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COLD FORMING ROLL TAPS FOR THREAD ROLLING MACHINES

 

COLD FORMING ROLL TAPS FOR NON-FERROUS ALLOYS


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Benefits of using chipless taps

Chipless taps (rolling taps, cold forming taps) are recommended to be used when producing threads by plastic deformation (rolling) in parts made of non-ferrous and ferrous metals with high plasticity. These materials include: aluminum and its alloys, copper, brass, bronze with a high copper content, zinc and its alloys, low-carbon and high-plastic stainless and heat-resistant steels. Compared to cutting taps, forming taps have greater strength, provide accurate threads with low surface roughness, and increase thread strength (up to 20%).

Their main difference from cutting taps is the absence of longitudinal grooves that form cutting edges. In addition, the champfer on these taps is significantly shorter. At the end of the threaded part of the fluteless taps, there are small symmetrically located coolant grooves.

Chipless taps are much stronger than usual taps, their breakages are very rare and there are almost no defects of parts due to taps breakdowns. Thanks to the long threaded part, the tap can be re-sharpened several times. Thus, the service life of the chipless tap is much longer than cutting tap.

High productivity in threading is the main advantage of chipless taps. They are used for thread forming not only in through holes, but also in blind holes. The thread rolling profile is formed by pressing the tool into the workpiece material and extruding part of the material into the tool cavity.


Outlook & Drawing of Cold Forming Roll Taps for Non-Ferrous Alloys

Cold Forming Roll Taps for Non-Ferrous Alloysvanadium-containing high-speed steel with Homo Processingvanadium-containing high-speed steel with Homo Processing
taps for threads smaller than M6


Cold Forming Roll Taps for Non-Ferrous Alloysvanadium-containing high-speed steel with nitride coating
taps for threads M6 and more





G - Chamfer Length: 2 threads for blind holes (B) or 4 threads for through holes (P)
H - lubricating groove

Cold Forming Roll Taps for Non-Ferrous Alloys

Metric thread
Thread Specification A
Total Length		 B
Thread Length		 C
Shank Dia.		 E
square length		 F
square		 number of facets
size tolerance size tolerance size tolerance size tolerance
M 2 40 ±0.7 12 ±1 3 0
-0.04		 5 2.5 0
-0.1		 4
   2.5 44  〞 14  〞  〞  〞  〞  〞  〞  〞
   2.6  〞  〞  〞  〞  〞  〞  〞  〞  〞  〞
M 3 46  〞 9  〞 4  〞 6 3.2  〞 4
   3.5 48  〞  〞  〞  〞  〞  〞  〞  〞  〞
   4 52  〞 10  〞 5  〞 7 4  〞  〞
   4.5 55  〞  〞  〞  〞  〞  〞  〞  〞  〞
   5 60  〞 11  〞 5.5  〞  〞 4.5  〞  〞
   5.5 60  〞  〞  〞  〞  〞  〞  〞  〞  〞
   6 62  〞 12  〞 6  〞  〞  〞  〞  〞
   7 65  〞 16  〞 6.2  〞 8 5  〞  〞
   8 70 ±1.2 18 ±1.4  〞  〞  〞  〞  〞  〞
   9 72  〞  〞  〞 7  〞  〞 5.5  〞  〞
  10 75  〞 19  〞  〞  〞  〞  〞  〞  〞
  11 80  〞 23  〞 8  〞 9 6  〞  〞
  12 82  〞  〞  〞 8.5  〞  〞 6.5  〞  〞
14 88  〞 25  〞 10.5  〞 11 8  〞 6
  15 90  〞  〞  〞  〞  〞  〞  〞   〞  〞
  16 95  〞 27  〞 12.5 0
-0.05		 13 10 0
-0.15		  〞
All table dimensions in mm.


