Equation changing High and low of Limit distance mate possible?

Nov 06, 2007 4 Replies

I have an assembly with several configurations. In some configurations, the length of a particular part changes. This part is mounted to a moving component in the assembly. The distance this moving assembly section can travel changes with the length of part - this is controlled with a Limit Distance Mate. I have an equation which references the travel allowed by this mate to the length of the part. This does controll the total distance allowed to travel, but does not actually set either the high or low value. These appear to change at random when the part length changes(always keeping the same overall travel length correct-I just end up with seemingly random start and end points). Is there a way to controll start and end values of this distance mate?



Thanks, SeanMc


To my knowledge it is not directly possible.

It may be possible to do in a design table, as limit tolerances can be controlled with DT's.

More info:

Limit distance mate dimensions AND tolerances can be config-specific. There is a button in the property manager to specify configs.

Once you have change values to be config-specific, you will be prompted to add these to a design table when you add or edit the DT.

The limit distance tolerance in a DT is a string that looks like "LIMIT;1.000000;-1.000000". You can use Excel "concatenate", "text", and other string functions to create your limit tolerance string and even link it to the nominal in a way that the top and bottom limits stay the same no matter what happens to the nominal.

Thanks a lot - I'll give it a look - SeanMc

Thanks Tick - Seems to work. Still does funny things on rebuild occasionally, but much better than before. Have my travcel length set in an equation. Have my Tolerance limits set in the design table. This tolerance is concatenated together in excel from this travel length, which is displayed in another cell - seems to work

Thanks again

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