| 摘要 |
PURPOSE:To increase the mass-productivity of precise parts, by controlling the grinding when a calculated value reaches a prescribed value, in a method of controlling the in-process sizing when the inner or outer diameter of an annular work is to be ground. CONSTITUTION:In case the inner diameter of the annular work 1 is to be ground by a rotating grind stone 3, the grind stone 3 is moved in the direction shown by the arrow by a cutting and driving motor 16, the thickness is detected every moment by a probe 6 and a detector 7, and a thickness H1 is obtained by a thickness determining and checking circuit 10. The data H1 and a standard outer diameter D0 are both inputted into an inner diameter arithmetic circuit 12 to calculate D0-2H1=d, a signal of d is given to a comparator 1, where it is compared with an inner diameter finish size d0, and when they coincide, a command is issued to a monitor control circuit 15 to stop the cutting and driving motor 16. According to the method, precise parts can be mass-produced. |
