Thematische Bibliographien / Spindle stiffness

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Auswahl der wissenschaftlichen Literatur zum Thema „Spindle stiffness“

Autor: Grafiati

Veröffentlicht am 28. Juni 2021

Zuletzt aktualisiert am 29. Juli 2025

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Zeitschriftenartikel zum Thema "Spindle stiffness"

Li, Jiandong, Qiang Wang, Xurui Sun, et al. "Research on the Effect of Spindle Speed on the Softening and Hardening Characteristics of the Axial Operating Stiffness of Machine Tool Spindle." Lubricants 10, no. 7 (2022): 132. http://dx.doi.org/10.3390/lubricants10070132.

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Spindle stiffness is one of the most critical indicators for evaluating and measuring the service performance of spindles. The traditional static stiffness indexes only involve static analysis and rarely focus on the study of spindle-carrying capacity under operating conditions. In this paper, the explicit solution approach is used to develop a mechanical model of the spindle’s axial operating stiffness. This model was then used to explore the influence of rotational speed on the softening and hardening features of the spindle axial operating stiffness, and experimental verification was carrie

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Yang, Zhaohui, Hui Chen, and Tianxiang Yu. "Effects of rolling bearing configuration on stiffness of machine tool spindle." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 232, no. 5 (2017): 775–85. http://dx.doi.org/10.1177/0954406217693659.

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Rolling bearings are widely used in the complex mechanical systems as important components. With the advancement in the manufacturing technology, the requirements of high-performance machining tool became essential. A bearing is one of the most important components of spindle, and it is a crucial factor in determining the overall quality. The configuration of bearings of spindle is the key problem during high-performance spindle design, which influences the performance of spindle, especially stiffness. This paper aims to develop a method to analyze various spindle stiffnesses with different co

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Loram, Ian D., Martin Lakie, Irene Di Giulio, and Constantinos N. Maganaris. "The Consequences of Short-Range Stiffness and Fluctuating Muscle Activity for Proprioception of Postural Joint Rotations: The Relevance to Human Standing." Journal of Neurophysiology 102, no. 1 (2009): 460–74. http://dx.doi.org/10.1152/jn.00007.2009.

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Proprioception comes from muscles and tendons. Tendon compliance, muscle stiffness, and fluctuating activity complicate transduction of joint rotation to a proprioceptive signal. These problems are acute in postural regulation because of tiny joint rotations and substantial short-range muscle stiffness. When studying locomotion or perturbed balance these problems are less applicable. We recently measured short-range stiffness in standing and considered the implications for load stability. Here, using an appropriately simplified model we analyze the conversion of joint rotation to spindle input

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Khavin, Valerij, Evgen Khavin, and Borys Kyrkach. "STATIC ANALYSIS OF SPINDLE SHAFTS ON NONLINEAR ELASTIC SUPPORTS OF INTERRELATED STIFFNESSES." Bulletin of the National technical university "Kharkiv Polytechnic Institute" Series: Techniques in a machine industry, no. 2(10) (December 27, 2024): 15–31. https://doi.org/10.20998/2079-004x.2024.2(10).03.

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The spindle assembly of a metal cutting machine determines the accuracy and productivity of metalworking. The stiffness of the spindle assembly is estimated by the elastic movements of the spindle shaft under the influence of the working load. Correct modeling of bearing stiffness is necessary for obtaining reliable results during spindle stiffness analysis. An approach is proposed for the static analysis of spindle shafts, in which the elastic behavior of the supports is determined by matrices of interconnected stiffnesses. A stiffness matrix was introduced, which links the radial deformation

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Chen, Shao Hsien, Shang Te Chen, and Chien Cheng Hsu. "The Impact of Different Axial Oil Chamber Design on Hydrostatic Spindle." Applied Mechanics and Materials 789-790 (September 2015): 296–99. http://dx.doi.org/10.4028/www.scientific.net/amm.789-790.296.

