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You need a lathe dog. They can be bought or made.
face driver
As stated...Lathe Dog or Face Driver are the most common methods. Sometimes if you're doing a light skim cut, just add a little more tailstock pressure, and then you don't need a driver.
That applies only to the ancient ones, and they happen to be better balanced, dynamically than first appears. Lathes were slower, back in their day. It just wasn't a problem, nor need it be, now.Face driver if possible. Lathe dogs work well, but if runout is super-critical, the unequal mass of a lathe dog can cause strange things, and this gets worse the higher the rpm.
That applies only to the ancient ones, and they happen to be better balanced, dynamically than first appears. Lathes were slower, back in their day. It just wasn't a problem, nor need it be, now.
In any case, it isn't at all hard to shop fab a VERY well balanced one.
Two near-as-dammit identical bars, each with a Vee cutout arranged for equal length of bypass, opposite direction. Equal mass fasteners for clamping. That implementation must be easily 200 years old in use. A small "set" of forged loop and bent-tail were just handier.
You want a Rzeppa joint for TS set-over tapers? Have at it.
You can balance a lathe dog I guess, but they still prevent turning the entire OD in one setup.
Face driver is better in every way. Especially the hydraulic ones that don't care about the precision of the face...
Must be a stock item? Show us a link. Locomotive axles to carburretor metering rods, please.
Otherwise, I'll stick with women for hydraulic "face driving", thanks!
So, the basic principle is the driving dogs are actually hydraulic pistons which all share a common reservoir, and therefore conform to the profile of the face with equal pressure. I think Sandvik Kosta were the first to make such, but they are commonly available from a number of manufacturers now. They can be had in surprisingly small diameters.
So, the basic principle is the driving dogs are actually hydraulic pistons which all share a common reservoir, and therefore conform to the profile of the face with equal pressure. I think Sandvik Kosta were the first to make such, but they are commonly available from a number of manufacturers now. They can be had in surprisingly small diameters.
So, the basic principle is the driving dogs are actually hydraulic pistons which all share a common reservoir, and therefore conform to the profile of the face with equal pressure. I think Sandvik Kosta were the first to make such, but they are commonly available from a number of manufacturers now. They can be had in surprisingly small diameters.
I wonder if the "blades" or Drive pins (per the model) are a consumable item. I would automatically think and assume; YES, but how easy/cheap/accessible are they to replace?
R
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