Device for measuring extension amount of clamping head of electric spindle

The utility model discloses a device for measuring the extension amount of a clamping head of an electric spindle. The bottom of the dial indicator body is threadedly connected with the measuring rod.The periphery of the dial indicator plate in the middle of the dial indicator body is clamped and detachably and fixedly connected into the clamping device. The rear end of the clamping device is detachably and fixedly connected with the upper portion of the fixing frame. The measuring rod vertically penetrates through the center of the fixing frame and extends downwards, the bottom of the measuring rod is fixedly connected with a measuring disc, the bottom of the fixing frame is inserted into the calibration block, the bottom of the measuring disc abuts against the top of the calibration block in a detachable mode, and the bottom of the measuring disc abuts against the main shaft clamping head in a detachable mode. The device for measuring the extension amount of the clamping head of theelectric main shaft is si