13.0Indexer positions

How to use the chart

The indexer is shown as viewed from the tailstock end of the Lathe. Points A, B, C and D are the holes in the head casting. The holes in the spindle collar may be considered as numbered 1 through 12.

Example: You wish to rout 9 flutes on your spindle blank. Locate the “9” in the “No. of Flutes” column; each flute angle will be 40°. The index pin should first be inserted into hole combination “A-1”. Make your first flute at this position. Back off the index pin and rotate the spindle until the index pin can be inserted into hole combination “A-5”; this will be followed by “A-9”. Succeeding flutes will be made with the index pin in the B position: “B-2”, “B-6” and so on.

 

 

 

 

 

 

 

 

 

Figure 36

 

 

 

 

 

 

 

 

 

 

 

 

No. of Flutes

Angle

Letter

#

Letter

#

Letter

#

Letter

#

360° divided by...

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

1

360.00

A

 

1

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

2

180.00

A

 

1,7

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

3

120.00

A

 

1,5,9

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

4

90.00

A

 

1,4,7,10

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

5

72.00

-----------------------

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

6

60.00

A

1,3,5,7,9,11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

8 *

45.00

A

 

1,4,7,10

 

 

 

 

 

 

D

2,5,8,11

 

 

 

 

 

 

 

 

 

 

 

 

 

9

40.00

A

 

1,5,9

B

 

2,6,10

C

 

4,8,12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

10

36.00

-----------------------

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

12

30.00

A

 

1 to 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

15

24.00

-----------------------

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

16

22.50

-----------------------

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

20.00

A

1,3,5,7,9,11

B

2,4,6,8,10,12

C

2,4,6,8,10,12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

20

18.00

-----------------------

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

24 *

15.00

A

 

1 to 12

 

 

 

 

 

 

D

1 to 12

 

 

 

 

 

 

 

 

 

 

 

 

 

30

12.00

-----------------------

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

36

10.00

A

 

1 to 12

B

 

1 to 12

C

 

1 to 12

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

other interesting patterns....

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

18

20.00

A

1,3,5,7,9,11

B

1,3,5,7,9,11

C

1,3,5,7,9,11

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

Table 2

NOTE: A dashed line indicates that particular set of angles is not possible with the indexer.

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