ABOUTJINMA

A grinder is a high-speed rotating machine that grinds a workpiece or tool while the disc rotates. Because it will wear out after a long time, the used grinding wheel will change from large to small until it can no longer be ground. Time to switch to a grinding wheel.The structure of the desktop grinder is nothing more than a motor with shafts at both ends, plus two sets of grinding wheel protection plates. So the structure is simple. Use a spanner wrench and wire cutters to remove the screws from the protective plate.After opening the protective plate, you can see the grinding wheel. At the center of the grinding wheel is the shaft of the grinder, on which there are screws and nuts. This is probably the tightening of the grinding wheel.Generally, what we are facing is a grinding machine. One hand clamps the nut on the shaft with an adjustable wrench, and the other hand holds the grinding wheel. Generally, the grinding wheel is stuck, and when the wrench is pressed, the nut will loose...

Vibration problem: Some belt sanders are hung with sand belts. After the machine is started, the machine vibrates very much. If it is not fixed, it will "run around"! What is the reason? The main reason is that the balance of the rotating wheel is not good! The rotating wheels include rubber wheels, guide wheels, and motor pulleys. One of the three rotating wheels has poor precision, poor balance, and poor machine vibration! Another reason is that the parts of the support wheel have too large a fit gap, which causes relative movement between the parts and vibration. Furthermore, the motor is not fixed well, and it also vibrates.Noise problem: The noise is mainly due to insufficient rigidity of the base and supporting parts, and excessive clearance of matching parts (some factories have very poor and backward processing equipment, coupled with poor quality awareness, the manufactured parts are very poor, and there are almost no matching tolerance requirements! ), the selection...

A belt machine, a working instrument, includes an abrasive belt, an abrasive belt housing for accommodating the abrasive belt, a motor, a motor housing for accommodating the motor, a handle, a driving wheel, a driven wheel, and a transmission device connecting the motor and the driving wheel .A belt machine, including an abrasive belt, an abrasive belt casing for containing the abrasive belt, a motor, a motor casing for accommodating the motor, a handle, a driving wheel, a driven wheel, and a transmission device connecting the motor and the driving wheel, and the motor casing It is integrally connected with the handle to form a unit body, and a connecting device connects the unit body to the abrasive belt shell.The above-mentioned unit body can rotate around the axis of the abrasive belt, so that the abrasive belt machine can be located in a comfortable operating position, which can reduce the fatigue of the operator working for a long time.safe operation1. Before starting the sand mac...