Production

From blank to finished instrument

1. Production of blanks

During the manufacture of primary parts the basic material (forged part) is given the appropriate form for further processing. ZWILLING J.A. HENCKELS processes steel bars made of
ice-hardened stainless high-grade FRIODUR® steel as well as
ordinary steel in the production of cuticle and nail nippers.

The most important manufacturing steps are:

1. Cutting to shape:
   Slugs cut from a long flat steel bar provide the basic materials for the forging of the nipper blade.
   
   
2. Heating:
   The slugs are heated to 1000 - 1100°C.
   
   
3. Forging:
   In the die-block the slugs are given their first rough
   nippers shape (box blade or lap blade).
   
   
4. The first blank is cut out:
   The blank is deburred on an eccentric power press (punched out).
   
   
5. Forging residue is removed by sand blasting.
   
   
6. The upper and lower blades are shaped on a press.

2. Machining from the blank

The following manufacturing steps are carried out during
production:

1. Precise milling of the closing surfaces.
   
   
2. The milling out of the “box”, i.e. the clearance through which the second nipper half is inserted.
   
   
3. Boring of the screw hole; cutting of the thread; hobbing the bearing for the screw head.
   
   
4. Boring and thread cutting for the spring bolt.