Knurling
A surface treatment process that creates a diamond-shaped pattern for improved grip. The pattern is pressed into the workpiece using hardened wheels.
Process Steps
1. Pattern Selection
Choose appropriate knurl pattern and pitch based on workpiece diameter and application.
2. Workpiece Preparation
Turn workpiece to size, accounting for material displacement during knurling.
3. Tool Setup
Mount knurling tool and align wheels parallel to workpiece axis.
4. Pattern Starting
Begin at workpiece end with light pressure, ensuring pattern starts cleanly.
5. Pattern Development
Gradually increase pressure while maintaining steady feed rate until pattern is fully formed.
Operation Difficulty
Intermediate
Safety Guidelines
- • Use appropriate pressure to avoid damaging the workpiece or tools
- • Ensure workpiece is properly supported for knurling pressure
- • Start pattern at the end of the workpiece
- • Maintain consistent feed rate throughout operation
- • Use cutting oil to prevent tool wear and improve pattern quality
Required Tooling
Knurling Tool
Straight or diamond pattern knurling wheels with appropriate pitch
Heavy-Duty Tool Holder
Rigid holder to maintain pressure during knurling operation
Cutting Oil
Specialized cutting oil for knurling operations
Digital Calipers
For measuring workpiece diameter before and after knurling