Guide body member for a wire electrode in a wire-cutting electroerosion machine

A guide body for constituting at least one of a pair of guide members for a continuous wire electrode axially advanced continuously to travel through a cutting zone from an inlet side to an outlet side in a wire-cutting electroerosion machine having means for applying tension to the traveling-wire electrode across the inlet and outlet sides and the guide members disposed intermediate the inlet and outlet sides for rectilinearly supporting the traveling-wire electrode therebetween and positioning the axis thereof in a predetermined machining relationship with a workpiece in the cutting zone,

• the guide body comprising:
• a first segment defining a continuous elongated wire-receiving groove having a first portion which is rectilinear and proximate to said cutting zone and a second portion which is arcuate and remote from said cutting zone, the groove being V-shaped in cross-section continuously over said first and second portions and thereby defining a pair of continuous and elongated wire-bearing surfaces adjoining with an angle to form a V-shaped in cross-section;
• and
• a second segment coupled to said first segment for holding said wire electrode traveling in said first portion of the groove in a bearing contact with said surfaces in said first segment.