Tesla Semi truck unveil & test ride set for Oct 26th !
Everything We Know About Tesla's Semi Truck I wonder what the range is ?
Forum Discussion
Tolerance stack up....AKA “Geometric Dimensioning and Tolerancing (GD&T)”...look it up
All parts can be to specifications...but if all the parts are on one end (small or large)...they may not fit together
An example...the hole for a sleeved bushing might be within spec, but on the small dia side...then the outer metal sleeve with a high pressure and high heat is injected with bushing material...
So they are both made to spec....but...can NOT be pressed together...
Stuff like that, which is junior design stuff...
Or...say the angular position of the control arm...from the inside mounting bushings...but...the tolerance stack now has the brake/king-pin won’t fit...nor be a safe assembly...
Stuff like that and another junior design stuff...
That original vendor made it to spec...incoming quality control inspection passed it...so incomeing DB is marked accepted and it is listed to be paid...
That then has junior folks arguing, pushing the vendor to take it back for rework...but..that vendor wants to be paid for that rework...and it becomes a urination cycle...
In a panick...management sends that part...or both parts out to a 3rd party...AKA...Guido’s machine shop...but Guido’s shop was s not on their approved venders list...Tesla now has to bring them up to speed and listed on their AVL...
But wait a minute...receiving was NOT in on that ECO...so they reject that reworked part...tilll management firgures that out and signs off on that second receiving cycle...
Been there...done that...
All parts can be to specifications...but if all the parts are on one end (small or large)...they may not fit together
An example...the hole for a sleeved bushing might be within spec, but on the small dia side...then the outer metal sleeve with a high pressure and high heat is injected with bushing material...
So they are both made to spec....but...can NOT be pressed together...
Stuff like that, which is junior design stuff...
Or...say the angular position of the control arm...from the inside mounting bushings...but...the tolerance stack now has the brake/king-pin won’t fit...nor be a safe assembly...
Stuff like that and another junior design stuff...
That original vendor made it to spec...incoming quality control inspection passed it...so incomeing DB is marked accepted and it is listed to be paid...
That then has junior folks arguing, pushing the vendor to take it back for rework...but..that vendor wants to be paid for that rework...and it becomes a urination cycle...
In a panick...management sends that part...or both parts out to a 3rd party...AKA...Guido’s machine shop...but Guido’s shop was s not on their approved venders list...Tesla now has to bring them up to speed and listed on their AVL...
But wait a minute...receiving was NOT in on that ECO...so they reject that reworked part...tilll management firgures that out and signs off on that second receiving cycle...
Been there...done that...
