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Inventor:
Karube; Norio
Address:
Machida, JP
No. of patents:
36
Patents:












Patent Number Title Of Patent Date Issued
6555784 Laser machining apparatus April 29, 2003
A laser machining apparatus with a simplified laser beam transmitting network. Respective laser beams form laser generators LS#11 to LS#25 divided into groups of G1 and G2 are aggregated to fiber-optic cables H1 and H2 by confluence devices HC1 and HC2 and transmitted to a most upstr
6538231 Laser machining apparatus March 25, 2003
A plurality of laser generators are provided to be environmentally separated from a machining station, and temperature, humidity, vibration, cleanliness and the like are detected by a sensor, and displayed. When an abnormal environment is detected, machining operation is stopped imme
6055263 Solid-state laser oscillating device April 25, 2000
A solid-state laser oscillating device which is inexpensive and capable of obtaining a high power. A plurality of laser crystals (YAG laser crystals, etc.) (1a, 1b, 1c) are arranged along the optical axis of an optical resonator so as to maintain optical contact with one another. Adjacen
6034979 Laser oscillator March 7, 2000
A laser oscillator which uses a granular laser gain medium to secure a large gain volume and is capable of suppressing resonator loss caused by granular-boundary scattering. A suspension (1), which is obtained by dispersing a number of dielectric grains doped with a luminous element in
5966398 Blower for a gas laser October 12, 1999
In a gas laser blower, the lower end opening of the oil passage (14) extends below the liquid level of the oil reservoir (17), so that the internal chamber (18) of housing and the oil passage (14) are separated by the oil within the oil reservoir. Further, a cylindrical guard (24) is
5900171 Laser machining apparatus with head support by angularly movable expandable arms May 4, 1999
A laser machining apparatus capable of performing a high-speed and high-precision machining of a workpiece. One end of each of a first-axis and a second-axis expandable arms is supported on a fulcrum. The fulcrum is angularly movably within a predetermined range about the fulcrum in a
5856992 Gas laser blower January 5, 1999
In a blower for compulsorily circulating a laser gas for a gas laser apparatus, a shaft (2) of an impeller (1) is fitted with an intermediate member (66) that rotates together therewith, and rings (641, 642) are fitted individually in annular grooves (651, 652) formed on the intermed
5608754 Laser resonator March 4, 1997
A laser resonator allows internal optical mirrors to be cleaned easily and minimizes any contamination of the internal optical mirrors. The laser resonator has normally closed cleaning windows disposed immediately in front of output, rear, and folding mirrors for inserting a cleaning
5461636 Turbo blower for lasers October 24, 1995
There is provided a turbo blower for lasers which is capable of effectively cooling a shaft and bearings thereof. Oil held in a shaft support member is drawn up via an oil inlet port by a centrifugal force generated by rotation of the shaft, and passes through a cooling oil passage exten
5434383 Piercing method for laser processing July 18, 1995
A piercing method using a laser, in which the processing time is made shorter; a thermal runaway is prevented; and dispersion of the processing time is made smaller. According to this method, piercing operation is started with an initial pulse frequency P.sub.0 and an initial pulse duty
5379316 Laser discharge tube January 3, 1995
A laser discharge tube for preventing the flow out of an electrode material, deterioration of electrodes, and the like, caused by corona discharge, as well as for increasing power to be supplied to the laser discharge tube by improving the heat-dissipating property and insulating pro
5343013 Laser beam machine August 30, 1994
A laser beam machine for carrying out a machining operation by converging a laser beam emitted from a laser resonator and irradiating the converged laser beam onto a workpiece. A beam interceptor (21) is arranged across a light path extending from a total reflection mirror (2) of the las
5326957 Apparatus for and method of welding surface-treated metallic workpieces July 5, 1994
Surface-treated metallic workpieces such as zinc-plated steel plates are welded with high quality while they are being held in intimate contact with each other. An auxiliary gas including an oxygen gas is ejected from a space (7) around an electrode (1) through a nozzle (8) to a welding
5307367 Laser oscillating apparatus April 26, 1994
A laser oscillating apparatus equipped with a folded-type laser resonator designed to fold an optical axis by using a reflecting mirror (11) in addition to an output coupling mirror (4) and a rear mirror (10). The rear mirror (10) consists of a roof reflector having a ridge (10a) set at
5252805 Laser beam machining method October 12, 1993
A laser beam machining method for cutting a workpiece in accordance with a machining program composed of a succession of move commands and laser output commands. An angle of a machining path is calculated on the basis of a move command under execution and a subsequent read out move comma
5237150 Method of cutting workpiece with laser beam August 17, 1993
A thick workpiece is cut by a laser beam of high output power. A laser beam dominantly in a ring mode, with a central region thereof being hollow, is applied to the workpiece to cut the workpiece. The laser beam dominantly in the ring mode is effective to reduce optical distortion due to
5206873 Turbo blower for laser and laser oscillation device employing the turbo blower April 27, 1993
A turbo blower is used in combination with a gas laser oscillation device for machining, e.g., cutting off, workpieces. The turbo blower comprises a shaft (2) having an impeller (1) on one end thereof, a pair of bearings (5, 6) on which the shaft (2) is supported, and a motor (3, 4) for
5136136 Laser processing apparatus August 4, 1992
A laser processing apparatus including a laser oscillator, a beam expander, and a light converging system. An output-end-side optical component formed by the beam expander and the light converging system includes one light converging system having composite characteristics of the optical
