CNC Milling Tool of Choice to Explore

2013 ◽  
Vol 706-708 ◽  
pp. 1246-1249
Author(s):  
Da Lin Zhang ◽  
Ji Lin Guo ◽  
Tian Rui Zhou
Keyword(s):  
Type Structure ◽  
Cnc Machining ◽  
Machining Efficiency ◽  
Processing Quality ◽  
Cnc Milling ◽  
Tool Selection ◽  
Milling Cutter ◽  
Milling Tool

The CNC tool selection is an important factor affecting the CNC machining efficiency and parts processing quality. In this paper, based on the analysis of the CNC milling cutter type, structure, diameter, angle, economy and other factors, a reasonable strategy to select the tool.

Design of the CNC Milling Tool Selection System

2011 ◽  
Vol 148-149 ◽  
pp. 153-157
Author(s):  
Xiu Lin Sui ◽  
Na Hu ◽  
Chun Hong Zhang
Keyword(s):  
Selection Process ◽  
Complex Surface ◽  
Forward Direction ◽  
Computer Applications ◽  
Cnc Milling ◽  
Tool Selection ◽  
Milling Tool ◽  
Selection For ◽  
Inference Strategy ◽  
Reasoning Mechanism

Knowledge base of milling feature machining based on relational database is proposed, using knowledge representation of production rules, according to the characteristics of feature machining knowledge. Tool selected reasoning mechanism and reasoning processes is presented basing the installed CNC milling tool database , and further reasoning is based on knowledge, milling tool selection method is implemented based on feature machining knowledge using the forward direction inference strategy .In the paper, a complete system of the selecting milling cutter is established. The system connects not only the theoretical knowledge but the expert’s experiences with the computer applications in order to provide a base of realizing the automatic mechanical processing. By the example of machining tool selection for complex surface, the selection process is described, and the system can select the tools to meet the processing requirements within a shot time, and has good versatility.

Applications of Software Engineering to Manufacturing Process Planning

2008 ◽  
Vol 8 (3) ◽  
Author(s):  
V. Sundararajan ◽  
Paul K. Wright
Keyword(s):  
Software Development ◽  
Process Planning ◽  
Tool Path ◽  
Numerical Control ◽  
Planning System ◽  
Cnc Milling ◽  
Design Development ◽  
Tool Selection ◽  
Process Planning System ◽  
New Algorithms

Agile methods of software development promote the use of flexible architectures that can be rapidly refactored and rebuilt as necessary for the project. In the mechanical engineering domain, software tends to be very complex and requires the integration of several modules that result from the efforts of large numbers of programmers over several years. Such software needs to be extensible, modular, and adaptable so that a variety of algorithms can be quickly tested and deployed. This paper presents an application of the unified process (UP) to the development of a research process planning system called CyberCut. UP is used to (1) analyze and critique early versions of CyberCut and (2) to guide current and future developments of the CyberCut system. CyberCut is an integrated process planning system that converts user designs to instructions for a computer numerical control (CNC) milling machine. The conversion process involves algorithms to perform tasks such as feature extraction, fixture planning, tool selection, and tool-path planning. The UP-driven approach to the development of CyberCut involves two phases. The inception phase outlines a clear but incomplete description of the user needs. The elaboration phase involves iterative design, development, and testing using short cycles. The software makes substantial use of design patterns to promote clean and well-defined separation between and within components to enable independent development and testing. The overall development of the software tool took about two months with five programmers. It was later possible to easily integrate or substitute new algorithms into the system so that programming resources were more productively used to develop new algorithms. The experience with UP shows that methodologies such as UP are important for engineering software development where research goals, technology, algorithms, and implementations show dramatic and frequent changes.

One Touch Workpiece Verification System for CNC Machining Using a Low-Cost Computer Vision Approach

2016 ◽  
Author(s):  
Maxwell K. Micali ◽  
Hayley M. Cashdollar ◽  
Zachary T. Gima ◽  
Mitchell T. Westwood
Keyword(s):  
Computer Vision ◽  
Low Cost ◽  
Cnc Machining ◽  
Potential Operator ◽  
Cnc Milling ◽  
Machining Processes ◽  
Loop Control ◽  
Operator Error ◽  
Verification System ◽  
Milling Machines

While CNC programmers have powerful tools to develop optimized toolpaths and machining plans, these efforts can be wholly undermined by something as simple as human operator error during fixturing. This project addresses that potential operator error with a computer vision approach to provide coarse, closed-loop control between fixturing and machining processes. Prior to starting the machining cycle, a sensor suite detects the geometry that is currently fixtured using computer vision algorithms and compare this geometry to a CAD reference. If the detected and reference geometries are not similar, the machining cycle will not start, and an alarm will be raised. The outcome of this project is the proof of concept of a low-cost, machine/controller agnostic solution that is applied to CNC milling machines. The Workpiece Verification System (WVS) prototype implemented in this work cost a total of $100 to build, and all of the processing is performed on the self-contained platform. This solution has additional applications beyond milling that the authors are exploring.

