Precision-forging parts manufacturingprocess

Abstract

The present invention relates to a precision-forging parts manufacturing process including the manufacture and development of a first forging tooling equipment ( 20, 30 ), the forging of the parts with said tooling equipment, whereas the parts have a determined excessive thickness, and their finishing treatment, The method is characterised in that it also includes the realisation of a digital model of the surface of the first tooling equipment, the forging of parts, the rehabilitation of the tooling equipment or the manufacture of new tooling equipment from the digital model, after forging a determined number of parts. In particular, the parts are subjected to a finishing treatment directly after forging, said treatment including mechanic polishing. The invention applies to the forging of blades for turbo machines.

1 . A precision-forging parts manufacturing process including 
 the manufacture and development of a first forging tooling equipment ( 20 ,  30 ),    the forging of the parts with said tooling equipment, whereas the parts have a determined excessive thickness, and    their finishing treatment,    characterised in that it also includes 
 the realisation of a digital model of the surface of the first tooling equipment ( 20 ,  30 ),  
 the forging of parts,  
 the rehabilitation of the tooling equipment or the manufacture of new tooling equipment ( 20 ,  30 ) from the digital model, after forging a determined number of parts.  
   
   
   
       2 . A method according to  claim 1  wherein the parts are subjected to a finishing treatment directly after forging, said treatment including mechanic polishing.  
   
   
       3 . A method according to  claim 1  wherein the finishing treatment also comprises chemical machining.  
   
   
       4 . A method according to  claim 1 , wherein the forged parts are controlled to determine at what time new tooling equipment ( 20 ,  30 ) should be rehabilitated or manufactured.  
   
   
       5 . A method according to  claim 1  wherein the adjustment of the tooling equipment manufactured ( 20 ,  30 ) includes 
 a. digital acquisition of the position of a determined number of points on the surface of the tooling equipment manufactured,    b. the comparison of the position of the points with the digital model, and    c. possible correction of the surface of the tooling equipment.    
   
   
       6 . A method according to  claim 5 , wherein the points of the surface are acquired by contact free optical measurement.  
   
   
       7 . A method according to  claim 5 , wherein the points are acquired digitally using mechanical means.  
   
   
       8 . A method according to  claim 1 , followed by elimination of said excessive thickness of the parts by abrasion.  
   
   
       9 . A method according to the previous claim wherein abrasion is performed using a belt mounted on a wheel which is pressed against the surface of excessive thickness.  
   
   
       10 . A method according to the previous claim wherein the quantity of matter to be eliminated is determined by selecting the machine parameters; pressure of the wheel against the surface, forward speed of the belt and displacement velocity of the wheel.