Re: CNC - Positive Quadrant

["Bob La Londe" <none@xxxxxxxxxx>]

Jim" <alarminex@xxxxxxx> wrote in message
news:6b67f2cb-fd3c-44f7-b740-f367a4e39934@xxxxxxxxxxxxxxxxxxx
> 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 planning easy so it makes sense. When you place a vise square on the
>> table the moving jaw to accommodate different size stock is in the
>> negative direction usually. This requires touching off and relocating
>> ZERO for Y a requirement for every single job or part of a job after
>> rotating a part. Even those that don't require a huge amount of
>> precision. The obvious solution is to design a vise with the screw drive
>> on the other end positioning the moveable jaw in the positive direction.
>> The less obvious but much easier solution, is to work in the X+ Y-
>> quadrant or move your work to X+ Y- quadrant after you have done all your
>> calculations, layout, and planning. (FYI: I tend to work with XY ZERO in
>> the center of my stock because I do a lot of rotations around an axis
>> and/or symmetrical work, then I move my work to the positive quadrant so
>> I can just touch off rather than touch off and calculate.) I was trying
>> to develop some work processes that allow me to do certain types of jobs
>> and setups faster, but then after typing all this it occurred to me that
>> for most of you guys its probably all mind numbingly obvious. LOL.
>
> Well, ummm ahhhh uhuh, yep ..... seems obvious to me  ..... how bout you
> guys?

Well, of course I expected it would be obvious for you Jim.

Sorry, guys.  Accidentally posted to wrong group.