Theory and Design of CNC Systems

Suh, Suk-Hwan; Kang, Seong-Kyoon; Chung, Dae-Hyuk; Stroud, Ian

doi:10.1007/978-1-84800-336-1

Cited by 147 publications

(93 citation statements)

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“…This data format is commonly known as G-code. G-code was created at MIT in the late 1950s and, like CAD, rose in popularity through the 1970s [34]. Today, G-code is the near-universal format for programming computer-based NC machines.…”

Section: Background and Motivationmentioning

confidence: 99%

Embedding X.509 Digital Certificates in Three-Dimensional Models for Authentication, Authorization, and Traceability of Product Data

Hedberg

Krima²,

Camelio

2016

Journal of Computing and Information Science in Engineering

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Exchange and reuse of three-dimensional (3D)-product models are hampered by the absence of trust in product-lifecycle-data quality. The root cause of the missing trust is years of “silo” functions (e.g., engineering, manufacturing, quality assurance) using independent and disconnected processes. Those disconnected processes result in data exchanges that do not contain all of the required information for each downstream lifecycle process, which inhibits the reuse of product data and results in duplicate data. The X.509 standard, maintained by the Telecommunication Standardization Sector of the International Telecommunication Union (ITU-T), was first issued in 1988. Although originally intended as the authentication framework for the X.500 series for electronic directory services, the X.509 framework is used in a wide range of implementations outside the originally intended paradigm. These implementations range from encrypting websites to software-code signing, yet X.509 certificate use has not widely penetrated engineering and product realms. Our approach is not trying to provide security mechanisms, but equally as important, our method aims to provide insight into what is happening with product data to support trusting the data. This paper provides a review of the use of X.509 certificates and proposes a solution for embedding X.509 digital certificates in 3D models for authentication, authorization, and traceability of product data. This paper also describes an application within the Aerospace domain. Finally, the paper draws conclusions and provides recommendations for further research into using X.509 certificates in product lifecycle management (PLM) workflows to enable a product lifecycle of trust.

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Section: Background and Motivationmentioning

confidence: 99%

Embedding X.509 Digital Certificates in Three-Dimensional Models for Authentication, Authorization, and Traceability of Product Data

Hedberg

Krima²,

Camelio

2016

Journal of Computing and Information Science in Engineering

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show abstract

“…They are found between the interpreter and the look-ahead module, between the look-ahead module and the acceleration/deceleration (acc/dec) controller, between the acc/dec controller and the rough interpolator, between the rough interpolator and the mapping module and between the fine interpolator and the position controller. 18 First, G-codes generated by the automatic programming software implemented on the ARM microcontroller are downloaded to the data buffer of the TMS320C6713 DSP via the HPI, after data structure conversion. The buffer ''over flag'' decides whether to continue downloading data or not, based on the consumption of data.…”

Section: Egb Embedded In a Hobbing Cncmentioning

confidence: 99%

A new electronic gearbox for gear hobbing machines

Tian

Han

Xia

2015

Proceedings of the Institution of Mechanical Engineers, Part B:

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This article presents a new kind of software-defined electronic gearbox for gear hobbing based on a theoretical model of the hobbing process. The electronic gearbox implementation and structure are studied in an embedded numerical control system (numerical control/computer numerical control). Data flow among the electronic gearbox modules is also analyzed in the numerical control system. Special G-codes with parameters are designed, and the electronic gearbox control implemented through numerical control programming is realized in a custom gear hobbing numerical control system. In addition, two different hobbing methods (axial and diagonal) are tested on the computer numerical control platform. Results show that the hobbing computer numerical control with the proposed electronic gearbox functions accurately, and error is measured using tracking errors in different axes and gear pitch error of the machined gear. As will be shown, the gear pitch error was found to be 0.0147 mm for axial hobbing and 0.0176 mm for diagonal hobbing.

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“…A conventional numerical control kernel (NCK) usually consists of a variety of standardized modules that are sequentially executed in a synchronized schedule [6]. MMI facilitates the manipulation and interpolation plays an important role in generating axis movement data from CLdata.…”

Section: Cnc Layermentioning

confidence: 99%

“…The simulation of interpolation process helps to develop, compare and verify the controller of a new cutting machine. The conventional interpolators include hardware interpolator and software interpolator [6]. In order to smooth the movement of a machine, the pre-and post-acceleration and deceleration should be implemented.…”

Section: Interpolation Centermentioning

confidence: 99%

A universal virtual manufacturing system for cutting machines

Xiao

Liu

Loeis

2010

International Conference on Advanced Technology of Design and Manufacture (ATDM 2010)

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A virtual manufacturing (VM) system plays an important role before machining in reality. The VM systems currently used in CNC field are mainly for typical machine tools, whereas the development of using an industrial robot for cutting task has extended the cutting machine into a more generalized application. However, the current VM system is insufficient to fulfill the demand of different mechanical structures and uniform machine tools and cutting robots. This paper presents a universal 3D simulation system for machine tools and cutting robots with different mechanical structures. All machine tools and cutting robots are synthesized as cutting machines. Robotics methodologies like D-H (Denavit-Hartenberg) convention, forward and inverse kinematics; CNC functionalities such as CL-data interpreter, various interpolation manners, are combined as the core of the system. Serial and parallel structured machine tools and cutting robots are simulated as typical case studies. The results show a great uniformity of the system to different mechanical structures.

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Theory and Design of CNC Systems

Cited by 147 publications

References 0 publications

Embedding X.509 Digital Certificates in Three-Dimensional Models for Authentication, Authorization, and Traceability of Product Data

Embedding X.509 Digital Certificates in Three-Dimensional Models for Authentication, Authorization, and Traceability of Product Data

A new electronic gearbox for gear hobbing machines

A universal virtual manufacturing system for cutting machines

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