JPS58157515U

JPS58157515U - Center hole processing device

Info

Publication number: JPS58157515U
Application number: JP5649282U
Authority: JP
Inventors: 河合　治一; 原　恵一
Original assignee: 三菱電機株式会社
Priority date: 1982-04-19
Filing date: 1982-04-19
Publication date: 1983-10-20

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

[Brief explanation of the drawing]

第１図は従来のセンタ穴加工装置を示す正面図、第２図
はその振れ止め治具の右側面図、第３図はこの考案の一
実施例によるセンタ穴加工装置を示す正面図、第４図は
その支え治具の右側面図、第５図はセンタドリルの正面
図、第６図はその左側面図である。図において、１は被削材、２はセンタドリル、３は、ド
リルチャック、７はベッド、１５は支え治具、１６は駆
動センタ、１８は支えローラ、２０は取付台である。な
お、各図中同一符号は同一または相当部分を示すものと
する。第３図第４図Fig. 1 is a front view showing a conventional center hole processing device, Fig. 2 is a right side view of the steady rest jig, and Fig. 3 is a front view showing a center hole processing device according to an embodiment of the invention. 4 is a right side view of the support jig, FIG. 5 is a front view of the center drill, and FIG. 6 is a left side view thereof. In the figure, 1 is a workpiece, 2 is a center drill, 3 is a drill chuck, 7 is a bed, 15 is a support jig, 16 is a drive center, 18 is a support roller, and 20 is a mounting base. Note that the same reference numerals in each figure indicate the same or corresponding parts. Figure 3 Figure 4

Claims

[Scope of utility model registration request]

(1) In a device for drilling a center hole in one end of a workpiece, two pairs of rollers that support the workpiece at the bottom near both ends;
A drive center that has a recess that holds one end of the workpiece supported by the roller and rotates the workpiece, and a center hole that is located at the other end of the workpiece opposite to this drive center. It is equipped with a center drill for machining, and with the center of the drive center and center drill as a reference, the roller on the drive center side is slightly lowered, the roller on the center drill side is slightly raised, and the cutting edge of the center drill and horizontal line 30°
A center hole machining device characterized by setting the center hole at ~60°.

(2) The center hole machining device according to claim 1, wherein the workpiece has a cylindrical shape.

(3) Utility model registration claim 1 or 2, characterized in that the drive center has a dish-shaped or picture-shaped recess.
The center hole machining device described in section.