5124997 Turbo blower for a laser device and a laser oscillator device June 23, 1992
A turbo blower for a laser device, including a shaft having an impeller on one end thereof, a pair of bearings, having inside grease spaces and supporting the shaft Non-contact seal portions are provided for preventing an outflow of grease, whereby other spaces for retaining the grease a
5111474 Laser oscillator device May 5, 1992
A laser oscillator device comprises an electric-discharge tube for producing an electric discharge in a laser gas contained in the electric-discharge tube for laser excitation, an optical resonator for effecting laser oscillation, and a gas circulating device having a gas blower and
5065330 Numerical control system for laser November 12, 1991
A numerical control system for a laser comprises a laser oscillator (1), an electric power supply (3) for driving the laser oscillator, and a computerized numerical control system (CNC) (5). The numerical control system includes sequence control means for controlling a sequence of op
5060238 Laser oscillator device October 22, 1991
A laser oscillator device comprises an electric-discharge tube (1) for producing an electric discharge in a laser gas contained in the electric-discharge tube for laser excitation, an optical resonator (2, 3) for effecting laser oscillation, and a gas circulating device having a gas
5022039 Gas laser oscillator device June 4, 1991
A turbo blower for a laser comprises a motor which includes a shaft (17) having a distal end to which a turbo impeller (16) is mounted, a pair of bearings (22,23) for supporting the shaft (17), a rotor (19(, and a stator (20). A squeezed-film damper (36,37) is provided around each of the
4984245 Laser oscillator device and method of filling laser gas in such laser oscillator device January 8, 1991
A laser oscillator device effects laser oscillation while circulating a laser gas with a rotary blower (6). The laser oscillator device has a fresh gas passage (16) separate from a passsage of the laser gas and having filters (9a, 9b), and ejector holes (17a, 17b) defined in said pas
4977574 Laser oscillator December 11, 1990
A laser oscillator is provided with a folded laser resonator which includes an output coupling mirror (4), a rear mirror (10) and folding mirrors (11,12). The rear mirror (10) has a maximum reflectivity with respect to a linear polarization component of the laser beam, in which the linea
4935933 Laser oscillator device June 19, 1990
A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions (1a, 1b) through a dielectric to produce a high-frequency discharge for laser pumping. The laser oscillator device includes high-frequency power supplies (26a, 26b) for converting a DC powe
4930135 Laser oscillator device May 29, 1990
A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions through a dielectric for producing a high-frequency discharge for laser pumping. Various interferences in the laser oscillator device are prevented to allow the device to produce a stable outpu
4921357 Laser oscillator device May 1, 1990
A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions through a dielectric for producing a high-frequency discharge for laser pumping. The laser oscillator device includes a DC power supply (16), and a high-frequency power supply (18, 19, 20, 21)
4910749 Laser oscillator device March 20, 1990
A laser oscillator device produces an electric discharge between confronting double helical electrodes for laser pumping. The electrodes (9b, 9b) are helically wound an integral number of turns, and start being helically wound at points which are .pi./n spaced about the axis of the d
4907241 Gas laser device March 6, 1990
A gas laser device in which a laser medium gas is circulated in a discharge tube and a laser beam is generated from the gas excited by a high-frequency electric discharge, includes a high-frequency power supply (3) serving as an electric discharge power supply and a plurality of refl
4887272 Laser oscillator device December 12, 1989
A laser oscillator device applies a high-frequency voltage to a plurality of discharge regions through a dielectric for producing a high-frequency discharge for laser pumping. The laser oscillator device has current detectors (CT2a, CT2b) for detecting currents flowing from high-frequenc
4866238 Gas laser device September 12, 1989
A gas laser device in which a laser medium gas is circulated in an airtight container and a laser beam is generated from the gas excited by an electric discharge, includes a main unit (10) including an air blower and a heat exchanger for circulating and cooling the gas, and a discharging
4852114 Gas laser device July 25, 1989
A gas laser device in which a laser medium gas is circulated in an airtight container and a laser beam is generated from the gas excited by an electric discharge, includes a main unit (10) including an air blower (13) for circulating the gas, heat exchangers (12a, 12b) for cooling the ga
4802184 High frequency discharge excited coaxial type CO.sub.2 laser January 31, 1989
A high frequency discharge excited coaxial type CO.sub.2 laser is provided, which has both the advantageous characteristic of high frequency excitation type, namely, small size and high efficiency, and the advantageous characteristic of coaxial type, namely, high quality beam mode. T
4800567 High-frequency-discharge excited gas laser January 24, 1989
A high-frequency-discharge excited gas laser is provided, which is adapted to excite a laser gas by applying of a high frequency voltage to electrodes. In order to increase the output capacity of the high-frequency-discharge excited gas laser without sacrificing its virtues of small
4258246 Rotor balancing device utilizing a laser beam March 24, 1981
Disclosed is a device for automatically correcting dynamic-unbalance of a rotor. The device utilizes a laser beam which moves in synchronism with movement of a detected unbalanced position on the rotor to burn off portions of the rotor until a balanced condition is achieved.










 
 
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