Bucking Bar System

Abstract

A Bucking Bar System (BBS) for the assembly of aerospace components by setting solid core rivet fasteners and more specifically a BBS having a sender body or elongated neutral axis to operatively move the system center of mass or centroid near the tool handle, away from the rivet being set. Urging the centroid toward the handle improves technician ergonomics and offers other rivet fastener installation benefits.

What is claimed is: 
     
         1 . A bucking bar system is used to set a solid core rivet fastener, said rivet having a manufactured head a shank a shank face and a shank neutral axis where upon fastening, the shank end of said rivet plasticly deforms into a button head to join a plurality of work pieces to each other, said bucking bar system comprising:
 an elongated shaft, said shaft having a first end and a second end,   an anvil face, said anvil face located at said first end of said shaft,   a handle, said anvil located at said second end of said shaft,   wherein said bucking bar system forms a slender body and said bucking bar system is operative to plastically deform said shank into side button head.   
     
     
         2 . The system of  claim 1 , wherein the form factor of said bucking bar system forms
 a slender body, said slender body having a slenderness ratio greater than 6.   
     
     
         3 . The system of  claim 1 , wherein the form factor of said bucking bar system forms
 a slender body, said slender is operative to position the mass centroid of said bucking bar system away from said anvil face and toward said handle,   wherein said position of said centroid of said bucking bar system is configured to improve ergonomics.   
     
     
         4 . The system of  claim 1 , wherein the form factor of said bucking bar system forms
 a slender body, said slender is operative to aid colinear alignment of said bucking bar system with said rivet shank.   
     
     
         5 . The system of  claim 1 , wherein the form factor of said bucking bar system forms
 a slender body, said slender is operative to aid colinear alignment of said bucking bar system with said rivet shank, and   wherein a large angular pivot rotation of said handle over said rivet is required to substantially misalign said anvil face with said rivet shank face.   
     
     
         6 . The system of  claim 1 , wherein the form factor of said bucking bar system substantially coaxially aligns the mass of said bucking bar with said rivet shank, and said coaxial alignment is operative to reduce vibration of said bucking bar system. 
     
     
         7 . The system of  claim 1 , wherein the form factor of said bucking bar system is configured to at least one of,
 reduce technician fatigue,   reduce injury,   improve working ergonomics,   improve rivet set quality,   damp vibration, and   avoid rivet set errors.   
     
     
         8 . The system of  claim 1 , where said elongated shaft is comprised of
 a tubular shaft, wherein said tubular shaft is operative to at least one of,
 damp vibration, said vibration resulting from rivet gun impact blows, and to position mass centroid proximal to handle. 
   
     
     
         9 . The system of  claim 1 , where said bucking bar system is further comprised of
 a PRIOR ART subsystem comprised of at least one of,
 an automated rivet set tool subsystem, said subsystem having a plunger, said plunger operative to provide a shroud, said shroud operative to prevent said anvil face from slipping off said rivet shank end and said automated rivet set tool subsystem operative to automate the rivet setting process, 
 a back set tool subsystem, said subsystem having a plunger, said plunger operative to provide a shroud, said shroud operative to prevent said anvil face from slipping off said rivet shank end, 
   a shaft/handle subsystem, said subsystem comprised of,
 a coupler mate component, 
 a shaft component, 
 a handle transition component, and 
 a handle component, 
   a coupler subsystem, said subsystem comprised of,
 a coupler component, 
   
       wherein said shaft/handle subsystem coupler mate, tubular shaft, handle transition, and handle components are colinearly joined together, and 
       wherein said coupler subsystem is operative to couple any said prior art subsystem to said shaft/handle subsystem, and 
       wherein upon said coupling, said subsystems are joined together to make said bucking bar system a ridged body. 
     
     
         10 . A bucking bar system is used fasten a solid core rivet having a manufactured head a shank and a shank end where upon fastening the shank end plasticly deforms into a button head when joining a plurality of work pieces to each other, said bucking bar system further comprising:
 an elongated shaft, said shaft having,
 a first end, said first end having,
 an anvil face, 
 
 a second end, said second end having,
 a handle, 
 
   
       wherein said bucking bar system forms,
 a slender body, said slender body has a slenderness ratio of nominal length to nominal diameter greater than six. 
 
     
     
         11 . The bucking bar system of  claim 10  wherein said slender body shape is operative to
 locate the bucking bar system's mass centroid proximal to said handle and away from said anvil face, to 
 coaxially align the said rivet shank with said elongated shaft, and to 
 require a large angular motion of said handle with respect to the neutral axis of said rivet shank, when positioning said bucking bar system over said shank end, to cause coplanar misalignment of said rivet shank end and said anvil face surfaces. 
 
     
     
         12 . A coupler subsystem to form, a bucking bar system by joining a PRIOR ART subsystem to a shaft/handle subsystem wherein said coupler subsystem coaxially joins the ends of two shafts to each other, wherein PRIOR ART subsystem is comprised of:
 a set tool, said set tool having,
 a set tool shoulder, 
 a first distal end, said first distal end operative to be the end of a shaft to be said coaxially joined, 
 an anvil face, said anvil face located at a second distal end of said set tool and wherein said shaft/handle subsystem is further comprised of, 
   a shaft, said shaft has a first end and a second end,   a handle, said handle is affixed to said first end of said shaft,   a pocket, said pocket located proximal to said second end of said shaft,   a set of external threads, said external threads located proximal to said second end of said coupler subsystem further comprised of,
 a coupler, said coupler having, 
 an internal cavity, said internal cavity having,
 a group of internal threads, and 
 a coupler shoulder, 
 
   
       upon assembly, said internal and said external threads are engaged, said engagement mates said urges said set tool shoulder and said coupler shoulder to each other and urges said first end of said set tool into said pocket until it mates at bottom of said pocket forming a rigid body between the PRIOR ART subsystem, the coupler subsystem, and the shaft/handle subsystem. 
     
     
         13 . The coupler system of  claim 12 , wherein upon assembly said PRIOR ART subsystem shaft, said shaft/handle subsystem shaft, are coaxially coupled to each other. 
     
     
         14 . The coupler system of  claim 12 , wherein upon assembly said first shaft, said second shaft, and said coupler form a rigid body with each other.