troyke 12 inch rotary table made in china

Troyke super precision, heavy-duty manual rotary tables range in size from 10" to 30" in diameter. The Manual Series features a rigid manual rotary table design and can be mounted horizontally or vertically. These precision manual rotary tables are designed to accept dividing attachments, encoders, variable speed drives and a variety of tooling and workholding options.

I"d like to add a rotary table to my little shop. I"m thinking that something in the 10" range would be about right and since it"s for a horizontal/vertical mill it should also probably be capable of being mounted in both arrangements.

I"ve been keeping a watch on e-bay as I"d prefer if I could find some older high quality piece but I don"t know much about the brands or what to look for/avoid. One problem I"m having as well is that I don"t want to spend more on a rotary table than I have on a lathe or a mill. That just seems a little too much.

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Actually, it’s pretty easy to tell the scale of this engine by looking at the crank handle on the machine holding it and the stream of water. The engine is pretty small, around eight to ten inches in diameter.

Here’s what I see in that picture of the engine throat being machined. It’s a CNC manufacturing center maybe, but not a lathe. I think that is a rotary 4th stage on a CNC mill or a CNC manufacturing center. It looks small, maybe even like a hobby table top machine. Comparing the size of the shank in comparison with the coolant nipple makes me think that’s a 1/4” shank, 3/8th max. Which means that collet is only ~ 1 inch. Again, hints of a small machine. The handle on the tailstock might be a good source for a dimension. Most clamping handles are standard. Check the link for candidate lengths.

Looks like the rotary table is made by a high end machinery company from Ohio called Troyke (www.troyke.com). I think it might be a DL-10-B series. Typical. Iranians love American equipment. Iran reminds me of pre WWI Germany when they lamented that the English would not let the Germans love them. A lot of Iranians I met in school lamented the same about the USA. Either way, another clue to throw out.

I concur with Andrew generally. This is a vertical CNC mill with a 4th axis rotary table. The cooling hose is adjustable by bending arbitrarily at each of the bumps. They are pretty standard and about 1/2” per bump. Also, the coolant opening is usually a little more than 1/4” (remember that flow goes more or less as pipe size cubed, so the dimensions can’t be very far from that else the coolant flow is zilch or a fire hose). That is consistent with a hand crank cross section of about 1/2” also. The implication is that this is a pretty small machine – and a pretty small rocket nozzle.

That would make the cutter shank probably 3/8” in agreement with Andrew – although it could be 1/2”. It appears to be a side keyseat cutter. The black part at the top of the cutter shank is the collet chuck tightening ring. If the machine has a tool changer, that would be something like a CAT30 or a small NMTB size; in any event it is clearly smaller than the CAT40 toolholders that I run. I’d guess that this is about a 3 horsepower vertical mill with 12 inches of travel. The rocket nozzle is 4 maybe 5 inches in diameter.

Perhaps it’s a thruster for 3rd stage post burn out trimming? Or maybe a small pressure fed ullage engine? Regen cooling is for hot, high Isp engines that burn a long time. All that plumbing requires a large amount of minimal fuel per burst if it were a thruster. Most thrusters are cooled by radiation. I’m more in favor of the vernier theory. That is assuming it’s a flight engine. No new news on what machine it might be. The uniformity in paint makes me think that the rotary table might have come with the machine which if true throws out the Troyke DL-10-B theory. Still chewing on machine ID.

Update from CNC wonks. The CNC wonks have come in with a first pass at the machine ID. Looks like I was wrong about the rotary stage after all. The best opinion yet is that the machine is a Fehlmann Picomax 20. Made in Switzerland. One CNC wonker says that Iran has a manufacturing license with a German company called Deckel. Deckel machines are held in high esteem around the world. Looking at this picture the spindle and spindle guide look pretty close if you accept that the Iranian video is flipped about the vertical axis.

Might it be local per SAE’s find? Sure, I still consider this problem open, but at least we’re starting to get some candidates. I think the clincher might come from the roatary table as it looks like the 4 axis came with the machine by nature of the paint being an exact match.

Following SAE’s Iranian link you’ll find they manufacture 2 mills. Looking for further information about these mills based on model numbers shows them to be remakes of Deckel equipment. I cannot find any good images or drawings of the spindle, but at the paint level, and the milling table, any of those two local machine might be it. Good catch.