PRECISION MICRO-MACHINING & SWISS TURNING
Swiss Lathe Micro-Turning & Parting Deflection Calculator
Compute guide bushing bar deflection ($\delta$), cutoff tool kerf width ($W$), spindle RPM, feed per revolution ($f_n$), and parting pip reduction geometry.
1. Bar Stock & Cutoff Inputs
Swiss bar stock capacity: typically 1mm - 32mm.
Rule of thumb: L ≤ 3 × D_bar without tailstock.
2. Speeds, Feeds & Deflection
Spindle Speed
0 RPM
Est. Deflection (δ)
0.0 µm
Parting Feed Rate
0.00 mm/rev
Parting Pip Angle
6° – 10°
3. Guide Bushing Turning Visualizer
Swiss CAM & Vector DXF Prepress Notes
1. Guide Bushing Support: Swiss-type lathes support stock directly adjacent to cutting tools. Deflection follows cantilever beam physics $\delta = \frac{F_c L^3}{3 E I}$. Maintaining stickout $L \le 3 \times D$ guarantees sub-micron precision.
2. Beveled Parting Insert Geometry: A $6^\circ - 10^\circ$ lead angle on the cutoff blade causes the component to sever before the center core breaks, leaving the parting pip on the scrap bar rather than the finished workpiece.