JPH0319627U

JPH0319627U -

Info

Publication number: JPH0319627U
Application number: JP7751589U
Authority: JP
Priority date: 1989-06-30
Filing date: 1989-06-30
Publication date: 1991-02-26

Description

[Brief explanation of drawings]

図はいずれもこの考案の１実施例を示すもので
、第１図は凹面やすりの斜視図、第２図は第１図
の断線に沿つて切断した要部の拡大断面図、第３
図はこの考案の他の実施例を示す凹面やすりの斜
視図、第４図は第３図の断線における断面図、第
５図はこの考案のさらに他の実施例を示す斜視図
、第６図は第５図の断線における断面図、第７図
はやすり本体を弯曲させて溝状凹面にした実施例
を示す斜視図、第８図はこの考案の凹面やすりで
面取りした丸棒材の一例を示す斜視図である。１…やすり本体、３…やすり面、２…溝状凹面
。 The figures all show one embodiment of this invention; Fig. 1 is a perspective view of a concave file, Fig. 2 is an enlarged sectional view of the main part taken along the line in Fig. 1, and Fig. 3
Figure 4 is a perspective view of a concave file showing another embodiment of this invention, Figure 4 is a sectional view taken along the line in Figure 3, Figure 5 is a perspective view showing still another embodiment of this invention, and Figure 6. 5 is a cross-sectional view taken along the line in FIG. 5, FIG. 7 is a perspective view showing an embodiment in which the file body is curved to form a groove-like concave surface, and FIG. 8 is an example of a round bar material chamfered with the concave file of this invention. FIG. 1...File body, 3...File surface, 2...Groove concave surface.

Claims

[Scope of Claim for Utility Model Registration] 1. A file made in a plate shape from a hard material, including a file body 1 made in a plate shape from carbon steel or hard ceramic material, and an arc concave shape formed on the surface of this file body 1. A concave file comprising a grooved concave surface 2 such as a V-groove shape, and a file surface 3 cut into the grooved concave surface 2. 2. The concave file according to claim 1, wherein the grooved concave surface 2 having the file surface 3 is formed by curving the file body 1 itself.