Conception of Hollow Axles Forming by Skew Rolling with Moving Mandrel
			
	
 
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				Mechanical Faculty, Lublin University of Technology, 36 Nadbystrzycka Str., 20-618 Lublin, Poland
				 
			 
										
				
				
		
		 
			
			
		
		
		
		
		
			
			 
			Publication date: 2021-09-01
			 
		 			
		 
	
					
		
	 
		
 
 
Adv. Sci. Technol. Res. J. 2021; 15(3):146-154
		
 
 
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ABSTRACT
The article presents a conception of manufacturing a hollow axle using three skewed  rolls moving at the same rotating speed, axially moving chuck and a moving mandrel. The outer shape of the axle is obtained as a result of combining the radial feed of the rolls with axial feed of the chuck. The hole in the axle, however, is obtained as a result of the mandrel acting on the workpiece while moving along with it. In order to assess the correctness of the presented concept of forming, a numerical simulation was performed in Simufact.Forming commercial software. The results of the simulation confirmed that the applied method allows one to manufacture large-size hollow axles. Moreover, information on force parameters of the forming process, which can be used for designing an industrial rolling mill was obtained.