Results 211 to 220 of about 7,487 (257)
Some of the next articles are maybe not open access.
Modeling regenerative workpiece vibrations in five-axis milling
Production Engineering, 2008During milling—especially of thin-walled components—the dynamic behavior of the workpiece-tool-machine-system influences the milling process and particularly the quality of the resulting workpiece surface. This article focuses on the presentation of a simulation concept for predicting regenerative workpiece vibrations, which combines a finite element ...
Klaus Weinert +3 more
openaire +1 more source
Virtual Five-Axis Flank Milling of Jet Engine Impellers—Part I: Mechanics of Five-Axis Flank Milling
Journal of Manufacturing Science and Engineering, 2008This work is the first of a two part paper on cutting force prediction and feed optimization for the five-axis flank milling of jet engine impellers. In Part I, a mathematical model for predicting cutting forces is presented for five-axis machining with tapered, helical, ball-end mills with variable pitch and serrated flutes.
W. B. Ferry, Y. Altintas
openaire +1 more source
Volume 3: Design and Manufacturing, 2007
Jet engine impeller blades are flank-milled with tapered, helical, ball-end mills on five-axis machining centers. The impellers are made from difficult-to-cut titanium or nickel alloys, and the blades must be machined within tight tolerances. As a consequence, deflections of the tool and flexible workpiece can jeopardize the precision of the impellers ...
W. Ferry, Y. Altintas
openaire +1 more source
Jet engine impeller blades are flank-milled with tapered, helical, ball-end mills on five-axis machining centers. The impellers are made from difficult-to-cut titanium or nickel alloys, and the blades must be machined within tight tolerances. As a consequence, deflections of the tool and flexible workpiece can jeopardize the precision of the impellers ...
W. Ferry, Y. Altintas
openaire +1 more source
Robotic milling : A five axis milling alternative
2019The project was requested to develop a proof of concept system for robotic milling utilizing available small robots in the Applied Engineering Center. The project included procuring a milling spindle and variable frequency drive (VFD) appropriately sized for the spindle.
Miller, Logan, Rice, Zachary
openaire +1 more source
CAx Framework for Planning Five-Axis Milling Processes
2010Given an efficient process, five-axis milling is a productive technology that can help production industries in countries with a high level of workers’ wages to remain competitive on the global market. For planning the required machining processes, engineers have to be supported by methods and tools. In current research at WZL of RWTH Aachen and IPT of
Christian Brecher +2 more
openaire +1 more source
Volume 3: Design and Manufacturing, 2007
This paper presents optimization schemes for the five-axis flank milling of jet engine impellers based on the mechanics model explained in Part I. The process is optimized by varying the feed automatically as the tool-workpiece engagements, i.e. the process, varies along the tool path.
W. Ferry, Y. Altintas
openaire +1 more source
This paper presents optimization schemes for the five-axis flank milling of jet engine impellers based on the mechanics model explained in Part I. The process is optimized by varying the feed automatically as the tool-workpiece engagements, i.e. the process, varies along the tool path.
W. Ferry, Y. Altintas
openaire +1 more source
Journal of Manufacturing Science and Engineering, 2008
This paper presents process optimization for the five-axis flank milling of jet engine impellers based on the mechanics model explained in Part I. The process is optimized by varying the feed automatically as the tool-workpiece engagements, i.e., the process, vary along the tool path.
W. B. Ferry, Y. Altintas
openaire +1 more source
This paper presents process optimization for the five-axis flank milling of jet engine impellers based on the mechanics model explained in Part I. The process is optimized by varying the feed automatically as the tool-workpiece engagements, i.e., the process, vary along the tool path.
W. B. Ferry, Y. Altintas
openaire +1 more source
Five-axis milling of sculptured surfaces of the turbine blade
Aircraft Engineering and Aerospace Technology, 2018PurposeThe purpose of this paper is to determine the influence of a toroidal cutter axis orientation and a variable radius of curvature of the machined contour of sculptured surface on the five-axes milling process. Simulation and experimental research performed in this work are aimed to determine the relationship between the parameters of five-axes ...
Michal Gdula +3 more
openaire +1 more source
A study on the five-axis end milling for sculptured surfaces
KSME Journal, 1995The direction vector of milling cutter for CL-data of five-axis milling is obtained by the fact that the bottom part of the milling cutter rides on free-form surfaces using the z-map method. Since the direction vector is known, CL-data can be transformed to the NC-code with regard to the geometry of the five-axis machine and post-processing.
H. D. Cho, M. Y. Yang
openaire +1 more source
Force Modeling of Five-Axis Microball-End Milling
Journal of Micro and Nano-Manufacturing, 2015This paper presents a five-axis ball-end milling force model that is specifically tailored to microscale machining. A composite cutting force is generated by combining two force contributions from a shearing/ploughing slip-line (SL) field model and a quasi-static indentation (ID) model. To fully capture the features of microscale five-axis machining, a
Chi Xu, James Zhu, Shiv G. Kapoor
openaire +1 more source