Effect of Ultrasonic Vibration Drilling on Cutting Stress Distribution

2012 ◽  
Vol 523-524 ◽  
pp. 191-196 ◽  
Author(s):  
Hiromi Isobe ◽  
Yusuke Uehara ◽  
Keisuke Hara
Keyword(s):  
Stress Distribution ◽  
Ultrasonic Vibration ◽  
High Speed ◽  
Side Wall ◽  
Drilling Process ◽  
Distribution Diagram ◽  
Heat Resistant Steel ◽  
Ultrasonic Drilling ◽  
Photoelastic Analysis ◽  
Vibration Drilling

A drill processing for the difficult to cut material such as ceramics, hardened steel, glass and heat-resistant steel is widely requested in the industrial world. Furthermore the drilling process becomes more and more difficult in the case of that the requested hole diameter is less than one millimeter. In order to achieve requirements for drilling process, ultrasonically assisted machining is applicable. Ultrasonic vibration assisted machining techniques are suitable to machine difficult-to-cut materials precisely. The ultrasonic vibration assisted sub-millimeter drilling process reduces the cutting forces and prevents severe wear of tools. However, it is difficult to observe directly the effect of vibration action because the process of ultrasonic drilling is dynamic instantaneous and micro cutting process. In this report, high speed camera with appropriately arranged polarized device realized the visualization of process of ultrasonic drilling based on the photoelastic analysis. For the conventional drilling, the stress distribution diagram showed the intensive stress occurred under the chisel and side wall. On the other hand, the ultrasonic drilling produced lower and stable cutting force and decreased the tool temperature.

Experimental Verification of Machining Process of Ultrasonic Drilling

2012 ◽  
Vol 516 ◽  
pp. 275-280 ◽  
Author(s):  
Hiromi Isobe ◽  
Yusuke Uehara ◽  
Keisuke Hara ◽  
Takashi Onuma ◽  
Arata Mihara
Keyword(s):  
Stress Distribution ◽  
High Speed ◽  
Cutting Process ◽  
Machining Process ◽  
Drilling Process ◽  
Distribution Diagram ◽  
Heat Resistant Steel ◽  
Ultrasonic Drilling ◽  
Photoelastic Analysis ◽  
Stress Boundary

Drill processing of difficult-to-cut materials such as ceramics, hardened steel, glass and heat-resistant steel is widely required in the industrial world. Furthermore the drilling process becomes more and more difficult in the case of hole diameters less than one millimetre. In order to achieve the requirements for the drilling process, ultrasonically assisted machining is applicable. Ultrasonic vibration assisted machining techniques are suitable for machining difficult-to-cut materials precisely. However, the cutting process of ultrasonic drilling has not been clarified. It is difficult to observe directly the effect of vibration. The aim of this study is to observe the dynamic, instantaneous and micro cutting process. In this report, a high-speed camera with a polarized device, which is appropriately arranged, realized the visualization of the process of ultrasonic drilling based on photoelastic analysis. For conventional drilling, the stress distribution diagram showed that the intensive stress occurred in limited areas under the chisel because the chisel edge of the drill produces large plastic deformation. On the other hand, the ultrasonic drilling produced spread stress distribution and a stress boundary far away from the chisel. The photoelastic analysis showed the explicit difference of drilling processes.

Drilling Force of SiC Particle Reinforced Aluminum-Matrix Composites with Ultrasonic Vibration

2009 ◽  
Vol 416 ◽  
pp. 243-247 ◽  
Author(s):  
Xing Xin Xu ◽  
Ya Lin Mo ◽  
Chuan Shao Liu ◽  
Bo Zhao
Keyword(s):  
Ultrasonic Vibration ◽  
Aluminum Matrix ◽  
Machining Process ◽  
Aluminum Matrix Composites ◽  
Drilling Process ◽  
Matrix Composites ◽  
Drilling Force ◽  
Ultrasonic Drilling ◽  
Vibration Drilling ◽  
Sic Particle

In recent years, particle reinforced metal matrix composites (PRMMCs）has been widely applied because of its excellent mechanical performances. But the machining is very difficult due to the rigidity of reinforced phase in it, thus the popularization of PRMMCs is restricted much. Here, a method of ultrasonic vibration drilling is presented to the hole-making of Aluminum-matrix composites based on cutting force analysis between common and vibration machining. In virtue of the self-developed ultrasonic drilling equipment, experiments of common and ultrasonic vibration drilling are performed on SiC particle reinforced Aluminum-matrix composites with different content of SiC by using two types of tungsten carbide twist drill. Since the tool life can be represented directly by drilling force, especially the torque, the study of drilling force is very important for the surface roughness, the design and life of drill. Drilling force and its variation in the machining process are analyzed by comparison of common and vibration drilling. It shows that the eviction of drilling chips can be meliorated to some extent, and the drilling torque can be reduced about 30% during the ultrasonic vibration drilling process.

