Portable tool cleanly removes burrs that remain on tubing when it is cut. It restores the cut end to its original configuration, and carries away all chips and pieces. This tool is used in places of limited access where a larger tool could not be used

Headley, C. A.

Padilla, V. E.

Schoppman, R. A.

English

NASA Technical Reports Server

November 1965
	 Brief 65-10360 
NASA TECH	 L AL 
Mill 
NASA Tech Briefs are issued by the Technology Utilization Division to summarize specific 
technical innovations derived from the space program. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia, 22151. 
Portable Tool Removes Burrs from Pipe and Tubing 
Main Body
Expandable 
Air	 M 
Passage	 -' 
To Vacuum 
Source
Seating 
Knob 
The problem: When tubing or piping is cut, as in 
the repairing of a system, burrs frequently remain in 
the cut ends. In critical systems, such burrs would 
adversely affect performance by impeding or causing 
turbulence in system flow. It is necessary to remove 
the burrs before re-joining the tubing to assure 
smooth flow to system design. 
The solution: A portable tool that cleanly removes 
the burrs from the tubing end, restores the end to its 
original configuration, and carries away all chips 
and pieces. 
How it's done: The portable tool consists of three 
parts; a main body, a head, and a cutting member. A 
vacuum source attached to an air passage in the 
main body carries off chips, pieces, or dust resulting
from the cutting action. In operation, the head is 
slipped over the tubing to be treated and the end of 
the tubing is inserted into the main body until it seats 
in the chuck. The head is drawn up and clamps the 
chuck jaws to hold the tube externally. The cutting 
member is screwed into the main body until the ex-
pandable member enters the chuck-held tube. Rotating 
the seating knob forces the movable disk towards the 
fixed disk and causes the expandable member to 
move outward and engage the inside of the tube. With 
the tube firmly engaged externally by the chuck and 
internally by the expandable member, the operating 
knob is rotated to deburr and smooth the tube end by 
action of the cutting surfaces. Slots in the expandable 
member permit air through the tubing and this can be 
assisted, if desired, by applying pressure from the 
(continued overleaf) 
This document was prepared under the sponsorship of the National 
Aeronautics and Space Administration. Neither the United States 
Government nor any person acting on behalf of the United States
Government assumes any liability resulting from the use of the 
information contained in this document, or warrants that such use 
will be free from privately owned rights.
https://ntrs.nasa.gov/search.jsp?R=19650000358 2020-03-11T17:24:47+00:00Z
opposite end of the tubing to augment the cleaning 
action of the vacuum source. 
Note: This tool has been used to good advantage in 
places of limited access where a larger tool could not 
be used.
Patent status: Title to this invention has been 
waived under the provisions of the National Aero-
nautics and Space Act (42 U.S.C. 2457 (f)), to the 
McDonnell Aircraft corporation, Box 516, St. Louis, 
Missouri, 63166. 
Source: Charles A. Headley, Victor E. Padilla,

and Robert A. Schoppman of McDonnell

Aircraft corporation under contract to

Manned Spacecraft center

(MSC-237) 
Brief 65-10360	 Category 05


Portable tool removes burrs from pipe and tubing

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