Even though I perform centering, the ...
When the drill starts contacting the workpiece from its shoulder, you cannot achieve accurate hole positioning. Issue Example ・Using a starting drill with ... 詳細表示
Flute length is the length from the tip of the drill to the end of the flute. The drill must have space to evacuate the chips that arise during machining. M... 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
What is the drill step increment for ...
External Lubrication; ・For vertical machining centers: No step drilling up to 3D. Beyond 3D, use step increments of 1D to 2D as a guideline. (D = drill dia... 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
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
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 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
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
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
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