Machining POM-C (Acetal / Delrin): Speeds & Feeds, Tooling & Best Practices
Technical machining guide for POM-C (Acetal / Delrin) (Polyoxymethylene Engineering Plastic): optimal cutting speeds (150 - 400 m/min), feeds (0.10 - 0.25 mm/tooth), hardness (82 Shore D), and precision manufacturing practices.
Engineering Specifications & Parameters
| Chip Load (fz) | 0.10 - 0.25 mm/tooth |
| Material Grade | POM-C (Acetal / Delrin) |
| Material Hardness | 82 Shore D |
| Cutting Speed (Vc) | 150 - 400 m/min |
| Alloy Classification | Polyoxymethylene Engineering Plastic |
| Primary Applications | Precision gear wheels, fuel system float components, sliding... |
Material Properties & Machinability Profile
POM-C (Acetal / Delrin) is classified as a Polyoxymethylene Engineering Plastic widely specified for mission-critical components requiring Precision gear wheels, fuel system float components, sliding bushings, and food packaging valve manifolds..
Engineering Kinematics & Cutting Parameters
- Material Hardness: 82 Shore D.
- Recommended Cutting Speed ($V_c$): 150 - 400 m/min with dedicated substrate coatings.
- Chip Load ($f_z$): Maintained between 0.10 - 0.25 mm/tooth to prevent tool rubbing or excessive mechanical shock.
- Machinability Challenge: Excellent dimensional stability and low friction, but prone to internal residual stress bowing; requires rough-and-finish resting.
- Tooling Strategy: Employs high-pressure flood coolant (>= 30 bar) and micro-grain carbide or specialized inserts with positive rake geometries.
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Frequently Asked Questions
What cutting speed is recommended for POM-C (Acetal / Delrin)?
Optimal cutting speeds range from 150 - 400 m/min depending on roughing vs finishing passes and machine tool rigidity.
How does UCAN ROBOT manage tool wear when cutting POM-C (Acetal / Delrin)?
We implement in-process tool monitoring, rigid toolholder systems, and high-pressure through-spindle coolant to dissipate cutting heat immediately.
