Обший каталог Yamawa 2016 - 2017 - страница 844

23. Selecting different tap holder combinations by machine feed system
Description of products


The function of machine feed systems
Fully synchronous feed (Rigid) tapping system
Spindle revolution and machine feed are synchronized, a perfect thread lead
and feed per revolution are realized.


Feed by lead screws
A better-feed condition is realized because the tap is fed by a master lead
screw shaft that has the same thread lead as this tap.

Feed by gear
The tap is fed at the same thread lead by a combinations of gears. This creates
a better-feed to thread lead condition.


Asynchronous feed system
Best used when the spindle rotation and the machine feed are set indepen-
dently, especially, if the machine feed value cannot be accurately predicted to
be that of the tap thread lead.

Hydraulic or Pneumatic pressure feed system
Feed is controlled by a pressure regulation system which normally results in an
inaccurate feed per revolution compared to the tap thread lead.

Manual feed
Feed is controlled by operator which is difficult to keep a stable amount of feed
Information
Technical


per revolution.


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