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High-precision machining and large-scale tool are the most primary development trend of current machine tool and hydrostatic products are key technologies of high-precision machining equipments. However, these equipments mostly process miniature components, thus the adopted tools are relatively small and the spindles mainly use are mainly built-in types of HSK32 to HSK25 with revolutions speed over 25,000rpm. Some processing equipments are even equipped with hydrostatic or gas-static spindles. The study extends the axial oil chamber to radial ones to expand the action area of axial oil pressur

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Chen, Chuanhai, Liang Zhang, Chunlei Hua, Zhifeng Liu, Qingyu Meng, and Junze Shi. "Research on Online Non-Contact Test Device and Test Method for Bearing Stiffness of Electric Spindle." Machines 13, no. 6 (2025): 516. https://doi.org/10.3390/machines13060516.

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To enable experimental research on the dynamic support stiffness of electric spindle bearings, the authors designed a magnetic non-contact excitation and test device that can test the support stiffness of electric spindle bearings under a rotating state. The device includes load excitation and displacement detection components, which can collect the load loading and displacement data of electric spindle bearings under machine state in real time. The radial and axial loads can be applied at the same time, and the displacement detection component adopts a high-precision displacement sensor, whic

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Sakamoto, Haruhisa, Yuhei Maeki, and Shinji Shimizu. "Change in Dynamic Characteristics of Spindle for Machining Centers Caused by Chucking Mechanism of Clamped Toolholders." Key Engineering Materials 523-524 (November 2012): 521–26. http://dx.doi.org/10.4028/www.scientific.net/kem.523-524.521.

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In this study, the effects of clamping toolholders on the dynamic characteristics of spindle systems are evaluated experimentally. In the experiments, the transfer functions are obtained by the impulse response method, and then, the dynamic characteristic parameters are identified based on the vibration model of single-degree of freedom. Two types of machining center spindles and four types of toolholders are evaluated. From the experimental results, the following are revealed: (1) the clamping toolholder enhances the vibration amplitude markedly compared with that of the spindle not clamping

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Wang, Liping, Binbin Zhang, Jun Wu, Qinzhi Zhao, and Junjian Wang. "Stiffness modeling, identification, and measuring of a rotating spindle." Proceedings of the Institution of Mechanical Engineers, Part C: Journal of Mechanical Engineering Science 234, no. 6 (2019): 1239–52. http://dx.doi.org/10.1177/0954406219890368.

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The stiffness of a spindle at high speeds has a significant effect on the quality of the cutting surface and the machining accuracy. However, the spindle stiffness is difficult to be detected directly when the spindle is rotating, and the measured stiffness values are usually coupled with other parts of the spindle–tool system (such as toolholder, spindle–toolholder joint, tool). This paper presents a comprehensive method to deal with the stiffness modeling, identification, and measuring of a rotating spindle. Based on the deflection equation and the principle of superposition, the stiffness m

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Chen, Runlin, Xingzhao Wang, Chen Du, Jun Zha, Kai Liu, and Xiaoyang Yuan. "Stiffness Model and Experimental Study of Hydrostatic Spindle System considering Rotor Swing." Shock and Vibration 2020 (May 15, 2020): 1–8. http://dx.doi.org/10.1155/2020/5901432.

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For high-end CNC machine tools, the stiffness of the spindle system is one of the most important performance indicators. In this paper, the hydrostatic motorized spindle system of a grinding machine is taken as the research object, and a two-degree-of-freedom stiffness model of the spindle system considering rotor swing is proposed. The stiffness of the spindle system under different excitation frequencies is analyzed, and the contributions of the stiffness of two bearings to the stiffness of the spindle system are evaluated. The vibration test on the spindle system is implemented through the

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Gaber, Omar, and Seyed M. Hashemi. "On the Free Vibration Modeling of Spindle Systems: A Calibrated Dynamic Stiffness Matrix." Shock and Vibration 2014 (2014): 1–10. http://dx.doi.org/10.1155/2014/787518.

