Modeling and realization of work-space analysis of a piezoelectric actuator 2-DOF vibration-assisted swing cutting system

Abstract

This paper presents some results achieved in the ultra-precision manufacturing, microelectronics engineering, as well as bioengineering applications of vibration-assisted swing cutting (VASC) technology, and describes the resolved and unresolved challenges presented by VASC manufacturing. In particular, it outlines the residual-height between adjacent trajectories in EVC process technology cannot be eliminated, which has the effect of alleviating this problem. Based on matrix-based compliance modeling, the stroke of the PZTs and the allowable stress of the material on the work-space were analyzed. Theoretical modeling was validated by finite element analysis (FEA). The results showed that the max-stroke of the PZTs and the Von Mises stress could reach up to 16.67 μm and 196.6 MPa in the theoretical, respectively. The max-stroke of the PZTs and the Von Mises stress could reach up to 19.50 μm and 158.9 MPa in the finite element analysis, respectively. Cutting experiment was carried out on the basis of VASC design and modeling, which further verified the large work-space and the VASC technology can suppress residual-height between adjacent trajectories effectively. Thus, the superior performances and easily achievable high surface machining accuracy well facilitate practical applications of the VASC system in micro-/ nano machining.

A novel stick-slip piezoelectric actuator is developed based on a parallelogram flexible drive mechanism to minimize shear force

“…This technology has * Author to whom any correspondence should be addressed. been widely used in various technical fields, including precision manufacturing [1][2][3], aerospace [4][5][6] and bioengineering [7][8][9]. Precision positioning techniques based on piezoelectric materials have garnered significant attention due to their exceptional properties, including fast response time [10] and high resolution [11].…”

High Precision Piezoelectric Micro Droplet Control and Generation System

“…It has the advantages of low sample consumption, fast analysis speed, and high sensitivity. Microfluidics can achieve accurate and highdensity medical testing [9][10], drug screening [11], cell culture [12][13], and other work. This article mainly proposes a control and driving method for the generation of piezoelectric micro droplets, which is based on the control of the driving signal of the piezoelectric transducer to achieve the generation of micro fluid droplets.…”

An analytical cutting force model of quasi-intermittent vibration assisted swing cutting based on predictive machining theory

“…Based on elliptic vibration cutting (EVC), the Quasiintermittent vibration assisted swing cutting (QVASC) method is proposed to improve the difficult-to-cut materials' machinability, which can inherit the advantage of EVC and eliminate its residual height. [1][2][3] The application of vibration along the cutting direction and the radial direction in EVC 4,5 leads to a smaller cutting force, longer tool life, and higher surface quality. 6 However, the traditional EVC technology is not suitable for processing overly complex and curved surfaces.…”

“…Subsequently, based on QVASC design and modeling, he conducted cutting experiments to confirm that the QVASC technique can suppress residual errors between adjacent objects very simply. 2 Research on other aspects are slightly less, an improved differential evolution algorithm (IDE) was proposed by Wang et al 3 to identify and optimize Hammerstein-Wiener model parameters in the QVASC system. He used the IDE algorithm to convert the identification problem of the model into an optimization problem in the parameter space, and he obtained the optimal solution of the model parameters in the parameter space.…”