Automatic tool selection for milling operations Part 1: Cutting data generation

2000 ◽  
Vol 214 (4) ◽  
pp. 271-282 ◽  
Author(s):  
I D Carpenter ◽  
P G Maropoulos
Keyword(s):  
Tool Life ◽  
Chip Thickness ◽  
Minimum Cost ◽  
Optimization Criterion ◽  
Cnc Machining ◽  
Data Generation ◽  
Tool Selection ◽  
Workpiece Material ◽  
Milling Operations ◽  
Wide Range

The selection of tools and cutting data is a central activity in process planning and is often liable to an element of subjectivity. It is further complicated by the wide range of choice presented by the various operation types and the huge portfolio of cutters and inserts available from many different tool manufacturers. This paper describes a procedure to select consistently and efficiently tools for rough and finish milling operations performed on a computer numerical controlled (CNC) machining centre. A wide range of milling operations is considered, including faces, square shoulders, slots, T-slots, pockets, holes and profiles. An initial set of feasible tools is generated that satisfy the constraints of the tool type, the operation geometry, the insert geometry and carbide grade, the workpiece material and the machine tool capacity. Each tool consists of a holder and one or more indexable carbide inserts. Aggressive cutting data are generated for each feasible tool using a rapid search procedure in the permissible depth/width/feed space for good chip control. The cutting data are further refined by a set of technological constraints, which include tool life, surface finish, machine power and available spindle speeds and feeds. The overall cutting data optimization criterion is selected by the user from minimum cost, maximum production rate or predefined tool life. A new optimization criterion, called ‘harshness’, allows the user to influence the chip thickness that is achieved for any given cutter. Any feasible tools that fail to satisfy all the constraints and optimization criteria are discarded.

Study on the Optimized Cutting Parameters for the Nuclear Channel Head

2011 ◽  
Vol 121-126 ◽  
pp. 3534-3540
Author(s):  
Zhong Hai Yu ◽  
Tian Chen ◽  
Di Shi Liu ◽  
Jing Wang
Keyword(s):  
Mathematical Model ◽  
Nuclear Power ◽  
Large Scale ◽  
Production Efficiency ◽  
Biological Evolution ◽  
Cutting Parameters ◽  
Optimal Combination ◽  
Cnc Machining ◽  
Machining Efficiency ◽  
Complicated Shape

As one of the key components of the nuclear power equipments, the nuclear channel head has a complicated shape and is difficult to be machined. In this paper, the optimal combination of cutting parameters of large-scale nuclear channel head is researched. Considering the machining requirements and machining conditions, the cutting parameters optimized mathematical model is established to achieve the goal of maximum production efficiency. Meanwhile, the target functions and the corresponding constraint functions are analyzed. Finally, by using genetic algorithm of simulating biological evolution, the mathematic models of cutting parameters of CNC machining are compared and optimized. Then the optimized results are compared with the cutting parameters obtained through the trial-producing experience and manual of a small-size channel head. We conclude that the optimized cutting parameters can greatly increase the CNC machining efficiency of Nuclear Channel Head.

A Comparison of the Simulated Dynamics of Various Models Used to Predict Undeformed Chip Thickness in High-Speed Low-Radial-Immersion Milling Processes

2013 ◽  
Author(s):  
Josiah A. Bryan ◽  
Roger C. Fales
Keyword(s):  
High Speed ◽  
Chip Thickness ◽  
Milling Process ◽  
Precision Machining ◽  
Traditional Model ◽  
Cnc Milling ◽  
Undeformed Chip Thickness ◽  
Milling Tool ◽  
Tool Damage ◽  
Low Radial Immersion

Various models have been proposed to estimate the undeformed thickness of chips produced by a CNC milling tool, in order to calculate the forces acting on the tool. The choice of model significantly affects the simulated dynamics of the tool, thereby affecting the dynamic stability of the simulated process and whether or not chatter occurs in a given cutting scenario. Simulations of the dynamics of the milling process can be used to determine the conditions at which chatter occurs, which can lead to poor surface finish and tool damage. The dynamics of a traditional model and a more detailed numerical model are simulated here with particular emphasis on the differences in their chatter bifurcation points. High-speed, low-radial-immersion milling processes are simulated because of their application in industrial high-precision machining.

