Tool that uses conventional milling and cutting techniques separates sleeve type tubing unions and tubes without using heat. A selection of holders, associated bits, and cutting wheels permits preparation of varied diameter unions

Millett, A. U.

English

NASA Technical Reports Server

Bit 
June 1966	 Brief 66-10253 
NASA TECH BRIEF 
NASA Tech Briefs are issued to summarize specific innovations derived from the U. S. space 
program and to encourage their commercial application. Copies are available to the public from 
the Clearinghouse for Federal Scientific and Technical Information, Springfield, Virginia 22151. 
Tool Separates Sleeve-Type Unions Without Heat 
Tubing 
Union
The problem: 
To design a tool to separate a sleeve type tubing 
union and tube without the use of heat, with minimum 
tube deformation while maintaining optimum cleanli-
ness. 
The solution: 
A tool holder that uses conventional milling and 
cutting techniques.
How it's done: 
The union separating tool consists of a slotted 
holder that receives the union sleeved tubing. A tool 
bit is inserted in the holder and the holder is rotated 
by a spanner engaging a slotted nut on one end. The 
tool bit is advanced after each rotation of the tool by 
means of a setscrew adjustment so that it machines a 
channel in the union. Design of the tool limits 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=19660000252 2020-03-11T17:39:00+00:00Z
depth of cut to the union wall only. When the union 	 2. Inquiries concerning this innovation may be di-
wall has been milled through, the tool bit is replaced 	 rected to: 
by a cutting wheel and the holder is again rotated, the 	 Technology Utilization Officer 
setscrew being used to advance the cutting wheel at 	 Manned Spacecraft Center 
each rotation. This cuts through the tubing wall leav- 	 Houston, Texas 77058 
ing smooth, even ends, free of burrs and deformation.	 Reference: B66-10253 
Notes:.	 Patent status: 
I. A selection of holders, associated bits, and cutting 	 No patent action is contemplated by NASA. 
wheels permits separation of varied diameter	 Source: A. U. Millett 
unions,	 of North American Aviation, Inc. 
under contract to 
Manned Spacecraft Center 
(MSC-497) 
Brief 66-10253	 Category 05


Tool separates sleeve-type unions without heat

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