Machining Time for Shapers

Machining Time for Shapers

Machining Time for Shapers - Let L be the length of stroke (m) of shaper (including tool: clearance at each end of stroke).

V_c be the cutting speed in m/min,

V_R be the return speed in m/min.

f be the feed per cycle in m.

Maching time = Distance Travelled (L) / Speed

Therefore time for cutting stroke, to = Lenght of stroke/Cutting speed

t_c = L / V_c

Similarly , time for return Stroke, t_R = L / V_R

Thus total time for one cycle, T = t_c + t_R

Noe shaping widht W = width of the workpiece + Distance the tool moves on either side of the workpiece to ensure that the full width of the workpiece has been machined.

The number of cycles * required to machine the workpiece

= W / f - (iv) where f is the feed (m).

Thus the machining time T_M = No.of cycles * time per cycle

T_M = W / f * T