MMC condition
MMC condition
(OP)
I have one hole with 6-6.4 mm dia, which has given the 0.4 mm diametric positional tolerance at MMC.
What would the possible dia of hole?
My understanding says from 5.6 - 6.4 mm hole.
5.6 mm would be the virtual case but if real part has that dimension does quality people will accept that dia ?
What would the possible dia of hole?
My understanding says from 5.6 - 6.4 mm hole.
5.6 mm would be the virtual case but if real part has that dimension does quality people will accept that dia ?





RE: MMC condition
MMC for the hole is 6.0 mm.
RE: MMC condition
I believe this is correct. Corrections are welcome.
"Wildfires are dangerous, hard to control, and economically catastrophic."
"Fixed in the next release" should replace "Product First" as the PTC slogan.
Ben Loosli
CAD/CAM System Analyst
Ingersoll-Rand
RE: MMC condition
My question is if production people will make that hole of 5.6 mm than quality people will approve it or not?
RE: MMC condition
What is meant by this is that if the hole is at a position at the extreme edge of its tolerance, the maximum diameter pin that could be expected to fit is 5.6 mm.
RE: MMC condition
The spec for the given hole is satisfied at dia 5.6 mm or not?
RE: MMC condition
Is this the pin which is going to assemble in that hole or the pin which uses to check the dia of hole?
I am kind of novice in this field so might be i'm asking some basic questions?
RE: MMC condition
Since your position may be off by .4 and your hole dia is 6, the max pin that will fit through that hole condition is 6-.4=5.6.
"Wildfires are dangerous, hard to control, and economically catastrophic."
"Fixed in the next release" should replace "Product First" as the PTC slogan.
Ben Loosli
CAD/CAM System Analyst
Ingersoll-Rand
RE: MMC condition
RE: MMC condition
RE: MMC condition
If the hole has to be within a 6-6.4 range &
1. when the hole is out of position by the maximum tolerance and at MMC of 0.4 mm.
2.if pin is a seperate single piece component
Then why the pin has to be 5.6 mm dia?
THe pin is for assemble or to check the dia?
I will really appreciate if you help me in this matter,
RE: MMC condition
RE: MMC condition
The hole is 6 at MMC. Subtract the positional tolerance of 0.4 and you have a pin diameter of 5.6 mm. This pin is not meant to inspect hole size only, but size and position together, and must be part of a fixture (to simulate the required datums).
I hope that helps clear it up some. The others posting on this thread may be able to help explain it more clearly.
RE: MMC condition