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OVERLAP RATE
 
     
 

Together with the dressing traverse speed (fad) and the feed rate (ad) of the dressing diamond, the effective width of the grinding wheel (bd) greatly influences the dressing result through the overlap rate resulting from these dressing conditions (Du). This must be checked reproducibly to ensure that the desired machining result is maintained on the workpiece


The overlap rate (Ud) plays a key role in this connection.

The overlap rate determines the surface roughness on the ground workpiece and the wearing ratio of the grinding wheel.


In the typical case shown here, overlap rate Ud = 2 if bd = 1 mm and fad = 0.5 mm.



Calculation of overlap rate Ud

Ud=
bd
fad

Ud = overlap rate
bd = width of diamond wheel in mm
fad = axial feed of diamond cutting point per rotation of grinding wheel



Since the dressing traverse speed fad per rotation of the grinding wheel is not usually known in the workshop, the following formulae may help you calculate overlap rate Ud and dressing traverse speed vfad:


Ud=
bd * n
vfad
Vfad=
bd * n
Ud


Ud = overlap rate
bd = width of diamond wheel in mm
vfad =a xial feed of diamond cutting pointin mm/min.
n = Speed of grinding wheel in rpm.



The approximated value for the max.useful overlap rate Ud, which offers the best possible raw value with a grinding wheel, is:

Ud=
grain size in mesh
15

depending on Messer

Use our formula generator for custom calculation!

 
     


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