How a 25-Ton Roller AGV Connected Two Machining Workflows
Heavy transport becomes a systems-engineering problem when the load, route, and production equipment must interact automatically. In this case, the central task was moving machined parts and loaded carrier racks in machining production. HENSEN’s response was a 25-ton roller-deck heavy-duty AGV designed around the site’s physical and operational constraints.
The line received material on carrier racks but delivered it to a fixed roller conveyor. A conventional conveyor could not bridge every station without consuming valuable floor area, while a standard platform vehicle could not complete both interfaces automatically. The customer needed one mobile system that could pick up a loaded rack, travel through the workshop, align with the downstream conveyor, and transfer material under digital production control. The article describes the delivered concept and the engineering reasoning behind it. Buyers considering a comparable system can review HENSEN’s AGV solutions, but final capacity, tooling, navigation, safety, power, and controls must be configured from a new site survey rather than copied from this case.
Project at a Glance
- Application: machining production
- Transported load: machined parts and loaded carrier racks
- Vehicle/system: 25-ton roller-deck heavy-duty AGV
- Fleet: one customized vehicle described in the project source
- Navigation or control: magnetic guidance
- Movement: automated travel between rack pickup points and roller conveyor stations
- Load interface: an under-ride lifting mechanism for rack pickup plus a height-adjustable roller deck for conveyor transfer
- Recommended hensenagv.com category: Machining & Heavy Equipment
Why This Transfer Task Was Difficult
The line received material on carrier racks but delivered it to a fixed roller conveyor. A conventional conveyor could not bridge every station without consuming valuable floor area, while a standard platform vehicle could not complete both interfaces automatically. The customer needed one mobile system that could pick up a loaded rack, travel through the workshop, align with the downstream conveyor, and transfer material under digital production control.
The operating environment added another layer: a mixed-interface production line where inbound racks and outbound roller conveyors required different handoffs. A vehicle selected only by rated tonnage would not address those constraints. Route geometry, wheel loads, docking, sensor visibility, stopping distance, and the way operators or production equipment interact with the load all had to be considered together.
The transfer interface was especially important. The project used an under-ride lifting mechanism for rack pickup plus a height-adjustable roller deck for conveyor transfer. That interface determines where forces enter the vehicle, how the load is restrained, how accurately the vehicle must stop, and what must happen before movement is permitted. Treating the tooling as part of the vehicle system reduces ambiguity at each station.
The HENSEN Customized Solution
HENSEN combined two handling modes on one 25-ton platform. The AGV entered beneath a rack and lifted it for transport; at the delivery point, its powered roller deck rose to the conveyor elevation for automatic transfer. A weighing system and overload alarm monitored the carried load, magnetic guidance supported repeatable station travel, and the MES interface made transport status and material information visible to production management.
The selected movement concept was automated travel between rack pickup points and roller conveyor stations. HENSEN matched that motion to the available route rather than assuming that one steering or rail arrangement would suit every site. The project used magnetic guidance for route or station control, while AGV dispatching connected with the customer’s MES for material-data exchange connected vehicle movement with the production process.
Power was addressed through a battery power system configured around the required duty cycle. Power selection is part of throughput engineering: the energy source, charging or supply method, auxiliary lifting demand, travel distance, idle time, and maintenance plan determine whether the vehicle can support the required shifts.
Load Handling and Mechanical Interface
For machined parts and loaded carrier racks, the support points and center of gravity are as important as total weight. The delivered concept used an under-ride lifting mechanism for rack pickup plus a height-adjustable roller deck for conveyor transfer. Engineers must confirm the maximum and minimum load, tare weight of racks or fixtures, load overhang, center-of-gravity range, local contact pressure, allowable deflection, and restraint method before releasing a final frame design.
Dynamic conditions also matter. Acceleration, braking, curves, side travel, lifting, rotation, or transfer across a rail joint can shift forces compared with a static load. Structural analysis, wheel-load calculation, and a defined acceptance test help verify that the vehicle, tooling, floor, and load behave as one mechanical system.
Navigation, Mobility, and Docking
This project used magnetic guidance and automated travel between rack pickup points and roller conveyor stations. The choice followed the route and process interface. Navigation should be evaluated against stable environmental references, road condition, floor markings, outdoor exposure, turning space, station tolerance, and the consequences of a missed dock.
