the grinding temperature of U-NJMC was decreased by 33.5% and 10.0%, respectively. These results showed that U-NJMC provides a novel approach for clinical surgical micro-grinding of biological bone. KEYWORDS micro-grinding, biological bone, ultrasonic vibration (UV), nanoparticle jet mist cooling (NJMC),
Fig. 1 (a) illustrates the principle of ultrasonic-shoe centerless grinding where an ultrasonic shoe and a blade are used to support the workpiece and feed it toward the grinding wheel, instead of using a regulating wheel as in conventional centerless grinding (see Fig. 1 (b)). In the former case (see Fig. 1 (a)), the clockwise workpiece …
Ultrasonic vibration-assisted micro-end grinding (UAMEG) is a promising processing method for micro-parts made of hard and brittle materials. Grinding force is one of the most important parameters which can synthetically reflect the grinding process. So, it is a key issue to establish a model for the reliable prediction of grinding force in …
Ultrasonic vibration assisted micro end grinding (UAMEG) is a promising processing method for micro parts made of hard and brittle materials. First, the influence of ultrasonic assistance on the mechanism of this processing technology is theoretically analyzed. Then, in order to reveal the effects of ultrasonic vibration and grinding …
Ultrasonic-assisted grinding has been increasingly investigated for its advanced machining capability for hard-to-machine materials. Ultrasonic-assisted micro end grinding (UAMEG) is a promising ...
Ultrasonic vibration-assisted grinding (UAG) is a non-conventional machining process, in which ultrasonic vibration is imposed on the grinding wheel or workpiece [].The superimposition of ultrasonic vibration can improve the grinding performance and the surface quality such as: reducing surface roughness [] and …
The ULTRASONIC-technology allows an economical grinding, milling and drilling of hard and brittle Advanced Materials with up to 50% reduced process forces. With the …
The cutting force in ultrasonic vibration side grinding (UVSG) of brittle materials is of significance for the machined quality. However, the micro-interaction mechanism between abrasive grits and workpiece remains a significant issue in terms of the research on cutting forces in the brittle material grinding due to the stochastic …
Investigation on grinding force and machining quality during rotary ultrasonic grinding deep-small hole of fluorophlogopite ceramics. Int. J. Adv. Manuf. Technol., 104 (2019), pp. 2815 ... Study on effect of ultrasonic vibration on grinding force and surface quality in ultrasonic assisted micro end grinding of silica glass. Shock …
An ultrasonic-vibration-assisted micro-grinding device with a mounted 120# cylindrical grinding head was utilized for processing the bone surface to achieve a …
In this paper, the state of art of ultrasonic-assisted machining technologies used for fabrication of micro/nano-textured surfaces is reviewed. Diamond machining is the most widely used method in industry for manufacturing precision parts. For fabrication of fine structures on surfaces, conventional diamond machining methods are competitive …
Micro-rod YAG single crystals are the preferred laser crystals for laser gain mediums with a high power. However, brittle fracture and crack damages are easy to occur in the grinding process of micro-rod brittle crystals due to their large length-to-diameter ratio, high brittleness, and high hardness. In this work, the modal, frequency, and harmonic …
* The research work on Ultrasonic Assisted Grinding is carried out as part of the "Industrielle Gemeinschaftsforschung", sponsored by funds of the "Bundesministerium ftir Wirtschaft". ... 287-293 293 Micro scratching by the grit causes lateral cracks the process resulting in a catastrophic tool failure. For inside the crack zone. more detailed ...
Request PDF | A Micro Ultrasonic Grinding Device with Very High Frequency and its Application | This paper deals with the development of an extremely high frequency ultrasonic transducer of ...
