Indexing head
Rack milling attachment
Rotary table
Slotting attachment
Longitudinal movement
Cross movement
Combination of longitudinal and cross movements
Combination of longitudinal, cross and vertical movements
Index plate
Index crank
Selector arm
Worm shaft
1/10th of revolution
1/20th of revolution
1/25th of revolution
1/40th of revolution
The gear ratio between worm and worm wheel in a dividing head is 50 :1
Worm shaft of the dividing head has single start worm
20 turns of index crank revolve the spindle through 180 Degree
For rapid indexing, the worm and worm wheel are to be disengaged