Spent today milling a new motor mount for the ABB motor we are planning on putting on the Opti.
Here's the raw material, a 120x20 mm aluminium bar. The 6-flute 6 mm endmill we used is visible in the left upper corner.
Continue reading Motor mount for new Opti motor
Month: November 2005
Swedish IOM Ranking 8
The four man strong IOM-Team Finland who competed at the nordics in Denmark and in Saltsjöbaden a couple of weeks ago took the trip over the gulf to sail at the last Swedish ranking event of the year.
Continue reading Swedish IOM Ranking 8
Testing VFD and AC induction motor
The stock 600 W DC motor on the CNC-converted Opti BF 20 burned out and had to be replaced.
Jari got a 750 W ABB AC induction motor to replace it and found this used VFD for driving it. Here we are testing the VFD for the first time and it seems to work OK. Acceleration and braking speed is great compared to the old DC-drive.
There's a normally-open start switch (black), a normally closed stop switch (red), an SPDT direction switch (blue), and a linear 10k pot (black) for adjusting the speed. Next step is to build a proper front panel for the switches. The VFD also has a 0-5 V load output which would be nice to monitor while machining.
I've started a new category, CNC, for everything related to CNC control and machines. Hopefully I'll have more to post about these things in the future...