Drilling Characteristics of SiC Particle Reinforced Aluminum-Matrix Composites with Ultrasonic Vibration

2010 ◽  
Vol 455 ◽  
pp. 302-306 ◽  
Author(s):  
Xing Xin Xu ◽  
Xiao Hui Zhang ◽  
Chuan Shao Liu ◽  
Bo Zhao
Keyword(s):  
Surface Quality ◽  
Ultrasonic Vibration ◽  
Rapid Development ◽  
Aluminum Matrix ◽  
Aluminum Matrix Composites ◽  
Drilling Process ◽  
Matrix Composites ◽  
Drilling Force ◽  
Vibration Drilling ◽  
Sic Particle

With the rapid development of aviation at home, particle reinforced metal matrix composites (PRMMCs) has been widely applied recently. But at the same time, the difficult machining has gradually been one of the most outstanding bottle-necks that restrict the rapid enhancement of productivity. Here, in virtue of the self-developed ultrasonic drilling equipment, hole-making experiments of common and ultrasonic vibration drilling are performed on SiC particle reinforced aluminum-matrix composites （SiCp/Al）with different content of SiC by using two types of tungsten carbide drill. Drilling characteristics of machining composites with ultrasonic vibration are analyzed from such respects as the composites crush, drilling force, drill wear and hole surface quality. Studies show that, during the ultrasonic vibration drilling process, SiC particle in the composites is prone to break along the crystal connection boundary or suffer ductile fracture under the dynamic ultrasonic impulse, in which the cutting resistance could be reduced and the tool edge could be protected. Thereby, drilling locating precision and hole surface quality could be enhanced, wear of the drill chisel edge effectively improved, and the drilling torque reduced about 30%.

scholarly journals Visualization of Stress Distribution on Ultrasonic Vibration Aided Drilling Process

2012 ◽  
Vol 6 (6) ◽  
pp. 771-780 ◽  
Author(s):  
Hiromi ISOBE ◽  
Yusuke UEHARA ◽  
Manabu OKADA ◽  
Tomio HORIUCHI ◽  
Keisuke HARA
Keyword(s):  
Stress Distribution ◽  
Ultrasonic Vibration ◽  
Drilling Process

Mechanism of chip formation in ultrasonic vibration drilling and experimental research

2019 ◽  
Vol 233 (15) ◽  
pp. 5214-5226 ◽  
Author(s):  
Shuo Chen ◽  
Ping Zou ◽  
Hao Wu ◽  
Di Kang ◽  
Wenjie Wang
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Ultrasonic Vibration ◽  
Experimental Research ◽  
Drilling Process ◽  
Superior Surface ◽  
Series Of Experiments ◽  
Vibration Drilling ◽  
Conventional Drilling ◽  
Selection Of

When difficult-to-machine materials are drilled, chips are produced, and these chips are difficult to control during the drilling process. Due to the limitations of conventional drilling, materials are drilled by ultrasonic-vibration-assisted technology. In this paper, the kinematics of ultrasonic-vibration-assisted drilling are first analyzed and the relevant equations are established. The characteristic thicknesses of chips are then studied, and the drilling paths for different phases and thicknesses of the chips are analyzed. The condition of complete geometric chipbreaking in the ultrasonic-vibration-assisted drilling process is examined, and a regional map of chipbreaking is presented, which in theory allows chips to be controlled. Chips produced in ultrasonic-vibration-assisted drilling with different parameters are compared in a series of experiments. The chipbreaking condition is studied in more detail, and the chips produced by drilling difficult-to-machine materials are effectively controlled. Furthermore, the results of this study show that a reasonable selection of parametric variables in ultrasonic-vibration-assisted drilling results in thin and smooth chips, less tool wear, and superior surface roughness.

Removal Mechanism of Titanium Alloy Material in Ultrasound Vibration Drilling

2020 ◽  
Vol 993 ◽  
pp. 3-11
Author(s):  
Tian Qi Wang ◽  
Zhan Feng Liu ◽  
Yuan Ying Qiu ◽  
Ya Zhou Feng ◽  
Xiao Lan Han
Keyword(s):  
Titanium Alloy ◽  
Ultrasonic Vibration ◽  
Removal Rate ◽  
Small Diameter ◽  
Simulation Software ◽  
Drilling Process ◽  
Element Simulation ◽  
Alloy Material ◽  
The Difference ◽  
Vibration Drilling

In drilling the ultra-slim small diameter deep hole of titanium alloy, the problem of chip breaking and chip removal is common. When the drill is working normally, the ultrasonic vibration can be applied for the drill bit to cut the bit in the vibration to form a pulse. The cutting force waveform in drilling, should select the reasonable vibration frequency, amplitude, feed amount, workpiece rotation and other parameters to match, control the size and shape of the chip, get satisfactory chips, and avoid chip clogging. In this study, the ANSYS finite element simulation software was used to simulate the TC4 drilling process, and the difference between ultrasonic vibration drilling and ordinary drilling was analyzed. Drilling experiments were carried out. The experimental results show that compared with conventional drilling, ultrasonic vibration drilling has better surface quality, reduced tool wear and increased material removal rate.

