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Valued Mentor
Valued Mentor
wh
Posts: 388
Registered: ‎12-27-2003
Message 11 of 19 (488 Views)

Betreff: ball pattern in BALL SCREW assembly

10-19-2012 11:43 AM in reply to: lis_wang

Here's my approach.

I've made changes to spindle and ball screw, and made an array of the balls.

 

In the end I tried to turn the spindle and move it through the ball screw, but no luck. I suspect, that this is another sample of Inventor's unsatisfying constraint capabilities.

 

Remark: I know, that normally the balls are moving, too, but I neglected that, because of simplification. And I know, that normally the spindle is axially fixed and just rotating, and the ball screw does the axial movement. I'm in doubt, if this version would be running better.

 

EOP of parts needs to be moved down. Files are Rel. 2012

 

Walter

Distinguished Contributor
lis_wang
Posts: 429
Registered: ‎11-26-2003
Message 12 of 19 (461 Views)

Betreff: ball pattern in BALL SCREW assembly

10-20-2012 05:23 AM in reply to: wh

It is really a clever approach. By usin this method, I have to manually change the quantity of ball in BOM.

 

Thank you very much

Valued Mentor
Valued Mentor
wh
Posts: 388
Registered: ‎12-27-2003
Message 13 of 19 (453 Views)

Betreff: ball pattern in BALL SCREW assembly

10-20-2012 05:45 AM in reply to: lis_wang

You can do the array as separate bodies as well, Lis.

But unless you're in ball screw manufacturing, you're ordering complete elements. It doesn't matter, how many balls are inside.

 

Walter

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JDMather
Posts: 26,157
Registered: ‎04-20-2006
Message 14 of 19 (446 Views)

Betreff: ball pattern in BALL SCREW assembly

10-20-2012 06:13 AM in reply to: lis_wang

Pattern Component will give multiple instances of one ball.  (rather than having multiple balls in one part file)

I have assigned this problem to my class.
I will post my solution once they have attempted the solution.

 

oops, I keep forgetting you are on 2012 - well I'll post a screen shot when they get done.

Please mark this response as "Accept as Solution" if it answers your question.
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Distinguished Contributor
lis_wang
Posts: 429
Registered: ‎11-26-2003
Message 15 of 19 (439 Views)

Betreff: ball pattern in BALL SCREW assembly

10-20-2012 08:15 AM in reply to: JDMather

Thanks JD. I will try your approach as well.

Valued Mentor
Valued Mentor
wh
Posts: 388
Registered: ‎12-27-2003
Message 16 of 19 (394 Views)

Betreff: ball pattern in BALL SCREW assembly

10-30-2012 12:06 PM in reply to: JDMather

Did you try the solution with your class meanwhile, Jeffrey?

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JDMather
Posts: 26,157
Registered: ‎04-20-2006
Message 17 of 19 (388 Views)

Betreff: ball pattern in BALL SCREW assembly

10-30-2012 12:27 PM in reply to: lis_wang

Ah yes, we came up with a good solution, but I forgot about this thread.  I will try to remember to attach the solution tomorrow.  (what is left of a hurricane is sitting right over the top of my head today)

Please mark this response as "Accept as Solution" if it answers your question.
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Valued Mentor
Valued Mentor
wh
Posts: 388
Registered: ‎12-27-2003
Message 18 of 19 (380 Views)

Betreff: ball pattern in BALL SCREW assembly

10-30-2012 01:32 PM in reply to: JDMather

My best wishes for not too much damage by the storm.

Good to see, that you still have access to electricity.

*Expert Elite*
JDMather
Posts: 26,157
Registered: ‎04-20-2006
Message 19 of 19 (374 Views)

Betreff: ball pattern in BALL SCREW assembly

10-30-2012 02:43 PM in reply to: wh

wh wrote:

 

Good to see, that you still have access to electricity.


My wife is peddling the bicycle generator as fast as she can.
The wind has died down here, just some left-over rain. 

We didn't experience any damage on our property, but I haven't ventured down the road yet to check the neighborhood.

Please mark this response as "Accept as Solution" if it answers your question.
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