Chatter Stability of Metal Cutting and Grinding

Altintaş, Yusuf; Weck, Manfred

doi:10.1016/s0007-8506(07)60032-8

Cited by 700 publications

(283 citation statements)

References 69 publications

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“…On the one hand, predictive or offline methods [15][16][17] forecast the chatter-free conditions. They are applied before cutting but need experimental information from the system dynamics and cutting parameters.…”

Section: Models In Machining Processesmentioning

confidence: 99%

A Reliable Turning Process by the Early Use of a Deep Simulation Model at Several Manufacturing Stages

Urbikaín¹,

Lacalle²,

Alonso³

et al. 2016

Preprint

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Abstract:The next future using machine tools will be dominated by highly flexible and interconnected systems, in order to achieve the required productivity, accuracy and reliability. Nowadays, distortion and vibration problems are easily solved for the most common cases by sing models based on equations describing the physical laws dominating the machining process; however additional efforts are needed to overcome the gap between scientific research and the real manufacturing problems. In fact, there is an increasing interest in developing simulation packages based on "deep knowledge and models" that aid the machine designer, the production engineer, or machinists to get the best of their machines. This article proposes a systematic methodology to reduce problems in machining by means of a simulation utility, which recognizes, collects and uses the main variables of the system/process as input data, and generates objective results that help in the proper decision-making. Direct benefits by such an application are found in a) the fixture/clamping optimal design, b) the machine tool configuration, c) the definition of chatter free optimum cutting conditions and the right programming of cutting tool path at the Computer Aided Manufacturing (CAM) stage. The information and knowledge-based approach showed successful results in several local manufacturing companies.

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Section: Models In Machining Processesmentioning

confidence: 99%

A Reliable Turning Process by the Early Use of a Deep Simulation Model at Several Manufacturing Stages

Urbikaín¹,

Lacalle²,

Alonso³

et al. 2016

Preprint

View full text Add to dashboard Cite

show abstract

“…forced vibrations and selfexcited vibrations [7][8][9][10][11]. Forced vibrations originate from rotating machine tool elements, mainly unbalance of a rotating grinding wheel.…”

Section: Introductionmentioning

confidence: 99%

A dynamic model of cylindrical plunge grinding process for chatter phenomena investigation

2018

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Abstract. In the paper, chatter vibrations in the cylindrical plunge grinding process are investigated. An improved model of the grinding process was developed which is able to simulate self-excited vibrations due to a regenerative effect on the workpiece and the grinding wheel surface. The model includes a finiteelement model of the workpiece, two degrees of freedom model of the grinding wheel headstock and a model of wheel-workpiece geometrical interferences. The model allows to studying the influence of different factors, i.e. workpiece and machine parameters as well as grinding conditions on the stability limit and a chatter vibration growth rate. At the end, simulation results are shown and compared with exemplified real grinding results.

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“…The results indicated that the chipping of the cutting edge can be effectively prevented and a good surface finish obtained by both continuous and intermittent cutting modes when cutting hardened steels. Altintas and Weck [5] collected and organized various studies to describe flutter principles, various processing modeling and simulation, and suppression tactics.…”

Section: Introductionmentioning

confidence: 99%

Application of passive damping fixture to the improvement of CNC drilling

2018

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Abstract. High precision and high efficiency are the essential competition conditions for multiaxis machine. However, machine vibration problems are always plagued by equipment manufacturers. This study focuses on solving or eliminating the multi-angle drilling vibration of processing machines. By the design and experiment combining CNC multi-axis machine tools with vibration tables, the surface roughness in the multi-angle drilling holes is discussed for the reference of the industry or the academia. The results indicated that adding proper vibration factors could effectively improve the bore surface roughness and smoothness. Roughness Ra with the vibration interval time 0.5 sec, could improve the surface roughness 48.95% of the processing hole, comparing to it without vibration. Besides, the resonance phenomenon disappears at the feed to generate good effect. It is expected to reduce various vibration problems faced by processing with machine tools in order to enhance the international competitiveness of processing tool manufacturers.

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Chatter Stability of Metal Cutting and Grinding

Cited by 700 publications

References 69 publications

A Reliable Turning Process by the Early Use of a Deep Simulation Model at Several Manufacturing Stages

A Reliable Turning Process by the Early Use of a Deep Simulation Model at Several Manufacturing Stages

A dynamic model of cylindrical plunge grinding process for chatter phenomena investigation

Application of passive damping fixture to the improvement of CNC drilling

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