APPARATUS AND METHOD FOR CENTERING A LASER WELDING PROBE WITHIN A TUBE

摘要

The inner side in the laser welding probe body (600d) is formed so that the positioning in the tube is configured to an apparatus for welding an inner surface of the tube. In order to catch the center of the laser welding probe body within the circular space 534 is formed between the inner surface and the laser welding probe body of the tube, the centering mechanism that depends on the fluid pressure is used. In one embodiment, it is configured to hold the seal 532 in a set to the center apparatus. In another embodiment, in response to a fluid pressure comprises the centering ball (608a) of one set to perform a centering of the laser welding probe body within the circular space 534 to the centering mechanism. By the protective gas used during the laser welding operation is the fluid pressure can be formed.