Page 564 - Yamawa_European_Catalogue_YEU23
P. 564

Special Threads, Gauges




    Intro
            CHECK PINS



    SP
            How to use Check Pins                                                               5   th
            You can check both hole size and hole condition at the same time                     Step
            by this Check-pin!
                                                                   CPC-S
    SL                                                           straight type            Thread Inspection using
                                                                                           Simple Inspection Tool
                  1  st            2  nd            3  rd                        4   th           SIT

    PO                                                                                           (NB-6H)
                   Step             Step             Step                         Step
               Positioning &
                                   Drilling        Reaming                      Tapping
               Countersinking
    ST
                  Point drill       Drill           Reamer                         Tap
                  (PE-Q-V)

    ROLL





    CARBIDE




    LONG



    HAND                                                   ∙ Longer tool life
    TAPS           POINT      Appropriate bored            ∙ Improved quality of            Total cost
                             hole before tapping                                            reduction!
                                                            internal threads

    EG (STI)

            It is important to check the hole condition before tapping
    SPECIAL  Hole condition can be inappropriate before tapping.
    THREADS,  Accurate hole size and shape, enable longer tool life and avoid tapping troubles. Let's check the hole before tapping.
    GAUGES
    YMW

    THREAD    CASE                     CASE                     CASE                    CASE
    MILLS
               1       Bending          2       Slanting         3       Oversize hole    4       Undersize
                                                                                                  hole
                                                                         entrance
    DIES
              Check-pin stops          Hole isn't               Hole entrance            Hole is too
              on the way.              vertical.                is too big.              small.

    CENTER
                ×                        ×                         ×                        ×
    DRILLS
                                                                   BAD
                BAD
                                          BAD
                                                                                            BAD
    Technical
    info


       562
   559   560   561   562   563   564   565   566   567   568   569