Общий каталог Yamawa 2021 - страница 558
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CHECK PINS
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Please check the hole size before tapping
Let's check the hole size before tapping 6H class internal threads of M6×1 by using Check-pin for cutting taps.
SL
∙ How to use CPC-S (Straight type)
STEP1
Check the minor dia. for M6×1 6H internal thread PO
STEP2 ST
Size of the Check-pin for M6×1
d1 d2 Select the two Check-Pins closest to the max and
Size L ℓ DS (Percentage of thread (Percentage of thread min size of minor dia of 6H internal thread, referring
| engagement) | engagement) | ROLL to the table on the left. |
| 4.917 (100%) | 5.026 (90%) | |
| 1 4.917(100%) and 2 5.134(80%) | ||
| 4.972 (95%) | 5.080 (85%) | |
| 6 16.5 73 M6 ×1 5.026 (90%) | 5.134 (80%) | Depending on the feature of work-piece materials, |
| it is benefi cial to tapping to make the hole size | ||
| 5.080 (85%) | 5.188 (75%) | |
| CARBIDE before tapping as large as possible and within the | ||
| 5.134 (80%) | 5.242 (70%) | tolerance. |
STEP
3
Insert the Check-pins 1 and 2, selected in step 2. 1 4.917 2 5.134 (100%) (80%)
Check-pin smoothly goes Check-pin doesn't go into the bottom of the hole. into the hole.
The hole is fi nished within minor dia of 6H GOOD class internal threads.
1.5Ｄ 2Ｄ You can easily check hole depth by the three lines marked on the pin. 2.5Ｄ
LONG
HAND
TAPS
EG (STI)
SPECIAL
THREADS,