4-Axis CNC Milling Machine for Production of Dental Prosthesis

2020 ◽  
Author(s):  
Nei Da Silva Paz Neto ◽  
Marcus V. Americano da Costa
Keyword(s):  
Added Value ◽  
Milling Machine ◽  
Cnc Milling ◽  
Dental Restorations ◽  
Dental Clinics ◽  
Cnc Milling Machine ◽  
Cad Cam ◽  
And Training ◽  
Cam Systems ◽  
Dental Professionals

This paper presents the development of a 4-axis CNC milling machine for making dental restorations. The machine was developed to help spread knowledge about CAD/CAM to future professionals in healthcare area, including automation engineering. The CAD/CAM systems can be found in dental clinics and specialized laboratories with a high added value, as it brings reliability, precision, and speed to the prosthesis developed and, thereby, increasing the qualityof the nal product. With this high cost, not all dental professionals can have this type of technology. However, it is demonstrated the possibility of building these systems at a reduced cost and applying them to restorative dentistry. Therefore, this work results in instigating of the engineering education and training future professionals in mechatronics research with applications to the Odontology.

Utilization of CAD/CAM System Edgecam in Programming of CNC Milling Machine

2015 ◽  
Vol 808 ◽  
pp. 280-285
Author(s):  
Nadežda Čuboňová
Keyword(s):  
Complex Shape ◽  
Machining Process ◽  
Milling Machine ◽  
Cnc Milling ◽  
Tool Paths ◽  
Cnc Milling Machine ◽  
Cad Cam ◽  
Technological Documentation ◽  
Design Proposal ◽  
Cam Systems

Today's modern production already not does without sophisticated CAD/CAM system. The present CAD/CAM systems integrate part modelling and engineering design, proposal of technological documentation in the form of NC programs and operational management of production within a one computer system. Their utilization allows the programmer to create machining technology, to define the tool paths and to generate NC programs for very complex shape parts. The article focuses on the use of CAD/CAM system Edgecam, in the formation of the machining process for a milling Machine Emco Concept Mill (CM) 105. It describes the creation of postprocessor for Sinumerik 840D control system and its application and verifying in the production of specific components.

Digital Manufacturing of Implant Based Dental Restorations

2008 ◽  
Author(s):  
Ming C. Leu ◽  
Parthiban Delli
Keyword(s):  
Investment Casting ◽  
Dimensional Accuracy ◽  
Digital Manufacturing ◽  
Cnc Milling ◽  
Dental Restorations ◽  
Human Labor ◽  
Cad Cam ◽  
Cad Models ◽  
Direct Digital Manufacturing ◽  
Cam Systems

Traditional methods of producing dental bars for overdentures involve tedious and time-consuming operations that demand substantial human labor and demanding skills. Though there exist several CAD/CAM systems that have been developed for various dental restorations like bridges, crowns, etc., there exists no commercial CAD/CAM system at present for design and fabrication of dental restorations for missing multiple teeth. In the research described in the present paper, CAD models of dental bars for implant-retained dental restorations were used as input for three types of fabrication processes: rapid prototyping followed by investment casting, CNC milling, and direct digital manufacturing. Details of material and process combinations and results of comparing these three types of processes, including an analysis on dimensional accuracy, are discussed.

scholarly journals Image Processing of Surface in Cad/Cam Applications

2018 ◽  
Vol 26 (5) ◽  
pp. 36-47
Author(s):  
Ahmed A. Ebraheem
Keyword(s):  
Image Processing ◽  
Milling Machine ◽  
Cnc Milling ◽  
Original Surface ◽  
Cnc Milling Machine ◽  
3D Surface ◽  
Cad Cam ◽  
Median Operator ◽  
Surface Images

Because of difficulty of Reconstructing 3D surface from the 2D captured images in terms of getting a higher resolution compared with the original surface so it has been adopted treatment of surface images after reconstructing the surface by of assembling all 2D im- ages and apply various filters to get the surface closest to the original surface of the sample under test. Various ways have been applied such as Laplacian and Median. It has been found that Median operator gave the best treatment to the surface where it was adopted to find the toolpath through the surface points for the purpose of machining using a CNC milling machine.  

