METODO E MACCHINA PER LA REALIZZAZIONE DI RUOTE DENTATE

• Main Authors: BORIO GIUSEPPE, BAIMA ANTONIO, DE CARLO LEONARDO, BERRUTO AURELIO, TOLOMEI ROBERTO, BOSCOLO GIANLUIGI
• Format: Patent
• Language: Italian
• Published: 11.06.1997
• Edition: 6
• Subjects: MACHINE TOOLS; MAKING GEARS OR TOOTHED RACKS; METAL-WORKING NOT OTHERWISE PROVIDED FOR; PERFORMING OPERATIONS; TRANSPORTING

A method for the manufacture of face or crown gears, in which a crown gear (2) adapted for meshing with a toothed pinion (3) is formed by means of a disc tool (32) having a cutting edge (38) exactly the same as the contour of the teeth of the pinion (3); the tool (32) being positioned so that its cutting edge (38) would be coincident, if the crown gear (2) were meshed with the pinion (3), with the contour of the teeth of the pinion (3) itself, and is pivoted about an axis (40) perpendicular to its own axis of rotation (35a); at the same time as the disc tool (32) is moved about the pivot axis (40), the crown gear (2) is moved translationally along a line of action (11) perpendicular to the axis of rotation (35a) of the disc tool (32) itself and is rotated about its own axis (14) perpendicular to the line of action (11); the ratio of the speeds of rotation of the crown gear (2) about its axis (14) and the speed of pivoting of the disc tool (32) about its axis (40) being variable in dependence on the position of the zone of contact of the disc (32) with the crown gear (2).