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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 and has a flat shape.
It has advantages in machining that is difficult to process with a drill with point angle .
This is
What is thinning?
Thinning is a process in which the chisel edge (the non-cutting edge) of the tip of the drill is thinned so that the blade is applied to the center of the drill.
It lowers the thrust resistance and makes it easier for the drill to cut into the workpiece.
A drill with an oil hole is a drill that has a hole (= oil hole) through the inside of the drill and can discharge cutting oil from the tip of the drill using the internal coolant supply , which is a specification on the machine tool side.
It can be lubric
The difference between a flat drill (ADF series) and an end mill for counterboring (ZDS series) is as follows:
ADF can be machined to twice the depth of the tool diameter. oversize can also be processed stably.
ZDS can be
What is point angle Effects of Drill point angle
point angle is the angle of the tip of the drill.
In general, 118° is the standard for high-speed steel, and 140° is standard for carbide steel.
The smaller the point angle , the smaller the ve
What is pick milling (High-speed stepping) G73
pick milling is a method of forcibly separating chips by separating the cutting edge from the machining point when machining a material that cannot be separated at a hole depth of 3D or less. (It does not discharge chips)
Stepping back to the entrance of the ho
(FAQID:692)
If the machining environment (workpiece shape, machine, etc.) is sufficiently rigid, consider counterboring machining from a state where there is no Pilot hole . This is because chips are easier to separate and better processed without Pilot hole .
If there is a Pilot hole
