Table 5 Values of coefficients for the model B

\(D = 50\;{\text{mm}}\)

\(L = 300\;{\text{mm}}\)

\(D_{t} = 6.0\;{\text{mm}}\)

\(V_{rU} = 500\;{\text{m/min}}\)

\(V_{rL} = 50\;{\text{m/min}}\)

\(f_{rU} = 0.9\;{\text{mm/rev}}\)

\(f_{rL} = 0.1\;{\text{mm/rev}}\)

\(d_{rU} = 3.0\;{\text{mm}}\)

\(d_{rL} = 1.0\;{\text{mm}}\)

\(V_{sU} = 500\;{\text{m/min}}\)

\(V_{sL} = 50\;{\text{m/min}}\)

\(f_{sU} = 0.9\;{\text{mm/sev}}\)

\(f_{sL} = 0.1\;{\text{mm/sev}}\)

\(d_{sU} = 3.0\;{\text{mm}}\)

\(d_{sL} = 1.0\;{\text{mm}}\)

\(k_{o} = 0.5 \$ / {\text{min}}\)

\(k_{t} = 2.5 \$ / {\text{edge}}\)

h ₁ = 7 × 10⁻⁴

h ₂ = 0.3

\(t_{c} = 0.75\;{\text{min/piece}}\)

\(t_{e} = 1.5\;{\text{min/edge}}\)

p = 5

q = 1.75

r = 0.75

c _o  = 6 × 10⁻¹¹

\(T_{u} = 45\;{ \hbox{min} }\)

\(T_{L} = 25\;{ \hbox{min} }\)

k _f  = 108

μ = 0.75

v = 0.95

η = 0.85

\(F_{U} = 200 \,{\text{kgf}}\)

P _U  = 5 kw

λ = 2

v = −1

S _c  = 140

k _q  = 132

τ = 0.4

ϕ = 0.2

δ = 0.105

Q _u  = 1000 °C

\(R_{n} = 1.2\;{\text{mm}}\)

k ₃ = 1

k ₄ = 1

k ₅ = 1

T _P  = 25

n = 1

k ₁ = 1

SR _U  = 10

k ₂ = 2.5