Chamfer Tools for Various Machining Styles and Materials

6 Flute Chamfer Tool

Chamfering and beveling are common operations that can be found in every machine shop, assembly floor, or hobbyist’s garage. These sloped surfaces protect hand injuries, aid assembly, and help part aesthetics.

Harvey Tool offers a variety of chamfer cutters for various materials and machining styles. These include pointed, flat end, and center cutting cutters.

Solid Carbide End Mills

Solid carbide end mills are harder and more wear resistant than high-speed steel and provide a sharper cutting edge that lasts longer than tools made of other materials. They are available in a variety of sizes, flute counts, geometry and coatings.

Choosing the right solid end mill starts with thoroughly evaluating the operation and the material to be cut. Flute count, helix angle and geometry all factor into the cutter’s performance and cost.

For example, a high helix angle reduces tool deflection by transferring stress vertically rather than horizontally. It also produces a greater shearing action, which can increase speeds and feeds by improving chip control.

A titanium nitride (TiAlN) or aluzinc coating resists corrosion and dissipates heat to prevent burning, which helps prolong the life of your cutter. These coatings are ideal for high-speed cutting and dry machining.

Carbide Tipped End Mills

There are many different end mill options available for use in a variety of materials and operations. Some of the more common styles include pointed, flat end and centre cutting. Pointed end mills have a sharp tip that can be used for deburring or chamfering in narrow grooves and slots. Flat end mills are suitable for side and face milling, plunging and slotting.

End mills come in a range of flute counts and types, with the number of flutes being an important consideration. For example, a 2 flute style allows for quicker chip evacuation and reduces chatter in hard materials. A 3 flute design provides the best balance between chip evacuation and strength.

Helix angles can also have a significant effect on how well an end mill performs. For example, low helix end mills are able to cut more aggressively but will generate much more heat, which can lead to tool failure or poor surface finish.

Solid Carbide Back Chamfer Cutters

These cutters are used to chamfer the back side of slots, through holes and part projections. They have a low profile design and a greater radial projection than end mills, and they cut faster for quicker part finishes.

These chamfer cutters have a brazed carbide head, with a tip that comes to a point. They are uncoated and are available in a variety of diameters.

They can be used in a revolving operation to chamfer both sides of a workpiece with one pass. This saves time and reduces the number of tools required.

Designed to provide up to 1/16″ top face chamfer on plastic sheets or parts. The finished side edge eliminates peeling and improves gripping on sheet or workpiece.

Use with DCNS drills with a chamfering holder to perform drilling and chamfering in one operation. Standard XCGT inserts mounted on the CHAMRING body provide 3 standard chamfering angles: 30deg, 45deg, and 60deg.

Carbide Spot Drills

Carbide spot drills leave a small divot to pinpoint the center of a drill before plunging. This prevents the drill from “walking” during the holemaking process and improves overall accuracy. Some machinists also use these tools to chamfer the top of drilled holes, so screw heads sit flush with the part once inserted.

These spot drills have short flutes and a stub overall length for maximum rigidity. They can be used on a variety of materials, including harder steels. They are available with 90, 120, and 142 degree included angle points and uncoated or ALTiN coated.

A spotting drill is often used with twist drills to ensure accurate hole positioning and eliminate chatter during the machining process. They can be machined together to form a spotting hole and a flat bottom counterbore in one work step. However, a spotting drill may not be adequate to retain holes in an uneven or irregular surface, so machinists should use a flat bottom counterbore for more demanding applications.

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