Deformation of products cut on AWJ x-y tables and its suppression

International Conference on Mechanical Engineering and Applied Composite Materials

机械制造;材料科学

Hlavá, L.M.^1 ; Hlaváová, I.M.^1 ; Planár, Š.^2 ; Krenický, T.^3 ; Geryk, V.^1

VŠB - Technical University of Ostrava, Department of Physics, 17.listopadu 15/2172, Ostrava - Poruba

70833, Czech Republic^1

Watting S.r.o., Budovatel'ská 38, Preov

080 01, Slovakia^2

Technical University of Koice, Faculty of Manufacturing Technologies, Štúrova 31, Preov

080 01, Slovakia^3

关键词: Abrasive water jet;    Cutting heads;    Declination angles;    Good correlations;    Measurement uncertainty;    Shape deformation;    Special devices;    Theoretical modeling;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/307/1/012015/pdf
DOI  :  10.1088/1757-899X/307/1/012015

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

The aim of this study is namely investigation of the abrasive water jet (AWJ) cutting of column pieces on commercial x-y cutting machines with AWJ. The shape deformation in curved and/or stepped parts of cutting trajectories caused by both the trailback (declination angle) and the taper (inclination of cut walls) can be calculated from submitted analytical model. Some of the results were compared with data measured on samples cut on two types of commercial tables. The main motivation of this investigation is determination of the percentage difference between predicted and real distortion of cutting product, i.e. accuracy of prepared analytical model. Subsequently, the possibility of reduction of the distortion can be studied through implementation of the theoretical model into the control systems of the cutting machines with the system for cutting head tilting. Despite some limitations of the used AWJ machines the comparison of calculated dimensions with the real ones shows very good correlation of model and experimental data lying within the range of measurement uncertainty. Results on special device demonstrated that the shape deformation in curved parts of the cutting trajectory can be substantially reduced through tilting of the cutting head.