im going to drill .070 dia holes on a line and about 3/8 deep on stainless steel . what speed ,dilling cycle , Q value and feed should i use
im going to drill .070 dia holes on a line and about 3/8 deep on stainless steel . what speed ,dilling cycle , Q value and feed should i use
Try osg drills
One may do lots of holes
Regular drills never worked good for me.
Ideally, you'd use a solid carbide drill with through tool coolant if you can find something that small. Other than that you will be in that trial and err area. Basic shop math tells one that ((3.82x75)/.07)/2 should be your rpm theoretically using a has drill. With carbide, that should be anywhere from 2-10 times that value. Chip load for that should be in the .0005" range. Peck value should be small. Start in the .015" range. Check out Mitsubishi carbide drills. You'll find better advise drilling that size in the Swiss machine forum.
Luck.
yep, I agree with tea hole. Mitsubishi with through coolant. You need a 5µm or even 1µm coolant filters. Hence, you need high pressure coolant option also. Maximum rpm's. Feedrate and other details you will find out in practice.