Development of real time and in-process gauging technology for grinding process of cylindrical workpieces

2002 ◽  
Author(s):  
Jong-Nyun Lee ◽  
Jong Il Bae ◽  
Suk Lee ◽  
Jang Myung Lee
Keyword(s):  
Real Time ◽  
Grinding Process

Design of Cemented Carbide Face Automation Grinder Based on Constant Force Grinding and Online Measurement Technology

2013 ◽  
Vol 712-715 ◽  
pp. 2742-2746
Author(s):  
Tao Chuan Zhang
Keyword(s):  
Real Time ◽  
Measurement Data ◽  
Cemented Carbide ◽  
High Wear Resistance ◽  
Measurement Technology ◽  
Grinding Process ◽  
Constant Force ◽  
Feed System ◽  
Servo Drive ◽  
Control Measurement

A set of face automation grinder is designed aimed at the cemented carbide characteristics of high hardness, high wear resistance, and good dimensional stability,and automatic grinding process is divided into three stages of coarse grinding,accurate grinding and light grinding; Constant force feed system is designed using servo drive mechanism and pneumatic mechanism; Using on-line measurement and grinding support institutions, the grinding process real-time monitoring and real-time processing size measurement are realized; With PLC as the central control unit automatic control system is designed for the grinding force control, measurement data processing and feedback show and grinding process control; The machine design idea is provided the references for other grinding machine automation design.

Real-Time Model Building and Experiment Researching of Grinding Force for External Plunge Grinding Process

2006 ◽  
Vol 532-533 ◽  
pp. 905-908
Author(s):  
Guo Fa Li ◽  
Long Shan Wang ◽  
Shu Xiang Yang
Keyword(s):  
Real Time ◽  
Model Building ◽  
Grinding Force ◽  
Grinding Process ◽  
Time Model ◽  
Plunge Grinding ◽  
The Real ◽  
On Line ◽  
Grinding System ◽  
Good Agreement

A real-time model of two-direction grinding force for external plunge grinding process has been built based on the research of grinding system dynamics equation. The two-direction grinding force can be measured on-line by a force cell sensor developed in this paper. And the grinding depth and grinding force, which depend on grinding time, were dynamic simulated by computer simulation. The experimental results are in good agreement with the simulation results, proved the real-time model’s exactitude. The real-time models showed in this paper not only can predict and evaluate grinding behave and quality, but also provide the precondition for grinding optimum, intelligential control, and virtual grinding research etc.

Real-Time Force Control of a Grinding Process Using Unfalsification and Learning Concept

2000 ◽  
Author(s):  
H. Ali Razavi ◽  
Thomas R. Kurfess
Keyword(s):  
Real Time ◽  
Force Control ◽  
Open Loop ◽  
Measured Data ◽  
Controller Synthesis ◽  
Grinding Process ◽  
Plant Model ◽  
Performance Specification ◽  
Learning Concept

Abstract Conventional controller synthesis relies on a plant model that is not falsified by the open-loop experiments. Alternatively, without any plant model or prejudicial assumptions it is possible to find a set of controllers that are not falsified by the performance specification or the measured data (Safanov and Tsao, 1997). This approach is used to implement a real-time force controller on a reciprocating surface grinder.

Control of Cutting Force for Creep-Feed Grinding Processes Using a Multi-Level Fuzzy Controller

2006 ◽  
Vol 129 (4) ◽  
pp. 480-492 ◽  
Author(s):  
Chengying Xu ◽  
Yung C. Shin
Keyword(s):  
Real Time ◽  
Grinding Force ◽  
Open Architecture ◽  
Depth Of Cut ◽  
Grinding Wheel ◽  
Grinding Process ◽  
Stable Range ◽  
Creep Feed Grinding ◽  
Creep Feed ◽  
Multi Level

In this paper, a multi-level fuzzy control (MLFC) technique is developed and implemented for a creep-feed grinding process. The grinding force is maintained at the maximum allowable level under varying depth of cut, so that the highest metal removal rate is achieved with a good workpiece surface quality. The control rules are generated heuristically without any analytical model of the grinding process. Based on the real-time force measurement, the control parameters are adapted automatically within a stable range. A National Instrument real-time control computer is implemented in an open architecture control system for the grinding machine. Experimental results show that the cycle time has been reduced by up to 25% over those without force control and by 10–20% compared with the conventional fuzzy logic controller, which indicates its effectiveness in improving the productivity of actual manufacturing processes. The effect of grinding wheel wear is also considered in the creep-feed grinding process, where the grinding force/power can be maintained around the specified value by the proposed MLFC controller as the wheel dulls gradually.

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