Små sekskantede stifter kombinerer håndteringsbesværet ved en slank del med målevanskeligheden for en ikke-rund profil. En nål kan præsentere et ansigt, et hjørne eller en aftrappet ende af kameraet afhængigt af dets vinkelposition. Hvis inspektionsdatum og orientering ikke er kontrolleret, en ændring i silhuet kan forveksles med bøjning. Rettecellen skal derfor koordinere fodring, orientering, optisk screening, målt korrektion og endelig verifikation.
Til højvolumen produktion, den mest effektive arkitektur er ofte ikke at rette hver stift. En hurtig inspektionsstrøm gør det muligt for passende stifter at omgå korrektion, mens kun den målte bøjede population kommer ind i en langsommere lukket sløjfeudretningsgren.
Start med den korrekte sekskantede pin-definition
The project photo shows real slender, dark-finished pin-type workpieces with non-round bodies and different visible end lengths. It supports the workpiece family, but it is not a dimensional inspection record.
| Drawing feature | Why it matters to the cell |
|---|---|
| Across-flats dimension | Selects nest, guide and approved face-contact tooling |
| Across-corners dimension | Determines clearance and optical silhouette extremes |
| Round or reduced end diameter | May provide orientation, assembly or locating information |
| Overall and controlled length | Defines support span and optical field/scan positions |
| Face/edge straightness | Determines which profile element is evaluated |
| End-to-body relationship | Determines whether orientation and alignment must be verified |
| Materiale, hardness and surface | Sets correction and contact-mark limits |
An earlier project note called the two sizes “1.5 mm and 1.9 mm diametre." For et sekskantet legeme er dette ufuldstændigt: tegningen skal angive, om disse tal er på tværs af lejligheder, på tværs af hjørner eller diameteren af en rund ende. Den rapporterede 80 mm længde er også et projekt input, indtil tegningen er bekræftet.
Adskil højhastighedsscreeningsstrømmen fra udretningsstrømmen
Den tidligere side rapporterede 80,000 stifter, der skal screenes om tre timer, med ca 500 bøjede stifter gav otte timer til korrektion. Det er forskellige processtrømme.
| Strøm | Indberettede input | Teknisk fortolkning |
|---|---|---|
| Optisk screening og bypass | 80,000 dele / 3 h | Om 7.4 dele/s brutto; kræver parallelitet, kontinuerlig bevægelse eller flere inspektionspositioner, der skal studeres |
| Bøjet del opretning | 500 dele / 8 h | Om 62.5 dele/t, tæt på én korrigeret del i minuttet før kvoter |
| Indberettet maskinopgørelse | 2 dele/min | Unverified and dependent on correction iterations and handling |
The arithmetic is useful for architecture, not proof of achieved throughput. Availability, refill time, jams, falske afvisninger, recipe change, correction iterations and final verification must be included in a real capacity study.
Nødvendige projektinput
| Input | Nødvendige detaljer |
|---|---|
| Tegning | Revision, across-flats/across-corners sizes, end geometry, datum and tolerance |
| Material condition | Grad, hårdhed, varmebehandling, coating and acceptable contact marks |
| Part population | Straight/bent ratio by batch and the incoming bend distribution |
| Measurement characteristic | Ligehed, profil, axis location, runout or functional insertion result |
| Optical setup | Lighting, background, forstørrelse, field of view, orientations and edge algorithm |
| Part presentation | Bulk condition, oil, grater, static, tangling and mixed variants |
| End orientation | Required head/tip direction and how ambiguous parts are handled |
| Production target | Screening, rettelse, verification and reject-stream rates separately |
| Sporbarhed | Lot, opskrift, measurement result and correction record requirements |
Why Angular Orientation Changes the Measurement
A round pin can be rotated while a probe tracks a nominally constant-radius surface. A hexagonal pin presents six faces and six corners. Optical width and edge position change as the part rotates, even when its centreline is perfectly straight.