Route navigation and final positioning are not always the same requirement. A vehicle may travel accurately through the workshop yet still need a secondary fine-positioning method at a roller conveyor, lifting rack, turntable, or production fixture. Acceptance criteria should therefore separate path following, stopping position, alignment, and repeatability.
How the Transfer Workflow Operates
- The production system or operator confirms that machined parts and loaded carrier racks is ready for transfer.
- The vehicle receives a task and checks the required route.
- The 25-ton roller-deck heavy-duty AGV travels to the pickup point using magnetic guidance.
- The vehicle engages the load through an under-ride lifting mechanism for rack pickup plus a height-adjustable roller deck for conveyor transfer and confirms the transfer condition.
- It moves using automated travel between rack pickup points and roller conveyor stations, while configured safety devices monitor the operating zone.
- At the destination, the system completes final positioning and exchanges the required station signals.
- The load is released or transferred, completion is confirmed, and the vehicle becomes available for the next task, charging, or inspection.
The exact task handshake, permissive signals, timeout behavior, blocked-route response, and recovery sequence must be defined in the controls specification. These details decide whether an automatic vehicle remains useful when production conditions depart from the normal cycle.
Engineering Decisions Behind Reliable Operation
Route, Floor, and Rail Conditions
The site context was a mixed-interface production line where inbound racks and outbound roller conveyors required different handoffs. A survey should record aisle width, swept path, door openings, intersections, slopes, floor joints, drainage channels, embedded rails, curves, turntables, pedestrian areas, and temporary obstructions. Heavy wheel loads also require confirmation of floor or rail structural capacity.
For trackless vehicles, floor flatness and tire contact influence steering, vibration, and stopping. For RGVs, rail gauge, level, alignment, curve geometry, foundation, and transfer joints influence wheel loading and docking. These civil interfaces should be reviewed early because correcting them after vehicle delivery can disrupt commissioning.
Safety and Environmental Protection
A heavy-duty transfer system needs a risk-based safety concept rather than a single obstacle sensor. Typical layers can include scanners or radar, safety edges, emergency stops, audible and visual warnings, controlled speed zones, safe stopping distances, station interlocks, load-present confirmation, and access control. The final selection depends on the site risk assessment.
Environmental design must reflect a mixed-interface production line where inbound racks and outbound roller conveyors required different handoffs. Heat, moisture, dust, metal debris, paint vapor, sunlight, rain, or moving structures can affect sensors, brakes, electrical enclosures, batteries, cables, and communications. Public case information describes the project approach, but the final protection level must be documented in the delivered specification.
Power, Dispatching, and System Integration
The project power concept was a battery power system configured around the required duty cycle. For a new system, engineers should calculate duty cycle from loaded and unloaded travel, speed profile, lift or roller use, shift length, idle time, charging opportunity, and reserve capacity. Claims of continuous operation are only meaningful when the supply and maintenance strategy are included.
The project also used AGV dispatching connected with the customer’s MES for material-data exchange. Integration should define task ownership, vehicle status, station readiness, traffic control, production identifiers, alarms, manual overrides, user roles, and data retention. Simulation or cycle analysis can test route conflicts and capacity before on-site commissioning.
Project Outcome and Evidence Boundary
The project record confirms the dual-interface arrangement, weighing and overload alarm, magnetic guidance, and MES connection. It describes improved flexibility and reduced conveyor footprint, but it does not provide an audited cycle-time or ROI figure, so this article does not assign one.
The practical value is the alignment between the transport problem and the engineering response. The vehicle capacity, motion, interface, positioning, environmental protection, and production controls were selected as a connected solution. That system fit is stronger evidence for a buyer than an isolated payload number or a broad marketing claim.
A new project should establish a baseline before estimating improvement. Useful baseline measures include current cycle time, crane or forklift waiting, labor steps, route availability, near-miss exposure, load damage, energy use, and unplanned stoppage. The proposed system can then be evaluated against agreed acceptance measures without assuming that another site’s result will repeat automatically.
