Dynamic analysis of a turning tool with a discrete model of the workpiece

Author:

Kotaiah K R1,Srinivas J2

Affiliation:

1. K L University, Vaddeswaram, India

2. Chaitanya Engineering College, Visakahapatnam, India

Abstract

The present paper proposes an analytical stability model of regenerative chatter in orthogonal turning operations. Tool geometry is initially developed as a solid model and analysed at different tool overhang conditions. In each case, stiffness, fundamental bending mode, and corresponding damping ratios of the tool are evaluated. With these data, the cutting tool can be represented with a lumped-parameter, single-degree-of-freedom vibration oscillator. Workpiece dynamics, on the other hand, is considered independently using a discrete finite element beam model. At some contact node of the workpiece, tool mass imposes a regenerative cutting force and second-order dynamic delay differential equations are formulated in terms of tool and modal parameters. The stability criterion is formulated from a characteristic equation. The effects of tool overhang and workpiece cross-section on stability using the proposed model are reported. Experimental analysis is carried out to show the effect of tool overhang on cutting dynamics.

Publisher

SAGE Publications

Subject

Industrial and Manufacturing Engineering,Mechanical Engineering

Cited by 13 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Dynamics of the regenerative turning chatter with little mass eccentricity;International Journal of Non-Linear Mechanics;2024-11

2. Chatter Stability Prediction for Deep-Cavity Turning of a Bent-Blade Cutter;Sensors;2024-01-18

3. Dynamic analysis and surface morphology prediction for deep cavity turning of bent-blade cutter;The International Journal of Advanced Manufacturing Technology;2023-11-07

4. Influence of Feed Velocity on Nonlinear Dynamics of Turning Process;International Journal of Precision Engineering and Manufacturing;2021-04-21

5. Effect of Cutting Tool Tip Position on Real Cutting Tool Deflection in Turning;Emerging Materials Research;2020-06-01

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