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This paper presents programming methods and program verification for the 3-axis reconfigurable hybrid kinematics machine MOMA V3, which represents an educational desktop milling machine with a horizontal position of the main spindle. The paper considers the different programming and program verification methods. For programming used CAD/CAM system PTC Creo, specialized CAM software CUT3D and new programming method based on STEP-NC. Program verification is based on tool path simulation, material removal simulation and virtual machine simulation. The paper presented the virtual machine in the programming system and the virtual machine integrated with the LinuxCNC control system. Final verification was achieved during the testing on machine by machining the selected workpieces which programmed with different programming methods. [ABSTRACT FROM AUTHOR]

The paper proposes a programming methodology for advanced manufacturing based on STEP-NC, a compliant to multi-axis CNC woodworking machining center. The equivalent virtual machine in the CAD/CAM, STEP-NC environment, is developed as a part of a programming system for considered CNC woodworking machining center. STEP-NC aims to provide a digital thread for CNC manufacturing running in the STEP-NC System world via the Internet that can enable advanced e-Manufacturing. Virtual machine as a digital twin is configured and implemented into the control system based on LinuxCNC, but configured virtual machine as a Web interface based on STEP-NC, also. The developed methodology is validated through machining simulation using the configured digital twin in the control system and machining experiments on the real machine. [ABSTRACT FROM AUTHOR]

Copyright of FME Transactions is the property of University of Belgrade, Faculty of Mechanical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of FME Transactions is the property of University of Belgrade, Faculty of Mechanical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

Copyright of FME Transactions is the property of University of Belgrade, Faculty of Mechanical Engineering and its content may not be copied or emailed to multiple sites or posted to a listserv without the copyright holder's express written permission. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)

STEP-NC is the next generation of data models between CAD/CAM and CNC systems and it aims at providing a digital thread for CNC manufacturing. After more than a decade of investigation, the STEP-NC technology is still underdeveloped. As the industrial robots are getting more and more capable of taking on machining operations, it is necessary to couple the robot for machining towards new STEP-NC standards. The paper presents an indirect method of industrial robot programming for machining tasks by applying standard ISO 10303-238. A methodology has been established to enable programming and simulation of industrial robots for machining, where information on the machining project is saved at a high information level in the STEP-NC format, which can be readily exchanged between different users for machining, either on machine tools or robots for machining. The methodology also includes the developed robot language converter for STEP-NC programme translation to robot programming language for machining tasks. Developed programming method verification has been performed by simulation in STEP-NC Machine environment using configured virtual robot and after that through several real experiments of drawing the toolpath in 3-axis machining tasks on available vertical articulated robot. [ABSTRACT FROM AUTHOR]

This paper presents configuring of a virtual reconfigurable 5-axis machine tool for the purpose of realizing the simulation of the machine according to the running program. Machining simulation is realized in the CAD/CAM environment, when the machine works according to the CL files based running program, and in the STEP-NC Machine environment, when the machine works according to the STEP-NC format based running program. In this way, a possibility of program verification for the machine is obtained, which includes a complete virtual model of the machine configured with the corresponding kinematic relations. Verification of the virtual machine, in both environments, has been done by simulations of machining several test workpieces based on the running program. [ABSTRACT FROM AUTHOR]

Industrial robots are promising cost-effective and flexible alternatives for multi-axis milling applications in machining of complex parts of light materials with lower tolerances, having freeform surfaces. As it is well-known, the poor accuracy, stiffness, and the complexity of programming are the most important limiting factors for wider adoption of robotic machining in machine shops. The paper presents the developed method for off-line compensation of machining robot tool tip static displacements as a dominant part of cutting force-induced errors. The developed method is based on modification of programmed trajectory in G-code. Off-line modification of programmed trajectory is performed according to the predicted static tool tip displacements calculated based on developed robot compliance model and cutting forces predicted by mechanistic model. The obtained experimental results show the relevance of developed method since the machining errors could be significantly reduced. This allows the desired accuracy of robot machining to converge towards nominal specifications. [ABSTRACT FROM AUTHOR]