Engineering RFQ Guide · Requirement Definition
This guide provides a recommended framework for defining project-specific requirements before machine selection or sample testing. It is not a universal acceptance standard, contract specification or drawing standard.
Direct answer: A clear deburring RFQ should define the incoming condition, what must change, what must remain unchanged, the required burr and edge result, any surface-finish requirement, protected areas, the reference or buyer-agreed acceptance basis, representative parts and any items that are still unknown.
QintelliM's engineering review framework recommends defining the incoming condition, required change, protected areas, reference basis and unknown items before machine selection or sample testing.
If a radius, roughness, tolerance, inspection method or other value has not yet been defined by the buyer, record it as an item to be confirmed through engineering review or representative sample testing rather than asking the supplier to assume a number.
“Remove all burrs” describes an intention, but does not identify the features to be processed or how the result will be judged. A supplier still needs to know where the burrs are, what condition the parts arrive in, which defects are in scope and which areas must remain unchanged. State separately whether an edge needs additional rounding and whether the visible surface should change.
A useful requirement connects a named part or feature, an incoming condition, a required result and a reference or acceptance basis. This makes the request reviewable without assuming a machine configuration or an unprovided numerical limit.
Describe the part the proposed process will receive. Include the material and grade if known, the cutting or preceding manufacturing process if known, and a drawing or clear part photograph. Mark burr locations, relevant slag or oxide, scratches and the current visible surface condition.
Identify holes, slots, internal features, appearance-critical faces and any known protective film or coating. Show the relevant sides of the part. If a detail is unavailable, leave that field blank or label it unknown; appearance alone should not be used to guess the grade, condition or specification.
List only the results the application actually requires. Ask which burr must be removed, which edge must be rounded and which visible surface should be changed. State whether brushing or polishing is required, and whether oxide or attached slag removal is part of the requested result.
For example, a buyer may request burr removal at marked openings while asking to preserve the existing face appearance. This is an illustrative requirement, not a customer case. Do not automatically add edge rounding, brushing, polishing or complete-face processing to a request for burr removal.
The RFQ should identify both the processing scope and the no-change scope. Identify finished or protected surfaces, coatings or film, threads, critical dimensions, local features, cosmetic faces and areas outside the required processing zone.
Explain what must be preserved and where it applies. The supplier must review whether the proposed process can respect these boundaries; listing a protected feature does not establish that a particular machine can protect it without verification.
Specify the edges or locations where unwanted burr must be removed. If loose or raised burr must no longer remain at those locations, state that requirement and the buyer-agreed basis for checking it: visual review, an agreed tactile reference or a buyer-defined measurement basis where applicable.
If the buyer uses the term “burr-free,” clarify the locations, inspection basis and allowed condition. This guide does not assign a universal meaning to “zero burr” or promise a burr-free result. It does not supply a standard residual burr height or removal amount.
“No sharp edge” does not mean any particular numerical radius. “Feels smooth” does not establish dimensional radius acceptance. For the detailed relationship between edge requirements and verification, use the Edge Radius Verification Guide.
No intentional surface change is a valid result to define. It means the request does not include an intentional whole-face appearance change; the acceptable condition after processing still needs to be agreed. A customer asking only for burr removal should not be assumed to need full-surface brushing or polishing.
Where a surface change is required, identify it separately: scratch removal if requested, brushing, polishing or another buyer-defined appearance target. Record incoming scratches without assuming that every scratch must or can be removed. Deburring does not automatically mean surface finishing, and an additional W station is not selected by this guide.
For stainless-steel brushing direction, appearance references and material-specific review, see How to Get a Consistent Brushed Finish on Stainless Steel.
Use a drawing, marked photograph or annotated image to distinguish areas that may be processed, areas that must not be processed, appearance-critical faces, functional surfaces and protected features. Make the marks clear enough that both parties can identify the same locations and sides.
Link each protected area to the condition that must remain unchanged and any buyer-provided reference. For aluminum-specific burr, edge, surface and protection questions, read the Aluminum Sheet Deburring and Surface Finishing Guide.
Identify the reference used for each requirement and its purpose. The basis may be a drawing, an approved physical sample, a reference part, a photograph, a buyer-defined measurement method or a buyer-provided standard. State which feature and result each reference describes; if references disagree or leave a question open, ask for clarification before treating the requirement as agreed.
A physical sample can provide a direct appearance or tactile reference when the parties agree its role. Identify the sample and which characteristics it represents; do not assume that every characteristic is an approved requirement.
