Reamers

Question 1

Jobbers reamer

Answer 1

Also called a machine reamer taper shank. Designed for machine operation

Question 2

Chucking reamer

Answer 2

Both straight and tapered shanks, similar to jobbers but with shorter flutes. Straight or spiral flutes

Question 3

Rose chucking reamer

Answer 3

Cuts at the end, flutes provide chip clearance and act as a guide. Best used when considerable metal needs to be removed and finish isn’t critical.

Question 4

Shell reamer

Answer 4

Mounted on a special arbor

Question 5

Expansion chucking reamer

Answer 5

Straight flutes with a straight or tapered shank. Slots cut into body for expanding when adjusting screw is tightened

Question 6

Regular Expansion reamer disadvantages

Answer 6

Slots reduce tool rigidness
Diminished accuracy and finish
Reduced cutting edge clearance.

Question 7

Solid expansion reamer advantages

Answer 7

More rigidness and accuracy
Uniform expansion
Clearance Automatically provided

Question 8

Machine reamer rules

Answer 8

Check reamer diameter
Use sharp reamer
Less speed than drill of similar size 
Allow enough material to be reamed
Ample cutting fluid
Remove from hole before stopping

Question 9

Types of reamers

Answer 9

1. Jobbers reamer
2. Rose chucking reamer
3. Shell reamer
4. Straight flute chucking reamer
5. Spiral flute chucking reamer
6. Expansion reamer
7. Solid expansion reamer