A Study on CAD/CAM Application in CNC Milling Using Industrial Clay

2015 ◽  
Vol 761 ◽  
pp. 32-36
Author(s):  
Nurul Wahieda Muhamad Bustaman ◽  
Mohd Salman Abu Mansor
Keyword(s):  
Low Cost ◽  
Machining Parameters ◽  
Milling Machine ◽  
Design Phase ◽  
Cnc Milling ◽  
Clay Sample ◽  
Machining Time ◽  
Cnc Milling Machine ◽  
Cad Cam ◽  
The Difference

Throughout the production process, improper planning and exploitation of the CAD/CAM system leads to the low level utilization of the CNC milling machine. In product design, tangible prototype is fabricated using CAD/CAM techniques in the design phase to analyse and modify the product before actual production. In this research, industrial clay is used as the prototype material. The objectives of the study are to investigate the machining parameters of industrial clay using the CNC milling machine and to apply the CAD/CAM system in producing a clay sample part via the CNC milling machine. Using uncomplicated and low cost setup for the fabrication method, an industrial clay sample part is prepared in the CAD/CAM system and shaped using the CNC milling machine. The difference between the simulated and the actual machining time of the machined part is analysed.

scholarly journals STEP-NC Compliant Intelligent CNC Milling Machine with an Open Architecture Controller

2021 ◽  
Vol 11 (13) ◽  
pp. 6223
Author(s):  
Mahanama Dharmawardhana ◽  
Asanga Ratnaweera ◽  
Gheorghe Oancea
Keyword(s):  
Condition Monitoring ◽  
Numerical Control ◽  
Open Architecture ◽  
Shop Floor ◽  
Raspberry Pi ◽  
Cutting Condition ◽  
Milling Machine ◽  
Cnc Milling ◽  
Cnc Milling Machine ◽  
Cad Cam

A STEP-NC or ISO 14649 compliant machine controller is developed, using Open Architecture Control technology for a three-axis Computer Numerical Control milling machine in this research. The controller is developed on a Raspberry Pi single-board computer, using C++ language. This new development is proposed as a low-cost alternative to ISO6983 standard, ensuring continuous integration in the CAD/CAM/CNC chain in machining; thus, it broadens the spectrum of problems handled by conventional CNC systems. The new machine controller is intelligent enough to extract geometrical and manufacturing parameters, cutting tool data, and material data from the STEP-NC file. Accordingly, tool paths for machining can be generated in the controller itself. The shop floor level modification of parameters and the possibility of regeneration of new toolpaths is an added advantage of this new controller. The modified or improved version of the STEP-NC file can be sent back to the CAD/CAM system to close the CAD/CAM/CNC chain. Machine condition monitoring can be achieved by connecting sensors through an available slave I/O board. In the present development, the current drawn by each servo motor is fed back to the controller for cutting condition monitoring. A laboratory scale three-axis CNC milling machine is developed to test the performance of the newly developed controller. The accuracy of positioning, perpendicularity of axes and linearity of this machine are experimentally verified through standard tests. The STEP-NC compliance of the controller is tested and verified, using a STEP-NC program derived based on a sample program given in ISO 14649 standard.

scholarly journals A CALCULATION OF POWER FOR FORMING METAL SHEET BY SPIF PROCESS

2009 ◽  
Vol 12 (4) ◽  
pp. 5-17
Author(s):  
Nam Thanh Nguyen ◽  
Dien Khanh Le ◽  
Sy Van Le
Keyword(s):  
Crystal Plasticity ◽  
Manufacturing Process ◽  
Incremental Forming ◽  
Single Point ◽  
Metal Sheet ◽  
Single Point Incremental Forming ◽  
Milling Machine ◽  
Cnc Milling ◽  
Cnc Milling Machine ◽  
Cad Cam

This paper attempts to represent a case of calculating of the energy power that is consumed by CNC milling machine when manufacturing via forming membrane metal sheet by SPIF (Single Point Incremental Forming), the recent manufacturing process of metal sheet forming by drafting a no cutting-edge spheric tip tool on a clamped metal sheet. The calculation is based on the disclocation, the crystal plasticity and the slip of lattices inside the structure of the deformed metal. In the while time there is a series of empirical species of 24 groups batch of workpieces that were also machined by CNC milling machine Bridge Port VMC500, CAD/CAM Lab., FME of HCMUT for checking this calculation on consumed power.

