| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding holder capable of securing the sufficient amount of lubricating oil and suppressing skewing even when the holder is shaken in a diameter direction. SOLUTION: A welding holder includes the peripheral direction end surface 2b of a pocket hole 2 provided roughly in parallel with the normal surface 2d of the peripheral direction center part of the pocket hole. In this welding holder, lubricating oil is easily supplied as shown by an arrow and, even when the holder is shaken in a diameter direction, roller skewing is suppressed. The welding holder is manufactured while the peripheral direction end surface of the pocket hole is inclined by a specified angle before welding or shaving is executed in the pocket hole after welding. |
