Title:
仕上られた鍛造スプロケットセグメントと製造方法及び装置
Document Type and Number:
Japanese Patent JP3524922
Kind Code:
B2
Abstract:
A finished toothed sprocket segment is forged in a cavity of a first die by a second die having a protrusion which extends into the cavity. The sprocket segment has first and second spaced datum pads formed on a first curved surface of a rim of the sprocket which locates the sprocket segment on a hub. The first and second datum pads and first and second apertures are located relative to each other so that distortion of the sprocket segment during final heat treatment does not effect the relative position. As a result the apertures in the hub and sprocket segment are easily aligned during attachment of the sprocket segment to the hub. Since the first die requires no draft angles, the critical surfaces on the sprocket segment are forged to final finish, flatness and tolerance.
Inventors:
ヴィック エイチ デイル
ウッドバーン ビリー ジー
マグワイア ロイ エル
ウッドバーン ビリー ジー
マグワイア ロイ エル
Application Number:
JP50903994A
Publication Date:
May 10, 2004
Filing Date:
August 23, 1993
Export Citation:
Assignee:
キャタピラー インコーポレイテッド
International Classes:
B21K1/30; B62D55/12; B62D55/135; (IPC1-7): B21K1/30; B62D55/12
Attorney, Agent or Firm:
中村 稔 （外６名）