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sandy.xu@jyh-prototype.com

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Turnkey Precision Machining and Mechanical Sub-Assembly for Automated Equipment

2026-11-06

Custom-engineered industrial automation requires strict mechanical integrity, tight tolerances, and streamlined assembly. This project highlights our full-scope contract manufacturing capability—delivering precision CNC-machined components and complete, functional mechanical sub-assemblies ready for factory-floor integration.

Project Overview

Industry: Industrial Automation & Precision Machinery
Core Capabilities: Multi-axis CNC milling, CNC turning, surface treatment, precision hardware integration, and mechanical bench assembly
Materials: High-grade 6061-T6 / 7075 Aluminum alloy, structural steel fasteners, and custom linkage hardware
Surface Finishing: Matte black anodizing, gold contrast anodizing, and corrosion-resistant hardware coatings

Engineering & Manufacturing Challenges

Building multi-component modular assemblies involves challenges beyond simple part machining:

Tolerance Stacking: Assembling structural chassis plates with rotating linkages, cable/spool guides, and structural pedestals meant individual part tolerances had to be held within $\pm0.01 mm$ to prevent binding or misalignment across the assembly run.
Surface Quality & Aesthetic Consistency: Combining large-format structural plates with contrasting functional components (gold anodized handles and linkage arms) required uniform surface prep, bead-blasting, and consistent bath control across multiple production lots.
Turnkey Integration: The client required a complete mechanical sub-assembly delivered directly to their production line to minimize their internal assembly lead times and reduce inventory overhead.

Process Breakdown

Phase	Execution Details
DFM Review	Conducted Design for Manufacturability analysis on tool access, standardized tapped hole patterns, and optimized wall thicknesses to prevent warping during long-bed milling.
Multi-Axis CNC Machining	Milled chassis plates, spool wheels, linkage brackets, and mounting discs using high-speed multi-axis machining centers.
Surface Treatment	Applied uniform bead-blast finish followed by Type II anodizing (matte black for primary structural bodies, gold for handles and interface points).
Mechanical Sub-Assembly	Installed pressed dowels, precision bearings, linkage arms, guide pulleys, and stainless steel fasteners with torque-controlled assembly protocols.
Quality Control (QC)	Complete CMM verification for critical dimensions, hole locations, flatness verification, and dynamic clearance testing for rotating linkages.

Delivered Value & Results

100% Turnkey Delivery: Delivered batch units fully assembled and inspected, allowing the client to bolt the modules directly into their master automated system without extra bench work.
Flawless Motion & Fit: Tight GD&T controls eliminated backlash and binding across all articulating links and wheel mechanisms.
Shortened Lead Times: Parallel manufacturing of plate stock and turned hardware alongside in-house assembly reduced overall time-to-market by over 25%.

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