American Thread
Thread Specification A
Total Length		 B
Thread Length		 C
Shank Dia.		 E
square length		 F
square		 number of facets
size tolerance size tolerance size tolerance size tolerance
No .2 42 ±0.7 13 ±1 3 0
-0.04		 5 2.5 0 -0.1 4
No .3 44  〞 14  〞  〞  〞  〞  〞  〞  〞
No .4  〞  〞 15  〞  〞  〞  〞  〞  〞  〞
No .5 46  〞 9  〞 4  〞 6 3.2  〞  〞
    6 48  〞  〞  〞  〞  〞  〞  〞  〞  〞
    8 52  〞 10  〞 5  〞 7 4  〞  〞
   10 60  〞 11  〞 5.5  〞  〞 4.5  〞  〞
   12  〞  〞  〞  〞  〞  〞  〞  〞  〞  〞
U 1 /  4 62  〞 14 ±14 6  〞  〞  〞  〞  〞
  5 / 16 70 ±1.2 18  〞 6.1  〞 8 5  〞  〞
  3 /  8 75  〞 21  〞 7  〞  〞 5.5  〞  〞
  7 / 16 80  〞 23  〞 8  〞 9 6  〞  〞
  1 /  2 85  〞 25  〞 9  〞 10 7  〞  〞
  9 / 16 90  〞  〞  〞 10.5  〞 11 8  〞 6
  5 /  8 95  〞 27  〞 12 0
-0.05		 12 9  〞  〞
All table dimensions in mm.


Ordering of Cold Forming Roll Taps for Non-Ferrous Alloys

Metric thread
RG NO. Thread Size TAP Limit Chamfer (G) Total Length (A) Thread Length (B) Shank Dia. (C)
1000012714 M3 X 0.5 RH5 P 46 9 4
1000012734 M4 X 0.7 RH6 P 52 10 5
1000012735 M4 X 0.7 RH6 B 52 10 5
1000012744 M5 X 0.8 RH6 P 60 11 5.5
1000012745 M5 X 0.8 RH6 B 60 11 5.5
1000012756 M6 X 1 RH7 P 62 12 6
1000012757 M6 X 1 RH7 B 62 12 6
1000128945 M8 X 1.25 RH6 P 70 18 6.2
1000128946 M8 X 1.25 RH6 B 70 18 6.2
1000012776 M8 X 1.25 RH7 P 70 18 6.2
1000012777 M8 X 1.25 RH7 B 70 18 6.2
1000012791 M8 X 1 RH7 B 70 18 6.2
1000012808 M10 X 1.5 RH7 P 75 19 7
1000012809 M10 X 1.5 RH7 B 75 19 7
1000128947 M10 X 1.25 RH6 P 75 19 7
1000128948 M10 X 1.25 RH6 B 75 19 7
1000012822 M10 X 1.25 RH7 P 75 19 7
1000012823 M10 X 1.25 RH7 B 75 19 7
1000128951 M12 X 1.75 RH7 P 82 23 8.5
1000128952 M12 X 1.75 RH7 B 82 23 8.5
1000012846 M12 X 1.75 RH8 P 82 23 8.5
1000012847 M12 X 1.75 RH8 B 82 23 8.5
1000128943 M12 X 1.75 RH9 P 82 23 8.5
1000128944 M12 X 1.75 RH9 B 82 23 8.5
1000012860 M12 X 1.5 RH7 P 82 23 8.5
1000012861 M12 X 1.5 RH7 B 82 23 8.5
1000128941 M12 X 1.5 RH8 P 82 23 8.5
1000128942 M12 X 1.5 RH8 B 82 23 8.5
1000012876 M12 X 1.25 RH7 P 82 23 8.5
1000012877 M12 X 1.25 RH7 B 82 23 8.5
1000012894 M12 X 1 RH7 P 82 23 8.5
1000012895 M12 X 1 RH7 B 82 23 8.5
1000012912 M14 X 2 RH10 P 88 25 10.5
1000012913 M14 X 2 RH10 B 88 25 10.5
1000012926 M14 X 1.5 RH9 P 88 25 10.5
1000012927 M14 X 1.5 RH9 B 88 25 10.5
1000012940 M16 X 2 RH10 P 95 27 12.5
1000012941 M16 X 2 RH10 B 95 27 12.5
1000012954 M16 X 1.5 RH9 P 95 27 12.5
1000012955 M16 X 1.5 RH9 B 95 27 12.5
1000012968 M18 X 2.5 RH11 P 100 29 14
1000012969 M18 X 2.5 RH11 B 100 29 14
1000012984 M18 X 1.5 RH10 P 100 29 14
1000012985 M18 X 1.5 RH10 B 100 29 14
1000012986 M20 X 2.5 RH11 P 105 30 15
1000012987 M20 X 2.5 RH11 B 105 30 15
1000012988 M20 X 1.5 RH10 P 105 30 15
1000012989 M20 X 1.5 RH10 B 105 30 15
All table dimensions in mm.



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