I have not used the alignment feature, but from a programming
standpoint, I can see at least one reason to set it up that way.
Assume the program does not know which holes are to be aligned.
It may be obvious to you who designed the parts, but are the holes
labeled in a way that the program will know which pairs should align?
Let's say you have two plates with badly misaligned holes. How will the
program know which holes are to align? Even worse, what if there
were three holes in one plate and two in the other?
If you view the value that you input as setting a target area in which
the mating hole is to be found, then you effectively tell the program
which pairs should line up and avoid a potential problem of the
program the picking some wildly different and unintended hole to line up.
In that case, entering a huge value could lead to very odd results.
John
Message -----
Sent: Thursday, July 09, 2009 4:37 AM
Subject: Re: [solidworks] Re: Misaligned Holes In Assembly
Yes I understand that this is the way it seems to work with SW. However, in all cases, by using this feature, SW wants the user to input a value greater than any out of alignment condition. In my mind, and I admit I have to be careful with that, that I anticipated being able to input a value which was used as a value of "Not To Exceed", which for me would have made a lot more sense. As an example, if I had two holes in different plates which when mated were off .125 inch (vertically center to center) and I inputted a value of maximum deviation of .015 inch then SW would not find the misaligned holes. It would only find the misalignment if I entered a value greater than .125 inch. This tells me then that when I use this feature that I need to input some really odd and high value, like maybe 1 inch. Then SW would find and report all misaligned holes less than that amount but not greater than that amount. Deepak, if after designing parts with holes which were intended to line up and unless those parts were machined in pairs then there will always be some acceptable deviation. Lets say that acceptable deviation is .010 inch. This value of .010 inch is the value I would expect to input as the maximum allowable deviation SW would check and report. But no, this feature is not build that way, which is and continues to be mind blowing. While I just don't get it, I now understand how to obtain the results. I will always use a very large input value and get bogged down reviewing acceptable results which is time consuming. I'm happy to know that you agree with this understanding and appreciate your input.
Rick
--- On Wed, 7/8/09, Deepak Gupta <nokia_mob@yahoo. com> wrote:
From: Deepak Gupta <nokia_mob@yahoo. com>
Subject: [solidworks] Re: Misaligned Holes In Assembly
To: solidworks@yahoogro ups.com
Date: Wednesday, July 8, 2009, 10:45 PM
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What I understand from the Hole Alignment feature is that we need to specify the value larger than the max tolerance. For e.g. take a practical case where you need to fix two plate together using screw and nut. Now because of tolerance on the holes sizes and positional tolerances, there will be a max center deviation. Now if you give the same max value as your Hole center deviation, then even practically the assembly is OK. So you need to specify slightly more value to get the result. I hope this clears your doubts.
Deepak Gupta
New Delhi - INDIA
************ ********* ********* ********
"Wining doesn't mean being first always, wining mean you're doing better than you've done before"
************ ********* ********* ********
--- On Wed, 7/8/09, Deepak Gupta <nokia_mob@yahoo. com> wrote:
From: Deepak Gupta <nokia_mob@yahoo. com>
Subject: Re: [solidworks] Misaligned Holes In Assembly
To: solidworks@yahoogro ups.com
Date: Wednesday, July 8, 2009, 9:50 PM
|
Rick,
I never tried this option. Will check tomorrow and let you the outcome.
Deepak Gupta
New Delhi - INDIA
************ ********* ********* ********
"Wining doesn't mean being first always, wining mean you're doing better than you've done before"
************ ********* ********* ********
--- On Wed, 7/8/09, rick walters <turksnots@yahoo. com> wrote:
From: rick walters <turksnots@yahoo. com>
Subject: [solidworks] Misaligned Holes In Assembly [1 Attachment]
To: "SWUG" <solidworks@yahoogro ups.com>
Date: Wednesday, July 8, 2009, 5:38 PM
[Attachment(s) from rick walters included below]
Hello,
I have a mental block on being able to figure this one out, maybe you can help me better understand what SW had in mind with this feature. When using SW to check for misaligned holes between parts the user input seems to require a value greater than the actual misaligned condition. The attachment shows this condition. Would somebody please explain this to me.
Rick
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Attachment(s) from rick walters
1 of 1 Photo(s)
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