topari
Aluminum
- Joined
- May 12, 2006
- Location
- Australia, Melbourne
Can someone explain the difference between a universal dividing head and a semi-universal dividing head ?
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Can someone explain the difference between a universal dividing head and a semi-universal dividing head ?
Agreed.The semi tilts,but no gear train.
And as I understand it, to achieve full functionallity a Bridgeport will not have the features required. A machine like a universal milling machine only has the swivelling table to allow the machining of helical shapes.
Mal,
I assume you mean that the ram of the bridgeport can be swivelled? Tilting the turret head would not be comparable to swivelling the table on a universal mill.
However, if you use a stub arbor held vertically, you can tilt the head from vertical, and thus achieve the same results as swiveling the table on a universal horizontal milling machine.
You would at that point have made the swivel in the headstock orientation instead of the table travel.
But the cutter can be situated at the required angle relative to the travel of the helix on the work. It is just angle in another plane than on a universal horizontla setup.
In this case no horizontal attatchment is needed or desired for the helical work.
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