Results 191 to 200 of about 90,567 (273)

Evaluation, calibration, and modal analysis for determination of contact stiffness between workpiece and components of milling fixture

Proceedings of the Institution of mechanical engineers. Part B, journal of engineering manufacture, 2022
The stability of workpiece inside fixture influences the dynamics of machining. Although, the workpiece is uniquely and deterministically positioned and grasped by the fixture, it undergoes small displacements due to the contact compliance resulting from
M. Sohrabifard, M. Nategh, M. Ghazavi
semanticscholar   +1 more source

Prediction of Surface Profile Evolution of Workpiece and Lapping plate in Lapping Process

Journal of manufacturing science and engineering, 2021
Lapping has a history of hundreds of years, yet it still relies on the experience of workers. To improve the automaticity and controllability of the lapping process, a modeling method of friction and wear is developed to predict the surface profile ...
Zhichao Geng, P. Zhou, L. Meng, Ying Yan, D. Guo   +4 more
semanticscholar   +1 more source

Experimental study on the chip morphology, tool–chip contact length, workpiece vibration, and surface roughness during high-speed face milling of A6061 aluminum alloy

Proceedings of the Institution of mechanical engineers. Part B, journal of engineering manufacture, 2020
In this study, experiments of high-speed face milling of A6061 aluminum alloy with a carbide insert milling cutter under dry cutting conditions were conducted.
Thi-Hoa Pham, D. Nguyen, T. Banh, V. Tong   +3 more
semanticscholar   +1 more source

Workpiece Measurement Device—Workpiece Height Classification

2020
With Industry 4.0 taking over the facilities and machine vision is ubiquitous, legacy machines fall behind and become unnecessary burden, while still being able to operate and produce for years to come. This paper presents prototype of one of the devices that will enable legacy machines to catch up with inevitable changes.
Ermin Podrug, Slobodan Lubura
openaire   +1 more source

Virtual workpiece: workpiece representation for material removal process

The International Journal of Advanced Manufacturing Technology, 2011
In this paper, an efficient methodology to generate a virtual workpiece (VWP) is presented. VWP is a workpiece in a virtual environment in which the geometric, kinematic, and thermo-mechanical effects of the process and resources can be reflected. VWP encompasses not only the macro-information corresponding to the shape of the “virtually” machined ...
Seok Won Lee, Andreas Nestler
openaire   +1 more source

Peg-in-Hole Using 3D Workpiece Reconstruction and CNN-based Hole Detection

IEEE/RJS International Conference on Intelligent RObots and Systems, 2020
This paper presents a method to cope with autonomous assembly tasks in the presence of uncertainties. To this aim, a Peg-in-Hole operation is considered, where the target workpiece position is unknown and the peg-hole clearance is small.
M. Nigro, M. Sileo, F. Pierri, K. Genovese, D. Bloisi, F. Caccavale   +5 more
semanticscholar   +1 more source

Process parallel simulation of workpiece temperatures using sensory workpieces

CIRP Journal of Manufacturing Science and Technology, 2018
Abstract Process induced heat causes workpiece shape deviations during machining and may result in rejected parts. As unpredictable processing and boundary conditions cannot be simulated in the process planning phase, a process parallel simulation of the workpiece temperature is required to observe and compensate thermal effects.
Berend Denkena, Marc-André Dittrich, Florian Uhlich, Marcel Wichmann, Markus Mücke   +4 more
openaire   +1 more source

Vibration reduction during milling of highly flexible workpieces using active workpiece holder system

Review of Scientific Instruments, 2021
The milling of highly flexible workpieces, such as thin-walled structures used in turbine blades, aerospace equipment, and jet engine compressors, requires vibration compensation to improve the quality of the workpiece surface. Vibration can be reduced by selecting appropriate cutting parameters. However, this approach reduces system productivity. This
T. H. Hong, J. H. Lee, C. H. Seo, K. H. Kim, H. Y. Kim   +4 more
openaire   +2 more sources

Stable Workpiece Fixturing

20th Design Automation Conference: Volume 2 — Robust Design Applications; Decomposition and Design Optimization; Optimization Tools and Applications, 1994
Abstract In this paper, we present the spatial and planar force-displacement relationships which characterize individual contacts on a fixtured workpiece. The compliance at each contact is modeled and expressions for the changes in contact forces as a function of the rigid body relative motion between the fixture elements and the ...
Joseph P. Donoghue, W. Stamps Howard, Vijay Kumar   +2 more
openaire   +1 more source

WORKPIECE CARRIER

2009
A plurality of discs (7) arranged along a central shaft and having holders (8) uniformly distributed over the circumference, inclined obliquely outwards and intended for workpieces are supported in each case on a ring (5) surrounding the discs (7). The successive rings (5) form an approximately cylindrical cladding which prevents undesired coating of ...
OERLIKON TRADING AG, ESSER STEFAN
openaire   +2 more sources