How to Resolve Vibration Issues in the Wire Spool of a Wire-Cut EDM Machine

The bearings, shafts, and other components inside the wire spool of a medium-speed wire-cutting machine often develop gaps due to wear. This can easily cause the machine to vibrate, leading to wire breakage. Therefore, it is essential to promptly replace worn bearings, shafts, and other components within the machine. When the wire-reel of a medium-speed wire-cutting machine changes direction, failure to disconnect the high-frequency power supply can cause the molybdenum wire to burn out rapidly due to excessive heat. Therefore, it is crucial to verify that the limit switch at the rear of the wire-reel is functioning properly and has not malfunctioned.

The wire-feeding mechanism of the medium-speed wire-cutting machine comprises guide wheels, the wire-reel, and the wire-frame. As the internal precision of this mechanism degrades, axial play and radial runout within the wire-reel shaft may occur. Here, “precision” primarily refers to the accuracy of the drive bearings.

If radial runout occurs between the wire spools, the tension on the electrode wire gradually decreases, causing slack. In severe cases, the molybdenum wire may disengage from the guide wheel groove or even break. Additionally, axial play between spools disrupts uniform wire feeding, sometimes leading to wire stacking.

To maintain smooth rotation between the guide wheels and the wire-cutting machine's wire-holding spools, carefully monitor for any vibration in the molybdenum wire during reciprocating motion. If vibration occurs, thoroughly analyze the root cause. Additionally, the limit stop block at the rear end of the wire-cutting machine's wire spool must be properly adjusted. This prevents the spool from exceeding the machine's limit travel and causing wire breakage.

If the rapidly moving molybdenum wire comes into contact with the stop block within the wire-guiding device of the medium-speed wire-cutting machine, grooves can easily form, leading to wire jamming and breakage. Therefore, timely replacement is essential. When operating the medium-speed wire-cutting machine, it is crucial to thoroughly inspect the precision of the wire-feeding mechanism.