Inserts and Tool Holders
A side cutting edge angle:
permits a higher cutting speed
permits a higher feed rate
improves surface finish
reduces chatter
permits a higher feed rate
The insert with the highest cost per cutting edge is:
triangular
square
round
35 degree diamond
35 degree diamond
What are the three primary axes of movement of a knee and column type milling machine?
-longitudinal
-cross
-vertical
When would you tighten the backlash eliminator on a milling machine?
before climb milling
An insert for turning should last approximately:
45 minutes of machining time
3 weeks in the tool holder before it begins to break down
until it runs into a shoulder
15 minutes of machining time
15 minutes of machining time
A negative rake angle improves the life of a carbide insert because:
the metal contacts the face of the insert behind the cutting edge
the chip flows more easily
a negative rake does not form a continuous chip
less feed power is required
the metal contacts the face of the insert behind the cutting edge
The size of an inch insert is determined by the:
length of the shortest side
length of the diagonal
length of the longest side
diameter of the inscribed circle
diameter of the inscribed circle
What makes a universal horizontal milling machine different from a plain horizontal milling machine?
the table can swivel
What moves on a gantry mill to position the x axis?
the gantry moves
What is the purpose of an overarm on a horizontal milling machine?
to support the arbor support
The most important factor in determining how a chip flows is the:
end relief
side cutting edge angle
end cutting edge angle
back rake angle
back rake angle
The size of a metric insert is determined by the:
diameter of the inscribed circle
length of the cutting edge
area of the insert in square millimetres
length of the diagonal
length of the cutting edge
When would we use a horizontal milling machine instead of a vertical milling machine?
it would be used for heavier cuts
What is the purpose of the ram on a ram-type vertical milling machine?
to support the milling head
What grade of carbide would you use when machining very hard grey cast iron?
M10
K01
P10
K20
K01
Surface finish is determined by the:
end cutting edge angle
side cutting edge angle
nose radius
side rake
nose radius
An insert with the designation SNMG 642A is:
square
round
triangular
diamond shaped
square
What kind of milling can the universal horizontal mill do that the plain horizontal mill cannot?
helical milling
If the graduated table hand wheel on a milling machine advances the table 0.200 inches per revolution, what is the TPI of the leadscrew?
5 TPI
What three parts of a knee and column milling machine move to give the machine its three axes of movement?
table, knee, saddle
The strongest shape for a carbide insert is:
triangular
round
square
diamond
round
A square insert with an inscribed circle of 5/8 inches would be designated:
SNMG 644A
SNMA 634A
SNMA 542A
TNMG 542A
SNMA 542A
What moves on a bridge mill to position the x axis?
the table moves
What are the four main types of knee and column milling machines?
plain horizontal, universal horizontal, vertical, ram-type vertical
An insert with the designation TNMG 25 04 08 D has:
a hole, a countersink and a chipbreaker
a hole and a chipbreaker
a hole, but no chipbreaker
a hole and one countersink
a hole and a chipbreaker