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Study on Rotary Ultrasonic Machining for Brittle Materials

Author: WangHuaiBin
Tutor: FangFengZhou
School: Tianjin University
Course: Precision instruments and machinery
Keywords: Brittle materials processing Rotary ultrasonic grinding equipment Processing
CLC: TG580.6
Type: Master's thesis
Year: 2010
Downloads: 203
Quote: 3
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Abstract


The traditional ultrasonic machining tools vibration driven by the impact of the abrasive suspension of the material surface to achieve the purpose of the removal of material , brittle materials processing has made great breakthrough , but there are still fast tool wear , machining accuracy and low efficiency . Electroplated or sintered diamond tools rotary ultrasonic grinding to overcome these shortcomings , but also has the advantages of small cutting force, cutting heat , efficient processing can be applied to a variety of hard and brittle materials in recent years, becoming hard and brittle material processing applications, the focus of the study . At present , the international community has some developed countries to develop a rotary ultrasonic grinding equipment , but our research for this type of equipment is relatively small . In addition, there is a large room for improvement in terms of processing technology and equipment quality . The most common rotary ultrasonic grinding equipment using the contact brush - powered , there are following two main drawbacks : the need for a special spindle design ; high-speed rotating the serious brush wear and easy to out-of-step . Connected with the tool ultrasonic vibration system there are also large in size , versatility and poor , can only be applied on a specific machine . In order to solve these technical problems , this thesis Several studies work as follows : 1) the method of the electromagnetic conversion - powered , non-contact ultrasonic power and vibration system power supply ; 2 ) rotary ultrasonic grinding system the ultrasonic power requirements , the development of programmable digital frequency synthesis ultrasonic power can be achieved ; 3 ) to design a standard spindle interface ultrasound SHANK , including ultrasonic vibration of the transducer and horn in the SHANK internal integrated system ; 4 ) will include non-contact power supply system, digital frequency synthesis ultrasound power , integrated ultrasound shank system , integrated in a high-speed machine tools , hard and brittle material plane , punching processing experiments . The experiments show that the studied device is suitable for used in rotary ultrasonic grinding of hard and brittle materials .

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CLC: > Industrial Technology > Metallurgy and Metal Craft > Metal cutting and machine tools > Grinding and grinding machine > General issues > Grinding process
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