What is U and W in CNC?

U and W are axes used in some CNC (Computer Numerical Control) machines, particularly in turning centers used for cylindrical parts. The U and W axes are typically used in combination with the X and Z axes to provide additional control over the position and movement of the cutting tool.

Here’s a brief explanation of the U and W axes:

U-axis: The U-axis is used to control the position of the cutting tool in the radial direction (parallel to the axis of rotation). The U-axis is perpendicular to the X-axis and moves the tool toward or away from the centerline of the workpiece.

W-axis: The W-axis is used to control the position of the cutting tool in the axial direction (along the axis of rotation). The W-axis is perpendicular to the Z-axis and moves the tool closer to or farther away from the chuck or spindle.

Together, the U and W axes allow the cutting tool to move in all three dimensions (radial, axial, and tangential) around the workpiece, allowing for precise and efficient machining of cylindrical parts.

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