Control of PLC for Paving Stock Mechanism of New-Type Machine Tool about Rapid Prototyping Manufacturing for Ceramic Parts

2010 ◽  
Vol 154-155 ◽  
pp. 1085-1090
Author(s):  
Dong Qiang Gao ◽  
Zhen Ya Tian ◽  
Fei Zhang
Keyword(s):  
Rapid Prototyping ◽  
Machine Tool ◽  
Machine Tools ◽  
Programmable Logic Controller ◽  
Programmable Logic ◽  
New Type ◽  
Type Machine ◽  
Working Principle ◽  
Rapid Prototyping Manufacturing ◽  
Automatic Manufacturing

With the development of the rapid prototyping manufacturing for ceramic parts, it is possible to shorten the manufacturing period of ceramic parts and improve the enterprise’s productivity efficiency. The development situation of the machine tools about rapid prototyping manufacturing for ceramic parts was introduced. A new-style device about rapid prototyping manufacturing for ceramic parts, which is based on the technology of laminated coalition and rapid concrete prototyping for ceramic parts, is designed. The basic constitutions, technical processing and working principle of the paving stock mechanism of the device have also been described. The PLC (programmable logic controller) is applied in the paving stock mechanism for controlling and runs well, which meets the requirements of automatic manufacturing for ceramic parts and improves the efficiency.

Design and Kinematic Analysis of a Novel Machine Tool With Four Rotational Axes and One Translational Axis

2019 ◽  
Vol 141 (11) ◽  
Author(s):  
Song Gao ◽  
Jihong Chen ◽  
Shusheng Liu ◽  
Xiukun Yuan ◽  
Pengcheng Hu ◽  
...  
Keyword(s):  
Machine Tool ◽  
Kinematic Analysis ◽  
Machine Tools ◽  
Inverse Kinematics ◽  
Kinematics Analysis ◽  
Rotary Axes ◽  
Machining Quality ◽  
New Type ◽  
Kinematic Performance ◽  
Five Axis

Abstract Due to their superior machining quality, efficiency, and availability, five-axis machine tools are important for the manufacturing of complicated parts of freeform surfaces. In this study, a new type of the five-axis machine tool was designed that is composed of four rotary axes as well as one translational axis. Given the structure of the proposed machine tool, an inverse kinematics analysis was conducted analytically, and a set of methods was then proposed to address the issues in the kinematic analysis, e.g., the singularity and multi-solution problems. Compared with traditional five-axis machine tools, which are typically composed of three linear axes and two rotary axes, the proposed machine tool exhibited better kinematic performance with machining parts with hub features, such as impellers, which was validated by simulations and real cuttings.

An investigation on modeling and compensation of synthetic geometric errors on large machine tools based on moving least squares method

2016 ◽  
Vol 232 (3) ◽  
pp. 412-427 ◽  
Author(s):  
Zihan Li ◽  
Wenlong Feng ◽  
Jianguo Yang ◽  
Yiqiao Huang
Keyword(s):  
Machine Tool ◽  
Least Squares ◽  
Error Compensation ◽  
Machine Tools ◽  
Geometric Error ◽  
Moving Least Squares ◽  
Geometric Errors ◽  
Position Accuracy ◽  
Type Machine ◽  
Large Machine

This article intends to provide an efficient modeling and compensation method for the synthetic geometric errors of large machine tools. Analytical and experimental examinations were carried out on a large gantry-type machine tool to study the spatial geometric error distribution within the machine workspace. The result shows that the position accuracy of the tool-tip is affected by all the translational axes synchronously, and the position error curve shape is non-linear and irregular. Moreover, the angular error combined with Abbe’s offset during the motion of a translational axis would cause Abbe’s error and generate significant influence on the spatial positioning accuracy. In order to identify the combined effect of the individual error component on the tool-tip position accuracy, a synthetic geometric error model is established for the gantry-type machine tool. Also, an automatic modeling algorithm is proposed to approximate the geometric error parameters based on moving least squares in combination with Chebyshev polynomials, and it could approximate the irregular geometric error curves with high-order continuity and consistency with a low-order basis function. Then, to implement real-time error compensation on large machine tools, an intelligent compensation system is developed based on the fast Ethernet data interaction technique and external machine origin shift, and experiment validations on the gantry-type machine tool showed that the position accuracy could be improved by 90% and the machining precision could be improved by 85% after error compensation.

