Abstract: The invention relates to an apparatus 100 for machining a workpiece with a laser beam 101 coupled into a fluid jet. The apparatus 100 comprises a laser unit 101a for providing the laser beam 101, a nozzle unit 102 with an aperture 102a for producing the fluid jet, and an optical unit 103 configured to provide the laser beam 101 from the laser unit 101a onto the nozzle unit 102. Further, the apparatus 100 comprises a control unit 104 configured to control 108, 110 the optical unit 103 and/or nozzle unit 102 to change a point of incidence 109 of the laser beam 101 on the nozzle unit 102. The apparatus 100 also comprises a sensing unit 105 configured to sense laser light 106 reflected from a surface 102b of the nozzle unit 102 and produce a sensing signal 107 based on the sensed reflected laser light 106.

Abstract: This machining program generation device is provided with: a storage unit that stores machining conditions for respective tool regions determined on the basis of the number of effective edges in a multi-blade tool; a contact region calculation unit that calculates a tool region which comes into contact with a workpiece during machining on the basis of the shapes of the workpiece and the edge portion of the tool and of a tool path; and a machining program generation unit that generates a machining program on the basis of the tool path and the machining conditions stored in the storage unit in association with the tool region coming into contact with the workpiece.

Abstract: This machining program generation device is provided with: a storage unit that stores machining conditions for respective tool regions determined on the basis of the number of effective edges in a multi-blade tool; a contact region calculation unit that calculates a tool region which comes into contact with a workpiece during machining on the basis of the shapes of the workpiece and the edge portion of the tool and of a tool path; and a machining program generation unit that generates a machining program on the basis of the tool path and the machining conditions stored in the storage unit in association with the tool region coming into contact with the workpiece.

Abstract: A machine tool having at least two rotary feed axes (B, C) is provided with: a base; a column which moves in a left-right direction (X); a main spindle head which moves in a vertical direction (Y); and a table which has a workpiece attachment surface and in which the workpiece attachment surface is oriented in a plurality of attitudes including a horizontal attitude and a vertical attitude. The column is guided in the left-right direction (X) by means of an inclined linear motion guide which faces forward and upward. The table includes: a first table stand having an inclined rotary guide which faces backward and upward; and a second table stand which is rotationally fed about an inclined axis (Oc) perpendicular to the inclined rotary guide. The inclined linear motion guide of the column and the inclined rotary guide of the table are disposed facing one another.

Abstract: This method, for controlling a machine tool using a tool holder to which a coolant pipe is attached, includes: a step of detecting, in response to a signal indicating that a tool is prepared on a tool loading station of the machine tool, whether or not an abnormality has occurred in attaching the coolant pipe to the tool holder of the tool while the tool holder is at the tool loading station; and a step of issuing an alarm when the abnormality is detected in the step of detecting the occurrence of the abnormality.

Abstract: Provided is a power supply unit, which is to be used for a multi-wire electrical discharge machining apparatus arranged to slice a material to be machined by an electrical discharge generated between a wire group including a plurality of turns of a wire arranged in parallel and the material to be machined, and to which a power supply terminal to be brought into contact with the wire group at a time to supply a voltage to the wire group is mounted, the power supply unit including: a mounting portion to which the power supply terminal to be brought into contact with the wire group at a time is mounted; and an adjusting portion arranged to adjust an inclination of the mounting portion in a direction crossing a running direction of the wire group.

Abstract: A tool path is generated with procedures that include: one of the processing points (Pi) on a multiple rows of tool paths (PA) obtained by connecting multiple prescribed processing points sequentially with straight lines is set as a revision processing point (Pt), points on the multiple rows of tool paths are set as distance calculation points (Pu), and the distance (L) from the revision processing point (Pt) to each of the distance calculation points (Pu) is calculated; the distance calculation points (Pu?) for which the distance (L) is within a prescribed value (?L) are extracted; the mean values of the position data for the distance calculation points (Pu?) and the position data for the revision processing point (Pt) are calculated; and the position data is revised by means of the mean values, and a new tool path (PA?) is created.

