When I was still employed as a machinist, retired now thank goodness, the boss bought one of these machines and reckoned it would help the drill sharpening process no end.
What was happening was the welders would try and do their own thing at attempting to grind a drill bit, needless to say their attempts were pathetically laughable to say the least.

Upon arrival of the machine, he then instructed these would be drill sharpeners, the technique that he was shown on how to do the job.
All this did was chew up costly drill bits, even faster than they could ruin them before the acquisition of this said destructive item.
It soon became apparent that it was far easier, quicker and cheaper, to get me to stop doing whatever I was doing, then go and do the grinding of the drill bits for these other workers.

Moral of this sad tale, go 'chuck that bit of junk' in the bin and learn to do it yourself.