In-Process Micro/Nano Measurement for Micro Cutting

Micro-Cutting ◽  
2013 ◽  
pp. 315-344 ◽  
Author(s):  
Wei Gao ◽  
Kang-Won Lee ◽  
Young-Jin Noh ◽  
Yoshikazu Arai ◽  
Yuki Shimizu
Keyword(s):  
Micro Cutting

Reserch of Dislocation Theory in Micro Cutting

2012 ◽  
Vol 482-484 ◽  
pp. 2033-2036
Author(s):  
Hong Jun Ding ◽  
Xi Bin Wang ◽  
Zhi Qiang Liang ◽  
Qiang Jia
Keyword(s):  
Fracture Strength ◽  
Paper Analysis ◽  
Fracture Dislocation ◽  
Dislocation Theory ◽  
Line Defect ◽  
Dislocation Mechanism ◽  
Micro Cutting ◽  
Metal Fracture ◽  
Depth Analysis

This paper analysis Griffith 's Theory and the metal theoretical fracture strength, thus introducing a line defect that existence in actual crystal — dislocation; And in-depth analysis the metal fracture dislocation mechanism in the micro cutting, and the formation and expand of the Fracture cracks , provides the theory basis for micro cutting

Ultrafast laser micro-cutting of stainless steel and PZT using a modulated line of multiple foci formed by spatial beam shaping

2015 ◽  
Vol 67 ◽  
pp. 212-217 ◽  
Author(s):  
Cyril Mauclair ◽  
David Pietroy ◽  
Yoan Di Maïo ◽  
Emmanuel Baubeau ◽  
Jean-Philippe Colombier ◽  
...  
Keyword(s):  
Stainless Steel ◽  
Beam Shaping ◽  
Ultrafast Laser ◽  
Micro Cutting ◽  
Spatial Beam

Prototype Design of a High-Speed Viscous Air Spindle

2008 ◽  
Author(s):  
Guido M. J. Delhaes ◽  
Anton van Beek ◽  
Ron A. J. van Ostayen ◽  
Robert H. Munnig Schmidt
Keyword(s):  
High Speed ◽  
Load Capacity ◽  
Axial Direction ◽  
Cylindrical Part ◽  
Traction Forces ◽  
Micro Cutting ◽  
Tool Holder ◽  
Air Spindle ◽  
Prototype Design

In this paper an innovative air driven spindle for micro cutting applications is presented. The spindle uses a viscous traction concept which has the advantage that the viscous traction forces can act directly on the cylindrical part of the tool, which makes the tool-holder redundant. Furthermore, the tool can be actuated in the axial direction within the housing. In this paper the concept of the viscous turbine, a design of a prototype spindle along with the traction and load-capacity of the spindle are discussed.

scholarly journals The enhancement of cutting capacity of a grinding wheel when processing ductile steel blank parts by ultrasonic activation

2021 ◽  
pp. 55-62
Author(s):  
A. V. Khazov ◽  
◽  
A. N. Unyanin ◽  
Keyword(s):  
Numerical Simulation ◽  
Grinding Wheel ◽  
Ultrasonic Vibrations ◽  
Ultrasonic Activation ◽  
Workpiece Material ◽  
Steel Blank ◽  
Micro Cutting ◽  
Abrasive Grains ◽  
Junction Points ◽  
Cutting Capacity

The study aimed to identify the relations between the sticking intensity and ultrasonic vibrations (UV) used for processing and evaluate the wheels’ performance when grinding ductile materials blank parts. The authors carried out the numerical simulation of local temperatures and the 3H3M3F steel workpiece temperature when grinding by ultrasonic activation. The study determined that the application of ultrasonic vibrations with the amplitude of 3 µm causes the decrease in local temperatures by 13…40 %, and in blank part temperature – up to 20 %. The calculation identified that the activation of ultrasonic vibrations with the amplitude of 3 µm causes the decrease in the glazing coefficient by 33 % for cutting grain and by 7 % for deforming grain. When increasing the longitudinal feed rate or the grinding depth, the glazing coefficient increases to a lesser degree when using the ultrasonic vibration than in the case without ultrasonic activation. The authors carried out the numerical simulation of local temperatures when scratching the 3H3M3F steel specimens by single abrasive grains with ultrasonic activation. The sticking deformation and the stresses resulted from this deformation and affecting the junction points of sticking with grains with and without ultrasonic vibrations application are calculated. The experimental research included the micro-cutting of specimens with single abrasive grains. The experiments identified that the abrasive grains wear out and glaze to a lesser degree when micro-cutting a workpiece with ultrasonic vibrations activation. The lowering of the intensity of sticking of the workpiece material particles to the abrasive grains due to the adhesion causes the decrease in the glazing coefficient when using ultrasonic activation. The study considered the possibility to enhance the efficiency of flat grinding through the use of the energy of ultrasonic vibrations applied to a blank part in the direction with the grinding wheel axis. A workpiece fixed in the device between the vibration transducer and the support is one of the components of a vibration system. The authors performed the experiment when grinding 3H3M3F and 12H18N10T steel workpieces with the wheel face. When grinding with ultrasonic vibrations, the grinding coefficient increases up to 70 %, and the redress life increases twice or thrice.

scholarly journals Genetic Variation Analysis of Hevea brasiliensis Genotype Population of In Vitro Micro-Cutting Culture by RAPD Marker

2020 ◽  
Vol 4 (2) ◽  
pp. 57-62
Author(s):  
IRFAN MARTIANSYAH ◽  
NURHAIMI HARIS ◽  
TATI HUSNIYATI ◽  
EDI DJAUHARI PURWAKUSUMAH
Keyword(s):  
Genetic Similarity ◽  
Growth Response ◽  
Random Amplified Polymorphic Dna ◽  
Rapd Marker ◽  
Culture Technique ◽  
Similarity Coefficients ◽  
Micro Cutting ◽  
Explant Source ◽  
Dna Fragment

The rubber seeds are insufficient for producing rootstocks to rubber grafting. It can be overcome by an in vitro micro-cutting culture technique developed in the Indonesian Research Institute for Biotechnology and Bioindustry (IRIBB). However, the origin clone of 57 rubber genotypes used as an explant source in vitro micro-cutting culture is not recognized. The study was to investigate the 57 genotypes that came from mixed GT 1, PB 260, and RRIM 600 as parent clones. We investigated using seven primers of Random Amplified Polymorphic DNA (RAPD), i.e., OPA 02, OPA 07, OPA 15, OPB 04, OPC 05, OPC 11, and OPC 20. The qualitative analyzed by electrophoresis 1% gel agarose. A total of 47 DNA fragments produced with an average of 7 fragments per primer. OPA 02 generated of 13 fragments, whereas OPB 04 only one fragment. The DNA fragment pattern shows the presence of polymorphism. The genetic similarity coefficients obtained in the range of 62-96%. The highest genetic similarity (96%) is genotype 70 and 78. It recognized that 42 genotypes from 57 rubber genotypes had the closest relationship with PB 260 clones. Furthermore, six genotypes had a significant growth response as an explant in vitro micro-cutting culture.

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