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A study on machining CFRP composites by rotary ultrasonic machining (RUM) has been carried out to explore the influence of process parameters on machining performance and to determine the optimal cutting force value. The design approach was used to determine the effects of each of these characteristics independently and the …
Rotary ultrasonic machining (RUM) is a relatively low cost and environmentally benign process for machining of advanced ceramics. Much effort has been made to theoretically and experimentally investigate material removal rate, surface roughness, and tool wear in RUM. However, there is no report on systematic study of …
This paper presents a preliminary study about effects of ultrasonic vibration on machined surface and subsurface damages in rotary ultrasonic machining (RUM). The surface and subsurface damages are compared for machining of dental ceramics (Al2O3) with and without ultrasonic vibration. The surface chippings are evaluated and …
Rotary ultrasonic machining (RUM) is a mechanical type non-traditional hybrid machining process which has been utilized …
Rotary ultrasonic machining (RUM), a hybrid nontraditional cutting process, combines the material removal from the traditional grinding and the ultrasonic machining [].RUM is an efficient and effective method for hole making of carbon fiber–reinforced plastic (CFRP) composites or surface machining of CFRP composites [].As shown in Fig. 1, in …
In this research work, the comparison of machining of NHC structures with and without ultrasonic vibrations was studied. Development of FEA model was attributed to the research works of Jaafar et al. [], Zarrouk et al. [], Ahmad et al. [] and Xiang et al. [], while the comparison of FEA results was made with the experimental work of Ahmad et …
Currently, the understanding of ultrasonic machining technology is still evolving, and there is no unified standard or specification both domestically and internationally. The conventional ultrasonic machining system typically consists of an ultrasonic drive controller, ... while the latter is generally used in rotary ultrasonic …
Rotary ultrasonic-assisted machining (RUAM) processes have been recognized as leading, non-traditional, high-precision machining processes that have …
1. Introduction. Rotary ultrasonic machining (RUM) has been demonstrated to be a superior non-traditional machining method for difficult-to-machine materials such as glasses, ceramics, and superalloys [1], [2], which superimposes an ultrasonic frequency vibration on a rotary cutting tool (such as drilling tools, milling tools).The high-frequency …
2. Ultrasonic machining process (USM) The productivity of USM process is generally considered to be very low; however, its uniqueness to deal with hard and brittle materials irrespective of their electrical/chemical properties makes this process a viable alternate of other advanced machining processes [1].Low-ductile materials can also be …
1. Introduction. Rotary ultrasonic machining (RUM) is a high-performance process for difficult-to-cut materials. It applies ultrasonic tool vibration to improve the material removal efficiency and surface quality [1], [2], [3] and reduce machining-induced defects [4], [5], [6].In recent years, the increasing application demand for difficult-to-cut …
Ultrasonic machining (USM) is a mechanical material removal process used to erode holes and cavities in hard or brittle workpieces by using shaped tools, high-frequency mechanical motion, and an abrasive slurry. ... research work reported on rotary mode USM, hybrid USM, process capabilities of USM have been extensively reviewed in …
Rotary ultrasonic machining (RUM) is mostly used in brittle material drilling. Few researchers have focused on the milling application by RUM till now since the milling process is categorized as a horizontal machining mode, whose motion is perpendicular to the longitudinal kinetic energy supplied by the RUM. Besides, the most important ...
In 1964, the British scholar Legge proposed an ultrasonic machining method without abrasive slurry, which combined traditional …
A novel rotary ultrasonic texturing (RUT) technique is proposed to fabricate hybrid periodic micro/nano-textures on flat surfaces. Different from conventional rotary ultrasonic machining, a tailored one-point diamond tool was manufactured and employed for RUT on surfaces of electroless nickel–phosphorus (Ni–P) plating.
