Utilization of Thermal Energy to Compensate Quasi-static Deformations in Modular Machine Tool Frames

Uhlmann, Eckart; Saoji, Mihir; Peukert, Bernd

doi:10.1016/j.procir.2016.01.037

Cited by 8 publications

(2 citation statements)

References 12 publications

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“…From the inertia analysis of the counterweight disc and counterweight block [25], the total mass and total rotary inertia are 84.4 g and 32,000 g•mm 2 , respectively. The designed safety factor is set to 1.5, so the allowable acceleration of the actuator should be lower than 353 rad/s 2 according to Equation (7), that is, when the operation speed of the rotor system is 4200 rpm, the starting time of the spindle should be longer than 1.25 s. If the starting time is required to be shorter, the self-lock torque can be adjusted through the decrease of the air gap δ 3 . The relationship between the self-lock torque MT and the allowable acceleration α of the actuator can be written as:…”

Section: Self-lock Capacitymentioning

confidence: 99%

“…With the promotion of Industry 4.0 technology, intelligent spindles integrated with actuators and sensors will be the direction of future development of machine tool spindles [1,2]. These actuators are considered as legs and arms of intelligent spindles, including chatter suppression actuators [3][4][5][6], thermal error compensation actuators [7,8], bearing preload actuators [9,10], active balancing actuators [11] and so forth.…”

Section: Introductionmentioning

confidence: 99%

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Performance Analysis and Experimental Research of Electromagnetic-Ring Active Balancing Actuator for Hollow Rotors of Machine Tool Spindles

Pan

Wei

et al. 2019

Applied Sciences

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Active balancing actuators are essential components of intelligent machine tool spindles to automatically reduce the unbalance vibration and promote machining accuracy and efficiency. In this study, a novel electromagnetic-ring actuator is introduced, which can be integrated into the hollow rotor of the spindle and compensate the initial mass imbalance through step rotation of two counterweight discs driven by the magnetic field. The working principle of the actuator is described in detail and its performance is analyzed, including balancing ability, balancing accuracy and self-lock capacity. To control the normal operation of the actuator, a phase detection and control program was developed. Finally, to verify the effectiveness of the novel actuator, function experiments and active balancing experiments were carried out. The experimental results show that the novel actuator could reduce the unbalance vibration of the machine tool spindle by 87.5% at 3600 rpm.

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Section: Self-lock Capacitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Performance Analysis and Experimental Research of Electromagnetic-Ring Active Balancing Actuator for Hollow Rotors of Machine Tool Spindles

Pan

Wei

et al. 2019

Applied Sciences

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Sustainable Solutions for Machine Tools

Uhlmann

Lang

Prasol

et al. 2017

Sustainable Production, Life Cycle Engineering and Management

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Environmental, economic and social changes of any significant proportions cannot take place without a major shift in the manufacturing sector. In today's manufacturing processes, economic efficiency is realised through high volumes with the use of specialised machine tools. Change in society, such as in the form of mobility and digitisation, requires a complete overhaul in terms of thinking in the manufacturing industry. Moreover, the manufacturing industry contributes over 19 % to the world's greenhouse gas emissions. As a consequence of these issues, a demand for sustainable solutions in the production industry is increasing. In particular, the concept of "cost" in manufacturing processes and thus the "system boundaries" within the production of the future has to be changed. That is, a great number of aspects to the machine tool and production technology industries can be improved upon in order to achieve a more sustainable production environment. Within this chapter, the focus lies on microsystem technology enhanced modular machine tool frames, adaptive mechatronic components, as well as on internallycooled cutting tools. An innovative machine tool concept has been developed recently, featuring a modular machine tool frame using microsystem technology for communication within the frame, which allows for a high level of flexibility. Furthermore, add-on upgrading systems for outdated machine tools-which are particularly relevant for developing and emerging countries-are poised to gain in importance in the upcoming years. The system described here enables the accuracy of outdated machine tools to be increased, thus making these machine tools comparable to modern machine tool systems. Finally, the cutting process requires solutions for dry machining, as the use of cooling lubricants is environmentally damaging and a significant cost contributor in machining processes. One such solution is the use of internally cooled cutting tools.

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Thermal-mechanical coupling calculation method for deformation error of motorized spindle of machine tool

Zhang

Zhao

et al. 2021

Engineering Failure Analysis

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Utilization of Thermal Energy to Compensate Quasi-static Deformations in Modular Machine Tool Frames

Cited by 8 publications

References 12 publications

Performance Analysis and Experimental Research of Electromagnetic-Ring Active Balancing Actuator for Hollow Rotors of Machine Tool Spindles

Performance Analysis and Experimental Research of Electromagnetic-Ring Active Balancing Actuator for Hollow Rotors of Machine Tool Spindles

Sustainable Solutions for Machine Tools

Thermal-mechanical coupling calculation method for deformation error of motorized spindle of machine tool

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