Abstract: A high-speed axial flow gas laser oscillator has plurality of laser tubes arranged parallel to and interconnected with one another to form a plurality of parallel, straight length sections for resonating and amplifying a laser gas, electrode means associated with the laser tubes for ionizing and thereby incidently heating a laser gas circulated therethrough, means for circulating the laser gas through the laser oscillator, and heat exchanger means for cooling the laser gas circulated through the laser oscillator. A plurality of gas recirculation paths are positioned on opposite sides of the laser gas circulating means and are disposed symmetrically with respect to the laser gas circulating means and the parallel, straight length sections formed by the laser tubes.

Abstract: The present invention relates to a bending machine having a bottom die on which a sheet metal workpiece is supported horizontally in a frame body and an upper die which secures the workpiece by pressing against the bottom die. A bending beam is freely movable in the vertical direction to bend the edges of the workpiece when the workpiece is secured between the top and bottom dies. The bending machine also comprises a die changing system having a plurality of elevator bases each formed with a plurality of stages which store top dies separately and a device for controlling the elevator bases individually to prepare any combination of the top dies stored on the stages and a die exchanging device for furnishing the combination of the top dies in the proper position in the bending machine by transferring it from the stages.

Abstract: The present invention relates to a bending machine having a bottom die on which a sheet metal workpiece is supported horizontally in a frame body and an upper die which secures the workpiece by pressing against the bottom die. A bending beam is freely movable in the vertical direction to bend the edges of the workpiece when the workpiece is secured between the top and bottom dies. The bending machine also comprises a die changing system having a plurality of elevator bases each formed with a plurality of stages which store top dies separately and a device for controlling the elevator bases individually to prepare any combination of the top dies stored on the stages and a die exchanging device for furnishing the combination of the top dies in the proper position in the bending machine by transferring it from the stages.

Abstract: The present invention relates to a press machine that has a vertically movable ram for supporting upper or lower bending tools, said ram being integrally provided with an operation member, and a position determining member having an adjustable position located at a suitable point on said press machine such that when the operation member on the ram contacts the position determining member, the vertical movement of the ram is stopped. The press machine further includes a screw mechanism that is screw-coupled to the position determining member and is movable in an axial direction, a pulse motor drive unit which turns the threaded bolt, and a manual pulse generator for operating the pulse motor from a remote location.

Abstract: The present invention relates to a specific holding structure of a slab geometry crystal for a total internal reflection, slab geometry laser (otherwise known as face pumped laser) device. Both sides of the crystal are held by side rails, and on both longitudinal end portions of the crystal o-ring backing flanges and box-shaped end pieces, respectively, are put on. Furthermore, an o-ring is put in between the end piece and the o-ring backing flange on each end portion of the crystal, and it is compressed to seal the crystal. This o-ring can be made of translucent elastomer. Accordingly, the slab geometry laser device that is compact and easy to remove from, or place into the pump station is provided.

Abstract: A flow control device in a laser generator has a flow control valve disposed opposite a ring member to form an orifice. Laser gas flows from an inlet port into the flow control device, through the orifice, through the flow control valve and into the laser tube. The flow control valve is moveable axially toward and away from the ring member to vary the orifice to control the flow of laser gas in the laser tube. The laser tube also has a sub-hole for a sub-flow of laser gas in the laser tube. A throttling valve is disposed in the flow control device to throttle the flow of laser gas in the sub-hole.

Abstract: A laser generator has a discharge unit which is freely mountable on and dismountable from the laser generator as an integral unit. The discharge unit includes a pair of laser tubes, a pair of flow control units, and a manifold block. Clamp blocks support the laser tubes against movement in the lateral and vertical directions and tapered liners allow adjustment of the height of the laser tubes. Hangers are included in the discharge unit so that the laser tubes may be suspended during mounting and dismounting.

Abstract: The present invention relates to a device in which a laser medium in a discharge space is excited by a discharge. The device includes a positive electrode and a plurality of negative electrodes in opposition, connected to a simmer power source and a main discharge power source. There is also a plurality of first stabilized resistances, which restrict the current of the simmer power source, each of which is respectively connected to one of the negative electrodes. There is also a plurality of first reverse current prevention elements, each of which is connected to the main discharge power source, and connected in parallel with one of the first stabilized resistances.

Abstract: The present invention relates to a bending press having an upper and a lower tool disposed on a frame, together with a hydraulic ram for bringing the upper and lower tools together. The upper tool comprises a fixed punch of an arcuate shape, and has a plurality of detachable punches that are detachably mounted on the fixed punch for changing the external shape of the punch.