Fast Surface Construction and NC Milling Based on 3D Scanning

2013 ◽  
Vol 579-580 ◽  
pp. 598-602
Author(s):  
Zheng Hong Wu ◽  
Qing Kun Zhou ◽  
Da Peng Fan ◽  
Jian Neng Zhu ◽  
Jian Min Wang
Keyword(s):  
Point Cloud ◽  
3D Scanning ◽  
Cnc Machining ◽  
Machining Process ◽  
Cnc Milling ◽  
Cloud Processing ◽  
Whole Process ◽  
Nc Milling ◽  
Data Acquisition And Processing ◽  
Surface Construction

Construction of a rapid surface and processing is an effective way to improve the manufacturing efficiency, this paper linked the 3D scanning, fast surface construction and NC closely, described the whole process of surface data acquisition and processing, surface construction and the process of NC machining. The outer surface of the mouse was scanned from multiple angles by using 3D CaMega scanner, a plurality of point cloud was obtained, the point cloud processing, triangle face processing construct refinement of the model surface and grid lines were all processed in Geomagic Studio software, through adjustments, NURBS surface was generated. Also the mould surface of the mouse was constructed in the UG NX software. This paper wrote the machining process, Programmed NC Milling in UG NX software, generated the trajectory of rough and finishes machining as well as the programs of machining tool. Also CNC milling was processed CNC machining center.

New CNC Machining Method for Sculptured Surface Using Non-Ball-End Tools

2012 ◽  
Vol 628 ◽  
pp. 469-475
Author(s):  
Kai Hong Zhou ◽  
Dian Ting Liu
Keyword(s):  
Differential Geometry ◽  
Approximation Theory ◽  
Cnc Machining ◽  
Moving Frame ◽  
Sculptured Surface ◽  
Machining Efficiency ◽  
Manufacture Technology ◽  
Machining Quality ◽  
Tool Surface ◽  
Optimized Model

In current multi-axis CNC manufacture technology, the sculptured surface has to be approximated to simplify its complexity, therefore, the current machining methods can not fully exploit the flexibility of the multi-axis CNC tools and offer the prospect of higher machining efficiency and better machining quality. A new theory (Envelope-Approximation Theory) was presented to generate the sculptured surface by maximizing the machined strip width based on the moving frame. The differential geometry based on the idea of the moving frame was discussed to determine the related motion of the tool and the workpiece. The optimized model of the related motion of the tool was established to enable the envelope of the tool surface approximate to the predesigned surface aiming at the least warping. Simulated examples based on Matlab7.0 demonstrate the improved machining efficiency and precision of the Envelope-Approximation Theory over current published methods.

scholarly journals 5-Axis Double-Flank CNC Machining of Spiral Bevel Gears via Custom-Shaped Milling Tools – Part II: Physical Validations and Experiments

2021 ◽  
Author(s):  
Gaizka Gómez Escudero ◽  
Pengbo Bo ◽  
Haizea González Barrio ◽  
Amaia Calleja Ochoa ◽  
Michael Barton ◽  
...  
Keyword(s):  
End Milling ◽  
Bevel Gear ◽  
Cnc Machining ◽  
Flank Milling ◽  
Spiral Bevel Gear ◽  
Machining Accuracy ◽  
Machining Time ◽  
Milling Tool ◽  
Gear Manufacturing ◽  
Spiral Bevel

Abstract We investigate a recently introduced methodology for 5-axis flank computer numerically controlled (CNC) machining, called double-flank milling. Certain geometries, such as curved teeth of spiral bevel gear, admit this approach where the milling tool has tangential contact with the material block on two sides, yielding a more efficient variant of flank milling. To achieve high machining accuracy, the path-planning algorithm, however, does not look only for the path of the tool, but also for the shape of the tool itself. We validate the approach by series of physical experiments using an abrasive custom-shaped milling tool specifically designed for a particular type of a spiral bevel gear. We show the potential of this new methodology in the semifinishing stage of gear manufacturing, where it outperforms traditional ball end milling by an order of magnitude in terms of machining time, while keeping, or even improving, the machining error.

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