Обший каталог Yamawa 2016 - 2017 - страница 761

PRAD system Solution tool
Product
Reborn
According to
Demand


? What is PRAD system ? Efficient use of limited resources.
PRAD system is the new system which has
never been seen before.
P Product
PRAD enables us to make the tap most suita- R Reborn
ble for specified applications by using taps in
Yamawa or those stocked at customers' hands. A According
It also enables us to manufacture special taps
by using Yamawa standard tap blanks.
D Demand
? What is standard blank ? … Standard blank system

●Blank is generic designation of semi-finished product before form-
ing a tap.
●Standard blank is the blank for manufacturing standard tap.
●Special taps will be completed only after the process of edging (on
flute,thread and chamfer), by using the blanks which are already
heat treated and shank ground.
●5 kinds of thread standard(unified, whitworth, SM-sewing machine
screw, STI metric, STI unified)
For 5 kinds of thread standard, let's use Metric thread blanks. Standardization can
Metric
Unified（U） Whitworth（W） Sewing machine screw（SM） thread realize commoniza-
blanks tion of tap collets.
STI metric STI unified

Commonization of tap collets. (Example) In the case of M20 x2.5 and 3/4-10 UNC
Before After
Dimension of old blanks Dimension of new blanks
Ds
M20X2.5 Stand-
Ds : φ15 M20X2.5 Ds ardiza-
3/4-10UNC tion of
Ds
Ds : φ15 shank
3/4-10UNC diameter
Ds : φ14

! Circumstances surrounding
tool materials
C
C
C
C


Depletion of resources
C
C
C


Main tool materials for Yamawa taps use In the world, rare metals omnipresent.
a lot of rare metals as the substrate. Political situation can make it more diffi-
Today market price of rare metals has cult for us to obtain these rare metals.
risen due to collapse of the balance So, it is quite important to assure stable
between supply and demand. supply and recycling technique.

PRAD system is globally- friendly and stands on customer's eye.
757