Experimental Investigation of Vibratory Finishing Process

2014 ◽  
Author(s):  
Xiaozhong Song ◽  
Rahul Chaudhari ◽  
Fukuo Hashimoto
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Metal Removal ◽  
Contact Forces ◽  
Chemical Solution ◽  
Impact Frequency ◽  
Vibratory Finishing ◽  
Factors Affecting ◽  
Finishing Process ◽  
Chemical Solutions

The vibratory finishing process is widely used for finishing metal components. An experimental investigation is reported on the factors affecting the metal removal and resultant surface roughness during vibratory finishing including the influence of chemical solutions. The effect of process parameters such as media size and impact frequency is studied by measuring the contact forces. A method to investigate the effect of chemical solution and to optimize the processing time to achieve desired resultant surface roughness is presented.

scholarly journals Predictive Models of Double-Vibropolishing in Bowl System Using Artificial Intelligence Methods

2019 ◽  
Vol 3 (1) ◽  
pp. 27
Author(s):  
Joselito Alcaraz ◽  
Kunal Ahluwalia ◽  
Swee-Hock Yeo
Keyword(s):  
Surface Roughness ◽  
Predictive Modelling ◽  
Surface Finishing ◽  
Configuration Model ◽  
Percentage Error ◽  
Vibratory Finishing ◽  
Exponential Regression ◽  
Finishing Process ◽  
Family Of Curves ◽  
Exponential Regression Model

Vibratory finishing is a versatile and efficient surface finishing process widely used to finish components of various functionalities. Research efforts were focused in fundamental understanding of the process through analytical solutions and simulations. On the other hand, predictive modelling of surface roughness using computational intelligence (CI) methods are emerging in recent years, though CI methods have not been extensively applied yet to a new vibratory finishing method called double-vibropolishing. In this study, multi-variable regression, artificial neural networks, and genetic programming models were designed and trained with experimental data obtained from subjecting rectangular Ti-6Al-4V test coupons to double vibropolishing in a bowl system configuration. Model selection was done by comparing the mean-absolute percentage error and r-squared values from both training and testing datasets. Exponential regression was determined as the best model for the bowl double-vibropolishing system studied with a Test MAPE score of 6.1% and a R-squared score of 0.99. A family of curves was generated using the exponential regression model as a potential tool in predicting surface roughness with time.

New Viscoelastic Magnetic Abrasive and its Surface Finishing Process

2011 ◽  
Vol 314-316 ◽  
pp. 300-303 ◽  
Author(s):  
Wen Hui Li ◽  
Xiu Hong Li
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Practical Problem ◽  
Positive Impact ◽  
Complex Surface ◽  
Surface Finishing ◽  
Simple Test ◽  
Test Device ◽  
Finishing Process ◽  
Magnetic Abrasives

In order to solve the practical problem of deburring and surface finishing of internal hole surface, mold cavity, complex surface, etc., a new viscoelastic magnetic abrasives is proposed based on analysis of field characteristic and existing finishing process. Viscoelastic magnetic abrasives are prepared, and motion locus of abrasives are discussed. An experimental investigation is engaged on direct hole, keyway surface through a simple test device designed by ourselves. Theoretical analysis and experiments show that all burrs is removed, the edges are rounded off and the surface is smooth, the value of surface roughness Ra drops from 0.53μm to 0.05μm. It’s successful application will effectively solve the practical difficulty of deburring and surface finishing for special shapes such as groove, keyway, etc. and fulfil the quantitative finishing of complex surfaces. It will produce a positive impact on precision surface finishing technology.

scholarly journals Experimental investigation to predict metal removal and surface roughness in wire cut process

2016 ◽  
Vol 9 (3) ◽  
pp. 49-58
Author(s):  
Saad Kariem Shather ◽  
◽  
Abbas Fadhil Ibrahim ◽  
Diana Abed al kareem Noori ◽  
◽  
...  
Keyword(s):  
Surface Roughness ◽  
Experimental Investigation ◽  
Metal Removal

Analysis of the Acceleration Transfer in the Unguided Vibratory Finishing Process

