1、 The lathe operator must be familiar with the safety operating procedures, understand the structure, performance, and technical data of the machine tool. After receiving professional skills training and obtaining the corresponding qualifications, one must hold a certificate before taking up the post. 2、 Before driving, check whether each guide rail of the machine tool has been lubricated, whether each lubrication point has been filled with oil, whether the transmission oil circuit is unobstructed, whether there is enough oil in the oil tank, whether the exposed screws are tightened, and whether the electrical switches are functional. Wait for everything Drive only after normal operation. 3、 Before starting work, check the trial operation of the machine tool, whether the lubrication pump is oiled, whether the variable speed operation handles are flexible, whether ...
Motor winding repair 1. Short circuit of stator winding Winding short circuit refers to the direct collision of two copper wires caused by insulation damage to the coil wire, resulting in the current flowing directly into the circuit without passing through the load. The main reasons are high power supply voltage, excessive current, moisture and vibration wear on the winding, and accidental scratching of the outer insulation of the wire during repair of the embedded wire. After a short circuit fault occurs in an electric motor, high temperatures will be generated at the fault location, causing more insulation to burn out. Therefore, when checking for a short circuit fault in a running electric motor, carefully observe the motor coil for any burnt marks or smell after the motor stops running. It is also possible to run the motor without load for a period of time, immediately remove...