Short answer: a metal möhürleme drawing review should confirm the part function, material, thickness, grain direction, critical dimensions, tolerances, burr direction, bend radii, flatness, finish, inspection method, packaging, annual volume, and revision level before quoting. A clear drawing package reduces guesswork, shortens DFM review, and helps the ü üpjün ediji quote tooling, samples, and production with fewer assumptions.
This page is for buyers and engineers preparing drawings for stamped brackets, clips, terminals, shields, washers, contacts, enclosures, and formed parts. The goal is not to make the drawing longer. The goal is to make the drawing useful enough that a möhürleme ü üpjün ediji can separate real functional requirements from default notes that may add cost.
If your drawing is ready for review, send the 2D file, 3D file, material, thickness, finish, quantity, and target timing through the RFQ form. For related checks, review the metal möhürleme RFQ checklist, DFM review before tooling, and quote deňeşdirme gollanmasy.
Drawing items that affect the quote
| Drawing item | Why it matters | What to clarify |
|---|---|---|
| Material and thickness | Controls forming risk, strip layout, die wear, and cost. | Grade, temper, coating, thickness tolerance, and allowed alternatives. |
| Functional dimensions | Drives inspection time and tooling control. | Mark CTQ dimensions, datums, mating features, and gauge points. |
| Burr direction | Affects assembly, safety, plating, and electrical habarlaşmak. | Show which side can carry burrs and which edge must be smooth. |
| Formed features | Bends, lances, embosses, and tabs can need stations or restrikes. | Bend radius, formed height, free angle, and acceptable springback. |
| Finish and packaging | Changes process order and protects small features. | Plating, passivation, deburring, cleaning, orientation, and packing method. |
Start with the part function
A drawing is easier to quote when the ü üpjün ediji understands what the part must do. A shield needs grounding continuity. A spring clip needs recovery after compression. A bracket needs hole location and flatness. A terminal needs habarlaşmak surface, conductivity, and plating notes. Without that context, the ü üpjün ediji may quote every note as equally important, which can raise cost or slow review.
Add a short application note when the function is not obvious. Identify surfaces that mate, slide, weld, solder, carry current, locate the assembly, or touch the customer. That context helps during tolerance review, burr control, and critical dimension planning.
Check tolerances before sending the RFQ
Many drawings use tight default block tolerances that were not written for möhürleme. A tight tolerance on every edge can force extra inspection and may imply secondary sizing where normal die control would be enough. The better approach is to mark critical locations tightly and allow practical möhürleme tolerance on non-functional edges.
Review hole-to-edge distance, slot width, bend-to-hole distance, inside radius, formed height, and flatness. If a hole is close to a bend or an edge, the ü üpjün ediji may recommend a geometry change, a different station sequence, or a fixture check. See the punched holes and slots guide, punch and die clearance guide, and flatness and warpage guide.
Make finish notes quote-ready
Finish notes should say what the surface must do. Corrosion protection, solderability, low habarlaşmak resistance, cosmetic appearance, burr removal, and cleanliness are different requirements. A simple “zinc plated” or “deburred” note may be enough for some brackets, but not for terminals, shielding parts, medical parts, or parts that habarlaşmak a PCB.
For plated contacts, define the habarlaşmak area, base material, underplate if needed, and whether exposed cut edges are acceptable. For formed parts, ask whether plating should happen before or after möhürleme. The plating and passivation RFQ guide and copper terminal plating selection guide are useful companion pages.
Drawing review RFQ checklist
- 2D drawing, 3D model, drawing revision, and part number.
- Material derejesi, thickness, temper, grain direction, and substitute materials if allowed.
- Critical-to-quality dimensions, datums, mating surfaces, and inspection method.
- Bend radii, formed heights, burr side, edge condition, and flatness requirements.
- Finish, plating stack, cleaning, masking, cosmetic surfaces, and corrosion exposure.
- Prototype quantity, annual volume, order pattern, packaging method, and target ü üpjünçilik wagty.
- Known issues from a current ü üpjün ediji, such as cracks, burrs, late delivery, or unstable dimensions.
Iberiň the package through the habarlaşmak page when you want a practical manufacturability review. If tooling is not built yet, also review the tooling cost guide and progressiw galyp design checklist.
FAQ: möhürleme drawing review
What files are best for a metal möhürleme RFQ?
Iberiň a controlled 2D drawing, a 3D model if available, material and thickness notes, finish requirements, quantity, target ü üpjünçilik wagty, and any known critical dimensions.
Should every dimension be tightly toleranced?
No. Tight tolerances should be reserved for functional features. Non-critical edges can usually use normal möhürleme tolerances to reduce tooling and inspection cost.
Why does burr direction belong on the drawing?
Burr direction can affect assembly, safety, sliding surfaces, plated contacts, and electrical performance. Marking the preferred burr side helps the ü üpjün ediji plan strip layout and inspection.
Can the ü üpjün ediji review a drawing before tooling?
Yes. A pre-tooling DFM review can catch risky holes, bends, tolerances, materials, finish notes, and packaging needs before the die design is locked.