Abstract: An NC control unit 100 includes a touch panel display device 155 through which a barrier canceling command is input and a machining control section 160 that performs an interference check for interference between a milling tool 70 and a chuck 58 and jaws 60. When the machining control section 160 determines that interference occurs and stops movement of a tool rest 54, the machining control section 160 writes the barrier canceling command that commands cancelation of the interference check for a process of a machining program where the interference has been determined based on manipulation of the display device 155. When the machining program including the barrier canceling command is carried out to machine subsequent workpieces, the machining control section 160 omits the interference check for the process corresponding to the barrier canceling command.

Abstract: A machine tool includes a main machine, a pallet change unit, a main body cover, a machine entry door, an internal machine cover, and an internal entrance area. The main machine is configured to machine a workpiece. The pallet change unit is adjacent to the main machine. The main body cover is provided on the pallet change unit. The machine entry door is provided in the main body cover. The internal machine cover is connected to the machine entry door. The internal entrance area is defined by the machine entry door and the internal machine cover. The machine entry door and the internal machine cover are constructed to sweep the internal entrance area.

Abstract: A vertical machining center includes a table, a tool spindle, an angle tool holder, a tool unclamping operation device, and a tool changer. The angle tool holder includes a shank, a spindle, a housing, a collet, a draw bar, and a spring mechanism. The shank has a shank axis and is rotatable around the shank axis. The spindle has a spindle axis perpendicular to the shank axis and is rotatable around the spindle axis. The tool unclamping operation device includes an angle tool holder rest, a hydraulic piston, and a restrictor. The angle tool holder is to be placed on the angle tool holder rest. The restrictor is disposed on the angle tool holder rest to restrict a portion of the angle tool holder and to receive force in a direction of the spindle axis which is generated in a case where the hydraulic piston presses the draw bar.

Abstract: A machine tool includes a table, a spindle head, a spindle, and an internal turning attachment. The internal turning attachment includes an attachment base, a body, and a tool holder. The tool holder has a tool mount surface to which a turning tool is detachably mounted. The tool mount surface provides a changeable tool mount angle with respect to a plane perpendicular to a spindle rotational axis in a state where the internal turning attachment is mounted to the spindle head. An angle between the spindle rotational axis and a vertical axis is to be larger than zero degree according to the changeable tool mount angle and is fixed while the turning tool contacts a workpiece in a case where the workpiece has a hole with a depth exceeding a length from a body upper portion to a tip end of the turning tool along the spindle rotational axis.

Abstract: A machine tool includes a tool attachment device, a workpiece attachment device, a controller, a mode selector, an axis selector, a cover, a window, and a manual operation auxiliary display device. The controller is configured to control movements of at least one of the tool attachment device and the workpiece attachment device with respect to a target axis. The mode selector is configured to select a manual operation mode or an automatic operation mode. The axis selector is to select the target axis among a plurality of axes in a case where the mode selector selects the manual operation mode. The manual operation auxiliary display device is configured to display directions of the plurality of axes included in the machine tool as an axis configuration model in the window in a case where the manual operation mode is selected.

Abstract: A vertical machining center includes a machining table on which a first pallet is placed and which moves in an X axis direction. A spindle head includes a spindle and moves in a Z axis direction. A rotary pallet exchanger exchanges the first pallet with a second pallet in a setup area. In a pallet rotational movement area, the first and second pallets are rotated. An oil pan is below the second pallet in the setup area, accommodates a part of the pallet rotational movement area, and includes a cutout portion. Space exposed to the cutout portion forms a cutout area. A door partitions a machining area from the setup area. An amount of offset in the X axis direction from the axial center of the spindle to the rotational center of the pallet exchanger is equal to or less than a width of the first pallet.

Abstract: The invention provides a vertical turret lathe capable of preventing an inner diameter turning tool attached to a turret tool rest from interfering with a workpiece during machining of the outer diameter of the workpiece. The vertical turret lathe comprises a work table that holds a workpiece W1 and rotates, and a working head 40 having a turret tool rest 50 and capable of moving in X-axis and Z-axis directions. A tool holder 70 for holding an inner diameter turning tool T2 via hydraulic pressure is attached to a part of the tool supporting portions 60 of the turret tool rest. The automatic tool changer apparatus 100 includes a turret-type tool magazine 120 and pistons 160 and 162, which mechanically press the pins 74 and 76 of the tool holder 70 and clamp or unclamp the tool T2.

Abstract: A slip ring is accommodated in a ram 34. The slip ring includes a fixed portion 72 having a feed element connected to a power source and a movable portion 73 electrically connected to the feed element. The movable portion 73 includes a contact 75 for supplying electricity to a spindle unit 100 and an electric device of a spindle head 118. After determining the position of a saddle 32 in a Y-axis direction and the position of a table in an X-axis direction, the position of the spindle head 118 about a B-axis is determined. Then, the ram 34 is moved along the Z-axis direction with the spindle unit 100 revolved about the C-axis, and, with a non-rotational cutting tool 170 attached to the spindle unit 100, a hole is bored in a workpiece W on the table.

Abstract: A turning tool is arranged at a tool spindle (102) of a composite working lathe (1) to improve working efficiency. A composite working lathe (1) includes a first workpiece headstock (20) placed on a bed (10). A chuck (24) of a workpiece spindle (22) is rotated as holding a workpiece (K.sub.1). A tool headstock (100) arranged at a carriage (50) is rotated about B-axis while being linearly moved in the directions of X-axis, Y-axis and Z-axis. The tool headstock (100) operates a mill tool (110) and includes a comb-shaped cutting tool rest (150) having turning tools attached at the opposite side of a housing in a comb-shaped manner, so that turning processing can be performed with tool indexing in a short time.

Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: The present invention provides a machining center that efficiently machines a long workpiece using two pallets. A machining center 1 includes a saddle 30 that moves in a Y axis direction on a bed 10, and a table unit 50 moves in an X axis direction on the saddle 30. At a right end and a left end of the front surface of the bed 10, setup stations 110 and 120 are respectively disposed. While a spindle head 80 is machining a workpiece W2 with one pallet 140 placed on the table unit 50, a workpiece W1 can be set up onto the other pallet 130. A long workpiece can also be machined on the two pallets 130 and 140 placed on the table unit 50.

Abstract: The present invention provides a machining center that efficiently machines a long workpiece using two pallets. A machining center 1 includes a saddle 30 that moves in a Y axis direction on a bed 10, and a table unit 50 moves in an X axis direction on the saddle 30. At a right end and a left end of the front surface of the bed 10, setup stations 110 and 120 are respectively disposed. While a spindle head 80 is machining a workpiece W2 with one pallet 140 placed on the table unit 50, a workpiece W1 can be set up onto the other pallet 130. A long workpiece can also be machined on the two pallets 130 and 140 placed on the table unit 50.

Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: A tool holder is provided that prevents chattering in a large-sized cutting tool. A tool holder 1 includes an anti-vibration device provided in a radially outer portion of a body. The anti-vibration device has a ring-shaped first anti-vibration member and a second anti-vibration member. The anti-vibration device is fixed to the body together with a cutting tool T1 by means of a bolt. Four O-rings are arranged on both sides of the first anti-vibration member, and the damper property is adjusted by pressing a pressing plate with adjuster bolts. An appropriate gap is formed between the first anti-vibration member and the body and between the first anti-vibration member and the second anti-vibration member.

Abstract: The invention provides an angle tool holder to be disposed on an attachment attached to a spindle head of a vertical machining center and holding the angle tool holder to enable five-face machining of a workpiece. The angle tool holder denoted as a whole by reference number 500 has a shank 510 inserted to a spindle of the main machine, wherein a rotation of the shank 510 is transmitted via a gear transmission mechanism or the like disposed in a housing 540 so that the direction of a drive shaft thereof is varied orthogonally to thereby drive the angle cutter 520. An arm 550 connected to the housing 540 has three pull stud bolts 570 disposed thereon. The three pull stud bolts 570 are arranged at 90-degree intervals, and are clamped simultaneously by three collet chucks out of the four collet chucks disposed on the attachment unit for five-face machining.

Abstract: An NC machine tool system includes an NC machine tool (10), a first operation panel (22) and a second operation panel (24) for the NC machine tool, a multi-joint robot (40), a memory (450), and a robot controller (50). The multi-joint robot (40) is disposed above the NC machine tool. The memory (450) stores a wait position return program by which the multi-joint robot (40) is operated. The robot controller (50) controls the multi-joint robot (40) in accordance with the program. Operation panels (22, 24) are respectively provided with switch keys (22c, 24c) operated to execute the wait position return program stored in the memory (450) so as to operate the multi-joint robot (40).

Abstract: When machining of a circumferential groove is performed by advancing a cutting tool which is attached to a rotating shaft extending to an inner side from an outer side of a rotating work into the work in a depth direction, the rotating shaft is downwardly inclined toward the inner side of the work at a predetermined inclination angle, a trajectory of a cutting edge within the work is arranged to be an ellipse of which minor axis is oriented in the radial direction connecting a deepest point thereof and the center of the work as viewing in a plane view, and the work is cut as lowering the cutting tool until reaching groove depth of a machining target while maintaining the inclination angle, so that deviation occurring in a direction of an axis toward a work center axis in parallel to a work face from a point on the work face on which the deepest point is projected or an axis of the rotating shaft of the cutting tool projected on the work face can be arbitrarily set.

Abstract: A control panel 21 has a display screen 22. An operator turns a low-thrust pressing key 28 ON in the menu key group 26 displayed on the display screen 22. In this state, the operator turns an operating dial 32 of a manual pulse generator 31, thereby causing an encoder 34 to generate pulses. When the encoder 34 outputs a pulse signal as a command signal, and a servomotor 17 is driven in accordance with the command signal, the tailstock is advanced. With the distal end of a tailstock center contacting a center hole of the workpiece, the operator turns the operating dial 32, thereby finely adjusting the drive torque of the servomotor. Accordingly, the thrust of the tailstock center is finely adjusted, so that the tailstock center is pressed against the workpiece by a low thrust.

Abstract: A carriage is moved in a direction including a Y axis component in order to move a turning process tool that is attached to a tool spindle along a horizontal line that is perpendicular to a Z axis, and thus, a turning process is carried out on a workpiece which is attached to a workpiece spindle.

Abstract: The present invention achieves improvement of an adjustment structure of a turning spindle in the vertical direction and the horizontal direction. A turning spindle unit 100 includes a turning spindle base push-pull block 140 which adjusts a turning spindle base 110 fixed onto a bed 10 in the horizontal direction. The turning spindle base 110 includes a turning spindle push-pull block 180 to push and pull a turning spindle 60. A mounting seat 112 inclines at an angle to the horizontal plane.