Answer / mitul

118*

Answer / rohit mathanker

there is four angle use in twist drill
1 cutting angle it is 118 is quite common but very 80 to
140 degree soft material required large value of it wherse
hard material required low value.

2 lip clearance angle its value varies 8 to 14

3 rake angle it is large for hard material because for
removeing the chip and small for hard material

Answer / prithwish

118*

Answer / rohit mathanker

90* angle use for bekelite hard plastic.
118* for cast iron
120 for mild steel

Answer / prithwish

yes

Answer / kiran

is cutting angle and point angle same???????
i think cutting angle is angle made by cutting edge to work
surface.. then how will 118 becomes cutting angle?

Answer / chaitanya pithawa

we cant say from this,because for every material the angle
is different and there is 3 angle of twist drill.
118 is point angle for bronze and cast steel and for
Al,Brass and SS,118 is the min no. of the point angle.

Answer / andy

118

Answer / rrb

60 ○

How does a coal power station produce electricity?

0 Answers  

what is the difference between a distillation column and tower

2 Answers  

One TR = ?kacl/hour One US Gallon = ?liters

3 Answers   Balco,

a 20ph motor runnig a load with direct belts, can we use 10hp motor for the same load with the help of gear where motor rpm 900 and load rpm 250

1 Answers  

what is exactly peripheral velocity in case of two meshing gears?

2 Answers   Intel,

How are the pneumatic system and the hydraulic system similar?

0 Answers  

What i the role of a turning gear attached to a shaft line of a steam turbine

2 Answers  

what is the magnetic (electric) center)

0 Answers  

Maximum combustion temperature in gas turbines is of the order of 1100 to 10°c whereas same is around 00°c in i.c. Engine ? Why ?

0 Answers  

What is mean by compression ratio?

4 Answers  

meaning of 125kva DG

0 Answers  

Explain important rules that must be kept in mind while designing castings?

0 Answers