Design and Evaluation of a New-Type Multifunctional Machine Tool - Functional Requirements and Design -

1997 ◽  
Vol 9 (6) ◽  
pp. 427-433 ◽  
Author(s):  
Nobuhiro Sugimura ◽  
◽  
Shigeru Ueno ◽  
Nozomi Mishima ◽  
Soichi Hachiga ◽  
...  
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Scale Model ◽  
Manufacturing Processes ◽  
Functional Requirements ◽  
Machining Processes ◽  
Mechanical Products ◽  
New Type ◽  
Set Up ◽  
Basic Configuration

The objective of this research is to develop a new type of flexible and multifunctional machine tool which can be integrated into such manufacturing processes as machining, inspection and the heat treatment of mechanical products. The functional requirements of the multifunctional machine tools were initially analyzed based on a questionnaire given to both the users and the designers of machine tools. The basic configuration of the machine tool is proposed to conform to the functional requirements. The configuration designed has two main spindles, for both the tool and the work, one subspindle, and eight rotational and linear feed axes. All the machining processes of turning, milling, 5-axis machining of sculpted surfaces, grinding, slotting gear shaving and laser processing can be carried out using the proposed machine tool without the need for manual set-ups. A simulation model and a scale model are developed that simulate the manufacturing motion processes and the set-up processes of the machine tool.

Impellent Tramcar Machine Hydraulic and Electrical Control System

2011 ◽  
Vol 339 ◽  
pp. 223-226
Author(s):  
Yu Jing Jia ◽  
Guang Zhen Cheng ◽  
Ying Jun Dai
Keyword(s):  
High Reliability ◽  
Hydraulic Drive ◽  
Control Program ◽  
Programmable Logic Controller ◽  
Hydraulic Cylinder ◽  
Programmable Logic ◽  
Hydraulic Systems ◽  
Direct Drive ◽  
Electrical Control ◽  
Working Principle

This essay will introduce a impellent tramcar machine, used for mining enterprises’ vertical shaft hoisting transportation system, which is used to put tub into the cage, or pull it from the cage. The mechanical impellent tramcar machine are widely used at present, it rely on the direct-drive motor, there are two types of traction, one is towed by the sprocket and chain anther is towed by the reel and wire, whatever we use which type, both the traction drive components are exposed, the environment dust will lead to poor lubrication, running noise, shock and vibration significantly, poor stability. To overcome the mechanical impellent tramcar machine of these shortcomings, developed the hydraulic impellent tramcar machine, the hydraulic cylinder as the executing agency, the programmable logic controller to achieve electrical control, designed hydraulic systems and PLC control program, analyzed the impellent tramcar machine Structure and working principle, point out that the use of programmable logic controller, programming is easy, flexible, programmable logic controllers cater to the industrial production sites, with great anti-interference ability, hydraulic drive compact, smooth and high reliability.

Programmable Logic Controller Program Design Method Research Based on PLC

2015 ◽  
Vol 713-715 ◽  
pp. 1281-1284
Author(s):  
Li Wei Wang
Keyword(s):  
Petri Net ◽  
Program Design ◽  
Design Method ◽  
Programmable Logic Controller ◽  
Programming Method ◽  
Engineering Method ◽  
Programmable Logic ◽  
Practical Engineering ◽  
Working Principle ◽  
Plc Programming

The working principle of Programmable Logic Controller (PLC) is introduced. Three kinds of PLC programming method, logic based method, function based method and Petri Net based method are emphasized. The example is also given. It also points out that function based PLC programming method is a practical engineering method.

Laser Tracker Based Volumetric Verification of Machine Tools

2012 ◽  
Vol 498 ◽  
pp. 151-156 ◽  
Author(s):  
S. Aguado ◽  
David Samper ◽  
J. Santolaria ◽  
Juan-José Aguilar-Martín
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Large Scale ◽  
Kinematic Model ◽  
Measurement Instrument ◽  
Laser Tracker ◽  
Transformation Matrices ◽  
Linear Optimisation ◽  
Working Principle ◽  
Optimisation Techniques

Different techniques of volumetric verification for long range machines are presented in this paper. Its working principle is based on captured points that can be distributed or not, through laser tracker (LT) or a measurement instrument that is generally of large scale. The developed model allows us to characterize the different errors in the machine tool to study, depending on its kinematics and geometry. Obtaining the transformation matrices that define the kinematics of the machine tool (MT) including the measurement system in the kinematic model, it is possible to relate the coordinates of the tool with the coordinates of LT. The best combination of parameters, techniques and models were obtained through the realization of a large number of synthetic tests based on non linear optimisation techniques

scholarly journals A new measurement system to determine stiffness distribution in machine tool workspace

2021 ◽  
Vol 21 (2) ◽  
Author(s):  
Piotr Pawełko ◽  
Daniel Jastrzębski ◽  
Arkadiusz Parus ◽  
Joanna Jastrzębska
Keyword(s):  
Signal Processing ◽  
Machine Tool ◽  
Measurement System ◽  
Machine Tools ◽  
Static Stiffness ◽  
Stiffness Coefficients ◽  
Innovative System ◽  
Working Principle ◽  
Determination Methods ◽  
Stiffness Distribution

