homemade rotary table pricelist

One thing that is sorta misleading about the CNC tables unless you"re seen one first hand is just how big they are. I"ve got a Tsudakoma THNC-301, which is a 320mm (12"+) table thats rotary powered and manually tiltable from horizontal to a bit past vertical. It weighs somewhere between 400 and 450 lbs, and I guess the new cost now is somewhere north of $16,000. They have positioning accuracy within a few arc seconds, and are capable of holding accuracies like this with a part that weighs a couple hundred pounds and cutting forces that can generate several hundred ft-lbs of torque.

Pricewise, assuming my 16K current estimate is accurate, that would work out to a bit less than $40/lb, because it definitely weighs over 400#. For comparison, a 10" Kitagawa power chuck for a lathe retails now for about $4000, and although I"ve never weighed one, I guess they weigh less than a hundred lbs from picking one up a "few" times. So that puts the chuck at over $40/lb. If you ever have cause to take one of these chucks apart, they are surprisingly simple. They"re accurate and repeatable, and everything is hardened and ground, but they"re still simple, especially when compared to a rotary table. A good sized collet chuck from Royal to fit an A-8 spindle nose on a lathe weighs barely over 40 lbs and costs close to $2500. Once again, its all hardened and ground, but this is the price of a pullback type chuck which is just one single piece of steel with no moving parts whatsoever, yet it sells for over $60/lb. When you compare the rotary tables and their size and complexity to other machine tool parts of similar complexity and quality, the price begins to look not so far out of line, even though its still not cheap by a long shot.

The 5-1/2� rotary table sold by them is 1-7/8� tall but isn�t geared. The 6-1/4� Marvin table is 2-5/8� tall and geared, but looks like it�s not enclosed. Both now seem to sell for prices more like collectibles than tools.

The mill rotary table is one of the main accessories of milling machine. As a precision work positioning device, it is widely used for indexing drilling, milling, circumferential cutting, boring, etc. The rotary turn table for milling machine is made from casting with high quality, can work with a set of dividing plate.

Both vertical and horizontal with two functions. Circle cutting, indexing drilling, milling and more complicated work are possible when the vertical position of the table is used together with the tail part.