The utility model relates to the technical field of
crankshaft grinding machines, in particular to an automatic measuring device for axial control of a
crankshaft grinding machine, which comprises a bottom plate, a fixing component, a hydraulic angle motor, a coupler, a first rotating arm, a connecting plate, a second rotating arm, a measuring arm, a mounting seat, a probe and a transmission shaft. A hydraulic angle motor is installed in the fixing
assembly, the output end of the hydraulic angle motor penetrates through the fixing
assembly to be connected with one end of a coupler, the other end of the coupler is connected with a transmission shaft, and a first rotating arm is installed on the right position of the outer side of the transmission shaft. According to the utility model, the hydraulic angle motor is arranged and can drive the first rotating arm to rotate during operation, and the connecting plate and the second rotating arm form a rotating whole arm to rotate, so that the measuring arm drives the mounting seat and the probe to rotate, the gap between the side surface of the
grinding wheel and the side surface of the journal is measured and controlled, the production efficiency is improved, the operation is simple, and the use is convenient.