ビギナー向け資料 | オーエスジー

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Cutting data of end mills and indexable tools
 

For milling and indexable tools, the following three numbers are required:

 

(1) Rotation speed (min-1)

How many revolutions per minute .

In NC code, it is expressed by "S". Example: 300 revolutions per minute = S300

(2) Feed speed Vf(mm/min)

No : 370
Published : Modified : 2024/08/28 02:29
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What does div> 2D, 3D, 4D, and 5D mean?

D stands for tool diameter.

It is expressed as several times the depth and length of the tool diameter, and is expressed as ○○D.

In drills and end mills, it is expressed as many times as the outer diameter of the tool, and in Tap , it is expressed as several times as the outer diameter of the thre

No : 697
Published : Modified : 2024/08/28 02:29
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What is the effect of the torsion angle of a drill?

As for the effect of the helix angle, the standard twist is 30°.
For weak twisting, the sharpness is reduced, but the cutting edge strength is high.
The stronger the torsion angle, the sharper the edge, but the lower the cutting edge strength.
The stiffness of the drill is higher with weak torsion.
No : 7618
Published : Modified : 2024/11/04 14:49
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What is flute length ?

flute length is the length from the tip of the drill to the end of the groove.
The drill must have space to drain the chips that arise during machining.
Make sure you have enough flute length of the drill to be used for the depth of the hole to be machine
No : 7622
Published : Modified : 2024/08/28 02:29
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What is a back taper?

The outer diameter of the drill is tapered from the tip to the shank, and it is attached to avoid friction with the inner surface of the hole during cutting.

No back taper
With back taper
No : 7623
Published : Modified : 2024/08/28 02:29
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What is Lip Height?

Lip height is the difference in the height of the cutting edge when the drill is rotated. If the lip height increases, it will be cut only with one blade, which will result in unstable processing. As a result, it is more likely to cause hole enlargement and breakage.

No : 7627
Published : Modified : 2024/11/04 14:49
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What is a shank with a tongue?

It is a shank with two flat sides at the end of the shank.

The tongue is mainly used for detenting.
For our drills, EX-GDXL is the applicable specification.
No : 7631
Published : Modified : 2024/08/28 02:29
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What does cutting speed mean?

Cutting speed is the speed at which the outermost part of the tool moves in one minute.
Symbols are denoted by Vc. The unit is (m/min).

The cutting speed (Vc) can be calculated from the outer diameter (Dc) and rotational speed (min⁻¹) of the tool.

Formula for calculating cutting speed (Vc)
No : 7757
Published : Modified : 2024/08/28 02:29
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What is the feed rate of a drill?

The feed rate is the number of millimeters that the tool moves in one minute.

The unit of feed velocity (Vf) of the drill is (mm/min).

The feed rate can be calculated by multiplying the rotation speed listed in the catalog by the feed amount.

The feed amount is the distance of how many millimeters the tool has traveled in

No : 7758
Published : Modified : 2024/08/28 02:29
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What is rotational speed?

Rotational speed means how many revolutions the tool makes in one minute.

In the machining program that moves the machine tool, it is expressed by "S". In calculations, "n" may also be used. The unit is (min⁻¹). Example: S2000 → 2000 revolutions in 1 minute

The expression of the speed of rotation is different from t

No : 7759
Published : Modified : 2024/08/28 02:29

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