Mechanical drawing to BOM
Mechanical Drawing to BOM Generation
Read mechanical process CAD drawings, organize process cards, materials, dimensions, quantities, and machining details, and generate a reviewable BOM Excel in about 30 minutes.
Solution overview
Process engineers hand a mechanical CAD drawing to ClawX. The system locates each process card on the drawing, then consolidates drawing numbers, parts, materials, length and width, quantities, bends, and openings into one workbook.
The deliverable is not a free-form AI narrative, but a BOM Excel in the company’s familiar layout. Source drawings stay unchanged, formulas are retained, and every row can be reviewed.
- What you provide
- One mechanical process CAD drawing. There is no need to transcribe the drawing into an intermediate table first.
- What you receive
- A BOM Excel organized in the existing layout, ready for production release and process review.
- What people still do
- About 10 minutes of framing. Engineer-level staffing is not required for framing; engineers review the result.
- Why it stays controllable
- Fixed rules drive processing and formulas are preserved. Uncertain content is flagged instead of being presented as a confident guess.
Acceptance metrics
Cycle-time figures and quality counts below are observed results from a completed customer implementation run.
| Before | After | |
|---|---|---|
| Total effort | About 16 hours for engineers to read drawings, copy tables, calculate, and check. | About 30 minutes overall: roughly 10 minutes of human framing plus about 20 minutes of AI processing. |
| Quantities and weights | People apply formulas by hand; with many rows it is easy to miss a row reference or hard-code a result. | Quantity, unit-weight, and total-weight formulas are written automatically and remain recalculable in Excel. |
| Local notes | Notes such as “make 5 sets” are easy to misread across adjacent parts. | A note applies only to the small frame where it appears and does not spread across the whole drawing. |
| Staffing | Engineers operate end to end—both transcription and checking. | Framing does not require an engineer; engineers review exceptions and results only. |
| Throughput | One engineer usually processes drawings one by one in a queue. | AI can run multiple roughly 20-minute CAD-to-BOM tasks in parallel. |
Customer background and business challenge
Enterprise type
Mechanical manufacturers whose process teams convert CAD process drawings into BOM workbooks for production release and review.
Business department
Process engineering and manufacturing engineering teams responsible for process cards, materials, dimensions, set counts, and machining attributes.
Knowledge sources
Mechanical process CAD/DXF drawings, existing BOM Excel templates, quantity and weight formulas, and process-review rules.
Current pain point
Reading drawings, copying process cards, applying formulas, and checking results consume about 16 hours of engineer time; local notes can be applied to the wrong parts; ordinary holes and large openings are easy to confuse; and hard-coded results make later set-count or dimension changes expensive to recalculate.
Implementation panorama
| Before · SOP | After · SOP | |
|---|---|---|
| Total effort | About 16 hours for engineers to read drawings, copy tables, calculate, and check. | About 30 minutes: 10 minutes of framing plus about 20 minutes of AI processing. |
| Quantities and weights | People apply formulas by hand and may hard-code results. | Quantity, unit-weight, and total-weight formulas are written and remain recalculable. |
| Local notes | Notes such as “make 5 sets” can affect adjacent parts. | Notes apply only to the small frame where they appear. |
| Staffing | Engineers both transcribe and check. | Non-engineer framing; engineers review exceptions and results. |
| Throughput | Drawings are processed one by one. | Multiple roughly 20-minute CAD-to-BOM tasks can run in parallel. |
Real-world workflow
Submit the drawing
Upload existing process CAD drawings without changing the original files.
Frame for about 10 minutes
Simply mark the processing ranges; engineer-level staffing is not required.
AI processing for about 20 minutes
Automatically organize materials, dimensions, set counts, bends, and openings, with parallel multi-task execution.
Check and deliver Excel
Validate row counts, length/width values, and formulas, then output the BOM.
Implementation results and quality metrics
Observed in one customer run: 47 process-card / BOM rows, 29 drawing numbers consolidated, 141 formulas retained, and 47 / 47 length-width basic checks passed.
| Before | After | |
|---|---|---|
| Overall CAD-to-BOM time | About 16 hours of manual reading, transcription, calculation, and checking | About 30 minutes from CAD drawing to BOM |
| Human framing | Engineers spend substantial time on transcription and checking | About 10 minutes of framing; engineer-level staffing is not required |
| AI processing | Recognition, organization, calculation, and workbook creation done manually | About 20 minutes of recognition, organization, calculation, and workbook creation |
| Engineer involvement | Engineers operate the full process end to end | Framing is a simple operation; engineers reserve time for review and judgment |
| Parallel throughput | Drawings typically wait in a single-engineer queue | Multiple roughly 20-minute CAD-to-BOM tasks can run at the same time |
Before-and-after comparison
Before
Engineers spent about 16 hours reading CAD drawings, locating process cards one by one, copying values by hand, applying formulas, and checking results. Much of that time went into repetitive preparation.
After
People spend about 10 minutes framing; AI spends about 20 minutes on recognition, organization, calculation, and BOM generation. Engineers only need to review exceptions and the final result.
Delivered value
Avoid mixing adjacent process cards
Group by small frames first, then read each part’s own number, material, and dimensions.
Keep “5 sets” local
Local instructions affect only the process card where they appear—this was a key second-pass correction and acceptance focus in the implementation.
Separate holes from large openings
Ordinary round holes count as having holes, but only large quadrilaterals that meet the size rule count toward opening quantity.
Do not hard-code results
Quantity, unit weight, and total weight are written as Excel formulas so later set-count or dimension changes recalculate automatically.
Human-control boundaries
ClawX does not unconditionally replace human decisions. The following boundaries remain explicit.
Ambiguous drawings
When drawing text is blurry, formats vary widely, or meaning is unclear, escalate to human confirmation.
Non-destructive originals
Original CAD drawings are not overwritten. Generated results are saved separately for traceability and rollback.
Rule recalibration
When enterprise templates or drafting conventions change, recalibrate rules with new representative drawings.
Process release gate
Process review remains required before formal release. AI improves efficiency; it does not remove accountable owners.
Business output
The workflow produces a reviewable BOM Excel from the customer’s existing process CAD drawings, preserving quantity, unit-weight, and total-weight formulas along with the original workbook styling.
In the observed run, the finished workbook contained 47 process-card detail rows. Process owners still review exceptions and approve formal release.
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