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answer
Cutting data of tapered taps for pipes Calculation method PT (Rc)

The following formula is used to calculate the cutting data in the same way as for metric screws.
 
Rotation speed (S) = (cutting speed ×1000) ÷ Tool diameter ÷ Pi (3.14)
 
Feed speed (F) = pitch × rotational speed
 
The tool diam
No : 4905
Published : 2020/01/06 16:29 Modified : 2024/08/28 02:29
answer

What is the tool diameter of the pilot hole and the tap of the American standard pipe screw? NPT NPSC NPTF NPSF

・ Pilot hole diameter

When machining pilot holes with a drill, refer to the value of "When not using a reamer" in the table below.

• Tool diameter of the tap

For the tool diameter when calculating the cutting data, refer to the number on the outer d

No : 5109
Published : 2020/01/06 15:03 Modified : 2024/08/28 02:29
answer

What is the pilot hole diameter and the tool diameter of the tap? Rc PT G PF

Please refer to the following link for the pilot hole diameter of the pipe screw.

You can check the pilot hole diameter and tap outer diameter of the following screws.
Tapered screw fo

No : 5108
Published : 2020/01/06 15:00 Modified : 2024/08/28 02:29
answer
一厘 (一厘) is the unit used to represent size in inches.
1 inch = 25.4 mm
1 minute (ichibu) = 1/8 inch = 3.175 mm

一厘 (いちりん) = 1/10 of 1 minute (ichibu) = 0.3175mm
It may be used as a word to express "Ichirinbuto = about 0.3mm thick".
In addi
No : 2529
Published : 2019/08/28 13:48 Modified : 2024/08/28 02:29
Category: General
answer

In conversations with customers, we sometimes use the expression "I want a tap of Sambu."

Sambu is one of the so-called industry terms, and the size of the screw expressed in inches may be expressed as "○○bu".

1/8 = Ichibu (1 minute)
1/4 = 2/8 = Nib (2 minutes)
3/8 = Sambu (3 minutes)
1/2 = 4/8 = Yeonbu Sibu (4 min.)

The numerator when the denominator i

No : 2528
Published : 2019/08/28 13:11 Modified : 2022/04/20 11:31
Category: General
answer

Both refer to the base material used for tapping.

SKS is an alloy tool steel.

・HSS is called high-speed tool steel.

The main difference between the two is the difference in high-temperature hardness.

In contrast to the cutting heat generated during tapping, HSS has a high high-temperature hardness even when the temperature rise

No : 2524
Published : 2019/08/28 08:52 Modified : 2022/04/26 16:25
Category: General
answer
It is important to note that there are various interpretations of the expression "machine tap".
 
In Japan, there are many cases where it is one of the following.
  • Refers to the "nut tap" (product name symbol = NT) used in a machine dedicated to nut processing
  • It refers to " spiral f
No : 1846
Published : 2019/05/09 13:53 Modified : 2024/08/28 02:29
Category: Tool selection
answer

No, you can't.

If the pilot hole is pierced but the screw is not, consider it a "stop hole" and use spiral fluted tap .

In spiral pointed tap threading, chips leave the material only when the tap chamfer is completely penetrated.
If the spiral pointed tap

No : 922
Published : 2019/02/28 12:58 Modified : 2024/08/28 02:29
answer
The pilot holes of the taps of the 467UNF and UNJF threads are different.
The UNJF for aerospace applications has a larger minor diameter (pilot hole).
No : 467
Published : 2019/02/26 18:10 Modified : 2022/06/09 11:25
answer
MT6×0.75 screws and grease nipples are external thread standard. (JIS B 1575) external thread is 1/16 taper, but internal thread is a parallel thread and can be processed with a tap with M6×0.75 STD notation.
No : 480
Published : 2019/02/26 18:10 Modified : 2024/08/28 02:29

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