Positioning system with adjustable clamping force and milling equipment for rail transit honeycomb workpiece

A positioning system with an adjustable clamping force for clamping a rail transit honeycomb workpiece, comprising:

• a positioning apparatus, comprising a positioning table to support the workpiece;
• and
• a plurality of clamping apparatuses, each clamping apparatus of the plurality of clamping apparatuses comprising a respective turntable, wherein each of the turntables is fixedly disposed on a periphery of the positioning table, a respective top of each of the turntables is connected to a respective mechanical arm, a respective pressure plate is disposed at an end of each of the mechanical arms, and each of the pressure plates is capable of cooperating with the positioning table to clamp the workpiece, wherein
• each of the clamping apparatuses comprises a respective working region having a respective boundary defined by a maximum working range of movement of the corresponding mechanical arm, and wherein the working regions of adjacent ones of the clamping apparatuses have an intersection, the working regions each include a respective non-intersecting region which does not intersect with any other of the working regions, and the working regions of all the clamping apparatuses are capable of covering a machining surface of the workpiece;
• and when machining is performed on the workpiece in one of the intersections, one of the clamping apparatuses that corresponds to the intersection clamps the workpiece, and when machining is performed on the workpiece in one of the non-intersection regions, one of the clamping apparatuses corresponding to the one of the non-intersecting regions moves away from the workpiece, and an adjacent one of the clamping apparatuses adjacent to the one of the non-intersecting regions clamps the workpiece.