When a Similar Solution Makes Sense
A comparable AGV solution may be appropriate when machined parts and loaded carrier racks moves repeatedly between defined operating points and the existing method creates waiting, difficult handoffs, restricted access, or unnecessary exposure. It is especially relevant when the load can use a repeatable support or tooling interface and the route can be controlled for automated or assisted travel.
The same concept may be unsuitable when loads have unknown support conditions, the route cannot be kept clear, floor or rail capacity is inadequate, station positions change without control, or manual intervention remains necessary at every step. In those cases, the process may need redesign, a hybrid manual-automatic approach, or comparison with another vehicle family.
Site Survey Checklist
- Maximum, minimum, and typical load weight
- Load dimensions, support points, center of gravity, overhang, and restraint
- Pickup, delivery, parking, maintenance, and charging or power-supply locations
- Trips per shift, peak takt, loading time, unloading time, and recovery allowance
- Aisle width, turning or curve geometry, doorways, intersections, and shared traffic
- Floor or rail strength, flatness, joints, slopes, contamination, and drainage
- Heat, humidity, dust, water, paint vapor, metal debris, or outdoor exposure
- Navigation references, final docking tolerance, and station handshakes
- Pedestrian controls, stopping distance, alarms, emergency access, and restricted zones
- Wireless coverage, PLC or MES/WMS interface, task source, and data requirements
- Power method, duty cycle, charging windows, and planned maintenance
- Acceptance criteria for load, motion, positioning, safety response, and availability
Implementation and Acceptance Planning
A strong implementation plan starts with a frozen route and interface definition. Layout drawings should show the vehicle envelope and the load envelope, not only the centerline. Mechanical drawings should define supports, fixtures, lift points, roller elevations, rail interfaces, or turntable geometry. Controls documents should identify every signal exchanged with production equipment.
Factory acceptance should test the configured vehicle functions with a representative load whenever practical. Site acceptance should then verify the real route, stations, communications, safety zones, manual recovery, and production handshakes. Operators and maintenance teams need training for normal operation, alarms, emergency response, inspection, and safe recovery after a stopped task.
Performance review should distinguish transport capacity from production capacity. A vehicle may complete its cycle on time while waiting for a station, door, crane, or operator. Logging task time, travel time, blocked time, charging time, and fault recovery helps the plant identify the real constraint and improve the process after commissioning.
Frequently Asked Questions
What was transported in this machining production project?
The project handled machined parts and loaded carrier racks using 25-ton roller-deck heavy-duty AGV. The load interface was an under-ride lifting mechanism for rack pickup plus a height-adjustable roller deck for conveyor transfer.
Why was a AGV selected?
The vehicle family matched the route and process: automated travel between rack pickup points and roller conveyor stations. Final selection also considered load geometry, station interface, environmental risk, and integration rather than payload alone.
How was the vehicle guided or positioned?
The delivered approach used magnetic guidance. Any numerical tolerance mentioned in this article is specific to the supplied project record and should be revalidated for a new site.
Can the design be reused in another factory?
The engineering logic can be reused, but the dimensions and specification should not be copied without a site survey. Load, route, floor or rail, docking, safety, power, and production controls change from plant to plant.
What information is needed for a quotation?
Provide load weight and dimensions, drawings or photos of supports, a route layout, station details, required trips or takt, floor or rail information, environmental conditions, power preference, safety rules, and system-integration requirements.
How should project performance be verified?
Agree on measurable factory and site acceptance criteria. Typical items include rated-load travel, stopping and docking, lifting or transfer function, safety response, cycle time, communication, manual recovery, charging or power behavior, and fault handling.
Conclusion
This case demonstrates how HENSEN approached machined parts and loaded carrier racks as a complete machining production logistics problem. The delivered concept combined a 25-ton roller-deck heavy-duty AGV with magnetic guidance, an under-ride lifting mechanism for rack pickup plus a height-adjustable roller deck for conveyor transfer, and the production connection required for the site.
For additional examples, review the HENSEN Case Studies. A useful engineering discussion begins with the load drawing, route layout, station interfaces, production rhythm, and operating risks. Those facts define the solution boundary and allow a heavy-duty transfer system to be evaluated on evidence rather than assumption.
