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Turning tools \ Technical introduction - knurling

Procedures and process parameters, knurl forming
Key steps

1. Tool setting - tip height
2. Clearance angle: max. 1° (only in the case of axial machining and wide projection lengths)
3. Infeed depth = pitch (for example 1 mm pitch requires 1 mm infeed in Ø)
4. Repeated insertion into profile possible
5. Knurling depth only sufficiently deep to produce sharp knurl z
6. After a dwell time of 3-10 rotations, the workpiece is knurled under longitudinal feed
7. If the dwell time is too long, flaking may occur
8. Compliance with X-zero position for tangential tools ~ ~ 88°- 89°

Reference values for process parameters

Material * Workpiece diameter Speed n Radial feed f Axial feed f Infeed depth
*
(mm) (rpm) * (mm/r) * (mm/r) * (mm)
Up to a maximum of RM = 1000 10 650 0.08-0.1 0.08-0.1 p = Ø
N/mm 2
Up to a maximum of RM = 1000 50 160 0.08-0.1 0.08-0.1 p = Ø
N/mm 2
Up to a maximum of RM = 1000 100 100 0.08-0.1 0.08-0.1 p = Ø
N/mm 2
Note: The specified values (initial values) are recommendations and must be optimized in the application.
* The professional quality as well as the wear of the knurling wheels depend on:
- The combination of workpiece diameter and speed
- The feed
- The material
- The application (e.g. clamping situation - one- or two-sided)

Source: Hahn+Kolb Werkzeuge GmbH
Technical data subject to change. www.iconridge.com
Availability subject to country specific rules and regulations. 325

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