JPH0314035U

JPH0314035U -

Info

Publication number: JPH0314035U
Application number: JP7352589U
Authority: JP
Priority date: 1989-06-26
Filing date: 1989-06-26
Publication date: 1991-02-13
Also published as: JPH0347707Y2

Description

[Brief explanation of drawings]

第１図は本考案によるテーパねじ転造装置の要
部を示す縦断面図、第２図は第１図の−線か
ら見た側面図、第３図は転造ローラを詳細に示す
部分縦断面図、第４図ａは第１図の−線に沿
う横断面図であつて、裏当てローラ要素退避位置
で示す図、第４図ｂは第４図ａと同様な横断面図
であつて、裏当てローラ要素を裏当て位置で示す
図である。１０……円筒状ヘツド本体、１２……シヤフト
、１４……転造ローラ、１６……裏当て芯部、１
８……スリーブ部材、２２……裏当てローラ要素
、２４……カム部材、２８……円板状ブロツク部
材、３４……ピン部材、３６……セツトレバー。 Fig. 1 is a vertical sectional view showing the main parts of the tapered thread rolling device according to the present invention, Fig. 2 is a side view taken from the - line in Fig. 1, and Fig. 3 is a partial longitudinal sectional view showing the rolling roller in detail. FIG. 4a is a cross-sectional view taken along the line - in FIG. 1, showing the backing roller element in the retracted position, and FIG. 4b is a cross-sectional view similar to FIG. 4a. FIG. 6 shows the backing roller element in the backing position. 10... Cylindrical head body, 12... Shaft, 14... Rolling roller, 16... Backing core, 1
8... Sleeve member, 22... Backing roller element, 24... Cam member, 28... Disc-shaped block member, 34... Pin member, 36... Set lever.

Claims

[Claims for Utility Model Registration] A cylindrical head body, and a plurality of rolling rollers rotatably held within the cylindrical head body at equal intervals on the circumference around its central axis, Each rolling roller is formed with a rolling thread and a drawing thread, and the tapered thread is formed in such a manner that the longitudinal axis of the end of the tube to be rolled coincides with the central axis of the cylindrical head body. The tube end is fed into the center of the arrangement of a plurality of rolling rollers to be bitten by the drawn thread portion of the rolling rollers, and the rolling rollers are relatively rolled around the circumference of the tube end to form a tapered thread. In a tapered thread rolling device in which either the cylindrical head body or the pipe end is rotationally driven to perform rolling, the tapered thread is inserted into the pipe end to be rolled through the cylindrical head body. A backing core shaped like this is provided at the center of the arrangement of the rolling rollers, and the backing core has an outer diameter somewhat smaller than the inner diameter of the tube end and has a central axis line with the cylindrical head body. a sleeve member concentrically secured to the sleeve member, the sleeve member having at least two equally spaced openings formed along its circumferential surface, and the backing core further disposed within the opening of the sleeve member. a cam member rotatably disposed within the sleeve member so as to cam engage with the backing roller elements, and the rotational action of the cam member causes the backing roller A tapered thread rolling device characterized in that the element can be displaced between a backing position where the element is brought into contact with the inner wall surface of the pipe end during tapered thread rolling and a retracted position where the element is retracted from this backing position. .