Abstract: A numerical control device which controls a feed axis of a machine tool has a storage unit which divides a range of movement of the feed axis into a plurality of regions and stores a plurality of control parameters corresponding to the divided plurality of regions in advance, a position detection unit which detects a position of a feed axis at the time of machining a workpiece, a parameter selection unit which reads out control parameters corresponding to a divided region to which the detected feed axis position at the time of machining a workpiece belongs, and a servo control unit which controls the feed axis using the read control parameters. Due to this, it is possible to provide a numerical control method of a machine tool which realizes stable machining precision without regard as to the feed axis position and a numerical control device which conducts that method.

Abstract: A machine tool includes: a bed, the upper surface of which has the table provided thereon; a cut debris duct which is provided so as to extend rearward from a cut debris discharge opening open at the center, in the left-right direction, of the rear face of the bed, and which discharges cut debris from within the bed to outside of the machine tool; a bifurcated vertically movable body which vertically moves along a pair of vertical guides, and which straddles the cut debris duct, the pair of vertical guides vertically extending on the rear face of the bed at positions on both the left and right sides of the cut debris duct; and a pair of left and right feed screws which extend parallel to the vertical guides, and which move the vertically movable body along the vertical guides.

Abstract: The method that exchanges pallets (118) between a table (116) and a pallet loading station (14) of a machine tool is configured so that the lower edge (122) of a pallet (A) installed on the table (116) is grasped by the leading edge portion (17) of a first arm (16a) of the exchanging arm (16) and the one side (122) of a pallet (B), which is disposed on the pallet loading station (14), that will become the lower edge when the pallet is installed on the table (116) is grasped by the leading edge portion (17) of a second arm (16b) of the exchanging arm (16), and the exchanging arm (16) is rotated 180° around an inclined axis (O) that extends 45° upward from a horizontal axis in a vertical plane that contains the axis of rotation (Os) of the main axis (108).

Abstract: A coolant supply apparatus includes variable delivery coolant pump (100) pumping up coolant from coolant tank (104), a plurality of branch passages (120 to 124) allowing coolant (108) delivered from coolant pump (100) to flow separately to a plurality of parts of a machine tool, and machine control unit (110) turning on and off on-off valves (136) of the plurality of branch passages (120 to 124), wherein machine control unit (110), in response to a jet coolant instruction, opens only one branch passage to intensively supply coolant (108) to the branch passage at the maximum delivery rate of coolant pump (100) and closes the other branch passages.

Abstract: A tool exchanger for storing a tool (10) with a holding groove (12) formed at a periphery of the tool in a plurality of tool storage parts (302) provided in a tool magazine (300) so that a tool axis becomes substantially horizontal in direction, and taking out the tool from the tool storage parts (302), the tool exchanger including: a base part (100); a slider (200) provided in a side of the tool storage parts (302) slidably relative to the base part (100) in a direction substantially parallel to the tool axis; a holder (250) attached to the slider (200) in a movable manner relative to the slider, and having an engagement part (252) which engages with the holding groove (12) of the tool; and a moving portion moving the holder (250) relative to the slider (200), wherein the moving portion includes: a handle part (260) for exerting a rotary force about an axis extending substantially parallel to the tool axis; a first cam mechanism (250, 242) moving the holder in a plane substantially perpendicular to the tool

Abstract: In this numerical control method that drives the feed shaft of a machine tool (10) by means of a servo control unit (52), a transmission function is determined by modeling the operation of the servo control unit (52) of the feed shaft, the closed loop transmission function (GBP) of the position loop and/or the closed loop transmission function of the velocity loop of the servo control unit (52) of the machine tool is measured using the frequency response of the feed shaft, the control subject (PP) of the position loop and/or the control subject of the velocity loop is determined using the measured closed loop transmission function, the position loop modeling error (?PP) and/or the velocity loop modeling error is determined from the control subject, and at least one control parameter of the servo control unit (52) is calculated using the closed loop transmission function and/or the modeling error.

