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Title: Double diameter boring tool

Abstract

A boring tool and a method of operation are provided for boring two concentric holes of precision diameters and depths in a single operation. The boring tool includes an elongated tool body, a shank for attachment to a standard adjustable boring head which is used on a manual or numerical control milling machine and first and second diametrically opposed cutting flutes formed for cutting in opposite directions. The diameter of the elongated tool body is substantially equal to the distance from the first flute tip to the axis of rotation plus the distance from the second flute tip to the axis of rotation. The axis of rotation of the tool is spaced from the tool centerline a distance substantially equal to one-half the distance from the second flute tip to the axis of rotation minus one-half the distance from the first flute tip to the axis of rotation. The method includes the step of inserting the boring tool into the boring head, adjusting the distance between the tool centerline and the tool axis of rotation as described above and boring the two concentric holes.

Inventors:
;
Issue Date:
Research Org.:
Allied Corp., Kansas City, MO (USA). Bendix Kansas City Div.
OSTI Identifier:
6604977
Application Number:
ON: DE87007297
Assignee:
Dept. of Energy
DOE Contract Number:  
AC04-76DP00613
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; DRILL BITS; DESIGN; ACCURACY; OPERATION; DRILLING EQUIPMENT; EQUIPMENT; 420200* - Engineering- Facilities, Equipment, & Techniques

Citation Formats

Ashbaugh, F A, and Murry, K R. Double diameter boring tool. United States: N. p., 1986. Web.
Ashbaugh, F A, & Murry, K R. Double diameter boring tool. United States.
Ashbaugh, F A, and Murry, K R. Mon . "Double diameter boring tool". United States.
@article{osti_6604977,
title = {Double diameter boring tool},
author = {Ashbaugh, F A and Murry, K R},
abstractNote = {A boring tool and a method of operation are provided for boring two concentric holes of precision diameters and depths in a single operation. The boring tool includes an elongated tool body, a shank for attachment to a standard adjustable boring head which is used on a manual or numerical control milling machine and first and second diametrically opposed cutting flutes formed for cutting in opposite directions. The diameter of the elongated tool body is substantially equal to the distance from the first flute tip to the axis of rotation plus the distance from the second flute tip to the axis of rotation. The axis of rotation of the tool is spaced from the tool centerline a distance substantially equal to one-half the distance from the second flute tip to the axis of rotation minus one-half the distance from the first flute tip to the axis of rotation. The method includes the step of inserting the boring tool into the boring head, adjusting the distance between the tool centerline and the tool axis of rotation as described above and boring the two concentric holes.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1986},
month = {2}
}