JPH045313U

JPH045313U -

Info

Publication number: JPH045313U
Application number: JP4589090U
Authority: JP
Priority date: 1990-04-27
Filing date: 1990-04-27
Publication date: 1992-01-17

Description

[Brief explanation of the drawing]

第１図は、本考案ターンブローチの概念を示す
説明図、第２図は、セグメントの取付け状態を示
す一部平面図、第３図は、第２図中の−線に
沿つて得られる断面図、第４図は、変形例を示す
一部平面図、第５図は、別の考案を示す一部平面
図、第６図は、第５図中の−線に沿つて得ら
れる断面図、第７図は、従来のセグメント取付け
状態を示す断面図である。１……セグメント、２……本体、３……押え駒
、４……締付けボルト、５……長穴、６……取付
け穴、６ａ……座ぐり穴、７……係止部分、８…
…スプリング、９……ねじ穴、１０……オープン
スロツト、１１……切欠段部。 Fig. 1 is an explanatory diagram showing the concept of the turn broach of the present invention, Fig. 2 is a partial plan view showing how the segments are attached, and Fig. 3 is a cross section taken along the - line in Fig. 2. 4 is a partial plan view showing a modified example, FIG. 5 is a partial plan view showing another idea, and FIG. 6 is a sectional view taken along the - line in FIG. , FIG. 7 is a sectional view showing a conventional segment attachment state. 1... Segment, 2... Main body, 3... Presser piece, 4... Tightening bolt, 5... Long hole, 6... Mounting hole, 6a... Counterbore hole, 7... Locking part, 8...
... Spring, 9 ... Screw hole, 10 ... Open slot, 11 ... Notch step.

Claims

[Claims for Utility Model Registration] (1) A turn broach in which a plurality of segments 1 are screwed to the outer periphery of a main body 2 of the broach tool with a tightening bolt 4 via a presser piece 3. The segment 1 is provided with an elongated hole 5 or an open slot 10 for attachment and detachment, and the presser piece 3 has a mounting hole 6 with a counterbore portion 6a and a locking portion 7 for the segment 1 connected to each other. It has a long strip shape and is positioned so as to be pushed up by the spring 8 with respect to the long hole 5 or open slot 10 of the segment 1, and is The locking portion 7 secures the attachment/detachment position with respect to the segment 1, and the tightening bolt 4 is inserted through the attachment hole 6 provided with the spring 8 so that its head is located in the counterbore hole 6a of the presser piece 3. A turn broach characterized by being fitted and screwed toward a screw hole 9 of a main body 2 of the tool. (2) In a turn broach in which adjacent segments 1 are simultaneously clamped by tightening bolts 4 via presser pieces 3 on the outer circumference of the main body 2 of the broach tool, on both sides of the segments 1: , a notch step 11 for attachment and detachment is provided, and the presser foot 3 is provided with a mounting hole 6 having a counterbore portion 6a, and locking portions 7 for the notch step 11 in the direction of both ends. The springs 8 are positioned between adjacent segments 1 so that the presser foot 3 is pushed up, and the short side portions can pass through by 90° conversion. The tightening bolt 4 is inserted into the threaded hole 9 of the main body 2 of the tool so that its head is located in the counterbore hole 6a of the presser piece 3, and the spring 8 is wound around it.
A turn broach characterized by being screwed toward.