|Forum topic by GrizzlyBagWorks||posted 09-19-2016 06:45 PM||1332 views||0 times favorited||4 replies|
09-19-2016 06:45 PM
Hi Guys, I’m hoping to get some feedback/ideas from some other members here that are more clever than myself. I’ve posted on Inca Yahoo forum but didn’t really get many responses.
I’m in the process of dialing in an Inca 560 Jointer/Planer Combo Machine. If you’re not familiar with these machines they were built in Switzerland, have aluminum tables, 2HP motors, 10-1/4” jointing and planing capacity. They’re excellent machines but have a few ‘quarks’.
One of these ‘quarks’ is a plastic gear for the planer feed system that reduces the 1725RPM of the motor down dramatically to allow for a 11.5ft/min and 16ft/min planer feed speed. The problem is this gear has to be lubed to keep it cool, light cuts have to be made and you can’t run the machine for extended periods or it will literally melt. Replacements are still available but they aren’t getting cheaper.
Sooo…I decided to try a different approach. A separate motor to drive the feed mechanism and eliminate the gear all together. I used a brushless DC sewing machine motor and while it works the feeding is still too fast. I need to reduce it by at least 50%, preferable even more—like 33% of current speed.
My thoughts were to add an additional gear shaft.
I would need:
With that combination I can get the following speeds from the machine:
~10ft/m (200rpm), (Stock Low=11.5ft/min)
The extra gearing will give me extra torque as well so I shouldn’t have a problem with bogging down. A 10t sprocket is pretty small though. I’d prefer a 15t but then I’d need a 45t sprocket on the other end. I’m having trouble finding a 15/45t pair that have the same shaft diameter.
I’m pretty sure I can get the system to work with that setup but at that point I’m in for this conversion for a little over $200. Not sure if it’s worth it.
I was thinking about just getting a slow speed motor that would run at 75RPM but I can’t seem to find one at a reasonable price that would work.
Does anyone have any other ideas or a source for a slow speed gear motor (75rpm)? If the sewing machine motor doesn’t work out it’s no big deal since I can use it on an industrial sewing machine I have.