# Rotary table shaft and ring system

- Jan 23, 2019-

The shaft and ring system consists of five-axis four-rings, which are N-axis (n-ring), H-axis (h-ring), K-axis (k-ring), M-axis (m-ring), and I-axis from the inside to the outside. The four-axis table has no K-axis.

The N-axis is the inner upright axis, which is the axis of rotation of the inner ring n, which is perpendicular to the plane of the sheet. There is a 0°-360° scale circle on the outside of the n-ring, which can read the angle of the N-axis rotation. The inside of the n-ring is inlaid with another metal ring, which carries a round glass piece for placing a thin piece and a hemisphere thereon. The metal ring has a spiral ring on the back side, and the four small teeth on the upper side are adjusted to adjust the hemisphere. The height of the system (including the sheets). There is a metal rod on the lower right side of the n-ring (there is no such rod on the table), and it can be locked by locking it, but it does not need to be locked during normal operation.

The H-axis is the north-south axis, which is the horizontal axis of the north-south direction and is in the same plane as the corresponding h-ring. Rotate the H-axis so that the h-ring (and carrying the n-ring) is tilted east or west, and the corner can be read by the scale arc on the east and west sides. The north end (or the south end) of the H-axis has a brake screw that locks the H-axis.

The K-axis is the inner east-west axis, which is the horizontal axis in the east-west direction and is in the same horizontal plane as the corresponding k-defect. By rotating the K-axis, the k-ring can be aligned with the N, H-axis and the corresponding n, h-rings to the south or north, and the angle of inclination can be read on the scale arcs at the north and south ends. The right shaft of the K-axis is equipped with a lock shaft screw for the shaft. When working on a five-axis table using the four-axis method, it needs to be locked at 0°. The four-axis table does not have this axis.

The M-axis is an external upright axis that is perpendicular to the corresponding m-ring. When the m-ring is horizontal, the M-axis coincides with the microscope axis. The m ring is engraved with a 0°-360° scale to read the angle of rotation of the M-axis. When the m-ring is at 90°, the original position of the M-axis is zero (the original Soviet-made rotary table 0° is the original position) . Rotating the M-axis will drive the internal shaft and ring to rotate together, affecting the position of the H and K axes. The fixing screw of the M-axis is on the right-hand shaft drum.

The I axis is the outer east and west axis, and this axis is also the horizontal axis in the east-west direction. Rotating the I axis can make m bad and carry the k, h, n rings to the south or north. The I-axis rotation angle is read by the scale and vernier on the right end drum. There is a fixing screw for the shaft at the north end of the drum.