The patent of the invention relates to an innovative
numerical control cutting machining method aiming at (sheet
metal) workpiece
welding grooves, which is a
cutting application method combining blaze,
plasma and flying
optics laser and belongs to the field of industrial
welding and
cutting technology. The invention adopts a
machining mode that workpiece actively rotates, the workpiece can be freely clamped, the invention is suitable for
numerical control cutting
machining of the
welding groove with any curved profiles, the cutting quality, the production efficiency and the material utilization are obviously enhanced, and the device cost is low. The invention adopts the mode that the workpiece revolves around tools (cutting
torch) to rotate, thoroughly solves the technology bottlenecks of complex structure (winding and restrictions of connecting cables, gas pipelines, and the like of the cutting
torch caused by the rotation of the workpiece) of traditional
numerical control cutting method, and the like. The technical implementation scheme is that a workpiece active (unlimited) rotary disk arranged on a substrate loads the workpiece; each axis (A, X, Y, W and Z) of the numerical control procedure
control system moves the edge of the workpiece groove to a cutting zone, and cutting
torch (Z) axis automatically falls downwards to a working height and completes initial cutting gesture according to groove angle and thickness of the
programming workpiece; and the workpiece (W) placed on the unlimited rotary disk is continuously matched with the cutting torch to swing (A) to do transverse (X) and longitudinal associated movement after a numerical control cutting
processing program is operated, and the cutting torch is placed in a normal section of a
cut workpiece all along and completes
processing molding of the welding groove of the workpiece. The invention can be widely applied and popularized in industrial welding and cutting field.