SIMULATION AND OPTIMIZATION OF WORKING CONDITIONS DURING PUSH BENDING PROCESS

Push bending process is one of the methods used for bending tubular parts. It is a suitable technique to make considerably small bending radii. The method is performed using a rigid die to guide and form the tube into the required shape while being pushed by a punch. A pressure media is used within the tube to prevent wrinkling and buckling. The hyper-elastic (rubber) materials are commonly used as the pressure media. This paper presents the pressure distribution within the tube, during push bending process. Effect of rubber properties on the tube quality is also studied. Finally optimum working conditions of process is predicted by the finite element method and is compared with previously published experimental observations.

کلیدواژه ها:

Tube bending ، wrinkling ، rubber ، pressure distribution