South Bend Tools SB1007, Руководство пользователя

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South Bend Tools
For Machines Mfd. Since 12/21 Model SB1007
-49-
O P E R A T I O N
Thread Dial Chart
The thread dial chart (see Figure 68) is located
on the front of the headstock. Find the TPI
(threads per inch) that you want to cut in the left
column, then reference the dial number to the
right of it. The dial numbers indicate when to
engage the half nut for a specific thread pitch.
Figure Figure 68. Thread dial chart on headstock. . Thread dial chart on headstock.
South Bend Lathe
®
NON
NUMBERED
POSITION
ANY
POSITION
8, 16, 24, 32, 40, 48, 56,
64, 72, 80, 96, 112, 128
12, 20, 28, 36, 44, 52,
76
6, 10, 14, 18, 22, 26,
38, 54
5, 7, 9, 11, 13, 19, 27
4 1 /
2,
9 1 /
2
NUMBERED
POSITION
NUMBERED
POSITION
1, 3, 5, 7
POSITION
1,5 OR 3,7
5
4
3
2
1
8
7
6
1 IN
The following examples explain how to use the
thread dial chart.
TPI Divisible By 4
For threading a TPI that is divisible by four, use
any line on the thread dial (see Figure 69).
4
1
/
2,
9
1
/
2
POSITION
1,3 OR 5,7
5
4
3
2
1
8
7
6
ANY
POSITION
NON
NUMBERED
POSITION
12, 20, 28, 36, 44,
52, 76
5
4
3
2
1
8
7
6
6, 10, 14, 18, 22, 26,
38, 54
NUMBERED
POSITION
8,16, 24, 32, 40, 48, 56,
64, 72, 80, 96, 112, 128
TPI
5
4
3
2
1
8
7
6
5, 7, 9, 11, 13, 19, 27
NUMBERED
POSITION
1, 3, 5, 7
5
4
3
2
1
8
7
6
5
4
3
2
1
8
7
6
TPI
TPI
TPI
TPI
Figure Figure 69. Use any position on dial for threading TPI . Use any position on dial for threading TPI
divisible by four. divisible by four.
Odd Numbered TPI
For odd numbered TPI, use any of the numbered
lines on the thread dial (see Figure 71).
4
1
/
2,
9
1
/
2
POSITION
1,3 OR 5,7
5
4
3
2
1
8
7
6
ANY
POSITION
NON
NUMBERED
POSITION
12, 20, 28, 36, 44,
52, 76
5
4
3
2
1
8
7
6
6, 10, 14, 18, 22, 26,
38, 54
NUMBERED
POSITION
8,16, 24, 32, 40, 48, 56,
64, 72, 80, 96, 112, 128
TPI
5
4
3
2
1
8
7
6
5, 7, 9, 11, 13, 19, 27
NUMBERED
POSITION
1, 3, 5, 7
5
4
3
2
1
8
7
6
5
4
3
2
1
8
7
6
TPI
TPI
TPI
TPI
Figure Figure 71. Numbers used for threading odd numbered . Numbers used for threading odd numbered
TPI. TPI.
Even TPI Not Divisible By 4
For threading a TPI that is even but not divisible
by 4, use any of the non-numbered lines on the
thread dial (see Figure 70).
4
1
/
2,
9
1
/
2
POSITION
1,3 OR 5,7
5
4
3
2
1
8
7
6
ANY
POSITION
NON
NUMBERED
POSITION
12, 20, 28, 36, 44,
52, 76
5
4
3
2
1
8
7
6
6, 10, 14, 18, 22, 26,
38, 54
NUMBERED
POSITION
8,16, 24, 32, 40, 48, 56,
64, 72, 80, 96, 112, 128
TPI
5
4
3
2
1
8
7
6
5, 7, 9, 11, 13, 19, 27
NUMBERED
POSITION
1, 3, 5, 7
5
4
3
2
1
8
7
6
5
4
3
2
1
8
7
6
TPI
TPI
TPI
TPI
Figure Figure 70. Non-numbered marks on dial used for . Non-numbered marks on dial used for
threading TPI not divisible by four. threading TPI not divisible by four.
1
⁄
2
Fractional TPI
Use any opposing number pairs—2/4 or 1/3 on
the thread dial for
1
⁄
2
fractional TPI (see Figure
72). For example, to cut a 4
1
⁄
2
thread, select 1 or 3
on the dial.
4
1
/
2,
9
1
/
2
POSITION
1,3 OR 5,7
5
4
3
2
1
8
7
6
ANY
POSITION
NON
NUMBERED
POSITION
12, 20, 28, 36, 44,
52, 76
5
4
3
2
1
8
7
6
6, 10, 14, 18, 22, 26,
38, 54
NUMBERED
POSITION
8,16, 24, 32, 40, 48, 56,
64, 72, 80, 96, 112, 128
TPI
5
4
3
2
1
8
7
6
5, 7, 9, 11, 13, 19, 27
NUMBERED
POSITION
1, 3, 5, 7
5
4
3
2
1
8
7
6
5
4
3
2
1
8
7
6
TPI
TPI
TPI
TPI
Figure Figure 72. Numbers used for threading fractional TPI. . Numbers used for threading fractional TPI.