CornerCutter Tool

Our corner rounding machines offer a variety of benefits that make them the perfect addition to your workstation. With the ability to round the corners on materials such as business cards, postcards, and signs, these machines provide a professional touch to your finished products.

We offer a variety of corner rounder models to cater to different needs and preferences. Whether you need a desk-top corner cutter for small-scale projects, or a heavy-duty bench-top corner cutter for more demanding tasks, we have the perfect machine for you. We also provide floor-model corner cutters for those with higher production levels.

Another characteristic of martensitic steels is their high yield strength, which is associated with improved crash performance. In a laboratory environment, crash behavior is assessed with 3-point bending moments. A studyS-8 determined there was a correlation between sheet steel yield strength and the 3-point bending deformation of hat shaped parts. Based on a comparison of yield strength, Figure 8 shows that CR1200Y1470T-MS has similar performance to hot stamped PHS-CR1800T-MB and PHS-CR1900T-MB at the same thickness and exceeds the frequently used PHS-CR1500T-MB. For this reason, there may be the potential to reduce costs and even weight with a cold stamping approach, providing appropriate press, process, and die designs are used.

Highlighting product forms achievable in cold stamping, an automotive steel Product Applications Laboratory formed a Roof Center Reinforcement from 1.4 mm CR1200Y1470T-MS using conventional cold stamping rather than roll forming, Figure 6. Using cold stamping allows for the flexibility of considering different strategies when die processing which may result in reduced springback or incorporating part features not achievable with roll forming.

Figure 3 shows MS950/1200 compared to HSLA. Engineering and true stress-strain curves for MS steel grades are presented in Figures 4 and 5.

CornerRounder for Metal Signs

Unbalanced stresses in stamped parts lead to several types of shape fixability issues collectively called springback. In hat shape wall sections, shape fixing beads sometimes referred to as stake beads (see Post Stretch information at this link) mitigate sidewall curl by imparting a tensile stress state on both the top and bottom sheet surfaces and increasing the rigidity. Springback control to limit flexing down the length of longitudinally curved parts requires a different technique. Here, the root cause is the stress difference between the tensile stress at the punch top and the compressive stress at the flange at bottom dead center of the press stroke. Figure 10 presents schematics of the stress distribution when the punch is located at bottom dead center of the press stroke, and the shape fixability issue after load removal.

Beijing officeC413 Office Building - Beijing Lufthansa Center - 50 Liangmaqiao Road Chaoyang District - Beijing 100125 - China T: +86 10 6464 6733 - F: +86 10 6468 0728 - E: china@worldsteel.org

PaperCornerRounder

With our high-quality corner rounders and the correct materials, you can achieve professional-quality corners that will impress your clients and customers. So browse our selection today and find the perfect corner rounder for your cutting and trimming needs.

CornerCutter for laminated cards

Mechanical Properties of Carbon Fibre Composite Materials, Fibre / Epoxy resin (120°C Cure) Fibres @ 0° (UD), 0/90° (fabric) to loading axis, Dry, Room ...

In addition to being produced directly at the steel mill, a martensitic microstructure also can be developed during the hot stamping of press hardening steels.

Looking for a high-productivity, convenient, and efficient way to round the corners on your materials? Look no further than our corner rounding machines.

Having trouble dealing with sharp corners on your business cards and other materials? You have come to the right place! Whitakers Brothers has a large collection of corner rounding machines that are perfect for your needs. Our machines are designed to cut corners on various materials such as paper, card stock, laminated materials, and plastics.

Figure 8: Effect of Yield Strength on Bending Moment. The right image shows the typical yield strength range of CR1030Y1300T-MS and CR1200Y1470T-MS as well as typical yield strength values of several Press Hardened Steels.S-8

One common type of corner rounding machine is the manual corner rounding machine. These machines are perfect for small-scale operations, and provide precise and consistent corner rounding. With their adjustable cutting depth and selection of corner cutting dies, you can easily achieve professional-quality corners on materials such as business cards, postcards, and signs.

Here at Whitaker Brothers, we understand the importance of having the correct tools for your cutting and trimming needs. When it comes to achieving professional-quality corners, our corner-rounder machines are a must-have addition to your arsenal. We offer a large collection of corner rounding machines to cater to different preferences and requirements.

Whitaker Brothers prides itself in being the leader in an age of competitive pricing, while still maintaining the business relationship philosophies that come with over 75 years in our industry. Questions? Call us at (800) 243-9226.

