Means two degrees of freedom and the adjustment method dense ball bearing and the annular space on a biaxial composite drive

Two degrees of freedom and the adjustment method is a precision instrument and apparatus TECHNICAL FIELD dense ball bearing and the annular space on a biaxial composite drive; proposed by the present invention is a kind of work support columns A, support posts drive B, the drive unit A and unit B for reclining table; two worktable drive unit to rotate about the X-axis and Y-axis, the drive unit with the worm gear; ball ring rigidly connected with the work surface, as a structure bowl base ring and cooperating with the ball, bowl filled vias, each of the spherical rolling bodies embedded in the through hole, the ball landed on the spherical rolling member ring; a is rotated by the driving unit drives the work surface about the Y axis, and a drive unit driving working table B about the axis X is formed composite motion, to adjust the inclined state of the work surface into any desired position; the present invention establishes a balance between high precision, high stability and a large two-dimensional motion adjusting means carried.