally drives the rotary shaft, a drive transmission mechanism accommodated in a space inside the frame, and a detection device. The drive transmission mechanism includes a gear mechanism, and the space includes one or more storage parts for storing lubricating oil. The detection device detects a height position of an oil level of the lubricating oil, and is provided on a one-to-one basis with respect to a detection target storage part, which is set as a detection target, of the one or more storage parts.

Abstract: This gantry type conveying device is provided with: a beam which is horizontally installed; a runner traveling along the beam; an elevator supported to be movable in the vertical direction with respect to the runner; and a loading part which is supported by the lower portion of the elevator and on which a workpiece is loaded. This processing line has the gantry type conveying device and a machine tool. The machine tool is provided with: a base; and a workpiece supporting device provided movable with respect to the base in a forward and backward direction perpendicular to the extending direction of the beam when viewed in a plane.

Abstract: A machine tool includes a tool that machines a workpiece while being contact with the workpiece, a state-quantity-data acquisition unit that acquires state quantity data of the workpiece and of the tool, a state-quantity-estimation-data calculation unit that calculates state quantity estimation data from a simulation model including a device dynamic characteristic model indicating a dynamic characteristic of the tool and a workpiece model indicating a target shape of the workpiece, and a machining-state calculation unit that calculates machining state data indicating a machining state of the workpiece based on the state quantity data and the state quantity estimation data.

Abstract: This gantry type conveying device is provided with: a beam which is horizontally installed; a runner traveling along the beam; an elevator supported to be movable in the vertical direction with respect to the runner; and a loading part which is supported by the lower portion of the elevator and on which a workpiece is loaded. This processing line has the gantry type conveying device and a machine tool. The machine tool is provided with: a base; and a workpiece supporting device provided movable with respect to the base in a forward and backward direction perpendicular to the extending direction of the beam when viewed in a plane.

Abstract: A cutter performs milling on a crankshaft blank having a journal and a counterweight coupled to the journal. The cutter includes an annular main body part, a first chip, and a second chip. The annular main body part is centered on a predetermined axis center. The first chip is attached to a circumferential surface of the main body part and is used to cut an external circumferential surface of the journal. The second chip is attached to the circumferential surface of the main body part and is used to cut a groove on the external circumferential surface of the journal.

Abstract: Provided is a bed (10) used for a grinding machine (1). The bed has a bed front part (11) on which a workpiece support device (20) is mounted and a bed rear part (15) on which a grinding wheel stand (30) is mounted. An upper portion (12) of the bed front part (11) protrudes further to both of the left and the right than a lower portion (13). A front installation section (17a) is provided in the lower portion (13), and in the bed rear part (15), two rear installation sections (17b) are provided spaced apart from each other in the left-right direction. In this configuration, resonant vibration of the bed (10) due to the vibration of the grinding wheel stand (30) can be suppressed.

Abstract: A tool magazine device includes a rail that is annularly formed and that has a separation section at a part in a circumferential direction of the rail and a holding ring that is arranged coaxially with the rail and that is rotated by a driving motor. The holding ring is provided with a plurality of holding sections that are open in an axial direction of the holding ring. The holding sections are arranged in the circumferential direction of the holding ring. A tool pot is held to be insertable into and extractable from each holding section. A conveyance unit sends out the tool pot placed in the holding section to an exchange position and sends the tool pot into the holding section from the exchange position. A roller supported by each tool pot rolls on the rail in response to the rotation of the holding ring.

Abstract: A crankshaft machining system includes a center hole boring device, a post-centering balance meter and a cutting device. The post-centering balance meter is configured to measure the shape of a post-centering crankshaft blank on the basis of a pair of center holes. Additionally, the post-centering balance meter is configured to set a principal axis of inertia on the basis of the shape of the post-centering crankshaft blank and generate center hole positional information for correction that indicates intersections between the principal axis of inertia and both end surfaces of the post-centering crankshaft blank. The center hole boring device is configured to bore a pair of center holes on both end surfaces of another crankshaft blank to be loaded next on the basis of the center hole positional information for correction.

Abstract: A wire (12) is wound around multiple processing rollers (11) several times. A holding mechanism (13) and a depressing mechanism (25) are provided above an area where the wire (12) is wound. The holding mechanism (13) holds a workpiece (W) elastically and laterally. The depressing mechanism (25) depresses the workpiece (W) held by the holding mechanism (13) toward the wire (12).

Abstract: This gantry type conveying device is provided with: a beam which is horizontally installed; a runner traveling along the beam; an elevator supported to be movable in the vertical direction with respect to the runner; and a loading part which is supported by the lower portion of the elevator and on which a workpiece is loaded. This processing line has the gantry type conveying device and a machine tool. The machine tool is provided with: a base; and a workpiece supporting device provided movable with respect to the base in a forward and backward direction perpendicular to the extending direction of the beam when viewed in a plane.

Abstract: A machine tool includes a door used for opening and closing an opening of a frame and a tool exchanger arm used for exchanging a tool between a tool magazine and a main shaft. The machine tool further includes an interlocking mechanism provided between the door and the tool exchanger arm. The interlocking mechanism works in an interlocking relationship with tool exchanging operation by the tool exchanger arm to open and close the door.

Abstract: To provide an automatic chuck greasing device in a crankshaft miller capable of ensuring chuck greasing without missing its timing and preventing failure to remove excess grease by wiping.

Abstract: Provided is a two-dimensional movement closed-link structure for supporting a moving object. The moving object can freely move in a plane includes a fixed link, a first link one end of which is rotatably connected to one end of the fixed link, a second link one end of which is rotatably connected to the other end of the first link, a third link one end of which is rotatably connected to the other end of the second link, and a fourth link one end of which is rotatably connected to the other end of the third link and the other end of which is rotatably connected to the other end of the fixed link, the second link having joint parts at both ends at which the second link is connected and a bar part, and the moving object being disposed in the bar part of the second link.

Abstract: A machine tool includes a spindle device; a shutter which is disposed between a tool magazine disposed over a machining chamber and the machining chamber, and is capable of opening and closing; a tool exchange device; and a tool breakage detecting device to detect whether a tool indexed to a tool detecting position of the tool magazine has breakage or not, and performs a return step of returning a first tool to the tool magazine with use of the tool exchange device; an attachment step of attaching a second tool to the spindle device; and a breakage detecting step of rotatively moving the first tool returned to the tool magazine to the tool detecting position and detecting breakage of the first tool with use of the tool breakage detecting device, after the shutter is closed. This constitution can prevent erroneous detection and improve the operational efficiency of the machine tool.

Abstract: Provided is a wire saw where a wire (47) extends and is wound around a plurality of machining rollers (45), the wire (47) is moved in a circulating manner around the machining rollers (45) due to rotation of the machining rollers (45), and a workpiece (49) is cut by the wire (47) at a workpiece cutting position. The wire saw includes a supply pallet (67) which guides the workpiece (49) to move toward the wire (47) at the workpiece cutting position in an upright state. The wire saw also includes a receiving pallet (100) which is arranged at a workpiece receiving position located downstream of the workpiece cutting position in the workpiece conveying direction, and receives the cut workpiece (49) with the workpiece (49) being kept in an upright state.

Abstract: In a single-wire type wire saw, a work is fed relatively to a wire stretched between a pair of grooved guide rollers disposed in the same direction and the work is cut by traveling the wire. When a cutting-feeding direction changes during a cutting of the work, an operation shaft is moved along an arc around the center axis of the wire in a cutting area and simultaneously support arms are rotated around the operation shaft to thereby oppose the wire support direction of the pair of grooved guide rollers to the cutting-feeding direction.