A slab-milling operation is carried out on a 200 mm long, 80-mm-wide annealed mild-steel workpiec...
A slab-milling operation is carried out on a 200 mm long,
80-mm-wide annealed mild-steel workpiece having a feedrate of 0.1
mm/tooth and a depth of cut of 4.0 mm. The cutter of 50 mm diameter
has 18 straight teeth and rotates at 135 rpm. The given specific
energy for this material is 3.5 W s/mm3 and the slab mill is wider
than the workpiece to be machined. Calculate:
‧ the material-removal rate;
‧ the power and torque required for this operation;
‧ the cutting time.
(10 Marks)
(243 mm/min, 77760 mm3/min, 4.5 kW, 52.8 s)
b) List six of the geometry features needed when specifying a
tool tip insert used for turning.
(8 Marks)
Homework Answers
ANSWER
PART B
- shape
- clearance
- tolerance
- type
- thickness
- nose radius
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