Abstract: A machine tool including a tool magazine (20) arranged in a storage region adjacent to a working region of a workpiece to store a working tool (31) for working the workpiece and a measurement tool (32) for measuring the workpiece; a spindle (10) to which the working tool and the measurement tool are attached in a detachable manner, the spindle being provided in a movable manner relative to the workpiece; a shutter (40) provided between the working region and the storage region in an openable and closable manner; a transceiver (51) attached to the measurement tool; and a communication module (52) arranged in the storage region to communicate with the transceiver of the measurement tool attached to the spindle.

Abstract: In the machine tool (10) pertaining to the present invention, an imaging device (33) takes an image of a tool (20) being moved in the feeding direction. Contour lines (51) are identified by means of the plurality of sets of image data generated from imaging. The movement trajectory (52) and the central axis (53) of the tool (20) are identified on the basis of the contour lines (51). When the movement trajectory (52) and the central axis (53) are offset, said offset can be used to correct the positioning of the tool (20) with the machine tool (10). As a result, the processing accuracy of a workpiece improves. Moreover, when the dimensions of a tool (20) that has a tilted posture are measured, it is possible to determine the actual tool diameter or the actual blade position in the tilted posture. The aforementioned blade position and tool diameter can be used to correct the positioning of the machine tool (10). Thus, the processing accuracy of the workpiece improves even more.

Abstract: A chatter vibration detection method includes acquiring vibration data of a tool (4) at a time of machining a workpiece at a predetermined sampling period (?t), calculating an autocorrelation coefficient (Rxx?) corresponding to a time required for a cutting edge (4a, 4b) to contact the workpiece (W) several times based on acquired time series vibration data and calculating a period (Tx) of characteristics of the calculated autocorrelation coefficient (Rxx?), and deciding that chatter vibration occurs when a contact period (T1) at which the cutting edge (4a, 4b) contacts the workpiece (W) is not an integral multiple of the calculated period (Tx).

Abstract: A hole drilling method includes a rotating step of attaching a workpiece to a rotary table to make the workpiece rotate in an opposite direction to the rotating direction of the rotary tool and a drilling step of making the rotary tool and the workpiece move relative to each other in a direction in which they approach each other so as to drill a hole. The hole drilling step comprises making a position of the rotary tool track the rotation of the workpiece while drilling the hole so that the rotary tool is arranged at a position for drilling a hole in the workpiece.

Abstract: A scroll machining method for forming a wall part (21) configured in a scroll shape on a surface of a workpiece (W), which includes a first scroll machining step of machining one of the wall surfaces (22, 23), in which a tool (14) is moved relative to the workpiece from an outside of the workpiece (W) toward a center part (25) along a predetermined path (L1) while turning the rotary table (17) in a first direction (R1); and a second scroll machining step of machining the other of the wall surfaces (22, 23), in which the tool (14) is moved relative to the workpiece from the center part (25) of the workpiece (W) toward the outside by returning along the predetermined path (L1) while turning the rotary table (17) in a second direction (R2) opposite to the first direction (R1).

Abstract: In the machine tool (10) pertaining to the present invention, the contour lines (51) of a tool (20) are displayed on a display screen (S). When an operator measuring the dimensions traces a contour line (51) on the display screen (S) of a touch panel (45) with a finger, it is possible to automatically identify, on the display screen (S), the site to be measured (i.e., the contour line (51)) on the tool (20). In this way, an operator can measure the dimensions of the tool (20) in an extremely simple manner. Additionally, it is possible to automatically measure the tool diameter or the blade position of the tool (20) as the operator designates a specific position on the contour line (51) of the tool (20). Thus, with such a method for measuring the dimensions of the tool (20), it is possible to easily identify an unexpected site to be measured on a tool having complex contour lines, such as a multi-stage tool.

Abstract: According to the machine tool according to the present invention, a top-bottom guide is attached to a back surface of a base frame. By being guided by this top-bottom guide, the lifter moves in the top-bottom direction with respect to the base frame. A drive source which drives rotation of a top-bottom feed screw which extends parallel to the top-bottom guide is attached to a back surface of the base frame. This drive source is coupled with a bottom end of the top-bottom feed screw. As a result, compared to when the drive source is coupled with a top end of the top-bottom feed screw, the center of gravity of the machine tool can be set to a lower position. In this way, a machine tool can be increased in stability.