Knurling small diameters
Knurling small diametersSmaller than a match: Read on for more information on how to knurl small and delicate work pieces.
Knurling very small or thin-walled diameters often raises the question whether this job can be done without running into quality problems or even a high number of damaged goods.
Good news for all those who come across this application: With the right tool even diameters as small as 1.5 mm can be knurled up to the required quality standards.
How it works and which tool should be used for achieving best results, is explained by our Technical Advisor, using the example of a common application from the measuring and control technology.
Application Requirements:
A cylinder pin (Ø 1,5 mm) made of acid-fast, stainless steel (1.4305) requires a centered RAA profile. Due to the small diameter, the pressure exerted during the forming process should be reduced to a minimum.
Furthermore, the machine tool space is limited, a further application restriction that needs to be taken into account.
| Cylinder pin: | Ø 1,5 mm |
| Field of application: | Measuring and control technology |
| Material: | 1.4305 Acid-free stainless steel, HB230, Rm 625 |
| Machine: | Star SR10J |
Tool solution: zeus® RD2 - Product line 161
For such small work pieces, and a knurling profile on work piece center without a groove, the zeus® knurling tool series 161 is the most suitable tool choice.
The zeus® product line 161 has been developed for use in swiss type autolathes and machines with limited machine spaces.
With its special tool design - two knurl holders working in axial tool direction-a very gentle processing is possible. The lateral pressure exerted on the work piece and machine is reduced to a minimum and hence work pieces from 1 mm can be knurled with high process stability.
Result
The cylindrical pin in this application was knurled with a zeus® knurling tool No. 161-08R 100404-A1 with the required results:
Application parameters:
| Knurling tool: | 161-08R100404-A1 |
| Knurling wheel: | No. 10 AA 10x4x4, Tlg. 0,5, HSS |
| Application: | Plunge knurling |
| Speed rate: | Vc = 14m/min |
| Feed rate: | 0,02 mm/U |
| Tool life: | 5000 pcs / 750 min / Knurling wheel |
| Performance: | 0,11 m² |
