Обший каталог Yamawa 2016 - 2017 - страница 761

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Product PRAD system Reborn Solution tool According to Demand ? What is PRAD system ? Efficient use of limited resources. PRAD system is the new system which has P Product never been seen before. R Reborn PRAD enables us to make the tap most suita- ble for specified applications by using taps in A According Yamawa or those stocked at customers' hands. It also enables us to manufacture special taps D Demand by using Yamawa standard tap blanks. ? 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. Metric Standardization can Unified（U） Whitworth（W） Sewing machine screw（SM） thread realize commoniza- STI metric STI unified blanks tion of tap collets. 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 Stand- M20X2.5 Ds ardiza- Ds : φ15 M20X2.5 tion of Ds 3/4-10UNC shank 3/4-10UNC Ds : φ15 diameter Ds : φ14 ! Circumstances surrounding C tool materials C C C C Depletion of resources 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