Patent ID: 7145100

Claim:
A laser processing robot comprising: a manipulator including an arm section having a wrist portion, said manipulator provided with a plurality of control axes; a laser processing tool attached to said wrist portion of said manipulator; an optical fiber for transmitting a laser beam toward said laser processing tool; and a line passage formed inside said arm section of said manipulator and accommodating said optical fiber; wherein said arm section includes: a first member disposed fixedly relative to a first control axis at a side opposite to said wrist portion; and a second member supported on said first member and rotatable about said first control axis, said second member provided at a distal end thereof with said wrist portion; said line passage being formed continuously within said first member and said second member, an optical fiber inlet port of said line passage being provided in said first member and an optical fiber outlet port of said line passage being provided in said wrist portion of said second member; wherein said laser processing tool includes: an attachment section adapted to be attached to said wrist portion and rotatable about a second control axis perpendicular to said first control axis; a nozzle section extending from said attachment section and provided with a laser beam passage extending in a direction intersecting an axial line of said second control axis; and a reflecting section arranged within said attachment section for reflecting a laser beam emitted from said optical fiber and directing the laser beam toward said laser beam passage; and wherein an emitting end face of said optical fiber is positioned between said optical fiber outlet port provided in said wrist portion and said reflecting section of said laser processing tool.