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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 edges formed for cutting in opposite directions. The diameter of the elongated tool body is substantially equal to the distance from the first cutting edge tip to the axis of rotation plus the distance from the second cutting edge 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 cutting edge tip to the axis of rotation minus one-half the distance from the first cutting edge 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:
 [1];  [2]
  1. Belton, MO
  2. Odessa, MO
Issue Date:
Research Org.:
Kansas City Plant (KCP), Kansas City, MO (United States)
OSTI Identifier:
866803
Patent Number(s):
4793745
Application Number:
06/827,704
Assignee:
United States of America as represented by United States (Washington, DC)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y10 - TECHNICAL SUBJECTS COVERED BY FORMER USPC Y10T - TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
B - PERFORMING OPERATIONS B23 - MACHINE TOOLS B23B - TURNING
DOE Contract Number:  
AC04-76DP00613
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
double; diameter; boring; tool; method; operation; provided; concentric; holes; precision; diameters; depths; single; elongated; shank; attachment; standard; adjustable; head; manual; numerical; control; milling; machine; diametrically; opposed; cutting; edges; formed; opposite; directions; substantially; equal; distance; edge; tip; axis; rotation; plus; spaced; centerline; one-half; minus; step; inserting; adjusting; described; diametrically opposed; opposite direction; cutting edge; opposite directions; substantially equal; boring tool; boring head; single operation; numerical control; cutting edges; milling machine; /408/

Citation Formats

Ashbaugh, Fred N, and Murry, Kenneth R. Double diameter boring tool. United States: N. p., 1988. Web.
Ashbaugh, Fred N, & Murry, Kenneth R. Double diameter boring tool. United States.
Ashbaugh, Fred N, and Murry, Kenneth R. Tue . "Double diameter boring tool". United States. https://www.osti.gov/servlets/purl/866803.
@article{osti_866803,
title = {Double diameter boring tool},
author = {Ashbaugh, Fred N and Murry, Kenneth 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 edges formed for cutting in opposite directions. The diameter of the elongated tool body is substantially equal to the distance from the first cutting edge tip to the axis of rotation plus the distance from the second cutting edge 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 cutting edge tip to the axis of rotation minus one-half the distance from the first cutting edge 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 = {1988},
month = {12}
}

Patent:

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