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Last but not least is the whole topic of insert nomenclature. It’s a deep subject, one filled with exceptions and cutting tool-specific rules. Regardless, most manufacturers follow the ANSI or ISO tool identification system (and sometimes both). We won’t get into the details here except to say that it uses an alphanumeric code to specifies an insert’s shape (round, square, triangular, etc.), clearance angle (neutral to positive), tolerance (some inserts are pressed to size, while others are ground), the size of the locating hole (if any) and clamping method, its size and thickness, corner radii, and various other defining features (see the chart above for an example).

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We've compiled a guide that helps you 'break the insert code' and easily identify your indexable inserts! Download your key to understanding the insert code system, the same reference our tech team utilizes on support calls and while machining themselves!

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Long story short, carbide insert selection is much easier than it once was, even though the number of cutting tool options has grown exponentially since the days of brazed carbide and HSS tool bits. Download a catalog, log in to NOVO, or give your local cutting tool representative a call. You’ll be making chips in no time.

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Snappy Flat Bottom Counterbores are used to drill the pilot hole or clearance hole and counterbore a flat bottomed hole in one step. Great for lag screws, ...

Indexable cutting tools are especially important on CNC machinery, where the need to keep spindles turning at all times is critical. Here, machinists rely on indexable drills—often with coolant running through them—to make holes quickly, followed by indexable boring bars to finish machine them. Indexable face mills true up large flat surfaces; indexable end mills rough out pockets and cut slots; indexable profiling tools trace complex part shapes. There’s very little that can’t be machined with indexable cutting tools.

Choose from our selection of 3/16" end mills, including carbide square end mills, high-speed steel square end mills, and more. In stock and ready to ship.

Developed for the experienced or novice wood turner, RIKON's turning system features tungsten carbide cutters that keep their sharp cutting edges longer.

Web applications like Kennametal’s NOVO system not only guide users through the cutting tool selection process, but also help with job management and provide numerous video tutorials.

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Probably not. Just as there’s no shortage of indexable carbide tooling optimized for certain materials, there’s also no shortage of excellent general-purpose cutting tools. These represent a middle ground between performance and the tool crib bloat just mentioned. That said, the decision to go the material-specific route is a delicate balancing act—if a job’s going to be in the machine for more than a few days or is sure to come around again in a month or two, it almost always makes sense to buy carbide inserts designed for that material.

From the designer: This is a custom insert that I have designed to fit your Milwaukee Packout to better store your long series drill bits and reduced shank ...

When it comes to cutting tool selection, machinists have three basic choices: brazed carbide tool bits, indexable tooling with carbide inserts, and solid tools made of carbide or high-speed steel (HSS). This article will explain why the middle choice—indexable turning, milling, and drilling tools—is often the best choice for productive, cost-effective machining.

Complex naming systems aside, however, choosing the right insert for your machining application isn’t as difficult as it might appear. That’s because cutting tool manufacturers have developed online tool advisors that walk machinists and programmers through the tool selection process. For example, Kennametal’s NOVO prompts users to answer questions about the metal removal process (milling, turning, or holemaking), the machine tool that will be used, workpiece material and removal amount, and expected depths of cut. It then generates a machining strategy along with insert and toolholder suggestions, ordering information, product availability, feed and speed recommendations, and more.

Simply put, if there’s an alloy out there, the chances are excellent that a material-specific carbide grade is available to cut it. However, some shops machine aluminum one day, iron the next, and titanium the day after that, often in low quantities. Does this mean they need to bloat their tool crib with dozens upon dozens of different carbide insert grades and geometries, many of which will only be used occasionally?

HSS tool bits present a similar story. They’ve been around even longer than brazed carbide. They’re much less expensive than carbide and there’s no need for brazing—just sharpen the tip however you want and get cutting. Sadly, you won’t be cutting very long or very quickly because HSS boasts a cutting speed of just one-fourth that of tungsten carbide, and even less compared to some of the newer, coated grades. HSS might be fine for hobbyists with loads of time on their hands, but carbide is the first choice for professional machine shops.

