An attachable electromagnetic-energy-harvester driven wireless vibration-sensing system for monitoring milling-processes and cutter-wear/breakage-conditions is demonstrated. The system includes an electromagnetic energy harvester, three single-axis Micro Electro-Mechanical Systems (MEMS) accelerometers, a wireless chip module, and corresponding circuits. The harvester consisting of magnets with...

One of the key components in making Industry 4.0 a reality includes machines that are able to produce required products and faster, more precisely flexibly than ever before based on so-called reverse engineering technology. Reverse is technology enables rapid acquisition data for CAD, CAM, CAE, thereby greatly shortening development, design fabrication parts. In general, analogue converted digi...

Cutter performance evaluation is important for shield TBM during the design and refurbishment stage. To face challenges of choosing proper cutters tunneling in complex condition, according to concept parameter profile analysis, a systematic method was proposed. In this novel method, by comparing with their expected best value corresponding unacceptable limit, all selected parameters can be synt...

To address the problem of poor stability ultrasonic machining wave-absorbing honeycomb material, this study takes cutting material with a disc cutter as research object and establishes multi-degree-of-freedom mathematical model system based on relative positions tool, motion characteristics tool. On basis, modal analysis cell wall plate is carried out to draw Lobe diagram stability, process exp...

Abstract: Plain Milling is one of the progressive enhancements of miniaturized technologies which have wide range of application in industries and other related areas. Plain milling cutters are widely used in roughing and finishing of parts. The milling cutter geometry and distribution of inserts on the cutter body vary significantly in industry depending on the application. This paper presents...

This article refers to:RETRACTED ARTICLE: Modelling and simulation of surfacing welding remanufacturing for tunnel boring machine disc cutter

BACKGROUND Cervical disc arthroplasty is regarded as a promising treatment for myelopathy and radiculopathy as an alternative to cervical spine fusion. On the basis of 2-year clinical data for the PRESTIGE(®) Cervical Disc (Medtronic, Memphis, Tennessee), the Food and Drug Administration recommended conditional approval in September 2006 and final approval in July 2007; however, relatively litt...

With the rapid development of high-precision-device technology, new demands are put forward for micro milling. The size effect and low cutting energy milling make process expensive difficult, especially Ti-6Al-4V alloys. wear micro-milling cutter lacks corresponding international standards its mechanism is complex. In this paper, four kinds cutters with different states were obtained by designi...

We examined 13 Beall model 104 prostheses recovered at surgery or autopsy 10 to 84 1/2 months after insertion and observed the pattern of prosthesis wear. We defined wear as "mild" when the disc was notched but neither the metal of the struts was exposed not the cloth seat torn. In "moderate" wear the disc was notched, the Teflon coating of the struts was worn away exposing the underlying meta...