Without effective countermeasures, springback increases with part strength. Related to this is the springback difference between coils having strength at the lowest and highest ends of the acceptable property range. This can lead to substantial differences in springback between coils completely within specification. However, after using effective countermeasures such as Stress Reverse Forming™ described in Citation T-29, springback differences between coils are minimized, which leads to increased dimensional accuracy and more consistent stamping performance. This phenomenon is shown schematically in Figure 12. Furthermore, unlike conventional stamping approaches, the amount of springback in parts made with this approach does not increase with steel strength.

Martensitic steel grades provide a cold formed alternative to hot formed press hardening steels. Not all product shapes can be cold formed. For those shapes where forming at ambient temperatures is possible, design and process strategies must address the springback which comes with the high strength levels, as well as eliminate the risk of delayed fracture. The potential benefits associated with cold forming include lower energy costs, reduced carbon footprint, and improved cycle times compared with hot forming processes.

Upgrade your workspace with a corner rounding machine and experience the speedy and consistent results it brings to your projects. Shop with us today and enjoy the benefits of convenient, efficient, and versatile corner rounding machines.

Choose from our selection of combined counterbores and drills, including inch size drill-point counterbores, metric size drill-point counterbores, and more.

DIJET MILLING INSERTS. Carbide inserts are replaceable and usually indexable bits of cemented carbide used in machining steels, cast iron, high temperature ...

Whether you're running a small-scale print shop operation or dealing with high production levels, we have the perfect round corner machine for you. Choose from our electric, manual, and foot pedal-operated options to match your specific needs.

ElectricCornerRounder

Stress Reverse Forming™T-44 uses the principles of the Bauschinger Effect to reverse the direction of the forming stresses during a restrike forming process to achieve a final part closer to the targeted dimensions.T-29 Parts processed with this two-step approach are first over-formed to a smaller radius of curvature than the final part shape. Removing the part from the tool after this first forming step results in the stress distribution seen in the left image in Figure 10. The unique aspect of this approach comes from the second forming step where the tool shape forces the punch top into slight compression while the lower flange is put into slight tension. The tool shape used in this stage contains a slightly greater radius of curvature than the targeted part shape. As shown in Citation T-29, this process appears to be equally effective at all steel strengths.

For higher production levels and more heavy-duty tasks, we also offer electric corner rounding machines. These machines are designed for efficiency and convenience, and allow you to quickly and easily round the corners on a wide variety of materials. Equipped with powerful tabletop corner rounding capabilities, they guarantee smooth and flawless operation every time.

Some of the specifications describing uncoated cold rolled 1st Generation martensite steel (MS) are included below, with the grades typically listed in order of increasing minimum tensile strength. Different specifications may exist which describe hot or cold rolled, uncoated or coated, or steels of different strengths. Many automakers have proprietary specifications which encompass their requirements.

Figure 12: Left Image: Springback Differences Exist in Coils at the Low and High End of the Strength Specification; Right Image: Stress Reverse Forming™ Process Reduces Sensitivity to Springback (Images Adapted from Citation T-29)

A patented approach known as Stress Reverse Forming™T-44 improved dimensional accuracy in the second-generation Lexus NX (2021 start of production) center roof reinforcement, cold stamped from martensitic steel, CR1200Y1470T-MS.J-24 Figure 11 shows different views of this part.

Yes, corner rounding machines are safe to use when proper precautions are taken. It is important to read the user manual and follow safety guidelines provided by the manufacturer. Some machines come with a protective safety cover to prevent accidents and ensure operator safety.

CornerRounder Punch

For example, in H7/h6 (a commonly-used fit) H7 represents the tolerance range of the hole and h6 represents the tolerance range of the shaft. These codes ...

No matter the size or type of your business, Whitaker Brothers has the perfect corner rounding machine to meet your needs. Our machines are designed with quality components and advanced technology, and are durable and reliable. So why settle for sharp corners when you can have professional-quality corners with our selection of corner rounding machines? Upgrade your corner-cutting process today and experience the difference.

Corner rounding machines are commonly used for business cards, postcards, signs, promotional materials, and more. They are incredibly versatile, and can handle many materials, allowing you to achieve precise and professional-quality corners.

Consider the volume of corner rounding operations you require, the types of materials you will be working with, and your budget. If you have high-production corner rounding needs, a heavy-duty bench-top or floor-standing machine may be suitable, while a desktop machine may suffice for smaller-scale projects.

These steels are often subjected to post-quench tempering to improve ductility, so that extremely high strength levels can be achieved along with adequate ductility for certain forming processes like Roll Forming.

Don't settle for sharp corners any longer. Choose Whitaker Brothers' corner rounding paper cutter machines to achieve perfectly rounded corners with ease. Whether you are looking for the Akiles Diamond 5 or the Lassco Wizer, improve the look and feel of your materials and make a lasting impression on your clients. Shop now and experience the difference!

