Machine for machining workpieces with cutting teeth, especially saw blades

A machine for machining workpieces (10) which have cutting teeth (12), especially saw blades, comprising

• a machine bed (20) which defines a reference axis (A),
• a workpiece support (82) on which a workpiece (10) can be arranged such that the tooth tip (18) of a cutting tooth (12) to be machined will lie on the reference axis (A),
• a tool head (46) in which a tool spindle (52) adapted to be equipped with a disc-shaped tool (100) is supported so as to be driven in rotation about a spindle axis (C), and
• an assembly for movably supporting the tool head (46) on the machine bed (20) which assembly comprises
• a reciprocating slide (34) movable back and forth along a reciprocating slide guide means (32) transversely of the reference axis (A),
• a feed slide (24) adapted to be advanced along a feed slide guide means (22) transversely of the reciprocating slide guide means (32), and
• a pivot bearing means (42) defining a pivot axis (B) parallel to the reciprocating slide guide means (32) about which axis the tool head (46) is pivotable by a pivot drive means (60) from a normal position for machining surfaces of the cutting teeth (12) extending parallel to the reference axis (A) by means of an active face (106) of the tool (100), into inclined positions for machining oblique surfaces of the cutting teeth (12) by means of the same active face (106) of the tool (100), characterized in that,
• the pivot drive means (60) comprises a numerically controlled motor (62), and
• the inclined positions of the tool head (46) are determined without stop means exclusively by the pivot drive means (60).