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The effect of bearings on the vibrational behavior of machine tool spindles is investigated. This is done through the development of a calibrated dynamic stiffness matrix (CDSM) method, where the bearings flexibility is represented by massless linear spring elements with tuneable stiffness. A dedicated MATLAB code is written to develop and to assemble the element stiffness matrices for the system’s multiple components and to apply the boundary conditions. The developed method is applied to an illustrative example of spindle system. When the spindle bearings are modeled as simply supported boun

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Dissertationen zum Thema "Spindle stiffness"

Chaigne, Agathe. "Cortical stiffness : a gatekeeper for spindle positioning in mouse oocytes." Thesis, Paris 6, 2014. http://www.theses.fr/2014PA066288/document.

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Les divisions méiotiques sont très asymétriques en taille et génèrent une très grosse cellule, l'ovocyte, et deux petites cellules, les globules polaires. Cette asymétrie est permise par la migration du fuseau lors de la première division jusqu'au cortex le plus proche. Cette migration ne dépend pas des microbutules mais de la Myosin-II et d'un réseau de filaments d'actine nucléé par la coopération des nucléateurs de filaments droits Formin-2 et Spire1/2. Des observations préliminaires effectuées au laboratoire ont décrit un épaississement du cortex d'actine pendant la migration du fuseau, mai

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Chaigne, Agathe. "Cortical stiffness : a gatekeeper for spindle positioning in mouse oocytes." Electronic Thesis or Diss., Paris 6, 2014. https://accesdistant.sorbonne-universite.fr/login?url=https://theses-intra.sorbonne-universite.fr/2014PA066288.pdf.

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Sovadina, František. "Návrh vřeteníku soustruhu." Master's thesis, Vysoké učení technické v Brně. Fakulta strojního inženýrství, 2021. http://www.nusl.cz/ntk/nusl-443734.

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The thesis deals with the design and construction of headstocks of a turning centre. The aim is to design a spindle with an output of 20 kW and a maximum speed of 5000 1/min. The research part of the thesis is focused on the description of the basic parameters of the headstock and turning centres needed for the construction of the headstock and contains an analysis of the available spindles on the market. The next part of the thesis deals with the selection and calculation of cutting conditions and the necessary parameters. Analytical calculations are then verified using FEM analysis. At the e

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Laguna, Serrano Sergio. "Machining System Measurement and Modelling." Thesis, KTH, Industriell produktion, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-226333.

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Machine tools need to be tested to check they behave correctly while machining. A bigger production (capacity), improving the accuracy in final products (quality) or reducing costs are some of the main goals. Reducing the maintenance of the machines, their nonproductive time and a higher quality of the final parts, have a strong influence in the costs. Even machines built to the same specification present different properties and behaviours, which leads into a reduction of the flexibility when it comes to move operations among them. This study is focused on the measurement and modelling of fou

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Небога, Василь Ігорович, та Vasyl Neboha. "Дослідження жорсткісних характеристик станини фрезерного верстату". Master's thesis, Тернопільський національний технічний університет імені Івана Пулюя, 2018. http://elartu.tntu.edu.ua/handle/lib/26999.

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Роботу виконано на кафедрі конструювання верстатів, інструментів та машин Тернопільського національного технічного університету імені Івана Пулюя Міністерства освіти і науки України<br>У дипломній роботі розглянуті питання, які пов'язані з аналізом жорсткості несучої системи верстата, процесу механічної обробки деталі, дослідженням формоутворення та розробкою оптимальної компонувальної схеми верстата. Виконано проектний розрахунок та розробку окремих вузлів верстата. Виконано 3D моделювання корпусу (станини) верстата мод. 6Р13Ф3. Виконано статичний та модальний аналіз корпусу верстата.<br>The

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Dodgen, Eric Ray. "Spinal Implant with Customized and Non-Linear Stiffness." BYU ScholarsArchive, 2011. https://scholarsarchive.byu.edu/etd/2699.

