Published 01/13/2025

Midaco’s Automatic Pallet Changer Enhances VMC Versatility

Midaco’s Automatic 4-Pallet Changer with trunnion system for VMCs enables fourth-axis machining, expanding versatility of a three-axis mill.

Automation

Edited by: Chris Pasion

Managing Editor, Modern Machine Shop | Production Machining

Source: Midaco Corp.

Midaco Corp.’s Automatic 4-Pallet Changer with trunnion system for CNC machining is designed for seamless integration with VMCs. The system is said to optimize workflows by eliminating idle time while increasing spindle utilization and flexibility for complex jobs.

Midaco’s four-pallet shuttle system is engineered for both high-volume production and low-volume, high-mix jobs, enabling continuous operation without interruption. Operators can stage multiple operations of a production job or load a series of different parts on four pallets, which automatically shuttle into the machining area when the spindle completes a cycle. This setup enables operators to load and unload parts on one pallet while machining continues on another, reducing idle time and increasing productivity.

Midaco’s 4-Pallet Changer features durable cast aluminum or cast-iron pallets in XY sizes ranging from 28" × 15" (711 × 381mm) to 50" × 24" (1270 × 609 mm). Each pallet is automatically transferred with ±0.0001" (0.0025 mm) repeatability onto a cast-iron receiver mounted directly on the machine table that supports up to 500 lbs (226 kg) for smaller models and up to 2,000 lbs (908 kg) on larger models with weight evenly distributed. This system is powered by a servo drive and equipped with a rotary shuttle, automatic door and CE light curtain for safety.

The shuttle system’s two loading stations allow clear access to all four pallets with no overhead obstruction, making it well suited for workflows requiring heavy part handling or crane loading.

For added versatility, Midaco’s Automatic 4-Pallet Changer integrates a trunnion system that enables fourth-axis operations on a three-axis VMC. Equipped with four trunnions, the system uses a single fourth-axis rotary indexer (not included) to power all trunnions, and eliminates any need for cable management, simplifying the process. This feature helps when handling parts with complex geometries, angled surfaces or multisided components, making it possible to perform intricate work in a single setup. The included actuator assembly provides smooth, reliable trunnion movement and straightforward operation. The trunnion system minimizes operator intervention, boosting throughput, Midaco says.

Midaco’s 4-Pallet Changer is fully integrated with the VMC via M codes, enabling operators to control the system directly from the VMC’s control panel. This ease of use reduces training time and enables faster production startup, enabling operators to manage the pallet changer with confidence.

According to Midaco, the 4-Pallet Changer helps shops maximize their CNC equipment’s potential by enabling uninterrupted machining, expanding part-loading capacity and integrating fourth-axis machining on three-axis equipment.