​Cross-hole deburring is a common process in industries like aerospace, automotive, and hydraulics. Burrs in cross-drilled holes can obstruct fluid flow, compromise dimensional tolerances, and pose safety risks. Traditional manual deburring methods are often labor-intensive and inconsistent, leading manufacturers to seek more efficient solutions.

The Flex-Hone® tool by Brush Research Manufacturing (BRM) offers an effective alternative. This flexible honing tool is designed to remove burrs from cross-drilled holes while simultaneously improving surface finish. Its self-centering and self-aligning features make it adaptable to various bore sizes, and it can be used with CNC machines, lathes, mills, and handheld drills. The tool's low-pressure, low-temperature abrading process ensures that the base metal's structure remains intact, preserving dimensional tolerances.​

For optimal results, it's recommended to use a slightly oversized Flex-Hone® tool relative to the bore diameter. This allows the tool to effectively reach and deburr the intersections of cross-drilled holes. It's also important to use a high-quality honing oil, such as BRM's Flex-Hone® oil which helps prevent tool loading and maintains cutting efficiency. A recommended practice is to rotate the tool clockwise during initial strokes, then reverse the spindle and continue in the opposite direction. This technique promotes a symmetrical deburring pattern and prevents burrs from folding back into the cross-hole.​

Implementing the Flex-Hone® tool in automated processes enhances consistency and reduces cycle times. By integrating this tool into existing CNC setups, shops can achieve high-quality deburring without the need for additional specialized equipment. This approach not only improves product quality but also contributes to cost savings and increased production efficiency.​

Check out this demonstration of the Flex-Hone® tool in action in the below video.

For more information or a demonstration in your shop contact us here at JMI CNC & Automation!

​JMI CNC Tooling & Automation is proud to announce the participation of our esteemed principals at IMTS 2024 in Chicago.

​This premier manufacturing technology show, which runs from September 9-14, 2024, will feature innovations and products from leading companies represented by JMI, including Achteck, BRM Brush Research, Blue Photon Workholding, GMN Spindles, Jergens Workholding, MAQ Devibe Tooling, Pratt Burnerd America, and Widen Cutting Tools.

These industry leaders will showcase their latest advancements and solutions, highlighting their commitment to excellence and innovation in the CNC tooling and automation sectors.

Achteck is one of the world's fast growing manufacturers of carbide cutting tools, friction materials, wear resistant items, and civil engineering products.

Brush Research Manufacturing is a leading American manufacturer of premium quality power brushes, twisted-in-wire brushes, and the BRM Flex-Hone Tool. Focused on creating solutions for metal surface finishing, deburring, cleaning and polishing, Brush Research sells products domestically as well as exports products to a global network of distributors.

Blue Photon’s patented workholding products are a manufacturer’s solution to hold parts for tight-tolerance machining and inspection. Blue Photon designs and manufacturers grip technology for complex-shaped, and hard-to-hold parts. Blue Photon grippers are easily installed into fixtures to grip and support the part without the use of mechanical clamps.

GMN USA is the North American Spindle Sales and Service Center for GMN Paul Mueller Industries, a world-wide supplier of high-speed machine tool spindles, high precision bearings, clutches and seals

Jergens Inc is a global manufacturing leader of CNC machining custom workholding products. Today, you'll find their vises, clamps & fixturing systems, tooling components, at work in just about every segment of the metalcutting industry on every continent. And our innovative engineered solutions like the patented Ball Lock®️ Mounting System and Fixture-Pro®️ 5-axis workholding have changed the way manufacturers worldwide think about metalworking productivity.

Pratt Burnerd America is in the business of supplying quality workholding products for CNC Lathes and turning machines throughout North America. They have one of the largest varieties of rotary workholding products in the world, with Power Chucks, Manual Chucks, Collet Chucks, Collets, Special Chucks, Rotating Cylinders, and Workholding Accessories. 

by Bernard Martin

The International Manufacturing Technology Show (IMTS) 2024 is just around the corner, and JMI CNC Tooling & Automation is excited to highlight the exceptional innovations our represented companies will showcase at the event.

