Ultrasound-assisted grinding, milling, and drilling using machines from DMG MORI's ULTRASONIC series now make it possible to achieve short processing times, high productivity, and accuracy in the production and machining of advanced materials, including ceramics, glass, corundum, carbide, and fiber-reinforced materials (composites).
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An additional difficulty in milling thin-walled structures is the reduced rigidity of the workpiece—which also affects vibration during machining. We have compared the vibration signal for different approaches to machining thin-walled components with vertical walls made of Ti6Al4V titanium alloy and Inconel 625 nickel alloy.
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The main aim of the paper is to follow the wearing process of the micro-milling tool during machining of ceramics and to compare it in an offline mode against the …
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When using slender end mills for deep cavity milling on CNC machines, plunge milling is often employed. This technique involves axial feeding of the tool, similar to drilling, when machining deep …
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One of the aims is to follow the wearing process of the micro-milling tool during machining of ceramics and to compare it in an offline mode against the …
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Due to the poor machinability of SiC f /SiC parts in machining, many problems are caused, such as low machining efficiency, poor machining quality and high processing cost, which seriously limit its manufacturing and application. A novel process ultrasonic vibration assisted milling with laser ablation pretreatment (UVAMLAP) was proposed …
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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 …
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It is necessary to evenly smear Vaseline between the specimen and the vibrating block to effectively transmit ultrasonic vibration. Thus, both CM and UVAM experiments can be carried out on a universal machining center or milling machine without improving machine tools. Download: Download high-res image (552KB) Download: …
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Proceedings of the Institution of Mechanical Engineers Part B Journal of Engineering Manufacture, 2014, 229(9). [12] Pei Z J, Ferreira P M, Kapoor S G, et al. Rotary ultrasonic machining for face milling of ceramics[J]. International Journal of Machine Tools and Manufacture, 1995, 35(7): 1033-1046. [13]
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Milling general tolerance of ±.03, can achieve ±.01 with a surface finish of N4/N5. CNC Milling bed capacity of 1000mm in X and 510mm in Y. CNC Milling spindle speed of 12,000 rpm; CNC Milling and turning machines are all equipped with synchronized rigid tapping for perfect internal threads; CNC Turning capabilities of 250mm diameter with ...
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In view of the time-varying dynamic characteristics of thin-walled milling, an optimization method of thin-walled milling control parameters based on the ANFIS system is proposed. Firstly, the control system strategy design and equipment selection construction were carried out, and the fuzzy inference model was built based on matlab platform; …
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Applying the novel feature selection technique of the authors, the basis for the vibration based micro-milling tool condition monitoring for ceramics cutting is presented for different toolpath ...
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2. Kinetic analysis and removal mechanisms of ultrasonic vibrations in SiCp/Al composites. This section provides an overview of the changes in the properties of SiCp/Al composites under ultrasonic vibration stretching (UVS), ultrasonic vibration-assisted scratching (UVAS), and the corresponding traditional stretching (TS) and …
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The anisotropy, heterogeneity, and high hardness of C f /SiC composite bring great difficulties to its efficient and high-quality processing. Ultrasonic vibration-assisted milling (UVAM) has been shown to positively affect the machining quality of C f /SiC. This work focuses on the effect of ultrasonic amplitude on 3D needle-punched C f …
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Vibration-assisted micro milling is a promising technique for fabricating engineered mi-cro-scaled surface textures. This paper presents a novel approach for theoretical modeling of three-dimensional (3D) surface textures produced by vibration-assisted micro milling. The proposed model considers the effects of tool edge …
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In this work, ultrasonic vibration of tool electrode was used to improve the processing efficiency of ceramic materials. The effect of ultrasonic vibration on the …
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Milling. Milling is a ceramic machining technique that uses rotating cutting tools to remove material from the ceramic workpiece. It is suitable for producing complex shapes, pockets, and slots. ... Machine Setup and Vibration Control. Machine setup and stability are important factors in ceramic machining. Ensuring proper alignment, rigidity ...
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Because sometimes the bottom of the milling cutter was used to machine the zirconia ceramics, as the milling process continued, the width of the machined grooves on the workpiece surface decreased gradually, from 906 μm after milling 1 min to 823 μm after milling 3 min, and finally to 672 μm after 7 min [].This deviation indicates that tool …
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A review of ultrasonic vibration-assisted machining (UVAM) systems, kinematics, cutting characteristics, and processing properties for advanced materials. …
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In UVAG, grinding force is an important factor. It has a significant impact on machine vibration, tool wear, grinding temperature, and quality . Alumina ceramics are difficult to process due to their high hardness and poor fracture toughness. ... An analytical approach on stochastic model for cutting force prediction in milling ceramic matrix ...
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In the milling process, the spindle vibration response is an important factor affecting the machining quality and accuracy. In this article, the mechanism of cutting vibration coupling is analyzed, and the dynamic cutting thickness during the milling process is calculated to make the model more accurate and closer to the actual …
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Ceramic inserts shine in instances of turning and milling. Ceramics in general do exceptionally well in instances of turning because of the heat they are capable of generating. Alternatively, ceramic options such as silicon nitrides can perform very efficiently in milling applications because of their enhanced shock tolerance and fracture ...
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Abstract With the development of the feasibility study on ultrasonic vibration-assisted machining in difficult cutting materials, its surface microstructure and the use performance get more and more attention. In this paper, the 3D roughness and surface residual stress are analyzed based on the experiments of common milling (CM) and ultrasonic …
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Ultrasonic vibration-assisted (UVA) cutting is an advanced technique to improve the machinability and productivity of difficult-to-machine materials. This paper aims to assess the cutting performance of ultrasonic vibration-assisted milling (UVAM) technique and conventional milling (CM) in side milling of Ti–6Al–4 V. Tool trajectory …
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Micro-milling tools are usually used for the 3D precision processing of micro metal parts under ultra-high speed. However, due to the structural characteristics of small scale, variable cross-section, and weak stiffness, the vibration of micro-milling tools is weak and easily mutates, which can potential cause great harm to the stability and …
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Ceramic machining is the process of shaping and forming ceramic materials into desired shapes and dimensions using techniques such as grinding, turning, milling, drilling, and …
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GH4169 nickel-based high-temperature alloy demonstrates excellent mechanical, chemical, thermal shock, and mechanical load resistance properties. However, it is typically a difficult-to-machine material. Ultrasonic vibration–assisted milling can effectively solve the machining challenges of GH4169 nickel-based high-temperature …
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As presented in Table 1, there are three modes of 1D UVAM [17, 25] (namely cutting direction vibration, vertical cutting direction vibration, axial vibration), and the theoretical trajectory of the tool relative to the workpiece is a sine curve with periodic reciprocating characteristics.There are two types of 2D-UVAM modes: ultrasonic …
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Vibration-assisted machining (VAM) is a process in which high-frequency small amplitude vibration is applied on tool or workpiece to improve cutting performance, especially for …
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As a result, incorporating ultrasonic vibration (UV) into the polishing process is critical for achieving ultra-precision machining of SiCp/Al ceramics. UV has been used by numerous scholars in the processes of machining and inspection of SiCp/Al ceramics. Wang et al. [12] investigated ultrasonic vibration-assisted milling (UVAM) of SiCp/Al ...
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