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This is a drill with a flat tip, and the ADF and ADFO series are applicable.
A flat tip shape is one in which the point angle of the drill is 180 degrees and has a flat shape.
It has advantages in machining that is difficult to process with a drill with point angle .
This is
What are the causes and countermeasures for hole enlargement in drilling?
The enlargement of the hole is caused by the runout and vibration of the tool during machining.
In addition, the runout of the outer circumference during installation affects the hole diameter and hole position accuracy.
Even with a high-rigidity and high-precision drill such as t
Estimating thrust, torque, and power requirements
When considering the clamping method and clamping fixture of the workpiece, the thrust and torque generated during drilling must be considered. If you want to make an approximate guess, you can find it from a simple empirical formula. Here is a
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 center of the workpiece. It is a stepped specification that combines the small diameter drill part at the tip, the tapered part according to the center hole angle, and the
Do you need drilling centering?
Centering is used to improve hole position accuracy and to reduce unstable behavior during hole entrance machining.
Unless the hole position accuracy is strictly required, or the machining of slopes or spherical surfaces, centering is not always necessary.
If this is not the case, the use of a high
Even though the hole position is centered, the hole position becomes unstable. What can be done to improve the accuracy of the hole position?
When the drill starts to hit the workpiece from the shoulder, it is not possible to get the hole position properly.
Defect examples
point angle 90° starting drill for chamfering,
This may be due to runout during drilling.
(1) Runout when installing the drill.
Solution: Keep the installation slip within 20 μm (0.020 mm).
(2) If the lip height of the drill at regrinding time (variation in the height of the left and right cutting edges) is large, the drill tip w
What is thinning?
Thinning is a process in which the chisel edge (the non-cutting edge) of the tip of the drill is thinned so that the blade is applied to the center of the drill.
It lowers the thrust resistance and makes it easier for the drill to cut into the workpiece.
A drill with an oil hole is a drill that has a hole (= oil hole) through the inside of the drill and can discharge cutting oil from the tip of the drill using the internal coolant supply , which is a specification on the machine tool side.
It can be lubric
It is not possible to select a suitable tool based on the information of titanium material alone.
There are some titanium materials that have different properties, such as two types of pure titanium (TB340) and titanium alloys (Ti-6Al-4V_TAB6400). Therefore, further information on the mater