AbstractThis paper presents an innovative system determining machine tool quasi-static stiffness in machining space, so-called Stiffness Workspace System (SWS). The system allows for the assessment of the accuracy of a machine which has become a vital aspect over past years for machine tool manufacturers and users. Since machine tools static stiffness is one of the main criteria using to evaluate the machines' quality, it is crucial to highlight the relevance of experimental and analytical stiffness determination methods. Therefore, the proposed method is applied to estimate the spatial variation of static stiffness in the machine tool workspace. This paper describes the SWS system—its design, working principle, mounting conditions and signal processing. The major advantage of the system is the capability to apply forces of controlled magnitude and orientation as well as simultaneously measure the resulting displacements. The obtained results give possibility to estimate and evaluate static stiffness coefficients depending on the position and direction under loaded conditions. The results confirm the validity of the analyses of spatial stiffness distribution in the machine workspace.

scholarly journals Forward Kinematics Model for Evaluation of Machining Performance of Robot Type Machine Tool

2021 ◽  
Vol 15 (2) ◽  
pp. 215-223
Author(s):  
Akio Hayashi ◽  
Hiroto Tanaka ◽  
Masato Ueki ◽  
Hidetaka Yamaoka ◽  
Nobuaki Fujiki ◽  
...  
Keyword(s):  
Machine Tool ◽  
Machine Tools ◽  
Geometric Model ◽  
Forward Kinematics ◽  
Machining Accuracy ◽  
Machining Performance ◽  
Machined Surface ◽  
Kinematics Model ◽  
Tool Posture ◽  
Type Machine

Robot-type machine tools are characterized by the ability to change the tool posture and machine itself with a wider motion range than conventional machine tools. The motion of the robot machine tool is realized by simultaneous multi-axis control of link mechanisms. However, when the robot machine tool performs a general milling process, some problems that affect the machining accuracy occur. Moreover, it is difficult to identify the motion errors of each axis, which influence machining accuracy. Thus, it is difficult to adjust the servo gain and alignment error. In addition, the machining performance is unidentified because of the rigidity differences when the posture changes. In this study, the focus was on robot-type machine tools consisting of a serial and a parallel link mechanism. A geometric model is described, and the forward kinematics model is derived based on the geometric model. Machining tests were then carried out to evaluate the machining accuracy by measuring the machined surfaces and the simulated motion of the tool posture based on the proposed forward kinematics model to identify the mechanism that affects the machined surface roughness and surface waviness. As a result, it was shown that the proposed model can separate and reproduce the behavior of each axis of the machine. Finally, it was clarified that the behavior of the second axis has a great influence on the tool posture and machined surface.

Using the Microcontroller and the PLC in a RPP Robot Control

2012 ◽  
Vol 463-464 ◽  
pp. 1721-1724
Author(s):  
Laurean Bogdan
Keyword(s):  
Machine Tools ◽  
Robot Control ◽  
Industrial Robot ◽  
Programmable Logic Controller ◽  
Numerical Control ◽  
Programmable Logic ◽  
Industrial Systems ◽  
Classical Systems ◽  
Control Equipment ◽  
And Control

This paper presents some aspects regarding the possibility of combining microcontroller and programmable logic controller (PLC) for robot control. The RPP robot is designed and manufactured within the Faculty of Engineering from “Lucian Blaga” University of Sibiu, as a patent: BRAŢ TELESCOPIC, Nr. 112418 B1, Int.CI.6 B 25 J 18/02, from 17.02.1997. Classical systems for programming and control of industrial robot are based on numerical control equipment, developed around a PC. Programmable Logic Controllers (PLC) haves proven to be viable alternatives to driving machine tools, industrial systems and Robots. Microcontrollers as computers offer advantage due to programmable inputs and outputs ports. The application of a microcontroller and PLC in control of a robot is presented in this paper.

The Task of Research on Trussed Type Machine Tool

2011 ◽  
Vol 396-398 ◽  
pp. 2424-2430
Author(s):  
Suo Xian Yuan ◽  
Dan Dan Shen ◽  
Xue Long Wen
Keyword(s):  
Machine Tool ◽  
Natural Frequency ◽  
Frequency Characteristic ◽  
Dynamic Stiffness ◽  
Dynamic Performance ◽  
Traverse Speed ◽  
Light Weight ◽  
Structure Investigation ◽  
New Type ◽  
Type Machine

An innovative machine tool of trussed type is introduced in this paper. It has many advantages such as light weight, rapid traverse speed and so on. But as a new type of machine tool in structure, investigation of it is not enough and further efforts are still needed. With the development of manufacturing technology, higher and higher demands of machine tool are required, and more efforts should be put on research in order to reinforce the performance of it, such as the static and dynamic stiffness, the dynamic performance and natural frequency, frequency characteristic, and so on.

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