Relational Patterning a flare

[strevo]

I am trying to get a set of holes that flares to follow a tapered box shape. I know I can just pattern each row of holes individually to equally space them out across the surface, but I would like to be able to create one pattern defined with relations that will do this. I have tried several different methods, but nothing is working right. I can't seem to get the model to upload, so here is a screenshot of what I am trying to do. Each row across is patterned with a relation along these lines:


memb_i = (2*(d82-d7))/(P72-1)

 

[puppet]

looks more like a 2d pattern which is centered on a circle

pattern on ur pcd ( pattern off the angle)
patten radially out ( pattern off the pcd )

This will only work for the tapper being equal on both sides.

 

[gondi]

strevo,


as you are defining therelation for each and every row horizontal wise you are getting the patteren. But i was trying the relation only in column wise that memb_v. it is giving some error i am checking it.


My intention of doing memb_v is if we do one dim patteren as memb_i in first direction and memb_v in second direction we can achieve our requirement this one method.


2. another easiest method is table pattren. represent x,y we can achieve the patteren in single patteren direction.


Regards


Sanjeeva Kumar. G

 

[strevo]

looks more like a 2d pattern which is centered on a circle

pattern on ur pcd ( pattern off the angle)
patten radially out ( pattern off the pcd )

This will only work for the tapper being equal on both sides.

I have tried a radial pattern, but I don't want the lines across to have an arc. They should be straight across. It is not very noticable on a surface this size, but I do have one I have to do that is twice as wide where the arc becomes very noticeable.


-strevo

 

[strevo]

strevo,


as you are defining therelation for each and every row horizontal wise you are getting the patteren. But i was trying the relation only in column wise that memb_v. it is giving some error i am checking it.


My intention of doing memb_v is if we do one dim patteren as memb_i in first direction and memb_v in second direction we can achieve our requirement this one method.


2. another easiest method is table pattren. represent x,y we can achieve the patteren in single patteren direction.


Regards


Sanjeeva Kumar. G

Sanjeeva,


I was trying a similar thing, but having no luck. I can get the patternt to flare out, but not at the correct rate for each row. I was using this equation:


memb_i = (d689-1.12+(4*idx1*tan(2.334)*d723))/(p726-1)





I think the problem is with idx1. I am not sure exactly what that is referring to, and I can't figure out how to get pro to show me the instance number for each hole. Please let me know if you have any luck. I am new to this relational patterning thing, and still trying to learn how memb_i, memb_v, and lead_vwork, as well as idx1 and idx2. Is there anywhere that describes how to usethem in better detail than the pro help description? Thanks.


-Steve

 

[strevo]

For those interested, I did finally figure this out. Here's the relation I used:


/* for each horizontal line (idx1) the total spacing (memb_v) equals/
/* the distance from the edge plus the instance times double the distance/
/* to the center plane divided by the total number of holes minus 1
/* d8 is the distance from the edge
/* d9 is the distance in the first direction
/* p16 is the total number of holes across
/* tocent is the distance from the first hole to the center plane
B = 180-angle
tocent = 7.21558
memb_v = d8+(idx2*2*(tocent+(idx1*d9/tan(B))))/(p16-1)

 

[gondi]

congrats,


can u provide the screen shot for d8 and d9 dimensions which your are explained in the mail.


Regards


gondi