Abstract:
A method for forming a convex tilting zone (23) at a main body surface (11) of a transverse element for application in a push belt for a continuously variable transmission comprises the steps of providing a die (30) having a stepped surface and placing the die (30) against the main body surface (11) under pressure. However, the die (30) is pressed against the main body surface (11) just outside of an area where the tilting zone (23) needs to be formed. By applying the die (30), a recessed area (27) is arranged in the main body surface (11), wherein retraction of the material of the transverse element takes place along an upper edge (28) of this area (27). A retraction area which is obtained in this manner adjacent to the edge (28) as mentioned is suitable to function as tilting zone (23).
Abstract:
Disclosed therein are an apparatus and method for manufacturing a sprocket segment, which can manufacture the sprocket segment through a simplified process including hot precision forging, through hardening and painting, thereby reducing manufacturing period and cost and securing competitive power. The sprocket segment manufacturing method includes: a primary hot forging process of putting a heated billet in a booster die 10 mounted on a forging press to perform a distribution of volume; a secondary hot forging process of putting the hot forged material M in a blocker die 11 to form a rib face 4; a tertiary hot forging process of putting the secondarily hot forged material M in a finisher die 12 to keep right angles and planes of a toothed face 6 and the rib face 4; and a process of putting the tertiarily hot forged material M in a product guide die 22 of a trimming-piercing-coining die 13 to eliminate a flash and form bolt holes 7 simultaneously.
Abstract:
In a process for manufacturing metal track links which can be assembled to form a crawler, a base part (10) and a sole part (20) of the track link (1) are shaped by a casting or forging tool, a specific sole part (20) from a plurality of sole parts (20) being associated with a base part (10). The tool used for this purpose consists of at least one part which shapes the base part (10) of the track link and one part which shapes the sole part (20) of the track link. The track link (1) so obtained has receiving lugs (2) on one side and an equal number of eyelet recesses (3) on the other side, lateral guides (7) on the bottom of the track link and at least one engaging recess (6).
Abstract:
Procédé de forgeage d'un segment de roue dentée pour le sous-châssis d'un véhicule du type à chenille. Le procédé de forgeage produit des segments de roues dentées qui répondent à des tolérances très strictes sans qu'un usinage ou un finissage supplémentaires ne soient nécessaires. Le procédé consiste à chauffer une billette métallique (5') dans un four électrique (60), à façonner grossièrement la billette (5'), à forger la billette (5') dans un moule (62) pour former un segment de roue dentée (5) possédant une taille et une forme sensiblement égales à la forme finie désirée du segment (51). Le segment de roue dentée forgé (5) est ébavuré et placé dans un moule de frappe (8) dans lequel au moins deux surfaces non parallèles (A, B, C) sont formées selon des dimensions finies désirées. L'invention comprend également un dispositif (8) permettant de forger un segment de roue dentée selon des dimensions finies désirées. Le dispositif (8) comprend un organe de moule supérieur (80), un organe de moule inférieur (8'), et un organe de moule mobile transversalement (82).