JPS59120512U - Throwaway tip - 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、従来のドリルを示す正面図、第２図はその端
面図、第３図は、従来のチップを示す正面図、第４図は
そのＡ方向視図、第５図は同じくＢ方向視図、第６図は
側面図、第７図はこの考案のチップの一例を示す正面図
、第８図は同上のＣ方向視図、第９図は同じくＤ方向視
図、第１０図は側面図、第１１図は他の実施例の側面図
、第１２図は本考案のチップを採用したドリルの正面図
、第１３図はその端面図である。 １０・・−・・・スローアウェイチップ、１１・・・・
・・上面、−１２・・・・・・下面、１３．１４・・・
−・・対向二側面、１５゜１″６・・・・・・他の対向
二側面、１９・・・・・・溝、２０゜２０’、２１．２
１’・・・・・・交線。 九々・Fig. 1 is a front view showing a conventional drill, Fig. 2 is an end view thereof, Fig. 3 is a front view showing a conventional tip, Fig. 4 is a view from direction A, and Fig. 5 is also a view from B. 6 is a side view, FIG. 7 is a front view showing an example of the chip of this invention, FIG. 8 is a view as seen in direction C, FIG. 9 is a view as seen in direction D, and FIG. 11 is a side view of another embodiment, FIG. 12 is a front view of a drill employing the tip of the present invention, and FIG. 13 is an end view thereof. 10... Throwaway tip, 11...
...Top surface, -12...Bottom surface, 13.14...
-...Two opposing sides, 15゜1''6...Other two opposing sides, 19...Groove, 20゜20', 21.2
1'... Intersection line. Kuzu・

Claims (2)

【実用新案登録請求の範囲】[Scope of utility model registration request] （１）互いに平行な上面及び下面、上面と９０°以下の
角度で交わる対向二側面及び下面と９０゜以下の角度で
交わる他の対向二側面とから成り、その少なくとも一方
の鋭角コーナを任意の寸法切除したはＳ゛菱形原形とす
るスローアウェイチップ゛こおいて、上記対向二側面と
他の対向二側面との鈍角コーナ部における交線を、当該
コーナ部における上面及び下面の面取りと交線中心部へ
の溝の配設により除去し、互いに独立した各々の対向二
側面と上面及び下面の交線部を゛　　　ドリルの中心刃
として使用することを特徴とするスローアウェイチップ
。(1) Consisting of a top surface and a bottom surface that are parallel to each other, two opposing side surfaces that intersect with the top surface at an angle of 90 degrees or less, and two other opposing side surfaces that intersect with the bottom surface at an angle of 90 degrees or less, with at least one of the acute angle corners The size of the indexable tip is cut into an S diamond shape, and the line of intersection of the two opposing sides and the other two opposing sides at the obtuse corner is the line of intersection with the chamfering of the upper and lower surfaces at the corner. 1. A throw-away tip, which is removed by providing a groove in the center, and the intersecting portions of two mutually independent opposing sides and the top and bottom surfaces are used as the center cutting edge of a drill. （２）上記溝近傍の切刃（交線）を、円弧もしくはそれ
に近い形状としたことを特徴とする実用新案登録請求の
範囲第１項記載のスローアウェイチップ。(2) The indexable insert according to claim 1, wherein the cutting edge (intersection line) near the groove is formed into a circular arc or a shape close to it.