Poisson burrs form on the entrance side of the machining process, where the tool first touches the surface and deforms the material. The material is pushed away at the edge in a perpendicular direction.

Burr Type Image Source: Burr formation and its treatments–A review, The International Journal of Advanced Manufacturing Technology March 2020

Tear burrs form when material is torn away from the part being worked as opposed to cut away, leaving material behind. You’re most likely to see tear burrs from a punching method.

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All of these benefits allow your organization to meet today’s production demands and improve your company’s reputation for consistent and reliable quality.

This process produces both Poisson and Rollover burrs. It produces small burrs on entrance (Poisson) and large burrs on the exit side (Rollover).

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Burrs have been thorns in metalworkers’ sides since ancient times. Yet, just as the technologies used to craft and manufacture components have advanced, so have the technologies used to remove burrs. In fact, they’ve advanced leaps and bounds in just the past decade. Manufacturers today shouldn’t use yesterday’s assumptions about deburring considering today’s technologies.

Also known as cut-off or breakoff burrs, these burrs are left behind when a cut piece breaks away from the part being worked. You’re most likely to see breakout burrs from “saw cuts and automatic screw machine parts.”

This process will produce both small and large horizontal burrs. The small burrs generated are Poisson burrs and the large are Rollover burrs.

For instance, Xebec automated deburring tools are capable of deburring a broad range of materials and burr types. However, they have limits. The ideal target burr size for a Xebec surface brush is 0.008” burr root thickness or less, and our tools cannot deburr pushed materials. However, you can adjust your processes to form more workable burrs for automated deburring.

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This process produces both Poisson and Rollover burrs. Small vertical burrs form on the hole entrance (Poisson) and large vertical burrs form on the exit side (Rollover).

Every manufacturer and industry used to define burrs in their own way, so manufacturers and engineers began to develop such a standard for classifying burrs. This standard was quickly adopted and the result is the following five classifications:

For example, during face milling, horizontal burrs can be generated. As the tools begins the face milling process on the entrance side, the resulting horizontal burrs are small and are known as Poisson burrs. As the tool works on the exit side, the resulting burrs are large and known as Rollover burrs. The burr size also depends on the angle the tool meets the edge. The more obtuse an edge, the smaller the burr.

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Rollover burrs (or exit burrs) form on the exit side of the machining process as the material rolls with the tool, is pushed over an edge and is retained. The thickness of these burrs will depend on the depth of cut.

With today’s technologies like Xebec ceramic fiber brushes, you can reduce how much of a nuisance burrs are in the first place. You can control how burrs are formed during the machining process, making them easier to remove. This will reduce the deburring time required and broaden your options for deburring methods.

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This process will produce both Poisson and Rollover burrs. Small horizontal burrs (Poisson) form on the entrance side and large horizontal burrs form on the exit side (Rollover).

Burrs are formed during processes such as face milling and drilling by the tool angle as it works on the part. The size and type of the burr and its direction will depend on the machine and process used.

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Class 5 – also known as “extruded burrs”, which are not actually burrs, but a deformation of the extruded material produced by drilling.

Additive manufacturing, also known as 3D printing, is the process of creating a part by building it one layer at a time. It is the opposite of subtractive manufacturing (such as CNC machining), in which a part is created by removing material from a solid block. 3D printing doesn’t create as many burrs as CNC machining and can often eliminate 25 to 35 percent of the deburring that manufacturers see in CNC machines. However, deburring is still needed and a high-quality finish is still required.

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This is a worthwhile upgrade for most manufacturers. Automating deburring and finishing drastically improves quality, speed and reliability. At Xebec, our application specialists can help you make critical process changes that allow you to automate deburring and reap its many benefits. The first step is understanding what types of burrs you’re working with now. Then, you can determine the best approach to optimizing them.

A thermal burr is typically known as slag or dross and occurs during plasma or laser cutting. In laser cutting, the quality of cut is determined by how the laser beam, assist gas, and material interact. Dross or slag can be caused by using overused consumables such as worn cutting tips. Cutting the piece too fast can also generate top dross.

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Thermal burrs form during thermal processes such as welding, molding and laser cutting. They’re also known as slags or spatters.

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Manufacturers have many options when it comes to deburring solutions. However, few deburring brushes and tools compare to the efficiency and quality you can achieve by automating deburring with Xebec ceramic fiber tools that last much longer than competitive options. Some of the most common deburring tools and their downsides include:

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If you’re looking to improve your pre-deburring process to enable automated deburring and finishing, reach out to discuss your current conditions with one of our experts.

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However, each of these options comes with setbacks when removing burrs or providing a reliable consistent finish. They often result in more scrap and rework, and they need to be replaced with greater frequency.

It can be well worth adjusting your processes to allow for automated deburring with Xebec Deburring Technologies. Improving deburring processes with Xebec deburring tools can help you realize:

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