Upper guide assembly for a wire cut electric discharge machine

An upper guide assembly for a wire cut electric discharge machine, comprising:

• a body having a wire path extending straight in a vertical direction;
• an upper nozzle connected to a lower portion of said body for discharging a jet of machining fluid out of the upper guide assembly and the upper nozzle having its center axis aligned with the wire path;
• and
• means for forming a pillar of a pressurized machining fluid in the interior of the upper guide assembly by also supplying the pressurized machining fluid into the body independently of the jet of machining fluid supplied to the upper nozzle, the pillar having its center axis aligned with the wire path in the interior of the body, such that a wire passing through the wire path in the upper guide assembly is guided and held by the pillar, said means for forming the pillar of the pressurized machining fluid in the interior of the upper guide assembly including:
• a hold jet nozzle having a through-hole with its center axis aligned with the wire path;
• and
• a fluid supply passage communicating with the through-hole, said fluid supply passage being supplied with the pressurized machining fluid during an operation of the wire cut electric discharge machine.

An upper guide assembly for a wire cut electric discharge machine, comprising:

• a wire path which is set to extend straight in a vertical direction;
• a body;
• a hold jet nozzle connected to an upper portion of the body;
• and
• an upper guide connected to a lower portion of the body;
• said body including an electrode roller for a wire and an electrode pinch roller capable of both coming into and coming out of contact with said electrode roller,
• said hold jet nozzle including a through-hole having a center axis aligned with the wire path, and a supply passage for pressurized machining fluid communicating with the through-hole, said supply passage being supplied with the pressurized machining fluid during an operation of the wire cut electric discharge machine, and
• said upper guide being mounted to a lower portion of the body, and including, in its interior, a die guide and an upper nozzle both with center axes aligned with the wire path.