Virtual horizontal machining center LOLA HBG 80 for program verification and monitoring

Ovaj rad opisuje konfigurisanje virtuelnog horizontalnog obradnog centra LOLA HBG80 u okviru sistema za programiranje i verifikaciju, kao i u okviru sistema otvorene arhitekture upravljanja. Horizontalni obradni centar LOLA HBG 80 podržan je ekvivalentnom virtuelnom mašinom u CAD/CAM okruženju (PTC Creo i Catia), STEP-NC mašinskom okruženju, kao i u upravljačkom sistemu. Virtuelna simulacija je od suštinske važnosti za obradu, a razvijene virtuelne mašine koriste se za verifikaciju programa i monitoring procesa obrade. Virtuelna mašina u sistemu za programiranje omogućava verifikaciju programa pre slanja na stvarnu mašinu i može da uključuje verifikaciju putanje alata (CLF-Cutter Location File) i verifikaciju G-koda. U radu se takođe govori o mogućnosti primene novog metoda programiranja poznatog kao STEP-NC i pripremi odgovarajućeg okruženja koje uključuje virtuelnu mašinu. Virtuelna mašina u sistemu upravljanja predstavlja poslednji nivo za konačnu verifikaciju programa, kao i sistem za nadzor procesa.This paper describes configuring the virtual horizontal machining center LOLA HBG80 within the programming and verification system and the open architecture control system. The horizontal machining center LOLA HBG 80 is represented by an equivalent virtual machine in a CAD/CAM environment (PTC Creo and Catia), STEP-NC Machine environment, and the control system. Virtual simulation is essential for machining, and the developed virtual machines are used for program verification and monitoring of the machining process. The virtual machine in the programming system allows the verification of the program before sending it to the real machine and includes verification of the tool path (CLF-Cutter Location File) and G-code. The paper also discusses the possibility of applying a new programming method known as STEP-NC and preparing an adequate environment that includes a virtual machine. The virtual machine in the control system represents the last level for the final program verification and the process monitoring system

Virtual horizontal machining center LOLA HBG 80 for program verification and monitoring

Ovaj rad opisuje konfigurisanje virtuelnog horizontalnog obradnog centra LOLA HBG80 u okviru sistema za programiranje i verifikaciju, kao i u okviru sistema otvorene arhitekture upravljanja. Horizontalni obradni centar LOLA HBG 80 podržan je ekvivalentnom virtuelnom mašinom u CAD/CAM okruženju (PTC Creo i Catia), STEP-NC mašinskom okruženju, kao i u upravljačkom sistemu. Virtuelna simulacija je od suštinske važnosti za obradu, a razvijene virtuelne mašine koriste se za verifikaciju programa i monitoring procesa obrade. Virtuelna mašina u sistemu za programiranje omogućava verifikaciju programa pre slanja na stvarnu mašinu i može da uključuje verifikaciju putanje alata (CLF-Cutter Location File) i verifikaciju G-koda. U radu se takođe govori o mogućnosti primene novog metoda programiranja poznatog kao STEP-NC i pripremi odgovarajućeg okruženja koje uključuje virtuelnu mašinu. Virtuelna mašina u sistemu upravljanja predstavlja poslednji nivo za konačnu verifikaciju programa, kao i sistem za nadzor procesa.This paper describes configuring the virtual horizontal machining center LOLA HBG80 within the programming and verification system and the open architecture control system. The horizontal machining center LOLA HBG 80 is represented by an equivalent virtual machine in a CAD/CAM environment (PTC Creo and Catia), STEP-NC Machine environment, and the control system. Virtual simulation is essential for machining, and the developed virtual machines are used for program verification and monitoring of the machining process. The virtual machine in the programming system allows the verification of the program before sending it to the real machine and includes verification of the tool path (CLF-Cutter Location File) and G-code. The paper also discusses the possibility of applying a new programming method known as STEP-NC and preparing an adequate environment that includes a virtual machine. The virtual machine in the control system represents the last level for the final program verification and the process monitoring system

Configuring of 3-axis vertical CNC machine for rapid prototyping with two translatory and one rotary axes

This paper describes the configuration of a 3-axis vertical CNC machine tool for rapid prototyping with one rotary and two translational axes. The machine works in a polar-cylindrical coordinate system. The structure of the machine is C'OXZ. The virtual machine model is configured in the PTC Creo software environment. After configuring the virtual machine, the simulation of the CLF-based was performed in the mentioned software environments, and then the verification according to the G-code program in the Vericut software environment was performed. Programming and control of the configured prototype machine are realized in the LinuxCNC software environment, which is based on the PC platform. Also, in this paper, digital twin of machine realized in a python software environment is shown. The presented results show the proper functioning of the whole system

Configuring of 3-axis vertical CNC machine for rapid prototyping with two translatory and one rotary axes

This paper describes the configuration of a 3-axis vertical CNC machine tool for rapid prototyping with one rotary and two translational axes. The machine works in a polar-cylindrical coordinate system. The structure of the machine is C'OXZ. The virtual machine model is configured in the PTC Creo software environment. After configuring the virtual machine, the simulation of the CLF-based was performed in the mentioned software environments, and then the verification according to the G-code program in the Vericut software environment was performed. Programming and control of the configured prototype machine are realized in the LinuxCNC software environment, which is based on the PC platform. Also, in this paper, digital twin of machine realized in a python software environment is shown. The presented results show the proper functioning of the whole system

Automatic compensating cleanup operation

Journal ArticleToday's part geometries are becoming ever more complex and require more accurate tool path to manufacture. Machining process efficiency is also a major consideration for designers as well as manufacturing engineers. Although the current advanced CAD/CAM systems have greatly improved the efficiency and accuracy of machining with the introduction of Numerically Controlled (NC) machining, excessive material may still be left on the finished part due to machining constraints, including the inaccessibility of the designed part geometry with respect the cutter, machine motion constraints like ramp angles, specific cutting patterns, etc. Polishing operations such as grinding and hand finishing are quite time consuming and expensive and may damage the surface of the part or introduce inaccuracies because of human errors. Although most of the existing machining approaches attempt to reduce such excessive restmaterials by modifying NC tool paths, none of them is satisfactory. They can be time consuming, error prone, computationally intensive, too complicated to implement, and limited to certain problem domains. A compensating cleanup tool path will be developed in this research to automatically remove these excessive material from the finish part. This method greatly reduces the burden of hand finishing and polishing and also reduces the error and complexities introduced in manually generating cleanup tool paths in the shop floor. More important, the tool path generated by this method will reduce the machining time and increase tool life compared with optimized tool path which left no excessive material behind

Efficient integration of software components for scientific simulations

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Design for Additive Manufacturing: Tool Review and a Case Study

This paper aims to collect in a structured manner different computer-aided engineering (CAE) tools especially developed for additive manufacturing (AM) that maximize the capabilities of this technology regarding product development. The flexibility of the AM process allows the manufacture of highly complex shapes that are not possible to produce by any other existing technology. This fact enables the use of some existing design tools like topology optimization that has already existed for decades and is used in limited cases, together with other novel developments like lattice design tools. These two technologies or design approaches demand a highly flexible manufacturing system to be applied and could not be used before, due to the conventional industrial process limitations. In this paper, these technologies will be described and combined together with other generic or specific design tools, introducing the study case of an additive manufactured mechanical design of a bicycle stem