Category: Drill Points

Besly Parabolic Flute Turboflute Drills offer Unique Advantages to Improve Performance

9/18/2023

Besly Turboflute Drill sets T-715-TF

Besly Turboflute Drills have heavy duty parabolic profiled flutes for easy chip flow.

Designed for automotive, aerospace, and other high volume metalworking industries, they give longer life and better drilled hole quality while allowing increased feed rates. The split point design seats itself and holds centers.

These heavier web drills are ideal for use in stringy, low and medium strength steels below 120,000 psi ultimate tensile strength, and for use in exotic and difficult-to-machine materials, ferrous and nonferrous.

Parabolic flute drills, also known as parabolic flute twist drills, offer several advantages compared to standard twist drills with straight flutes. These advantages make them a popular choice in various drilling applications. Here are some of the key advantages of using parabolic flute drills:

Improved chip evacuation: Parabolic flute drills have a curved or spiral flute design that helps facilitate better chip removal. As the drill bit advances into the material, it creates chips that move up and out of the hole more efficiently. This reduces the risk of chip clogging and ensures smoother drilling operations.
Reduced friction and heat generation: The curved flute geometry of parabolic flute drills allows for a larger volume of coolant or cutting fluid to reach the cutting edges and the workpiece, helping to dissipate heat effectively. This minimizes heat buildup and reduces the risk of workpiece overheating or material deformation during drilling.
Increased drilling speed: Parabolic flute drills are designed to cut more efficiently, thanks to their improved chip evacuation and reduced friction. This often translates to faster drilling speeds and shorter cycle times, making them ideal for applications where productivity is crucial.
Enhanced tool life: The combination of better chip evacuation, reduced heat generation, and increased drilling speed can extend the life of the drill bit. Parabolic flute drills tend to experience less wear and damage compared to standard twist drills, leading to longer tool life and cost savings.
Versatility: Parabolic flute drills can be used on a wide range of materials, including metals, plastics, and composites. Their ability to handle various materials makes them versatile tools suitable for different machining applications.
Improved hole quality: Due to their efficient cutting action and reduced vibration, parabolic flute drills often produce cleaner and more precise holes. This is particularly important in applications where hole quality is critical.
Lower power consumption: Because parabolic flute drills require less force to cut through materials, they can lead to reduced power consumption in drilling machines, which can result in energy savings over time.

It's worth noting that the specific advantages of using parabolic flute drills may vary depending on factors such as the material being drilled, the drill bit's size and geometry, and the machining conditions. However, in many cases, these drills offer improved performance, longer tool life, and a more efficient drilling process compared to standard twist drills.

Extra Length, Tanged, Bright Finish (Catl No T-218-TF)

Besly Turboflute Drill Extra Length Tanged Bright Finish T-218-TF

Besly Turboflute drills handle hole depths of up to 12 times their own diameter in a single pass. The unique flute design produces short chips, that pass out of the hole with no clogging or woodpeckering. These drills are designed for drilling materials such as steels below 120,000 psi ultimate tensile strength and iron castings.

Jobbers Length, Bright Finish (Catl No T-755-TF)

Besly Turboflute Drill Jobbers Length Bright Finish T-755-TF

Jobbers Length, Surface Treated (Catl No T-705-TF)

Besly Turboflute Drill Jobbers Length Surface Treated T-705-TF

Jobbers Length Sets, Surface Treated (Catl No T-715-TF)

Besly Turboflute Drill sets, Catalog No. T-715-TF. have heavy duty parabolic profiled flutes for easy chip flow. Designed for automotive, aerospace, and other high volume metalworking industries, they give longer life and better drilled hole quality while allowing increased feed rates. The split point design seats itself and holds centers.

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Which Drill Point Angle Should I be Using?

10/13/2022

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Technical Article written by Regal Cutting Tools

The selection of an appropriate drill point angle for your bit should be informed by questions about your application. Yes—a hole is a hole is a hole—but what is the purpose of the hole, what type of metal are you cutting into, and what are the specifications for the finished hole?

In addition to the drill point angle, factors that can affect successful drilling include:

Rigidity
Speed
Length of the Drill
Coolant Flow
Type of Drill Point

There are two main characteristics that define a drill point. First is the included angle of the point and the second is the configuration of the point. The point configuration is a key element in the choice of drill styles for a particular job.

Common Drill Angles

The most common included angles for drills are 118° and 135°. These angles are an artifact from the time when drilling was largely a manual process, and the drill bits were conventional conical shapes. Over time, tool makers learned that by grinding a conical point with a flat surface (a facet) to create a linear chisel, they could reduce the thrust required and also improve the process of cutting the metal or wood and removing the chips. If you’re drilling by hand, this is a clearly a major benefit.

Today, with advanced drilling machines, multi-faceted drill points are the norm. Not only do they require 50% less thrust, but they also generate 60% less heat than a conventional drill point. And there are a number of different configurations, each of which—when combined with a particular drill point angle—is suitable for specific jobs.

The general purpose drill points found on most jobber drills are 118° angled drills. They are typically used for cutting into soft metals such as aluminum, whereas the 135° variant is best suited for hardened materials, such as stainless steel. A 135° drill is flatter than 118°, which means that more of its cutting lips engage with the material surface sooner to begin the full metal cutting action.

Check out our guide below for what angles are optimal based on the material that is being drilled:

Specialized Drill Point Configurations

There are a number of drill point configurations and these may be found in both 118° and 135° variants. The different configurations are selected based on the drilling application—for example:

Are you cutting into hard metal or soft?
Is self-centering possible or will a guide bushing be needed?

Conventional points with 118° point angles are used most commonly for drilling in a wide array of materials. Other drill point configurations include:

Notched points: were developed for drilling hard alloys and have reduced drag on the chisel edge.

Helical points: have an S-contoured chisel that is self-centering and cuts close to actual drill diameter.

Racon® points: have a continuously varying point angle that generates less load and less heat while cutting into the metal and have a longer usage life. However, Racon points are not self-centering and must be used with a guide bushing.

Bickford™ points: combine the features of the Helical and Racon points—self-centering, long life, burr-free breakthrough and higher feed capacity.Nowadays, there are few excuses for not seeking and using the right point configuration for the job. Specialist companies make drill pointing equipment and have the skill to provide many other style points for tough applications.

There’s an old proverb “A bad workman always blames his tools,” which means that success is not dependent on the tools we use, but how we use them.

In the case of drill points, that may not be 100% true. While you can drill a hole with almost any drill point, the one you use may not be the best for the whole job, whether you are drilling one hole, a hundred holes, or thousands!

By choosing the right drill point configuration and included angle, you can receive longer tool life, more precise hole geometry, cleaner breakthrough and improved job productivity.

If you have questions about the right drill point for your job, just ask us!

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Besly Parabolic Flute Turboflute Drills offer Unique Advantages to Improve Performance

Extra Length, Tanged, Bright Finish (Catl No T-218-TF)

Jobbers Length, Bright Finish (Catl No T-755-TF)

Jobbers Length, Surface Treated (Catl No T-705-TF)

Jobbers Length Sets, Surface Treated (Catl No T-715-TF)

Which Drill Point Angle Should I be Using?

Common Drill Angles

Specialized Drill Point Configurations

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