摘要:
A method for manufacturing a gear which effectively prevent a crack from occurring inside a tooth part when rolling processing is performed on a teeth part of a gear raw material is achieved. A method according to one embodiment for manufacturing a gear 15 by performing rolling processing on a tooth part 2a of a sintered gear raw material 2. The method includes, when the rolling processing is performed on the tooth part 2a of the gear raw material 2, pressing the gear raw material 2 toward a center of rotation of the gear raw material 2 by a rolling machine 4 and, when at least the rolling processing is performed on the tooth part 2a of the gear raw material 2 toward a center of a thickness thereof by a pressing machine 5, pressing a region A where an internal density of the tooth part 2a of the gear raw material 2 decreases. The invention also relates to an apparatus for manufacturing a gear.
摘要:
A reciprocating die roll forming machine for forming a pattern such as a thread form on the outer surface of a cylindrical blank includes at least one set of reciprocating dies operating upon the blank which rotates in place. The machine includes a slide and bearing combination to support the dies belt driven by a servo-motor controlled by a central processing unit. Mechanism is provided to deliver and position a blank for engagement by the dies. In one form, the machine includes multiple die sets to produce multiple parts during one die reciprocation cycle. In another form, the machine employs separate drive mechanisms to independently drive each die of a set.
摘要:
Verfahren und Vorrichtung zur Herstellung eines innen- und/oder außenverzahnten topfförmigen Blechteils (9) mit zur Topfmittelachse verlaufenden Zähnen, wobei ein unverzahntes topfförmiges Blechteil (9) in eine Matrize (5,5a) eingelegt und sodann mittels einer Relativbewegung zwischen dem Blechteil (9) und zugeordneten Profilrollen (22) ein Profil auf das topfförmige Blechteil durch die am Blechteil (9) ansetzenden Profilrollen (22) aufgewalzt wird und so eine abwechselnde Innen- und Außenverzahnung am Blechteil (9) angebracht wird, wobei die Profilrollen (22) radial von innen nach außen gerichtet das Blechteil (9) verformen, indem sich die Profilrollen (22) am Innenumfang des Blechteils (9) entlang abwälzen.