SLIDE RULE PREDICTION FOR SURFACE FINISH.

If surface roughness values could be related with an appropriate degree of accuracy to machining data it would be possible to guarantee required surface roughness values by specifying only the data necessary for machining. This can now be done and the method as explained can help to avoid confusion about surface roughness and quality control and can minimize investment in expensive instrumentation. In addition, a homogenous surface texture is obtained and the number of rejected components reduced.