Search Results - "Campa, J F"

Preventing chatter vibrations in heavy-duty turning operations in large horizontal lathes by Urbikain, G., Campa, F.-J., Zulaika, J.-J., López de Lacalle, L.-N., Alonso, M.-A., Collado, V.

“…Productivity and surface finish are typical user manufacturer requirements that are restrained by chatter vibrations sooner or later in every machining…”
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Chatter avoidance in the milling of thin floors with bull-nose end mills: Model and stability diagrams by Campa, F.J., Lopez de Lacalle, L.N., Celaya, A.

“…The milling of thin parts is a high added value operation where the machinist has to face the chatter problem. The study of the stability of these operations…”
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Stability prediction in straight turning of a flexible workpiece by collocation method by Urbikain, G., López de Lacalle, L.N., Campa, F.J., Fernández, A., Elías, A.

“…Chatter vibrations produced during turning of slender parts or boring with flexible tools lead to a wavy work surface, and reduce the spindle headstock life…”
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Characterization and stability analysis of a multivariable milling tool by the enhanced multistage homotopy perturbation method by Compeán, F.I., Olvera, D., Campa, F.J., López de Lacalle, L.N., Elías-Zúñiga, A., Rodríguez, C.A.

“…This work deals with the characterization of a three stage multivariable tool used for high-performance milling and the modelling of its dynamic behaviour to…”
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Stability limits of milling considering the flexibility of the workpiece and the machine by Bravo, U., Altuzarra, O., López de Lacalle, L.N., Sánchez, J.A., Campa, F.J.

“…High speed machining of low rigidity structures is a widely used process in the aeronautical industry. Along the machining of this type of structures, the…”
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Design and Test of a Multitooth Tool for CFRP Milling by López de Lacalle, N., Lamikiz, A., Campa, F.J., Valdivielso, A. FDZ, Etxeberria, I.

“…This article deals with the new development of a family of router milling tools for the high-performance milling of carbon fiber reinforced plastics. The new…”
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A method to measure the damping introduced by linear guides in large milling machines by Oleaga, I., Zulaika, J.J., Campa, F.J., Hernando, J.

“…•Theoretical-experimental method to calculate the damping of linear guides.•Calculating real damping contribution of each linear guide assembled in a…”
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Experimental validation of the kinematic design of 3-PRS compliant parallel mechanisms by Ruiz, A., Campa, F.  J., Roldán-Paraponiaris, C., Altuzarra, O., Pinto, C.

“…In this paper, a procedure for the kinematic design of a 3-PRS compliant parallel manipulator of 3 degree of freedom is proposed. First, under the assumption…”
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Solid subtraction model for the surface topography prediction in flank milling of thin-walled integral blade rotors (IBRs) by Artetxe, E., Olvera, Dv, de Lacalle, L. N. López, Campa, F. J., Olvera, Dn, Lamikiz, A.

“…Current CAM and milling verification software packages are not ready to predict form and surface errors derived from non-ideal conditions such as runout tool…”
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An integrated process–machine approach for designing productive and lightweight milling machines by Zulaika, J.J., Campa, F.J., Lopez de Lacalle, L.N.

“…This paper provides an integrated approach for designing large milling machines, taking both mass reduction of mobile structural components and the maximum…”
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Propagation of assembly errors in multitasking machines by the homogenous matrix method by Díaz-Tena, E., Ugalde, U., López de Lacalle, L. N., de la Iglesia, A., Calleja, A., Campa, F. J.

“…In this work, a methodology for the assessment of the geometrical accuracy of a multiaxis machine, the type usually called multitasking machine, was fully…”
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Model for surface topography prediction in peripheral milling considering tool vibration by Arizmendi, M., Campa, F.J., Fernández, J., López de Lacalle, L.N., Gil, A., Bilbao, E., Veiga, F., Lamikiz, A.

“…This paper presents a model for the prediction of surface topography in peripheral milling operations taking into account that the tool vibrates during the…”
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Determination of the stability lobes in milling operations based on homotopy and simulated annealing techniques by Olvera, D., Elías-Zúñiga, A., Martínez-Alfaro, H., López de Lacalle, L.N., Rodríguez, C.A., Campa, F.J.

“…The stability of a thin wall workpiece milling process is investigated through a single degree of freedom system that mimics the milling machine operation. The…”
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Analysis of the tool tip radial stiffness of turn-milling centers by Olvera, D., de Lacalle, L. N. López, Compeán, F. I., Fz-Valdivielso, A., Lamikiz, A., Campa, F. J.

“…Modern industry requires high-precision machines and processes. This requirement implies the determination and reduction of all possible sources of error. For…”
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Selection of cutting conditions for a stable milling of flexible parts with bull-nose end mills by Campa, F.J., López de Lacalle, L.N., Lamikiz, A., Sánchez, J.A.

“…In this paper, a three-dimensional dynamic model for the calculation of the stability lobes of low rigidity parts is applied for the prediction of chatter…”
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Reducing treatment delay and improving diagnostic accuracy for patients with acute stroke by Campa, J F

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Thyrotoxic neuropathy (Basedow's paraplegia) by Feibel, J H, Campa, J F

“…Polyneuropathy is a rare but possible manifestation of severe hyperthyroidism. The patient reported here developed a polyneuropathy affecting mostly leg…”
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Model development for the prediction of surface topography generated by ball-end mills taking into account the tool parallel axis offset. Experimental validation by Arizmendi, M., Fernández, J., Lacalle, L.N. López de, Lamikiz, A., Gil, A., Sánchez, J.A., Campa, F.J., Veiga, F.

“…This paper presents a model for the topography prediction of ball-end milled surfaces, considering the tool parallel axis offset. First, the equations of…”
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Reducing Treatment Delay and Improving Diagnostic Accuracy for Patients With Acute Stroke by Mines, Daniel, Rosenzweig, Steven

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Adult toxoplasmosis presenting as polymyositis and cerebellar ataxia by Greenlee, J E, Johnson, Jr, W D, campa, J F, Adelman, L S, Sande, M A

“…A patient with toxoplasmosis had cerebellar, spinal cord, nerve root, and skeletal muscle symptoms. Toxoplasma gondii was isolated from skeletal muscle, and…”
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