Effects of axial ultrasonic vibration on grinding quality ...
Through establishing the theoretical grinding force models for CPG and AUPG on Zerodur, Sun et al. [12, 13] analyzed the exact effect of axial ultrasonic vibration on the grinding force in AUPG. Furthermore, the normal and tangential forces were found to be reduced by 27.31% and 22.52%, respectively, through axial ultrasonic vibration, while ...
(PDF) Estimation of Grinding Force with Consideration of ...
PDF | Grinding force has been treated as an indication of the accuracy and surface quality of ground workpiece. Building a model which can be used to... | Find, read and cite all the research you ...
Comprehensive modeling approach of axial ultrasonic …
Comprehensive modeling approach of axial ultrasonic vibration grinding force HE Yu-hui() 1,2, ZHOU Qun() 1,2, ZHOU Jian-jie() 1,2, LANG Xian-jun() 1,2 1. College of Mechanical and Electrical Engineering, Central South
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Graphite mineral processing flowsheet Yantai Jinpeng. Graphite beneficiation method include flotation electrostatic separation gravity separation etc Flotation is the most widely used process Graphite mineral processing are mainly suitable for all kinds of graphite with different crystal habit and graphite accompany with mica etc silicate minerals or pyrite Beneficiation method flotation ...
Experimental study of single cubic boron nitride grains in ...
Under the same grinding conditions, the tangential grinding force, Ft, decreased slightly at ap = 10 µm, while the tangential grinding force decreased when ap = 15 µm. This shows that ultrasonic vibration assisted with a greater range of changes and space.
"FORCE ANALYSIS OF GRINDING WHEEL ON DIFFERENT …
In grinding forces are generated by two mechanisms, chip formation and friction. Forces are generated by structural elements of the grinding wheel which are in physical contact with the work piece. Actually the friction related part of the total grinding force can be greater than the …
MAR 2 2 1985
Ft tangential grinding force Fn normal grinding force f, Pgrinding force in p direction fq grinding force in q direction k spring constant in p direction ... which significantly reduces vibrations without additional actuators or active control. 13 2 DYNAMIC BEHAVIOR OF GRINDING MACHINES 2.1 Background on Grinding Machine Dynamics ...
A new centerless grinding technique ...
A new centerless grinding technique using a surface grinder.doc,Journal of Materials Processing Technology 162–163 (2005) 709–717 A new centerless grinding technique using a surface grinder Y. Wu a,?, T. Kondo b, M. Kato a ...
Advances in Mechanical Engineering 2017, Vol. 9(2) 1–7 ...
Effect of grinding grain size on grinding force. The statistical data of the grinding force in the process of ordinary machining and ultrasonic-aided high-speed machining are taken by dynamometer. The analysis of the grind-ing size of the tangential grinding force, Ft, and experi-mental data of normal grinding force, Fn, is shown in Figure 6 ...
Modeling of Vibration Condition in Flat Surface Grinding ...
2.2. Vibration Modeling of the Flat Surface Grinding Process. A free-body diagram of the flat surface grinding process with forces acting on the grinding wheel and the …
Correlation analysis of motor current and chatter ...
and chatter vibration in grinding In the cylindrical grinding process, the grinding force can be decomposed into normal grinding force P n and tangential grinding force P t (figure 1). The tangential grinding force acts on the work piece and produces a load torque on the motor axis of the feed drive system.
Prediction of Tool Forces in Manual Grinding Using ...
Tool forces are a decisive parameter for manual grinding with hand-held power tools, which can be used to determine the productivity, quality of the work result, vibration exposition, and tool lifetime. One approach to tool force determination is the prediction of tool forces via measured operating parameters of a hand-held power tool. The problem is that the accuracy of tool force prediction ...
grinding force - Chinese translation – Linguee
Many translated example sentences containing "grinding force" – Chinese-English dictionary and search engine for Chinese translations. Translator Translate texts with the world's best machine translation technology, developed by the creators of
Study on Effects of Ultrasonic Vibration on Grinding Force ...
