JPS6127616U

JPS6127616U - Counterbore tool for countersunk screws

Info

Publication number: JPS6127616U
Application number: JP11068884U
Authority: JP
Inventors: 忠雄水本
Original assignee: 川崎重工業株式会社
Priority date: 1984-07-21
Filing date: 1984-07-21
Publication date: 1986-02-19

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

[Brief explanation of drawings]

第１図は本案にかさる座ぐり工具の正面図、第２図はそ
の背面図、第３図は第２図の矢印Ｐ方向に見た端面図、
第４図はその斜視図、第５図は従来の座ぐり工具の正面
図、第６図は第５図の矢印Ｑ方向に見た端面図、第７図
はその斜視図、第８図は従来の座ぐり工具による加工作
業の説明図である。１，１１・・・・・・座ぐり工具、２，９・・・・・・
座ぐり用刃、３・・・・・・孔、４・・・・・・ねじ孔
、５・・・・・・ねじ、６・・・・・・穴、７・・・・
・・座、８・・・・・・かえり、１０・・・・・・うす
刃、１２′・・・・・・上端、１３・・・・・・先端。Fig. 1 is a front view of the counterbore tool according to the present invention, Fig. 2 is a rear view thereof, Fig. 3 is an end view seen in the direction of arrow P in Fig. 2,
Fig. 4 is a perspective view of the same, Fig. 5 is a front view of a conventional spot boring tool, Fig. 6 is an end view as seen in the direction of arrow Q in Fig. 5, Fig. 7 is a perspective view thereof, and Fig. 8 is a front view of a conventional spot boring tool. FIG. 2 is an explanatory diagram of machining work using a conventional counterbore tool. 1, 11... Counterbore tool, 2, 9...
Spot facing blade, 3...hole, 4...screw hole, 5...screw, 6...hole, 7...
...Seat, 8...Barb, 10...Thin blade, 12'...Top end, 13...Tip.

Claims

[Scope of utility model registration request]

(1) A seat that has a hole in its center for inserting a drill, and that is fixed to the drill and rotates with the drill and is pushed in to countersink the entrance end of the hole at the same time as the hole is being drilled with the drill. A spot boring tool for a countersunk screw, characterized in that a spot boring blade and a thin cutting edge for burr cutting are provided on one end surface of the spot boring tool.

(2) Scope of Utility Model Registration Claim (1) in which the height of the upper end of one counterboring blade on the circumferential surface of the counterboring tool is slightly higher than the tip height of the counterboring blade. Countersink tool for countersunk screws as described.