Small taps may be in the range of 3-6D, larger (say 3/8 or so and up) may be at 2-4D. As others have said though, this not set in stone. This will change with different makes, type styles etc. 1-1/2D shouldn't be a problem at any size (unless you're tapping a 2" thread - then its a HP issue).
pceller, the "general" consesus for "standard" tolerance would be this...
.X = .03
.XX = .01
.XXX = .005
Finish = 63
Angle = 1 deg
But keep in mind, none of this is set in stone. I agree with Scott (RRBD) though, tolerance the part as according to your needs. Don't try to "cheat" the price...
You download many for free use, or even for a trial period. This one is free: http://www.cadem.com/ncnet/freednc.htm
Or for trial:
http://www.multi-dnc.com/index2b.html#myAnchor
Predator is also slick.....
Google it,.... there's a lot of free trials and freebies out there...
How many tool/offsets do you use in a single program? If you have 64 capable, can you make each program use a different offset? As Bill said though, if you actually change the tooling, the offsetting is negated anyway. Also, in your programming, are you programming from centerline with comp...
Depending on the age of the machine, that could be difficult. What control (and version or model of control) it on it? Depending on this, you may have some other capabilities on it that you may not be aware of. Also, if the parts are a similar, you could do this as macro programming save...
Ahhhm, gundrills. One comes to mind...
Some winters ago, working at a shop in Denver, I was moving a part from one machine to another on a HMC cell center. The tool matrix were all virtually the same with a few exceptions. Well, the program called for a 1/2 em which spun at 14k, the magazine...
Quote:
Don't you realize that it's the pattern-locating tolerances that are so sensitive to the variables you mentioned?
Got news for you, feature tolerances are also affected by many of those variables as well, not just location or positioning.
Quote:
Also, by Y14.5M-1994, dimensions and...
Tunalover,
To get back to your initial question, "... "typical" high-probability positional tolerances for CNC...". As you already answered for yourself, it's "broad", the question and the answer. Can a CNC machine (mills and lathes and such) hold tenths? Yes, and even better under the right...
Hello, first time posting here but have been watching...
Quote:
O1
M00(RESET ALL OFFSETS TO 0?)
#100=1
WHILE[#100LT100]DO1 (note: this resets numbers 1-99, if you have more or less, change this value)
G10G90P#100R0
#100=#100+1
END1
M30
This macro would work except you'll need an "L"...
Hello, first time posting here but have been watching...
Quote:
O1
M00(RESET ALL OFFSETS TO 0?)
#100=1
WHILE[#100LT100]DO1 (note: this resets numbers 1-99, if you have more or less, change this value)
G10G90P#100R0
#100=#100+1
END1
M30
This macro would work except you'll need an "L"...