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
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
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
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
What is the feed rate of a drill?
Feed rate is how far the tool moves per minute. The unit of feed velocity (Vf) of the drill is (mm/min). The feed rate can be calculated by multiplying the... 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
A center drill is a tool for machining center holes, which is required when a tailstock mounted on a tailstock is used mainly on a lathe to support the c... 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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