The mathematical models of the dynamic grinding force and the average grinding force were established by introducing the unit grinding force Fu. And the formula of the average grinding force in the grinding zone was derived. The experiments were conducted in the traditional grinding (TG) mode and tangential ultrasonic vibration grinding (TUAG) mode.
series Balance Monitor series
Fn : Normal grinding force (50 N/V) Measured value = 187.5 N Ft : ˚Tangential grinding force (5 N/V) Measured value = 38.4 N Fn : Normal grinding force (50 N/V) Measured value = Approx. 214 N Grinding method Dry surface grinding, up cut Grinding wheel Diamond wheel with cast iron core (SD100N125M) O.D. 300 mm, width 16 mm I.D. 127 mm
Research on Grinding and Polishing Force Control of ...
： The automation of the grinding and polishing process is important to improve the production efficiency of the part surfaces.In this paper,a new compliant flange mounted on the end of the industrial robots for the robotic grinding and polishing force control is ...
Modeling of Tangential Vibrations in Cylindrical Grinding ...
The force equation composition differs in these two zones due to the nature of cutting process at each zone and this lead to two terms in the grinding force equation in the normal direction. The zone between them is not considered. The tangential grinding force is related to the normal force by friction. cutting zone sliding zone grindstone ...
EFFECT OF GRINDING WHEEL LOADING ON FORCE AND …
The factors which increased grinding force also induce higher wheel loading. The total value of the cutting force largely determines the wear of the grinding wheel, while the relationship between the tangential and normal force gives a measure of the cutting capacity of the wheel. The dynamometer method is used to measure the force.
Grinding Force - an overview | ScienceDirect Topics
Grinding force ratio is a parameter that gives indirect information about the efficiency of grinding. Force ratio is defined as: (2.8) μ = F t / F n grinding force ratio. When grinding with sharp wheels grinding force ratio is high since normal force is low compared to tangential force. Conversely, when grinding with blunt wheels grinding ...
Statistical Analysis of Industrial Grinding Brush Force ...
This paper presents an in-depth study of the helical grinding brush force characteristics aiming at developing a mobile robot system to perform rust removal and other surface processing tasks. Based on an off-line Finite Element model that can calculate ...
Automating the Mold-Material Grinding Process
vibration noise and the normal grinding force suddenly decrease and the tangential grinding force also decreases slightly. When the total removalvolumeis 500mm3/mm, the bending-vibration noise and normal and tangential grinding forces start increasing again. After the total removal volume exceeds 550 mm3/mm, the bending-
Study of Forces During Ultrasonic Vibration Assisted …
Dependencies were obtained for calculation of all grinding force components at different vibration amplitudes and frequencies when various number of USV waves fits the contact arc of the grain and the workpiece.Experimental values of grinding forces turned out to be 10 – 15% lower than those when USV waves are not applied
Study on Effect of Ultrasonic Vibration on Grinding Force ...
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 …
grinding force tangentialgrinding force vibration
The tangential grinding force model and normal grinding force model are formulated on the Simulink, that is Eq(1) and Eq(2). The following 8 circuit diagram shows the tangential and normal grinding forces of the formulated circuit in Simulink, and check with experimental results (Jinyuan Tanga et al., 2009).
A model for grinding forces prediction in ultrasonic ...
Ultrasonic vibration assisted grinding is an advanced method for machining difficult-to-process materials such as SiCp/Al composites. This paper presents a mechanics model for predicting grinding forces in ultrasonic vibration assisted grinding of SiCp/Al composites. It consists of side grinding force model and end grinding force model. In side grinding force model, the major components are ...
Comprehensive modeling approach of axial ultrasonic ...
The theoretical model of axial ultrasonic vibration grinding force is built on the basis of a mathematical model of cutting deforming force deduced from the assumptions of thickness of the undeformed debris under Rayleigh distribution and a mathematical model of friction based on the theoretical analysis of relative sliding velocity of abrasive and workpiece. Then, the coefficients of the ...
A New Model for Grinding Force Prediction and Analysis ...
In addition, as shown in Fig. 13, the tangential grinding force F gt can be divided into two direction, i.e., the longitudinal grinding force F gl and the vertical grinding force F gv [35]. ...
Study on Effect of Ultrasonic Vibration on Grinding Force ...
The experiment results demonstrate that grinding forces are significantly reduced by introducing ultrasonic vibration into conventional micro end grinding (CMEG) of silica glass; ultrasonic assistance causes inhibiting effect on variation percentages of tangential grinding force with grinding parameters; ductile machining is easier to be ...