5-Axis CNC Machined 7075 Aluminum Robot Swing Arm | Complex Structure

This component is a critical robot swing arm, precision-engineered from aerospace-grade 7075-T6 aluminum. Utilizing advanced 5-axis CNC milling technology, we achieve the complex contours, deep pockets, and integrated mounting features required for high-performance robotic manipulators, ensuring exceptional dynamic stability and minimal deflection under load.

Project Overview

Core Parameters

Engineering Challenges & Solutions

• Complex, Lightweight Geometry: 5-axis simultaneous machining allowed single-setup production of deep, multi-angle cavities and contours, eliminating alignment errors from multiple setups and significantly reducing part mass while maintaining rigidity.
• High Stiffness Requirement: The inherent high modulus of 7075-T6, combined with strategic ribbing designed into the CAD model and realized through precise milling, ensured the arm met stringent deflection limits under maximum payload.
• Precision Bearing & Shaft Fits: Critical bore diameters were achieved with H7 tolerance using precision boring tools and in-process monitoring, guaranteeing perfect fit for bearings and shafts for smooth, zero-play rotation.

Advanced 5-Axis Machining Process

• Single-setup machining of all complex features to ensure unmatched accuracy.
• Use of variable helix end mills for efficient material removal and superior surface finish in deep pockets.
• In-process probing for datum establishment and feature verification, minimizing human error.

Quality Validation for Dynamic Components

• Full 3D scan report comparing as-built part to CAD model (GD&T analysis).
• Dimensional report for all critical bearing and mounting features.
• Material certification confirming 7075-T6 properties.
• Surface integrity report to ensure no micro-cracks from machining.