The Shop > Tools
Shaper motor suggestions?
RussellT:
Does it still have the original stepped pulley on the side of the shaper? That gives some scope for adjustment of speed and torque.
You'd need the smallest pulley you can get for the motor (normally limited by the belt). You could get more reduction if you changed it to a polyvee belt drive as you could get a smaller pulley on the motor (polyvees go in smaller radii).
Is there room on the side of the shaper to fit a larger pulley there?
How about some phots of the actual machine?
Russell
chipenter:
I run a South Bend lathe with a 24 volt dc motor geared down 9 to 1 with a speed controler , below 10 rpm there is not a lot of power I screw cut at 50 rpm without using back gear for small to medium threads .
Lew_Merrick_PE:
--- Quote from: PerryRT on June 25, 2015, 06:04:22 PM ---I am planning direct drive, though. 1 HP you say? That's a good start, I suppose. Again, I suspect that the key is to get the right torque at the right RPM.... does it sound to you like that should be around 3.5 to 4 lb-in at roughly 600 RPM is what I should be shooting for?
--- End quote ---
Stop and think about this. The original equipment had a 1/3 HP motor running through a 3:1 reducer. The base equation is: Torque (in lb-ft) = HP X RPM/5252. [I multiplied the result by 12 because I mostly work in lb-in for torque.] It is torque that drives the action. So, 1/3 HP X 3 = 1 HP.
Now, were you to place (say) a 5 HP motor on your system, you would run up your electricity bill a "tad" (call it 20% as a SWAG) and still only use the power required to supply the needed torque. Though, personally (and not being familiar with the internals of your shaper) I would limit a direct drive motor to less than 2 HP. It is all a cost/benefit analysis.
RussellT:
There seem to be some other variables other than the basic 3:1 reduction to the countershaft.
The stepped pulleys probably provide 2:1 1:1 and 1:2 and you need to think about when you would have need those ratios. I suspect (and I've never operated a shaper so it may be rubbish) that it will depend on the job you are doing. I think there is a further effective reduction depending on the length of the stroke - so a short stroke job will need less torque and can run faster than a long stroke job.
I think it'll probably work with direct drive - but if you can I'd still try and build in as much mechanical advantage as I could.
Russell
PerryRT:
--- Quote from: awemawson on June 26, 2015, 02:31:24 AM ---
Does that work light REALLY go back and forth with the ram as it looks in the illustration? If so I can't imagine it lasting long.
--- End quote ---
No, it's fixed on a bracket on the left side of the ram (behind the ram in the picture). Still works, too!
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