The measurement plan must define one of the following:
- index a known face to the camera and evaluate a specified pair of edges;
- capture multiple controlled orientations and reconstruct the centreline;
- use a calibrated profile model that separates the nominal hexagon from bend;
- measure a round reference section when the drawing makes it the functional datum.
ISO 1101 giver sproget til geometrisk tolerance, mens tegningen skal identificere den faktiske tolerancefunktion. Optiske systemer kan måle ligehed og profiler uden kontakt, men programmet, fastgørelse, belysnings- og kantdetekteringsevne skal stadig valideres for denne del.
Anbefalet to-stream proces
1. Adskil og fremvis en pind
En skålføder, bakke eller andet præsentationssystem adskiller en stift uden at ridse eller fastkile de slanke dele. Projektmaskinens foto viser en vibrationsskål og overførselsmekanismer; vellykket fodring på tværs af alle produktionsforhold kræver stadig en repræsentativ afløbstest.
2. Bekræft variant og slutorientering
Sensors or vision distinguish the approved part family and identify the required head/tip direction. A part that is ambiguous, overlapped or outside the image limits is rejected or re-presented; the controller does not guess.
3. Perform fast optical screening
The part is held in the validated orientation and inspected against the drawing-specific profile rule. Conforming pins proceed directly to the bypass output. Suspect pins enter the straightening branch. False-pass and false-reject rates must be established with known reference parts and a gauge correlation study.
4. Locate the pin for correction
Dedicated supports contact approved faces or body zones. The tooling prevents angular roll and leaves the correction zone accessible. Stepped or reduced ends are protected from gripping and point load unless the drawing permits contact.
5. Apply controlled point correction
The press corrects one measured bending plane using limited displacement or force. For a hexagonal section, the recipe links support face, press direction and optical orientation. If bend exists in more than one plane, the pin is indexed to another validated orientation rather than pressed from an arbitrary angle.
6. Remeasure and decide
The pin returns to the same optical datum. Another correction is allowed only within the validated limit for iterations, displacement/force and remaining bend. Accepted, retry and reject states are kept separate.
7. Transfer the accepted pin in the required direction
The cell can hand off an accepted pin to a tray, conveyor, robot or downstream insertion process. The external interface and cycle synchronization are project options; the photos do not show a collaborative robot or prove a complete assembly line.
Real Hexagonal-Pin Straightening Video
The following public video is associated with the original hexagonal-pin project page. It supports the visible small-part handling and straightening application. It does not prove the customer country, 0.03 mm resultat, 80,000-part throughput, two-part-per-minute rate or customer satisfaction.
Measurement and Handling Risks
| Risiko | Kontrollere |
|---|---|
| Face/corner silhouette mistaken for bend | Index orientation and use a validated profile/centreline algorithm |
| Contact probe deforms a small pin | Prefer suitable non-contact inspection or validate low probe force |
| Pin rolls during correction | Brug profiltilpasset anti-rotationsstøtte |
| Overflade- eller kantmarkering | Definer tilladte kontaktflader, radier, materiale- og trykgrænser |
| Blandet tyk/tynd-ende retning | Tilføj positiv orienteringsdetektion og afvis tvetydige billeder |
| Skålføder sammenfiltring eller dobbelt foder | Test den reelle batchtilstand og detekter overlapning ved overførsel |
| Overkorrektion | Begræns hver korrektion og genmål før en ny iteration |
| Lige pin sendt til den langsomme løkke | Valider optisk beslutningstærskel og gauge-korrelation |
Definer 0.03 mm Krav, før du citerer det
Den tidligere side præsenteret 0.03 mm som opnået nøjagtighed, men navngav ikke karakteristikken eller måleopsætningen. Det kunne henvise til en profilkant, en afledt midterlinje, radial variation, maksimalt mellemrum eller et funktionelt indføringsresultat. Disse er ikke udskiftelige.
Før en garanti, definere:
- the toleranced feature and controlled length;
- datum and angular orientation;
- whether the value is straightness, profil, runout or another characteristic;
- optical calibration, resolution and edge rule;
- machine-to-customer-gauge correlation;
- repeatability/reproducibility and process-capability method;
- treatment of burrs, surface texture and tapered/rounded ends.