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There is a need for spinal implants that have nonlinear stiffness to provide stabilization if the spine loses stiffness through injury, degeneration, or surgery. There is also a need for spinal implants to be customizable for individual needs, and to be small enough to be unobtrusive once implanted. Past and ongoing work that defines the effects of degeneration on the torque rotation curve of a functional spinal unit (FSU) were used to produce a spinal implant which could meet these requirements. This thesis proposes contact-aided inserts to be used with the FlexSuRe™ spinal implant to create

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Mirbagheri, M. Mehdi (Mohammad Mehdi). "Intrinsic and reflex stiffness in normal & spastic spinal cord injured subjects." Thesis, McGill University, 2000. http://digitool.Library.McGill.CA:80/R/?func=dbin-jump-full&object_id=36823.

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The contributions of stretch reflexes to overall joint stiffness are unknown in normal and pathological function. The main reason for this is difficulty in distinguishing the mechanical contributions of the two mechanisms. We used a new non-linear system identification technique to achieve this and address three specific objectives.<br>First, we identified intrinsic and reflex contributions to dynamic ankle stiffness over a wide range of tonic voluntary contraction levels and ankle positions in healthy human subjects (normals). Intrinsic and reflex dynamic stiffness were strongly modulated wit

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Moorhouse, Kevin Michael. "Role of Intrinsic and Reflexive Dynamics in the Control of Spinal Stability." Diss., Virginia Tech, 2005. http://hdl.handle.net/10919/29265.

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Spinal stability describes the ability of the neuromuscular system to maintain equilibrium in the presence of kinematic and control variability, and may play an important role in the etiology of low-back disorders (LBDs). The primary mechanism for the neuromuscular control of spinal stability is the recruitment and control of active paraspinal muscle stiffness (i.e., trunk stiffness). The two major components of active muscle stiffness include the immediate stiffness contribution provided by the intrinsic stiffness of actively contracted muscles, and the delayed stiffness contribution provid

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Zaragoza-Rivera, Yadetsie Nichole. "Pediatric Cervical Spine Range of Motion, Strength, and Stiffness in the Sagittal and Coronal Planes." The Ohio State University, 2020. http://rave.ohiolink.edu/etdc/view?acc_num=osu1587411565508067.

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Dmowski, Jan. "Design and evaluation of a non-invasive spinal indentation device for assessing stiffness of human musculoskeletal system." Thesis, National Library of Canada = Bibliothèque nationale du Canada, 1999. http://www.collectionscanada.ca/obj/s4/f2/dsk1/tape8/PQDD_0017/MQ47979.pdf.

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Bücher zum Thema "Spindle stiffness"

Wong, Arnold YL. Understanding Low Back Biomechanics: Through the relation between spinal stiffness and back muscle activity. LAP Lambert Academic Publishing, 2012.

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van Gaalen, Floris, Désirée van der Heijde, and Maxime Dougados. Diagnosis and classification of axial spondyloarthritis. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198734444.003.0003.

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Axial spondyloarthritis (axSpA) is a potentially disabling chronic inflammatory disease affecting the spine and sacroiliac (SI) joints. Lead symptoms are chronic back pain and stiffness. The disease is called radiographic axSpA or ankylosing spondylitis (AS) when, on plain radiographs, bone changes consistent with sacroiliitis are present. When no evidence of sacroiliitis is seen on radiographs, it is called non-radiographic axSpA. In such cases, diagnosis is made based on evidence of active inflammation of SI joints on magnetic resonance imaging (MRI) and clinical and laboratory features, or

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Siebert, Stefan, Sengupta Raj, and Alexander Tsoukas. Inflammatory back pain. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198755296.003.0006.

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Inflammatory back pain (IBP) refers to a collection of symptoms that may help identify patients with possible inflammatory spinal disease. A number of criteria sets have been proposed for IBP, which share common features such as: onset of symptoms aged <40 years, alternating buttock pain, improvement with exercise, worsening with rest, gradual onset, early morning stiffness, and improvement with NSAIDs. The IBP criteria were initially developed and validated in patients with ankylosing spondylitis, but have subsequently been shown to perform similarly in patients with axial spondyloarthriti

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Buchanan, Elaine, and Chris Lavy. Low back pain. Edited by Patrick Davey and David Sprigings. Oxford University Press, 2018. http://dx.doi.org/10.1093/med/9780199568741.003.0064.

