What is point angle Effects of Drill...
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 dr... 詳細表示
What is the difference between a thre...
2-Flute drills have good chip removal properties and are suitable for deep hole drilling and soft workpiece materials. 3-Flute drills are characterized by t... 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 do 2D, 3D, 4D, and 5D mean?
What does 2D, 3D, 4D, and 5D mean? D stands for tool diameter. It is expressed as several times the depth and length of the tool diameter, and is express... 詳細表示
Thinning is a process in which the chisel edge (the non-cutting edge) of the tip of the drill is thinned so that the cutting edge is applied to the center of... 詳細表示
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
What does drill feed rate (mm/rev) mean?
It indicates how many millimeters the drill advances per one revolution. In OSG’s drill catalog, recommended feed rates (mm/rev) are listed as ranges for ma... 詳細表示
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 spindle speed should be used whe...
As a guideline, reduce the spindle speed to 500 min-1 or less when inserting a long drill (whether carbide or HSS) into a guide hole. For very long drills, s... 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
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