① Pulling and unloading of shaft end parts of ordinary machine tools. When using various pullers to pull and unload parts such as pulleys, gears and bearings mounted on the shaft end, when pulling and unloading, the pull hook of the puller should be kept parallel to the center line of the shaft, and the contact between the hook and the parts should be smooth, otherwise it is easy to hit Refined. In order to prevent slippage, a puller with a non-slip device can be used, and the inner hole of the threaded sleeve of this puller is empty with the lead screw. When in use, withdraw the threaded sleeve for a few turns, and rotate the screw to drive the nut to move outward. After the bearing is fastened by the pull hook through the anti-skid plate, the threaded sleeve is tightened against the nut, and the bearing can be pulled out by turning the lead screw.
②The pulling and unloading of the main shaft. Use a special puller to pull and unload the spindle. When in use, pass the pull rod through the inner hole of the main shaft, tighten the nut 2, and turn the handle. The spindle can be pulled out (Note: Before turning the handle, the positioning parts on the spindle should be loosened). Drive shaft with central screw hole. This method is also commonly used for pulling and unloading.
③ Pull and unload the sleeve. When pulling and unloading the sleeve, a suitable pulling tool is generally selected according to the situation
④ Pull and remove the hook key. The hook key has a slope of 1:100, which can transmit torque and the fork can be used as an axially fixed part. When assembling, the key is pressed hard, and the combination is firmer. Commonly used hammer and chisel to extrude the key, which is easy to damage the parts. The special puller is more reliable to disassemble, and it is not easy to damage the parts.