Pitch Circle Diameter parameters

[1oldcaduser]

I have a group of 15 holes on a pitch circle diameter with a constant angle. How can I parameterize the sketch to enable diameter of hole and PCD and angle changes (If all this is possible) Also is it possible to change the number of holes within the sketch with a parameter.

 

[duncancat]

See if this works for you -
Create 3 user defined parameters using the FORMULASARAMETERS panel, say "hole dia" , "pcd" and "angle"(making sure the types are length, length and angle respectively). These then appear in the specification tree under Parameters.
Create your sketch with a construction circle and a point coincident on the cicumfrence. Right click the dim for the circle, go to edit formula and make the dim equal to "pcd".
Exit sketcher, and create a hole on your point on the sketch. In the Diameter field of the HOLE DEFINITION panel, right click, select edit formula and make the Diameter equal to "hole dia". Fianlly, create a circular pattern. In the Angular Spacing field of the Circular Pattern Definition panel, right click, edit formula and make the spacing equal to "angle". You can now control your 3 varaibles be double clicking them in the parameters branch in the specification tree.
Hope I explained this ok.
Good Luck

 

[duncancat]

- You can also amend the number of holes using the same principal - create a parameter eg "instances". In the instances field of the Circular Pattern Definition panel right click, edit formula and make the number of instances equal to "instances" / 1mm.

 

[1oldcaduser]

Thanks for the info. I will try it thank you