A force control strategy of backstepping + proportion integration differentiation (PID) is proposed. The grinding end effector is installed on the flange of the robot. The robot controls the position and posture of the grinding end actuator and the grinding end actuator controls the grinding force output. First, the modeling and analysis of the ...
[Show full abstract] facilitate the application of a flexible range of strategies for control of the grinding process it was decided to formulate a modular conceptual framework. A variety of ...
A novel series of some hydrazones bearing thiazole moiety were generated via solvent-drop grinding of thiazole carbohydrazide 2 with various carbonyl compounds. Also, dehydrative-cyclocondensation of 2 with active methylene compounds or anhydrides gave the respective pyarzole or pyrazine derivatives. The structures of the newly synthesized compounds were …
Abstract: In this paper, aiming at the stability control of the cement pre-grinding system, MFAC method is proposed to control the weight of the steady flow bin. First, the pre-grinding process is analyzed to determine the key variables that affect the pre-grinding efficiency; select the feed volume and steady flow bin weight for modeling.
A field balancing experiment is carried out on a high-precision computer numerical control gear grinding machine. Experiment results demonstrate that, compared with the commonly used commercial balancing system, the proposed method can not only reduce the residual vibration amplitude at the objective balancing speed effectively but also reduce the …
Engineering noise control 249 Figure 10.2. Sound sources should not be placed near corners (ASF, 1977) include rejection of the proposed design. The first step for new installations is to determine the noise criteria for sensitive locations
1 Abstract. Help. New Window. The invention discloses a method for manufacturing a hard alloy numerical control blade. The method comprises the following steps of: batching the following components in percentage by mass: 10 to 15 percent of hard phase titanium carbide, 6 to 8 percent of tantalum carbide, 4 to 6 percent of niobium carbide, 8 to ...
Abstract. A computerized adaptive control grinding system has been developed. The system is designed to optimize both the grinding and dressing conditions for maximum removal rate subject to ...
Abstract. A method for in-process manipulation of depth of cut to control the ground surface flatness is presented. In vertical spindle surface grinding, achievable single pass tolerances are often limited by the grinding wheel and machine compliance. The presented methodology consists of precisely adjusting the depth of cut during grinding to ...
Abstract: Since the first experiments with computerized expert control of grinding plants in the early 1970's expert control has steadily progressed in the minerals industry to be very advanced, including not only many artificial intelligence methodologies but advanced
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 …
Abstract. The grinding process is a typical complex nonlinear multivariable process with strongly coupling and large time delays. Based on the data-driven modeling theory, the integrated modeling and intelligent control method of grinding process is carried out in the paper, which includes the soft-sensor model of economic and technique indexes, the …
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.
Abstract. To distinguish with the conventional tooth flank grinding only considering geometric accuracy, an innovative digital twin modeling is proposed for loaded contact pattern based grinding of spiral bevel gears. ... Moreover, an adaptive data-driven material removal decision and control is used for data-driven tooth flank grinding control ...
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 ...
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 ...
The present invention is applicable to automation field, and provide a kind of control method and device of the robot for grinding of performing the operation, the method comprises: the CT image obtaining object to be ground and the grinding position information be positioned on described CT image; According to the CT Computer image genration three-dimensional point cloud …
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.
Metal bonded diamond grinding wheels are very important for precision grinding operations of hard and brittle materials especially like ceramics or cemented carbides. But the trueing and dressing problem has affected its wide use. In this paper, a new EDD (Electrical discharge dressing) device was developed for the dressing of metal bonded diamond arc grinding …
The grinding and polishing robot system is a system that connects the end effector to the end of the industrial robot through series connection. The end effector is connected by the arm-around method to realize the contact stress control during the grinding and polishing process. The structure of the grinding and polishing robot is shown in ...
Abstract. To reduce the grinding trajectory deviation caused by the absolute positioning accuracy of robot, a trajectory compensation method based on Co-Kriging space interpolation method is proposed. Meanwhile, an adaptive iterative constant force control method based on one-dimensional force sensor is proposed to improve the processing ...
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
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 …
Abstract: The CNC cam grinding contour accuracy is influenced by the complexity of the cam profile and periodic disturbance caused by end effect and friction of the grinding system. In order to enhance the contouring performance, a …
Abstract: In this paper, aiming at the stability control of the cement pre-grinding system, MFAC method is proposed to control the weight of the steady flow bin. First, the pre-grinding process is analyzed to determine the key variables that affect the pre-grinding efficiency; select the feed volume and steady flow bin weight for modeling.
Both animal social contact and movement control significantly affected maintenance, posture and sexual behaviors. Male dromedaries housed in groups expressed higher frequencies of sexual desire-related behaviors (teeth grinding, open legs, tail flapping, dulla "soft palate exteriorization", blathering and urination) than those individually housed.
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
Abstract. Grinding robots have been widely used in industrial manufacturing, but not in the production of large steel pipes. ... In the process of weld bead grinding, the control and adjustment of the motion component at the end can overcome this difficulty by decoupled motion control with high precision, and greatly improve the quality of seam ...
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.
The process serves to control the step-by-step feed motion or touch-on motion of a grinding wheel (18) relative to a workpiece (10) or a measuring sensor. In so doing, a sequence of measured values of the power consumption of the rotary drive motor (24) of the grinding wheel (18) is recorded. If a specific sequence of measured current values remains under a certain …