Effect of Water-Based Nanolubricants in Ultrasonic Vibration Assisted Grinding . by Mir Majid Molaie. 1,*, Ali Zahedi. 2 and . Javad Akbari. 1. 1. Center of Excellence in Design, Robotics and Automation, Department of Mechanical Engineering, Sharif University of Technology, Azadi Ave., 1458889694 Tehran, Iran. 2.
Ultrasonic-vibration-assisted grinding (UVAG) or rotary ultrasonic machining has been investigated both experimentally and theoretically. Effects of input variables on output variables in UVAG of brittle materials and titanium (Ti) have been studied experimentally. Models to predict the material removal rate in UVAG of brittle materials have ...
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Ultrasonic vibration assisted through-feed Centerless Grinding using surface grinder
Because of the hard-brittle character of ceramics, the ultrasonic vibration grinding method was used in the experiment. And the effects of ultrasonic vibration on the subsurface damage were analyzed in this paper. The experiment indicates that the frequency of 35 KHz will be more suitable for ultrasonic grinding ceramics, and under this frequency the damage layer …
Study on Ultrasonic Vibration Effects on Grinding Process of Alumina Ceramic (Al2O3) Javad Akbari; Hassan Borzoie; Mohammad Hossein Mamduhi. Nowadays, engineering ceramics have significant applications in different industries such as; automotive, aerospace, electrical, electronics and even martial industries due to their attractive physical and ...
Superimposing horizontal ultrasonic vibration onto the workpiece showed a 36% normal force reduction in dry grinding, but a 21% reduction in the tangential force. Improvements in the material removal process in UAG were attributed to the variation of the cutting mechanism in UAG, which was changed into a multiple-impact operation resulting in a ...
Rotary longitudinal–torsional coupled ultrasonic vibration-assisted grinding (LTUAG) is a new manufacturing method that can improve the grinding ability of silicon carbide ceramics. However, compared with longitudinal ultrasonic vibration-assisted grinding (LUAG), the role of torsional vibration in the grinding process is unclear. In this study, an effective method for …
Ultrasonic vibration-assisted grinding has been used for precision machining of brittle materials because of the fact that the average cutting force and cracks propagation can be significantly reduced [ 7, 8, 9 ]. The effect of the process parameters on the process performances has been investigated experimentally [ 10, 11, 12 ].
The advantages of small volume, feel is good, low vibration, low noise, and the advantages of speed and torque. It can use different jig for grinding operation, can clamping file or the grinding tools, such as the grooves in the mold or hardware products, R …
The invention claimed is: 1. A multi-angle two-dimensional ultrasonic vibration assisted nanofluid micro-lubrication grinding device, comprising a workpiece fixture used for clamping a workpiece and a grinding wheel used for grinding the workpiece, wherein the workpiece fixture is connected with a two-dimensional ultrasonic vibration device to maintain the sharpness of …
In ultrasonic vibration assisted grinding (UAG) along the axial direction, the machining process of an abrasive grit is introduced in this paper. During the internal UAG, the critical speed is ...
The ultrasonic vibration assisted micro end grinding of silica glass is conducted on a manual developed machine tool, as is shown in Figure 7, which is built for the purpose of realizing three crucial motions in UAMEG: workpiece ultrasonic vibration, high speed grinding wheel rotation, and high-accuracy feed motion.
10%Ultrasonic vibration can be applied for grinding of difficult to cut materials, such as titanium, ceramics, etc., because the ultrasonic vibration in longitudinal direction can cause reduction of cutting temperature and tool wear.
In ultrasonic vibration assisted grinding (UAG) along the axial direction, the machining process of an abrasive grit is introduced in this paper. …
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.
grinding [8], ultrasonic machining [9], ultrasonic vibration-assisted machining [10], and rotary ultrasonic machining ( RU M) [1 1], have been introduced to mitigate the abov e problems.
Ultrasonic vibration can be applied for grinding of difficult to cut materials, such as titanium, ceramics, etc., because the ultrasonic vibration in longitudinal direction can cause reduction of ...
Jiang presented ultrasonic vibration assisted grinding (UAG) is one of the impactful machining methods for processing hard and brittle materials [ 4 ].Sun introduced that ultrasonic energy intervention can reduce cutting force, improve material removal rate and machining quality [ 5 ].
In this paper, a novel ultrasonic vibration assisted grinding (UVAG) technique was presented for machining hard and brittle linear micro-structured surfaces. The kinematics of the UVAG for micro-structures was first analyzed by considering both the vibration trace and the topological features on the machined surface.
