The aim of this paper is to obtain an optimal method for balancing a self-centering chuck of a CNC machine. To do this, two methods, known in literature as influence coefficient method and modified holobalancing method, are adapted to this specific application. A common error in the balancing process could be to consider the 3-jaw chuck as an isotropic system, due to its geometry. This paper reveals an anisotropic behavior of the system that cannot be neglected, as it has a direct influence on the estimation of the corrective masses. Therefore, the study has a twofold objective. First, select sensitive measuring points that take into account the anisotropic behavior. Secondly, evaluate which method best estimates the correction masses. In order to select a procedure, each method is verified by experiments on a chuck in different unbalance conditions. The experimental results show that the evaluation of the mass unbalance depends on the orientation of the sensors. In fact, the choice of a suitable measuring point allows to adopt a simpler balancing method and to reduce errors in the estimation of the corrective mass.
Methods for balancing a self-centering chuck of a CNC machine
Dipace giuseppe.
Primo
Methodology
;Mucchi E.Penultimo
Supervision
;
2023
Abstract
The aim of this paper is to obtain an optimal method for balancing a self-centering chuck of a CNC machine. To do this, two methods, known in literature as influence coefficient method and modified holobalancing method, are adapted to this specific application. A common error in the balancing process could be to consider the 3-jaw chuck as an isotropic system, due to its geometry. This paper reveals an anisotropic behavior of the system that cannot be neglected, as it has a direct influence on the estimation of the corrective masses. Therefore, the study has a twofold objective. First, select sensitive measuring points that take into account the anisotropic behavior. Secondly, evaluate which method best estimates the correction masses. In order to select a procedure, each method is verified by experiments on a chuck in different unbalance conditions. The experimental results show that the evaluation of the mass unbalance depends on the orientation of the sensors. In fact, the choice of a suitable measuring point allows to adopt a simpler balancing method and to reduce errors in the estimation of the corrective mass.I documenti in SFERA sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.