JPS6272023U

JPS6272023U -

Info

Publication number: JPS6272023U
Application number: JP16496385U
Authority: JP
Priority date: 1985-10-25
Filing date: 1985-10-25
Publication date: 1987-05-08
Also published as: JPH0357384Y2

Description

[Brief explanation of the drawing]

第１図はこの考案を具体化した一実施例を示す
正面図、第２図はその側面図、第３図は同じく先
端から見た図、第４図は第１図のＡ―Ａ線端面図
、第５図は刃体部先端の部分拡大側面図、第６，
７図は作用を説明するための要部概略断面図、第
８，９図は作用を説明するために先端から見た状
態を示す要部拡大図、第１０図は斜視図である。シヤンク…１、刃体部…２、第１のリーマ溝…
４、押圧部…６、押圧面…７、主切れ刃…８、第
２リーマ溝…１０、押圧部…１２、押圧面…１３
、主切れ刃…１５、軸心から第１のリーマ溝の主
切れ刃迄の半径…Ｒ１、軸心から第２のリーマ溝
の主切れ刃迄の半径…Ｒ２。 Fig. 1 is a front view showing an embodiment embodying this invention, Fig. 2 is a side view thereof, Fig. 3 is a view similarly seen from the tip, and Fig. 4 is an end view taken along the line A--A in Fig. 1. Figure 5 is a partially enlarged side view of the tip of the blade body;
FIG. 7 is a schematic sectional view of the main part to explain the action, FIGS. 8 and 9 are enlarged views of the main part as seen from the tip to explain the action, and FIG. 10 is a perspective view. Shank…1, Blade body…2, First reamer groove…
4, Pressing part...6, Pressing surface...7, Main cutting edge...8, Second reamer groove...10, Pressing part...12, Pressing surface...13
, Main cutting edge...15, Radius from the axis to the main cutting edge of the first reamer groove...R1, Radius from the axis to the main cutting edge of the second reamer groove...R2.

Claims

[Scope of utility model registration request]

At least one pair of first reamer grooves 4 and a second reamer groove 10 are provided along the axis of the blade body 3 connected to the shank 1, and the first reamer groove 4
The diameter of the blade body 3 extending rearward in the rotational direction is equal to or less than the diameter of the blade body extending forward in the rotational direction, and the rake face 5 provided at the rearward rotational direction of the first reamer groove 4 and the blade body 3 are The intersection line is the pressing part 6, the rear outer peripheral surface thereof is the pressing surface 7, and the tip of the pressing surface 7 is cut out from the rake surface 5 toward the rear of the outer periphery, and a main cutting edge is formed on the intersection line with the rake surface 5. 8,
A line of intersection between the second reamer groove 10 and a rake face 11 provided at the rear in the rotational direction is defined as a pressing part 12, the rear outer peripheral surface thereof is defined as a pressing surface 13, and the tip of the pressing surface 13 is separated from the rake face 11. A main cutting edge 15 having a larger diameter than the main cutting edge 8 of the first reamer groove 4 from the rake surface 11 to the tip of the pressing surface 13 is diagonally cut toward the rear in the rotational direction and from the base end to the tip end. A reamer characterized by being provided with.