A method for the noncontact measurement of the removal of material in the case of the inner round fine machining of a bore, which is introduced into a workpiece

摘要

A method for the noncontact measurement of the removal of material in the case of the inner round fine machining of a in a workpiece (10) inserted, in particular small bore (11) by means of ultrasound, in which a into the bore (11) in the workpiece (10) immersion end machining tool (14) with a working medium arranged on its circumference on the inner wall surface (111) of the bore wall (112) and in this case the machining tool (14) and / or the workpiece (10) rotates, characterized in that the bore wall (112) by means of a of an oscillator (27) excited ultrasonic transducer (22) with a sequence of sinusoidal ultrasound - transmission signals having a short signal duration (burst) is exposed to sonic waves, as a result of reflections in the workpiece (10) echo signals produced by means of the ultrasonic transducer (22) is received and is converted into electrical signals received are that, in each received signal the phase difference (δφ) of a by reflection of the ultrasound - transmit signal to the inner wall surface (111) of the bore wall (112) resulting rear wall - echo signal is measured with respect to a reference signal, that the change in the phase difference (δφ) determined in successive received signals and from this the material removal is determined, and that the repetition rate of the..