Two-piece, radius-form block permits accurate forming and removing of parts with more than a 180 degree bend. Tube bender can shape flexible metal tubing in applications dealing with plumbing, heating, and pressure transmission lines

Lange, D. R.

Seiple, C. W.

English

NASA Technical Reports Server

Ma 1970	 Brief 70-10038 
NASA TECH BRIEF H .	 I..::. 	 •...-
NASA Tech Briefs announce new technology derived from the U.S. space program. They are issued to encourage commercial 
application. Tech Briefs are available on a subscription basis from the Clearinghouse for Federal Scientific and Technical 
Information, Springfield, Virginia 22151. Requests for individual copies or questions relating to the Tech Brief program may 
be directed to the Technology Utilization Division, NASA, Code UT, Washington, D.C. 20546. 
Split Radius-Form Blocks for Tube Benders 
The problem: 
Present solid-type, radius-form blocks are limited 
to maximum bends that permit the tube ends (or end 
connections) to clear the inside diameter of the form 
block for removal. The amount of tube flexure cannot 
be extended beyond 180°. 
The solution: 
A new two-piece, radius-form block, shown in the 
figure, permits, in a single operation, accurate forming 
and removing of parts with more than a 180° bend. 
How it's done: 
The radius-form block is made in two parts which 
are separated along the plane of the bend to permit 
removal of the part. The fabrication of the short 
U-turn assembly is an example of the capability of 
this unit. With the new form block, it is also possible
to install the nuts and flare both ends of the tube prior 
to bending. 
Notes: 
1. This tube bender can be used to shape flexible 
metal tubing in applications dealing with plumbing, 
heating, and pressure transmission lines. 
2. This Tech Brief is complete in itself. No additional 
documentation is available. 
Patent status: 
No patent action is contemplated by NASA. 
Source: C. W. Seiple and D. R. Lange of 
North American Rockwell Corporation 
under contract to 
Manned Spacecraft Center 
(MSC-15773) 
Categor 0 
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=19700000037 2020-03-17T00:04:25+00:00Z


Split radius-form blocks for tube benders

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