Clockwise or Counter-Clockwise?

Topics related to wrapped rotary machining in Aspire or VCarve Pro
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Rcnewcomb
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Clockwise or Counter-Clockwise?

Post by Rcnewcomb »

When you enter a positive number, does your indexer turn clockwise, or counter-clockwise as you are standing at the headstock looking at the tailstock?
- Randall Newcomb
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Greolt
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Re: Clockwise or Counter-Clockwise?

Post by Greolt »

That depends which end of the rotary axis the headstock is located.

If the headstock is at the other end of the rotary axis you will get a different answer.

Just because your headstock may be located at one end of the corresponding linear axis does not mean that Joe Blow's setup is the same.

You will find examples of machines with the headstock at either end.

That is why any reference book will refer to the "Right Hand Rule" or a picture telling the same story. It covers every situation.

Greg
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gravirozo
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Re: Clockwise or Counter-Clockwise?

Post by gravirozo »

hello



looking from head, placed on left side, on X axis, and the top of chuck start to moving to you, that is generally positve value,

but you can configure the controller output both way... from shopbot, or from mach or from any controller...



thanks
viktor

bino, that's a very good link... simple and very clear explanation...

Bowber
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Re: Clockwise or Counter-Clockwise?

Post by Bowber »

As I understand it you want the axis to turn such that it matches the axis you replacing.
So if your rotary axis is on the left of the table in line with the X axis then it's replacing the Y and you need + moves to be anticlockwise so that the cutter is cutting what is normally the positive part of the stock (assuming this is how you have set up the table etc.

Steve

CarsonCustom
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Re: Clockwise or Counter-Clockwise?

Post by CarsonCustom »

From what I've encountered, Steve gives the best explanation.
CC

Greolt
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Re: Clockwise or Counter-Clockwise?

Post by Greolt »

I have a friend who lives locally and owns a small homebuilt CNC router.

He has his Z axis move up for negative values and down for positive.

I explain to him that that is not the conventional way to have it and there are advantages to going with convention, fitting in with standard CAM output etc.

But he codes manually and does it the way he wants. I can't understand why, but he is happy.

The same scenario applies to rotational axis direction. If you want to have rotation direction other than convention, then go for it.

What ever floats your boat. It is your machine and no one is going to take away your birthday. :)

However there are advantages to going with convention. For example take a look at Mach3, NCplot, CNCWrapper, VisualMill, Mastercam etc.

Greg

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