scholarly journals CNC Router with Screw-Nut Transmissions

2018 ◽  
Vol 18 (2) ◽  
pp. 40-42
Author(s):  
M.A. Păun ◽  
A.A. Doroftei ◽  
G.A. Tudor ◽  
I. Moldovan
Keyword(s):  
Computer Numerical Control ◽  
Numerical Control ◽  
Optimal Price ◽  
Great Precision ◽  
Different Types ◽  
Cnc Router

AbstractThe CNC (Computer numerical control) is a machine that processes different kinds of materials at different types of precisions, determined by the system used to realize the transmission from the motor to the axes. In our project, we used the screw nut transmission because it offers a great precision and it has an optimal price-quality ratio.

An Low-Cost Integrated Control System for the 3-Axis Computer Numerical Control (CNC) Router Machine

2017 ◽  
Vol 23 (5) ◽  
pp. 4388-4391 ◽  
Author(s):  
Jayson P Rogelio ◽  
Renann G Baldovino ◽  
Allan John S Limson ◽  
Fred P Liza ◽  
Jonathan Q Puerto
Keyword(s):  
Control System ◽  
Low Cost ◽  
Integrated Control ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Cnc Router ◽  
Integrated Control System

Some Aspects of Computer Numerical Control With Reference to Interpolation

1976 ◽  
Vol 98 (3) ◽  
pp. 883-889 ◽  
Author(s):  
D. A. Milner
Keyword(s):  
Computer Numerical Control ◽  
Numerical Control ◽  
The Other ◽  
Vital Functions ◽  
Different Types ◽  
The Way

In the production of a component by numerical control various stages require relatively different volumes of data, as is indicated in the paper. Three different types of interpolation are indicated and corresponding program sizes obtained. Finally the “way ahead” regarding interpolation is given and mention made of the other two vital functions, namely, the control of acceleration/deceleration and the closing of the position loop.

scholarly journals KARAKTERISTIK DINAMIK COMPUTER NUMERICAL CONTROL MILLING ROUTER 4 AXIS

2021 ◽  
Vol 9 (02) ◽  
pp. 33-43
Author(s):  
Mochamad Saidiman ◽  
Muhammad Satya Nugroho ◽  
Subekti ◽  
Abdul Hamid
Keyword(s):  
Computer Numerical Control ◽  
Numerical Control ◽  
Cnc Router ◽  
40 Hz

Penelitian ini dilakukan untuk mengetahui karakteristik dinamik Computer Numerical Control Router 4 Axis dengan menggunakan metode Bump Test. Pengujian dilakukan dengan cara menempatkan sensor Accelerometer Khoctek 107b pada Mesin CNC Router 4 Axis pada sumbu x, y, z dikerangka atas, kerangka bawah, dan spindle. Hasil eksperimen pengujian getaran Mesin CNC dibagi kedalam dua proses pengujian yaitu kondisi normal dan kondisi rusak pada masing-masing sumbu. Diperoleh bahwa pengujian ini menghasilkan frekuensi global dimana frekuensi 8 Hz, 24 Hz, dan 40 Hz muncul disetiap sumbu x, y, dan z pada kerangka atas, kerangka bawah dan spindle. Pada mesin dengan kondisi rusak muncul frekuensi lokal pada sumbu y kerangka atas sebesar 5 Hz. Kemudian pada sumbu y spindle muncul frekuensi lokal sebesar 10 Hz, 56 Hz, dan 88 Hz. Munculnya frekuensi lokal menandakan adanya kerusakan pada CNC oleh sumbu tertentu selain frekuensi global.

Computer numerical control of electron beam machining equipments

1977 ◽  
Vol 10 (16) ◽  
pp. 655-662
Author(s):  
A. Schuler ◽  
W. Oberreiter ◽  
H. Hoffmann
Keyword(s):  
Electron Beam ◽  
Computer Numerical Control ◽  
Numerical Control

scholarly journals Supply Chain Coordination Contracts under Double Sided Disruptions Simultaneously

2015 ◽  
Vol 2015 ◽  
pp. 1-9 ◽  
Author(s):  
Huan Zhang ◽  
Yang Liu ◽  
Jingsi Huang
Keyword(s):  
Supply Chain ◽  
Supply Chain Coordination ◽  
Optimal Price ◽  
Supply Chain System ◽  
Pricing Policy ◽  
Product Cost ◽  
Numerical Examples ◽  
Supply Chain Contracts ◽  
Different Types ◽  
Key Factor

Supply chain coordination models are developed in a two-echelon supply chain with double sided disruptions. In a supply chain system, the supplier may suffer from the product cost disruption and the retailer suffers from the demand disruption simultaneously. The purpose of this study is to design proper supply chain contracts, under which the supply chain with double sided disruption can be coordinated. Firstly, the centralized decision-making models are applied to find the optimal price and quantity under three cases as the baseline. The different cases are divided by the different relationship between the product cost disruption and the demand disruption. Secondly, two different types of contracts are introduced to coordinate the whole supply chain. One is all-unit wholesale quantity discount policy (AQDP) contract, and the other one is capacitated linear pricing policy (CLPP) contract. And it is found out that the gap between the demand disruption and the product cost disruption is the key factor to influence the supply chain coordination. Some numerical examples and sensitivity analysis are given to illustrate the models. The AQDP contracts are listed out under different cases to show how to use it under double sided disruptions.

