scholarly journals Ultrasonic Vibration and Cavitation-aided Micromachining of Hard and Brittle Materials

Procedia CIRP ◽  
2012 ◽  
Vol 1 ◽  
pp. 342-346 ◽  
Author(s):  
Ranko Tsuboi ◽  
Yasuhiro Kakinuma ◽  
Tojiro Aoyama ◽  
Hitoshi Ogawa ◽  
Seiji Hamada
Keyword(s):  
Ultrasonic Vibration ◽  
Brittle Materials ◽  
Hard And Brittle Materials

The Control System Construction of the Multifunctional Combined CNC Machine

2006 ◽  
Vol 315-316 ◽  
pp. 566-570
Author(s):  
Meng You Huo ◽  
Qin He Zhang ◽  
Jian Hua Zhang ◽  
Xing Ai
Keyword(s):  
Control System ◽  
Machine Tool ◽  
Ultrasonic Vibration ◽  
Brittle Materials ◽  
State Inspection ◽  
Servo Control ◽  
System Construction ◽  
Cnc Machine ◽  
Hard And Brittle Materials ◽  
The Stability

In this paper we present a multifunctional combined CNC machine that integrates the technology of USM, EDM and grinding. For non-conductive hard and brittle materials, the machine tool could perform ultrasonic machining and grinding machining combined ultrasonic vibration; for conductive hard and brittle materials, electrical discharge with or without ultrasonic vibration could be implemented. Conductive engineering ceramics have been used for elementary experiments, the results show that it is more efficient and more stable for processing this kind of materials by using the multifunctional combined CNC machine. On the basis of brief introduction about the structure of the machine tool, this paper emphasizes the form of control system, the gap state inspection that can be used to ensure the stability in processing and the principle for servo control.

Development of Ultrasonic Vibration Assisted Micro Electrochemical Discharge Machining Tool

2019 ◽  
Vol 12 (4) ◽  
pp. 313-325
Author(s):  
Xiaokun Li ◽  
Yuankai Ren ◽  
Zhiyuan Wei ◽  
Yong Liu
Keyword(s):  
Machine Tool ◽  
Surface Quality ◽  
Ultrasonic Vibration ◽  
Brittle Materials ◽  
Geometric Accuracy ◽  
Machining Performance ◽  
Machining Quality ◽  
Electrochemical Discharge Machining ◽  
Electrochemical Discharge ◽  
Hard And Brittle Materials

Background: The fabrication of microstructures with high machining quality is always difficult when it is concerned with non-conductive hard and brittle materials such as glass and engineering ceramics. It is reported in related papers and patents that Electrochemical Discharge Machining (ECDM) process is a good choice for machining non-conductive, hard and brittle materials. However, the machining performance of ECDM process, especially in the aspect of geometric accuracy and surface quality, needs to be greatly improved. Objective: The purpose of this study was to improve the machining quality of conventional ECDM process by introducing ultrasonic vibration to ECDM process, develop an Ultrasonic Vibration Assisted Micro Electrochemical Discharge Machining (UAECDM) tool, and investigate the improvements of the machining performance by means of comparative experiments. Methods: Firstly, the machining principle of UAECDM was investigated, and the effects of ultrasonic vibration are discussed with the analysis of the micro process. Secondly, the hardware system, which consists of a machine tool body, XY and Z axes, an ultrasonic spindle system and motion control system, was established; and the software system was developed based on the analysis of the overall workflow of the machining process. Finally, comparative experiments, including ECDM drilling, UAECDM drilling, ECDM milling and UAECDM milling, were carried out to reveal the improvements of the machining quality. Results: In the UAECDM group, a micro-hole with the inlet diameter of 133.2µm as well as the 3 × 3 array of micro holes was fabricated on the glass workpiece with 300µm thickness, and a microgroove with the width of 119.2µm was successfully milled on the glass workpiece. It is shown in both microscopic photographs and optical measurements that the microstructures fabricated by UAECDM have better machining quality compared with similar microstructures fabricated by ECDM. Conclusion: Based on comparative experiments and discussions of the results, it has been proved that the machine tool can meet the requirement of the ultrasonic vibration-assisted micro electrochemical discharge machining and can improve the geometric accuracy and surface quality significantly.

Mechanism study on ultrasonic vibration assisted face grinding of Hard and brittle materials

2020 ◽  
Vol 50 ◽  
pp. 520-527 ◽  
Author(s):  
Xiaofeng Zhang ◽  
Lin Yang ◽  
Yan Wang ◽  
Bin Lin ◽  
Yinghuai Dong ◽  
...  
Keyword(s):  
Ultrasonic Vibration ◽  
Brittle Materials ◽  
Mechanism Study ◽  
Hard And Brittle Materials ◽  
Face Grinding

Werkzeuge der ultraschallunterstützten Bearbeitung*/Modelling of an Actorsystem - Development of a tool for ultrasonic assisted machining with an axial-tangential vibration vector

2018 ◽  
Vol 108 (01-02) ◽  
pp. 53-57
Author(s):  
K. Drewle ◽  
T. Stehle ◽  
H: Möhring
Keyword(s):  
Contact Zone ◽  
Brittle Materials ◽  
Wird Eine ◽  
Alternative Method ◽  
Ultrasonic Assisted ◽  
Ultrasonic Assisted Machining ◽  
Hard And Brittle Materials ◽  
Feed Axis

Die schwingungsunterstützte Bearbeitung hat sich bereits bei der Zerspanung von hartspröden Werkstoffen mit einer einachsigen Schwingung in der Kontaktzone bewährt. Untersuchungen zu schwingungsunterstützten Bohrprozessen beschränken sich bisher auf eine Schwingungserzeugung, die entlang der Vorschubachse ausgerichtet ist. Für alternative Schwingungsrichtungen fehlt in erster Linie die geeignete Aktorik. In diesem Beitrag wird eine alternative Methode zur Erzeugung einer axial-tangentialen Schwingung in der Kontaktzone untersucht.   Ultrasonic assisted machining with uniaxial vibration is a well-proven process for machining hard and brittle materials. Existing investigations of vibration assisted drilling and boring processes so far are limited to an oscillation along the feed axis, which primarily due to nonexistent actuators. This contribution will present investigations into an alternative method for creating axial-tangential vibrations in the tool contact zone.

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