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Low back pain (LBP) is pain arising from the structures of the lumbar spine, including joints, discs, connective tissue, and nerves. Symptoms include pain and, muscle tightness or stiffness, with or without referral of pain to the legs. Most (95%) of LBP is managed in primary care; the rest is managed in secondary care. LBP affects nearly everyone at some point in their life and has an annual prevalence of around 40%. It is less common in children but from age 16 onwards the point prevalence for all age groups is around 25%. Many experience milder persisting symptoms interspersed with exacerba

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Siebert, Stefan, Sengupta Raj, and Alexander Tsoukas. What are axial spondyloarthritis and ankylosing spondylitis? Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198755296.003.0001.

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Ankylosing spondylitis (AS) is a chronic inflammatory arthritis affecting mainly the sacroiliac joints and spine, resulting in pain, stiffness, and reduced movement. AS has a major negative impact on patients’ quality of life. AS is part of a larger group of related spondyloarthritis (SpA) conditions and patients with AS often have extra-articular manifestations of these conditions. Over the past decade, there have been major advances in the understanding of the genetics and pathophysiology of the disease. Advances in imaging have allowed patients to be diagnosed without having to develop the

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Andy, Doctor Max. Baclofen: The Most Powerful Pain Killer to Fight Muscle Symptoms Which Includes; Pain, Stiffness, Spasm, As a Result of Multiple Sclerosis, Spinal Cord Injuries and Other Disorders. Independently Published, 2019.

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Siebert, Stefan, Raj Sengupta, and Alexander Tsoukas, eds. Axial Spondyloarthritis. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780198755296.001.0001.

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Ankylosing spondylitis (AS) is a chronic inflammatory arthritis affecting mainly the sacroiliac joints and spine, resulting in pain, stiffness, and reduced movement. Over the past decade there have been major advances in many aspects of the disease, including a broadening of the disease description to axial spondyloarthritis (axSpA). While the many advances have transformed the lives of patients with axSpA, they have also increased complexity for non-specialists in this area. This handbook contains a timely update of the key developments and current state of play in axSpA. It is intended prima

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Sieper, Joachim. Ankylosing spondylitis. Oxford University Press, 2013. http://dx.doi.org/10.1093/med/9780199642489.003.0113.

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Ankylosing spondylitis (AS) is a chronic inflammatory disease predominantly of the sacroiliac joint (SIJ) and the spine. It starts normally in the second decade of life and has a slight male predominance. The prevalence is between 0.2 and 0.8% and is strongly dependent on the prevalence of HLA B27 in a given population. For the diagnosis of AS, the presence of radiographic sacroiliitis is mandatory. However, radiographs do not detect active inflammation but only structural bony damage. Most recently new classification criteria for axial spondyloarthritis (SpA) have been developed by the Assess

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Sieper, Joachim. Axial spondyloarthropathies. Oxford University Press, 2016. http://dx.doi.org/10.1093/med/9780199642489.003.0113_update_003.

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Axial spondyloarthritis (axSpA) is a chronic inflammatory disease predominantly of the sacroiliac joint (SIJ) and the spine. It starts normally in the second decade of life and has a slight male predominance. The prevalence is between 0.2% and 0.8% and is strongly dependent on the prevalence of HLA-B27 in a given population. AxSpA can be split in patients with radiographic axSpA (also termed ankylosing spondylitis (AS)) and in patients with non-radiographic axSpA (nr-axSpA). For the diagnosis of AS, the presence of radiographic sacroiliitis is mandatory. However, radiographs do not detect acti

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Buchteile zum Thema "Spindle stiffness"

Heinze, Tassilo, Hans-Joachim Koriath, and Alexander Pavlovich Kuznetsov. "Thermal Growth of Motor Spindle Units." In Lecture Notes in Production Engineering. Springer International Publishing, 2023. http://dx.doi.org/10.1007/978-3-031-34486-2_17.

