Abstract: The present invention provides an attachment to be attached to a spindle head of a vertical machining center for gripping an angle tool holder and performing five-face machining. An attachment unit 100 for five-face machining comprises a ring-shaped cylinder member 110 fixed to a lower portion of a spindle head, and a clamp unit 130 directly connected to a piston disposed in the interior of a cylinder member. The clamp unit 130 is equipped with four collet chucks 140 for gripping a pull stud bolt 270 disposed on an arm 250 of an angle tool holder 200 attached to a spindle and drives an angle tool 220.

Abstract: The invention provides a composite working lathe capable of improving the efficiency of workpiece machining area by arranging a workpiece handling device below a spindle of the composite working lathe. The composite working lathe 1 comprises a spindle 20 and a tool spindle 30 on a bed 10. A workpiece handling device 40 arranged below the spindle 20 can be moved along a W axis parallel to the axis line C1 of the spindle. The workpiece handling device 40 has a workpiece handling head 50 that pivots in the direction of arrow F around an axis line C2, and grips the workpiece K1 via a gripper 60. The axis line C2 is an axis perpendicular to the vertical plane including the axis line C1 of the spindle 20, and the workpiece handling head 50 is raised for 90 degrees when the gripper 60 receives the workpiece K1 from the spindle 20. The angular position of the workpiece handling head 50 is allocated and the workpiece K1 is machined via a tool T1 on the tool spindle 30.

Abstract: A preparing apparatus of an NC machining program prepares an NC machining program including a position instruction of a cutting portion of a rotary tool on the basis of a two-dimensional workpiece coordinate system having a Z-axis and an X-axis as coordinate axes. An operator inputs a lead clearance ? and a radial clearance ? to the preparing apparatus via an input operation section. A processing section converts the NC machining program prepared on the basis of the two-dimensional workpiece coordinate system into an NC machining program including a position instruction of a three-dimensional workpiece coordinate system having the X-axis, a Y-axis and the Z-axis as the coordinate axes, on the basis of the lead clearance ? and the radial clearance ?.

Abstract: The present invention provides an attachment to be attached to a spindle head of a vertical machining center for gripping an angle tool holder and performing five-face machining. An attachment unit 100 for five-face machining comprises a ring-shaped cylinder member 110 fixed to a lower portion of a spindle head, and a clamp unit 130 directly connected to a piston disposed in the interior of a cylinder member. The clamp unit 130 is equipped with four collet chucks 140 for gripping a pull stud bolt 270 disposed on an arm 250 of an angle tool holder 200 attached to a spindle and drives an angle tool 220.

Abstract: A simulation control section 210 of an NC machining simulation apparatus 10 computes a movement path of a mechanical element when performing simulation. A ring buffer 270 memorizes the movement path of the mechanical element. In response to a replay instruction, the simulation control section 210 reads the movement path from the ring buffer 270. The simulation control section 210 then displays the mechanical element on a display device 190 as a solid model based on the movement path for replaying the simulation.

Abstract: The invention provides a device for automatically carrying in and out a workpiece cooperating with a tool spindle stock of a composite working lathe. The composite working lathe comprises a main spindle 10, a workpiece handling device 20 and a tool spindle stock 30 that rotates around a B axis. A workpiece carry-in/out device 100 comprises a frame 120 including a material carry-in hand 130 and a finished product tray 140, and a cylinder 110 for moving the frame back and forth. A door 60 of a cover 50 is opened to carry in a material B1 and carry out a finished product P1.

Abstract: A technique of easy manufacture of a column and a bed of a machine tool in a short time is provided by having an assembly structure of sheet metal members. A column body of the machine tool is constituted by combining a front member with a rear member 130 and mounting a side cover. Its inside is reinforced by a plurality of ribs 150, 160. Each of the members is made by precision laser machining of sheet plate materials. The column body is assembled by inserting projection portions provided on one member into slits formed on the other member.

Abstract: The invention provides an improved drain structure of a cutting fluid supplied to a spindle of a milling spindle. The milling spindle 100 comprises a spindle 20 supported within a housing via a bearing 16, and a drawbar 24 having a through coolant passage 22. The cutting fluid C1 passing through the rotary joint 40 and 50 is sent to the through coolant passage 22, but a portion thereof is collected in a drain chamber 110. When the pressure within the drain chamber rises, the drain device 150 pushes open the ball 160 resisting against the spring 170, and the cutting fluid C1 is discharged to the exterior.

Abstract: The invention provides an improved seal structure of cutting fluid supplied to a spindle of a milling spindle. The milling spindle 100 comprises a spindle 20 supported within a housing via a bearing 16, and a drawbar 24 having a through coolant passage 22. The cutting fluid C1 passing through the rotary joint 40 and 50 is sent to the through coolant passage 22, but a portion thereof is collected in a drain chamber 105. A rotation member 110 is attached to a rear end portion of the spindle 20, which is equipped with a labyrinth device 150 having a lip seal member 152. An air supply member 120 has two air seal members 142 and 144, and air A1 is sent toward the labyrinth device 150, by which an air seal is formed.

Abstract: The invention provides a focus adjuster for laser beam machine which adjusts focus by detecting reflected light of a laser beam in a laser beam machine. A laser beam outputted from a laser oscillator device 550 is reflected by a mirror 570 via an output mirror 560 and introduced into a laser machining tool. The laser beam collected by a machining lens 62 is reflected by a reflector plate M1 and sensed by a reflection detector 580. Automatic focus adjustment is achieved by sensing output of the reflected light as well as changes in focal position due to contamination of the machining lens 62.

