High-Speed Machining

Wang, Z.; Rahman, Muhamad Arfauz A

doi:10.1016/b978-0-08-096532-1.01113-4

Cited by 10 publications

(3 citation statements)

References 32 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Triggered images can thus be taken when the tool is engaged and when it is replaced by the counterweight (Figure 3c). Compared to the conventional turning process [14], the cutting conditions were set slightly higher with a cutting speed of v c = 7.7 m s , a cutting depth of a p = 0.5 mm, and a feed speed of v f = 0.75 mm s in order to test the resolution limits with respect to the measuring speed of the measuring system. The corresponding cutting geometry is illustrated in Figure 4.…”

Section: Fem Simulation and Setup Of Simulationmentioning

confidence: 99%

Induction of Highly Dynamic Shock Waves in Machining Processes with Multiple Loads and Short Tool Impacts

2019

View full text Add to dashboard Cite

In order to study the mechanical loads of a workpiece in manufacturing processes such as single-tooth milling, in-process measurements of workpiece deformations are required. To enable the resolution of shock waves due to the mechanical impact of the tool, a novel measurement system based on speckle photography is introduced to measure the dynamic deformations and strains with a high temporal and spatial resolution. The measurement results indicate deformations and strains propagating through the workpiece with the speed of sound triggered by the tool impact (i.e., the tool impact is shown to induce shock waves during milling). Finite element simulations of the workpiece behavior are performed in addition, which support the experimental findings. In the considered case, the dynamic excitation subsides after 300 ms. Hence, in processes with even shorter cyclic multiple loads, the tool encounters an already excited initial state during machining, which needs to be taken into account when precisely modeling the milling process and the resulting workpiece quality. Finally, the measurement results demonstrate that speckle photography in combination with modern high-speed cameras and compact short-pulse lasers provides a deeper understanding of individual manufacturing processes.

show abstract

Section: Fem Simulation and Setup Of Simulationmentioning

confidence: 99%

Induction of Highly Dynamic Shock Waves in Machining Processes with Multiple Loads and Short Tool Impacts

2019

View full text Add to dashboard Cite

show abstract

“…The aim is to ensure that the manufacturing conditions are suitable for achieving the intended design within the specified dimensional tolerances. As the demand for efficient and effective production increases, high-speed cutting (HSC) has emerged as a popular solution [ 1 , 2 , 3 ]. Although high-speed milling and grinding are widely accepted in serial production, HSC turning is still relatively uncommon due to the relatively short continuous cutting times and the lack of a safe and flexible clamping system capable of withstanding high-speed revolutions.…”

Section: Introductionmentioning

confidence: 99%

The Application of Additive Composites Technologies for Clamping and Manipulation Devices in the Production Process

et al. 2023

View full text Add to dashboard Cite

Additive technologies have been widely adopted in various industries. The choice of additive technology and material directly affects the functionality of the manufactured components. The development of materials with better mechanical properties has led to a growing interest in replacing traditional metal components with those manufactured using additive technologies. The application of Onyx as a material comes into consideration, which contains short carbon fibers to increase the mechanical properties. This study aims to experimentally verify the viability of substituting metal gripping elements with nylon and composite materials. The design of the jaws was customized to meet the requirements of a three-jaw chuck of a CNC machining center. The evaluation process involved monitoring the functionality and deformation effects on the clamped PTFE polymer material. When the metal jaws were applied, significant deformation of the clamped material occurred, which varied with the clamping pressure. This deformation was evidenced by the formation of spreading cracks on the clamped material and permanent shape changes in the tested material. Conversely, nylon and composite jaws manufactured using additive technology demonstrated functionality across all tested clamping pressures, without causing permanent deformation of the clamped material, unlike the traditional metal jaws. The results of this study confirm the applicability of the Onyx material and provide practical evidence of the potential for reducing deformation caused by clamping mechanisms.

show abstract

“…Usually, stainless steels undergo certain industrial activities such as heavy machining, welding, and other deformation processes to suit industrial demands of fabrication [2,[11][12][13]. The machining process induces damage at the sub-surface and extending to the surface level [14]. These result in rougher surfaces, generation of residual stresses, and formation of defect density [2,12,15].…”

Section: Introductionmentioning

confidence: 99%

Studies of Low-Temperature Sensitization after Sub-Surface Damage Evolution in Austenitic Stainless Steel

Srinivasan

2021

Metallogr. Microstruct. Anal.

View full text Add to dashboard Cite

The specimens of austenitic stainless steels were machined to different strain rates (105 s −1 , 1050 s −1 , 1500 s −1 , 2100 s −1 ). These specimens were subjected to low-temperature sensitization (LTS) heat treatment. The LTS treatment was carried out at 475℃ and 575℃ for 24 h. Further, oxalic acid, double-loop electrochemical potentiokinetic reactivation (DL-EPR) were carried out. As-machined specimens were subjected to surface roughness measurements, optical microscopy, electron backscattered diffraction (EBSD), and Fourier transform infrared spectroscopy (FTIR) imaging measurements. Machined specimen exhibited more difficulty in passivation than the as-received specimen. The complete surface statistics were extracted.The specimens machined at a strain rate of 2100 s −1 were exhibited a higher degree of sensitization (DoS) at LTS of 575℃ and 475℃ for 24 h, respectively, than other specimens. It was found that specimens machined at a higher strain rate produced smoother roughness. FTIR imaging was used to extract the signal intensity of chromium oxide (Cr 2 O3) peak. Detected Cr 2 O3 peak/signal was strong for the specimen that exhibited lower DoS as estimated from FTIR-imaging.

show abstract

High-Speed Machining

Cited by 10 publications

References 32 publications

Induction of Highly Dynamic Shock Waves in Machining Processes with Multiple Loads and Short Tool Impacts

Induction of Highly Dynamic Shock Waves in Machining Processes with Multiple Loads and Short Tool Impacts

The Application of Additive Composites Technologies for Clamping and Manipulation Devices in the Production Process

Studies of Low-Temperature Sensitization after Sub-Surface Damage Evolution in Austenitic Stainless Steel

Contact Info

Product

Resources

About