Rolling Force

Pitch P [mm]
-
Major Diameter d [mm]
dmax
-
Tolerance 6g
dmin
-
Pitch Diameter d2 [mm]
d2max
-
Tolerance 6g
d2min
-
Minor Diameter d3 [mm]
d3max
-
Tolerance 6g
d3min
-
Workpiece Rotations
Best Practise
Rm =   600 N/mm2
Rm =   800 N/mm2
Rm = 1000 N/mm2
Rm = 1200 N/mm2
-
-
-
-
Rolling Force F [kN]
Thread length = 10xP
Rm =   600 N/mm2
Rm =   800 N/mm2
Rm = 1000 N/mm2
Rm = 1200 N/mm2
-
-
-
-

Tested Setup recommendation and und Rolling Force estimation



d - Major Diameter
d2 - Pitch Diameter
d3 - Minor Diameter
P - Pitch
R - Root Radius


Ü =  Dwz · n · tw
dv · 60
 
tw =  Ü · dv · 60
Dwz · n

Ü - Workpiece rotations
Dwz - Rolling Die diameter
dv - Pre-Rolling Diameter
n - Rolling Die Speed [RPM]
tw - Rolling time


Rolling force related to thread length = 10 x Pitch

Please multiply for specific value

Blank Diameter & Pitch angle

Pitch P in mm
dv
α
0,35
-
-
0,5
-
-
0,7
-
-
0,75
-
-
0,8
-
-
1
-
-
1,25
-
-
1,5
-
-
1,75
-
-
2
-
-
2,5
-
-
3
-
-
3,5
-
-
4
-
-
4,5
-
-
5
-
-
5,5
-
-
6
-
-

Blank diameter recommendation and Pitch angle* for metric coarse and fine thread DIN 13 - 6g



α - Pitch angle
d3 - Major Diameter
df - Chamfer Diameter
df=d3min - 0,2

* Pitch angle: decimal


Chamfer angle in relation to tensile strength Rm

Rm [N/mm2] φ
< 600 30°
600 ... 800 25°
800 ... 1000 20°
> 1000 15°

Tolerance Blank diameter -0,03

The Company Profiroll Technologies GmbH



Profiroll is the global leader for a complete product range of Machine tools, Rolling Dies and Processes for coldforming of Threads, Profiles, Splines and Rings.

Within 70 years of company history Profiroll made history because of inventions in the field of Rolling with Circular Dies.

As a reliable partner Profiroll Technologies wants to provide basic information on Rolling of Standard Threads for all interested visitors. Therefore we present our Rolling force calculator true to motto:

Machine, Dies, Process from one source.

Additional information about Profiroll Technologies GmbH can be found on our Website www.profiroll.de

About us

Declaration acc. to §6 Teledienstegesetz

Profiroll Technologies GmbH
PEE-WEE-Str. 1
D-04849 Bad Düben

Phone: +49 34243 74-0
Fax: +49 34243 22159
E-mail: profiroll@profiroll.de

CEO: Dr. Stephan Kohlsmann, Werner Ende
Ust-Ident.-Nr.: DE 141732934
Commercial register: Amtsgericht Leipzig, HRB 149

Version 05/2016 • All details without guarantee
© Profiroll Technologies GmbH