The standard model for medium-speed wire cutting involves adding the function of repeated cutting to the traditional high-speed wire cutting, either by reducing the wire speed or by installing a diamond guide wire. With these features, the precision and surface finish of the cut parts are improved in the initial stage of medium-speed wire cutting compared to high-speed wire cutting. However, over time, the processing effects of medium-speed wire cutting gradually diminish, leading to the point where many customers use their medium-speed wire cutting machines as high-speed wire cutting machines.
The repeated cutting function of the middle wire EDM can lead to increased wire loss after machining the same area, which in turn affects the precision and luster of the workpiece. Most middle wire EDMs on the market still use the original fast wire EDM pulse power supply, which is fundamentally unsuitable for the repeated cutting characteristics of the middle wire EDM. Reducing the operating speed of the molybdenum wire in the middle wire EDM also reduces the vibration during the wire EDM process, which is beneficial for improving the precision and surface luster of the workpiece. The stability of the leading wheel still has a decisive impact on the vibration of the molybdenum wire.
The surface finish of the wire cutting process, after multiple cuts, is not as smooth as a single cut made by a newly installed guide wheel on the wire cutting machine. The wire cutting process with a gem guide wire, which mainly draws inspiration from the guide structures of slow wire cutting and piercing machines, shares a common feature with them: the slow traversal speed of the electrode wire and electrode. However, the single-cut operation speed of the wire cutting process is 40-60 times faster than that of slow wire cutting. The high-speed impact and high temperature generated during this process make the gem guide wires on slow wire cutting and piercing machines unsuitable for the requirements of the wire cutting process, leading to rapid damage and affecting the processing quality.
