and high quality
外部給油式：シングルマージン
加工基準
加工基準
穴位置ずれ
0.021mm
0.053mm
External Coolant Supply: Single Margin ppy g g
D Compared to powdered HSS drill, good hole precision (die steel drilling)
Good hole position accuracy Minimal hole deviation
穴曲がり
0.004mm MDE Type
0.596mm
Competitor's Powdered HSS Drill
Machining reference
Machining reference
0.021mm
0.053mm
Positioning Deviation
Work Material:
NAK55
Tool:
MDE 0680S07E04 (ø6.8mm x 4D)
Cutting Conditions: v c =50 m/min f =0.1mm/rev H =20mm
Ra=0.513μm Rz=2.675μm external coolant supply (water soluble)
Ra=0.111μm Rz=0.926μm
光沢有り、良好
むしれにより白濁
0.004mm
0.596mm
Hole Deviation
0 1 2 [µm]
0 1 2 [µm]
面
面 粗 さ
D Comparison of hole wall
粗 さ
-2 -3 -1
-2 -3 -1
（ Rz ）
（ Rz ）
MDE Type
Competitor's Powdered HSS Drill
Ra=0.111μm Rz=0.926μm
Ra=0.513μm Rz=2.675μm
Cloudiness due to blemishes
Shiny and good
0 1 2 [µm]
0 1 2 [µm]
-2 -3 -1
-2 -3 -1
7
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