CAD/CAM for Five-Axis Printing Machine

2011 ◽  
Vol 486 ◽  
pp. 201-204
Author(s):  
Dein Shaw ◽  
Chun Wei Lai
Keyword(s):  
Three Dimensional ◽  
Milling Machine ◽  
Cnc Milling ◽  
Dimensional Model ◽  
Three Dimensional Model ◽  
Print Head ◽  
Cnc Milling Machine ◽  
Printing Quality ◽  
Cad Cam ◽  
Printing Machine

In this study, CAD/CAM system for a 5-axis printing machine was developed. The configuration of 5-axis printing machine is based on the 5-axis CNC milling machine; the spindle of the 5-axis CNC milling machine was replaced by a commercial printer. CAD software was first used to develop a three dimensional model, after that a color figure which will be printed on a freeform surface was applied on the surface of that three dimensional model. Then the printing paths of the 5-axis printing machine were generated by using mapping transformation. Furthermore, the distance between the print head and the curved printing surface is an important factor which affects the printing quality. It is also noted that any two points on the surface of the print head have different distances with the curved surface, it is necessary to keep these distances in a certain range of acceptable printing quality. Therefore, the range of good printing quality distance was measured. The height and width of the region which the print head print at one printing step were limited by the good printing quality distance. If the curvature of surface is too large (the distance between print head and curved surface is depend on the curvature of the surface), only the region which had good printing quality was printed. The unprinted area was printed after the print head rotated and translated to a proper position.

ANALYSIS OF THE PRICE OF THE MANUFACTURE OF BATCH PARTS FOR CNC MILLING AUXILIATED BY CAD / CAM SYSTEMS

2018 ◽  
Author(s):  
ERIC RAMALHO FERREIRA DE CARVALHO ◽  
MARCOS VINICYUS OLIVEIRA ◽  
erijanio Silva ◽  
Gutembergy Diniz ◽  
João Dehon Rocha Junior ◽  
...  
Keyword(s):  
Cnc Milling ◽  
Cad Cam ◽  
Cam Systems

Application of Taguchi and Response Surface Methodologies for Surface Roughness in Rotary Tool Polishing Hardness Mould Steels

2011 ◽  
Vol 87 ◽  
pp. 82-89
Author(s):  
Potejanasak Potejana ◽  
Chakthong Thongchattu
Keyword(s):  
Surface Roughness ◽  
Response Surface ◽  
Laser Scanning ◽  
Cutting Speed ◽  
Optimal Level ◽  
Confocal Laser ◽  
Milling Machine ◽  
Cnc Milling ◽  
Polishing Process ◽  
Cnc Milling Machine

This research proposes a new application of 3-axis CNC milling machine for polishing the 60 HRC hardness steels. The rotary polishing tools are designed by refer to the end-mill ball nose’s design. The diamond powder are coated in rotary polishing tools by resinoid bonding method and concentrated in 4.4 karat/cm2. The Zig-milling tool paths are used to polish the hardness steel. After polishing, the confocal laser scanning microscope is used to analyze the arithmetic mean surface roughness of the hardness steels. The L12 orthogonal array of the Taguchi’s method is selected to conduct the matrix experiment to determine the optimal polishing process parameters. The diamond grit size and cutting speed of the rotary polishing tools, feed rate and step over of the tool path, the depth of polishing process penetration, and polishing time are used to study. The combination of the optimal level for each factor of the hardness steel polishing process are used to study again in the confirmation experiment. The predicted signal to noise ratio of smaller - the better under optimal condition are calculated by using the data from the experiment. The combination of the optimal level for each factor are used to study again in the confirmation experiment and the result show that polishing time was a dominant parameter for the surface roughness and the next was depth of penetration. The response surface design is then used to build the relationship between the input parameters and output responses. The experimental results show that the integrated approach does indeed find the optimal parameters that result in very good output responses in the rotary polishing tools polished hardness mould steel using CNC milling machine. The mean surface roughness of hardness steel polishing process is improved by the diamond rotary tools with the 3-axis CNC milling machine.

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