Flute shape of condensed technology.
Crystal of knowledges to meet with
the need of manufacturing site.
Yamawa's center drills and tools are born from the idea based on thorough manufacturing site. Yamawa is improving the flute shape through incessant R&D.
Center Drills
Harmony between the chip flow at drill portion and that at countersink portion.
Yamawa center drills have the flute wide enough to accommodate above chips and special enough to eject chips out.
Yamawa center drills have the cutting edge on both end and have spiral flutes. They have the good chip ejection and lessen the breakage caused by chip clogging. Considering drill strength, Yamawa center drills minimize the drill length, and have R within the back taper at connecting point to supplement the disadvantage of strength at the connecting point.
Yamawa center drills have the wide line up in this series.
High helix flute
photo: High helix flute, A type 60 degree
Comparatively sticky material, particularly soft material.
Low helix angle flute
photo: Low helix angle flute, A type 60 degree
Particularly when the high accuracy is needed for the center hole and when the material is rather hard.
90 degree drills
photo: Low helix angle flute, A type 90 degree, TiN coating
These drills are used for simultaneous processing of positioning and beveling during drilling process, and used for beveling after boring.
Long shank
Drills suitable for NC machine and MC machine. They have two types, 100mm long and 150 mm long.
photo: Long shank drills
TiN coating
photo: High helix flute, A type 90 degree, TiN coating
Superior in anti-resistance.
Point Drills
New proposal of centering drill. To solve the tool breakage problem. Simultaneous process of positioning and beveling
Drills suitable for positioning. Realizing simultaneous processing, centering and beveling, these point drills greatly decrease the processing time for centering. Yamawa shortened the time from centering to tapping by about 5 seconds by using Yamawa point drills. This means to shorten more than 1 hour in the process of 1000 holes.
Counter sinks
Used for beveling of round hole, beveling of installing holes for small saucer type screws and bolts and beveling of flutes.
Countersinks are used to beveling of round holes, beveling of installing holes for small saucer type screws and bolts and beveling of flutes. Having specially designed cutting edge and flutes, Yamawa countersinks have little vibration and second burs, and can make the stable and high precision cutting with clean surface.
Please use by fastening both tools and materials stably.
NC starting drills
Excellent capability of chamfering for positioning even on curved face and slant face!
Due to the special design to strengthen the body, stable positioning and beveling of high accuracy become possible. They are good in taking up the material, and work well in curved face and slant face which are said to be difficult to cut.
We have the type applied by TiN coating which is superior in wear resistance.
Submarine gate drills
Special drills to machine submarine gate in the mold for plastic injection.