Grinding and Turning.doc

Grinding and Turning
Grinding and turning are two types of manufacturing process. They monly used in manufacturing. Grinding is considered to be a finishing process that is usually used for obtaining high-dimensional accuracy and better surface finish. Turning is often to be a rough process or finishing process sometimes, so turning is one of the mon manufacturing processes in manufacture.
There are parisons between grinding and turning as follows:
1. Process System
Grind part: Grinding machines differ in construction as well as capabilities, and the type to be employed is determined mainly by the geometrical shape and nature of the surface to be ground. So grinding machines can be simply classified as the cylindrical grinding machine and the surface grinding machine.
Surface grinding machine usually has a planer-type reciprocating table on which the workpiece is held. The “tools” of grinding machine is abrasive wheel which simulates a milling cutter with an extremely large number of miniature cutting edges. When the machine works, the work table on which the workpiece is held moves reciprocally and the abrasive wheel rotates with the machine spindle.
Cylindrical grinding machine holds the workpiece between centers. During the grinding operation, both workpiece and the grinding wheel rotate and longitudinal linear feed are applied to enable grinding of the whole length.