JPS6239916U

JPS6239916U -

Info

Publication number: JPS6239916U
Application number: JP13039785U
Authority: JP
Priority date: 1985-08-27
Filing date: 1985-08-27
Publication date: 1987-03-10

Description

[Brief explanation of the drawing]

第１図は本考案ステツプ切削式スローアウエイ
エンドミルの一実施例を示す正面図。第２図はそ
の側面図。第３図は本考案エンドミルに用いられ
る変形四角ポジチツプ正面図。第４図はその側面
図。第５図は本考案によるスローアウエイエンド
ミルの他の実施例を示す正面図。第６図はその側
面図。第７図は従来の三角ポジチツプを用いたス
ローアウエイエンドミル要部の正面図。第８図は
その側面図。第９図は従来丸ポジチツプを用いた
スローアウエイエンドミルの要部正面図。第１０
図はその側面図。第１１図は従来の四角ポジチツ
プを用いたスローアウエイエンドミルの要部正面
図。第１２図はその側面図。第１３図は本考案者
等が先に特願昭５９―３６０７０号で提案したス
ローアウエイチツプの要部正面図。第１４図はそ
の側面図。第１５図は同じく四角ポジチツプの斜
視図。第１６図は本考案者等が先に特願昭５９―
３６０７０号で提案したエンドミルの外周主切刃
に用いる八角ネガチツプの斜視図。第１７図は同
じく底刃用スローアウエイチツプの斜視図。第１
８図は本考案によるスローアウエイエンドミル（
Ｒ削り用）の底刃に用いる丸ポジチツプの斜視図
。第１９図はテーブル送り量と機械動力との関係
を表わす図。１：カツターボデイ、４：主切刃、５：リブ、
６：コーナ部、１３：丸ポジチツプ、θ：カツト
角、１６：四角ポジチツプ、α：傾斜角。 FIG. 1 is a front view showing one embodiment of the step cutting type indexable end mill of the present invention. Figure 2 is its side view. Figure 3 is a front view of a modified square positive chip used in the end mill of the present invention. Figure 4 is its side view. FIG. 5 is a front view showing another embodiment of the indexable end mill according to the present invention. Figure 6 is its side view. Figure 7 is a front view of the main parts of a conventional indexable end mill using a triangular positive tip. Figure 8 is a side view. Figure 9 is a front view of the main parts of a conventional indexable end mill using a round positive tip. 10th
The figure is a side view. FIG. 11 is a front view of the main parts of a conventional indexable end mill using a square positive tip. FIG. 12 is a side view thereof. Figure 13 is a front view of the main parts of the throw-away chip that the inventors of the present invention proposed in Japanese Patent Application No. 59-36070. FIG. 14 is a side view thereof. FIG. 15 is a perspective view of the same square positive chip. Figure 16 is a patent application filed by the inventors in 1982.
A perspective view of an octagonal negative chip used for the outer main cutting edge of the end mill proposed in No. 36070. FIG. 17 is a perspective view of the throw-away tip for the bottom blade. 1st
Figure 8 shows the indexable end mill (
FIG. FIG. 19 is a diagram showing the relationship between table feed amount and mechanical power. 1: Cutter body, 4: Main cutting edge, 5: Rib,
6: corner part, 13: round positive chip, θ: cut angle, 16: square positive chip, α: tilt angle.

Claims

[Scope of Claim for Utility Model Registration] (1) In a throw-away end mill in which the outer main cutting edge is shifted stepwise in the axial direction, the throw-away tip constituting the main cutting edge has a main cutting edge length of 4.0 to A step-cutting indexable end mill characterized in that it has a modified rectangular positive chip with a diameter of 7.0 mm, and a round or polygonal chip is provided at the tip of the end mill. (2) The step-cutting method according to claim 1 of the utility model registration claim, characterized in that the throw-away tip constituting the main cutting edge is a positive tip with a concave portion connected to the upper cutting edge of the deformed rectangular shape. Throwaway end mill. (3) A step-cutting indexable end mill according to claim 1 or 2, characterized in that the outer main cutting edge has an inclination angle and the cutting edges are arranged in a saw-like shape. (4) The step-cutting indexable end mill according to any one of claims 1 to 3, which is characterized in that the main cutting edges are arranged in a spiral pattern. (5) The step-cutting indexable end mill according to any one of claims 1 to 4, which is characterized in that a rib is provided between the indexable tips constituting the main cutting edge.