SI-Diff: A Framework for Learning Search and High-Precision Insertion with a Force-Domain Diffusion Policy

Motivation

TacDiffusion (ICRA 2025)
Misalignment < 2 mm
Clearance = 0.1 mm

TacDiffusion (ICRA 2025)
Misalignment > 2 mm
Clearance = 0.1 mm

Ours
Misalignment > 2 mm
Clearance = 0.1 mm

Training Shape

Demo Image

Cuboid Peg
35 mm × 25 mm × 60 mm
0.1 mm clearance

2 mm

5 mm

Unseen Shapes

Demo Image

Hexagonal prism
60 mm × 19 mm (flat-to-flat)
0.1 mm clearance

2 mm

5 mm

Demo Image

Pentagonal prism
60 mm × 19 mm (flat-to-flat)
0.1 mm clearance

2 mm

5 mm

Demo Image

Triangular prism
60 mm long with a side length of 34 mm
0.1 mm clearance

2 mm

5 mm

Demo Image

Cylinder
60 mm long with a diameter of 20 mm
0.1 mm clearance

2 mm

5 mm

Demo Image

Standard USB-A

2 mm

5 mm