Conical Cutting Clearance

12.4.1
Conical cutting clearance
Fig. 1
Conical cutting clearance
FS cutting force uS cutting clearance

Regrinding the conical cutting die leads to an increase in the cutting gap.

Eqn. 1
\require{color}\definecolor{myred}{RGB}{255,0,0} s_{\color{myred}0}<4
Eqn. 2
\require{color}\definecolor{myred}{RGB}{255,0,0} u_{\color{myred}S}=\frac{1}{240}\cdot s_{\color{myred}0}\cdot\sqrt{\frac{0,8\cdot R_{\color{myred}m}}{10}}
Cutting ClearanceuS=0.021mm 
Sheet thicknesss0 = 1mm
Tensile strengthRm = 310MPa
Calc 1
Conical cutting clearance, s0 < 4mm
Eqn. 3
\require{color}\definecolor{myred}{RGB}{255,0,0} s_{\color{myred}0}>4
Eqn. 4
\require{color}\definecolor{myred}{RGB}{255,0,0} u_{\color{myred}S}=\frac{1}{320}\cdot s_{\color{myred}0}\cdot\sqrt{\frac{0,8\cdot R_{\color{myred}m}}{10}}
Cutting ClearanceuS=0.062mm 
Sheet thicknesss0 = 4mm
Tensile strengthRm = 310MPa
Calc 2
Conical cutting clearance, s0 > 4 mm
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