CUTTING APPARATUS

摘要

A cutting apparatus including a holding unit for holding a workpiece, a cutting blade having a peripheral cutting edge for cutting a workpiece, a spindle unit including a spindle for rotating the cutting blade, a blade cover mounted on the spindle unit for covering the cutting blade, the blade cover having a bottom portion formed with a slit for allowing projection of a part of the cutting edge of the cutting blade, and a cutting fluid supplying unit for supplying a cutting fluid to the upper surface of the workpiece on both sides of the slit. The cutting fluid is not directly supplied to the cutting blade, but it is supplied to the upper surface of the workpiece. Accordingly, there is no possibility that the cutting fluid may be scattered by the rotation of the cutting blade.

主权项

1. A cutting apparatus comprising:
holding means for holding a workpiece; a cutting blade having a peripheral cutting edge for cutting said workpiece held by said holding means; a spindle unit including a spindle for rotating said cutting blade; a blade cover mounted on said spindle unit for covering said cutting blade, said blade cover having a bottom portion formed with a slit for allowing projection of a part of said cutting edge of said cutting blade; and cutting fluid supplying means provided outside said slit in the direction of its width for supplying a cutting fluid to the upper surface of said workpiece; said blade cover being formed with a discharge passage having one end communicating with said slit and the other end communicating with a discharge opening connected to a vacuum source, said discharge passage being located in said bottom portion on the leading side in the rotational direction of said cutting blade; whereby said cutting fluid supplied to the upper surface of said workpiece is sucked through said slit into said discharge passage in association with the rotation of said cutting blade, and next discharged through said discharge opening to the outside of said blade cover.