抄録
Groove forming for O-ring use was investigated experimentally using a CNC profile rolling machine. The geometry of the groove investigated was 5mm in width and 4mm in depth. The diameter of the shaft (S45C) was 40mm. Optimal groove forming conditions found were as follows: die shape: semi-circular; forming time: 18.3 seconds; number of revolutions of die: 12rpm. When the number of revolution of die was less than 14.5, flaking at the side walls was successfully suppressed.
