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Help Req buying Rotary table
Stilldrillin:
As John says, anything can be modded to do almost anything....... :thumbup:
My no name has no facility for mounting dividing plates.
36 turns per rotation.
Work out the number of degrees between gear teeth, then wind accordingly per tooth & zero the dial for the next tooth.......
David D
bogstandard:
Darren,
My dividing head gets very rare use, only when I need a wierd number do I use it or the RT with plates.
Most times, I can get away with just using the RT and it's degree scale coupled to the vernier.
But on the other hand, when you do need one, it is nice to know that you won't have to struggle cobbling up a setup.
John
Darren:
Is there an optimum worm drive ratio?
Everyone seems to use different ones..... :scratch:
Darren:
Had a real good look at my RT tonight, it's 90/1 ratio and looks as if it will easily lend itself to fitting dividing plates.
Again more info to absorb from what I can find on the net.....
bogstandard:
Darren,
I don't think it really matters, you just end up with what you have got, and work with it.
But knowing the ratio is important when working with a dividing head, as that ratio is used in your calculations when working out plate, full rotations and hole number counts.
Many people think that it is just a matter of sticking a plate onto a dividing head and moving from hole to hole.
Nothing could be further from the truth. Calculations are required on the intial setup so that each time you move the handle by so many full revolutions, plus so many holes, it puts the blank in the correct position for the next cut.
It is very easy to make a mistake when using one. You can get almost all the way round making say a gear, fluff a count, take your cut, then start all over again from the beginning, with a new blank.
DAMHIK, many times.
BTW, I have a spare set of fittings and fingers you can borrow and copy if you like. You would just have to get your own plates made up.
You can in fact get them ready made, but you wouldn't know if they could be made to fit until after you have bought them.
http://www.chronos.ltd.uk/acatalog/Chronos_Catalogue_Rotary_Tables___Indexers_93.html
Go down the page a bit and you will find this for mid 30 squids
DP1 Dividing Set for HV4 & HV6 Rotary Table, these are the same as mine, and include the plates.
Bogs
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