AI auto-generation of work instructions: manufacturing documentation without the grind
A manufacturing process plan (routing / work instructions) is the foundation of production documentation. Every new product needs one. For a company introducing 50+ products per year, creating routings from scratch is an enormous burden on the engineering team.
What a routing defines and why it takes so long
A routing defines:
- Sequence of manufacturing operations
- Which machine performs each operation
- Setup parameters (RPM, feed rate, temperature, cycle time)
- Tool and material consumption norms
- Quality checkpoints and measurement methods
- Labour time norms (for cost calculation)
An experienced process engineer needs 4–8 hours to write a routing for a new product. Adding 5–10 products per month means 20–80 hours of pure documentation work.
How AI generates the routing
Analysis of similar products
For a new product, AI identifies the 3–5 most similar products in the history (same material group, similar dimensions, similar processing method).
Parameter extrapolation
AI adjusts parameters from similar routings based on the new product’s specs:
- Larger diameter → different RPM, longer operation time
- Different material → different cutting parameters, different processing temperature
Routing structure generation
MANUFACTURING PROCESS PLAN
Product: Shaft HŠ-2245 | Rev. 00 | 2026-05-03
Op. 10: Rough turning
Machine: CNC Mazak QT-250
Tool: DNMG 150608-MF (T01)
RPM: 1,200 | Feed: 0.25 mm/rev | Depth: 2.0 mm
Standard time: 8.5 min/pc
Op. 20: Finish turning
...
Op. 30: Dimensional inspection (100 % control)
Measuring instrument: Micrometer 50–75 mm
Tolerance: Ø60 h6 (-0.019/-0.011)
Engineer review and approval
The generated routing is sent to the process engineer for review. They check critical parameters and either approve or adjust.
Review and approval time: 30–60 minutes (vs. 4–8 hours writing from scratch).
Integration with the production system
After approval the routing is immediately available:
- On the CNC machine (printed sheet or digital terminal)
- In the production planning system (operation times for capacity planning)
- In cost calculation (norms for labour and material costing)