Kabushiki Kaisha Toshiba

Fuji Jukogyo Kabushiki Kaisha Toshiba Corporation

Subaru Corporation

Toshiba Energy Systems & Solutions Corporation

Itaru Chida

Hiroshi Nomura

Satoshi Okada

Hiroshi Ohno

Masahiro Yoshida

Masayuki Itoh

Satoshi Yamamoto

Katsunori Shiihara

Takeshi Takahara

Kota Nomura

Takuya Uehara

Hidekazu Sasaki

Keiichi Hirota

Takahiro Miura

Makoto Ochiai

Hidehiko Kuroda

Tetsuo Sakai

Akira Ito

Hiroya Ichikawa

Mitsuaki Shimamura

Masaki Yoda

Takeshi Maehara

Hiroyuki Miyasaka

Yuji Sano

Itaru Murakami

Yoshiaki Ono

Jun Semboshi

Kentaro Tsuchihashi

Setsu Yamamoto

Toru Onodera

Tetsuro Aikawa

Fukashi Osakata

Ryoichi Saeki

Akira Tsuyuki

Takafumi Adachi

Yamato Kaminaka

Keizoh Honda

Hiroyuki Takehisa

Yasuaki Tokunaga

Tomoki Suetake

According to one embodiment, a laser processing device includes a light irradiation section, and an optical element. The optical element includes a first transparent member provided via a gap with a tip of the light irradiation section, and a second transparent member. The first transparent member includes a first surface opposed to the tip of the light irradiation section, and a second surface provided so as to be connected to the first surface. The second transparent member includes a flat surface and a convex surface, the flat surface being provided so as to be opposed to the second surface of the first transparent member, the light passed through the first transparent member passing through the convex surface. An optical axis of the laser beam passing through the first surface and an optical axis passing through the convex surface are different from each other.

Laser processing device

One embodiment of the laser processing apparatus is for surface treatment by supplying liquid to a surface of the target member and irradiating pulsed laser light to the surface of the target member via the liquid. The apparatus includes a laser oscillator and a liquid supply. The laser oscillator irradiates the laser light to the surface through the liquid via an optical window. The liquid supply is configured to supply the liquid to the surface of the target member via a flow path passing on an outer surface of the optical window. When the liquid is in contact with a laser light emission surface of the optical window, the laser light emission surface transmits the laser light. When the liquid is not in contact with the laser light emission surface, the laser light emission surface reflects the laser light.

Laser processing apparatus and laser processing method

An embodiment is to provide a laser light irradiation apparatus and a laser peening treatment method, by which even a member to be processed, existing in a narrow portion, can be easily processed by laser peening. The laser light irradiation apparatusaccording to the embodiment includes: an optical fiberthrough which laser light is guided; a condensing lensthat is placed on one end of the optical fiber, the condensing lens and the optical fiber defining the light path of the laser light; a guidethat retains the optical fiber; and a movement mechanismfor changing the position of the optical fiber, wherein the light path of the laser light guided through the optical fiber is emitted at an angle changed to more than 0&#xb0; and less than 90&#xb0; with respect to the central axis of the optical fiber by the condensing lens.

Laser light irradiation apparatus and laser peening treatment method

A laser irradiation device in which laser light is adjusted to create a laser beam, including a protective glass window arranged in an emission region that emits the laser beam; a reflection mechanism that passes the laser beam and reflects visible light; a wavelength-dependent optical screening mechanism that cuts off light of a wavelength region other than visible light from the light that is reflected by the reflection mechanism; image pickup camera configured to capture the visible light reflected with the reflection optical element; and an image adjustment lens unit that adjusts an image in the visible light that is input from the wavelength-dependent optical screening mechanism. The wavelength-dependent optical screening mechanism is provided between the reflection optical element and the image camera.

Laser irradiation device and method of diagnosing the health of a laser irradiation head

A laser irradiation apparatus which is provided with: an environment isolation container, which houses a laser oscillator and is disposed in water; a laser irradiation head, which collects laser beams and irradiates a part to be machined with the laser beams; a light guide section which transmits the laser beams from the laser oscillator to the laser irradiation head; a power supply apparatus which supplies the laser oscillator with power; a cooling water supplying apparatus, which supplies the laser oscillator with cooling water through a cooling water supplying path; and a temperature sensor which measures the temperature inside of the environment isolation container. The temperature and/or the flow quantity of the cooling water to be supplied from the cooling water supplying apparatus is controlled on the basis of the measurement results obtained from the temperature sensor.

Laser irradiation apparatus and laser machining method

A laser irradiation apparatus of the embodiment includes: a laser light transmission mechanism to guide laser light from a laser light source and emit the laser light from a laser light emission part; a condensing mechanism to condense the laser light; a pipe state casing to house and hold the condensing mechanism inside thereof and have an opening part to irradiate the laser light; a fluid supply mechanism to supply a fluid into the casing to emit the fluid from the opening part; a positioning mechanism provided at the casing to keep a distance from the condensing mechanism to the processing object constant by being brought into contact with the processing object; and a fluid guide mechanism to guide the fluid emitted from the opening part to flow between the casing and the processing object along an axial direction of the casing.

Laser irradiation apparatus and laser irradiation method

Disclosed is a coating method using a plasma shock wave, the method including the steps of: irradiating a pulse laser to a first surface of a mixed layer obtained by mixing powders and resin to generate a plasma, the mixed layer being formed on a second surface of a substance to be coated; striking the powders on the second surface by using a shock wave of the plasma; and forming a coat of the powders on the second surface.

Coating method using plasma shock wave and method for manufacturing coated substance

A stress treatment device has an operating unit including a head unit performing peening by irradiating an inside of a hole formed in a structure with laser to form a compressive stress region in the hole; a laser unit having an optical fiber guiding the laser to the head unit; a jetting unit jetting liquid into the hole; and a support part supporting the optical fiber in a manner of allowing the jetted liquid to flow through and being fixed in the head unit.

Stress treatment device, operating system, and method of making turbine

A laser maintenance apparatus including a laser system which includes an optical system for emitting, in a first irradiation condition, a generation laser beam for generating an ultrasonic wave in a portion of an object on which maintenance is to be performed, and including a laser source configured to generate and detect a detection laser beam which interacts with the ultrasonic wave generated by the laser light beam in the first condition. The laser maintenance apparatus also includes a light transmitting device for transmitting laser light emitted from the laser system, a laser irradiation device for irradiating laser light transmitted by the light transmitting device to the object portion, and a transporting/scanning mechanism for transporting the light transmitting device and the laser irradiation device to a portion near the object portion, and scanning over an arbitrary range at the object portion.

Laser-based maintenance apparatus

An object of the present invention is to provide a thermal spraying robot system capable of automatically determining spraying conditions according to the shape of a workpiece. Shape data on a workpiece ( ) and material data on a thermal spray material are entered by operating a data input unit ( ). A spray condition database stores a plurality of spray parameters for kinds of thermal spray materials and for qualities of sprayed coatings. A path calculating unit ( ) selects values of spray parameters from the spray condition database ( ), and then calculates a path for a thermal spraying gun ( ) according to a predetermined program on the basis of the shape data on the workpiece and the selected values of the spray parameters. The path calculating unit ( ) decides whether or not a thermal spraying operation can be carried out by moving the thermal spraying gun along a calculated path. If it is decided that the thermal spraying operation is feasible, a thermal spraying apparatus carries out the thermal spraying operation in which the thermal spraying gun is moved along the calculated path.

Spraying robot system and spraying method wherein spray conditions are determined by using computer

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Kawasaki, Japan

Itaru Chida