Abstract: In a method for machining a chamfer at a pipe end, clamped in a radial clamping device, to exact positional and dimensional tolerances as a function of a measured course of an inner and an outer diameter of the pipe, an actual position of the pipe end clamped in the radial clamping device is determined with a first sensing device. Based on the determined actual position, in a controlled manner a machining tool is quickly advanced to the pipe end. With a second sensing device at least one of the actual inner diameter of the pipe and the actual outer diameter of the pipe is determined, and optionally the course of one of the actual inner diameter and the actual outer diameter about the circumference of the pipe is also determined. The machining tool is adjusted based on one of the actual inner diameter, the actual outer diameter, the nominal inner diameter and the nominal outer diameter.

Abstract: Process and arrangement for cutting and/or chamfering pipe front rims of pipes, in particular thick-walled pipes which are used for manufacturing ball bearings. The process includes the steps of measuring the actual external diameter of the pipe or inputting the data of the nominal external diameter of the pipe, moving of at least one cutting head towards abutting contact with the exterior surface of the pipe in a rapid transverse motion in accordance with measurements stored in a control unit, switching the feed motion and/or the cutting speed to conform to the machining process which has been adapted to the material of the pipe for the rapid cutting of a ring piece from the pipe blank. The external periphery of the pipe generally consisting of a hard zone which is being cut by a slower cutting speed and said cutting speed is increased once said hard zone has been fully traversed by the cutting tools mounted on the cutting head.

Abstract: In a method for machining a chamfer at a pipe end, clamped in a radial clamping device, to exact positional and dimensional tolerances as a function of a measured course of an inner and an outer diameter of the pipe, an actual position of the pipe end clamped in the radial clamping device is determined with a first sensing device. Based on the determined actual position, in a controlled manner a machining tool is quickly advanced to the pipe end. With a second sensing device at least one of the actual inner diameter of the pipe and the actual outer diameter of the pipe is determined, and optionally the course of one of the actual inner diameter and the actual outer diameter about the circumference of the pipe is also determined. The machining tool is adjusted based on one of the actual inner diameter, the actual outer diameter, the nominal inner diameter and the nominal outer diameter.