Reply

Bolt Hole circle


Rick
I'm a bit late replying.
Many thanks for your comprehensive responses.
I understand the formula relationships a little.
I drew a bolt circle using the circular function.
I had to ungroup these to be able to use the formula function so that if the main
dimension changed, so did the others.
I notice in your example that there is only one dimension shown to control the group
diameters. Have I gone about this in the wrong way?
Also how is the PCD related to the bolt hole circle so that they are locked together
ie if the PCD is changed, so do all the bolt holes in your example?
The formula calculation assigns arbitary values ie v1019 can these be renamed to
meaningful values?
The angular function is nice as is the rotation from 0 degrees. One point I noticed
that changing the value from zero and then back to zero was that it would not accept
a zero degree value?
Relating back to an earlier question you asked re my origin points. These are used
so that all the holes are established in a positive X Y direction on my mill. No
DRO.

Regards
Geoff

"Ricky Black" wrote:
>Geoff,
>Look at this example.
>Start modifying the dimensions to see how it all stays tied together.
>
>There is a single dimension to modify the diameter of all the holes. They
>
>are all equal to eachother.
>The linear dimensions will reposition the center of the bolt hole circle and
>
>the holes adjust accordingly.
>The 100mmm dimension changes the diameter of the bolt hole circle and the
>
>holes adjust accordingly.
>The 0 degree angular dimension will rotate all the holes around the bolt
>hole circle.
>The black 72 diameter dimension will change the angular spacing between the
>
>holes.
>
>If you have any questions, please ask.
>
>Regards,
>Rick B.
>
>
>



2 REPLIES

Re: Bolt Hole circle

Geoff,
Look at the attachment. The key to making this work is relationships.
Make sure Maintain Relationships is turned on. Make sure Relationship
Handles are turned on.
In this example I drew the large circle. I started the smaller circle by
locating the edge of the larger circle and clicked on it for the center of
the smaller circle. It places a connect relationship to tie the center of
the smaller circle to the larger one. If you change the position or diameter
of the larger circle, the smaller one will move accordingly.
The circular pattern command will not addd the relationships for you. It
simply creates a curcular grouped pattern.
When you drop the group, you can connect the centers of the smaller circles
to the edge of the larger circle. In V100 use the connect command under the
relate command group. Run the connect command. Locate the center of a
smaller corcle by moving the mouse over one of the circles. The circle will
highlight. Key in 'c' for center. It will find the circle center. Then click
on the larger circle. A connect relationship will be placed that ties the
center of the small circle to the edge of the large circle.
I hope this helps.
Regards,
Rick B.


Re: Bolt Hole circle


Hi Ricky
I am getting the hang of it now.
Many thanks for your excellent guidance.
Have a Great Christmas
Kind Regards
Geoff
"Ricky Black" wrote:
>Geoff,
>Look at the attachment. The key to making this work is relationships.
>Make sure Maintain Relationships is turned on. Make sure Relationship
>Handles are turned on.
>In this example I drew the large circle. I started the smaller circle by
>locating the edge of the larger circle and clicked on it for the center of
>
>the smaller circle. It places a connect relationship to tie the center of
>
>the smaller circle to the larger one. If you change the position or diameter
>
>of the larger circle, the smaller one will move accordingly.
>
>The circular pattern command will not addd the relationships for you. It
>simply creates a curcular grouped pattern.
>When you drop the group, you can connect the centers of the smaller circles
>
>to the edge of the larger circle. In V100 use the connect command under the
>
>relate command group. Run the connect command. Locate the center of a
>smaller corcle by moving the mouse over one of the circles. The circle will
>
>highlight. Key in 'c' for center. It will find the circle center. Then click
>
>on the larger circle. A connect relationship will be placed that ties the
>
>center of the small circle to the edge of the large circle.
>
>I hope this helps.
>Regards,
>Rick B.
>
>
>