Thread Rolling
Habegger SA
Through our partner Habegger SA, Alouette offers Adjustable Thread Rolling Dies, Knurling Dies, and Burnishing Dies with their respective holders for both CNC & Cam machines. We also offer Habegger Guide Bushing and Guide Bushing repair kits.
Thread Rolling Dies
Thread diameters from 0.30 to 14.00 mm
UN Series from 000-120 to 9/16”-32
Pitch from 0.08 to 1.25 mm 120 TPI to 20 TPI
Dies are available in LH for most all sizes
Non-adjustable dies also available for large batch jobs
Advantages of thread rolling:
- Better thread quality
- High machining regularity
- Increased thread resistance
- Reduced breaking points
- Better surface values on the thread flanks and on the thread root
Compensating Holder
Fixed Holder
Knurling Dies
Diameter after knurling: from 0.60 to 14.20 mm
Pitch from 0.13 to 1.00 mm according to diameter
Sizing of knurling dies are available in tenths of a millimetre.
Advantages of Knurling Dies:
- No untrue workpiece after the knurling operation
- Very regular machining
- No radial effort exerted on the collet or guide bush
- Possibility to knurl diameters smaller than 1 mm
- Better knurling quality
Knurling dies are used for straight or crossed knurling (30° or 45°). They work without radial effort. No pressure is exerted on the workpiece, even with the smallest diameters. The three knurls forming the teeth assure a high quality of the job and the long life of the die.
Diameter before knurling increases by 25 to 35% of the pitch value, according to the machined material. These values are in direct relation with the material resistance.
Burnishing Dies
Diameter after burnishing: from 0.50 to 12.40 mm
The sizes of the burnishing dies are available per tenths of a millimeter
The burnishing operation improves the surface finish, but does not influence the diameter
Advantages of Knurling Dies:
- Good surface finish
- No radial effort exerted on the collet or guide bush
- Possibility to burnish diameters smaller than 1 mm.
These burnishing dies permit to smooth the diameters. They work without radial efforts and no pressure is exerted on the workpiece, even for small diameters. The three rollers will give a better surface quality, without improving the turning geometry, however. The rollers will just follow that geometry. It is therefore important to have a good tuning job done, as far as concentricity and cylindrical shape are concerned.
The peripherical speed of the workpiece must be about 20 meters/minute. The speed is smaller when the material to be smoothed is very hard. The indicative value for the feed is 0.2 to 0.5 mm/revolution.
