Development of an Analyzing and Tuning Methodology for the CNC Parameters Based on Machining Performance

Abstract

This paper proposes the development of a tuning methodology which can set the proper values of the Computer Numerical Control (CNC) parameters to achieve the required machining performance. For the conventional operators of machine tools, the CNC parameters were hard to be adjusted to optimal settings, which was a complicated and time-consuming task. To save time in finding optimal CNC parameters, the objective of this research was to develop a practical methodology to tune the CNC parameters effectively for easy implementation in the commercial CNC controller. Firstly, the effect of the CNC parameters in the CNC controller on the tool-path planning was analyzed via experiments. The machining performance was defined in the high-speed (HS) mode, the high-accuracy (HP) mode, and the high-surface-quality (HQ) mode, according to the dynamic errors of several specified paths. Due to the CNC parameters that have a particularly critical effect on the dynamic errors, the relationship between the CNC parameters and the dynamic errors was validated by the measured data. Finally, the tuning procedure defined the anticipated dynamic errors for the three machining modes with the actual machine. The CNC parameters will correspond with anticipated dynamics errors based on several specified paths. The experimental results showed that the HS mode was the fastest to complete the path, and the completion time of the HP and HQ modes were increased by 37% and 6%, respectively. The HP mode had the smallest dynamic errors than other modes, and the dynamic errors of the HS and HQ modes are increased by 66% and 16%. In the HQ mode, the motion oscillation was reduce significantly, and the tracking error of the HS and HP modes were increased by 85% and 28%. The advantage of the methodology is that it simplifies set-up steps of the CNC parameters, making it suitable for practical machine applications.

Special Issue on “Machining Dynamics and Parameters Process Optimization”

“…They experimentally concluded that this method generates a smooth toolpath with an allowable fitting error. The optimal setting of the computer numerical control (CNC) plays an important role in the machining performance; specifically, Yu et al [6] developed a practical methodology to tune the CNC parameters effectively for easy implementation in a commercial CNC controller. They studied three turning machining modes: high-speed, high-accuracy and high-surface quality in terms of dynamics errors.…”

Novel Integration of CAPP in a G-Code Generation Module Using Macro Programming for CNC Application

“…The effects of process planning on production capacity and revenue increases have also been analyzed [5]. Additionally, CNC machining performance strongly depends on the cutting parameters that has been determined and assessed through complicated tasks, time-consuming the processes, and a high level of required engineering from calculation, simulation, or experimental works [6][7][8][9]. The recent development of computer software programs such as computer-aided design (CAD), computer-aided engineering (CAE), and computer-aided manufacturing (CAM) software has provided effective tools for parts design and manufacture.…”

Remanufacturing System with Chatter Suppression for CNC Turning

“…However, despite the existence of systems to support designers/technologists and operators, so far, no solution has been developed to copy/manufacture a part without specialist knowledge including part design, development of machining technology, and manufacturing the part using a CNC machine. Currently, due to the development of the idea of Industry 4.0 and the Internet of Things, systems combining the tasks of a designer, a technologist and an operator are the object of increased research [ 18 , 19 ]. The popularity of these systems will continue to grow.…”