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AbstractThe paper deals with strategies for numerical compensation of thermo-mechanical deformation of machine tool spindles and the TCP, respectively. Methods for digital modelling and simulating the temperatures and thermo-elastic deformation are presented. This is done by considering the geometry, material data, drive signals and temperature values. The topic of compensating thermo-elastic effects in spindle units is an important topic in manufacturing. Analytical equation and function block methods for measuring and predicting thermal spindle growth are compared. The heat flow model conver

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Bhardwaj, Vibish S., Ramesh H. Aralaguppi, Ashok N. Badhe, Bhargav, and Arun R. Rao. "Study and Estimation of Static Stiffness of Machine Tool Spindle." In Lecture Notes on Multidisciplinary Industrial Engineering. Springer Singapore, 2020. http://dx.doi.org/10.1007/978-981-15-3254-2_14.

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Aralaguppi, Ramesh H., K. B. Siddesh, and Ashok N. Bade. "Joint Stiffness Estimation Between Spindle-Tool Holder by Considering Clamping Forces." In Lecture Notes in Mechanical Engineering. Springer Singapore, 2021. http://dx.doi.org/10.1007/978-981-16-0550-5_59.

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Kononenko, A. S., T. A. Kildeev, Ignatkin I. Yu, and N. A. Sergeeva. "Effect of Thin Polymer Interlayers in the Spindle-Bearing Joint on the Stiffness and Durability of Spindle Bearing Assemblies of Mills." In Intelligent Computing and Optimization. Springer Nature Switzerland, 2023. http://dx.doi.org/10.1007/978-3-031-50158-6_21.

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Bouaziz, Amel, Maher Barkallah, Slim Bouaziz, Jean-Yves Cholley, and Mohamed Haddar. "Non-linear Stiffness and Damping Coefficients Effect on a High Speed AMB Spindle in Peripheral Milling." In Mechatronic Systems: Theory and Applications. Springer International Publishing, 2014. http://dx.doi.org/10.1007/978-3-319-07170-1_10.

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Melnyk, Oleksandr, Larysa Hlembotska, Nataliia Balytska, Viacheslav Holovnia, and Mykola Plysak. "The Imitation Study of Taper Connections Stiffness of Face Milling Cutter Shank Using Machine Spindle in the SolidWorks Simulation Environment." In Lecture Notes in Mechanical Engineering. Springer International Publishing, 2019. http://dx.doi.org/10.1007/978-3-030-22365-6_60.

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Pham, Van-Hung, Manh-Toan Nguyen, and Tuan-Anh Bui. "Improve the Loading Capacity and Stiffness of Hydrostatic Spindle Medium Sized Circular Grinding Machines Based on Simulation and Geometric Parameters of the Bearing." In Springer Proceedings in Materials. Springer International Publishing, 2020. http://dx.doi.org/10.1007/978-3-030-45120-2_45.

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Garrido-Cumbrera, Marco, Victoria Navarro-Compán, Christine Bundy, et al. "Physical Health." In Axial Spondyloarthritis: Patient-Reported Impact in Europe. Springer International Publishing, 2022. http://dx.doi.org/10.1007/978-3-030-97606-4_6.

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Ebara, Sohei, Masao Tanaka, Yoshiharu Morimoto, et al. "Intraoperative Measurement of Lumbar Spinal Stiffness." In Lumbar Fusion and Stabilization. Springer Japan, 1993. http://dx.doi.org/10.1007/978-4-431-68234-9_6.

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Freudiger, Stefan. "Biomechanical Engineering in Choice of Different Stiffness Material." In Cervical Spine. Springer International Publishing, 2016. http://dx.doi.org/10.1007/978-3-319-21608-9_14.

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Konferenzberichte zum Thema "Spindle stiffness"

Yin, Yuhan, Aibin Zhu, Peng Xu, Jing Zhang, and Jie Liu. "Bionic Design and Kinematic Evaluation of a Stiffness-Adjustable Spinal Exoskeleton for Trunk Support." In 2024 3rd International Conference on Service Robotics (ICoSR). IEEE, 2024. https://doi.org/10.1109/icosr63848.2024.00054.

