Methodology to determine the wear on the cutting tool during milling-planning in a computer numerical control machining center

The acceleration/deceleration feedrate scheduling is one of the most important techniques in computer numerical control systems. Along with this technique, the bi-directional scanning technique is always employed. The bi-directional scanning technique consists of a backward scanning process followed by a forward scanning process. The two scanning processes in the conventional methods are executed in a serial manner by scanning through all the scheduling blocks one by one. Consequently, the feedrate scheduling will suffer from a heavy computational burden when there are massive blocks to be scanned, which deteriorates its real-time performance for computer numerical control machining. To alleviate the computational burden, a parallel acceleration/deceleration feedrate scheduling approach is proposed in this article. With this method, the scheduling blocks are splitted into several scheduling units and the feedrate for each of them is scheduled simultaneously. The feasibility of the proposed approach is validated through the feedrate scheduling for two widely used butterfly and helix paths. For a constructed example of feedrate scheduling, a significant acceleration ratio about 3.7 on a personal computer with a quad-core central processing unit is achieved.

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Development of a portable stereolithography device for computer numerical control machining centres

International Journal of Mechatronics and Manufacturing Systems ◽

10.1504/ijmms.2019.103478 ◽

2019 ◽

Vol 12 (3/4) ◽

pp. 211

Author(s):

Vasileios Sergis ◽

George Christopher Vosniakos

Keyword(s):

Computer Numerical Control ◽

Numerical Control ◽

Numerical Control Machining

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Digital twin control of multi-axis wood CNC machining center based on LinuxCNC

BioResources ◽

10.15376/biores.16.1.1115-1130 ◽

2020 ◽

Vol 16 (1) ◽

pp. 1115-1130

Author(s):

Aleksandar Rakic ◽

Sasa Zivanovic ◽

Zoran Dimic ◽

Mladen Knezevic

Keyword(s):

Control System ◽

Virtual Machines ◽

Computer Numerical Control ◽

Cnc Machining ◽

Numerical Control ◽

Machining Process ◽

Programming System ◽

Digital Twin ◽

Machining Center ◽

Computer Aided

This paper presents an application of an open architecture control system implemented on a multi-axis wood computer numerical control milling machining center, as a digital twin control. The development of the digital twin control system was motivated by research and educational requirements, especially in the field of configuring a new control system by “virtual commissioning”, enabling the validation of the developed controls, program verification, and analysis of the machining process and monitoring. The considered wood computer numerical control (CNC) machining system is supported by an equivalent virtual machine in a computer-aided design and computer-aided manufacturing (CAD/CAM) environment, as well as in the control system, as a digital twin. The configured virtual machines are used for the verification of the machining program and programming system via machining simulation, which is extremely important in multi-axis machining. Several test wood workpieces were machined to validate the effectiveness of the developed control system based on LinuxCNC.

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Discussion on Reverse Design of Components with Complex Curved Surface and Computer Numerical Control Machining

Journal of Electronic Research and Application ◽

10.26689/jera.v2i4.508 ◽

2018 ◽

Vol 2 (4) ◽

Author(s):

Dapeng Fu ◽

Xinyu Lv ◽

Shuangyang Jiang

Keyword(s):

Data Processing ◽

Point Cloud ◽

Tool Path ◽

Computer Numerical Control ◽

Numerical Control ◽

Curved Surface ◽

Surface Generation ◽

Point Cloud Data ◽

Numerical Control Machining ◽

Cloud Data

Abstract: With the continuous development and advancement of science and technology, the work of tool path planning has received extensive attention. Among them, curved surface generation and data processing are the focus of management and design, which necessitate the full application of reverse design of complex curved surface components to complete numerical control processing, effective optimization and upgrading, integration the tasks of point cloud data collection and point cloud data processing to ensure that the corresponding computer numerical control machining model can exert its actual value. This paper briefly analyzes the basic principles of curved surface reconstruction as well as discusses the reverse design of complex curved components and the experimental processes and results that involved computer numerical control machining, which serves the purpose as reference only.

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