I have no experience in CNC
2020 lockdown, I decided to make a cnc router, though I nearly went the route of buying a shapeoko or something of a similar ilk.
Bought all my components from Ali, everything was price driven.
Didn’t really follow any plans.
Build as big of a cutting area as possible.
SFU1605-500mm + nut with end machining 1
SFu1610-1400mm + nut with end machining 1
SFU1610-1500mm + nut with end machining 2
2.2KW Water Cooled Spindle 1
2.2KW Inverter 1
ER20 Collet 1
Nema23 425oz 4
TB660 Stepper motor driver 4
36V 350W Power Supply 2
Mach 3 interface board / USB Connection 1
Cable Chain 25*38-1000mm 4
Proximity Switch 4
Emergency Stop 1
To be fair, my expectations where low, would you really expect anything to be smooth sailing with this configuration? Well the answer is yes, though with a pinch of salt. The biggest issue and weakest link (which won’t be of any surprise) has been the Stepper Drivers – TB6600 (which aren’t using the TB6600 chipset!). My god do these get hot, and in-turn, they shut down which is perfect when your slave Y axis die whilst the other side continue to rip the Gantry apart.
Here a video of my second test run –
I’ll admit, that after all the turning, fettling, tramming etc, I have finally got to a stage where she will cut for 8hrs straight (120mm fans sitting on the TB6600 help), but before I upgrade the drivers to either Geko or leadshine AM882, why cant I get the old girl to run at 400 steps?
Motor is 23HS45-4204S, driver TB6600 set to 2.8A using a 10Amp 36v PSU. Ball screw 1610, 5pitch 10 lead.
When set to 800 pulse/rev, she will happily move at 2500mm/min. However, when trying to run at 400p/m at 1000, the drivers crap out? This to me is weird you would expect at 800p/m (0.45deg) more current is required compared with 400? Could this be more to do with my Mach3 setting instead of the general consensus that the $3 TB6600 is at fault?