Re: CNC - Positive Quadrant

[NickMark <nmarkowitz@xxxxxxxxx>]

On Monday, August 19, 2013 2:01:04 PM UTC-4, Bob La Londe wrote:
> I have noticed that quite a lot of people position parts in CAM in the
>
> positive quadrant of the Cartesian plane.  It makes a lot of calculation and
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> planning easy so it makes sense.
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>
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> When you place a vise square on the table the moving jaw to accommodate
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> different size stock is in the negative direction usually.  This requires
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> touching off and relocating ZERO for Y a requirement for every single job or
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> part of a job after rotating a part.  Even those that don't require a huge
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> amount of precision.
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>
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> The obvious solution is to design a vise with the screw drive on the other
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> end positioning the moveable jaw in the positive direction.
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>
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> The less obvious but much easier solution, is to work in the X+ Y- quadrant
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> or move your work to X+ Y- quadrant after you have done all your
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> calculations, layout, and planning.
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>
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> (FYI:  I tend to work with XY ZERO in the center of my stock because I do a
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> lot of rotations around an axis and/or symmetrical work, then I move my work
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> to the positive quadrant so I can just touch off rather than touch off and
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> calculate.)
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>
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> I was trying to develop some work processes that allow me to do certain
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> types of jobs and setups faster, but then after typing all this it occurred
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> to me that for most of you guys its probably all mind numbingly obvious.
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> LOL.

I have several machine shops i do repairs for and its amazing to watch those machines work and do there thing. One of these days when i have time and shop owner has time wants to show me how to program one