2001年7月17日 · First, the tolerance zone is a cylinder located at the true position of each hole, so the diameter symbol should be added both at PLTZF and FRTZF. Second, the tolerance value …

2009年7月2日 · [TRUE POSITION|.006|E|F] (with basic dimensioning to datum points on datums E & F) When calculating the true position without a diametric symbol is it necessary to double …

2006年11月19日 · Positional to 1 hole relative to a surace reflects perpendicularity or any other angularity symbol which is the orientation. Why place positional when the appropriate symbol …

2005年11月11日 · In short, the mis-use of "True Position" really irks me. In the '09 Y14.5 standard; "1.3.64 True Position true position: the theoretically exact location of a feature of …

2016年7月14日 · In the end, it is pretty much semantics. The standard says that "true position" is the perfect location. The symbol then provides a tolerance around this perfect location. When …

2009年11月4日 · Below the standard True Position dimension is the word "CODED" followed by a True Position symbol with two quadrants blacked out. I have three different versions of this …

2008年6月4日 · Here is a sketch (If I've managed to load it correctly) where there are 2 faces toleranced as true position. One is the end face of a valve feature, where there is a threaded …

2010年4月9日 · But the true position call out of .005 will not since .004 is already well above this tolerance. i just want to verify, is the .005 call out based on where the holes are located in …

2006年11月2日 · The locating dimensions must be basic. You can calculate what the linear tolerances would be if you were not using the true position callout....remember the square …

2006年11月13日 · It requires adding a symbol to the left hand view and requires adding a top view to show that this isn't a target point. 2009 - Figure 4-45 should have applied the datum …