Hole in the inner port knife? The hole in the bore is the same
The main cutting movement is finished by the workpiece, the centrifugal force of the workpiece is large, the machining ellipticity and the turings are easy to produce.
Is the mouth hole bore bed, workpiece is fixed, the cutting movement and feed movement was done by the cutting tool, so the machining accuracy is higher, especially for heavy, large, precision parts, such as diesel engine cylinder block, large gear case bed processing hole must be in the chamber.
Although they are all holes, they are different. The workpiece is rotated when it is turned, and this rotation is the main movement of the process. The rotation is the main movement of the machining process, which is the difference between turning and boring.
