System prevents wire saw slippage by providing sufficient friction to turn idler spools even when turns of wire on spools do not provide sufficient friction. Low cost system is easily applied to existing equipment

Gallo, E. A.

English

NASA Technical Reports Server

December 1971	 Brief 71-10522 
NASA TECH BRIEF 
Manned Spacecraft Center
	
-1:V 
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 National Technical Information 
Service, Springfield, Virginia 22151. Requests for individual copies or questions relating to the. Tech Brief program may 
be directed to the Technology Utilization Office, NASA, Code KT, Washington, D.C. 20546. 
Anti-Slipping System Improves Wire Saw Performance 
Motor
•	
;/'4I(r(lI_ 
Drive Pulley 
S
Wire Adjustable 
Idler Pulley	 Drive 
Spool
Idler Spool 
This system prevents slippage in a wire saw by 
providing sufficient friction to turn the idler spools even 
when the turns of wire on the spools do not provide 
sufficient friction. 
The system, which is readily incorporated on ex-
isting machines, entails the addition of a variable position 
idler pulley to the drive belt train. The position of this 
pulley controls the tension on the drive belt, which in 
turn, determines the friction force between the drive 
belt idler pulleys and their supporting drums. The rota-
tional force, imparted by the pulleys to the drums, is 
transmitted to the wire idler spools. Thus, the position 
of the additional idler pulley controls the rotational
force of the idler spools and permits simple adjustments 
to prevent wire slippage. 
The improvement in performance offered by this 
system, combined with its low cost and applicability to 
existing equipment, should render it of interest to in-
dustries employing wire saws. 
Note:
Requests for further information may be directed 
to:
Technology Utilization Officer 
Manned Spacecraft Center, Code JM7 
Houston, Texas 77058 
Reference: TSP71-10522 
-	 (continued overleaf) 
This documetct was prepared under the sponsorship of the National
	
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Aeronautics and Space Administration. Neither the United States	 information contained in this document, or warrants that such use 
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https://ntrs.nasa.gov/search.jsp?R=19710000515 2020-03-17T02:27:05+00:00Z
Patent status: 
No patent action is contemplated by NASA. 
Source: E. A. Gallo 
Service Technology Corporation 
under contract to
Manned Spacecraft Center 
(MSC-13508)
. 
Brief 71-10522	 Category: 07


Anti-slipping system improves wire saw performance

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