newbie modeling castlenut

[2ms1]

I'm going through the Sham Tickoo wildfire 2 book, doing all the
tutorials, and I'm stuck on one. Was hoping someone could help me
out:



How do you make this castlenut? I started with extrusion tool,
made construction circle, got the hexagon made and extruded just fine,
but then I get stuck on the curves on top and also not confident what
most elegant method of getting all the cuts done is.



Please tell me how you would make this thing. ThanksView attachment 1476

 

[puppet]

once u have made the inner hole.
u can create one of the top cutouts. then pattern "axial" select the axis from the hole. then 6times @ 60 deg.


the hole must be made for the pattern to work, as the axis must be older (higher up in the model tree) than the top cut outs.


but there are a million ways to skin a cat.

 

[2ms1]

How about the rounded edges on top. If you simply add a round on
top edge of the hex, you get uniform top-half of donut-like edge.
However, this thing has edge more like the edges of sharpened part of
pencil. How do you do the rounded edges on this thing?

 

[puppet]

yeah, u can not simply round all the edges. what u need to do is make a revolved cut

 

[2ms1]

please elaborate. I dont know what a revolved cut is. sorry, I'm basically a total newbie.

 

[puppet]

a revolved cut, hmm
picture a circle. to the left of a axis.(drawn as a centerline), u can then revolve this circle around a axsis and u would get a donut.

 

[kbholekar]

Hope this would help you out...View attachment 1477
View attachment 1478

Happy modelling..

cheers

kamal

 

[[-Skint-]]

2ms1,


Keep going at it, these guys on this forum are incredibly helpful. I have been using Wildfire 2.0 now for about 3-4 weeks, and I was stuck on the basics too just as you are. I am starting to explore more and more commands now.


Practice makes perfect.... but I understand the frustration :O)

 

[stevenqneuk]

Hi Everyone


I have used the data to creat a step by step of how I created it. hope it makes sense.


Here is the first sketch used to extrude the nut shape, the dashed circles are CONSTRUCTION lines


View attachment 1483


next I used a flat part of the nut to sketch the castle cutout as shown, I used a centre line and a symetrical constraint.


View attachment 1484


Then I used an AXISPATTERN around the AXIS of the hole, shown here as A_2, you can ether enter the totalnumber of items in the pattern and the angle between the items or click the angle looking button in the dashboard and pro-e will work our the angle for you


View attachment 1485


and finaly usedthe revolve tool with this sketch to CUT the corners off


View attachment 1486


You have to ensure you click the remove material button on the dashboard andthe cut direction is the oncorrect side of the sketch, this is done by clicking the yellow arrow shown


View attachment 1487


and hey presto you have a castle nut, I have shown the model tree in each pic, I hope this helps, oh, almost forgot, this is the final pic


View attachment 1488


I hope this helps, if not please let me know, there are posibley hundereds of ways to model this part, this is just one of them. I can post the .PRT file if you would like, just let me know





Steven

 

[[-Skint-]]

Stevenqneuk,


You know what that is absolutely superb, I dont mean the part lol, I mean the way that you have taken the time to answer somebody`s question in such detail You should start a thread called HELP and post answers to questions like this, very helpful indeed.


Although this piece is nothing to do with me, Thanks for you help anyway

 

[stevenqneuk]

Thanks [-skint-]


I thinka new thread for step by step information like the above examaple is a great idea. Watch this space, I will start one soon. Thanks for the comments. I thought it was the best way to get the information accross.


Steven

 

[AHA-D]

Just kicking in but AFAIK nuts are not rounded at the top but have a straight cut. So keep the revolved cutout but replace the tangent arc with a straight line at an angle.


Alex

 

[puppet]

stevenqneuk

to draw the hex shape the more common way of doing it is....

1 create the 1 central construction circle.
2 then draw ur hex shape with in it.
3 constrain the lengths of the hex shape to be all equal length.


u can then dimension it across the flats or as a diameter.

 

[stevenqneuk]

Hi Puppet


Thanks for the tip. I did try to construct a hex with only one construction circle but found I have to fiddle with line angels, never thought about making all the lengths equal. I do find,using the three circle tequnice, that the smart constraint works quite well so you just use the circle and line commands, you dont have to sort the constraints out after you draw the lines, although, the geometery will look far less confusing with only one circle. I wonder how many other ways there are to draw a hex shape?


Steven

 

[adriansima]

more simpler ... do not round those edges just CUT REVOLVE a line at an angle of 10-15 degrees at a distance according to standard. I try to avoid as much as possible the rounded features


Puppet you're right, that's the way I draw hexagon too. I think the constrains are more near to reality, the hexagon have indeed equal sides, so, why not to constrain them? i prefere to show the SW dimension (wrench opening) and even to tolerate it in part mode according to standard.


Adrian

 

[adriansima]

more simpler ... do not round those edges just CUT REVOLVE a line at an angle of 10-15 degrees at a distance according to standard. I try to avoid as much as possible the rounded features


make hexagon according to what Puppet says, that's my way to draw the hexagon too, Why not to constrain equal sides of hexagon? it's very near to reality!