Thread
Thread
Thread
Create successful ePaper yourself
Turn your PDF publications into a flip-book with our unique Google optimized e-Paper software.
X<br />
Step by Step <strong>Thread</strong> Turning - Example 2<br />
<strong>Thread</strong>ing<br />
Inserts<br />
5-6ACME-3G<br />
Application:<br />
<strong>Thread</strong>: Internal Right Hand<br />
ACME<br />
Pitch: 6 tpi<br />
Bore dia: 5”<br />
Material: Stainless Steel Austemitic<br />
<strong>Thread</strong>ing<br />
Holders<br />
1<br />
2<br />
Choose the <strong>Thread</strong> Turning Method (see page 121)<br />
To facilitate the removal of chips from the machined area,<br />
we chose a feed direction away from the chuck.<br />
Therefore an internal left hand insert and an internal left<br />
hand toolholder are to be used.<br />
Choose the Insert Size (see page 69)<br />
<strong>Thread</strong>ing<br />
Technical Data<br />
Grooving<br />
Inserts<br />
Y<br />
L<br />
IC<br />
Chosen insert: 4IL6ACME<br />
Insert Size<br />
IC L mm<br />
Pitch<br />
tpi<br />
Ordering Code<br />
RH<br />
Anvil<br />
LH<br />
1/2” 22 6 4IL6ACME... YE4<br />
Toolholder<br />
AVR..-4(LH)<br />
Grooving<br />
Holders<br />
3<br />
Choose the Toolholder (see page 104)<br />
D1<br />
Grooving<br />
Technical Data<br />
F<br />
L1<br />
L<br />
D<br />
2°<br />
A<br />
Chosen toolholder: AVR 40-4LH<br />
Insert Size Ordering Code Dimensions mm<br />
Min Bore<br />
IC RH A L L1 D D1 F mm<br />
1/2” AVR 40-4 36.0 300 60 40 40.0 25.8 47<br />
Boring<br />
Inserts<br />
4<br />
Determine the Helix Angle (see page 122)<br />
0<br />
1<br />
2<br />
3<br />
4<br />
5<br />
6<br />
7<br />
8<br />
9<br />
10<br />
11<br />
12<br />
Pitch [mm]<br />
Special<br />
Toolholders<br />
132<br />
50 100<br />
b = -2°<br />
Pitch diameter [mm]<br />
150 200<br />
D =0°<br />
b<br />
24<br />
18<br />
14<br />
11<br />
9<br />
7<br />
6<br />
5<br />
4.5<br />
4<br />
3.5<br />
3<br />
2.5<br />
2.25<br />
b=-1°<br />
In this case, a right hand thread is being turned with<br />
a left hand toolholder. The reverse helix method is<br />
used. From the lower part of the table, using a pitch<br />
of 6 tpi and a bore diameter of 127mm, we obtain a<br />
helix angle of -0.65°.<br />
Boring<br />
Holders<br />
Boring<br />
Technical Data
Change language