MPC‐based robust contouring control for a robotic machining system

2020 ◽  
Author(s):  
Woraphrut Kornmaneesang ◽  
Shyh‐Leh Chen
Keyword(s):  
Robotic Machining ◽  
Contouring Control ◽  
Machining System

Reconfigurable robotic machining system controlled and programmed in a machine tool manner

2010 ◽  
Vol 53 (9-12) ◽  
pp. 1217-1229 ◽  
Author(s):  
Dragan Milutinovic ◽  
Milos Glavonjic ◽  
Nikola Slavkovic ◽  
Zoran Dimic ◽  
Sasa Zivanovic ◽  
...  
Keyword(s):  
Machine Tool ◽  
Robotic Machining ◽  
Machining System

scholarly journals High-Load Titanium Drilling Using an Accurate Robotic Machining System

2021 ◽  
pp. 140-152
Author(s):  
Robert Brownbill ◽  
Philip Silk ◽  
Peter Whiteside ◽  
Windo Hutabarat ◽  
Harry Burroughes
Keyword(s):  
Empirical Test ◽  
Large Diameter ◽  
High Load ◽  
Robotic Systems ◽  
Structural Stiffness ◽  
End Effector ◽  
Robotic Machining ◽  
Machining System ◽  
Structure Assembly ◽  
Test Schedule

AbstractRobotic drilling systems have been used in the manufacture of large aerospace components for a number of years. Systems have been developed by several systems integrators in order to accurately drill materials from CFRP to Titanium. These systems, however, have been unable to achieve large diameter holes in Titanium due to reduced structural stiffness and end effector capabilities. Typically, large holes are either drilled using large cartesian CNC-controlled machines or drilled using automated drilling units (ADU). However, there is a pull from aerospace OEMS to move away from large monolithic machines, in favour of flexible robotic system. Flexible robotic systems provide a number of benefits for large structure assembly. The following report primarily outlines drilling trials conducted on the Accurate Robotic Machining System, during which holes from 25 mm to 32 mm ID were drilled in titanium implementing an empirical test schedule. Additionally, a discussion on the benefits of drilling large diameter holes using flexible robotic platforms.

scholarly journals Robotic High Speed Machining of Aluminum Alloys

2011 ◽  
Vol 188 ◽  
pp. 584-589 ◽  
Author(s):  
Imed Zaghbani ◽  
M. Lamraoui ◽  
V. Songmene ◽  
M. Thomas ◽  
M. El Badaoui
Keyword(s):  
Stability Criterion ◽  
High Speed ◽  
Spindle Speed ◽  
Machining Process ◽  
Robotic Machining ◽  
Machined Parts ◽  
Machining System ◽  
Using Data ◽  
Manufacturing Technologies ◽  
High Level

The robotic machining is one of the most versatile manufacturing technologies. Its emerging helped to reduce the machining cost of complex parts. However, its application is sometimes limited due to the low rigidity of the robot. This low stiffness leads to high level of vibrations that limit the quality and the precision of the machined parts. In the present study, the vibration response of a robotic machining system was investigated. To do so, a new method based on the variation of spindle speed was introduced for machining operation and a new process stability criterion (CS) based on acceleration energy distribution and force signal was proposed for analysis. With the proposed method the vibrations and the cutting force signals were collected and analyzed to find a reliable dynamic stability machining domain. The proposed criterion and method were validated using data obtained during high speed robotic machining of 7075-T6 blocks. It was found that the ratio of the periodic energy on the total energy (either vibrations or cutting forces) is a good indicator for defining the degree of stability of the machining process. Besides, it was observed that the spindle speed with the highest ratio stability criterion is the one that has the highest probability to generate the best surface finish. The proposed method is rapid and permits to avoid trial-error tests during robot programming.

scholarly journals Implicit force and position control to improve drilling quality in CFRP flexible robotic machining

2021 ◽  
Vol 68 ◽  
pp. 1123-1133
Author(s):  
Jinho Lee ◽  
Taehwa Hong ◽  
Chang-Hoon Seo ◽  
Yong Ho Jeon ◽  
Moon Gu Lee ◽  
...  
Keyword(s):  
Position Control ◽  
Robotic Machining ◽  
Drilling Quality

Usability of Web-Based Design and Manufacturing Systems: Case Study of Micro Machining

2005 ◽  
Author(s):  
Hyung-Jung Kim ◽  
Won-Shik Chu ◽  
Hyuk-Jin Kang ◽  
Sung-Hoon Ahn ◽  
Dong-Soo Kim ◽  
...  
Keyword(s):  
Manufacturing Systems ◽  
Processing Time ◽  
Micro Machining ◽  
User Friendliness ◽  
Web Based ◽  
Design And Manufacturing ◽  
Cad Cam ◽  
Machining System ◽  
Web Based System ◽  
The Web

In this paper, web-based design and manufacturing systems are compared with a commercial CAD/CAM system from the point of usability. The web-based systems included in this study were MIcro Machining System (MIMS) and SmartFab. In the MIMS architecture, a 3D model in STL format was read via a web browser, sent to the web server for toolpath planning, and NC codes were generated to be fed back to the designer through the web connection. In the SmartFab system, SolidWorks was used as the design interface with provided modified menus for micro machining. These additional menus were created by SolidWorks API that also provided web-based links to the toolpath planner. In the commercial CAD/CAM case, without using any web connection, SolidWorks or CATIA was used for design, and PowerMill was used as a CAM tool. For each design and manufacturing system, accessibility, user-friendliness, toolpath-reliability, and processing time were compared. Total 91 students tested these systems in undergraduate CAD class, and the feedback showed better performance of the web-based system in accessibility, user-friendliness, and processing time. However, reliability of the web-based system showed necessity of further improvement.

scholarly journals Implementation of a micro-electrical discharge machining system to fabricate TiO2 nanocolloid

Mechatronics ◽  
2021 ◽  
Vol 79 ◽  
pp. 102649
Author(s):  
Kuo-Hsiung Tseng ◽  
Kuo-Hui Chen ◽  
Chaur-Yang Chang ◽  
Yagus Cahyadi ◽  
Meng-Yun Chung
Keyword(s):  
Electrical Discharge ◽  
Electrical Discharge Machining ◽  
Micro Electrical Discharge Machining ◽  
Machining System

Videooptical Surface Shape and Integrity Estimation in Robots Machining

2013 ◽  
Vol 332 ◽  
pp. 270-275 ◽  
Author(s):  
Tadeusz Mikolajczyk
Keyword(s):  
Surface Roughness ◽  
Industrial Robot ◽  
Surface Shape ◽  
Engineering System ◽  
Machined Surface ◽  
Reflectivity Method ◽  
Machining System ◽  
Grinding Tool ◽  
Smart Machining ◽  
Usb Camera

Paper shows system to surface shape and quality control in machining using industrial robot. To surface control videooptical methods were used. Surface shape was controlled using the special reverse engineering system. To surface roughness measure machined surface reflectivity method was used. Used own constructions non contact system was equipped with red laser light and USB camera. Wrist of robot was equipped with grinding tool. In paper shows some algorithms of presented processes. Shown too examples of experiments results in surface roughness measure in start end of grinding process. First trials of presented system shows possibility to build smart machining system for finishing of surface with unknown shape.

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