In Fig 2, the ANSIC controller is applied with the inner position tracking loop and outer grinding interactive force tracking loop simultaneously.As a fully closed-loop real-time feedback control system, the controller needs to feedback the grinding force real-timely based on the force sensor interacting with the uncertain workpiece environment (uncertain surface curve, stiffness, etc.).
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2 White paper | Advanced process control for grinding circuits Abstract Recent copper price evolution pushes modern mining industry even harder to achieve highest production with maximum efficiency. Operations are bound by numerous contractual and environmental conditions that bring a high degree of
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US7077345B2 US10/319,392 US31939202A US7077345B2 US 7077345 B2 US7077345 B2 US 7077345B2 US 31939202 A US31939202 A US 31939202A US 7077345 B2 US7077345 B2 US 7077345B2 Authority US United States Prior art keywords feed grinding control feed conveyor power source Prior art date Legal status (The legal status is an assumption and is …
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Abstract: The intelligent monitor and control system for grinding process is proposed in this paper, it utilizes the nonlinear modeling theory and self-learning capability of neural network to setup non-liner mapping relations between grinding conditions and AE signals, and to realize grinding process intelligent monitor and control by picking-up grinding AE signals on line.
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Abstract In 2009, the survey of Wei and Craig reported qualitatively on the benefits of process control systems in grinding and flotation. The present review of about twenty milling operations reports quantitatively on these benefits. Expert systems, model predictive controller, and fuzzy logic control systems, to name only the most used in the mining industry, have delivered …
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Abstract. In abrasive belt grinding process for surface of blade, elasticity, deformation and abrasive belt wear are major factors affecting the machining stability, efficiency and quality. In order to improve the grinding process and realize optimal grinding, a new controllable and flexible belt grinding mechanism is designed and assembled in ...
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A double closed-loop grinding force control system is designed to perform the grinding force control. This thesis develops the models of the servo system and the grinding process. Based on these models, a force controller is designed with the ability of tracking the desired force set point. The proposed closed-loop grinding force control system is
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10%through force control algorithm, the grinding force fluctuation is maintained within 2 n, the mean value, standard deviation and variance of absolute value of force error are significantly reduced, the convergence rate of grinding force and the roughness of workpiece are much better than before, which shows the effectiveness of the proposed …
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The main advantage of CBN grinding wheels is the long wheel life owing to the hardness of the CBN abrasive. Recent research has confirmed another advantage of CBN, which is cooler grinding. The new research allows the temperature in grinding to be predicted based on experimentally validated CBN thermal properties. This work also provides for in-process …
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Abstract: This paper describes the structure, content and relations employed in the development of an intelligent grinding database. The intelligent database has been constructed in MS Access with Visual Basic support code. The database was developed as an integral feature of an intelligent grinding assistant (IGA ).
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Abstract: In this article, a model-free extremum-seeking control (ESC) design is proposed for the operational control of mineral grinding, where both operational indices regulation and throughput maximization are considered. Operational indices regulation and throughput maximization, as two conflicting objectives, are balanced through assigning …
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the intelligent monitor and control system for grinding process is proposed in this paper, it utilizes the nonlinear modeling theory and self-learning capability of neural network to setup non-liner mapping relations between grinding conditions and ae signals, and to realize grinding process intelligent monitor and control by picking-up grinding …
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Home Browse by Title Proceedings Proceedings, Part I, of the International Conference on Life System Modeling and Intelligent Computing - Volume 6328 An Improved Control Strategy for Ball Mill Grinding Circuits
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Hits:: Download times:: Abstract:: This paper aims to determine the optimal grinding parameters when minimizing the edge chipping area of the zirconia ceramic exited hole under rotary ultrasonic grinding, and prove the rationality of the strategy of suppressing chipping with auxiliary supported at the bottom of the workpiece, provide theoretical guidance for actual production.
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Abstract: In the raymond mill grinding processes, high-accuracy control for the current of raymond mill is the key point to enhance the product quality and production efficiency. However, strong external disturbances, such as variations of ore hardness and ore size, always exist. It is not easy to make the current of raymond mill constant.
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Abstract. The grinding process of the ball mill is an essential operation in metallurgical concentration plants. Generally, the model of the process is established as a multivariable system characterized with strong coupling and time delay.
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Abstract. Considering the influence of rigid-flexible dynamics on robotic grinding process, a model predictive control approach based on deep belief network (DBN) is proposed to control robotic grinding deformation. The rigid-flexible coupling dynamics of robotic grinding is first established, on the basis of which a robotic grinding prediction ...
