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
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
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
Is there a formula for calculating th...
Experimental Formulas for Estimating Thrust Force, Torque, and Required Power When considering the clamping method or fixture design for a workpiece, it is ... 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
What is step feeding? G83 Step feeding is the action of stopping the hole drilling in the middle, taking the drill out of the hole once, and then drilli... 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 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
Why does a drilled hole become polygo...
It is likely caused by drill runout during machining. Possible Causes ① Runout when mounting the drill Countermeasure: Keep mounting runout within 20 μm ... 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
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