For as long as there’s been tungsten carbide (which is roughly nine decades), machinists have been brazing small hunks of it to steel shanks and then grinding a sharp edge on the result. These brazed carbide tool bits and boring bars are easy to make, customizable to the application, and inexpensive. Unfortunately, their effectiveness depends on the machinist’s brazing and grinding skills. And since the tool must be removed from the mill or lathe for sharpening, they also lead to significant and costly machine downtime.

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Tolerance is very difficult to measure, but any letter in this position (third letter) will work in any toolholder, if the other letters and numbers are correct.The most common letters for tolerance are G and M.

~1600-2000 rpms is the right speed for drilling a half-inch hole into aluminum. That said, it may not be the right speed for you. Specifically ...

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... DEWALT DCS494B 20-Volt MAX Lithium-Ion 14-Guage Cordless Swivel Head Double Cut Shear (Tool Only). Item No. 23786 Out of stock. $349.99. Out of stock

But how do you know what carbide inserts and cutter bodies to buy? And why are there so many different grades of carbide inserts out there? Good questions; we’ll start with the second one first. Unlike a few decades ago, when machinists had just a few grades to choose from, there are now dozens of inserts grades, coatings, and chip-breakers available.

This numbering system chart from the Kennametal Innovations catalogprovides a guide to the company’s extensive assortment of turning inserts. Other manufacturers offer similar guidelines.

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That statement extends to HSS rotary tool bits such as end mills, drills, and reamers, all of which are used daily throughout the manufacturing industry. That’s a shame. Yes, these tools are less expensive than their solid carbide alternatives, but as mentioned, they’re also far less wear-resistant, predictable, and productive. These factors explain why leading cutting tool manufacturers emphasize the importance of carbide tooling to their customers and why many have stopped offering HSS cutting tools altogether.

Many of these are tailor-made for specific materials or material groups. For instance, a shop making aerospace components can greatly increase efficiency by purchasing carbide inserts designed for tough, heat-resistant superalloys (HRSA) such as Inconel and Hastelloy. The same is true for medical shops, which tend to cut corrosion-resistant, biocompatible materials like 316 stainless steel, cobalt chrome alloy, and titanium. Automakers can dial in their processes by using inserts optimized for cast iron and low carbon steel, while oil and gas producers benefit from tooling that excels in duplex steel.

... saw blade, jointer fence, band saw blade and other machinery setup operations. With the square standing upright, checking casework parts for square is an ...

Where machinists and toolmakers once had to grind special shapes into their brazed or solid carbide tools, they now have the option of buying off-the-shelf indexable inserts in a huge variety of geometries and styles. Need to cut a 1/16” wide groove in a shaft? How about an Acme thread, or a 45-degree chamfer around a part periphery? These and other insert shapes are readily available, no grinding necessary.

That leads us to indexable carbide inserts, the workhorses of the machining industry. As with old-fashioned brazed tools, indexables also utilize small bits of carbide. The difference is how they’re attached. Rather than a permanent braze, indexable tooling relies on a screw or clamp to secure the carbide insert to the tool body. When the edge becomes worn, swapping it out only takes seconds. More importantly, there’s no loss of position or need to “touch off” the tool. Just remove the old insert, stick in a fresh one, and get to work.

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HOTBEST 15X Pocket Hole Jig Tool Kit Woodworking Guide Oblique Drill Angle Hole Locator Woodworking Angle Drilling Guide Angle Tool Kit Pocket Hole Screw Jig.

3rd part of Multi-Series Articles "Circular Interpolation Concepts & Programming". This part briefly explains how cnc machinists can Calculate and Program ...

Our FREE Insert Identification Guide includes comprehensive reference tables and examples that list what each place of an insert name represents and identifies, including:

The Mill 16™ series is a perfect fit for most cast iron face milling requirements with high feed rates to boost productivity and reduce cycle time.

Kennametal's KCS10B turning grade provides easy wear identification. It's ideal for medium machining and finishing operations of nickel-based (S3), cobalt-based (S2), and iron-based (S1) high-temperature alloys.  The extremely hard, wear-resistant carbide substrate allows for longer tool life, while the ultra-fine-grain carbide substrate and smoother coating reduces friction.

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