C400K Twin-Arm Gantry: Two-Machine Tending and Surface-Safe Outfeed

The described configuration serves two C400K machines.

Technical application analysis. Parts within 5 kg; two C400K CNC lathes; external twin-arm gantry and central store.

Reference configuration and timing

The described configuration serves two C400K machines.
It states parts within 5 kg and approximately 10–12 s exchange.
Chute, conveyor and return-to-storage are different discharge options.

Engineering evaluation

Clarify whether the two arms operate independently, their individual load limits and their permitted shared zones. The name twin-arm does not prove two components can enter a machine together.

Returning parts can help control contact damage but also returns coolant and chips toward the storage system. Validate drainage, clean pockets and part identity; conveyor outfeed instead needs a full-buffer signal and stable part spacing.

Selection conditions and evidence limits

No specific part, material or automotive customer is identified. Preserve the time range and avoid treating an 11 s midpoint as an observed test.

Application questions

Does a twin-arm arrangement mean simultaneous loading?

Only if the machine access, control sequence and arm clearances permit it.

Why separate the outfeed options?

They differ in contact conditions, travel, buffering and the required fault signals.

Sources and evidence

Source record 87 — www.dongbuskgroup.com (Chinese reference)

Reviewed 4 November 2026. Source statements and engineering evaluation are identified separately. The references do not establish a New Partner delivery or customer acceptance result.