Menu
Rotary ultrasonic machining of ceramics and ceramic matrix composites has demonstrated that RUM can reduce the cutting force and the edge chipping size [11 21 22] significant challenges such as the lack of specifications databases and in service repair methodology and high machining cost still remain for their widespread applications
Rotary ultrasonic machining RUM exhibits a high potential for a significant reduction in the cutting force which directly associates with tool wear machining accuracy machining temperature and surface integrity However the improvement mechanisms of the ultrasonic vibration on the cutting force are still not fully recognized restricting
Abstract In conventional ultrasonic machining USM brittle materials are machined by using ultrasonic impacts on the workpiece through a medium of abrasive slurry In this paper a new cutting process that resulted due to introduction of an additional parameter namely the rotation of the workpiece during the machining is presented This may be called
during float glass machining rotary ultrasonic machining was invented in 1964 Zhang et al 1998 ; Jain and Pandey 2016 Rotary ultrasonic machining RUM
Highlights A power consumption measurement method in rotary ultrasonic machining RUM is proposed Effects of ultrasonic power tool rotation speed feedrate and type of CFRP on power consumption are investigated Power consumption percentages of each component are studied Ultrasonic power supply in RUM system is not the largest power
Abstract Rotary ultrasonic machining RUM is an effective solution to cut grind or drill the advanced brittle hard materials Contactless rotary transformer with the advantages of high power transmission efficiency and reliability is a potential structure to transmit electric power in RUM In this study an impedance model of rotary ultrasonic holder RUH is established to
A study on machining CFRP composites by rotary ultrasonic machining RUM has been carried out to explore the influence of process parameters on machining performance and to determine the optimal cutting force value The design approach was used to determine the effects of each of these characteristics independently and the effects of their interactions A
Zirconia ZrO 2 ceramics as advanced structural ceramics are gradually used in manufacturing aerospace and other fields due to their excellent it is problematic to process the ZrO 2 ceramics by conventional machining This study adopted the longitudinal torsional coupled rotary ultrasonic machining to process the ZrO 2 ceramics
Pocket milling has been regarded as one of the most widely used operations in machining The surface quality of the machined pockets is an essential aspect of any engineering and medical applications In the current study rotary ultrasonic machining RUM was applied for milling micro pockets on alumina Al2O3 ceramic The objective of this research was to
Rotary ultrasonic machining RUM is widely employed in high performance machining of challenging to machine materials particularly in ceramic based composites advanced ceramics and optical glass [[1] [2] [3]] Rotating magnetostrictive ultrasonic transducers GMUT play a pivotal role in generating ultrasonic vibrations for RUM and their
Rotary ultrasonic machining has been used to drill many materials including metal alloys ceramics and composites and its cost advantages have been demonstrated in many previous studies
Rotary ultrasonic machining RUM is one of the cost effective machining processes available for the machining of advanced materials [6 8] RUM is a non traditional machining process that combines the material removal mechanisms of diamond grinding and ultrasonic machining USM resulting in higher material removal rate MRR
Abstract Rotary ultrasonic machining RUM is an effective solution to cut grind or drill the advanced brittle hard materials Contactless rotary transformer with the advantages of high power transmission efficiency and reliability is a potential structure to transmit electric power in RUM In this study an impedance model of rotary ultrasonic holder RUH is established to
Rotary ultrasonic assisted machining RUAM processes have been recognized as leading non traditional high precision machining processes that have been recently developed to machine a vast range
Rotary ultrasonic elliptical machining is introduced to high speed end milling of Ti6Al4V for the first time Specifications for the end mill are given in Table 2 To control the influence of the tool cutter run out the end mills in experiments were selected to guarantee a rotary precision within 5 μm The self designed ultrasonic power
Therefore there is a need for an efficient process for machining of the bio ceramic materials Among non conventional machining processes applied for the machining of bio ceramics rotary ultrasonic machining RUM has relatively low cost and is environmentally friendly as reported in [9 10] RUM is a hybrid non conventional mechanical
The specifications of the drilling parameters are summarized in Table 2 Emphasizing that the drilling depth of all the experiments was 4 mm to guarantee the CFRP plates with thickness of mm were completely drilled Rotary ultrasonic elliptical machining for side milling of CFRP Tool performance and surface integrity Ultrasonics 59
سؤال 
WhatsApp