Precision 6061 Square Base Ring Adapter Flange with Multi-Layer Hole Positional Control

We successfully manufactured a precision 6061 square base ring adapter flange for a servo motor mounting application. This structural adapter features a square base with an integrated circular ring interface, incorporating hollow sections with tight internal corners and multiple layers of mounting holes in varying orientations — presenting significant machining challenges including confined corner finishing in hollow sections and multi-layer multi-directional hole positional accuracy. Through specialized corner tooling, optimized toolpath strategies, and single-setup precision machining, we delivered dimensionally accurate flanges with clean internal features and consistent hole positioning.

Project Overview

Key Technical Highlights

• Confined Corner Finishing: Implemented specialized corner finishing tools (lollipop and tapered end mills) with optimized contouring toolpaths to achieve clean internal corners (≤0.5mm radius) in confined hollow sections — eliminating material buildup and stress risers without damaging adjacent surfaces.
• Process Innovation:
  • Specialized Corner Tooling: Custom small-diameter lollipop end mills with extended reach access confined corner geometries, achieving clean material removal in tight internal corners.
  • Single-Setup Machining: Complete flange geometry — square base, circular ring, hollow sections, and all mounting holes — machined in a single fixturing setup, ensuring ±0.01mm positional accuracy across all multi-layer hole arrays.
  • Multi-Directional Hole Strategy: Precision boring and spot-drilling sequences for holes in varying orientations maintain consistent positional accuracy across all layers without re-fixturing errors.
  • Controlled Finishing Sequence: Finish passes optimized for corner access and surface finish maintain Ra≤1.6μm on all interface surfaces.
• Surface Quality:
  • Precision finishing achieves Ra≤1.6μm surface finish on all interface surfaces.
  • Clean corner finishing eliminates burrs and stress risers in confined geometries.

Quality Verification

Each component underwent comprehensive inspection using CMM measurement for dimensional accuracy (±0.015mm), hole positional tolerance (±0.01mm), and flatness (≤0.01mm), supplemented by surface roughness testing (Ra≤1.6μm) and visual inspection for corner quality and surface defects.

Industry Applications

This solution demonstrates our expertise in precision adapter flange manufacturing, ideal for:
✓ Servo motor mounting adapters ✓ Precision equipment interface flanges ✓ Motor-to-mechanism adapter plates ✓ Custom mounting solutions

Why Partner With Us?

• Proven expertise in confined corner finishing with specialized tooling
• Advanced multi-layer hole positional accuracy through single-setup machining
• Precision multi-directional hole capability
• 12+ years of precision manufacturing experience across automation and motion control sectors