2012年5月15日 · Critical is a dimension where if it is out of specification it could affect safety of the end product and has a rating of 9 or 10 in your process FMEA (failure mode and effects analysis). Other dimensions that may affect the function and relationship are considered "Major" and must be controlled on a regular cycle basis on the line.

2002年9月10日 · Choose any marking you want to mark a critical dimension. Then, in the general notes, define that symbol. For example, we use a triangle with a solid square in the middle. In the general notes, we say "Where applied, dimensions marked symbol shall be validated for functional use."

2017年3月6日 · Nor what a critical dimension is AFAIK.. Typically if one thinks they need to specify that a dimension is critical they will use a general note (flag note) and some symbol/stamp,etc.... Inventor has the ability to specify that a dimension should be an "inspection dimension" and allows you to put an inspection rate,etc.. (see 3rd tab of edit ...

2017年5月15日 · The inspection level is often pre-defined, so a critical is 100% inspection, Majors have a higher percentage, and so on. But, you shall not apply a classification of characteristic onto a dimension to force inspection levels. There are other ways to force a dimension to be 100% inspected without listing it as a critical.--Scott www.aerornd.com

2006年9月18日 · The symbol will be placed after the numeric value of the dimension or a leader from the symbol leading to the critical item should be used for clarity. The following note will be added to the face of the drawing “ X. SYMBOL ? DENOTES CRITICAL DIMENSION / FEATURE IN ACCORDANCE WITH **** (ref company procedure)”.

1999年5月26日 · Re: Critical Characteristic Symbol - ASME Y14.100 Standard (Engineering Drawing Pract Thank you Jim -for the information & suggestion- Since industry has no standard-I believe I will decide to maintain 1 CTQ symbol for our drawings.

2008年2月29日 · Belanger sees this as a “critical” dimension symbol; we use a diamond shape for “critical” dimensions here. The important aspect of this is to define what your company intends the symbol to mean and put it in your standards; or sometimes a “legend” as part of the drawing format will do the job.

2012年8月20日 · or does the dimension value always have to be adjacent to its dimension line. For example, if the inspection symbol is <4>, and the dimension line is on the right of a R.250 radius, would it be incorrect to have R.250 <4> -------->

2012年6月26日 · The reason for this is that identifying critical dimension is part of manufacturing/quality control process, rather than design process and your prints are to be as procedure-independent as possible, so your inspection plan …

2013年7月17日 · 1. The SW fix is to add an "Inspection Dimension" border around important dimensions. It is a button above the dimension text box, and can be found in 'dimension value property manager' portion of the Help section. The significance of this border may vary company to company, so quality needs to make sure they define a process for the symbol. 2.