Re: Which chuck to fit 6" rotary table??
Yes it does all depend on what you want to do with it.
Quote:
Originally Posted by
wiatroda
The fact is my rotary table have 4 t-slots so it looks like 4 jaw chuck with 4 front mounting holes as well will be perfect couple
True, but it's not really hard to make a backplate is it...
I have a 200mm 4-jaw self centring chuck on my lathe, TOS brand. It's very accurate, but that's probably not an issue on a rotary table.
Re: Which chuck to fit 6" rotary table??
Quote:
Originally Posted by
m_c
You need to think about what you're planning on doing with the rotary table.
The first job i need to do is to cut 12 tooth 3m htd pulley from steel bar so I'm thinking about holding a stock in a chuck. Another issue is to produce a cutter to cut 3m hdt profile. I searched internet but it looks like the only option is to make cutter myself
Re: Which chuck to fit 6" rotary table??
Quote:
Originally Posted by
wiatroda
Another issue is to produce a cutter to cut 3m hdt profile. I searched internet but it looks like the only option is to make cutter myself
That's what I did for XL pulleys ... but then that's only a trapezium.
Small ball nose cutter and several passes to get the right profile? Would take ages but if it's a one off why not?
P.S. I've got some 3m HTD pulleys if you're interested... I'll go and check what sizes.
Re: Which chuck to fit 6" rotary table??
Quote:
Originally Posted by
Jonathan
True, but it's not really hard to make a backplate is it...
I have a bit of 6mm steel plate in stock. Do you think is it thick enough ??
Re: Which chuck to fit 6" rotary table??
Quote:
Originally Posted by
wiatroda
I have a bit of 6mm steel plate in stock. Do you think is it thick enough ??
As long as you don't need to tap it more than M8 I should think so. If there's a fair few bolts then it can't bend much. If it was on a lathe you would want more.
1 Attachment(s)
Re: Which chuck to fit 6" rotary table??
Quote:
Originally Posted by
Jonathan
That's what I did for XL pulleys ... but then that's only a trapezium.
Small ball nose cutter and several passes to get the right profile? Would take ages but if it's a one off why not?
The profile for 3m looks like this
Attachment 4331
What about to drill 12 holes 1.8 mm dia then turn it to proper outside size???? Eventually tweak corners a bit
Jonathan I have those pulleys, but I need something like shaft ending with a pulley on the end. The stock one are not any good, I tried:sad:
Re: Which chuck to fit 6" rotary table??
That looks like the profile for the belt, not the pulley. There's generally a small difference.
I've seen pictures of it done by drilling, so I suppose it's worth a try. I can't think of any reason for the holes not to be accurate. I would use 1.9mm as you'll be a bit stuck if the cut-outs are too small and it does not fit.
You might be able to 'tweak' the corners well enough with a chamfer. Maybe put it in a lathe and spin whilst holding a piece of wet and dry to it.
1 Attachment(s)
Re: Which chuck to fit 6" rotary table??
Drill 12 holes 1.8mm dia on a 9.96 PCD.
Then turn the OD back down to 11mm and give it a stiff wire brush up.
Attachment 4332
Re: Which chuck to fit 6" rotary table??
I think I'll go for self center chuck and eventually in a future for independent jaws.
Thanks Jon for calculations to do pulley this way will save me hassle with producing a cutter. What's the program by the way????
Re: Which chuck to fit 6" rotary table??
Pulley generated in Gearotic,
www.gearotic.com
Then saved as 2D DXF, brought into CAD and the two circles added and dimensioned.