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The unit of feed (mm/rev) of the drill indicates how many millimeters the drill advances in one revolution. The unit is read as "milliper revolution".
OSG's Drill Catalog Condition Table lists the feed rate (mm/rev) per rotation of drills of major sizes in a range for each material. When referring to the feed
What is the rotation speed when inserting a long drill into the guide hole?
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
Since the drill digs while releasing chips, it is necessary to constantly drain chips from the trench to the outside. If you dig to the point where all the trenches are filled, you will not be able to drain the chips, and the chips will get stuck in the grooves and the dri
If you have enough mechanical horsepower, you don't need Pilot hole . It is recommended to drill holes from a solid state.
When drilling after Pilot hole machining due to insufficient machine horsepower, etc., there is a risk that chips wil
How do you know between a flat drill and a drill with point angle ?
counterboring Please use it in situations where it is not possible to process unless it is in that shape, such as machining, or in situations where a flat drill is advantageous.
Where flat drills are advantageous
・ Drilling i
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
Dwell machining is a machining method that temporarily stops the progress of machining while the drill spindle is rotated.
It may be used to improve the surface accuracy of the bottom of the hole or to improve chip discharge by processing with a drill with an oil hole.
(A) Machining (B) Stop (C) Improving the surface rou
