Abstract:
A method for manufacturing a gear includes providing a rim gear, a hub and a core wherein the core is annular and has a core forging temperature below a hot hardness temperature of the rim gear and the hub. The rim gear and the hub are rotated about an axis relative to the core. During the relative rotation, the rim gear and the hub are in contact with the core to generate friction heat to raise an interface temperature of the core to the core forging temperature. The hub is driven into the core to upset a first portion of the core into an outer annular groove defined in a first faying surface of the hub. The rim gear is driven over the core to upset a second portion of the core into an inner annular groove defined in a second faying surface of the rim gear.
Abstract:
A system 10 and method of making a welded assembly 12. The system 10 includes a welding system 20 and an ultrasonic inspection device 22. The welding system 10 is configured to weld a first part 26 to a second part 28. The ultrasonic inspection device 20 transmits an ultrasonic beam to facilitate pre-weld inspection and/or post-weld inspection.
Abstract:
A system 10 and method of making a welded assembly 12. The system 10 includes a welding system 20 and an ultrasonic inspection device 22. The welding system 10 is configured to weld a first part 26 to a second part 28. The ultrasonic inspection device 20 transmits an ultrasonic beam to facilitate pre-weld inspection and/or post-weld inspection.
Abstract:
The invention relates to a process for producing a large transmission gearwheel (1; 31; 36) consisting of a plurality of individual components, said process comprising the successive steps of: providing the individual components, which include at least one hub (2; 32; 37), a disc wheel (3, 4; 18, 19; 22; 24; 27; 33, 34; 38, 39) and a toothed ring (5; 20; 21; 23; 26; 35; 40) produced from case-hardened steel; at least partially mechanically soft machining the individual components; joining the individual components using a beam welding process; case hardening the individual components which have been joined to one another, and hard machining at least the toothed ring (5; 20; 21; 23; 26; 35; 40). The invention furthermore relates to a large transmission gearwheel produced by such a process.
Abstract:
The invention relates to a control gear (1) for a synchronizing device of a change-speed gearbox, in particular of a motor vehicle, wherein a clutch body (2) is fixed to the control gear (1) by means of a weld (3) connecting the control gear (1) and the clutch body (2), and wherein the clutch body (2) extends over a radial height (H) from a radially inner end region (4) as far as a radially outer end region (5). In order to improve the quality of the toothing of the clutch body after welding and hardening, the invention provides that the weld (3) is arranged at a distance (a) from the radially inner end region (4).
Abstract:
Die Erfindung betrifft ein Verfahren sowie eine Anlage zur Herstellung und Weiterverarbeitung von Werkstücken (1) aus einer Materialplatte mittels eines Lasers. Als erster Verfahrensschritt wird die Materialpatte auf einem Träger (3) befestigt, wobei die Befestigungsstellen (11) derart gewählt werden, dass nach dem Ausschneiden ein die Werkstücke (1) umgebender Rahmen (7) entfernt werden kann. Die Werkstücke (1) verbleiben aber am Träger (3) befestigt und können dann weiterverarbeitet, zum Beispiel beschichtet werden. Nach der Weiterverarbeitung werden die Werkstücke (1) durch mechanische, thermische oder chemische Beanspruchung vom Träger (3) gelöst. Da die Werkstücke (1) nach dem Ausschneiden auf dem Träger (3) verbleiben, müssen sie für die Weiterverarbeitung nicht mehr einzeln neu positioniert werden. Eine Anlage, welche nach dem erfindungsgemässen Verfahren Werkstücke (1) herstellt, kann den Träger (3) als ganzes transportieren und positionieren. Dies bedeutet eine effektivere Handhabung der Werkstücke (1), was zu Zeitersparnis führt und somit zu einer Senkung der Herstellungskosten der Werkstücke (1) beiträgt.
Abstract:
A rack manufacturing apparatus (100) and a rack manufacturing method are provided. The rack manufacturing apparatus includes a first support portion (110) configured to support a hollow or solid first bar (12A) on which first rack teeth are formed, a second support portion (140) configured to support a hollow or solid second bar (12B) such that an axial center line of the second bar (C2) is aligned with an axial center line of the first bar (C1), a base (20) configured to cause the second support portion (140) to approach the first support portion (110), and a rotary driving portion (130) configured to rotate the second support portion (140) about the axial center line of the second support portion (C2) relative to the first support portion (110) so as to join an end portion of the first bar (12A) and an end portion of the second bar (12B) by a friction pressure welding.
Abstract:
Disclosed are a welded structure and a welding method which make it possible to improve welding strength and welding quality. A welded structure in which a first member and a second member are joined by means of welding, wherein the first member comprises a second-member joining part which is joined to the second member, and the second member comprises a first-member joining part which is joined to the first member. If the direction in which the first member and the second member are arranged is the first direction, and the direction intersecting the first direction is the second direction, the welded structure comprises a cavity part which is provided between the first-member joining part and the second-member joining part, and a welded part which is provided between the cavity part and both end parts in the second direction of the joining surface where the first-member joining part and the second-member joining part are joined.