Research on removal function of fluid hydrodynamic fixed abrasive grinding

Area of Science:

• Materials Science and Engineering
• Mechanical Engineering
• Fluid Dynamics

Background:

• Fluid hydrodynamic fixed abrasive grinding (FHFAG) is an emerging finishing technology with significant potential in precision engineering.
• A critical gap in current FHFAG research is the lack of a robust theoretical foundation for the material removal function.
• Existing methods lack precise predictive capabilities for material removal rates and surface finish.

Purpose of the Study:

• To establish a theoretical basis for the material removal function in Fluid Hydrodynamic Fixed Abrasive Grinding (FHFAG).
• To develop and validate a fully coupled flow deformation model for predicting FHFAG performance.
• To provide a practical tool for optimizing FHFAG processes.

Main Methods:

• Development of a fully coupled flow deformation model integrating fluid dynamics and solid mechanics.
• Theoretical analysis of hydrodynamic pressure distribution and film thickness considering grit-pad interactions.
• Integration of the material removal mechanism with the hydrodynamic model to define the removal function.
• Experimental validation of the theoretical removal function predictions.

Main Results:

• The developed model accurately describes hydrodynamic pressure distribution and film thickness within the microchannels formed by grinding grits.
• The theoretical removal function derived from the model shows strong agreement with experimental results.
• The study successfully verified the practicability and predictive power of the FHFAG removal function model.

Conclusions:

• A comprehensive theoretical framework for the removal function in FHFAG has been successfully established.
• The validated model provides a powerful tool for understanding and controlling material removal in FHFAG processes.
• This research paves the way for enhanced precision and efficiency in advanced grinding and lapping applications.