1. An Underestimated Multi-functional Cutting Tool
Twist drills, center drills, reamers and two-flute end mills are commonly used for hole machining. Flat bottom drills are seldom recognized, and many users mistakenly think they only work for hole enlargement instead of direct drilling.
Many operators apply end mills to hole processing, which easily leads to poor chip evacuation, low precision, tool breakage and heavy burrs. Most conventional flat bottom drills lack centering structure, causing drilling deviation and short service life.
High-performance flat bottom drills support both direct drilling and precision reaming, delivering stable performance on complex surfaces. After three years of research and development, solid carbide flat bottom drills have been put into mass production. There are over 2000 regular specifications covering 1mm to 20mm.
2. Core Technology & Advantages
Poor drilling performance of ordinary flat bottom drills results from defective structure, including insufficient centering, fragile cutting tips and unreasonable chip grooves. Severe vibration and low accuracy occur during steel machining.
Optimized geometric design solves three major processing difficulties:
Accurate centering structure prevents position offset at the initial drilling stage.
Crescent chip grooves reduce cutting resistance. R-type chip breakers discharge granular chips to avoid clogging and tool overheating.
C-angle and protection plane enhance tip toughness for steady steel cutting.
This tool fits diverse tough machining cases such as inclined surfaces, curved surfaces, cross holes, half holes, thin plates and blind holes. Machined holes have slight burrs with no secondary trimming required generally.
3. Professional Q&A
Can it drill holes directly?Yes. It conducts direct drilling on all materials without pre-positioning, and reams holes to standard sizes.
Is side milling and grooving available?No. It is only suitable for axial machining. Side cutting will damage the tool and impair machining accuracy.
What about drilling precision?Accuracy is determined by equipment, tool holder runout and cutting parameters. Optimized tip structure achieves fine surface finish and qualified dimensional tolerance.
Service life compared with pointed drillsThey have similar durability on plastic, copper and aluminum. Pointed drills perform slightly better on steel, yet fail to locate steadily on irregular surfaces where flat bottom drills work best.
Is the hole bottom completely flat?Tiny unevenness exists to balance drilling and reaming performance. Smaller sizes gain higher flatness. Special reamers are needed for fully flat hole bottoms.
Differences from two-flute end millsEnd mills excel at side milling but suffer bad chip removal and frequent breakage in vertical drilling. Flat bottom drills are designed for axial hole cutting with smooth chip evacuation and superior machining quality.
One-step finished hole machiningIt is feasible for low-precision through holes. High-precision holes can be finished by combined drilling and reaming process.
Applicable machining materialsCompatible with plastic, brass, copper, aluminum, carbon steel, stainless steel, titanium alloy and hardened steel.
Selection tips between flat bottom drills and pointed drillsChoose pointed drills for flat surface drilling. Flat bottom drills are ideal for inclined surfaces, cross holes and special working conditions to raise working efficiency.
Solutions for unbroken chipsAdjust cutting parameters firstly. Increase coolant pressure or adopt vibration tool holders if chip breaking still cannot be realized.
