In some applications you may require a very close fit with a pin, but the location of the pin is not critical (or at least less critical). In that case for ease of manufacture you may apply a loose positional tolerance with tight control on the hole diameter. It doesn't make sense to impose...
Well seems like I'm in the minority...consensus seems to be that showing the angle is the way to go. It still seems weird to show a 90° angle dimension on a drawing but I understand that the tendency will be to assume the Engineer has forgotten to add a dimension, rather than assuming an implied...
Thanks for the responses everyone. I appreciate the recommendation to add the 90° angle for clarity, but that could be said about any 90° angle on a drawing. There are many instances where geometry lines or centrelines do not intersect but an implied 90 applies: see Fig. 7-21 of the 2018...
Section 1.8.12 of Y14.5-2009 indicates that for countersunk holes "...the diameter and included angle of the countersink are specified.".
In the corresponding figure 1-39 the countersink feature is shown dimensioned with a 90° angle.
Why is an angle dimension required when the included angle...
Thanks chez311 that explains it very well. As you mention I think the caveat is if the surface is at a relatively small angle it might not do a good enough job of constraining the rotation, depending on your requirements.
Hi All,
Let's say I have a round bar with Datum A defined as the center axis. Then I cut the bar at an angle, and make this angled surface datum B (inclined datum). Do Datums A and B comprise a fully constrained datum reference frame for additional features, or is a tertiary datum required?
In...
Using surface roughness symbols you can specify "material removal prohibited" (circle inside a vee). Wouldn't hurt to add a note to reinforce the point. I don't think you could expect a manufacturer/assembler to make the correct assumption.
As others have mentioned though I would consider why...
Ah ha seems I grabbed on to OP's "collinear" description incorrectly. pmarc's covered it in regards to positional tolerances...if the tight requirement between the two holes was strictly to have their axes parallel then a parallelism refinement could be applied on the composite positional tolerance.
Per Y14.5-2009 you can use the "Continuous Feature" symbol to control both holes together as a single feature. In this case the coaxiality of the two holes is controlled within the limits of size.
In the case of 4 holes equally spaced about a center axis can you not just draw centerlines between each of the two sets of holes? This invokes the implied basic 90° angle between all the holes (Y14.5-2009, 2.1.1.3). Add a basic diameter for the bolt circle and you are done.
Sure basic angles...
We have been running Enterprise for nearly 2 years and we are very happy with it. Your installation is about the size (9 swx users) where you will see some real benefits with Enterprise over PDMWorks Workgroup.
The UI in enterprise is very easy to learn (integrated with expolorer)which, with...
I've seen this setting turn itself on when running SW on an "inferior" video card, however if you're getting it on an FX3500 it's likely a driver issue as sbaugh indicates. When reinstalling check to make sure you have the driver approved for use with SW (not the latest driver)...
The new CSWP program sounds interesting...I am a sys admin and past attempts to convince management that we need some of our design engineers to become CSWP's have been fruitless. The hefty price tag (though it's cheaper at SW-World) and time required to train and take the exam outweighed the...
Phadreus,
We are still running SW2006 and it appears to be more stable than SW2004 (we skipped 2005), and SW2003. SW still crashes on occasion, but as others have mentioned user education and resolving hardware issues can eliminate a suprising % of stability issues.
SW's battle now is just...
We use PDMWE and I would not classify it as a PLM solution. It is first and foremost a document management system, and it does that very well. It runs on an "open" SQL db so there are opportunities to extract things like Description or Material properties and use them elsewhere. It does...
If it's the config name of the parts that you want shown in the BOM, you will have to add a column to the BOM for each part called $PARTNUMBER, the value of which will be $C for each part configuration.
Note that under BOM settings, "Part Configuration Grouping" must be set to "Display all...
When there are no dimensions on the flat your only realistic option for checking quality is using part templates. However because the laser cutting process is entirely automated there is little that goes wrong if the nesting is done correctly...
We do large weldments with fairly broad...
Can you clarify what is being changed in the assembly? Is it only the configuration of the parts? If so the BOM should already be updating automatically if you have the parts set to "Use Configuration Name" in the Config settings, rather than "Use Document Name", which is the default...
