Turning machine and method for turning workpieces

A method for producing a first partially machined workpiece and a second partially machined workpiece by turning a first semi-finished product and turning a second semi-finished product in a turning machine, the method including steps comprising:

• providing a turning machine comprising:
• a first spindle, which can be set in rotation for gripping and rotating a first semi-finished product to be turned;
• a second spindle, which is opposite the first spindle and can be set in rotation, for gripping and rotating a second semi-finished product to be turned;
• wherein the first spindle is associated with a first bar load magazine, which is configured to convey the first semi-finished product through a first opening of the first spindle into a machining area located between the spindles;
• wherein the second spindle is associated with a second bar load magazine, which is configured to convey the second semi-finished product through a second opening of the second spindle into the machining area;
• producing a first partially machined workpiece by:
• conveying the first semi-finished product through the first opening of the first spindle of the turning machine into the machining area situated between the spindles;
• gripping the first semi-finished product in the first spindle;
• setting the first semi-finished product in rotation by means of the first spindle;
• turning a starting region of the first semi-finished product by means of a first machining tool of the turning machine within the machining area;
• producing the second partially machined workpiece by:
• conveying the second semi-finished product through the second opening of the second spindle of the turning machine into the machining area;
• gripping the second semi-finished product in the second spindle;
• setting the second semi-finished product in rotation by means of the second spindle and turning a starting region of the second semi-finished product by means of a second machining tool of the turning machine within the machining area;
• wherein the first partially machined workpiece and the second partially machined workpiece are produced simultaneously;
• wherein at least one tool revolver is arranged within the machining area for receiving at least one tool for machining the first semi-finished product to be machined and/or the second semi-finished product to be machined, and wherein the at least one tool revolver has a third spindle, which can be set in rotation, for receiving and for rotating the first semi-finished product to be machined and/or the second semi-finished product to be machined;
• wherein four tool revolvers are arranged within the machining area;
• wherein two tool revolvers each have a spindle, which can be set in rotation and which are configured to each simultaneously receive and rotate one of the semi-finished products to be machined;
• wherein the other two tool revolvers are configured to simultaneously machine the simultaneously rotating semi-finished products;
• wherein production of a finished first workpiece from the partially machined first workpiece also comprises:
• releasing the gripping of the first semi-finished product in the first spindle following the turning of the first semi-finished product;
• gripping the previously machined starting region of the first semi-finished product in one of the spindles of the tool revolver;
• separating the partially machined first workpiece from the first semi-finished product;
• setting the partially machined first workpiece in rotation by means of this spindle;
• turning an as yet un-machined starting region of the partially machined first workpiece by means of one of the machining tools of the tool revolver within the machining area;
• wherein production of a finished second workpiece from the partially machined second workpiece also comprises:
• releasing the gripping of the second semi-finished product in the second spindle following the turning of the second semi-finished product;
• gripping the previously machined starting region of the second semi-finished product in the other spindle of the tool revolver;
• separating the partially machined second workpiece from the second semi-finished product;
• setting the partially processed second workpiece in rotation by means of this other spindle;
• and
• turning an as yet un-machined starting region of the partially machined second workpiece by means of a further of the machining tools of the tool revolver within the machining area.