Search results for query: *

The reason we need the height stated on the drawing for thin mating parts is to tell inspection how high to measure above the thread. If they measure too high, they could be rejecting good parts.

One thing you need to remember about composite position, the datums are for orientation only.

There is no difference between a welded part than a machined part. After welding it becomes one part.

I just order the hard copy and this time there was no $18.00 for shipping.

The price for the hard copy is $169+$18 shipping = $187

I used descriptive geometry back in 1955 to determine if the tubing around a rocket motor would run into other tubing. I'm just wondering if there is a need for drafters and designer to take a class on this subject these days.

Does the CAD systems do descriptive geometry as we had to do manually years ago?

Hi guys, Here is my two cents: Just dimension from the edge of the hole to the edge of the outside diameter and state the minimum edge dimension. Now inspection measures the two sizes and the minimum edge distance.

Check page 49 and Fig 1-56 in Y14.5-1994. You always count the spaces. 5X 72°

Ringman, This note should be pointed to a couple of features, otherwise it would apply to all features related to each other needs to be perfectly orientated etc. that is typically not a design requirement. To reverse the subject,we could use a general note that state "PERFECT ORIENTATION (or...

ASME Y14.5M-1994, PARAGRAPH 2.7.3c the note added to the drawing reads for the relationship between feature "PERFECT ORIENTATION (or COAXIALITY or LOCATION OD SYMMETRICAL FEATURES) AT MMC REQUIRED FOR RELATED FEATURES." Without this note there are no automatic geometric controls relatine one...

First of all, we must be able to read a drawing, not interpret a drawing. If the cross hole is larger than the threaded hole, I would state after the thread callout " MAJOR DIA OF THREAD MUST BREAK THRU" This is easy to check by threading in a screw or bolt. If the cross hole is smaller than...

When people talk about 6 sigma such as developed by Motorola, it is my understanding that ± 3 sigma is the same thing as the 6 sigma. Please clear this up for me. Thanks

I'm probably adding mud to the answers given above. Another way of looking at concentricity, it is twice eccentricity. Runout on an axis to a datum axis is controlling the form such as roundness and concentricity.

For CheckerRon It is somewhat redundant, one is an axis and the other is a center plane. I do not know why they did it. Side note: I hear the committee is considering another draft.

In accordance with the new proposed 2008 standard, the flatness with a MMC modifier is controlling the flatness of the center plane similar to straightness of axis.

In military work we called out MIL-STD-595 color using the word "approximate" and to my knowledge, never had a problem. I don't recall if we gave the vendor other imformation as to the application.

I know I'm opening up myself for criticism: If a thread relief is dimensioned, it must be measured. It has been my practice to state on the drawing "MINIMUM THREAD RELIEF" when good workmanship is good enough.

If you are talking about me, I agree with ringman. The two definitions I copied from the 73 standard was two different dimensioning subjects. The one subject is when no FCF is used, EQL SP must have a ± tolerance associated with the dimensioning. The second subject is when there is a FCF, then...

I went to the 1973 standard, and it states for repetitive dimensions where a pattern of holes has EQL SP without a FCF "Any such method of dimensioning should include the appropriate specification of applicable tolerance." If the pattern of EQL SP has a FCF, "Basic dimensions establish the true...