| 摘要 |
PROBLEM TO BE SOLVED: To provide an inner spline member and its producing method in which a burr removing process is unnecessary and a working cost is reduced, in consideration of the conventional problem. SOLUTION: This inner spline member is provided with a cylindrical part 2 with a through-hole 29 formed and the spline parts 20 where peak parts 21 arranged along the axial direction and respective valley parts 22 disposed between the peak parts 21 on the inner surface of the cylindrical parts 2 are alternatively arranged. At the one end part 201 side of the cylindrical part 2, an annular excess thickness part 23 having a same inner size or a smaller inner size than the inner diameter size of the peak parts 21 and almost true circular inner shape, is arranged. The valley parts 22 are opened at the end part 202 side in the axial direction and also, closed at the one end 201 side with the annular excess thickness part 23. COPYRIGHT: (C)2004,JPO |
