(1) According to the hardware parts processing manufacturer, the roughing process cuts off most of the machining allowance from the workpiece so that the shape and size are close to the requirements of the finished product. Its machining accuracy is low and the surface roughness value is large. It is generally used for final machining of less demanding or non-matching surfaces, and also as a pre-machining for finishing.
(2) Finishing process The process of cutting a small amount of machining allowance from the roughed surface to make the workpiece achieve higher machining accuracy and surface quality is the finishing process. If the surface of the workpiece does not have particularly high requirements, finishing is often used as the final machining.
(3) Finishing process It is to cut a small amount of machining allowance from the surface of the finished workpiece to obtain high machining accuracy and small surface roughness value. Methods such as grinding, honing, superfinishing and polishing belong to the finishing process.
Why should the roughing and finishing of parts be carried out in stages?
According to the analysis of the hardware parts processing company, when determining the technological process of the parts, the roughing and finishing are carried out in stages, and the finishing is carried out after the roughing of each surface is completed. - Both roughing and finishing are performed on one machine tool. In this way, the machine tool can be used reasonably, and the machining error and workpiece deformation caused by rough machining can be corrected, which is conducive to improving the machining accuracy. In addition, rough machining first can detect blank defects such as cracks and pores in advance, and terminate the machining in time.