Generalized Kinematics Error Prediction of CNC Milling Machines by Using Simulation Method

2021 ◽  
pp. 89-100
Author(s):  
Hung Q. Nguyen ◽  
Toan B. Pham ◽  
Luan C. Vuong ◽  
Duong N. Nguyen ◽  
Nhi K. Ngo
Keyword(s):  
Simulation Method ◽  
Error Prediction ◽  
Cnc Milling ◽  
Milling Machines

One Touch Workpiece Verification System for CNC Machining Using a Low-Cost Computer Vision Approach

2016 ◽  
Author(s):  
Maxwell K. Micali ◽  
Hayley M. Cashdollar ◽  
Zachary T. Gima ◽  
Mitchell T. Westwood
Keyword(s):  
Computer Vision ◽  
Low Cost ◽  
Cnc Machining ◽  
Potential Operator ◽  
Cnc Milling ◽  
Machining Processes ◽  
Loop Control ◽  
Operator Error ◽  
Verification System ◽  
Milling Machines

While CNC programmers have powerful tools to develop optimized toolpaths and machining plans, these efforts can be wholly undermined by something as simple as human operator error during fixturing. This project addresses that potential operator error with a computer vision approach to provide coarse, closed-loop control between fixturing and machining processes. Prior to starting the machining cycle, a sensor suite detects the geometry that is currently fixtured using computer vision algorithms and compare this geometry to a CAD reference. If the detected and reference geometries are not similar, the machining cycle will not start, and an alarm will be raised. The outcome of this project is the proof of concept of a low-cost, machine/controller agnostic solution that is applied to CNC milling machines. The Workpiece Verification System (WVS) prototype implemented in this work cost a total of $100 to build, and all of the processing is performed on the self-contained platform. This solution has additional applications beyond milling that the authors are exploring.

scholarly journals Enhancement of Teaching Design of CNC Milling Machines

2015 ◽  
Vol 176 ◽  
pp. 571-577 ◽  
Author(s):  
Antonín Max ◽  
Václava Lašová ◽  
Šimon Pušman
Keyword(s):  
Cnc Milling ◽  
Teaching Design ◽  
Milling Machines

scholarly journals Modular fastening system and tool–holder working unit for incremental forming

2019 ◽  
Vol 299 ◽  
pp. 05005
Author(s):  
Melania Tera ◽  
Claudia–Emilia Gîrjob ◽  
Cristina–Maria Biriș ◽  
Mihai Crenganiș
Keyword(s):  
Machine Tools ◽  
Incremental Forming ◽  
Industrial Robot ◽  
Industrial Robots ◽  
Cnc Milling ◽  
End Effector ◽  
Tool Holder ◽  
Cnc Milling Machine ◽  
Milling Machines ◽  
Sheet Metal Workpiece

Incremental forming can be usually unfolded either on CNC milling machine–tools or serial industrial robots. The approach proposed in this paper tackles the problem of designing a modular fastening system, which can be adapted for both above mentioned technological equipment. The fastening system of the sheet–metal workpiece is composed of a fixing plate and a retaining plate. The fixing and retaining plates will be made up of different individual elements, which can be easily repositioned to obtain different sizes of the part. Moreover, the fastening system has to be able to be positioned either horizontally (to be fitted on CNC milling machines) or vertically (to be fitted on industrial robots. The paper also presents the design of a tool–holder working unit which will be fitted on KUKA KR 210 industrial robot. The working unit will be mounted as end–effector of the robot and will bear the punch, driving it on the processing toolpaths.

Modeling Research for Active Control of Coupled Vibration between Multiple CNC Milling Machines and Flexible Foundation

2011 ◽  
Vol 105-107 ◽  
pp. 675-679 ◽  
Author(s):  
Fu Dong Ma ◽  
Yao Gang Li ◽  
Qian Lin Peng
Keyword(s):  
Degrees Of Freedom ◽  
Vibration Isolation ◽  
Lagrange Equation ◽  
Real Life ◽  
Traditional Theory ◽  
Cnc Milling ◽  
Isolation System ◽  
Milling Machines ◽  
Flexible Foundation ◽  
Multiple Machines

In real life many agencies are using the flexible foundation as a base of support, such as ship hull or deck, the chassis of car, and machine tools work on stairs. With the traditional theory, the mathematical model between machine and based simplified as single-degree-of-freedom, assuming foundation is a rigid, and many investigate for a single machine, ignoring the dynamic coupling of base and the coupling characteristics between vibrators. This paper build a dynamics model with flexible basis and multiple machines, it’s multi-degrees-of-freedom model. The foundation is flexibled. On this basis builiding a model about multiple machines, flexible foundation and vibration isolation system. This paper resolve to the problem of the machine work on stair, research the system include vibrator, actuators, and flexible foundation. Using Lagrange equation deduce dynamics equation. Express every factor in eqution,deduced the state and space expression.Take prepare for optimal and system simulation.

scholarly journals Evaluation of Cutting Stability and Electronic Accuracy of CNC Milling Machines

2021 ◽  
pp. 0281-0288
Author(s):  
Mailis Zimmermann ◽  
Marten Madissoo ◽  
Tonu Leemet
Keyword(s):  
Cnc Milling ◽  
Cutting Stability ◽  
Milling Machines

scholarly journals ANN Based Tool Condition Monitoring System for CNC Milling Machines

2011 ◽  
pp. 461-468
Author(s):  
Georgina del Carmen Mota-Valtierra ◽  
◽  
Luis Alfonso Franco-Gasca ◽  
Gilberto Herrera-Ruiz ◽  
Gonzalo Macias-Bobadilla ◽  
...  
Keyword(s):  
Monitoring System ◽  
Condition Monitoring ◽  
Tool Condition Monitoring ◽  
Cnc Milling ◽  
Tool Condition ◽  
Milling Machines ◽  
Condition Monitoring System

scholarly journals Improving the accuracy of free-form surface machining on CNC milling machines

Mechanik ◽  
2018 ◽  
Vol 91 (12) ◽  
pp. 1100-1103
Author(s):  
Andrzej Werner
Keyword(s):  
Geometric Model ◽  
Free Form ◽  
Cnc Milling ◽  
Surface Machining ◽  
Machining Errors ◽  
Milling Machines ◽  
Coordinate Measurements ◽  
Free Form Surface ◽  
Free Form Surfaces

This article presents a method of increasing the accuracy of the production of free-form surfaces. This method is based on the execution of coordinate measurements of the pre-treated object and reconstruction of its nominal geometric model in order to compensate existing machining errors.

Look-Ahead to Minimize Energy Costs of CNC Milling Machines for a Volatile Energy Price

2019 ◽  
Author(s):  
Sebastian Kehne ◽  
Christian Fimmers ◽  
Lukas Grundel ◽  
Felix Zender ◽  
Alexander Epple ◽  
...  
Keyword(s):  
Energy Price ◽  
Energy Costs ◽  
Cnc Milling ◽  
Look Ahead ◽  
Milling Machines
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