MANUFACTURING METHOD FOR VEHICLE SUSPENSION ARM, AND VEHICLE SUSPENSION ARM

[Problem] To provide a method for manufacturing a vehicle suspension arm that can satisfy quality (coaxiality and circularity) of a pair of through-holes and a vehicle suspension arm.[Solution] Stepwise bending in the method for manufacturing a vehicle suspension arm includes a first bending step an...

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Bibliographische Detailangaben
Hauptverfasser:	IGARASHI, Masahiro, TSUCHIDA, Tomo, HOSOI, Masahiro
Format:	Patent
Sprache:	eng ; fre ; ger
Schlagworte:	MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL PERFORMING OPERATIONS PUNCHING METAL TRANSPORTING VEHICLE SUSPENSION ARRANGEMENTS VEHICLES IN GENERAL WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS ORPROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL
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Beschreibung
Zusammenfassung:	[Problem] To provide a method for manufacturing a vehicle suspension arm that can satisfy quality (coaxiality and circularity) of a pair of through-holes and a vehicle suspension arm.[Solution] Stepwise bending in the method for manufacturing a vehicle suspension arm includes a first bending step and a second bending step. In the first bending step, preliminary bending is performed while holding a portion that composes a base portion 23 of a body portion 20 and a portion that composes first coupling portions 31 in a workpiece W by a punch 106 (first punch). In the second bending step, while holding of the portion that composes the first coupling portions by the first punch is released subsequently to the first bending step, bending is performed along a fold 72 given by the first bending step while holding the portion that composes the base portion 23 of the body portion 20 by a punch 108 (second punch).