Prøveprøve og acceptplan
| Test group | Evidence required |
|---|---|
| Reference straight parts | Optical pass decision and customer-gauge agreement |
| Known bent parts | Detection across bend directions and magnitudes |
| Size variants | Correct nest, opskrift, optical scale and orientation |
| Surface/batch variants | Stable lighting, feeding and contact condition |
| Boundary parts | False-pass/false-reject behaviour near the decision limit |
| Corrected parts | Before/after geometry, correction history and condition inspection |
| Extended run | Availability, jams, refill, decision distribution and actual throughput |
The run-off must include both streams. A cell can meet the correction rate yet fail the overall target because the feeder, optical decision or bypass transfer is unstable.
Hvad er ikke et universelt løfte
Without the drawing, representative samples and acceptance study, denne løsning lover ikke:
- 0.03 mm for an undefined characteristic;
- 80,000 screened parts in three hours;
- 500 bent parts corrected in eight hours or two parts per minute;
- automatic recognition of every thick/thin-end variant;
- one machine covering all 1.5/1.9 mm descriptions without defining the hexagonal size;
- zero scratches, zero jams or zero false decisions;
- a collaborative robot or downstream insertion system as standard;
- a Dutch or automotive customer result without authorized records.
Related Applications
See our Fastener and Tool Straightening Solutions og Ejector Pin Straightening Solution for adjacent small-pin applications. The hexagonal pin requires its own angular-indexing and optical-decision model.
Oplysninger, der skal sendes til et forslag
Send tegning og revision, representative straight/bent samples, across-flats and across-corners dimensions, overall and end geometry, material/hardness/surface, indgående bøjningsfordeling, geometric characteristic and datum, customer gauge, required end direction, bulk presentation condition, screening/correction rates, downstream interface and traceability needs.
Kontakt StraighteningTech for a sample-based hexagonal pin straightening study. We will define the two-stream architecture, optical datum, orientation method, correction tooling, automation scope and acceptance evidence for the actual pin family.
Ofte stillede spørgsmål
Is 1.5 mm the diameter of a hexagonal pin?
Not necessarily. A hexagonal section should normally be identified by across-flats and/or across-corners dimensions. A separate round or reduced end may also have a diameter. The drawing must remove this ambiguity.
Why not straighten every pin?
If most parts are already straight, optical screening can send them directly to output and reserve the slower measured correction cycle for the bent minority. This reduces unnecessary contact and avoids sizing the straightening branch for the full screening flow.
Can one camera view prove the pin is straight in every direction?
Not automatically. One view evaluates a projected profile. The process may need a controlled second orientation, a model-based centreline calculation or correlation to another gauge, depending on the drawing requirement.
Can a vibration bowl orient the thick and thin ends?
Potentielt, with mechanical selection, sensing or vision. The actual result depends on end contrast, friction, oil, grater, tangling and part variation, so it must be proven in an extended run with production-equivalent parts.
What evidence is needed before guaranteeing 0.03 mm?
The defined characteristic and datum, validated optical program, calibrated reference parts, before/after sample records, customer-gauge correlation, repeatability data and an agreed capability study.
Teknisk referencegrænse
- ISO 1101:2017: https://www.iso.org/standard/66777.html
- ISO/TC 213 GPS scope: https://committee.iso.org/home/tc213
- KEYENCE Optical Comparator: https://www.keyence.com/products/measure-sys/image-measure/
- KEYENCE Optical CMM: https://www.keyence.com/products/measure-sys/image-measure/resources/image-measure-resources/optical-cmms.jsp
- MAE Workpieces and Applications: https://mae-group.com/da/workpieces-applications/
- MAE Automatic Straightening Machines: https://mae-group.com/en/automatic-straightening-machines/
These references support geometrical-specification, non-contact measurement and profiled-workpiece straightening principles. They do not prove that another supplier’s performance applies to a StraighteningTech configuration.