nomenclature of milling cutter, classification of milling cutter, milling machine process, advantage and disadvantage of milling cutter.

1. DR. J.N. MEHTA GOVT. POLY. AMRELI
MECHANICAL DEPARTMENT
MILLING CUTTER
PREPARED BY:DHIREN P PATEL
5TH SEM MECH.ENGG.
(096110319530)

2. MILLING CUTTER
A milling cutter is a special type of cutting tool which has multiple cutting edges.
There are many advantages of milling cutters compared to single point cutting tool.
1) High machining
2) Completes required machining operation in required time.

3. NOMENCLATURE OF MILLING CUTTER

4. MILLING CUTTER MATERIALS
Cutter Characteristics:- Harder than metal being
machined
- Strong enough to
withstand cutting pressures
- Tough to resist shock
resulting from contact
- Resist heat and abrasion
of cutting
- Available in various sizes
and shapes
High-Speed Steel:- Iron with additives
- Carbon: hardening agent
- Tungsten and Molybdenum: enable steel to
retain hardness up to red heat
- Chromium: increases toughness and wear
resistance
- Vanadium: increases tensile strength
- Used for most solid milling cutters
Cemented-Carbide :- Higher rates of production (3-10 times faster)
- Must select proper type of carbide
- Straight tungsten carbide: cast iron, plastics
- Tantalum carbide: low/medium-carbon steel
- Tungsten-titanium carbide:
high-carbon steel

5. MILLING CUTTER ARE OF DIFFERENT TYPES,THEY ARE CLASSIFIED BASED ON
VARIOUS FACTORS
1) Based on constructional features of the tooth of milling cutter
- Solid teeth milling cutter
- Inserted teeth milling cutter
- Tipped teeth milling cutter
2) According to the relief characteristics
- Profile relieved milling cutter
- Form relieved milling cutter
3) Based on methods used for mounting
- Arbour type
- Facing type
- Shank type
4) According to the direction of rotation of cutter
- Right hand rotational milling cutter
- Left hand rotational milling cutter
5) According to the direction of helix
- Parallel or straight teeth milling cutter
- Right hand helical milling cutter
- Left hand helical milling cutter
- Alternate helical milling cutter
6) According to purpose or use of cutter
- Standard milling cutter
- Special milling cutter

6. THERE ARE MANY TYPES OF STANDARD MILLING CUTTERS SOME OF THEM
ARE:1) Plain milling cutter
- Light duty plain milling cutter
- Heavy duty plain milling cutter
- Helical plain milling cutter
2) Side milling cutter
- Plain side milling cutter
- Staggered teeth side milling cutter
- Half side milling cutter
- Interlocking side milling cutter
3) Metal slitting saw
- Plain metal slitting saw
- Staggered teeth metal slitting saw
4) Angle milling cutter
- Single angle milling cutter
- Double angle milling cutter
5) End mill
- Taper shank end mill
- Straight shank end mill
- Shell end mill
6) T-slot milling cutter
9) Formed cutter
7) Woodruff key slot milling cutter
- Convex milling cutter
8) Fly cutter
- Concave milling cutter

7. PLAIN MILLING CUTTER
- Once widely used
- Cylinder of high-speed steel with teeth
cut on periphery
- Used to produce flat surface
- Several types
- Light-duty
- Light-duty helical
- Heavy-duty
- High-helix
SIDE MILLING CUTTER
- Comparatively narrow cylindrical milling
cutters with teeth on each side and on periphery
- Used for cutting slots and
for face and straddle milling
operations
- Free cutting action at high
speeds and feeds
- Suited for milling deep,
narrow slots

8. FACE MILLING CUTTER
• Generally over 6 in. in diameter
- Have inserted teeth made of high-speed steel
head in place by wedging device
• Most cutting action occurs
at beveled corners and
periphery of cutter
• Makes roughing and
finishing cuts in one pass
END MILLING CUTTER
• Face milling cutters under 6 inch
• Solid, multiple-tooth
cutters with teeth on face and periphery
• Held on stub arbor
- May be threaded or use
key in shank to drive cutter

9. ANGULAR CUTTERS
-Teeth neither parallel nor perpendicular to cutting axis
- Used for milling angular surfaces
- Grooves, serrations, chamfers and reamer teeth
- Divided into two groups
- Single-angle milling cutters
- Double-angle milling cutters
- Single-angle
- Teeth on angular surface
- May or may not have teeth on flat
- 45º or 60º
- Double-angle
- Two intersecting angular surfaces
with cutting teeth on both
- Equal angles on both side of line
at right angle to axis

10. FORMED CUTTERS
- Incorporate exact shape of part to be produced
- Useful for production of small parts
- Each tooth identical in shape
- Sharpened by grinding tooth face (may have positive, zero or negative rake)
- Important to maintain original rake
- Difficult to sharpen
TYPES OF FORMED CUTTERS
Concave
Convex
Gear Tooth

11. SCHEMATIC VIEWS OF CONVENTIONAL UP AND DOWN MILLING
The basic function of milling machines is to produce flat surfaces in any
orientation as well as surfaces of revolution, helical surfaces and contoured
surfaces of various configurations. Such functions are accomplished by slowly
feeding the work piece into the equispaced multiedge circular cutting tool
rotating at moderately high speed as indicated in Fig. Up milling needs
stronger holding of the job and down milling needs backlash free screw-nut
systems for feeding.
Cutting motion
Cutting motion

12. ADVANTAGES OF MILLING CUTTER
1)The inserts rotate as they cut.
2) Faster cutting speeds allow faster feed rates.
3) Rotating inserts last longer
4) Interrupted cuts are no problem
5) Heat in the chip increases with efficiency
6) "Roll-Shearing" Eliminates breakout in cast iron parts.
7) There's less wear and tear on your machinery
DISADVANTAGES OF MILLING CUTTER
There are also disadvantages by employing a milling
cutter.
1) High cost
2) High cutting temperatures are generated
3) High maintenance cost

13. Thank you