Closed loop depth control device

The utility model discloses a closed loop depth control device, including the main shaft, main shaft upper portion is connected with the fixing base, install servo motor on the fixing base, install the transmission cover on servo motor's the synchronous pulley, the transfer line is installed to the inner chamber of transmission cover, the transfer line is parallel with the main shaft, but be connected with the actuating mechanism of actuation transmission pole up -and -down motion on the transfer line, the lower extreme of transfer line is connected with batch pole, the below of criticizing the pole faces waits to twist the screw rod in the product, the below of screw rod is equipped with the sensor. The utility model discloses closed loop concentration control device commonality is strong, can make the screw rod of different sizes twist to the appointed degree of depth, and improve the screw rod greatly and twisted the precision of income, and it is with low costs. 本实用新型公开了种闭环深度控制装置，其中包括主轴，所述主轴上部连接有固定座，所述固定座