I could use a little help here. I'm using my Tormach 1100 on steel for the first time, and I'm getting some serious chatter issues.
I'm running a brand new, 1/2", four flute Meling end mill in a set screw holder. I'm using trochoids, with a stepover of 0.0625" and a cut depth of 0.08" Feedrate was determined by GWizard (see screenshot).
The workpiece is a slab of 1" steel plate from my local metal supplier.
The initial plunge takes place off of the edge of the workpiece, and then the trochoids create the initial slot.
Given my depth of cut and stepover, it seems like I am babying the mill. But the chatter was so bad that I had to hit the emergency stop.
Also, I've tried this same code with the feed reduced to 8.6 IPM, and it still chatters. I've also had some issues with the TTS holder pulling out of the collet.
Am I asking too much of the mill, or is my code just really bad? I welcome your advice.
Sincerely,
Frederic