Ultrasonic machining (USM) is a mechanical material removal process used to erode holes and cavities in hard or brittle workpieces by using shaped tools, high …
The rotary ultrasonic machining (RUM) is a mechanical manufacturing process by material removal which is based on the coordination of three motions of the cutting tool, namely, the feed motion along the OY axis characterized by the feed rate V f, the rotational motion around the OZ axis characterized by a spindle speed n and the …
Rotary ultrasonic machining (RUM) is a mechanical type of nontraditional hybrid machining process that has been utilized potentially to machine a wide range of …
Rotary ultrasonic machining (RUM)is a new machining technology developed in recent years, which has unique advantages in precision and efficient machining of hard and brittle materials [1,2,3,4,5].In the RUM system, the ultrasonic vibrator composed of ultrasonic transducer, horn, and machining tool vibrates …
About this book. This book covers the process and conditions of Rotary ultrasonic machining (RUM) of hard materials and summarizes the recommendation of proper machining parameters. The optimum …
Rotary ultrasonic machining (RUM) is a hybrid machining process that is considered suitable for hole production in hard and brittle materials [7]. It combines the material removal mechanisms of diamond grinding and ultrasonic machining. ... They were manufactured to the same specifications with the same equipment. Even so, …
Therefore, rotary ultrasonic micro-machining (RUμM) is investigated to conduct the surface micro-machining of brittle materials. Due to the small diameter …
ULTRASONIC Machining: Advantages of ultrasonic technology. Superimposing a longitudinal ultrasonic vibration on the rotating tool reduces the process forces by up to 50 percent during machining. Depending on the requirements, this could make it possible to increase feed rates, improve surface quality, minimize wear and tear of the tool, and ...
In 1964, the British scholar Legge proposed an ultrasonic machining method without abrasive slurry, which combined traditional ultrasonic machining with grinding machining; this method proved efficient and improved the material removal rate over traditional ultrasonic machining, 3 as shown in Figure 1.When the cutting tool for …
Finally, it is recommended that Chemical assisted Rotary ultrasonic machining is having a vibrant future. 4. Conclusion. In the experimental study, a new machining technique has been proposed named as 'Chemical assisted Rotary ultrasonic machining (CRUM)'. Using CRUM, the results and mechanism hole surface integrity …
A Review of Process Parameters of Rotary Ultrasonic Machining. By Jaspreet Singh, Chandandeep Singh, Kanwaljit Singh. Book Modern Hybrid Machining and Super …
This book covers the process and conditions of Rotary ultrasonic machining (RUM) of hard materials and summarizes the recommendation of proper machining parameters. The optimum conditions were applied for cutting edge preparation of CBN cutting inserts. The results presented in the book show that RUM is able to create controlled cutting edge ...
Highlights A power consumption measurement method in rotary ultrasonic machining (RUM) is proposed. Effects of ultrasonic power, tool rotation speed, feedrate, and type of CFRP on power consumption are investigated. Power consumption percentages of each component are studied. Ultrasonic power supply in RUM system is not the …
In ultrasonic machining, a tool vibrating longitudinally at 20 kHz to 30 kHz with an amplitude between 0.01 mm to 0.06 mm is pressed onto the work surface with a light force. As the tool vibrates with …
Among the non-traditional machining processes proposed for hard-brittle materials, rotary ultrasonic machining ... The specifications of the diamond tool together with the process conditions of the RUM/CG machining tests are tabulated in Table 1. The machining coolant was water-based synthetic solution with the soluble type dilution of 8%.
The maximum spindle speed of the machining center was 8,000 rpm. SY-2000 ultrasonic equipment was used to provide ultrasonic power with vibration frequency of 30 kHz. It provided electrical signal from ultrasonic generator, then converted into high-frequency mechanical vibration by transducer and provided vibration energy to cutting …
Cutting force is the predominant output variable in rotary ultrasonic machining (RUM). It dictates other output variables, such as tool wear, cutting temperature, edge chipping, etc. It is desirable to develop a mechanistic model to predict cutting force and reveal the underlying cutting tool-workpiece interaction in RUM. Numerous …
In rotary ultrasonic machining, a review of the material removal methods, a description of the operation, the rate of material removal, and problems with tool wear are discussed. Based on the literature studied, the experimental results obtained for machining of advanced materials such as composites, silicon, advanced glass, CFRP, titanium, and ...
An approach to modeling the material removal rate (MRR) during rotary ultrasonic machining (RUM) of ceramics is proposed and applied to predicting the MRR for the case of magnesia stabilized zirconia. The model, a first attempt at predicting the MRR in RUM, is based on the assumption that brittle fracture is the primary mechanism …
However, it is still desirable to develop more cost-effective machining processes for titanium alloys. In the past, Rotary Ultrasonic Machining (RUM) was used successfully to machine various hard-to-machine materials. Table 1 summarises the reported materials that were machined by RUM. Table 1 Reported materials that have been machined using RUM