Splines have parallel sides, tangential to the surface and are "square" in appearance; serrated shafts have angled sides and look similar in appearance to involute gear teeth. Both are designed to transmit rotational force to a mating part but whereas a splined shaft is designed to accommodate unrestricted longditudinal movement, as in, for example, a lathe feedshaft, a serrated shaft is designed to accommodate little, if any, such movement and is concerned mainly, in transmitting power.
Mitten, you are correct. Although the hobb is far from home made. This is being done on a CNC lathe using polygon turning. Polygon turning is a G code function that will allow the main spindle and the live tooling spindle to become timed with each other. It is an option function when purchasing a machine from a dealer. With the polygon function, shapes can also be created without the use of milling cutters.
I think he is generating the splines with a hob probably homemade on the back side. I have generated a worm gear like this before. The cutter or Hob, actually turns the workpiece as it cuts on a manual mill. however this looks like its all timed CNC.
Splines have parallel sides, tangential to the surface and are "square" in appearance; serrated shafts have angled sides and look similar in appearance to involute gear teeth. Both are designed to transmit rotational force to a mating part but whereas a splined shaft is designed to accommodate unrestricted longditudinal movement, as in, for example, a lathe feedshaft, a serrated shaft is designed to accommodate little, if any, such movement and is concerned mainly, in transmitting power.
klixxie 2 weeks ago
Nice video - but it's actually a serrated shaft and not a splined shaft - common mistake.
klixxie 1 month ago
@klixxie~ whats the difference??.... look like SPLINES to me!
marek0086 2 weeks ago
I'd like to see a shot of the cutter itself..
dougspair 2 months ago
Mitten, you are correct. Although the hobb is far from home made. This is being done on a CNC lathe using polygon turning. Polygon turning is a G code function that will allow the main spindle and the live tooling spindle to become timed with each other. It is an option function when purchasing a machine from a dealer. With the polygon function, shapes can also be created without the use of milling cutters.
MachineManGMC 3 months ago
I think he is generating the splines with a hob probably homemade on the back side. I have generated a worm gear like this before. The cutter or Hob, actually turns the workpiece as it cuts on a manual mill. however this looks like its all timed CNC.
TheMittens22 4 months ago
This is rediculous. What the hell are you doing in this video?
spidersinspace 4 months ago
I have no idea what was happening.
winterka100 4 months ago