scholarly journals Drilling of Additive Manufactured Poly Lactic Acid Modified byDrilling of Additive Manufactured Poly Lactic Acid Modified by Ultrasonic Vibration Ultrasonic Vibration

2021 ◽  
Author(s):  
Mohammad Baraheni ◽  
Mohammad Reza Shabgard ◽  
Saeid Amini
Keyword(s):  
Lactic Acid ◽  
Ultrasonic Vibration ◽  
Cutting Tool ◽  
Poly Lactic Acid ◽  
Drilling Process ◽  
Manufacturing Method ◽  
Ultrasonic Drilling ◽  
Chip Adhesion ◽  
The Stability

Abstract Complex geometries can be produced by using additively manufacturing method (AM). As usual, the AM parts have rough surfaces in which post processing operations are needed. One of the useful operations is ultrasonic drilling process. In this process, an additional movement is added to the cutting tool to improve the machinability factors. In this study, poly lactic acid(+) was selected as workpiece where the quality of the holes generated by ultrasonic drilling, were investigated. The examination parameters were delamination, circularity, and cylindricality. As a result, it was shown that UD process could properly improve the examination parameters. It was explained that harmonic movement of drill bit in UD improved the stability of the process by a decrease in cutting forces and chip adhesion. Moreover, a significant reduction was observed in delamination factor by using ultrasonic vibrations.

Research and Development of Embedded CNC System for Drilling Based on ARM

2011 ◽  
Vol 291-294 ◽  
pp. 2733-2736 ◽  
Author(s):  
Bang Fu Wang
Keyword(s):  
Operating System ◽  
Real Time ◽  
Ultrasonic Vibration ◽  
High Performance ◽  
Drilling Process ◽  
Embedded Operating System ◽  
Cnc System ◽  
Interface Circuit ◽  
Depth Study ◽  
Vibration Drilling

Based on the in-depth study of embedded systems technology and characteristics of the ultrasonic vibration drilling process, the new CNC system for ultrasonic vibration drilling based on ARM and μC / OS-II embedded was proposed in this paper. For this system, the kernel of hardware is the 32 -bit embedded CPU LPC2210 with characteristics of high performance and low power consumption. And it is also equipped with the required peripheral modules to extend itself to one whole hardware system and the interface circuit. Its software is based on μC / OS -II real -time embedded operating system, and the required application software needs to be developed so as to turn μC / OS- II real -time embedded operating system into one practical embedded ultrasonic CNC drilling.

Experimental Study on Ultrasonic Vibration Drilling of Titanium Alloy Micro-Hole

2012 ◽  
Vol 588-589 ◽  
pp. 1877-1880 ◽  
Author(s):  
Zhan Feng Liu ◽  
Huan Chang Zhang
Keyword(s):  
Titanium Alloy ◽  
Ultrasonic Vibration ◽  
Cutting Parameters ◽  
Hole Drilling ◽  
Drilling Process ◽  
Basic Principles ◽  
Actual Structure ◽  
Tc4 Titanium Alloy ◽  
Micro Hole ◽  
Vibration Drilling

Through the analysis of the basic principles of vibration drilling and vibration drilling process, in the drilling device and the cutting parameter sides , combined with the actual structure of the workpiece as well as the ultrasonic vibration drilling processing methods to elaborate, using the ultrasonic vibration drilling device to carry out the TC4 titanium alloy micro-hole drilling test. The test prove that selecting reasonable cutting parameters can solve the problem of drillingTC4 titanium alloy micro-hole that size is Φ1.5mm × 12mm , fully reflects the superiority of the ultrasonic vibration drilling. A new method was afforded for titanium alloy micro-hole drilling.

Titanium Alloy Ultrasonic Vibration Micro Deep Holes Drilling

2014 ◽  
Vol 1004-1005 ◽  
pp. 1382-1385 ◽  
Author(s):  
Zhang Feng Liu ◽  
Pei Xuan Yang
Keyword(s):  
Titanium Alloy ◽  
Ultrasonic Vibration ◽  
Small Diameter ◽  
Hole Drilling ◽  
Deep Hole ◽  
Tc4 Titanium Alloy ◽  
Ultrasonic Drilling ◽  
Micro Hole ◽  
Vibration Drilling

Through analyzing and comparing the ultrasonic drilling and general drilling, exported from cutting dosage and burr , etc, using the ultrasonic vibration drilling device to carry out the TC4 titanium alloy micro-hole drilling test. The ultrasonic vibration drilling more suitable than general drilling for the processing of Titanium Alloy, and solve Φ 2.0 x 20 TC4 Titanium Alloy drilling of small diameter deep hole problem. Fully embodies the advantages of ultrasonic vibration drilling.

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