| 摘要 |
PCT No. PCT/JP90/01627 Sec. 371 Date Jul. 15, 1991 Sec. 102(e) Date Jul. 15, 1991 PCT Filed Dec. 12, 1990 PCT Pub. No. WO91/08858 PCT Pub. Date Jun. 27, 1991.A heat eliminator intercepts a heat transmission in a laser robot which has a robot base (12), a robot arm (16) joined for swing motion to a robot swivel post (14) set upright on the robot base (12), a laser beam projecting unit (20) attached to an extreme end of the robot arm (16), and a drive motor (Mv) for driving the robot arm (16) for a swing motion through a precision transmission mechanism (30, 32, 34) inserted between the robot swivel post and the robot arm, from the drive motor to the precision transmission mechanism. The heat eliminator is provided with a bracket member (26) arranged between the precision transmission mechanism (30, 32, 34) and the drive motor (Mv) with one end in contact with the end surface of the drive motor on the side of the output shaft thereof and the other end in contact with the precision transmission mechanism, and an annular cooling water passage (50) formed in the bracket member (26). Cooling water is supplied into the annular cooling water passage (50) formed in the bracket member (26) from a cooling water source (70) for supplying cooling water to the laser beam conduit lines of the robot arm (16) to cool the bracket member (26) to absorb heat generated by the drive motor (Mv) by the bracket member (26), so that the heat transmission to the precision transmission mechanism (30, 32, 34) is intercepted.
|
