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Abstract

A workpiece slide (42) is guided on a workpiece slide guide means (40) which extends transversely of a pivot axis (A) determined by a machine bed (20), the workpiece slide (42) together with its workpiece support (44) defining a central plane (G) at right angles to the pivot axis (A). A feeler means (60) determines the distance of the cutting teeth (12) of a workpiece (10) from a workpiece support (44) when in a measuring position which the tooth tip (18) of a cutting tooth (12) oriented in the direction of the pivot axis (A) of a workpiece (10) received in the workpiece support (44) reaches upon shifting of the workpiece slide (42) in the direction of the pivot axis (A). The feeler means (60) comprises a barrier (70) the length L of which, as measured in the central plane (G) transversely of the workpiece slide guide means (40), is greater than the greatest tooth pitch (T) occurring of workpieces (10). The machine includes control programmed such that the feeler means (60) becomes active before the advance means (50) to scan the tip of a cutting tooth (12) irrespective of the position of the corresponding tooth face (14), and such that the workpiece (12) is scanned once more at the tooth tip (18) of the cutting tooth (12) whose tooth face (14) is in the desired position, and the position of the workpiece slide (42) is corrected if this tooth tip (18) does not lie on the pviot axis (A).

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