Aug 2, 2023 — Chip load refers to the thickness of the material removed by each cutting edge during a single rotation.

Figure 11: Left Image: Springback Differences Exist in Coils at the Low and High End of the Strength Specification; Right Image: Stress Reverse Forming™ Process Reduces Sensitivity to Springback (Images Adapted from Citation T-29)

To create MS steels, the austenite that exists during hot-rolling or annealing is transformed almost entirely to martensite during quenching on the run-out table or in the cooling section of the continuous annealing line. Adding carbon to MS steels increases hardenability and strengthens the martensite. Manganese, silicon, chromium, molybdenum, boron, vanadium, and nickel are also used in various combinations to increase hardenability.

by C Borges · 2023 · Cited by 6 — In this work, carbon fiber-reinforced polymer (CFRP) composite residues were incorporated into a poly(etheretherketone) (PEEK) matrix, as a strategy towards ...

Common standard materials used in corner rounders include stacks of paper, card stock, and lightweight plastic, such as PVC, or metal sheets. These materials are known for their flexibility and durability, and are ideal for achieving precise and professional-quality corners.

Figure 9 highlights this reinforcement, with its placement on the cross member and in the vehicle shown in red. The varying elevation of this part, combined with a non-uniform cross section at the outermost edges, help control springback, but makes roll forming significantly more challenging if that were the cold forming approach.

Our corner rounding machines are built to handle different stack sizes, ensuring smooth and efficient operation. With adjustable cutting depth and a selection of corner cutting dies, you can achieve professional-quality corners every time.

roundcornerpunch - heavy duty

Our corner rounders are designed to handle a wide range of materials, allowing you to achieve perfect corners on various projects. From business cards and postcards, to signs and promotional materials, our corner rounders can effortlessly round the corners on your desired materials.

Figure 7: Center Pillar Outer stamped at ambient temperature from a tailor welded blank containing 1470 MPa tensile strength martensitic steel.U-1

Cold stamping of martensitic steels is not limited to simpler shapes with gentle curvature. Shown in Figure 7 is a Center Pillar Outer, cold stamped using a tailor welded blank containing CR1200Y1470T-MS and CR320Y590T-DP as the upper and lower portion steels.U-1

Discover the versatility of mill drills, combining drill press precision with milling capabilities. These milling machines are ideal for light milling ...

When it comes to corner rounders, the choice of materials is important to achieving the best results. At Whitaker Brothers, we understand the importance of using standard materials that are compatible with these machines.

Heavy DutyCornerRounder

One of the key advantages of our round corner cutters is their versatility. Equipped with interchangeable dies, they allow you to achieve a wide range of corner shapes, which gives you the freedom to explore different design possibilities.

Recent years have seen some applications typically associated with press hardening steels transition to a cold stamped martensitic steel, CR1200Y1470T-MS. One such example is found in the third-generation Nissan B-segment hatchback (2020 start of production), which uses 1.2 mm thick CR1200Y1470T-MS as the material for the Second Cross Member Reinforcement.K-45

How are speeds and feeds different on the Bantam Tools Desktop Milling Machines compared to other CNC mills? ... If you speak with experienced machinists, you'll ...

Using the carbon equivalent formula Ceq=C+Si/30+Mn/20+2P+4S K-45, the newly developed martensitic grade has a carbon equivalent value of 0.28, which is lower than the 0.35 associated with the conventional PHS grade of comparable tensile strength,  22MnB5 (PHS 1500T). The lower carbon equivalent value is expected to translate into easier welding conditions.  Furthermore, conventional mechanical trimming and piercing equipment and techniques work with the cold formable martensitic grade, whereas parts formed from press hardening steels typically require laser trimming or other more costly approaches.  An evaluation of delayed fracture found no evidence of this failure mode.

Aug 25, 2018 — In short, yes. Machining titanium is often billed as the pinnacle of a machine tool's capabilities, but really it's less about the machine itself and more ...

Martensitic steels are characterized by a microstructure that is mostly all martensite, but possibly also containing small amounts of ferrite and/or bainite (Figure 1 and 2). Steels with a fully martensitic microstructure are associated with the highest tensile strength – grades with a tensile strength of 2000 MPa is commercially available, and higher strength levels are under development.

We offer different types of corner rounding machines to suit your preferences and production levels. Our manual machines are perfect for small-scale operations, while our electric, pneumatic, and hydraulic machines are suitable for high-production needs.

#606 American Standard HSS TMX Staggered Tooth Woodruff Keyseat Cutter, 3/4" Diameter, 3/16" Width, 1/2" Shank. TOOLMEX. 5728060. 5-728-060. 5-728-060.

Our corner rounding machines are equipped with quality components and protective safety covers to ensure reliable and safe operation.