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Thread: dividing plates, dividing head
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2nd August 2012, 08:55 AM #16GOLD MEMBER
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thanks guys.....but some of these answers are above me at the moment
maybe I need one so that I can have a play.....or get some plates for the rotary table and have a play with that till I realise its limitations decisions decisions
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2nd August 2012 08:55 AM # ADSGoogle Adsense Advertisement
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2nd August 2012, 07:51 PM #17I break stuff...
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2nd August 2012, 10:06 PM #18GOLD MEMBER
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I believe thats because 127 is a prime number. So for a rotary table or semi universal head you would need a 127 hole plate*. Which you could make on your rotary table (though I'm thinking it would have to be pretty big diameter), then when you divide the job any errors in the plate will be reducted by what ever the ratio your worm gear is.
Stuart
*I checked this with 90:1 and 40:1 ratio and my maths says its correct...... for what ever that is worth heheLast edited by Stustoys; 2nd August 2012 at 10:07 PM. Reason: *
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2nd August 2012, 10:12 PM #19
What exactly do you think you will use one for-just your splines or are there other things in the pipeline? If your thinking of gear cutting then the RT and plates will do you for most of the work. Michael G and i are passing ideas back and forth on an indexing plate capable of 127t gears for members to use. It may not yet happen but it then it might.
If it is just the splines then the indexing plates and a tailstock would be a much cheaper option....then you can spend the rest of the coin on other tools1915 17"x50" LeBlond heavy duty Lathe, 24" Queen city shaper, 1970's G Vernier FV.3.TO Universal Mill, 1958 Blohm HFS 6 surface grinder, 1942 Rivett 715 Lathe, 14"x40" Antrac Lathe, Startrite H225 Bandsaw, 1949 Hercus Camelback Drill press, 1947 Holbrook C10 Lathe.
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3rd August 2012, 09:42 AM #20GOLD MEMBER
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3rd August 2012, 11:41 AM #21Philomath in training
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The other option is that if you just want a spline with a set number of grooves making up a clamp block that will allow you to clamp in say 8 orientations?
(Imagine an 8 sided block with a hole up the middle to fit your material)
Michael
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3rd August 2012, 12:38 PM #22GOLD MEMBER
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that means measuring to make the block Micheal...no good for me....if you consider last nights stuff up....(too embarrassed to tell what it was...but lets say I didnt measure right)
for the small cost I will get some plates for the rotary table...it is at this stage only going to be a once off
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4th August 2012, 06:17 PM #23Senior Member
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