A WMS+WCS stereo warehouse solution for flexible sheet-metal lines: automatic scheduling of laser cutting / CNC punching / robots / bending stations, recipe-based automatic in/out, stacker cranes and robot coordination — with auto-computed outbound coordinates and work-in-process coding as core technologies.
Flexible Sheet-Metal Lines: From Changeover Struggles to Automatic Flow
Typical sheet-metal processing: an order passes through laser cutting, CNC punching and bending — different machines, different processes. In the traditional mode:
- Long changeovers: every order swaps material and programs between cutting, punching and bending; machines wait idle for material
- Manual material flow: work-in-process (WIP) moves between stations by hand — lost, misplaced, dented or deformed
- Inventory on ledgers: raw material, WIP and finished goods scattered; book vs physical mismatch; scheduling is afraid to plan full
- Limited flexibility: small-batch, multi-variety orders are costly to switch — hard to accept
The core of solving this is stereo warehouse + automatic scheduling tying the whole flow together — that is the value of WMS+WCS.
Solution: WMS+WCS Stereo Warehouse with Stacker Cranes
This solution builds a complete warehouse-scheduling system for the flexible sheet-metal line:
Laser cutting ←→ CNC punching ←→ Robots ←→ Bending
↑ ↑ ↑ ↑
└────────┴── WMS+WCS scheduling ──┴────────┐
Stereo warehouse (stacker crane auto storage) │
Raw / WIP / finished unified in the warehouse │
Recipe auto in/out + coordinate calc + WIP coding ─┘Station scheduling: laser cutting, CNC punching, robots and bending stations coordinate automatically by takt — the previous station finishes, the warehouse auto-delivers, the next station auto-picks, linking without stopping.
Stacker cranes (not AGVs): inside the stereo warehouse, stacker cranes move along aisles to fetch and store automatically — fast, precise and space-efficient, ideal for sheet metal with many sheets and batches.
Recipe-based auto in/out: every order/product maps to a recipe (process parameters + BOM + storage strategy); the system completes in/out automatically per recipe — switching orders is just switching recipes.
Core Technology 1: Auto-Computed Outbound Coordinates for Precise Robot Picking
The most failure-prone step in a flexible sheet-metal line is the robot picking sheets from the warehouse — any deviation in shelf position, sheet pose or stacking state makes the robot miss or mis-grip: alarms, downtime, or even a crash.
The answer is auto-computed outbound coordinates:
- The system computes the sheet's actual pick coordinates (x/y/z + pose angle) in real time from shelf dimensions, sheet thickness and stacking layers
- On outbound, precise coordinates are sent to the robot — picking by 'computed coordinates', not 'blind fixed position'
- On inbound, actual storage coordinates are recorded; outbound dynamically corrects them so every pick aims at the sheet center
This capability is the technical foundation of true 'flexibility': without coordinate computation, the warehouse is just a warehouse; with it, the warehouse is part of the line.
Core Technology 2: WIP Coding, Full Traceability
From cutting to bending, sheet-metal parts pass through work-in-process (semi-finished) — the easiest to lose and mix up:
- WIP coding: each WIP gets a unique code (QR/barcode) recording its order, stations passed and current status
- Storage binding: on inbound, code binds to storage slot; on outbound, locate precisely by code — finding WIP is no longer digging through piles, but scanning to know where it is
- Full-flow traceability: from raw material → cut part → punched part → bent part → finished product, codes chain every stage; quality issues trace to a specific batch and station
Value: Small Batches, Many Varieties, Fully Automatic
| Aspect | Traditional | After WMS+WCS |
|---|---|---|
| Changeover | Hours of swap | Recipe switch, minutes |
| Material flow | Manual, error-prone | Stacker auto storage, precise |
| WIP management | Digging piles, mismatch | Code+slot binding, scan to know |
| Robot picking | Blind fixed position | Coordinate-computed, precise |
| Scheduling flexibility | Afraid of small batches | Multi-variety auto flow |
| Traceability | Can't say the batch | WIP code full chain |
Coordination with MES-LINE
In the TSingley product system, the WMS+WCS stereo warehouse is the material-scheduling partner of MES-LINE line control: MES-LINE manages execution (work orders/takt/OEE), WMS manages material (slots/inventory/in-out), WCS manages equipment (stackers/conveyors) — linked through standard interfaces: when a work order reaches a station, material is synchronized in place, achieving the unity of 'work-order flow + material flow + information flow'.
Suitable for: sheet-metal fabrication, metal plates, cabinets, appliance housings, elevator parts — plate-processing-centric manufacturers with small-batch, multi-variety production.
Many Sheets, Many Batches — Still Fully Automated Flow
Sheet-metal work relying on manual transport, ledger inventory and blind picking can never handle small-batch variety. WMS+WCS stereo warehousing + coordinate calculation + work-in-process coding lets the whole line flow automatically.
Want to evaluate which warehousing approach fits your sheet-metal line? Contact us for a solution.