Abstract: A laser processing machine is provided in which a machining tool is automatically exchanged with a laser processing tool to be mounted to a processing head thereof to perform machining operations such as tapping to works. A machining tool 70 which is exchangeably clamped to a mounting section 510 of a processing head 50 of a laser processing machine has a body 720 and a piston member 730 in the body 720, and the piston member 730 supports an air motor 740, a reducer 750, a tool chuck 760, and a tap 762. Air is sent to the air motor 740 from an air source 551b by switching a valve, and an assist gas for a normal or reverse rotation is sent from an assist gas source 554b to the upper portion of the piston member 730, so that a tap is lowered to perform tapping to a work.

Abstract: A technique of easy manufacture of a column and a bed of a machine tool in a short time is provided by having an assembly structure of sheet metal members. A column body of the machine tool is constituted by combining a front member 110 with a rear member 130 and mounting a side cover. Its inside is reinforced by a plurality of ribs 150, 160. Each of the members is made by precision laser machining of sheet plate materials. The column body is assembled by inserting projection portions provided on one member into slits formed on the other member.

Abstract: A joint structure for directly joining a plurality of pipes is provided. A first pipe 10 has a joined end face 11 obtained by laser machining at a predetermined angle to an axis and a tenon 12 formed on a joined end face. A second pipe 20 has a joined end face 21 obtained by laser machining at a predetermined angle to an axis and a mortice 22. By fitting the tenon 12 of the first pipe 10 to the mortice 22 of the second pipe 20, a joint structure of the two pipes 10, 20 is formed. The joined end face 11 of the first pipe 10 and the joined end face 21 of the second pipe 20 are on surface contact over the entire thickness of the pipe.

Abstract: The invention provides a device which optically checks a nozzle tip of a laser machining tool. A camera unit 450 which is raised and lowered in opposing relation to a nozzle 65 of a laser beam machine has a camera chamber 454 and is sealed by protective glass 456, where the camera chamber 454 contains a CCD camera body 460 and lens 462. While a ring light 470 illuminates a surface of the nozzle 65, the CCD camera body 460 checks the nozzle 65 optically.

Abstract: In an automatic chuck jaw change system, a combined machining lathe capable of positioning with high precision and a robot with lower positioning precision than the combined machining lathe cooperate to automatically change a chuck jaw. The system includes a robot disposed in front of the combined machining lathe, and the robot can be selectively mounted on a front end of an arm thereof with a work hand for operating a work, a chuck jaw, and a nut runner hand for operating a drive mechanism of the chuck. The robot cooperates with a tool for jaw mounted on a tool spindle of the combined machining lathe to automatically change a chuck jaw of a main spindle.

Abstract: A method for performing piercing preferentially on a laser beam machine by taking advantage of a capability to change laser machining tools automatically. A laser beam machine is equipped with a device for changing a torch and nozzle automatically. The laser beam machine is equipped with a means of selecting preferential treatment of piercing after nesting data is prepared by a CAM or NC system and performs piercing alone in favor of cutting by changing to a special-purpose piercing tool.

Abstract: A device for detecting the position of a seam on a welded pipe in a three-dimensional laser beam machine for processing pipes. The three-dimensional laser beam machine has a chuck 62 for holding, rotating and axially moving a cylindrical pipe 400. A weld seam detection device 100 is equipped with a sensor head 110 provided on a laser processing main body 30. The sensor head 110 has a master lever 120 that moves along an inner wall surface 410 of the cylindrical pipe 400 and a sensor lever 140. When the cylindrical pipe 400 is rotated and the sensor lever 140 contacts the weld seam, the movement of the sensor lever 140 is detected by a micro switch 150, which sends a signal to an NC device 90 by which the weld seam position is recognized.

Abstract: The present invention provides a tool holder interchangeably attached to a machine tool such as a combined machining lathe. A combined machining lathe 1 comprises main spindles 20 and 30 for gripping a workpiece, and a machining main spindle head 50 which rotates around a B axis. There are provided stockers S1 and S2 inside the lathe, and tool holders 200 and 300 are respectively stored in the stockers S1 and S2. The tool holder 200 comprises a taper shank portion 230 of a main shaft in a housing 210 and four pull studs PS2 around the taper shank portion 230 of a main shaft, and is gripped by collet chucks of the machining main spindle head 50. Rotation of the taper shank portion 230 of a main shaft is transmitted to a shaft 250 via a gear mechanism, to drive a drill tool 252 to drill a deep hole.

Abstract: A machining unit that is supported on a machine tool and machines a workpiece by a revolving tool with a main spindle section being driven and rotated includes an eccentric rotational section, a tool holder, a tool revolution-radius changing mechanism, and a cutting-edge-orientation correcting mechanism. The eccentric rotational section is disposed on the main spindle section, and is rotatable about an eccentric axis that is located eccentrically at any distance in a radial direction of the main spindle section from a rotation center of the main spindle section. The tool holder is disposed on the eccentric rotational section, and supports the tool. The tool revolution-radius changing mechanism moves the tool in the radial direction, and changes the radius of the revolution of the tool by rotating the eccentric rotational section about the eccentric axis.

Abstract: A multitasking workpiece machining apparatus includes a pair of workpiece support devices supporting an elongated workpiece, first and second headstocks at positions outside of the workpiece support devices. The second headstock is capable of moving closer to and apart from the first headstock. Each workpiece support device respectively includes a travel drive device traveling between the first and second headstocks. A numerical control unit controls travel of each workpiece support device by synchronously controlling each travel drive device.