POM Acetaal (polyoxymethyleen) — De complete gids voor het CNC-bewerken van kunststoffen

| 3 minuten lezen

This pom acetal polyoxymethylene guide explains practical material, design, manufacturing, and sourcing considerations for Nylon Plastic readers.

POM-acetaal (Delrin) CNC-gefreesde tandwielen en precisieonderdelen - Nylonplastic CNC-service

POM acetal rods, gears and machined stock in a CNC plastics workshop
POM Acetaal (polyoxymethyleen) — De complete gids voor CNC-bewerking van kunststoffen

Wat is POM-acetaalkunststof?

POM acetal CNC machining line with polymer pellets and finished precision components
Professionele industriële foto: POM-acetaal (polyoxymethyleen), productie

POM (polyoxymethyleen), ook bekend als acetaal of Delrin, is een sterk kristallijn technisch thermoplastisch materiaal. Dankzij de combinatie van hoge stijfheid, lage wrijving en uitstekende maatvastheid is het bij uitstek geschikt voor precisie-mechanische onderdelen.

Belangrijkste eigenschappen van POM

  • Treksterkte: 60–70 MPa
  • Buigmodulus: 2.500–2.800 MPa
  • Smeltpunt: 165–175 °C
  • Wrijvingscoëfficiënt: 0.2–0.35

Best practices voor CNC-bewerking

Gebruik scherp hardmetalen gereedschap, een snijsnelheid van 150–250 m/min bij het draaien en luchtstroom- of overvloedige koeling.

Algemene toepassingen

Tandwielen, kettingwielen, lagers, bussen, geleiderails, apparatuur voor de voedselverwerking en onderdelen voor medische apparatuur.

POM CNC Machining: What the Shop Must Control

POM is easy to machine compared with many reinforced engineering plastics, but it still needs a controlled process. The stock should be supported evenly, the workholding should not crush thin sections, and the tool path should remove heat instead of rubbing the polymer. A part that measures correctly while clamped can move after release if the stock or fixture has stored stress.

Control point Waarom dit belangrijk is Useful RFQ evidence
Stock and grade Different POM grades can vary in stiffness, friction, color and dimensional behavior Grade, certificate, stock size and lot traceability
Werkstukopspanning Uneven clamp force can distort thin walls and bores Fixture concept, datum plan and relaxed-part inspection method
Cutting strategy Rubbing and trapped chips can raise heat and damage the surface Tool material, chip evacuation and critical surface requirement
Inspection condition Temperature and release state can change the measured result Inspection temperature, datum scheme and critical dimensions

For a production decision, compare CNC-machined POM with molded POM, unfilled PA, PA-GF20 and PA-CF30 only against the actual duty cycle. POM is often attractive for low-friction parts, while reinforced nylon may be better when stiffness, wear or temperature response dominates. A material substitution should be validated with the mating component and service environment.

Prototype-to-Production Questions

Gerelateerde lezen

Veelgestelde vragen

When is POM acetal a good choice for a CNC-machined plastic part?

POM is useful when low friction, good stiffness, wear resistance and dimensional stability are more important than high temperature or long-term moisture resistance. Confirm the load, speed and chemical environment first.

What should be checked before choosing POM for CNC machining?

Check part size, wall thickness, tolerance, surface finish, heat exposure, load direction, friction, chemical contact and whether the design will remain machined or later move to injection molding.

How should POM be held during machining?

Use even support and moderate clamping force. Excessive local pressure can distort the stock and the part can move when released, so critical dimensions should be inspected after the part has relaxed.

What affects the cost of POM CNC machining?

Cost depends on stock size, material grade, number of setups, tool access, tolerances, surface finish, inspection and quantity. Standard tools and relaxed non-critical tolerances usually reduce cost.

Can POM be replaced by nylon or PA-GF20?

Sometimes, but the replacement changes friction, moisture response, stiffness, wear and dimensional behavior. Compare the application data rather than substituting by name alone; PA-GF20 may improve stiffness but can change anisotropy and surface behavior.

Request a POM CNC Machining Review

Send the CAD file, drawing, POM grade preference, tolerances, operating environment, quantity and inspection requirements for a machining review.

Vertel ons meer over uw onderdeel

Dit veld is verplicht.
Dit veld is verplicht.
Dit veld is verplicht.
Dit veld is verplicht.
Dit veld is verplicht.

Verwante berichten

Scroll naar boven