Abstract: A technique facilitates performance of a machining operation on a component, e.g. a flange. An embodiment of the technique may employ an externally mounted flange facing machine having an external housing with a hollow interior therethrough. The externally mounted flange facing machine may further comprise a plurality of clamping feet mounted to the external housing and oriented for external engagement with the flange. A surface facing arm assembly may be movably mounted to the external housing for rotation in the hollow interior. Additionally, a tool carrier assembly may be movably mounted to the surface facing arm assembly. A feed assembly may be coupled with the tool carrier assembly to drive the tool carrier assembly linearly along the surface facing arm assembly as the surface facing arm assembly rotates in the hollow interior.

Abstract: A portable computer numerical control (CNC) machine is described. The CNC machine has an X-axis, a Y-axis, and a Z-axis, and comprises: a machine head, a base comprising a pair of X-axis guiding rails; a connecting beam and at least one Y-axis guide rail; a sub-assembly having a platform and at least one Z-axis guide rail on the platform; and a tool assembly secured to the platform of the sub-assembly, as well as corresponding X-Axis, Y-Axis and Z-axis clamps to allow the machine head to move along the X, Y, Z axes. The tool assembly of the CNC machine further allows the machine head to rotate about an axis that is perpendicular to the Z-axis.