Taking place from September 9-14 in Chicago, IMTS is the premier platform for exploring the latest advancements in manufacturing technology. As you plan your visit, make sure to stop by the booths of the following JMI-represented companies.

Here's a sneak peek at what you can expect to learn about in each to these booths!

At Achteck America Inc.'s booth you can learn about their broad range range of cutting tools.

Achteck offers both indexable and solid carbide tools designed for turning, milling, drilling, and grooving across materials such as steel, stainless steel, heat-resistant alloys, and more.

With an extensive inventory maintained in Michigan, Achteck stands out for their competitive pricing and ability to meet the needs of both general-purpose and specialized machining tasks, including Swiss tool, heavy-duty turning, and railway wheel turning. Their innovative grooving inserts, milling cutters, and solid carbide drills are perfect for those looking to enhance their productivity and precision in manufacturing operations.

• West Building, Level 3 — 431258 — Tooling & Workholding

At AB Tools booth at IMTS 2024 you can learn about top-quality, USA-made cutting tools that have been trusted by professionals since 1977.

As the home of the renowned Shear Hog®, AB Tools specializes in a range of innovative solutions including indexable dovetails, O-ring grooving tools, keyseat cutters, and precision firearms tooling. With an impressive turnaround time of just 5-6 workdays for custom specials, AB Tools ensures you get exactly what you need, when you need it.

• West Building, Level 3 — 432264 — Tooling & Workholding

Visit Blue Photon’s booth at IMTS 2024 to learn about their unique adhesive workholding solutions, designed to hold parts securely without the distortion that comes from traditional clamping.

Whether you're working with hard-to-hold, easily distorted, or brittle parts, Blue Photon’s technology is the perfect fit, especially for applications in milling, turning, grinding, and more. Their system is ideal for a wide range of industries, including aerospace, medical machining, and optics. Plus, with the ability to integrate zero-point systems, you can automate your workholding processes with unmatched precision.

• West Building, Level 3 — 431446 — Tooling & Workholding

At BRM - Brush Research Manufacturing Co., Inc. at IMTS 2024 to explore their industry-leading solutions for improving surface finishes and deburring.

Known for their Flex-Hone Tools and abrasive brushes, BRM's products are essential for achieving superior surface quality in a wide range of applications. Whether you're working with metals, composites, or other materials, BRM offers tools that enhance performance and extend the life of your components

• North Building, Level 3 — 237148 — Abrasive Machining/Sawing/Finishing

Be sure to visit GMN USA’s booth at IMTS 2024 to learn about their high-performance spindle technology firsthand. Known for their precision and reliability, GMN spindles are designed to meet the demands of high-speed machining across various industries.

Whether you’re involved in aerospace, automotive, or any other field requiring top-notch machining capabilities, GMN’s products can enhance your production efficiency and quality.

• North Building, Level 3 — 237065 — Abrasive Machining/Sawing/Finishing

Visit Jergens' booth at IMTS 2024 to check out their 5 axis machining workholding solutions designed to boost productivity and precision in your machining operations. Jergens will be showcasing their 5CV 130mm self-centering vise, perfect for high-accuracy clamping and ideal for various machining applications.
Additionally, check out their Tooling Columns, which provide robust and flexible workholding options to maximize machine output. Don’t miss the opportunity to get a demo on the Jergens Ball Lock® Mounting System, a quick-change solution that drastically reduces setup times, allowing for fast and repeatable fixture changes.

• West Building, Level 3 — 432154 — Tooling & Workholding

Visit MASA Tool's booth at IMTS 2024 to discover the innovative Microconic™ system, specifically designed for precision workholding in CNC Swiss machining.

This cutting-edge system is ideal for holding workpieces ranging from Ø0.15mm to 10mm (Ø0.006" to 0.390") in any machine with a collet-type chuck.

