Daily maintenance: 1. When tapping, the end face should be chamfered; the tap should be coaxial with the hole of the workpiece; the axial pressure should be applied at the beginning of the tapping, so that the tap can be cut in, and the axial force is no longer needed after cutting a few turns. 2. When the tap calibration part enters the screw hole, it will retreat 1/4, 1/2 turn every half turn to one turn, so that the chip will be broken and then attack; when tapping the through hole, you should always exit The tap performs chip removal. 3. When tapping the steel workpiece on the steel workpiece, add a little kerosene when tapping on the cast iron workpiece; after using the head attack, and then using the second and third attacks, the tap must be screwed into the screw hole. 4. When the wire is threaded, the end of the workpiece should be chamfered. The end face of the tooth should be perpendicular to the axis of the workpiece; the axial pressure should be applied at the beginning of the wire, and the rotation pressure should be larger; when the tooth is cut on the workpiece, Just don't put pressure on it. 5. When the thread is broken, in order to break the chips and discharge them in time, the teeth should be reversed frequently. 6. The workpiece should be firmly fixed on the clamp and the fixture; when the tap is broken, do not touch the fold at the hand, use the clamp or the sample to punch out, and wear the protective mirror when breaking the wire. (1) The hole of the threaded bottom hole of the workpiece is chamfered, and both ends of the through hole thread are chamfered. (2) The position of the workpiece clamp should be correct. Try to make the center line of the threaded hole horizontal or vertical, so that the tapping is easy to judge whether the tap axis is perpendicular to the plane of the workpiece. (3) At the beginning of tapping, try to put the tap as positive as possible, then apply pressure to the tap and turn the twister. When cutting into 1-2 turns, carefully check and correct the position of the tap. Generally, when cutting 3-4 turns of thread, the tap position should be correct. In the future, it is only necessary to turn the gripper and not to apply pressure to the tap, otherwise the thread profile will be damaged. (4) When tapping, every time 1/2-1 turns of the twister is turned, about 1/2 turn should be reversed, so that the chips are easily discharged after being broken, and the cutting edge of the cutting edge can be reduced due to the sticky chips. (5) When tapping the screw hole, always exit the tap and remove the chip from the hole. (6) When tapping the screw hole of plastic material, it is necessary to lubricate the coolant. For steel materials, it is generally required to use a higher oil or a higher concentration of the emulsion to use vegetable oil or molybdenum disulfide. For stainless steel, oil No. 30 or vulcanized oil can be used. (7) When replacing a tap in the tapping process, first screw it into the tapped thread by hand, until it can no longer be screwed in, then use the winch to turn. When the end cone is finished and exited, avoid turning the gripper quickly. It is best to unscrew it by hand to ensure that the quality of the tapped thread is not affected. (8) When the machine is attacked, the tap and the screw hole should be coaxial. (9) When the machine is attacked, the calibration part of the tap cannot be all in the head, otherwise it will cause disorder when the reverse car exits the tap. Concerned about surprises Label: daily maintenance of the tap and precautions during tapping Previous: The abnormality of the wire threaded wrench and the solution Next: What kind of fan blade sound is small, the air volume is large
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Precautions when tapping 
