Why does a drilled hole become polygo...
It is likely caused by drill runout during machining. Possible Causes ① Runout when mounting the drill Countermeasure: Keep mounting runout within 20 μm ... 詳細表示
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 cutting ... 詳細表示
This is a drill with a flat tip, and the ADF and ADFO series are applicable. A flat tip shape is one in which the point angle of the drill is 180 degrees an... 詳細表示
What causes hole enlargement during d...
Hole enlargement occurs due to tool runout or chattering during machining. In addition, runout at the time of tool installation affects both hole diameter a... 詳細表示
Is a centering process always necessa...
Centering is performed to improve hole position accuracy and to suppress unstable behavior at the hole entrance during machining. However, if there is no st... 詳細表示
Do you need to drill a pilot hole bef...
Do you need to Pilot hole for large drilling? If you have enough mechanical horsepower, you don't need Pilot hole. When machine horsepower is insufficient,... 詳細表示
The effect of the helix angle of the ...
The standard helix angle is 30°. A low helix angle reduces sharpness but increases cutting‑edge strength. A high helix angle provides a sharper edge but lo... 詳細表示
What is pick milling (Peck Processin...
What is peck feeding (High-speed step feeding) G73 peck feeding is a method of forcibly separating chips by separating the cutting edge from the machining p... 詳細表示
What is a drill with oil holes? inte...
What is a drill with oil holes? internal coolant supply ？ A drill with an oil hole is a drill that has a hole (= oil hole) through the inside of the drill ... 詳細表示
What is the PD Series of Indexable Dr...
PD is a high-efficiency indexable drill with oil holes that pursues chip discharge. (Indexable: chip interchangeable, meaning throwaway) The high chip evac... 詳細表示
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