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PDF Horn Design for Rotary Ultrasonic Machining via FEM

ORIGINAL ARTICLE Design of horn for rotary ultrasonic machining using the finite element method Vinod Yadava & Aniruddha Deoghare Komaraiah and Reddy [8 9] shows the superior performance of rotary ultrasonic machining over conven tional Table 1 Specifications of horn for rotary ultrasonic machining using the finite element method 200

Ultrasonic Assisted Machining Overview Accessing

Machinability along with its associated facets is a critical parameter that ultimately determines the cost of machining Its optimization however is inherently limited by the current technology To surmount such limitations novel alternative machining technologies such as Ultrasonic Assisted Machining UAM have emerged The present study introduces UAM

Influence of different rare earth oxides on CNC ultrasonic machining

The current study aimed at the optimization of process parameters for microchannel fabrication on thermal sprayed carbide coatings using rotary ultrasonic machining RUSM Rare earth oxides REOs such as La₂O₃ CeO₂ and Er₂O₃ have been incorporated into WC Co Cr coatings to enhance machinability and improve coating characteristics

A feeding directional cutting force model for end surface

Rotary ultrasonic machining RUM with vertical ultrasonic vibration a non traditional machining process was an environmentally benign process with low machining cost in the hole making of hard to machine and brittle materials and the material removal of RUM combined the ultrasonic machining and conventional grinding [1] Because of its benefits RUM

The effects of elliptical ultrasonic vibration in surface machining

Compared with conventional surface grinding CSG process surface machining of carbon fiber reinforced plastic CFRP composites using rotary ultrasonic machining RUM with vertical ultrasonic vibration generates smaller cutting forces because of improved machining performance and more damages to the machined CFRP surface due to the intermittent

Evaluation of surface roughness based on sampling array for rotary

The rotary ultrasonic machining process combined ultrasonic vibration process grinding and milling as the ultrasonic vibration direction was perpendicular to the feed direction The sample was milled under the parameter settings 3000 rpm spindle rotary speed mm cutting depth 120 mm/min feed rate and 10 μm ultrasonic amplitude

Longitudinal torsional coupled rotary ultrasonic machining

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

Holistic review of drilling on CFRP composites Techniques

Cong et al compared high speed steel twist drilling and metal bonded diamond core drill rotary ultrasonic machining RUM on CFRP The study examined the effects on surface roughness Ra and delamination Twist drilling exhibits a greater surface roughness Ra than RUM in all feed rate operations The delamination decreased from to

Improving hole exit quality in rotary ultrasonic machining of ceramic

Rotary ultrasonic machining RUM is a hybrid machining process that is considered suitable for hole production in hard and brittle materials [7] It combines the material removal mechanisms of diamond grinding and ultrasonic machining They were manufactured to the same specifications with the same equipment Even so small manufacturing

Machining Performance Analysis of Rotary Ultrasonic

Wang et al [21 22] performed multiple rotary ultrasonic machining RUM tests on 2D C/SiC with an 8 mm diameter diamond core drill and showed that RUM could ameliorate the hole surface quality The drilling force and torque of the CD are higher than those of the RUAD according to the measured specifications

Rotary ultrasonic machining— a new cutting process and its

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

High frequency vibration effects on the hole integrity in rotary

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

Rotary ultrasonic machining of carbon fiber reinforced plastic

Rotary ultrasonic machining RUM has become an effective process for both hole making and surface grinding of carbon fiber reinforced plastic CFRP composites Unlike other brittle materials such as ceramic glass silicon etc CFRP composites exhibit inhomogeneous and anisotropic properties thereby resulting in different material removal

Effects of tool vibration on fiber fracture in rotary ultrasonic

The rotary ultrasonic machining RUM has been proved to be a beneficial method for C/SiC composites drilling with minor tearing defects at the hole exits In contrast the effects of tool vibration on surface topography in RUM of C/SiC composites considering fiber orientation have not been reported In order for a unique evaluation of surface

Prediction of subsurface damage depth in rotary ultrasonic machining

Subsurface damage SSD generated in rotary ultrasonic machining RUM process significantly deteriorates the technological and structural performance of the optical components However the invisibility of subsurface cracks underneath the machined surface makes it difficult to accurately and online evaluate the SSD depth In the present research incorporated with the probability

Longitudinal torsional coupled rotary ultrasonic machining

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

Investigation on three dimensional surface roughness evaluation of

Drilling process was also studied and considered that the rotary ultrasonic grinding machining can improve the surface roughness and reduce the burring significantly [6] Schorderet et al and Kai et al analyzed the brittle material small hole of ultrasonic machining and discussed the process parameters affecting the hole quality [7] [8]

Mechanical behavior of carbon fiber reinforced plastic during rotary

This paper presents an investigation into the machining of CFRP composites using rotary ultrasonic machining The study aims to analyze how various process parameters influence machining performance and to identify the optimal value of cutting force The design approach employed isolates the effects of individual characteristics and explores the

[PDF] Rotary ultrasonic machining of ceramic matrix

However significant challenges such as the lack of specifications databases and in service repair methodology and high machining cost still remain for their widespread applications In this paper rotary ultrasonic machining RUM is introduced into drilling holes on

Development of a Rotary Ultrasonic Machining Device and

Trajectory of Ultrasonic Assisted Grinding The grinding process can be approximated as a cutting process in which multiple abrasive grits participate at the same time The trajectory of the abrasive grits distributed at different positions of the ball end grinding wheel in the traditional mill grinding process can be regarded as constant velocity circular motions

PDF Investigation on float glass hole surface

specification of the float glass has been mentioned in T able 1 Also reported that the rotary ultrasonic machining and other vibration assisted machining processes are used explicitly to

Efficiency‐based compensations and the mechanical load

In rotary ultrasonic machining RUM an axial ultrasonic vibration is superimposed to the rotation of the tool The tool is usually electroplated or sintered diamond tool The axial ultrasonic vibration which is generated with a piezoelectric transducer based on the inverse piezoelectric effect is amplified by the horn and then transmitted to

Damage formation and suppression in rotary ultrasonic machining

Rotary ultrasonic machining RUM combines diamond grinding with small amplitude tool vibration to improve machining processes of hard and brittle materials It has been successfully applied to the machining of a number of brittle materials from optical glasses to advanced ceramics as well as ceramic matrix composites The emphasis of this

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