DIAGONAL CREATING METHOD FOR CREATING GEAR TOOTH FLANK WITH PREDETERMINED TWIST ON WHICH PREDETERMINED TOOTH-TRACE CROWNING IS APPLIED

摘要

PPROBLEM TO BE SOLVED: To provide a method for avoiding a twist or imparting the twist displaced from a natural twist in diagonal creating work on a tooth flank of a cylindrical gear with a pre-defined twist on which pre-defined tooth-trace crowning is applied. PSOLUTION: A size, a course and a diagonal angle ratio of a crowning process are adjusted to generate the twist with a simple tool, and a twist is generated by a simple tool and a twist necessary for a processed piece is overlapped on the natural twist. Further an additional portion of the crowning process is overlapped on part of a crowned portion of the processed piece on which the crowning process with the tool during machining by a diagonal creating process is applied, and thus a crowning process necessary for the processed piece is achieved. In that case, the additional portion of the crowning process is generated by varying a space between the tool during machining and the processed piece. PCOPYRIGHT: (C)2009,JPO&INPIT