Metal Cutting Basics
1. Turning movement and formed surface
Turning movement: In the process of whistle cutting, in order to remove excess metal, it is necessary to make the workpiece and the tool perform relative cutting movement. The movement of cutting the excess metal on the workpiece with a turning tool on a lathe is called turning movement, which can be divided into main movements. and feed movement.
Main movement: The cutting layer on the workpiece is directly cut off to convert it into chips, thereby forming the movement of the new surface of the workpiece, which is called the main movement. When cutting, the rotational motion of the workpiece is the main motion. Usually, the speed of the main movement is higher, and the cutting power consumed is higher.
Feed movement: the movement of making the new cutting layer continuously put into cutting, the feed movement is the movement along the surface of the workpiece to be formed, which can be continuous movement or intermittent movement. For example, the movement of the turning tool on the horizontal lathe is continuous, and the feed movement of the workpiece on the planer is intermittent movement.
Surfaces formed on the workpiece: During the cutting process, machined surfaces, machined surfaces, and surfaces to be machined are formed on the workpiece. Finished surface refers to a new surface that has been removed from excess metal. The surface to be machined refers to the surface from which the metal layer is to be cut. Machined surface refers to turning tool
The surface the cutting edge is turning.