TECH 046 DR. SAMUEL C. OBI

INDS 046: PART IV: MILLING MACHINES AND PROCESSES

THE VERTICAL SPINDLE MILLING MACHINE

A) Milling defined

B) Parts, controls and functions:

1. Base and column

2. Knee:

knee clamps

vertical traverse

crank

3. Saddle:

cross traverse handle

4. Table:

table stop dogs

table clamp

table power feed

table reverse handle

5. Ram:

turret and clamps

6. Tool head:

motor

power feed lever

spindle brake

variable speed control

quill

quill feed hand lever

spindle

C) Cutting tools:

1. End mills:

two-flute

four-flute

double-end

single end

helical

ball-end

roughing end mills

2. Dovetail and angular cutters

3. T-slot cutters

4. Shell end mills cutters

5. Woodruff cutters

6. Fly cutters

7. Carbide and indexable end mills

8. Face milling cutters

D) Cutter holding on the vertical milling machine:

1. Solid collet

2. Split collet

3. Quick-change adapter and tool holders

4. Drill chucks

E) Work holding on the vertical mill:

1. Direct mounting

2. Using a mill vise:

using an edge finder

F) Vertical milling machine operations:

1. Cutting speeds:

rpm = cs * 4/d

2. Feed rates:

ipm = f * n * rpm

3. Depth of cut

4. Cutting fluids

5. Climb milling

6. Conventional milling

7. End milling

8. Face milling

9. Drilling

G) Vertical milling machine attachments:

1. High speed

2. Offset boring head

3. Right angle

4. Rotary table

5. Dividing head

6. Digital/optical readout

HORIZONTAL MILLING MACHINE

A) Types of horizontal milling machines:

1. Bed (planer) types

2. Knee and column types

B) Parts, controls and functions:

1. Base and column

2. Knee:

knee clamps

vertical traverse crank

3. Saddle:

cross traverse handle

4. Table:

table stop dogs

table clamp

table power feed

table reverse handle

5. Spindle

6. Overarm:

overarm clamping nuts

arbor support

C) Cutting tools:

1. Plain milling cutters

2. Side milling cutters

3. Slitting saws

4. Angle milling cutters

5. Form (convex and concave) milling cutters

D) Cutter holding on the horizontal mill:

1. Arbors (types a, b & c)

E) Work holding on the horizontal mill:

1. Direct mounting

2. Using a mill vise

F) Horizontal milling machine operations:

1. Cutting speeds (rpm = cs * 4/d)

2. Feed rates (ipm = f * n* rpm)

3. Depth of cut

4. Cutting fluids

5. Climb milling

6. Conventional milling

7. Squaring a vise