Study of the stiffness of modular fixtures using the finite element method

10th International Symposium Machine and Industrial Design in Mechanical Engineering

工业技术;机械制造

Cioat, V.G.^1 ; Alexa, V.^1 ; Raiu, S.A.^1

Politehnica University of Timioara, Department of Engineering and Management, Revoluiei Street, no. 5, Hunedoara

331128, Romania^1

关键词: Applied forces;    Cutting process;    Friction coefficients;    Machining Process;    Modular fixtures;    Normal stiffness;    Overall stiffness;    Tangential stiffness;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/393/1/012036/pdf
DOI  :  10.1088/1757-899X/393/1/012036

学科分类：工业工程学

来源: IOP

【 摘 要 】

Modular fixtures are some of the most used fixtures for orientation and fixing of the workpieces in the cutting process. It is also know that the precision of the machining process is influenced by the overall stiffness of the modular fixtures, which, in turn, depends on the stiffness of each module, connecting elements, contacts etc. This paper comprises a study of the stiffness of modular fixtures based on the multifunctional holes system. We shall determine the influence of the applied force, of the pretension force, of the friction coefficient at sliding between surfaces in contact and of the number of joints on the normal stiffness and tangential stiffness for an orientation subassembly consisting of modules in a set based on the multifunctional holes system.