I've learned how to turn SFM into RPM and find a Feed speed in inches. However it seems the Speeds and Feeds I'm using are not doing too well in tool longevity/noise/smell. I wonder what people use 30k spindles for when any speed I've come up with are less than 3000rpm. I've been working with AW36 steel and 304 Stainless steel and now some other type of steel. For now I want to talk about drilling and pecking. The machine I've been using at this time is a Haas VF-0 7.5k spindle, 20 tools, auto coolant aim. We seem to have a fair amount of YG drills in Gold-P and HSS. At the time I was using a .25" Gold-P drill which is a gold coating maybe TIN? Not too sure at the moment. Despite looking on their website and googling, I can't find any speeds and feeds for them.
I was drilling a through hole in 304 SS about .312" thick with .25" drill. I was trying out 100SFM which was 1528 RPM and F6.112 which comes out to .004IPR. The program has a centerdrill (still learning about centerdrills and stub drills) that dimples the part and then the drill comes. I changed the drill's Q value to peck a total of 4 times vs 18 times Q0.1125 Think it was about Q0.025" Z-0.45" (0.10" shim when measuring tool offset, we make the program +0.10" the depth we need to go, not sure if that's something that needs to change too or what) With these settings it sounded good and was fast, but after about 20 holes, the corners of the drill were well worn and pushing a balloon on the bottom side of the part. Although, the hole accuracy didn't seem to change.
Now we've got a .5" steel plate that gets about 8, .312" (5/16) though holes. Z-0.75 Q0.1 F9 (Drill depth, Peck amount, Feed) 1500RPM It's just under 130SFM (Don't know how to convert the other way around) This setup seems to run stable, but not as fast as the internet makes me think it could be.
On youtube and reading I see things like you can peck x4 the diameter of your drill, 1/2" depth is 0 peck I'm trying to google other brand S&F charts for these YG drills and I get too big of a range. What is worse, too much RPM or too much Feed? We've got some carbide insert endmills (cutters?) and I've looked up the S&F for those inserts and can't get near it without the machine sounding/vibrating like it's going to fall apart. I was wondering if you're supposed to ignore the noise and go off of load meter and smell? (Been cooking up coolant these last few days)
What am I doing wrong with my Speeds and Feeds? Does that amount of pecking sound realistic? Is it supposed to sound and vibrate like that? Pretty much have to yell at someone 1 ft away for them to understand what you're saying. I've been trying to watch Haas machining videos on youtube.
Thanks,
Awaqa909
I was drilling a through hole in 304 SS about .312" thick with .25" drill. I was trying out 100SFM which was 1528 RPM and F6.112 which comes out to .004IPR. The program has a centerdrill (still learning about centerdrills and stub drills) that dimples the part and then the drill comes. I changed the drill's Q value to peck a total of 4 times vs 18 times Q0.1125 Think it was about Q0.025" Z-0.45" (0.10" shim when measuring tool offset, we make the program +0.10" the depth we need to go, not sure if that's something that needs to change too or what) With these settings it sounded good and was fast, but after about 20 holes, the corners of the drill were well worn and pushing a balloon on the bottom side of the part. Although, the hole accuracy didn't seem to change.
Now we've got a .5" steel plate that gets about 8, .312" (5/16) though holes. Z-0.75 Q0.1 F9 (Drill depth, Peck amount, Feed) 1500RPM It's just under 130SFM (Don't know how to convert the other way around) This setup seems to run stable, but not as fast as the internet makes me think it could be.
On youtube and reading I see things like you can peck x4 the diameter of your drill, 1/2" depth is 0 peck I'm trying to google other brand S&F charts for these YG drills and I get too big of a range. What is worse, too much RPM or too much Feed? We've got some carbide insert endmills (cutters?) and I've looked up the S&F for those inserts and can't get near it without the machine sounding/vibrating like it's going to fall apart. I was wondering if you're supposed to ignore the noise and go off of load meter and smell? (Been cooking up coolant these last few days)
What am I doing wrong with my Speeds and Feeds? Does that amount of pecking sound realistic? Is it supposed to sound and vibrate like that? Pretty much have to yell at someone 1 ft away for them to understand what you're saying. I've been trying to watch Haas machining videos on youtube.
Thanks,
Awaqa909