Patent ID: 6775013
Filing Date: 2004-08-10
Classification: B23Q,G05B

Abstract:
Motion error testing apparatus useable for testing the error motion of the inner end of a spindle rotated about a first longitudinally extending axis or the outer end of a spindle rotatable about a different axis while the inner end remains in a fixed orientation, said apparatus including:a frame having a mounting portion attachable to the outer end of said spindle and an opposite portion having a recess opening onto the end of said opposite portion at the frame; an energy beam-reflecting unit having an inner mounting portion adjustably mounted within said recess and an outer portion located outside of said recess, said outer portion having a curved beam-reflecting surface presenting beam-reflecting points to be spaced varying distances from a source of beam energy to be directed initially to the nearest point on said curved surface, the beam striking other points of said surface if the spindle should wobble in directions transverse to the beam direction, the beam traverse distance to and from the beam source thus being a measure of the spindle error motion; and said frame having thereon means for adjusting the position of said beam reflecting unit in said recess so that a point on said beam-reflecting unit can be adjusted.