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Yokohara, Kazuma, Shuntaro Yamato, and Atsushi Matsubara. "Development of a Contactless Load Generator for Spindle Dynamic Compliance Measurement." In 2024 International Symposium on Flexible Automation. American Society of Mechanical Engineers, 2024. http://dx.doi.org/10.1115/isfa2024-141177.

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Abstract The stiffness of the spindle is known to vary depending on the operating conditions. A convenient measurement method is necessary to evaluate the dynamic stiffness of various spindles. In this study, a small electromagnetic load generator was developed to measure the dynamic compliance of the spindle. In this paper, we report the results of measuring dynamic compliance by exciting the spindle of an actual vertical machining center using this generator.

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Wan, Shaoke, Jun Hong, Wenjun Su, Xiaohu Li, Yanhui Sun, and Wei Chen. "Measurement of Dynamic Performances of High-Speed Rotating Spindle by Non-Contact Electromagnetic Loading Device." In ASME 2017 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2017. http://dx.doi.org/10.1115/imece2017-70301.

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When spindle rotates, the stiffness and natural frequency that reflect the dynamic performances of spindle system, vary with different rotating conditions. Therefore, the measurement of stiffness and natural frequency is highly needed. However, it is difficult to apply excitation to the rotating spindle during the measurement. In this paper, a non-contact electromagnetic loading device is developed to provide desirable excitation for the measurement. Next, an experimental spindle test rig with constant pressure preload is established. With the help of the proposed loading device, stiffness and

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Gibson, Alex O., and Jeffrey L. Stein. "Reduced Order Finite Element Modeling of Thermally Induced Bearing Loads in Machine Tool Spindles." In ASME 1999 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1999. http://dx.doi.org/10.1115/imece1999-0115.

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Abstract Machine tool spindle bearings are subjected to a large range of axial and radial loads due to the machining process. Further the rotating spindle must be extremely stiff to minimize the cutting tool’s deflection. The high spindle stiffness is achieved by applying a mechanical load to the bearings, the preload. In fixed preload spindles the bearing loads tend to increase with increasing spindle speed due to thermal expansion and it is well established that these thermally induced loads can lead to premature bearing failure. A model of thermally induced bearing load in angular contact b

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Noel, David, Mathieu Ritou, Sebastien Le Loch, and Benoit Furet. "Bearings Influence on the Dynamic Behavior of HSM Spindle." In ASME 2012 11th Biennial Conference on Engineering Systems Design and Analysis. American Society of Mechanical Engineers, 2012. http://dx.doi.org/10.1115/esda2012-82563.

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The aeronautic industry requires high speed and high power spindles to obtain high material removal rates during long rough milling operations. The weakness of HSM spindle is the bearings, although high precision hybrid ball bearings have been developed to achieve this critical application. Inadequate use of spindles inevitably leads to shortened lifetimes. Choosing the operating conditions is a required step before machining applications. It can be achieved through either experimental tests or numerical modeling that leads to stability lobe diagrams. Stability of cuts relies on the dynamic be

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Rowell, Timothy, and Yung C. Shin. "Analysis of Tapered Roller Bearing Stiffness." In ASME 1997 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 1997. http://dx.doi.org/10.1115/imece1997-1171.

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Abstract This paper presents a computational model and analysis of tapered roller bearing stiffness. A five degree of freedom model is coupled with a spindle model and implemented in a computer code. The predicted results are verified by other published data. The importance of proper modeling of the spindle and bearing interaction is identified. A sensitivity analysis of the bearing stiffness in terms of geometric and operational parameters is presented.

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Nakao, Yohichi, Kohei Yamada, and Kenji Suzuki. "Design of Spindle Supported by High Stiffness Water Hydrostatic Thrust Bearing." In ASME 2013 International Mechanical Engineering Congress and Exposition. American Society of Mechanical Engineers, 2013. http://dx.doi.org/10.1115/imece2013-62729.

