Machining Control of Surface Roughness by Measuring Cutting Forces

2012 ◽  
Vol 498 ◽  
pp. 157-162 ◽  
Author(s):  
Eustaquio García Plaza ◽  
Pedro Jose Núñez López ◽  
Francisco Mata ◽  
A. Sanz
Keyword(s):  
Surface Roughness ◽  
Adaptive Control ◽  
Control System ◽  
Cutting Process ◽  
Machining Process ◽  
Second Phase ◽  
Adaptive Control System ◽  
Cnc Machine ◽  
Cnc Turning ◽  
Phase Surface

The primary aim of this study was to design and develop an on-line control system of finished surfaces in automated machining process by CNC turning. The control system consisted of two basic phases: during the first phase, surface roughness was monitored through cutting force signals; the second phase involved a closed-loop adaptive control system based on data obtained during the monitoring of the cutting process. The system ensures that surfaces roughness is maintained at optimum values by adjusting the feed rate through communication with the PLC of the CNC machine. A monitoring and adaptive control system has been developed that enables the real-time monitoring of surface roughness during CNC turning operations. The system detects and prevents faults in automated turning processes, and applies corrective measures during the cutting process that raise quality and reliability reducing the need for quality control.

Adaptive Control System to Assist the Surface Workpiece Quality when Drilling

2014 ◽  
Vol 474 ◽  
pp. 212-217 ◽  
Author(s):  
Marek Vrabel' ◽  
Ildikó Maňková ◽  
Jozef Beňo ◽  
Ladislav Kandráč ◽  
Jozef Stahovec
Keyword(s):  
Surface Roughness ◽  
Adaptive Control ◽  
Control System ◽  
Roughness Parameter ◽  
Cutting Speed ◽  
Constructional Material ◽  
Drilling Process ◽  
Adaptive Control System ◽  
Monitoring And Control ◽  
Surface Roughness Parameter

Article deals with design of adaptive control system for drilling process of aerospace critical components. The system proposed in this paper is directed towards real the time control of surface roughness parameter Ra. Proposed model for monitoring and control consists of surface roughness prediction system and decision making subsystem. The artificial neural network was employed to calculate surface roughness parameter Ra through of process monitoring indices such as torque Mz, force Fz, power P and cutting conditions feed f, cutting speed vc. Test samples were nickel based super alloy Udimet 720 used as a basic constructional material of discs for gas turbine engines.

scholarly journals Precision CNC machining and ways to achieve it

2018 ◽  
Vol 224 ◽  
pp. 01048 ◽  
Author(s):  
Roman Nekrasov ◽  
Ulyana Putilova ◽  
Yulia Tempel
Keyword(s):  
Finite Element ◽  
Adaptive Control ◽  
Control System ◽  
Finite Element Modeling ◽  
Cutting Tool ◽  
Cnc Machining ◽  
Adaptive Control System ◽  
Cnc Machine ◽  
Technical Solutions

The quality of the part is characterized by precision of its processing. A good fit of the product parts and, as a consequence, its reliability in general depends on how accurately the size and shape of the part is maintained during machining. In this connection, the article considers the problem of ensuring the accuracy during machining of work pieces using CNC machines. Within the identified problem, the analysis of known technical solutions in this area was carried out and three main areas were identified: optimization of cutting conditions, improvement of the treated surface area according to the criteria for increasing the resistance of the cutting tool, as well as error tracking and correction during machining. The main disadvantages of the analyzed methods and inventions are complexity of their implementation, the need to equip the CNC machine with an adaptive control system, and a limited field of application. Therefore, a method for controlling the accuracy of shaft processing using mathematical and finite element modeling is proposed.

scholarly journals ADAPTIVE CONTROL SYSTEM OF THE MACHINING PROCESS

2021 ◽  
pp. 31-34
Author(s):  
Zh. S. Tikhonova ◽  
P. A. Chemogonov ◽  
E. M. Frolov ◽  
D. V. Krainev
Keyword(s):  
Finite Element Method ◽  
Finite Element ◽  
Adaptive Control ◽  
Control System ◽  
Technological Process ◽  
Software Package ◽  
Adaptive System ◽  
Machining Process ◽  
Adaptive Control System ◽  
The Finite Element Method

An adaptive system is proposed that allows analyzing the parameters of the technological process through the use of sensors of force, power, torque. The design of the technological part of the proposed system in the form of a dynamometric mandrel is presented, taking into account the results of modeling and calculation by the finite element method in the SolidWorks software package.

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