perfect speaker grill without incomplete circle?

[Win Ace]

can anyone show me a tutorial on designing a round speaker grill which only consist of complete circular holes? what is the trick of using pattern for this or there is additional step instead of just pattern?

 

[Win Ace]

View attachment 1764

something like this design

 

[MrCATIA]

In CATIA V5, there are 3 types of Patterns that can be used when a part has the same sized hole, like your speaker grill. A Rectangular Pattern can be used when the holes are equally spaced in one or two directions. A Circular Pattern can be used when an equal number of holes rotate about the center at an equal angle. Since neither of these match the example, a User Pattern is the only option.

A User Pattern is based on a Sketch defining all the center points of the holes. Since each "ring" has a different number of holes, the Sketch can quickly be built by using Equidistant Points to space the number of points on a bolt circle for each ring.

If you have to make many grills with different hole patterns, a PowerCopy or a Macro can be used to automate the process.

 

[Win Ace]

i see... i;ll try User defined pattern and PowerCopy first.... i;m new in catia but i used creo before and i remember in creo, we can directly define pattern in more way and even just add a math formula to it.

 

[MrCATIA]

I just verified the above method:
View attachment 1765

Don't worry about PowerCopy or Macros or even parametrics now - those are something for advanced CATIA users.