scholarly journals A Fully Symmetrical High Performance Modular Milling Cutter

Symmetry ◽  
2021 ◽  
Vol 13 (3) ◽  
pp. 496
Author(s):  
Mircea-Viorel Dragoi ◽  
Dorin Mircea Rosca ◽  
Milena Flavia Folea ◽  
Gheorghe Oancea
Keyword(s):  
Computer Aided Design ◽  
High Performance ◽  
Cutting Tool ◽  
Cooling System ◽  
Cutting Tools ◽  
Side Surface ◽  
Milling Cutter ◽  
Symmetric Complex ◽  
Side Face ◽  
Aided Design

Milling cutters belong to a widely used category of cutting tools. In this category, modular milling cutters are a narrow niche, less studied, and developed. Usually, they are symmetrical cutting tools. A milling cutting tool that can be reconfigured due to its modularity and still keeps its symmetry becomes more interesting and useful for machining. The paper presents such a new concept in a computer aided design (CAD) model of a cutting tool based on some novel features. The tool itself is designed as a modular complex. The way the torque is transmitted from the shaft to the elementary cutters is an original one, as they are joined together based on a profiled assembling. The profile is one formed of filleted circular sectors and segments. The reaming of the elementary cutters has two sections each of them assuming a task: transmitting the torque, and precisely centring, respectively. The cooling system, which is a component of the tool, provides the cutting area with coolant both on the front and side face of the cutting tool. Some nozzles placed around the cutting tool send jets or curtains of coolant towards the side surface of the cutter, instead of parallel, as some existing solutions do. The source of the coolant supply is the inner cooling system of the machine tool. This provides the tool with coolant having proper features: high enough flow and pressure. The output of the research is a CAD-based model of the modular milling cutter with a high performance cooling system. All of this model’s elements were designed taking into account the design for manufacturing principles, so it will be possible to easily manufacture this tool. Several variants of milling cutters obtained by reconfiguring the complex tool are presented. Even if the tool is usually a symmetric complex, it can process asymmetric parts. Symmetry is intensively used to add some advantages to the modular cutting tool: balanced forces in the cutting process, the possibility of controlling the direction of the axial cutting force, and a good machinability of the grooves used to assemble the main parts of the cutting tool.

scholarly journals Cutting tool standardization

2021 ◽  
Vol 346 ◽  
pp. 03052
Author(s):  
Maria Ostapenko ◽  
Natalya Voronova
Keyword(s):  
Computer Aided Design ◽  
Cutting Tool ◽  
Cutting Tools ◽  
Technical Committee ◽  
Engineering Industry ◽  
Basic Principles ◽  
Computer Aided ◽  
Design Systems ◽  
Aided Design

The article aims to determine the role of standardization in the engineering industry and for cutting tools in general. This paper explains the basic principles of standardization. The technical committee for standardization of cutting tools (TC 95 ‘Tools’) was presented. The main directions of work and functions of TC 95 ‘Tools’ are explained. Harmonization of standards in Russia is presented on the example of ISO 13399 international standard. The work reveals positive aspects of officially translated versions of standards for enterprises. The article also describes the role of standardized tools when working in computer-aided design systems (CAD).

scholarly journals Computer-aided design and Computer-aided engineering

2018 ◽  
Vol 170 ◽  
pp. 01115 ◽  
Author(s):  
Alexander Kolbasin ◽  
Oksana Husu
Keyword(s):  
Computer Aided Design ◽  
High Performance ◽  
New Technologies ◽  
Production Systems ◽  
Computer Aided Engineering ◽  
Qualified Personnel ◽  
Computer Aided ◽  
Major Factors ◽  
Engineering Modeling ◽  
Aided Design

In modern industrial production some of the major factors of successful development include: cost reduction of the production, im-provement of its quality, as well as help to minimise the time in market en-try. Computer-aided design and Computer-aided engineering (CAD / CAE - systems) are the most effective for implementation of these requirements. Possible use of this engineering modeling simulation in conjunction with the power and speed of high performance computing could reduce costs and time of each cycle of designing, and also significantly reduce devel-opment time. The introduction of new technologies, the use of high quality products and engagement of qualified personnel would allow businesses and organizations to get on a path of innovative development of design and production systems.

