convoyeure de machine de concassage

Longitudinal ultrasonic vibration effects on grinding

2023.11.4  Owing to the different influence mechanisms of longitudinal ultrasonic vibration on grinding forces in the side and end grinding, the grinding force reduction in

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Study on grinding performance during ultrasonic vibration

2023.8.22  This is because ultrasonic vibration breaks the long grinding arc, the impact cutting trace of the previous wear particle will be cut away by the next wear

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Comprehensive influence of ultrasonic vibration–assisted

2023.11.1  Self-excited regenerative vibration, a well-known endogenous excitation mechanism, has a critical influence on material removal behavior and ground surface

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Process of Ultrasonic Machining - Springer

2023.2.7  Ultrasonic machining (USM) is a nontraditional mechanical machining process and can be used in many applications. This chapter presents USM and rotary

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Grindability of γ-TiAl intermetallic compounds during ultrasonic ...

2023.7.25  After introducing the basic experimental materials and details, the effect of ultrasonic composite machining technology and grinding parameters on grinding forces

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Grinding characteristics during ultrasonic vibration assisted grinding ...

2020.8.19  In general, grinding process may be compared to material removal by multiple moving indenters. Generally, the forces in grinding are resolved into tangential

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Using power ultrasonics in machine tools - ScienceDirect

2023.1.1  While a somewhat special process, it finds valuable applications (e.g., in recent years to nanomachining) and may also be variously termed ultrasonic impact

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Ultrasonic Machining Machining Handbooks ASM Digital

Abstract. The ultrasonic machining (USM) process consists of two methods, namely, ultrasonic impact grinding and rotary USM. This article lists the major ultrasonic

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Study on Effect of Ultrasonic Vibration on Grinding Force

In the grinding process, single abrasive grinding force can be expressed as follows: where is grinding force per unit grinding area, which depends on material properties, is the

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Study on Grinding Force of Two-Dimensional

2023.1.15  The grinding force is an important index during the grinding process, which affects the surface quality and other aspects after machining. However, the research on the grinding force of ceramic matrix

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Review on ultrasonic machining - ScienceDirect

1998.3.1  Ultrasonic machining (USM) is a non-conventional mechanical material removal process generally associated with low material removal rates, however its application is not limited by the electrical or chemical characteristics of the workpiece materials. It is used for machining both conductive and non-metallic materials; preferably

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Materials Free Full-Text Precision Grinding Technology of

2023.8.10  In recent years, the ultrasonic grinding technology of hard and brittle materials has been developed rapidly [1,2,3].Ultrasonic grinding is the application of ultrasonic vibration on the grinding head or workpiece, so that the grinding head and the workpiece achieve ultrasonic frequency intermittent processing, so as to effectively

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Effect of ultrasonic rolling on surface integrity ... - ScienceDirect

2023.7.1  In this study, Ultrasonic Surface Rolling Technology is applied to the grinding process of bearing steel. By comparing the effects of four different process combinations, namely coarse grinding, coarse grinding+fine grinding, coarse grinding+USRT, and coarse grinding+fine grinding+USRT, on the surface integrity and

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Longitudinal ultrasonic vibration effects on grinding

2023.11.4  Figure 1 shows the diagram of UASG and UAEG; where the workpiece coordinate system O-XYZ is taken as the global coordinate system, a p is the grinding depth (μm), b is the grinding width (mm), and A is the ultrasonic amplitude (μm). As shown in Fig. 1(a) and (b), the longitudinal ultrasonic vibrations are parallel and perpendicular to the

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Material removal behavior and crack-inhibiting effect in ultrasonic ...

2022.2.1  Currently, grinding is the main processing method for ceramic materials because of its hard and brittle characteristics. However, owing to its low efficiency, serious grinding wheel wear, residual microcracks, other serious defects, the traditional grinding process cannot meet the engineering application requirements of ceramic material parts.

