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Spatial Rotation and planar Rotation


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I'm new to calypso software , I have been working for a month but still I don't know what is the use of the spatial and planar Rotation in base alignment.. Can anyone tell me about it
I have searched in web but not clear about it
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The base alignment is all about immobilizing your part. This consists of controlling 6 degrees of freedom in MOST cases. There are 3 degrees of translation or as we might refer to the X, Y and Z origin. And, 3 degrees of rotation, specifically the rotation about the X, Y and Z axes.

The Spatial, or what is now known as Rotation in Space. (On a side note, Calypso has consistently maintained naming conventions for decades but have changed things like Probe System to Stylus System and Probe to Stylus because they refer to the sensor as the Probe, but I never, ever figured Spatial would get new name...... Anyway, I digress.) The Spatial Rotation controls rotation about 2 axes. Typically, there is a plane or a cylinder on a part that is the major feature and will likely be used for the Spatial Rotation. For example, a plane on top of the part controls rotation about the X and Y axes but not the Z. A cylinder standing upright parallel to the Z axis does the same. The "Planar Rotation" refers to rotation about the Z axis so a feature capable of controlling this rotation would be used, i.e. a plane or line on a side perpendicular to the top, or a hole on the top or side of cylinder.

I could go on and on but I hope this helps....
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Do you have any GD&T books? They should describe the six degrees of freedom and how a part is constrained by them. You will want to understand that in order to understand what is constrained by any datum reference frames you find on the part prints. I would suggest ASME Y14.5.
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