Wire EDM technology

In wire electrical discharge machining (WEDM), or wire-cut EDM, a thin single-strand metal wire is fed through the work piece, typically occurring while submerged in a tank of dielectric fluid. This process is used to cut plates and to make punches, tools, and dies from any conductive material, including hard metals, that are too difficult to machine with other methods. The wire is held between upper and lower diamond guides. The guides move in the x–y plane controlled by CNC and the upper guide can also move independently in the z–u–v axis, giving rise to the ability to cut tapered and transitioning shapes and can control axis movements. This gives the wire-cut EDM the ability to be programmed to cut very intricate and delicate shapes. Wire-cutting EDM is commonly used when low residual stresses are desired. Wire EDM has no added residual stress because it has no cutting forces. There is little change in the mechanical properties of a material in wire-cutting EDM due to these low residual stresses.

Super Jet AWT

Excellent performance of “Super Jet AWT“ was demonstrated at “Inter Mold 2007“, which was held in April 2007. In the demonstration, auto threading was performed in the most challenging situation in which both entrance and exit hole of start hole are in pockets, making it impossible for upper and lower wire guides to approach the threading hole.

Advantages of “Super Jet AWT”

• Wire is threaded easily through work piece with Pockets on top and bottom surface. Improving threading success rate.
• New guide options give higher machining precision, longer life and lower running costs.
• Wire tip disposal unit can handle thin wires, increasing threading reliability.
• Reliable auto threading through wide angle taper guides.
• Improved threading through tall work pieces, with annealed and heat cut wire

Easy processing of complex shape

Latest “discharging gap detect circuit“ quickly detects the changes in the discharge gap when thickness of workpiece changes. In machining a complex stepped height shape, the circuit feeds back the status of the constantly changing discharging gap and thus saves the bothersome task of changing machining conditions, realising stable high precision machining.