Finishing & Deburring

Magnetic Abrasive Finishing (MAF) & Precision Deburring Calculator

Model magnetic brush normal clamping forces ($F_n$), tangential shear friction ($F_t$), surface roughness reduction ($\Delta Ra$), and multi-axis CAM raster passes for complex internal passages and micro-deburring.

1. Input Parameters

Magnetic Flux Density $B$ (Tesla):

Magnetic field strength at the working pole gap (NdFeB or electromagnet).

Pole-to-Workpiece Working Gap $h_g$ (mm):

Physical clearance between the magnetic pole tip and the workpiece surface.

Abrasive Particle Mesh / Grain Size (µm):

Magnetic Pole Spindle Speed $N$ (RPM):

Rotational speed of the magnetic brush head.

Workpiece Traverse Feed Rate $v_f$ (mm/min):

Linear CNC table feed rate across the finishing toolpath.

Initial Surface Roughness $Ra_0$ (µm):

Starting surface roughness prior to MAF processing.

2. Calculation Results

Magnetic Normal Pressure ($P_n$)

0.0 kPa

Linear Cutting Speed ($v_c$)

0.0 m/s

Finished Roughness ($Ra_f$)

0.00 µm

Surface Improvement Ratio

0.0% Reduction

Material Removal Rate ($MRR$)

0.00 mg/min

Deburring Edge Radius ($r_e$)

0.0 µm

3. Dynamic Visualizer & CAM Preview

4. Engineering Notes & Physics Specifications

Magnetic Abrasive Finishing (MAF) Forces & Preston Material Removal:

Magnetic Force on Ferromagnetic Chains: Ferromagnetic abrasive particles align along magnetic field lines: $P_n = \frac{B^2}{2 \mu_0} \left(1 - \frac{1}{\mu_r}\right)$.
Surface Roughness Evolution: Roughness decreases exponentially: $Ra(t) = Ra_{\infty} + (Ra_0 - Ra_{\infty}) e^{-k \cdot P_n \cdot v_c \cdot t}$.
Internal Tube Finishing: Magnetic fields penetrate non-ferromagnetic walls (316L SS, titanium, brass), allowing external rotating magnets to finish internal bores without tool wear.

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