Каталог Stellram фрез со сменными пластинами - страница 228

7702VRD & 7712VRD Technical Information

Working Diameter:

Formula to evaluate the correct working diameter

based on axial depth of cut (ap).

r a D = D + 2 x r - (r -a )

p 2 2

D where: D = Working Diameter

w w = Diameter of cutter insert centre to centre D = Insert radius2

r a = Axial Depth of Cut p

7702VRD & 7712VRD Technical Information

where: f = Feed per tooth a = Radial Depth of Cut z e

h = Average chip thickness a = Axial Depth of Cut

m p r = Insert radius

Formula to find programmed feed rate based on radial engagement and

axial depth of cut. f h m

z ( (

r 2 - r - a )2 r 2 - r - a )2 e p x r r

Formula to calculate the average chip thickness hm in relation with radial

engagement and depth of cut.

r2 - r - a )2 r 2- r - a )2

z r r

Simplified formulas to evaluate hm and fz based on radial engagement or depth of cut.

Calculation of the average chip thickness in relation with the D.O.C. (Axial)

p d

Calculation of the average chip thickness in relation with the ae (Radial Engagement) if ae is less than 50% of Dia.

d = Feed per tooth a

e d