Ultrasonic vibration-assisted micro end grinding (UAMEG) is a promising processing method for microparts made of hard and brittle materials. The surface quality of the workpiece in UAMEG is important, as it influences the performance of the finished part to a great extent. However, the surface finish is governed by many factors, and its …
micro-grinding tests on different hard and brittle materials, in which fine slots with 0.1-mm width and high aspect ratio of 15 were produced. The lowest surface roughness obtained ... easier for ultrasonic-assisted grinding to achieve material ductile region removal. In Wang and Lin's[12] research
Ultrasonic micro-grinding is a viable alternative or adjunct to planetary and centrifugal ball milling in the application of particle size reduction, when processing superfine ceramic, alumina, and metal oxide slurries. Equipment of choice for this application is, depending on the volume, either the
1. Introduction. Grinding is an often used and predominant finishing process for achieving high-quality surfaces to meet specific requirements. However, Uhlmann and Spur (1998) showed that conventional grinding (CG) for hard and brittle materials usually brings about cracks and sub-surface damage owing to the large grinding forces …
Whether you need 5-axis grinding of ceramics, drilling of glass, insertion of micro-holes in workpieces, or a combination of all of these – the ULTRASONIC series provides the …
Ultrasonic micro-grinding is a viable alternative or adjunct to planetary and centrifugal ball milling in the application of particle size reduction, when processing superfine ceramic, …
Due to the lower tensile strength of carbides, grinding under compressive force has made it possible to grind to a diameter of 11 pm with a length of 160 pm. Keywords: Ultrasonic vibration grinding, Micro tool, Carbide 1 INTRODUCTION Recently the high integration and miniaturization of various industrial and living goods are …
Ultrasonic vibration-assisted micro-end grinding (UAMEG) is a promising processing method for micro-parts made of hard and brittle materials. Grinding force is one of the most important parameters ...
Ultrasonic-assisted micro-grinding with electroplated diamond wheels 2nd report: Effect of ultrasonic vibration on workpiece removal in grinding wheel end Article Jan 2010
An ultrasonic vibration–assisted micro-milling with horizontal vibration of workpiece is investigated in this article. ... Micro-grinding has a wide application for …
Micro-grinding with a spherical grinding head has been deemed an indispensable method in high-risk surgeries, such as neurosurgery and spine surgery, where bone grinding has long been plagued by ...
The truing and subsequent grinding experiments revealed that the radius of 11.63 μm achieved by the micro-grinding process was slightly larger than the 8.62 ... Studies show that in grinding hard and brittle materials, rotary ultrasonic grinding (RUG) outperforms conventional grinding (CG). In order to realize the application of a large …
The rotating ultrasonic-assisted grinding (RUAG) experiment of the conical grinding wheel generated the intermittent pit-shaped micro-texture on the surface of the workpiece, reducing thermal ...
By calculating the adjacent abrasive trajectories, Zhang et al. [55] modelled and simulated the abrasive velocity and acceleration's, and the results showed that ultrasound-assisted micro-end grinding has good performance in the control of grinding force and can improve the surface finish after machining.
This overview covers the evolution of typical hardware systems used to achieve vibratory motions from the one-dimensional UVAM to three-dimensional UVAM, …
This paper deals with the development of an extremely high frequency ultrasonic transducer of magnetostrictive type with vibration frequency of up to 400kHz, and its application to ultrasonic grinding. This transducer provides longitudinal, torsional and complex modes of vibration. The application of this transducer to grinding or boring …
Glass is a widely used material in key fields such as Micro-Electro-Mechanical Systems (MEMS) due to its excellent properties. The existing non-traditional glass machining methods have problems such as high pollution, difficult operation, and poor sustainability, this article utilizes the effective combination of electrochemical discharge …
Rotary ultrasonic grinding machining (RUGM) is regarded as the most powerful machining method for engineering ceramic. However, there are micro-cracks on the machined surface inevitably for lower fracture roughness of material. As part of surface integrity, effective parameter and unified criterion are not proposed for micro-crack …
Ultrasonic-assisted micro end grinding (UAMEG) is a promising technology to improve machining performance of conventional micro end grinding. Interrupted …
