Tool Selection

Drilling:


Formdrill can withstand extreme operating conditions. From soft metals such as brass, copper, aluminium also hard structural steels up to high-grade steel or high-strength special alloys. They have high tool life and repetition accuracy and are made of special carbide. State of the art grinding technology ensures our tools are manufactured to the highest precision.

"Standard" Formdrills are available between 2.0 mm and 25.4 mm tool diameter with graduations of 0.1 mm. "Special" Formdrill tools can be produced according to the customer’s need. Our technical team can assist with all testing and analysis needed.

 

Standard Formdrill types

 

Tool style Short Short/Flat Long Long/Flat
Description Short parallel sides behind the leading taper. This produces a short conical (tapered) bush and a rolled collar on top of the working surface. Short parallel sides behind the leading taper. Milling cutters are incorporated into the collar. This produces a short conical (tapered) bush and a flat surface on top of the working surface. Longer parallel-sided body that extends behind the leading taper. This produces a long cylindrical bush and a rolled collar on top of the working surface Longer parallel-sided body that extends behind the leading taper. Milling cutters are incorporated into the collar. This produces a long cylindrical bush and a flat surface on top of the working surface  
Hole Form Tool selection

 

Tool selection

 

Tool selection

 

Tool selection

 

Picture Tool selection

 

Tool selection

 

Tool selection

 

Tool selection

 

Recommended Use Roll formed threading
Round pipes Square tubes
Sheet metal
 
Roll formed threading
Round pipes Square tubes
Sheet metal
 
Roll formed threading in thick materials
Round pipes Square tubes
Sheet metal
Roll formed threading in thick materials
Square tubes
Sheet metal


Tapping:


Formtap is a special tool for the chip free production of threads inside a hole. The non-cutting cold working process has a extreme compacting effect on the material and does not break the so called fiber direction of the material. In contrast to "cutting" the threads by roll forming the material is not cut out. Instead due to the special geometry of the tool, the material is pushed into the area of the thread flank, the material is consolidated in such a manner that the developing thread can withstand extreme static and dynamic loads.

This procedure is particularly suitable with Thermal Drilled holes to the production of threaded connections. The result is that the structure of the thin-walled socket is very strongly consolidated, whereby a high firmness of the thread is ensured.

 

Thread Former Types and Sizes

Type Metric Metric-Fine BSP UNC UNF NPT
Range M2 to M20 All sizes and pitches 1/8" to 1" N°5 to 3/4" N°5 to 3/4" 1/8" to 1"