Because of the changes in cutting conditions and ultrasonic vibration status, the proportion of multiple material removal modes are of uncertainty and complexity in ultrasonic vibration-assisted grinding of optical glass. Knowledge of the effect of machined surface composition is the basis for better understanding the influence mechanisms of surface …
Ultrasonic machining is a subtractive manufacturing process that removes material from the surface of a part through high frequency, low amplitude vibrations of a tool against the material surface in the presence of fine abrasive particles. The tool travels vertically or orthogonal to the surface of the part at amplitudes of 0.05 to 0.125 mm (0.002 to 0.005 in.).
The actual vibration amplitude (AVA) during ultrasonic vibration-assisted face grinding (UVAFG) is an essential parameter that affects grinding force and surface quality. However, an effective method for the real-time measurement of AVA during grinding remains unavailable, hindering research on UVAFG.
The vibration displacement frequency of the ultrasonic vibration oscillator system is close to the vibration modal frequency, and the amplitude in Y direction at the tool tip of the oscillator system is 22.18 μm, which is consistent with the expected result of the designed ultrasonic vibration de-gluing device.
The ULTRASONIC technology from DMG MORI enables the economical machining of complex workpiece geometries in demanding high-tech materials like e. g. ceramics...
ultrasonic vibration. Furthermore,theuseof ultrasonic vibration also changes the kinematic motions of the grains in a way that the ultrasonic vibration is super-imposed to the conventional rotation of the grinding wheel. Side-surface formation A single abrasive–workpiece interaction model for surface grinding and a schematic model for microslot
Separate characteristic of the tangential ultrasonic vibration assisted grinding (TUAG) machining is analyzed based on TUAG process, and a …
The design of a novel ultrasonic vibration apparatus and the experimental investigation of ultrasonic vibration assisted grinding of SiC micro-structures are presented. The experimental results show that the application of ultrasonic vibration can enhance the ground surface quality and improve the edge features of micro-structures.
Grinding experiments on surface quality of nanoZrO2 ceramic are carried out using diamond grinding in different condition, both with and without ultrasonic vibration. Experimental results show the surface quality after two-dimensional ultrasonic assisted grinding is superior to that after common grinding.
Ultrasonic vibration precision grinding combines ultrasonic vibration with ordinary grinding. The application of ultrasonic vibration can get a high precision surface and high removal of materials [4-6]. The ELID mirror grinding technology can be used to realize the combination of the electrolytic dressing and polishing of the grinding wheel.
Ultrasonic vibration-assisted grinding (UVAG) as a newly-developed complex machining technology, exhibiting grinding and ultrasonic vibrating characteristics [ [8], [9], [10] ], has been widely used to machine difficult-to-cut materials, such as nickel-based superalloy [ 11, 12 ], titanium alloy [ 13 ], and composite materials [ 14 ].
Ultrasonic vibration-assisted grinding (UVAG) is regarded as a superior method for the fabrication of ceramic dentures, due to its outstanding performance in hard and brittle materials' machining. The surface roughness of dentures has a critical effect on the bonding and wear performance between dentures and natural teeth. Accomplishing the prediction of …
An ultrasonic vibration composite grinding tool is disclosed wherein a plurality of small-sized grinding wheels are arranged for carrying out grinding of a ground material while applying vibration to the ground material, to thereby ensure stable operation of the grinding tool to accomplish efficient grinding of the ground material even when the ground material is large …
Research on the process mechanism of ultrasonic vibration-assisted grinding had been carried out by some researchers. H. Wang et al. [] studied the material removing process, single grain trajectory model, and tool-workpiece interactions considering many process parameters with elliptical ultrasonic vibration-assisted grinding.Cutting force model was …
Subsurface cracks in ultrasonic-vibration-assisted grinding (UVAG) of optical glasses often exhibit diverse forms and proportions. Due to the variety of loads involved in crack formation and ...
Strengthening the wheel ultrasonic vibration decreased the specific grinding energy, demonstrating that the ultrasonic vibration benefits the reduction in the energy consumption. (2) The ultrasonic vibration contributed to the work-surface finish improvement; the larger the A p-p was, the work-surface roughness became better.
To overcome these technological challenges, a new ultrasonic vibration-assisted grinding (UVAG) manufacturing method has been developed and employed in this research. The ultimate aim of this study is to develop a new cost-effective manufacturing process relevant to eliminate edge chippings in grinding of bio-ceramic materials.
Ultrasonic vibration assisted grinding (UVAG), as a novel effective machining process for hard and brittle materials, is introduced into directly machining sintered dental zirconia ceramics.
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 parameters on grinding forces and surface …
10%Ultrasonic vibration–assisted grinding (UVG) has been accepted as an effective method for processing hard and brittle materials with multiple benefits in terms of reducing grinding force, grinding wheel wear, and subsurface damage as well as improving surface quality and increasing material removal rate [ 4, 5, 6, 7 ].