Development of Tool Fabrication CAD/CAM for Conicoid End Mill

2007 ◽  
Vol 1 (2) ◽  
pp. 128-135 ◽  
Author(s):  
Koichi Morishige ◽  
◽  
Shingo Ishizuka ◽  
Yoshimi Takeuchi ◽  
◽  
...  
Keyword(s):  
Cutting Edge ◽  
Machining Accuracy ◽  
Data Generation ◽  
3D Cad ◽  
Shape Precision ◽  
Cad Cam ◽  
End Mills ◽  
Tool Fabrication ◽  
Nc Data ◽  
Grinding Machine

This study deals with new practical fabrication of end mills based on 3D-CAD/CAM. End mills with arbitrary shapes generally difficult to produce are useful in upgrading machining accuracy and efficiency. Our tool fabrication CAD/CAM potentially produces end mills with arbitrarily shaped cutting edge. In order to make them practical, we developed a way to design the cutting edge shape and NC data generation for a 5-axis controlled tool grinding machine. The resulting system enables produces practical, arbitrarily shaped end mills with shape precision comparable to their commercially available counterparts.

Creation of Ball End Mills for High Speed Milling by means of 3D-CAD/CAM System

2002 ◽  
Vol 2002.4 (0) ◽  
pp. 107-108
Author(s):  
Yi Lu ◽  
Yoshimi Takeuchi ◽  
Ichiro Takahashi ◽  
Masahiro Anzai
Keyword(s):  
High Speed ◽  
High Speed Milling ◽  
3D Cad ◽  
Cad Cam ◽  
End Mills

A New Method for the Preparation of Cutting Edges via Grinding

2013 ◽  
Vol 769 ◽  
pp. 85-92 ◽  
Author(s):  
Christian Effgen ◽  
Bejamin Kirsch
Keyword(s):  
Tool Path ◽  
Cutting Edge ◽  
New Method ◽  
Grinding Wheel ◽  
Outer Diameter ◽  
Processing Times ◽  
Elastic Bond ◽  
End Mills ◽  
Grinding Machine ◽  
Milling Tools

In this paper, a new method for the preparation of cutting edges via grinding is presented. This method enables the manufacturing of the tool macro and micro geometry in one setup without reclamping, allowing improved flexibility, repeatability and accuracy at reduced processing times. This new method is path controlled using a special elastic bond for the grinding wheels. By using elastic bond, a rounded cutting edge instead of undesired chamfers can be achieved, as the bond nestles around the cutting edge and elastically deforms. The elastic bond is specified by the grain concentration and its basic hardness. Besides the specifications of the bond, the process kinematics highly influences the properties of the cutting edge. The kinematics is a combination of the tool path (machining strategy) and the grinding wheel geometry. The presented experiments include the examination of three different kinematics using three different grinding wheel geometries, FEPA 1A1, 1V1 and 4A2. For each kinematics, three different grain concentrations and three degrees of basic bond hardness were tested, resulting in a complete amount of 27 parameter combinations. The outer diameter cutting edges of cemented carbide milling tools (end mills) were prepared in a 5-axis tool grinding machine. The shape and quality of the achieved cutting edge rounding was qualitatively evaluated by means of scanning electron microscopy (SEM).

scholarly journals Influence of End Mill Manufacturing on Cutting Edge Quality and Wear Behavior

2021 ◽  
Vol 5 (3) ◽  
pp. 77
Author(s):  
Berend Denkena ◽  
Alexander Krödel-Worbes ◽  
Sascha Beblein ◽  
Markus Hein
Keyword(s):  
Wear Behavior ◽  
Cutting Edge ◽  
End Mills ◽  
Edge Quality ◽  
Manufacturing Process Chain ◽  
The Individual ◽  
Application Specific ◽  
Milling Tools ◽  
Edge Preparation

One of the decisive factors for the performance of milling tools is the quality of the cutting edge. The latter results from the process control of the individual steps along the tool manufacturing process chain, which generally includes the sintering or pressing of the blanks, grinding, cutting edge preparation, and coating of the tools. However, the targeted and application-specific design of the process steps in terms of high economic efficiency is currently limited by a lack of knowledge regarding the influence of the corresponding process parameters on the resulting cutting edge quality. In addition, there is a lack of suitable parameters that adequately represent the characteristics of the cutting edge microtopography. This publication therefore investigates the influence of manufacturing processes on cutting edge quality and wear behavior of end mills. On this basis, different characterization parameters for the cutting edge quality are derived and evaluated with regard to their ability to predict the wear behavior.

Optimization of Trapezoidal Runner in Plastic Molding Based on MATLAB

2014 ◽  
Vol 552 ◽  
pp. 66-69
Author(s):  
Gui Jie Fan
Keyword(s):  
Obtuse Angle ◽  
Minimum Length ◽  
Special Effects ◽  
Plastic Molding ◽  
Injection Speed ◽  
3D Cad ◽  
Section Area ◽  
Cad Cam ◽  
Mould Design ◽  
Runner Design

The runner design is an important parts in plastic molding design. Its shape and dimensions have special effects on the molten plastic’s pressure, hot loss, injection speed, etc. At present, trapezoidal runner is used widely for better fluidity and lower assembly precision relatively compared with the circular runner. This paper uses the Fminsearch function of MATLAB and constructs an objective function based on the minimum length of the perimeter of the trapezoidal runner to optimize the trapezoidal runner section. The conclusion of this paper is that the perimeter of the trapezoidal runner is the shortest one when a equals c (shown as Fig.1), as well as the obtuse angle between a and c equals 120o. At this conditions, the volume of the molten plastic that flows through the runner section is maximum when the trapezoidal runner section area is given. The optimization results in the plastic mould design can used as the size or the constraints to drive the runner section in 3D CAD/CAM software, which can help the designer to get the trapezoidal runner section easily and quickly.

