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The Influence Factors Of The Surface Roughness Of Parts CNC Machining
Dec 28, 2017

The influence factors of the surface roughness of parts CNC machining

CNC machining surface geometry, including surface roughness, surface wave, surface texture processing several aspects. Surface roughness is the basic unit of the geometry of a machined surface. When machining the surface of a workpiece with a metal cutting tool, the surface roughness is mainly affected by three factors of geometric factors, physical factors and CNC machining technological factors.

 

(1) geometric factors

From a geometric point of view, the shape and geometry of the tool, in particular the tip radius, the main declination, the declination and the amount of cutting feed, etc. have a greater impact on the surface roughness.

 

(2) physical factors 

Considered from the physical essence of the cutting process, the cutting edge fillet of the tool and the extrusion and friction behind make plastic deformation of the metal material, which seriously deteriorates the surface roughness. CNC lathes in the processing of plastic materials and the formation of ribbon-shaped chip, the rake face easy to form a high hardness of the BUE. It can be used instead of rake face and cutting edge cutting, the geometry of the knife angle, back to eat the amount of knife changes. The edge of the built-up edge is very irregular in shape, so that the surface of the workpiece appears shades of varying depth and width. Some built-up edge embedded in the workpiece surface, but also increased the surface roughness.

 

(3) process factors 

From the technical point of view of its impact on the processing of metal parts surface roughness, mainly with the cutting tool-related factors, factors related to the workpiece material and CNC machining conditions and other relevant factors.

BY NICOLE

Shenzhen Noble smart manufacturing technology Co., Ltd.

More than 10 years of experience in CNC machining.

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