2019 ◽  
Author(s):  
Maximilian Lachenmaier ◽  
Marius Ohlert ◽  
Daniel Trauth ◽  
Thomas Bergs
Keyword(s):  
Removal Rate ◽  
Contact Forces ◽  
Vibratory Finishing ◽  
Contact Conditions ◽  
Measurement Systems ◽  
Finishing Process ◽  
Transfer Behavior ◽  
Input Variables ◽  
Finishing Processes ◽  
First Time

Abstract The work bowl acceleration of a vibratory finishing machine is mainly determined by the process input variables, e. g. the mass distribution between the upper and the lower imbalance weights, the offset angle between these imbalance weights and the rotational speed of the imbalance motor. The acceleration of the work bowl has a strong effect on the acceleration of the abrasive media and workpiece within the work bowl and thus on their movement. This movement indirectly determines the contact conditions, contact forces and relative velocities, between the abrasive media and the workpiece. The contact conditions have a strong effect on the material removal rate and the surface roughness of the machined workpieces in a vibratory finishing process. Due to the fact that the contact conditions can hardly be measured during the vibratory finishing process a comprehensive understanding of the transfer behavior of the work bowl acceleration on the acceleration of the abrasive media and the workpiece and thus on the prevailing contact conditions is necessary. Therefore, this publication presents an innovative approach to identify these cause-effect relationships, in order to determine the machining intensity based on the work bowl acceleration as a function of the process input variables. Hence, new measurement systems are presented which enable the determination of the acceleration of the abrasive media and the workpiece as a function of the acceleration of the work bowl of a vibratory finishing machine for the first time. Based on these investigations it is possible to identify significant areas for the work bowl acceleration, as well as for the acceleration of the abrasive media and the workpiece and thus for the contact conditions, contact forces and relative velocities, which can be used for a targeted control of the machining intensity of vibratory finishing processes.

Simulation of 1D Abrasive Vibratory Finishing Process

2012 ◽  
Vol 565 ◽  
pp. 290-295 ◽  
Author(s):  
Prakasam Pradeep Kumar ◽  
Subbiah Sathyan
Keyword(s):  
Material Removal ◽  
Aerospace Industry ◽  
Three Dimensional ◽  
Contact Forces ◽  
Vibratory Finishing ◽  
One Dimensional ◽  
Finishing Process ◽  
Body Dynamics ◽  
The Media ◽  
Multi Body

The vibratory finishing process involves three dimensional motion of abrasive media interacting with part surfaces. With the ultimate goal of simulating such media motion in laboratory conditions, we present here a first step that makes use of a tribometer’s recipricating drive to provide one dimensional controlled vibrations. Finishing experiments using this setup are conducted using abrasive media and titanium alloy work material, both of the type typically used in aerospace industry. Material removal rates, surface roughness and contact forces are measured in two different setups. The media motion is also modelled using multi-body dynamics to predict the contact forces between the media and the work surface. Experimental results are seen to follow literature reported and model predicted trends. This work paves the way for a true three dimensional simulator for a vibratory finishing process.

scholarly journals Modeling of Contact Forces for Brushing Tools

Ceramics ◽  
2021 ◽  
Vol 4 (3) ◽  
pp. 397-407
Author(s):  
Eckart Uhlmann ◽  
Anton Hoyer
Keyword(s):  
Surface Roughness ◽  
Tool Wear ◽  
Process Parameters ◽  
Prediction Method ◽  
Contact Forces ◽  
Process Models ◽  
Surface Finishing ◽  
Finishing Process ◽  
Multi Body ◽  
Insufficient Knowledge

Brushing with bonded abrasives is a flexible finishing process used for the deburring and the rounding of workpiece edges as well as for the reduction of the surface roughness. Although industrially widespread, insufficient knowledge about the contact behavior of the abrasive filaments mainly causes applications to be based on experiential values. Therefore, this article aims to increase the applicability of physical process models by introducing a new prediction method, correlating the contact forces of single abrasive filaments, obtained by means of a multi-body simulation, with the experimentally determined process forces of full brushing tools during the surface finishing of ZrO2. It was concluded that aggressive process parameters may not necessarily lead to maximum productivity due to increased tool wear, whereas less aggressive process parameters might yield equally high contact forces and thus higher productivity.

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