Skip to main content
ptc-49580591-Visitor
1-Visitor
June 10, 2013
Question

parametric point pattern

Is point pattern parametric?????????

and if it is can anyone tell me that how we can make it parametric ??????????

Give one example of it????????


This thread is inactive and closed by the PTC Community Management Team. If you would like to provide a reply and re-open this thread, please notify the moderator and reference the thread. You may also use "Start a topic" button to ask a new question. Please be sure to include what version of the PTC product you are using so another community member knowledgeable about your version may be able to assist.

10 replies

TomD.inPDX17-Peridot
17-Peridot
June 10, 2013

Point patterns of patterned features are parametric, yes.

The sketch controls the points and if you use guide curves of surfaces, it will respond parametrically.

When you define the feature pattern, use datum points in an internal sketch (references; edit). Options gives you lots of ways to relate the pattern to other features.

Have you looked at the help files?

Translate
ptc-49580591-VisitorAuthor
1-Visitor
June 11, 2013

Thanks for ur kind help.

but my concern is tha for a model i have made a sketch with 24 holes on a certain PCD and now it i have to change the no of holes to 36 from a excel parameter.

is it possible by Point pattern automatically????????

Translate
TomD.inPDX17-Peridot
17-Peridot
June 11, 2013

I am not certain I understand your application although other might understand better.

I have not used Excel files to drive part parameters.

Normally, family tables manage changing patterns for parts that define several configurations.

In family tables, you specify the parameters you wish to apply to each configuration. One may have 24 holes and the angle for the angle for the bolt circle is 360/24 where another part would have 36 holes and the angle would be 36/360.

Are you maybe asking how to update a family table using an excel file?

We can help better if we know more about your application and what you already understand.

Translate
BrianMartin13-Aquamarine
13-Aquamarine
June 10, 2013

In addition to Tom's excellent reply, I wanted to add that to use patterned points in a sketch, be sure to use Geometry Points, not Construction Points. If you use a construction point, you will not be able to use it as the basis for a point pattern feature.

If you're having difficulty with point patterns, make sure you're using the right type of points!

Thanks,

-Brian

Translate
TomD.inPDX17-Peridot
17-Peridot
June 10, 2013

Good point on the points, Brian. I always called them datum points but now I see my error after hovering on the icons

Translate
BrianMartin13-Aquamarine
13-Aquamarine
June 10, 2013

Yeah they always were datum points until PTC removed the Axis Point option and then created the Geometry Point and the Construction Point.

Honestly I think they just confused things. It was easier to understand before. Add a point... and it shows up as a point. Add an axis point... and it shows up as an axis.

Had they allowed you to create an AXIS using a sketch even if that sketch was standalone and not tied to a feature (like a cut or protrusion), that would've been something. Instead they gave us this messy hodgepodge and most people couldn't tell you the difference between the two without looking for that table that explains them both (in the help files). Heck, most people don't know about the table! (See below).

axis_point.png

Oh and the part in the table that says you can create an axis in a sketched curve using a datum axis is a misnomer. No one's trying to create an axis parallel to the viewing plane in a sketch (exceptionally rare). Instead, you'd like to create one normal to the viewing plane (like the old axis point function or like the new geometry point in an extrusion).

Translate
vzak12-Amethyst
12-Amethyst
June 10, 2013

One small additiona to the above : besides dketched points, also array of Datum Point feature can be used as a reference. Means you can create several points under Datum Point feature, reference one of them by another feature (or components placement), and later pattern it by the while array.

This just adds 3D aspect to point pattern.

Translate
Terms & ConditionsAccessibility statement