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A precision spindle is a key component of the ultra-precision machine tools that are used for machining precision molds for producing various lenses and other precise parts. The machining accuracy required for the parts now reaches several tens of nanometers. In order to achieve the desired machining accuracy, the precise spindle system with high stiffness bearings is inevitably needed for the ultra-precision machine tools. The paper thus deals with a design of a spindle supported by water hydrostatic bearings. An objective of the study is to design the precision spindle supported by the water

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Chen, C. H., K. W. Wang, and Y. C. Shin. "An Integrated Approach Toward the Dynamic Analysis of High-Speed Spindles: Part I — System Model." In ASME 1993 Design Technical Conferences. American Society of Mechanical Engineers, 1993. http://dx.doi.org/10.1115/detc1993-0210.

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Abstract Experimental evidence [Shin, 1992] has shown that the natural frequencies of high speed spindles with angular contact ball bearings decrease with increasing rotational speed. A recent study [Wang, et al., 1991] illustrated that this phenomenon is caused by stiffness change of the bearings. A simplified approximation was used in the analysis to examine the bearing radial stiffness at high speeds. While the investigation explained the experimental observations in a qualitative sense, the analytical results so far are not sufficient to quantitatively describe the spindle behavior under h

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Adams, Maurice L., and Michael A. Laurich. "Design, Analysis and Testing of an Inside-Out Tilting-Pad Journal Bearing With Real-Time Controllable Preload and Stiffness." In World Tribology Congress III. ASMEDC, 2005. http://dx.doi.org/10.1115/wtc2005-63067.

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It has recently been shown that high-speed grinding can be applied to the finishing of ceramics with considerable improvements in throughput and quality. This will require new high-speed high-power centerless grinding spindles (7,000 RPM, 50 HP), with high-stiffness of three hundred and fifty million Newtons/meter (2 million lb/in). To meet these requirements a novel inside-out, three-pad, pivoting-pad oil-fed hydrodynamic journal bearing has been devised, built and tested. One of the three pad’s pivot point is supported by a hydraulically-actuated radial-motion loading piston. This provides r

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Gao, Siyu, Kai Cheng, and Hui Ding. "Multi-Physics Simulation Based Design and Analysis of a High Speed Aerostatic Spindle and its Performance Assessment." In ASME 2014 International Design Engineering Technical Conferences and Computers and Information in Engineering Conference. American Society of Mechanical Engineers, 2014. http://dx.doi.org/10.1115/detc2014-34086.

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High speed aerostatic spindles operating at a speed up to 200,000 r/min are a complex product with a multi-physics nature resulted from embedded mechanical-thermal-fluidic-electromagnetic fields. It is much needed to have a comprehensive analysis on the multi-physic interactions within a high speed aerostatic spindle, which is essential for design of the spindles working at much higher speeds and accuracy in various increasingly stringent engineering conditions. This paper presents a multi-physics integrated modelling approach for design and analysis of the high speed aerostatic spindle, inclu

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Berichte der Organisationen zum Thema "Spindle stiffness"

Li, Xuan, Junjie Wang, Jing Mao, and Yunnan Li. Therapeutic effects of traditional Chinese medicine fumigating plus Yang-He decoction for patients with ankylosing spondylitis: A systematic review and network meta-analysis. INPLASY - International Platform of Registered Systematic Review and Meta-analysis Protocols, 2023. http://dx.doi.org/10.37766/inplasy2023.4.0074.

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Review question / Objective: To assess the therapeutic effects of combined TCMF with YHD for AS patients. Condition being studied: Traditional Chinese medicine fumigating (TCMF) and Yang-He decoction (YHD) are widely used for ankylosing spondylitis (AS), whether combined used TCMF and YHD provides superior therapeutic effects for AS remained unclear. Eligibility criteria: (1) Patients: adult patients diagnosed with AS; (2) Treatments: TCMF plus YHD, TCMF, YHD, and WM; (3) Outcomes: the primary endpoint was effective rate, and the secondary endpoints including Visual Analogue Scale (VAS) score,

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