Detection replacement shaft for cathode roller of electrolytic copper foil machine and measurement method of detection replacement shaft

The invention discloses a detection replacement shaft of a cathode roller of an electrolytic copper foil machine and a measurement method thereof, relates to the technical field of copper foil equipment, and solves the technical problem that an anode tank matched with the cathode roller needs very high processing precision and positioning precision. Before a cathode roller is placed into an anode groove, the detection replacement shaft is matched with a measuring tool, at least four groups of detection and measurement data are determined in the axial direction and the radial direction of an inner arc of the anode groove, each group comprises at least four points, and therefore the machining precision of the anode groove can be detected, the data can be adjusted, and the detection accuracy of the anode groove can be improved. The anode tank is accurately positioned; and the detection replacement shaft is matched with the measuring tool, and the position precision of the roller system directly or indirectly ass