The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 19, 1977
Filed:
Apr. 08, 1975
Mario Pozzetti, Bologna, IT;
Roberto Rossi, Sofia, IT;
Abstract
A method for controlling and regulating the working cycles of a machine tool on a workpiece, including the steps of measuring the workpiece during the machining and programming the feed speed of the tool depending on another variable quantity, which foresees generating a signal responsive to the elastic strains suffered, during the machining, by the kinematic chain comprising the workpiece and the tool, as a consequence of the tool thrust. The signal is used for controlling the feed speed. An apparatus for controlling and regulating the working cycles of a machine tool including a measuring device for the measurement of the sizes of the workpiece being machined, a stepping motor, a digital counter, a digital analogue converter and adapter responsive to the position of the tool relative to a reference position, a differential amplifier, a program unit for programming the feed speed of the tool and a control unit for varying the feed speed. The stepping motor, digital counter, digital analogue converter and adapter responsive to the position of the tool and the measuring device are connected to the differential amplifier adapted to provide a signal responsive to the elastic strains suffered, during the machining, by the tool, workpiece and kinematic chain, due to the tool thrust. The output of the differential amplifier is connected to the program unit for varying the feed speed of the tool depending on the elastic strains.