Precision thread cutting machine - has rotary drive spindle for workpiece ŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸŸ coupled to rear grinding device

摘要

The thread cutting machine has a machine bed (1) carrying a table (2) with opposing supports (3,4) for the machined workpiece (5) and a grinding head (20) with a rotary grinding disc (28). One of the supports (3) is attached to a drive spindle (6) coupled via a cinematic transmission to a reargrinding device (34) which is switched via a control coupling (45), incorporated in the cinematic transmission. A matching block (46), used to match the angular positions of the spindle (6) and the rear grinding curve (36) is electrically coupled to the control coupling (45), with further outputs (61,62) fed to the rotary drive for the workpiece (5). ADVANTAGE - Precision thread cutting with long machine working life.