Mathematical Analysis of the Process Forces Effect on Collet Chuck Holders
Open Access
- 27 February 2021
- journal article
- research article
- Published by MDPI AG in Mathematics
- Vol. 9 (5), 492
- https://doi.org/10.3390/math9050492
Abstract
Chuck holders are widely used for jobs with high precision. A chuck holder consists of a nut with a tapered surface and a thin-slotted clamping sleeve typically made of hardened steel and named a collet. Chuck holders are, essentially, wedge mechanisms. In this paper, we investigated the reactions and strains due to the forces during the chip removal process in the contact elements or jaws of the collet by means of mathematical analysis. Deflections in the jaws of the collet arise with a high influence from the precision of the workpieces. The cutting or process forces cause an axial force, a radial force, a torsional moment, and a bending moment on the chuck collet, and, consequently, displacements and inclinations of the clamping system are caused. Therefore, the proposed analytical models are based on elasticity and contact theories. The mathematical model for determining the deflections of the clamping system force was developed and implemented using MATLAB. The results showed that the variation in the clamping force during rotation in a collet chuck holder mainly depends on the stiffness of the collet chuck holder and the stiffness of the workpiece. The results indicated that the collet should be vulcanized to minimize the deformations that affect the final product. The deflections of a collet chuck holder due to process forces depend strongly on the clearances, wedge angle, and stiffness of the collet.Keywords
This publication has 21 references indexed in Scilit:
- Automatic Expanding Mandrel with Air Sensing Device: Design and AnalysisApplied Sciences, 2020
- Investigation on the influence of interference fit on the static and dynamic characteristics of spindle systemThe International Journal of Advanced Manufacturing Technology, 2018
- Characteristics of stiffness and contact stress distribution of a spindle–holder taper joint under clamping and centrifugal forcesInternational Journal of Machine Tools and Manufacture, 2014
- Dynamic modeling and parameters identification of a spindle–holder taper jointThe International Journal of Advanced Manufacturing Technology, 2012
- Analysis of the Clamping Mechanisms of Collet-Chucks Holders for TurningPublished by Springer Science and Business Media LLC ,2012
- Generation of functional tolerancing based on positioning featuresComputer-Aided Design, 2006
- Tooling Structure: Interface between Cutting Edge and Machine ToolCIRP Annals, 2000
- Chucking Performance of a Wedge-Type Power ChuckJournal of Engineering for Industry, 1994
- Effect of spindle speed on clamping force in turningJournal of the American Academy of Dermatology, 1993
- A model for predicting the initial static gripping force in lathe chucksThe International Journal of Advanced Manufacturing Technology, 1992