What causes hole enlargement during d...
Hole enlargement occurs due to tool runout or chattering during machining. In addition, runout at the time of tool installation affects both hole diameter a... 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
Lip height is the difference in the height of the cutting edge when the drill is rotated. If the lip height increases, it will be cut only with one cutting ... 詳細表示
What is pick milling (Peck Processin...
What is peck feeding (High-speed step feeding) G73 peck feeding is a method of forcibly separating chips by separating the cutting edge from the machining p... 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
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
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 a back taper? The outer diameter of the drill is tapered from the tip to the shank, and it is attached to avoid friction with the inner surface ... 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
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
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