| 摘要 |
PROBLEM TO BE SOLVED: To provide a fillet rolling machining device capable of positively and precisely variable controlling a pressurizing force to be given to a fillet groove part in a peripheral direction of a fillet groove part. SOLUTION: This device applies rolling machining to a fillet groove part F of a crank pin part P with fillet rollers 25a, 25b backed up by a backup roller 22. A guide groove 24 is formed on an outer periphery of the backup roller 22 together with a partition wall 35, and width of the guide grove 24 is gradually changed in a perimeter direction together with width dimension of the partition wall 35. During rotation of the backup roller 22, a roller contact angleβformed by shaft vertical planes of fillet rollers 25a, 25b and a shaft vertical plane of the backup roller 22 is positively changed according to the change of the width of the guide groove 24. COPYRIGHT: (C)2006,JPO&NCIPI |