Photographs can help explain location, geometry and visible condition, but lighting, viewing angle, camera settings and the display can change their appearance. A photo is not automatically a precise dimensional or roughness standard.
If the buyer's drawing already specifies a radius, tolerance, surface requirement or protected area, include that information as project input. Identify the relevant drawing and revision. This guide does not add drawing symbols, tolerances or an ISO drawing requirement. Buyer-provided standards need their applicable scope clarified for the project.
Associate the requirements with representative workpieces: a normal production part, a difficult part, the relevant worst-case geometry, a smallest or hardest-to-hold relevant part, an appearance-critical part and a protected-surface part where applicable. Not every project needs a separate sample for every category; the set should reflect the actual range under review.
Identify which requirement or uncertainty each part is intended to represent. Use the Sample Testing Guide for preparation and verification of the proposed process.
If visual, edge or part-to-part variation matters, provide the buyer's acceptance boundary or agreed reference conditions. A phrase such as “consistent finish” still needs context: which faces, which comparison and what variation the buyer permits.
If an allowed variation is important but has not yet been defined, record it as an open item for sample review. QintelliM should not invent an acceptable range, appearance score or numerical tolerance on the buyer's behalf.
What the buyer has already defined: the available part information, marked processing and protected areas, stated results and identified references. Keep the source of each requirement clear.
What still requires drawing clarification, engineering review, representative sample testing or buyer confirmation and approval. Label each open item rather than filling it with an assumed specification.
Unknown is better than an invented specification. An open-item list supports review; it is not an automatic QintelliM approval process.
This is a recommended requirement-definition framework, not a universal QintelliM acceptance standard or contract specification. Complete only what is known for the project and mark the remaining items for confirmation.
| Requirement | What the Buyer Should Define |
|---|---|
| Incoming condition | Burr, slag, oxide, scratch or current surface condition. |
| Processing area | Which edges, surfaces or features should be processed. |
| Burr result | What unwanted burr must be removed and where. |
| Edge result | Burr removal only, edge break, rounded edge or a specified radius if actually required. |
| Surface result | No intentional surface change, brushing, polishing or another buyer-defined target. |
| Protected areas | Features or surfaces that must remain unchanged. |
| Reference | Drawing, approved sample, photo or buyer-defined measurement basis, with its purpose and scope. |
| Representative parts | Normal and difficult parts used for review. |
| Allowed variation | Buyer-defined boundary, if available. |
| Unknown items | Items to confirm through sample testing, engineering review or buyer clarification. |
Requirement definition: state what the buyer needs and how the result will be judged. Sample testing: verify whether the proposed process can meet the agreed requirement. A successful-looking demonstration does not replace agreed requirements or establish acceptance for a different workpiece.
The Sample Testing Guide owns the testing questions. This page prepares the inputs; it does not prescribe a test procedure.
This guide collects the edge target, relevant locations and the buyer's requirement. The Rotary Roller Brush and Edge Radius Verification Guide covers the deeper measurement, radius verification, first-off and FAT considerations. Those methods are not replaced by a general RFQ description.
Requirements are defined before the quotation and process approval. After a process is approved, production records, consumable changes and first-piece continuity help preserve its basis. See Manual Grinding to a Repeatable Deburring Process for that later-stage responsibility.
Define requirements → Select process / machine → Sample test → Confirm. Use the Machine Selection Guide after the required results and open items have been identified. Requirements may need clarification during review; do not convert an unresolved item into an assumed machine capability.
This page does not preselect R, RS, RW, RSW, A, M or A-M. Configuration and holding choices belong to the workpiece and process review.
This guide does not set universal burr height, edge radius, Ra, tolerance, sampling frequency, AQL, inspection instrument, drawing standard, ISO requirement, acceptance percentage, contractual acceptance criteria or customer-specific limits. Buyer-provided requirements remain project inputs to be reviewed and confirmed, not default values for other customers.
No public, anonymized and traceable customer RFQ, drawing and approved acceptance record is presented as a dedicated case for this guide. It is an engineering method guide, not a customer case, performance test, quality manual, FAT guide or contractual standard. Illustrative wording does not describe an actual customer's result.
Send the material and grade if known, drawing, cutting process if known, incoming-condition photographs and burr locations. Include the required burr and edge result, surface requirement or no-intentional-surface-change requirement, protected areas, reference sample or photo, representative parts, buyer-defined tolerance if available, unknown items and the acceptance basis if already defined.
QintelliM can review these inputs with you before a process or machine is selected. The request opens an engineering discussion; it does not automatically approve a specification or confirm that a machine will meet it.
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