scholarly journals Cutting Performance of Different Coated Micro End Mills in Machining of Ti-6Al-4V

Micromachines ◽  
2018 ◽  
Vol 9 (11) ◽  
pp. 568 ◽  
Author(s):  
Zhiqiang Liang ◽  
Peng Gao ◽  
Xibin Wang ◽  
Shidi Li ◽  
Tianfeng Zhou ◽  
...  
Keyword(s):  
Tool Wear ◽  
Cutting Edge ◽  
Micro Milling ◽  
End Mill ◽  
Coating Materials ◽  
Edge Chipping ◽  
Workpiece Surface ◽  
Micro End Mill ◽  
End Mills ◽  
Flank Surface

Tool wear is a significant issue for the application of micro end mills. This can be significantly improved by coating materials on tool surfaces. This paper investigates the effects of different coating materials on tool wear in the micro milling of Ti-6Al-4V. A series of cutting experiments were conducted. The tool wear and workpiece surface morphology were investigated by analyzing the wear of the end flank surface and the total cutting edge. It was found that, without coating, serious tool wear and breakage occurred easily during milling. However, AlTiN-based and AlCrN-based coatings could highly reduce cutting edge chipping and flank wear. Specifically, The AlCrN-based coated mill presented less fracture resistance. For TiN coated micro end mill, only slight cutting edge chipping occurred. Compared with other types of tools, the AlTiN-based coated micro end mill could maximize tool life, bringing about an integrated cutting edges with the smallest surface roughness. In short, the AlTiN-based coating material is recommended for the micro end mill in the machining of Ti-6Al-4V.

scholarly journals Analytical Assessment of Fatigue Strength of a Dental Crown

2020 ◽  
Vol 8 (6) ◽  
pp. 2689-2693
Keyword(s):  
Failure Analysis ◽  
Degrees Of Freedom ◽  
Field Variable ◽  
Static Fatigue ◽  
Medical Field ◽  
Element Analysis ◽  
3D Cad ◽  
Design For All ◽  
Cad Cam ◽  
Analytical Assessment

With the accomplishment of new engineering science and technologies, machineries formulated by the the technocrats are utilized in medical field. Biomedical Engineering has thus gained a prominent status in the recent years. Few decades ago, it was considered as weird thing if any mechanical engineers performed studies on dental area, but in today’s scenario mechanical engineers are doing studies as well as research in the area of dental science. In this paper an attempt has been made to select best crown material for molar tooth, So that an appropriate material can be placed in the human body which is most difficult task .so for designing a molar crown, modeling is done in pro/engineer software, it is one of the parametric 3D CAD/CAM/CAE solution widely used by mechanical engineers for designing any product .this software creates a complete 3D Digital model of the product. For this extensive research, design for all crowns will be the same but only material properties will be different. After design, failure analysis is done. Loss of ability to function normally is the study of failure analysis. This is accomplished by considering various loading conditions .Here finite element analysis is used, the standard principle underlying the FEM are simple. The word finite is used to describe the limited, or finite, number of degrees of freedom used to model the behavior of each element, the element are assumed to be connected to one another but only at interconnected joints, known as nodes. Considering a body through which the distribution of a field variable I.e. displacement or stress is required, this body could be subjected to various loads. Problem is solved by two methods: static fatigue and dynamic fatigue

New method for detecting active infeed of cutting edge of end mills

2021 ◽  
Author(s):  
Petr M. Pivkin ◽  
Vladimir A. Grechishnikov ◽  
Ilya V. Minin ◽  
Mikhail Mosyanov ◽  
Alexsey B. Nadykto
Keyword(s):  
Cutting Edge ◽  
New Method ◽  
End Mills

Direct Building Manufacturing of Homes with Digital Fabrication

2012 ◽  
pp. 71-82 ◽  
Author(s):  
Lawrence Sass
Keyword(s):  
Digital Fabrication ◽  
Information Modeling ◽  
3D Cad ◽  
The Core ◽  
Construction Techniques ◽  
Building Information ◽  
Cad Cam ◽  
Cad Models ◽  
Paper Documentation ◽  
Small Building

Architecture, engineering, and construction industries maintain a long standing desire to enhance design communication through various forms of 3D CAD modeling. In spite the introduction of Building Information Modeling (BIM), designers and builders expect varying amounts of communication loss once construction has started due to indirect construction techniques or hand based methods to manufacture buildings. This is especially true for houses and small structures, buildings that makeup the core of villages and suburbs. Unfortunately, paper documentation and reading 3D CAD models on screen continue the trend of indirect production defined in most manufacturing industries as error. The emerging application of CAD/CAM within design and construction industries provides hope for elevated communication between design and building. With CAD/CAM, it is possible to manufacture buildings of all types and sizes directly from CAD files similar to mass produced artifacts, thus reducing complexity in communication between parties. This chapter is presentation of one process of direct manufacturing from CAD and the emerging possibilities for small building production using digital fabrication. The chapter will focus on houses to illustrate the potential of direct manufacturing of buildings from CAD data.

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