Method for sequentially feeding and automatically machining long length articles

A method for sequentially feeding and automatically machining products having a long length, wherein first and second conveyor lines each have a vise located in proximity to a machining area so that the product may be automatically machined at preset sites in succession, said method comprising the steps of:

• machining a leading end of the product comprising the steps of:
• moving a propulsion mechanism to a preset initial position on the first conveyor line,
• transferring the product toward the propulsion mechanism located on the first conveyor line,
• gripping the product by the first conveyor line vise;
• and
• cutting a leading end side of the product to a specified dimension;
• machining an intermediate portion of the product comprising the steps of:
• releasing the grip by the first conveyor line vise;
• advancing the product to a preset distance by the propulsion mechanism against a conveying force of the first conveyor line so that the part of the product machined in said step of cutting is fed to the second conveyor line while a to be machined target site of the product is moved within the machining area,
• gripping an unmachined part of the product by the first conveyor line vise, and
• performing a preset machining process on the to be machined target site of the product;
• and
• machining a final portion of the product comprising the steps of:
• feeding a tailing end of the product into the machining area by the propulsion mechanism against the conveying force of the second conveyor line,
• gripping the work by the second conveyor line vise,
• retracting the propulsion mechanism;
• and
• performing a preset final machining process.