Abstract: A laser tube holder allows axial alignment of the laser tube with a laser oscillator. An inner eccentric holder and an outer eccentric holder have eccentric outer surfaces and rotatably support a cylindrical laser tube joint holder on a support plate in the laser oscillator. When the eccentric holders are rotated the laser tube is axially displaced for alignment. Flanges on each of the eccentric holders are disposed on opposite sides of the support plate. An O-ring and a pressure ring disposed in a groove in one of the flanges allow adjustment of the pressure on which the eccentric holder are retained on the support plate.

Abstract: A cutting machine has a plurality of switches, each switch corresponding to a predetermined cutting speed for each of one of the various groups of materials to be cut, the materials having different machinablility qualities. One of a plurality of constant voltage output means are connected with one of each of the plurality of switches for changing the speed of the cutting tool responsive to the constant voltage output means.

Abstract: The present invention relates to a press machine that has a vertically movable ram for supporting upper or lower bending tools, said ram being integrally provided with an operation member, and a position determining member having an adjustable position located at a suitable point on said press machine such that when the operation member on the ram contacts the position determining member, the vertical movement of the ram is stopped. The press machine further includes a screw mechanism that is screw-coupled to the position determining member and is movable in an axial direction, a pulse motor drive unit which turns the threaded bolt, and a manual pulse generator for operating the pulse motor from a remote location.

Abstract: A method of and apparatus for controlling a grinding machine having a grinding wheel and a table for holding a workpiece to automatically perform desired operations in which data concerning the grinding characteristics of a plurality of grinding wheels and workpieces to be ground, as well as data concerning the operation to be performed, is inputted into a control unit containing a computer. The computer calculates the necessary information to perform the desired operation. The information is then converted into instructions for controlling the grinding machine to perform the desired operation.

Abstract: A tapping machine of the type in which the workpiece is automatically positioned, has a releasable connection of the worktable and carriage with the means for horizontally moving the worktable and the means for horizontally moving the carriage, so that the worktable and carriage may be released for manual operation. The tapping machine also has a means for detecting the position of the carriage and a means for detecting excessive thrust from the workpiece. In addition, the tapping machine may be provided with means for detecting the position of the worktable and a control device having a memory connected with the means for positioning the worktable so that when the worktable is manually positioned, the manual position may be entered and recorded in the memory of the control device. The tapping machine may thus be programmed so that multi-variety, small volume tapping is efficiently performed.

Abstract: A sheet or plate metal machining tool featuring a clamp for gripping the edge of the metal sheet and recognizing the said clamp is in a position to be struck by the tool's machining section. Upon such recognition, the clamp is capable of releasing the sheet and rotating out of the way of the machine tools.

Abstract: The present invention relates to an abrading machine comprising two abrading devices, a carrier member that is provided between the two abrading devices so as to be movable toward and away from them. Gripping elements are mounted on the carrier member so as to be located on opposite sides of the abrading devices to hold a workpiece to be abraded. A plurality of supporting members are also provided on the carrier member to rotatably swing up and down in order to support the workpiece as it is abraded by the different abrading devices. The gripping elements are pivotably attached to the carrier member and are designed to swing with respect to the carrier member in the direction of movement of the carrier member.

Abstract: A laser beam modulating method is characterized in that the distribution of power density of the laser beam is changed by closing and opening a passage for the laser beam from a laser resonator. An apparatus for carrying out the method includes a modulator for opening and closing the passage for the laser beam from the laser resonator to a laser processing head assembly.

Abstract: The present invention relates to a positioner for positioning a work piece such as a sheet or plate having first guide rails extending in the direction of the X-axis and second guide rails extending in the direction of the Y-axis, first and second carriages respectively movably supported on said first and second guide rails, clamp support members respectively supported by the first and second carriages and being movable in the direction perpendicular to the direction of the movement of the carriages, and clamping devices mounted to each clamp support member and adapted to clamp the work piece.

Abstract: The present invention relates to a backgauge device comprising a plurality of guide members extending substantially parallel to one another, a movable body supported on each guide member so as to be movable in the direction of the guide member, a drive mechanism connected to each guide member for independently moving each of the movable bodies along its respective guide member, a beam member extending transversely to the guide members, the beam member being supported by the movable bodies and said movable bodies being vertically adjustable independently of each other so that the beam member can be adjusted in both a horizontal and oblique manner.