FPGA-Based Intelligent Software Hardening Chip for Computer Numerical Control System

2011 ◽  
Vol 105-107 ◽  
pp. 2217-2220
Author(s):  
Mu Lan Wang ◽  
Jian Min Zuo ◽  
Kun Liu ◽  
Xing Hua Zhu
Keyword(s):  
High Speed ◽  
High Performance ◽  
Large Scale ◽  
Position Control ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Cnc Machine Tools ◽  
Cnc Machine ◽  
Cnc System ◽  
Intelligent Software

In order to meet the development demands for high-speed and high-precision of Computer Numerical Control (CNC) machine tools, the equipped CNC systems begin to employ the technical route of software hardening. Making full use of the advanced performance of Large Scale Integrated Circuits (LSIC), this paper puts forward using Field Programmable Gates Array (FPGA) for the functional modules of CNC system, which is called Intelligent Software Hardening Chip (ISHC). The CNC system architecture with high performance is constructed based on the open system thought and ISHCs. The corresponding programs can be designed with Very high speed integrate circuit Hardware Description Language (VHDL) and downloaded into the FPGA. These hardening modules, including the arithmetic module, contour interpolation module, position control module and so on, demonstrate that the proposed schemes are reasonable and feasibility.

Synergistic real-time compensation of tracking and contouring errors for precise parametric curved contour following systems

2017 ◽  
Vol 232 (19) ◽  
pp. 3367-3383 ◽  
Author(s):  
De-Ning Song ◽  
Jian-Wei Ma ◽  
Zhen-Yuan Jia ◽  
Feng-Ze Qin ◽  
Xiao-Xuan Zhao
Keyword(s):  
Real Time ◽  
High Precision ◽  
Tracking Error ◽  
Estimation Algorithm ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
System Structure ◽  
Parametric Curve ◽  
Contouring Error ◽  
Contour Following

The tracking and contouring errors are inevitable in real computer numerical control contour following because of the reasons such as servo delay and dynamics mismatch. In order to improve the motion accuracy, this paper proposes a synergistic real-time compensation method of tracking and contouring errors for precise parametric curve following of the computer numerical control systems. The tracking error for each individual axis is first compensated, by using the feed-drive models with the consideration of model uncertainties, to enhance the tracking performances of all axes. Further, the contouring error is estimated and compensated to improve the contour accuracy directly, where a high-precision contouring-error estimation algorithm, based on spatial circular approximation of the desired contour neighboring the actual motion position, is presented. Considering that the system structure is coupled after compensation, the stability of the coupled system is analyzed for design of the synergistic compensator. Innovative contributions of this study are that not only the contouring-error can be estimated with a high precision in real time, but also the tracking and contouring performances can be simultaneously improved although there exist modeling errors and disturbances. Simulation and experimental tests demonstrate the effectiveness and advantages of the proposed method.

scholarly journals Development of integrated intelligent computer-aided design system for mechanical power-transmitting mechanism design

2017 ◽  
Vol 9 (7) ◽  
pp. 168781401771038 ◽  
Author(s):  
Isad Saric ◽  
Adil Muminovic ◽  
Mirsad Colic ◽  
Senad Rahimic
Keyword(s):  
Rapid Prototyping ◽  
Computer Aided Design ◽  
Three Dimensional ◽  
Computer Numerical Control ◽  
Numerical Control ◽  
Mechanical Power ◽  
Design System ◽  
Computer Aided ◽  
Aided Design ◽  
Intelligent Computer

This article presents architecture of integrated intelligent computer-aided design system for designing mechanical power-transmitting mechanisms (IICADkmps). The system has been developed in C# program environment with the aim of automatising the design process. This article presents a modern, automated approach to design. Developed kmps modules for calculation of geometrical and design characteristics of mechanical power-transmitting mechanisms are described. Three-dimensional geometrical parameter modelling of mechanical power-transmitting mechanisms was performed in the computer-aided design/computer-aided manufacturing/computer-aided engineering system CATIA V5. The connection between kmps calculation modules and CATIA V5 modelling system was established through initial three-dimensional models – templates. The outputs from the developed IICADkmps system generated final three-dimensional virtual models of mechanical power-transmitting mechanisms. Testing of the developed IICADkmps system was performed on friction, belt, cogged (spur and bevel gears) and chain transmitting mechanisms. Also, connection of the developed IICADkmps system with a device for rapid prototyping and computer numerical control machines was made for the purpose of additional testing and verification of practical use. Physical prototypes of designed characteristic elements of mechanical power-transmitting mechanisms were manufactured. The selected test three-dimensional virtual prototypes, obtained as an output from the developed IICADkmps system, were manufactured on the device for rapid prototyping (three-dimensional colour printer Spectrum Z510) and computer numerical control machines. Finally, at the end of the article, conclusions and suggested possible directions of further research, based on theoretical and practical research results, are presented.

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