| 摘要 |
<p>PROBLEM TO BE SOLVED: To dispense with a new parts, and to firmly fix a fin to a tube as closed during the winding in fixing a spiral fin. SOLUTION: A fin 1 is joined with a tube 2 by a laser beam emission tube 32 held by an articulated robot 33 in a condition where the fin 1 initially wound around the tube 2 by an initial winding roller is pressed against the tube by a clamp roller, and after the fin winding of the prescribed quantity, the laser beam emission tube 32 is driven to join the fin with the tube in the condition where the pressing against the outer circumference of the fin is performed by the clamp roller again at the winding terminal. The spiral fin can be firmly fixed to the tube without generating loosening by the residual stress in the fin 1.</p> |
