JPS6412703U - - Google Patents

Description

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

第１図は本考案の実施例に係る切削用工具のノ
ーズ部分を示す平面図、第２図および第３図は第
１図において切削用工具を矢印Ａ方向および矢印
Ｂ方向からそれぞれ見た矢視図、第４図は第１図
のＣ―Ｃ線における断面図、第５図は刃先ノーズ
部のノーズ半径と切削抵抗との関係を示すテスト
データ、第６図は刃先ノーズ部のノーズ半径と加
工数との関係を示すテストデータである。 １……ノーズ、２……刃先ノーズ部、３……刃
元ノーズ部、４……切刃、Ｒ_１，Ｒ_２……ノーズ
半径、ｌ……円弧長さ、ｈ……円弧深さ。 FIG. 1 is a plan view showing the nose portion of a cutting tool according to an embodiment of the present invention, and FIGS. 2 and 3 are arrows when the cutting tool is viewed from the arrow A direction and arrow B direction in FIG. Fig. 4 is a cross-sectional view taken along line C-C in Fig. 1, Fig. 5 is test data showing the relationship between the nose radius of the cutting edge nose and cutting resistance, and Fig. 6 is the nose radius of the cutting edge nose. This is test data showing the relationship between and the number of machining operations. 1...Nose, 2...Blade tip nose portion, 3...Blade base nose portion, 4...Cutting edge, _R1 , _R2 ...Nose radius, l...Circular arc length, h...Circular arc depth.

Claims (1)

【実用新案登録請求の範囲】[Scope of utility model registration request] 頂部近傍のノーズを切刃とする切削用工具であ
つて、上記ノーズは、先端側を構成する刃先ノー
ズ部と、該刃先ノーズ部に連続して基端側を構成
する刃元ノーズ部とからなり、上記刃先ノーズ部
はノーズ半径が０．１〜０．１５mmに設定され、
かつ上記刃元ノーズ部は、ノーズ半径が４〜６mm
に、円弧長さが１．８〜２．５mmに、円弧深さが
０．０６５〜０．２mmにそれぞれ設定されている
ことを特徴とする切削用工具。 A cutting tool having a nose near the top as a cutting edge, wherein the nose consists of a cutting edge nose portion forming a tip side and a cutting edge nose portion forming a base end side continuous to the cutting edge nose portion. The nose radius of the above cutting edge nose part is set to 0.1 to 0.15 mm,
And the nose radius of the above blade nose part is 4 to 6 mm.
A cutting tool characterized in that the arc length is set to 1.8 to 2.5 mm, and the arc depth is set to 0.065 to 0.2 mm.