| 摘要 |
<p>@ A gap energizing system for TW electroerosion, in which a fluid delivery assembly (101, 201) has an elongate internal fluid passage longitudinally traversed by a straight-line path for a traveling wire electrode (2) traversing a workpiece (1) while defining a machining gap (G) therewith. The passage is supplied with a machining fluid from an external fluid source and has at its end a nozzle outlet (106, 206) for discharging the supplied fluid as an envelop flow surrounding the eletrode (2) towards the workpiece (1) and into the machining gap (G). Disposed in the internal passage are a precision guide member (117, 217) and an electrode contact means (118, 218, 119, 219). A workpiece contact means (124, 224) is movably mounted on the fluid delivery assembly so as to surround the electrode (2) passing through the nozzle outlet (106, 206) and operably arranged for movement parallel to the straight-line electrode travel path towards the workpiece (1) to make contact therewith for energizing the machining gap (G), only upon development of a fluid pressure in the fluid passage representing delivery of the machining fluid into the machining gap (G).</p> |