The Microconic™ system consists of two major components: the Microconic™ cartridge, which replaces standard collets such as 5C, TF15, TF16, TF20, TF25, or TF37 in your CNC machine spindle, and the Microconic™ collet, which fits seamlessly into the Microconic™ cartridge. This setup ensures micron-level accuracy and repeatability, making it perfect for industries that require extreme precision, such as medical devices, aerospace, and watchmaking.

• West Building, Level 3 — 432163 — Tooling & Workholding

Visit Pratt Burnerd America's booth at IMTS 2024 to explore their high-quality lathe chucks, known for delivering unmatched precision and durability. As a trusted name in workholding solutions, Pratt Burnerd offers a wide range of products, including manual, power, and special application chucks that are designed to enhance the performance of your CNC machines. Whether you’re looking for innovative rotary workholding solutions for standard or custom applications, Pratt Burnerd has the expertise and products to meet your needs.

• West Building, Level 3 — 431384 — Tooling & Workholding

Visit Tapmatic’s booth at IMTS 2024 to explore their extensive range of innovative tapping solutions and toolholders designed to optimize your machining processes.

Tapmatic is best known for their high-performance tapping heads, which are engineered to reduce cycle times, enhance thread quality, and significantly extend tool life. But that's not all—Tapmatic also offers cutting-edge tools like the Scribewriter for precise marking, the DeBurr-Z tool for efficient deburring, and the TapWriter Dot Peen Marking tool for robust and permanent part marking. Whether you're in need of tapping solutions or advanced marking and deburring tools, Tapmatic has the expertise and products to elevate your production capabilities.

• West Building, Level 3 — 431246 — Tooling & Workholding

Haskel Inc. (Burbank, CA) manufactures a variety of compressed air driven pumps for use in a cross-section of industrial applications. The company experienced quality control issues with the manufacture of its miniaturized models. Burrs are created in the airdrive system's aluminum sleeve, which must meet specification of 16 micro-finish.

To produce the sleeve, which is about "2 long, Haskel machines the part from 13/16" diameter aluminum bar stock. The sleeve is then put on a conventional drilling machine, where an operator drills two series of holes around the sleeve. One series has 1/8" holes, while the other has 3/32" holes.

During the drilling process, burrs are produced along the inside diameter of the sleeve. If these burrs remain, the pump can be damaged. For instance, a spool slides back and forth like a piston with O-rings inside the sleeve to open and close the holes. During this cycling action, a loose burr can cause excessive wear on the O-rings.

After drilling, the sleeve is taken to a workstation where an operator uses ano-burr tool to put an edge break on each one ​he holes. Even after this step, very small burrs still remain lodged inside the sleeve.
​
In the past, Haskel sent the sleeves to an outside vendor where the minute burrs were removed in an entirely manual operation - a costly and time consuming process. After the deburring, the sleeves were then returned to the plant for as- sembly.

A new deburring/finishing system called Flex-Hone@ offers a solution to eliminate small burrs. Manufactured by Brush Research Manufacturing Co., Inc. the system consists of a resilient-based hone with abrasive laminated to the ends of bigh-density nylon fila- ments. At Haskel, the 1 mm diameter, 180-grit silicon carbide hone is placed in a standard drill chuck. The system has resulted in a smoother, more efficient operation. After the preliminary deburring step, the sleeves are taken to the deburring station.

At this point, the operator places a pan of kerosene beneath the hone and loads the pan with the sleeves, which become lubricated. At the same time, the drill motor is activated, rotating the hone at about 100 pm. The operator then lifts a sleeve to the revolving hone and makes five or six passes. Inside the sleeve, a spring-like action causes the tool to knock out any burrs remaining in the holes.The parts are then ready for burnishing.

With an annual production of 10,000 - 20,000 sleeves, the company uses two or three hones per standardorder of2,500 parts. For Haskel, the Flex-Hone® tool provides better quality control and cost savings, paying back the cost of the system many times over.
The company now saves 40% of the total cost of producing the part as opposed to jobbing the work out. ​

If you would like more information, please contact one of the people on our team to test a Flexhone.