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W. Brian Rowe, in Principles of Modern Grinding Technology, 2009. Intelligent Control. Intelligent control is where the CNC can change an input process control parameter it has been given to improve process operation. An example of intelligent control is where the feed position for final size is changed in response to a sensor measurement such as a diameter gauge.
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Abstract: Controlling the contact force on workpieces has been a challenging task for industrial grinding/deburring operations. Its realization often requires a grinding spindle with a multi-axis force sensor and controller feedback. The spindle needs to frequently vary its position in order to maintain a constant contact force.
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A method and apparatus are provided for controlling a cam grinding machine and the like by kinematically modeling (FIGURES 10 through 21) the cam generating geometry of the grinding machine and using the kinematic model to convert cam lift data (FIGURES 3A and 3B), which is related to the desired contour of a cam (12 or 14), to a form which is usable by first and …
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Abstract. Abstract—Optimizing the final grinding production indices (GPIs), which include the product particle size and the grinding production rate, to meet the overall manufacturing performance requirements is the main function of automatic control of a grinding circuit (GC).
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This paper aims to give an insight into the development and evaluation of force controlled machining processes with a commercially available setup. We will focus on a deburring and a grinding scenario, representing the major applications in today's robot machining. Whereas the deburring use-case implements a force dependent feed-rate control, the grinding use-case …
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The purpose of this paper is to propose a robot constant grinding force control algorithm for the impact stage and processing stage of robotic grinding.,The robot constant grinding force control algorithm is based on a grinding model and iterative algorithm. During the impact stage, active disturbance rejection control is used to plan the robotic reference contact …
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Abstract: Controlling the contact force on workpieces has been a challenging task for industrial grinding/deburring operations. Its realization often requires a grinding spindle with a multi-axis force sensor and controller feedback. The spindle needs to frequently vary its position in order to maintain a constant contact force.
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Controlled electrical machinery process. G e n e r a t i o n o f M a c h i n e T o o l s. 1. Machine tools are operated manually or with automatic control. The earlier machines used flywheels to ...
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Grinding the raw material to particles of 10-15 microns increased the extract yield up to 15%, the amount of sugars and amine nitrogen - by an average of 23.5% in comparison with the control. Ultrafine grinding allows you to process barley and malt in a 1: 1 ratio without the use of enzyme preparations, with wort obtaining at the control level ...
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Abstract The development of Computer Numerical Control (CNC) spiral bevel gear grinding has paved the way for major improvement in the production of precision spiral bevel gears. The object of the program was to decrease the setup, maintenance of setup, and pattern development time by 50 percent of the time required on conventional spiral bevel ...
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Abstract. This paper aims to give an insight into the development and evaluation of force controlled machining processes with a commercially available setup. We will focus on a deburring and a grinding scenario, representing the major applications in today's robot machining. Whereas the deburring use-case implements a force dependent feed ...
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Abstract: In order to solve the problem of contact force control in the process of polishing and deburring, and improve the polishing accuracy, the adaptive impedance control algorithm is adopted to realize the force and position compliance control.
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Abstract—Optimizing the final grinding production indices (GPIs), which include the product particle size and the grinding production rate, to meet the overall manufacturing performance requirements is the main function of automatic control of a grinding circuit (GC). However, the complex and time-varying
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Abstract: A control for a grinding machine of the type having a grinding wheel mounted at an oblique angle relative to a workpiece, the control including means for receiving first data representative of a contour to be ground on the workpiece defined in a first set of axes in a workpiece coordinate system, means for transforming the first data ...
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Primary Examinerl-larold D. Whitehead Attorney-Howard T. Keiser and C. Richard Eby GAGE CONTROL [57] ABSTRACT An apparatus for use on a grinding machine for adaptively controlling the grinding process. The grinding process is initiated by a coarse-feed motion of a grinding tool into a workpiece.
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Grinding wheels come in many different sizes, shapes, and abrasives (Figure 5-7). Some of the various types are listed below. Straight Straight wheels, numbers 1, 5, and 7, are commonly applied to internal, cylindrical, horizontal spindle, surface, tool, and offhand grinding and snagging. The recesses in type
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Abstract Grinding of non-round surfaces, in particular polygonal surfaces of dies, is characterized by substantial non stationary. At different sections of …
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ABSTRACT Grinding technology has been continuously improving with numerous innovations with a view to improve productivity and reduce power consumption. In order to reduce the manufacturing costs for cement, it is very important to optimise the existing mill installations as far as the grinding process is concerned and also to use high
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Abstract and Figures. ... Force and position h ybrid control of grinding and polishing. robot. When the end eff ector is in contact with the. workpiece, the grinding and pol …
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