One-piece elbow hydraulic fitting designed for electric arc stud welding and process for producing the same

Abstract

A process of forming a hydraulic port weld stud that includes providing a billet of material; forging an initial forging from the single billet of material including a stud portion having a longitudinal axis and a port portion extending along an axis transverse to the longitudinal axis of the stud portion; and machining the initial forging to form a finished part wherein the port portion and stud portion are integrally formed without the need for a joining operation.

1 . A process of forming a hydraulic port weld stud comprising:
 providing a single billet of material;   forging an initial forging from the single billet of material including a stud portion having a longitudinal axis and a port portion extending along an axis transverse to the longitudinal axis of the stud portion;   machining the initial forging to form a finished part wherein the port portion and stud portion are integrally formed without the need for a joining operation.   
     
     
         2 . The process of  claim 1  wherein the machining step includes forming a first bore along the longitudinal axis less than an entire length of the stud portion. 
     
     
         3 . The process of  claim 2  wherein the machining step includes forming the first bore through a top surface and extending along the longitudinal axis towards a base less than a distance to the base and terminating at a pilot portion. 
     
     
         4 . The process of  claim 2  wherein the machining step includes forming a hole in the base and press fitting a flux material into the hole. 
     
     
         5 . The process of  claim 2  wherein the machining step includes forming a counter bore in the first bore. 
     
     
         6 . The process of  claim 2  wherein the machining step includes forming threads in the first bore. 
     
     
         7 . The process of  claim 2  wherein the machining step includes forming a chamfer in the first bore. 
     
     
         8 . The process of  claim 1  wherein the machining step includes forming in the port portion a second bore extending along the transverse axis and intersecting the first bore of the stud portion. 
     
     
         9 . The process of  claim 1  wherein the port portion includes either a male or female attachment port. 
     
     
         10 . The process of  claim 9  wherein the male attachment port includes a generally cylindrical body and including forming threads on an outer surface of the generally cylindrical body. 
     
     
         11 . The process of  claim 9  wherein the male attachment port includes a generally cylindrical body and including forming a flared end on the generally cylindrical body. 
     
     
         12 . The process of  claim 9  wherein the female attachment port includes a generally cylindrical body and including forming threads on an inner surface of the generally cylindrical body. 
     
     
         13 . A process of forming a hydraulic port weld stud comprising:
 providing a single billet of material;   shaping the single billet of material providing a stud portion having a longitudinal axis and a port portion extending along an axis transverse to the longitudinal axis of the stud portion;   machining the shaped billet to form a finished part wherein the port portion and stud portion are integrally formed without the need for a joining operation.