Indexer center line question

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M Queen
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Indexer center line question

Post by M Queen »

If you notice, there is a main part of this object and only a small projection on the side. I'd like to set the center line up on that main shaft and let the small projection be offset. But my center line is set to accept the small projection into the calculation of the center point. This throws everything off balance in the indexer.

Is there any way to choose my own center line on this part?

Thanks in advance for any suggestions.

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Mike Queen
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ohiolyons
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Re: Indexer center line question

Post by ohiolyons »

I don't know if it is possible to do what you want.
I know you can move the model around to account for potential undercuts.
You may be able to take advantage of this to accomplish what you are trying to do.
Vectric has tutorials concerning moving a model to minimize undercuts.

Things to consider:

1 You will require a larger blank by moving the center point (CP) to the middle of the larger cylinder.

2 It will also increase your machining time.
John
CNC in Kettering, Ohio

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mtylerfl
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Re: Indexer center line question

Post by mtylerfl »

Another approach might be to make a tiny raised area on the opposite side of the raised “tab” protruding the same distance.

This would “force” the part to be centered on the main cylinder.

(BTW, I think the part would come out just fine, leaving it as-is. It’s just visually “disturbing” to us humans to see it “off-center” from that main cylinder.)
Michael Tyler

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dealguy11
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Re: Indexer center line question

Post by dealguy11 »

It's been awhile since I did rotary work, but if you set up the diameter of the part as the diameter of the shaft plus twice the thickness of the protrusion then the centerline should go down the middle of the shaft.
Steve Godding
D&S Artistic Woodworking http://www.dsartisticwood.com

M Queen
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Re: Indexer center line question

Post by M Queen »

Thanks guys!
Mike Queen
Microsystems World CNC (WinCNC)
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