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Comprehensive influence of ultrasonic vibration–assisted

2023.11.1  Self-excited regenerative vibration, a well-known endogenous excitation mechanism, has a critical influence on material removal behavior and ground surface generation in a precision grinding process. During ultrasonic vibration–assisted grinding (UVAG), one-dimensional or two-dimensional ultrasonic vibration exerted to abrasive

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Ultrasonic assisted machining of gears with enhanced

2022.4.19  Ultrasonic machining is a non-conventional mechanical material removal process, which was introduced in 1950 by Kumabe for machining both metallic and non-metallic materials. 32 During the processing, the tool vibration causes the abrasive particles held in the slurry between the tool and workpiece to impact the workpiece surface

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Ultrasonic machining of carbon fiber–reinforced plastic

2021.3.3  Carbon fiber–reinforced plastic (CFRP) composites are extensively being applied in manufacturing sectors because of their extraordinary characteristics. However, CFRP composites often require some extra machining processes to improve the dimensional accuracy and component integrity of CFRP composites in manufacturing

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(PDF) Micromorphology, Microstructure, and Wear Behavior

2022.6.16  Ultrasonic strengthening grinding process (USGP), which uses fused ceramic balls, brown corundum, and strengthened liquid for treating target samples is an ef ficient ap- proach for obtaining ...

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Ultrasonic Machining Machining Handbooks ASM Digital

Abstract. The ultrasonic machining (USM) process consists of two methods, namely, ultrasonic impact grinding and rotary USM. This article lists the major ultrasonic components that are similar to both rotary USM and ultrasonic impact grinding. It also provides schematic representations of the components used in rotary USM and ultrasonic impact ...

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Using power ultrasonics in machine tools - ScienceDirect

2015.1.1  While a somewhat special process, it finds valuable applications (e.g., in recent years to nanomachining) and may also be variously termed ultrasonic impact machining, impact grinding, or ultrasonic drilling. This chapter will address the following topics: • An historical and technical review of early developments of ultrasonic machine

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Experimental investigation of damage formation and

2020.12.16  Ultrasonic assisted grinding (UAG) is an effective and precise machining method combining ultrasonic vibration with traditional grinding technology . As a composite machining technique, UAG is a non-thermal process, which may obtain high material removal rate (MRR) while keeping low cutting pressure, thus, leading to relatively

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机械工程学报-., 第卷, 第期

2021.10.8  关键词: 超声振动辅助磨削, 超声装置, 材料去除机制, 表面形成机制 Abstract: Ultrasonic vibration-assisted grinding (UVAG) technology, by superposing high-frequency and micro-amplitude ultrasonic vibration on the conventional grinding operation, has significant advantages and broad application prospects in the high-efficiency and

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Improved wear resistance of 440C steel ball via ultrasonic ...

2023.12.1  To address the challenges of enhancing the wear resistance of 440C steel balls, a method of ultrasonic strengthening grinding process (USGP) is introduced. The principle of this method employs ultrasonic waves to drive a mixture consisting of white corundum powder, strengthening liquid, and 440C steel balls.

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Predictive model for cutting forces and specific cutting

2022.9.9  The present research work focuses on developing a mechanistic model for the specific grinding energy in UAG process. Based on the developed model, the effect of cutting parameters has been studied. The cutting force plays a significant role in appraising the performance of machining process. The effect of various forces such as tangential,

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(PDF) Comprehensive Influence of Ultrasonic Vibration

2023.3.19  Comprehensive Influence of Ultrasonic Vibration-Assisted Technology on Material Removal Mechanism under the Excitation of Regenerative Vibration in Precision Grinding Process March 2023 DOI: 10. ...

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Journal of Physics: Conference Series PAPER OPEN

Research on Ultrasonic-Assisted Grinding Process of SiCp/Al Composites Chuanmin Zhu1, Zhan Tao1, Peng Gu1* and Yiqing Yu1 ... It’s found that the grinding depth has the greatest impact on the grinding force, and there are a large number of broken SiC particles on the surface of SiCp/Al. Zhu et al. [3],[4] studied the material removal mechanism of

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Analytical model of grinding force for ultrasonic-assisted grinding

2023.3.18  Ultrasonic-assisted machining of silicon carbide (SiC) ceramic matrix composites (CMCs) has the ability to decrease grinding force and improve processing quality. The machining process often produces large cutting forces which cause defects, such as delamination and burrs, due to the brittleness and high hardness of the material.

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