Общий каталог Yamawa 2022 - 2023 - страница 1231

23. Selecting different tap holder combinations by machine feed system


Description of products
Holders aspects Characteristics of tap self-guiding behavior
r=tap’s radius, s=thread relief, t=margin width

Eccentric thread relief
(no width of margin)

Compression Tension

Spring direction


Completely rigid holder type
Tap characteristics ; high cutting performance and machin-
The tap is held with no axial or radial ing performance, with little to no self-guiding features.
Operation ; A fully synchronous machining system with fixed
adjustment in the collet and holder.
rigid holder is needed.
Example : "High speed tapping" and "fully synchronous
tapping."

Con-eccentric thread relief
(margin and thread relief)


Adjustable spring floating holder
(Tension & Compression)
Tap ; High level of self-guidance due to suitable tap diameter
margin and thread relief. The combination of nice portion of
margin and chamfer relief helps to make appropriate tap guidance.
Machine feed and tap's thread lead
errors are corrected by two types of
spring system in the holder, the axial
tension direction of the tap and the Concentric (No relief)
axial compression direction of the tap.
Information
Technical


Tap ; A full thread land stays in contact with the thread major
diameter at all times. Tap has no thread relief on major
diameter, creating a high level of self-guidance even with
unbalanced feeding conditions.


Technical-80