# US 2017/0282298 A1 · Laser peening processing device and laser peening processing method > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 2017/0282298 A1 - Document ID: US20170282298A1 - Status: Published application - Kind: A1 - Application number: 15/423,454 - Filed: 2017-02-02 - Published: 2017-10-05 - Earliest claimed: 2016-03-30 - Assignees: Fuji Jukogyo Kabushiki Kaisha - Applicants: Fuji Jukogyo Kabushiki Kaisha - Inventors: Mayu Nakano; Takafumi Adachi - Web page: https://patentgrep.com/patent/US20170282298A1 ## CPC - B23K 26/356: by shock processing - B23K 26/009: {using a non-absorbing, e.g. transparent, reflective or refractive, layer on the workpiece (using a mask on the workpiece B23K26/0661)} - B23K 26/0093: {combined with mechanical machining or metal-working covered by other subclasses than B23K} - B23K 26/02: Positioning or observing the workpiece, e.g. with respect to the point of impact; Aligning, aiming or focusing the laser beam - B23K 26/08: Devices involving relative movement between laser beam and workpiece - B23K 26/146: the fluid stream containing a liquid - C21D 10/005: {by laser shock processing} - B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM - C21D: MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass C23F17/00; unidirectional solidification of eutectic materials or unidirectional demixing of eutectoid materials C30B) ## Abstract According to one implementation, a laser peening processing device includes a laser peening processing device includes a laser oscillator, a nozzle and an inclining structure. The laser oscillator emits laser light. The nozzle condenses and irradiates the laser light toward a surface to be processed of a workpiece, with injecting liquid toward the surface to be processed. The inclining structure inclines at least one of the nozzle and the workpiece to make an injection direction of the liquid be different from a normal direction of the surface to be processed. The air bubbles arising by at least one of collision between the liquid and the surface to be processed and shock by irradiation of the laser light on the surface to be processed are flowed in a direction depending on an inclined direction of the surface to the injection direction of the liquid. ## Claims ### Claim 1 A laser peening processing device comprising: a laser oscillator that emits laser light; a nozzle that condenses and irradiates the laser light toward a surface to be processed of a workpiece, with injecting liquid toward the surface to be processed; and an inclining structure that inclines at least one of the nozzle and the workpiece to make an injection direction of the liquid be different from a normal direction of the surface to be processed, air bubbles arising by at least one of collision between the liquid and the surface to be processed and shock by irradiation of the laser light on the surface to be processed being flowed in a direction depending on an inclined direction of the surface to the injection direction of the liquid. ### Claim 2 (depends on 1) The laser peening processing device according to claim 1, wherein the injection direction of the liquid is same as an irradiation direction of the laser light. ### Claim 3 (depends on 1) The laser peening processing device according to claim 1, wherein the injection direction of the liquid and an irradiation direction of the laser light are each vertically downward. ### Claim 4 (depends on 1) The laser peening processing device according to claim 1, further comprising: a moving structure that slides the at least one of the nozzle and the workpiece relative to another, wherein the inclining structure inclines the at least one of the nozzle and the workpiece to make an inclined angle of the surface to be processed, to the injection direction of the liquid, be constant or within a predetermined range during sliding the at least one of the nozzle and the workpiece, the at least one of the nozzle and the workpiece being inclined based on three-dimensional information showing a shape of the surface to be processed. ### Claim 5 (depends on 1) The laser peening processing device according to claim 1, further comprising: a pressure control structure that controls a pressure of the liquid to reduce stagnation of the liquid, the stagnation arising due to the collision between the liquid and the surface to be processed. ### Claim 6 (depends on 1) The laser peening processing device according to claim 1, wherein the inclining structure is composed using a robot arm that can variably control an inclined angle of the surface to be processed to the injection direction of the liquid, the robot arm holding the workpiece or a jig for attaching the workpiece. ### Claim 7 (depends on 1) The laser peening processing device according to claim 1, wherein the inclining structure is coupled to the nozzle and variably controls an inclined angle of the nozzle to the surface to be processed. ### Claim 8 A laser peening processing method comprising: emitting laser light; producing a product or a semi-product by condensing and irradiating the laser light toward a surface to be processed of a workpiece, with injecting liquid toward the surface to be processed; and inclining at least one of the nozzle and the workpiece to make an injection direction of the liquid be different from a normal direction of the surface to be processed, air bubbles arising by at least one of collision between the liquid and the surface to be processed and shock by irradiation of the laser light on the surface to be processed being flowed in a direction depending on an inclined direction of the surface to the injection direction of the liquid. ### Claim 9 (depends on 2) The laser peening processing device according to claim 2, wherein the injection direction of the liquid and the irradiation direction of the laser light are each vertically downward. ### Claim 10 (depends on 2) The laser peening processing device according to claim 2, further comprising: a moving structure that slides the at least one of the nozzle and the workpiece relative to another, wherein the inclining structure inclines the at least one of the nozzle and the workpiece to make an inclined angle of the surface to be processed, to the injection direction of the liquid, be constant or within a predetermined range during sliding the at least one of the nozzle and the workpiece, the at least one of the nozzle and the workpiece being inclined based on three-dimensional information showing a shape of the surface to be processed. ### Claim 11 (depends on 2) The laser peening processing device according to claim 2, further comprising: a pressure control structure that controls a pressure of the liquid to reduce stagnation of the liquid, the stagnation arising due to the collision between the liquid and the surface to be processed. ### Claim 12 (depends on 2) The laser peening processing device according to claim 2, wherein the inclining structure is composed using a robot arm that can variably control an inclined angle of the surface to be processed to the injection direction of the liquid, the robot arm holding the workpiece or a jig for attaching the workpiece. ### Claim 13 (depends on 2) The laser peening processing device according to claim 2, wherein the inclining structure is coupled to the nozzle and variably controls an inclined angle of the nozzle to the surface to be processed. ### Claim 14 (depends on 3) The laser peening processing device according to claim 3, further comprising: a pressure control structure that controls a pressure of the liquid to reduce stagnation of the liquid, the stagnation arising due to the collision between the liquid and the surface to be processed. ### Claim 15 (depends on 3) The laser peening processing device according to claim 3, wherein the inclining structure is composed using a robot arm that can variably control an inclined angle of the surface to be processed to the injection direction of the liquid, the robot arm holding the workpiece or a jig for attaching the workpiece. ### Claim 16 (depends on 4) The laser peening processing device according to claim 4, further comprising: a pressure control structure that controls a pressure of the liquid to reduce stagnation of the liquid, the stagnation arising due to the collision between the liquid and the surface to be processed. ### Claim 17 (depends on 4) The laser peening processing device according to claim 4, wherein the inclining structure is composed using a robot arm that can variably control the inclined angle of the surface to be processed to the injection direction of the liquid, the robot arm holding the workpiece or a jig for attaching the workpiece. ### Claim 18 (depends on 5) The laser peening processing device according to claim 5, wherein the inclining structure is composed using a robot arm that can variably control the inclined angle of the surface to be processed to the injection direction of the liquid, the robot arm holding the workpiece or a jig for attaching the workpiece. ### Claim 19 (depends on 8) The laser peening processing method according to claim 8, wherein the injection direction of the liquid is same as an irradiation direction of the laser light. ### Claim 20 (depends on 8) The laser peening processing method according to claim 8, wherein the injection direction of the liquid and an irradiation direction of the laser light are each vertically downward.