COMPARATIVE MODEL ANALYSIS OF TWO TYPES OF CLAMPING ELEMENTS IN DYNAMIC CONDITIONS

This paper studies the compliance of the fixture-workpiece system. Workpiece clamping case with two types of clamping elements is considered. The first type of clamping element is standard, with flat top, while the second one is specially designed, with round cutting insert. Analyzed was the case of workpiece clamping using small forces, whereby the deformations in the workpiece/clamping element interface are predominantly on the order of magnitude of roughness height. A comparative analysis of dynamic behaviour of both types of clamping elements is also presented. In comparison with its standard counterpart, the specially designed clamping element with round cutting insert has superior clamping performance regarding both tangential load capacity and compliance.Original Abstract: U radu se razmatra popustljivost sustava naprava-izradak. Razmatra se slucaj stezanja izratka s dva tipa elemenata za stezanje. Prvi tip elementa za stezanje je sa standardnim ravnim celom. Drugi tip elementa za stezanje je specijalne izvedbe s celom u obliku kruznog klina. Analiziran je slucaj stezanja malim vrijednostima sila stezanja pri cemu se deformacije u zonama kontakta izmedu elemenata za stezanje i izratka pretezno odvijaju u zonama visine neravnina. Takoder je prikazana komparativna analiza, predhodno spomenuta, dva nacina stezanja izradaka u uvjetima dinamickih opterecenja. Specijalno dizajnirani element za stezanje s celom oblika kruznog klina u odnosu na standardni element za stezanje s ravnim celom ima izrazito vecu steznu ucinkovitost po pitanju tangencijalne nosivosti i popustljivosti.