THREE DIMENSIONAL CAM AND MANUFACTURE THEREOF

摘要

PROBLEM TO BE SOLVED: To improve a durability while highly ensuring the productivity of a three dimensional can whose cam profile shape is changed along a rotary shaft. SOLUTION: A three dimensional cam 10, the shape of whose cam profile surface 10a is changed along the rotary shaft A is produced by a sintered net shape. By setting the sintered density of a sintered material to 7-7.4 g/cm3 at the sintered net shape time, the air hole ratio of the cam profile surface 10a is made to 5-10%.