Patent ID: 11911849
Assignee: SUBARU CORPORATION
Field: Machine tools (Mechanical engineering)
Classification: CPC B  C | IPC B  C

Claim 8:
9. A laser peening processing apparatus comprising:
a laser oscillator configured to oscillate a laser light; and
a nozzle including a straightening part disposed at a distal end of the nozzle and configured to straighten a flow of a liquid, the nozzle being configured to:
focus the laser light passing through the nozzle and irradiate a surface to be processed of a workpiece with the focused laser light while making the liquid passing through the nozzle flow toward the surface to be processed; and
eject the liquid from the distal end of the nozzle toward the surface to be processed,

wherein the straightening part includes:
a straightening vane that is configured to pass liquid and the laser light through a gap thereof; and
a cylindrical structure disposed:
at a distal end of the nozzle; and
adjacent to and in communication with the straightening vane such that a hollow flow path of the cylindrical structure receives the flow of the liquid directly from the gap of straightening vane,

wherein the gap of straightening vane has a cross section with a star shape in a flow direction of the liquid,
wherein the hollow flow path of the cylindrical structure of the straightening part has a circular cross section different than the star shape of the straightening vane,
wherein a diameter of the hollow flow path of the cylindrical structure of the straightening part becomes gradually larger toward the distal end of the nozzle, and
wherein a width of the hollow flow path of the cylindrical structure of the straightening part at the distal end of the nozzle is greater than a width of the gap of straightening vane at a distal end of the gap of straightening vane, and
wherein the star shape of the cross section of the gap of the straightening vane is heptagram star polygon.