| 摘要 |
PURPOSE:To reduce occurrence of chippings and to improve cut surface precision by applying a multistage cutting work on the lower part of a work at a speed lower than a speed during a work to cut the upper part thereof. CONSTITUTION:When ceramics 2 being a rigid brittle material is cut by using a diamond grinding stone 1, a cutting work is effected through a multistage cutting work and from the position, located down by a distance of hundreds mum, of a lower part at a speed lower than the feed speed of an upper part. This method reduces an amount of produced chippings to approximate 10mum or less and also reduces straightness of a cut surface to approximate 3mum/60mm. A machining amount at after-processing, such as a finish work after cutting, can be reduced from about 100-200mum to approximate 10mum. |
