Обший каталог Yamawa 2016 - 2017 - страница 840

22. Features of MC-Helical Thread Mills
Description of products


Various nominal diameter internal threads of the same pitch can be produced with the same thread mills.
The same mill can be used for both right-hand and left-hand internal threads.
Chips become very minute, and troubles caused by chips are rarely expected.
Internal threads of large diameter are obtainable even with low power machines.
Size control (undersize or oversize) is easy on programming process. Thus, internal threads with voluntary thread limits can be obtained.
When using MC-Helical threads mills for producing taper pipe threads, the threads are produced in a perfect cutting circle.
With no stop marks (stop marks are inevitable in taper pipe thread tapping), high quality pressure-tight joint can be made.


Right hand thread
Central axis of cutters Central axis of cutters


Central axis of work material Conventional Climb Central axis of work material
milling for milling for
through hole blind hole


Left hand thread
Central axis of cutters Central axis of cutters
Information
Technical


Central axis of work material Climb Conventional
Central axis of work material
milling for milling
through hole for blind hole


Note : Basically, conventional milling is recommended due to excellent chip ejection. However, climb milling is recommended in the case of poor horse power and poor rigidity of the machine.

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