AllInOne Overheating? Oscillating
Posted: Fri Apr 02, 2021 10:20 pm
I have a Lagunmatic 250 10HP vertical knee-mill with AllInOne controller. It's been a great machine in my garage and I have machined more than 500 parts without issues. However, today there were two curious events.
I had been running a series of programs (five tool changes) to build 100 parts. Each part takes about 50 minutes of machine time. There is one operation that forms a contour on two posts that takes 30 minutes of continuous machining. I have ramped the feed rate to 750mm/min so the x and y axis are constantly moving. This operation finished and I changed the tool to a drill, started the program, ALT-S and WTF. It moved off the part by >50mm and the machine stopped - fault. Nothing crashed. I checked the positioning (x, y, z) and everything seemed OK, just that my program never would take the drill where it ended up.
I started the drill program again, deep-drilled the first hole, and while fast moving to the second hole the whole machine started shaking (before the drill had engaged my part - thank goodness). I pushed feed-stop immediately. Shaking stopped. It was like I had a disconnected or slipping encoder. I'm assuming it was the x-axis since the holes are aligned along the x-axis (no y movement).
I stopped my program. X, Y, Z axis displays were shifting maybe 0.001mm. Jog functions were fine. I checked x and y motors - not hot, very dry (coolant was on and recirculating fine) and sounded normal.
I shut down everything, cut main power, and opened the control box. It was 60F today (pretty cool for my region) so the temperature in the box was reasonable. The only elevated heat was on the AllInOne board. The heat did not seem excessive. All the VFD's were cool.
I have no idea what to look at now. Any suggestions?
I'm going to put a fan on the bottom of my control box so there's fresh air blowing through the AllInOne. What else can I do?
I had been running a series of programs (five tool changes) to build 100 parts. Each part takes about 50 minutes of machine time. There is one operation that forms a contour on two posts that takes 30 minutes of continuous machining. I have ramped the feed rate to 750mm/min so the x and y axis are constantly moving. This operation finished and I changed the tool to a drill, started the program, ALT-S and WTF. It moved off the part by >50mm and the machine stopped - fault. Nothing crashed. I checked the positioning (x, y, z) and everything seemed OK, just that my program never would take the drill where it ended up.
I started the drill program again, deep-drilled the first hole, and while fast moving to the second hole the whole machine started shaking (before the drill had engaged my part - thank goodness). I pushed feed-stop immediately. Shaking stopped. It was like I had a disconnected or slipping encoder. I'm assuming it was the x-axis since the holes are aligned along the x-axis (no y movement).
I stopped my program. X, Y, Z axis displays were shifting maybe 0.001mm. Jog functions were fine. I checked x and y motors - not hot, very dry (coolant was on and recirculating fine) and sounded normal.
I shut down everything, cut main power, and opened the control box. It was 60F today (pretty cool for my region) so the temperature in the box was reasonable. The only elevated heat was on the AllInOne board. The heat did not seem excessive. All the VFD's were cool.
I have no idea what to look at now. Any suggestions?
I'm going to put a fan on the bottom of my control box so there's fresh air blowing through the AllInOne. What else can I do?