Oscillating Finish Grinding of CFRP with Woven Metal Wire Tool Utilizing Plunger Pump Pulsation

2018 ◽  
Vol 12 (6) ◽  
pp. 940-946 ◽  
Author(s):  
Kosaku Nomura ◽  
◽  
Naoya Takeuchi ◽  
Hiroyuki Sasahara
Keyword(s):  
Cutting Tools ◽  
Side Surface ◽  
Metal Wire ◽  
Wire Mesh ◽  
Machined Surface ◽  
Plunger Pump ◽  
Reinforced Plastics ◽  
Tool Axis ◽  
Machined Surface Roughness ◽  
Side Face

Delamination or fiber out often occurs when machining carbon fiber reinforced plastics (CFRPs) with conventional cutting tools. Moreover, the tool life is short. As a new machining strategy for peripheral finishing of CFRP plates, an oscillating finish grinding process with a woven metal wire (WMW) tool utilizing plunger pump pulsation is proposed in this study. A WMW tool is a type of core drill, but the tool body is made of woven metal wire. A wire mesh and grinding fluid supplied from the inner side of the wire netting are expected to prevent the clogging of CFRP chips on the tool surface. However, the surface machined by the side face of the WMW tool becomes wavy as the wavy side surface of the WMW tool is copied to the machined surface when the rotating tool moves vertically to the tool axis. To overcome this limitation, a tool oscillation mechanism utilizing plunger pump pulsation action was newly developed and applied for finish grinding. As a result, it was demonstrated that the machined surface roughness of the CFRPs was improved through axial oscillation of the WMW tool.

Interference-free tool orientation determination by a virtual enveloping element for five-axis machining of a freeform surface

2001 ◽  
Vol 215 (12) ◽  
pp. 1683-1693 ◽  
Author(s):  
R S Lee ◽  
J N Lee
Keyword(s):  
Computer Aided Design ◽  
Cutting Tool ◽  
Contact Length ◽  
Freeform Surface ◽  
Tool Orientation ◽  
Surface Machining ◽  
Cad Cam ◽  
Rear Gouging ◽  
Aided Design ◽  
Five Axis

In machining freeform surfaces on five-axis machine tools, it is very important to determine the location of the cutting tool. The commercial computer aided design/manufacturing (CAD/CAM) software for five-axis machining often lacks flexibility to specify the appropriate tool orientation and toolpath for surface machining. This paper presents a new methodology for determining feasible tool orientation of a toroidal milling cutter with collision and gouging avoidance in five-axis machining of a freeform surface. To avoid collision and rear gouging, a virtual enveloping element is proposed that is derived from the properties of the local and global surfaces. The set of tool orientations can be found first by confining the cutting tool within the virtual enveloping element. Then, the principal induced normal curvatures between the freeform surface and the cutting tool need to be evaluated to offer the criterion of gouging detection. To achieve the best combination of scallop height and machining efficiency, the contact length is also calculated for various tool orientations. The toolpaths generated by the proposed method are verified through solid cutting simulation and a trial cut on a five-axis machine.

High Performance SiGe HBT Performance Variability Learning by Utilizing Neural Networks and Technology Computer Aided Design

2020 ◽  
Vol 98 (5) ◽  
pp. 127-134
Author(s):  
Henry Lee Aldridge ◽  
Jeffrey B Johnson ◽  
Rajendran Krishnasamy ◽  
Vibhor Jain ◽  
Rahul Mishra ◽  
...  
Keyword(s):  
Neural Networks ◽  
Computer Aided Design ◽  
High Performance ◽  
Sige Hbt ◽  
Performance Variability ◽  
Computer Aided ◽  
Aided Design

Optimisation of 4H-SiC Enhancement Mode JFETs for High Performance and Energy Efficient Digital Logic in Extreme Environments

2011 ◽  
Vol 413 ◽  
pp. 391-398 ◽  
Author(s):  
Hassan Habib ◽  
Nicholas Wright ◽  
Alton B. Horsfall
Keyword(s):  
Silicon Carbide ◽  
High Temperature ◽  
Energy Efficient ◽  
Computer Aided Design ◽  
High Performance ◽  
Extreme Environments ◽  
Enhancement Mode ◽  
Power Resources ◽  
Commercial Device ◽  
Aided Design

The commercialisation of Silicon Carbide devices and circuits require high performance, miniaturised devices which are energy efficient and can function on the limited power resources available in harsh environments. The high temperature Technology Computer Aided Design (TCAD) simulation model has been used to design and optimise a potential commercial device to meet the current challenges faced by Silicon Carbide technology. In this paper we report a new methodology to optimise the design of high temperature four terminal enhancement mode n-and p-JFETs for Complementary JFET (CJFET) logic.

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