Results 31 to 40 of about 13,005 (292)

Theory and experimental research on spiral bevel gear by double-side milling method

open access: yesMechanics & Industry, 2021
In this paper, a double-side milling method on spiral bevel gear is proposed. First, according to the tooth taper processed by double-side milling method, the influence of dedendum angle on the tooth taper was researched.
Geng Longlong   +4 more
doaj   +1 more source

Holographic generation of highly twisted electron beams [PDF]

open access: yes, 2014
Free electrons can possess an intrinsic orbital angular momentum, similar to those in an electron cloud, upon free-space propagation. The wavefront corresponding to the electron's wavefunction forms a helical structure with a number of twists given by ...
Boyd, Robert W.   +5 more
core   +2 more sources

Analytical method for calculating scallop height of helical toroidal cutter in five-axis milling [PDF]

open access: yesSongklanakarin Journal of Science and Technology (SJST), 2020
This paper proposed a method to determine the path scallop of toroidal cutter in five-axis milling during a complex surface machining. A mathematical algorithm was developed by taking into consideration the impact of the helical angle and inclination ...
Hendriko Hendriko
doaj   +1 more source

Helical milling for making holes on carbon fiber reinforced polymer [PDF]

open access: yesThe International Journal of Advanced Manufacturing Technology, 2022
Abstract Carbon fiber reinforced polymer (CFRP) is widely used in various fields due to its excellent properties. However, machining defects such as delamination and burr are still the key issues constraining high-quality hole making on CFRP.
Chunjie Su   +5 more
openaire   +1 more source

Effects of Cooling Conditions and Machining Parameters on Thrust Force, Surface Roughness, and Hole Quality in Machining of Fiber Metal Laminates [PDF]

open access: yesMechanics of Advanced Composite Structures
The machining of Fiber Metal Laminates (FMLs), such as glass laminate aluminum reinforced epoxy (GLARE), presents significant challenges due to the varying mechanical and thermal properties of its constituent materials.
Meisam Khademitab   +2 more
doaj   +1 more source

An innovative study on high-performance milling of carbon fiber reinforced plastic by combining ultrasonic vibration assistance and optimized tool structures

open access: yesJournal of Materials Research and Technology, 2023
At present, the aviation industry puts forward higher requirements for high-performance milling technology of carbon fiber reinforced plastic (CFRP).
Zhefei Sun   +7 more
doaj   +1 more source

The self-excitation damping ratio: A chatter criterion for time-domain milling simulations [PDF]

open access: yes, 2004
Regenerative chatter is known to be a key factor that limits the productivity of high speed machining. Consequently, a great deal of research has focused on developing predictive models of milling dynamics, to aid engineers involved in both research and ...
Altintas   +15 more
core   +1 more source

Method of determining the process applied for feature machining : experimental validation of a slot [PDF]

open access: yes, 2007
In this paper, we will be evaluating the "manufacturability" levels for several machining processes of "slot" feature. Using the STEP standard, we will identify the slot feature characteristics. Then, using the ascendant generation of process method, we
D'ACUNTO, Alain, MARTIN, Patrick
core   +6 more sources

Side Milling of Helical End Mill Oscillated in Axial Direction with Ultrasonic Vibration

open access: yesInternational Journal of Automation Technology, 2019
This paper is focused on the cutting performance in the side milling of a small-size end mill with vibrations generated by an ultrasonic vibration spindle apparatus in the axial direction with a helix edge. In side milling with ultrasonic vibration in the rotational direction, the mean value of the cross-sectional chip area per cutting time decreases ...
Hiroyasu Iwabe   +3 more
openaire   +1 more source

Chip formation and surface integrity investigation considering the minimum uncut chip thickness in micro-helical milling

open access: yesJournal of Materials Research and Technology
In micro-helical milling, the minimum uncut chip thickness (MUCT) plays a crucial role in governing chip formation and surface integrity. However, its precise determination and underlying influence mechanisms in micro-helical milling remain ...
Yang Yao   +6 more
doaj   +1 more source

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