Terms Around the Tap

You will encounter these terms again and again in connection with taps. With the help of the sketches, you will get an understandable overview here.

general concepts

General terms

_γP/1P = rake angle

_γ2P = rake angle peel cut

_γr = Ridge angle

N = Number of grooves/bridges

_d3= Groove length

_Zb= land width

_Nb= Groove width

EXPLANATION OF SIGNS

Peel cut and relief cut

Peel cut and relief cut

_ha = cut relief to tooth width

_hr = gash relief per pitch

_I7 = Gate cut length

_γFa = Peel gate angle

EXPLANATION OF SIGNS

Groove shapes

approx. 10° left-hand helical grooves

<p>approx. 10° left-hand helical grooves</p>

approx. 15° right-hand helical grooves

<p>approx. 15° right-hand helical grooves</p>

approx. 15° right-hand helical grooves with exposed teeth

<p>approx. 15° right-hand helical grooves with exposed teeth</p>

approx. 35° and 45° right-hand helical grooves

<p>approx. 35° and 45° right-hand helical grooves</p>

Peeling grooves with lubrication groove

<p>Peeling grooves with lubrication groove</p>

Groove shapes

_Pf = twist pitch

_γF = Angle of twist

EXPLANATION OF SIGNS

Groove shapes

Internal centering

<p>Internal centering</p>

Full tip

<p>Full tip</p>

Half point

<p>Half point</p>

EXPLANATION OF SIGNS