Center Drill

A center drill is a tool for machining center holes, which is required when a tailstock mounted on a tailstock is used mainly on a lathe to support the c... 詳細表示

Drill selection procedure How to choo...

Step (1) Check how many times the depth of the hole to be processed is the diameter If the drill diameter (D) is 10 mm and the depth is 30 mm Calculate 30÷... 詳細表示

What is revolution?

Revolution 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 calcula... 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 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

Drilling holes in titanium materials ...

It is not possible to select a suitable tool based on the information of titanium material alone. There are titanium materials with different properti... 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 Dwell Machining (Drilling)

What is Dwell Machining? (Drilling) Dwell machining is a machining method that temporarily stops the progress of machining while the drill spindle is rotate... 詳細表示

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 (... 詳細表示

What is a shank with a tang?

What is a shank with a tang? It is a shank with two flat sides at the end of the shank. The tang is mainly used for detenting. For our drills, only ... 詳細表示