JPS59143542U - Upsetting equipment for pipe ends - Google Patents

Abstract

(57)【要約】本公報は電子出願前の出願データであるた
め要約のデータは記録されません。(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

【図面の簡単な説明】[Brief explanation of drawings]

第１図は管体端部の据込み加工装置を示す斜視図、第２
図は従来のマンドレルバ−の正面図および側面図、第３
図は従来の管体端部の据込み加工部の横断面図、第４図
は本考案の実施例のマンドレルバ−の正面図および側面
図、第５図は本考案に係る据込み加工装置による管体端
部の据込み加工部の横断面図、第６図は本考案装置と従
来装置によって据込み加工した管体端部のぼり高さの関
係を示すグラフである。Fig. 1 is a perspective view showing the upsetting device for the end of the tube;
The figure shows a front view and a side view of a conventional mandrel bar.
The figure is a cross-sectional view of a conventional upsetting section of the end of a tube body, Figure 4 is a front view and side view of a mandrel bar according to an embodiment of the present invention, and Figure 5 is an upsetting machine according to the present invention. FIG. 6, which is a cross-sectional view of the upsetting portion of the end of the tube, is a graph showing the relationship between the height of the end of the tube upturned by the device of the present invention and the conventional device.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 一対の半割ダイスとマンドレルバ−とを有してなり、複
数工程で管体端部の据込み加工を行う装置において、据
込み加工の第一工程のマンドレルバ−を、その横断面を
楕円形に形成すると共に該楕円形の短軸を前記半割ダイ
スの合せ面と一致させてダイスと組み合せたことを特徴
とする管体端部の据込み加工装置。In a device that has a pair of half-split dies and a mandrel bar and performs upsetting of the end of a tube in multiple steps, the mandrel bar in the first upsetting step is shaped so that its cross section is oval. A device for upsetting an end of a tubular body, characterized in that the short axis of the elliptical shape is aligned with the mating surface of the halved die, and the die is combined with the die.