Rotary spindle system extends EDM applications

Previously rotary axes were introduced to support the accurate machining of small round workpieces on Wire-cut EDM machines, but this model combines high a precision rotating spindle and an NC-controlled dividing table. With a rotating speed of up to 1,000 RPM, an indexing accuracy of ± 5", and a radial run-out of < 0,003 mm, prior to the launch of the H80R.MNC, rotationally symmetrical workpieces needed to be machined on a rotating spindle, then transferred, clamped and re-aligned on a dividing table, to allow the machining of angular features. The Hirschmann's rotating/indexing spindle H80R.MNC brings the two operations together. The H80R.MNC is equipped with a manual or pneumatic Hirschmann chuck. Connected to this standard interface is a newly patented, adjustable clamping element that can be used alongside the conventional collet chuck. Using this arrangement allows workpieces up to 20 mm diameter to be clamped, while radial run-out and concentricity can be adjusted easily to a value of < 0,001mm. The introduction of a presetting spindle means that components can be set-up off-line, while the machine is in operation, leading to an increase in machining hours.