Journal: CIRP Annals

Abbreviation

CIRP Ann.

Publisher

Elsevier

Journal Volumes

ISSN

0007-8506
1660-2773

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Publications1 - 10 of 58
  • Simulation for optimizing grain pattern on Engineered Grinding Tools
    Item type: Journal Article
    Pinto, F. W.; Vargas, G. E.; Wegener, Konrad (2008)
    CIRP Annals
  • High performance grinding of zirconium oxide (ZrO2) using hybrid bond diamond tools
    Item type: Journal Article
    Rabiey, M.; Jochum, N.; Kuster, F. (2013)
    CIRP Annals
  • Geometric error measurement and compensation of machines
    Item type: Journal Article
    Schwenke, H.; Knapp, W.; Haitjema, H.; et al. (2008)
    CIRP Annals
  • Efficient machining of complex-shaped seal slots for turbomachinery
    Item type: Journal Article
    Maradia, Umang; Kliuev, Mikhail; Baumgart, Christoph (2018)
    CIRP Annals
  • Noise and vibrations in machine tools
    Item type: Journal Article
    Wegener, Konrad; Bleicher, Friedrich; Heisel, Uwe; et al. (2021)
    CIRP Annals
    Mechanical manufacturing processes and their production machinery are noisy. The noise always stems from transient forces that excite the structure to vibrations, emitting sound waves into the environment due to vibrations on the surface. Noise emission is today considered as a quality defect of machinery and thus methods and means are sought to mitigate the noise emission to a level compatible with human operators. On the other hand as the noise origin is the process itself, the emitted noise has a signal content that directly indicates the status of the process and sometimes also the health state of the machine and its elements. Noise reduction today is still fairly experience based, which requires generating a good understanding of noise generation, noise transmission and noise radiation and is discussed in this paper. Measurement of noise and its analysis are indispensable for the traceback to the origin to focus the countermeasures but also to reveal the signal content out of the sound waves. Noise prediction is still at the threshold of industrial application, but will in future play a major role for including noise topics into the design from the beginning and not only as corrective measures after the machine is built. Available simulation tools are presented in this paper. The greatest progress in this respect stems from room acoustics and the automotive industry, where the requirements are much stricter than in the manufacturing environment. Ways and achievements in the utilization of noise signals for process and machine health monitoring will also be presented. The industry seeks here for broad band sensors, able to carry large amounts of easy to retrieve signals to reduce the number of additional sensors. Typical standards today collect countermeasures being applied for spreading the knowledge generated for intuitive approaches. The paper also shows future trends and developments and the research required in that field.
  • New positioning procedure for optical probes integrated on ultra-precision diamond turning machines
    Item type: Journal Article
    Buhmann, Marco; Roth, Raoul; Liebrich, Thomas; et al. (2020)
    CIRP Annals
    The ability to verify the geometrical quality of a machined workpiece on the machine tool itself can be a crucial advantage in ultra-precision diamond turning. This paper presents a new positioning procedure for optical one-dimensional (1D) probes integrated on diamond turning machines with two horizontal linear axes and one rotational axis. A tilted flat, mounted onto the spindle, is used to determine the offsets between the probe and the spindle axis in order to minimize measurement deviations referred to probe alignment errors. An estimation of the positioning uncertainty, which can be specified to be less than 0.3 µm, is given. © 2020 CIRP.
  • Laser based additive manufacturing in industry and academia
    Item type: Journal Article
    Schmidt, Sabine; Merklein, Marion; Bourell, David; et al. (2017)
    CIRP Annals
  • Robust characterization of anisotropic shear fracture strains with constant triaxiality using shape optimization of torsional twin bridge specimen
    Item type: Journal Article
    Kim, Yongnam; Zhang, Shunying; Grolleau, Vincent; et al. (2021)
    CIRP Annals
    In-plane torsion test has been drawing attention as an effective strategy to obtain good shear properties. Herein, a framework of shape optimization for a twin bridge specimen is presented to improve the performance while ensuring better machinability. The framework includes the consideration of material anisotropy and the determination of design variables. In this study, TRIP1180 sheet was employed as a target material. The optimized design was verified by an actual in-plane torsion test. The experimental results demonstrate that the proposed framework can optimize the shape of the twin bridge for maintaining zero triaxiality up to fracture occurrence.
  • Disassembly scheduling with multiple product types
    Item type: Journal Article
    Kim, H.-J.; Lee, D.-H.; Xirouchakis, P.; et al. (2003)
    CIRP Annals
Publications1 - 10 of 58