Abstract: A probe for providing micro liquid drops including a main rod, a limiting portion and a probe tip portion is disclosed. At least one guiding flow way and several storing recesses are disposed on the conical outer surface of the probe tip portion. Each storing recess has a volume that is larger than the volume of the guiding flow way. Also, under the gravity and capillarity effect, the output speed is controlled by the number, size and shape of the guiding flow ways and the storing recesses so that each probe structure is strong, the liquid storing capacity is high, its liquid output is stable, it is easier to manufacture the guiding flow ways, and it is easy to clean.

Abstract: A wire cut electric discharge machine having rollers is disclosed. It has a wire electrode disposed in a working zone of the electric discharge machine. This wire electrode is rolled by a rolling device so that the cross-sectional area of this wire electrode changes from a circular area into an elongated one. After rolled, the wire electrode has two parallel rolled flat surfaces. The working width between these flat surfaces is smaller than the original diameter of the wire electrode before rolled. So, the cutting width is narrower than before. By using the rolled wire electrode, this invention can reduce the cutting width limit. I can improve the precision of the product, without changing the material property of the wire electrode. And, it can reduce the cost of the wire electrode.

Abstract: A wire cut electric discharge machine having several wire electrode sets is disclosed. It mainly includes a cutting machine, several wire electrode sets, and an adjustable unit. Each electrode set has an upper guiding seat, a lower guiding seat, and a wire electrode. Two ends of each wire electrode can be adjusted independently so that the cutting conditions on the workpiece can be easily and precisely adjusted. Hence, the cutting angles can be adjusted independently and the cutting precision is raised than before.