INFLUENCE OF THE PRESSURE DIE GEOMETRY ON THE BENT TUBE OVALITY

Abstract

The paper deal with analysis and optimization of the pressure bar geometry in the case of the tube bending. The bending process is realized on Wafios RBV 60 ST CNC bending machine using rotary draw bending system. The processed semi-finished product is a tube, which is made of 24MnB5 steel. Currently, after tube bending by an angle of 120°, an unacceptable ovality occurs on its body. Therefore, the article presents the optimization of the pressure bar geometry, which helps to prevent the occurrence of the mentioned defect. Due to the least possible intervention in the bending process, only the change in the pressure bar geometry is tested. For this reason, a numerical simulation in ANSYS software is performed. Before the actual optimization, an accuracy of the simulation is verified by comparing the real initial state with simulation results.

Recommended articles

MECHANICAL PROPERTIES OF ALUMINIUM ALLOYS AT HIGH STRAIN RATE

MIROSLAV JOPEK, MILAN FOREJT, MARTIN HARANT
Keywords: Split Hopkinson Bar test | aluminium alloy | EN AW 6082 | high strain rate | dynamic load.

AZURE KINECT BODY TRACKING UNDER REVIEW FOR THE SPECIFIC CASE OF UPPER LIMB EXERCISES

EUGENIO IVORRA, MARIO ORTEGA, MARIANO ALCANIZ
Keywords: Human pose estimation | Microsoft Azure Kinect | Upper limb exercises | OptiTrack system

THE MACHINABILITY OF INC 718 BY CERAMIC INSERTS

MATUS VARHANIK, MIROSLAV PISKA
Keywords: machinability | hard-to-machine materials | Inconel® 718 | turning with SIALON ceramic | cutting forces

ANALYSIS OF THE INFLUENCE OF TOOL ELECTRODE WEAR ON SURFACE QUALITY IN DIE-SINKING EDM TECHNOLOGY

LUBOSLAV STRAKA, PATRIK KUCHTA
Keywords: Die-sinking Electrical Discharge Machining (Die-sinking EDM) | Main Technological Parameters (MTP) | Percentage Electrode Wear (PEW) | tool steel | Shaped Tool Electrode (STE).