Surface flatness detecting device for single crystal square rod

A surface flatness detecting device for single crystal square rod, comprising:

• a clamping assembly, wherein the clamping assembly comprises a first clamper and a second clamper, the first clamper is disposed at a first end of the single crystal square rod, the second clamper is disposed at a second end of the single crystal square rod, and the first clamper and the second clamper are symmetrically disposed relative to an axis of a width side of the single crystal square rod to clamp the first end and the second end, respectively;
• and
• a detecting assembly, wherein the detecting assembly comprises a first detector and a second detector, the first detector is disposed on a first side of the single crystal square rod, the second detector is disposed on a second side of the single crystal square rod, and the first detector and the second detector are symmetrically disposed relative to an axis of a length side of the single crystal rod to detect the first side and the second side, respectively;
• wherein the first clamper and the second clamper rotate the single crystal square rod around the axis of the length side of the single crystal square rod by 90 degrees to detect a third side and a fourth side of the single crystal square rod, after the first side and the second side are detected by the first detector and the second detector, respectively.