| 摘要 |
A method for manufacturing a splined member, such as a male or female splined shaft, having a low friction coating applied thereto includes the initial step of providing a length of cylindrical stock having a predetermined outer diameter. The end of the cylindrical stock is then machined by any conventional process to form a preform including an end portion and a neck portion. Next, the end portion of the preform is subjected to a cold working process by a conventional roll forming machine or similar tool to form a plurality of splines about the circumference thereof. The cold working process is effective to re-shape the end portion of the preform to form the splines without the removal of any material therefrom. As a result, each of the splines is formed having a generally involute cross sectional shape, wherein opposed sides of the splines are relatively gently curved between the inner roots and the outer ends thereof. The splines define a major diameter that is somewhat larger than the initial outer diameter of the preform and a minor diameter that is somewhat smaller than the initial outer diameter of the preform. Thereafter, the splines and the neck portion of the preform are coated with a conventional low friction material to form the splined tube shaft. A broaching machine or similar apparatus is used to precisely shape the solidified low friction material about the splines. |
