What are Diamond & CBN Grinding Wheels?
Diamond and CBN (Cubic Boron Nitride) grinding wheels stand at the forefront of industrial grinding, engineered for shaping the hardest materials with precision. These wheels integrate either diamond or CBN crystals, firmly anchored to a robust metal core, offering unmatched hardness and wear resistance. Their adaptability in grinding a multitude of substances makes them indispensable across various sectors.
These wheels come in a spectrum of configurations, empowering users to select the perfect grit size to correspond with the material's hardness, thus achieving maximum cutting efficiency and exceptional finishes. Diamond wheels are the go-to for machining carbide, whereas CBN wheels are the choice for steelwork. Beyond their resilience, these grinding tools are critical in producing medical and dental tools, automotive parts, and aerospace components, where accuracy and durability are critical. Conquering Tough Materials: Diamond vs. CBN Grinding Wheels
The titans of toolmaking, diamond, and CBN grinding wheels, stand tall when shaping the most stubborn materials. But which one reigns supreme for your project? Let's delve into their distinct strengths and weaknesses to help you choose the champion for your grinding needs.
Grinding Battlefield:
The best choice depends on your specific materials and budget. If you're unsure, consult a grinding wheel specialist. They'll help you find the perfect tool to conquer your toughest grinding challenges!
Taiwan Diamond Tools Expert - Besdia (Best Diamond Industrial)![]()
Best Diamond Industrial Co., Ltd. provides top-tier diamond and CBN (Cubic Boron Nitride) grinding wheels, designed to handle the hardest materials with ease. Our grinding wheels work with carbide tips, precious gemstones, concrete, and more, offering various shapes to fit your needs.
We offer a selection of grit sizes to match the material hardness and ensure optimal grinding efficiency. Diamond grinding wheels are ideal for carbide materials, with long-lasting precision, while our CBN wheels excel at grinding steel. Our grinding wheels are durable, precise, and versatile. They are essential for making ceramic and metallic medical and dental products, finishing ceramic automotive parts, and meeting the high standards for aerospace and flight control components. At Best Diamond Industrial Co., Ltd., we customize high-quality diamond and CBN grinding wheels to meet your specific requirements. Contact us to find out how our products can improve your manufacturing processes.
Reference : Besdia (Best Diamond Industrial)
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Hydraulic shearing machines are a versatile tool that can be used to cut a variety of materials, including metal, plastic, and wood. They are an essential piece of equipment for any business that needs to cut sheet metal, pipe, or other materials to size. When choosing a hydraulic shearing machine, there are a few key factors to consider:
Once you have considered these factors, you can start shopping for a hydraulic shearing machine. There are many different manufacturers and models available, so it is important to do your research to find the right machine for your needs. Hydraulic shearing machines are a valuable asset for any business that needs to cut sheet metal, pipe, or other materials to size. By carefully considering your needs and choosing the right machine, you can ensure that you get the most out of your investment. Written by Google Bard
![]() If it’s been a while since you’ve taken a look at CNC Swiss type automatic lathes (screw machines), you might want to check them out. These days, they’re more powerful than ever. They still have the fast cycle times and flexibility that have made them the standard in many precision, high production applications. But now even more tools and more options are available, and sophisticated controls help streamline the machining process. Always preferred for long, slender turned parts, Swiss machines are now widely used for small, complex parts — even pieces that have no turned surfaces at all. “If the part is 1.25″ [diameter] or under, it can most likely be produced on one machine and dropped complete,” said Brian Such, customer support group manager at Marubeni Citizen-Cincom, Inc., Elk Grove Village, Ill. How Swiss Works In a conventional lathe that has a fixed headstock, the workpiece is held in a chuck or collet and extends into the machine enclosure as a cantilever or can be supported on the end by the tailstock. What distinguishes a Swiss machine from other types is that its headstock moves. Bar stock passes through a chucking collet in the headstock, which clamps onto it. The bar emerges into the tooling area through a guide bushing, which locates the bar radially during machining. The headstock moves precisely back and forth in the z-direction, taking the bar with it. The turning tools, carried on gang slides (see machine photos), contact the bar very close to the guide bushing, usually within 1 mm to 3 mm. The motion of the bar provides the feed for this cutting action. Gang slides carry holders for fixed single-point or other tools, and may support live tooling. Many machines have a secondary spindle, back working tool stations, and sometimes one or more turrets that carry more tools, as well. Deflection Correction The purpose of supporting the workpiece with the guide bushing is to maintain precision throughout the machining of the workpiece. A physical object subjected to a force will deflect. On a conventional lathe, if the cutting forces cause too great a deflection the accuracy of the cut will suffer. A widely accepted rule of thumb says that on a conventional lathe when you turn parts with a length-to-diameter ratio of greater than 3:1, you should use a tailstock to prevent excessive deflection. For a ratio greater than 6:1, you would use a steady rest or follow rest to support the middle of the part. If you hold a workpiece securely at one end and push sideways on the unsupported end, the workpiece bends a certain amount. Push with the same force on a longer workpiece and it will bend more. In fact, the deflection for a given force increases as the cube of distance from the support to the force is twice as long with eight times the deflection. So if you apply a certain side force to the end of a 2″ part, and it deflects 0.001″, the same force applied at the end of a 4″ part of the same diameter will cause 0.008″ deflection. With a Swiss machine, the guide bushing supports the workpiece so close to the tools that the deflection due to the cutting forces is essentially zero. As a result, you can take heavy cuts and still maintain precise dimensions on the part. Better, Faster The advantages of CNC Swiss machines come from both the guide bushing, and the geometry and mechanics in the tool zone. • Depending on the machine, there may be room for 20 tools or more in the tool zone. Some higher-end machines have tool changers available. • Since the machines are relatively compact and the tools do not have to move very far, the chip-to-chip time from one tool to the next can be one second or less. • Often a single heavy cut removes all the necessary material. • Surface finish can be excellent and often eliminates the need for grinding. • A machine with a sub-spindle allows working on the back side of the part. • A Swiss machine can make complex parts using simultaneous operations, and may be able to have as many as three or four tools cutting at the same time. • In most cases secondary operations are eliminated, since a Swiss machine can mill, drill, ream, saw and do other operations within the machine. The part comes off the machine ready to ship. • Setup times may be relatively short. If you are machining a family of parts it could take 10 minutes to change from one to another. Other changeovers might take an hour or two. Since your Swiss machine may have 20 or more tools mounted, you can plan your tooling so that all the tools you need for several jobs stay right in the machine. • Once the machine is set up and the bar stock placed in the bar loader, your Swiss machine can run for hours unattended. ![]() Source: A Little History Swiss CNC automatics may be the very latest thing, but their mechanical predecessors have been around for more than a hundred years. In the 1800s, as increased industrialization took place, the need grew tremendously for interchangeable parts made with some degree of precision, and inventors developed technologies to help meet that need. The collet chuck was patented in the 1870s. This allowed use of bar stock and, not long after, the first moving headstock machine was developed in Switzerland. These machines became known as Swiss-type screw machines and were used mainly in the watch making industry. In the 1960s Swiss machines came into more widespread use, and in the 1970s CNC versions became available. Over time tooling-area options came to include turrets and gang slides, live tooling and secondary spindles. By the 1980s Swiss machines were used extensively in making parts for the semiconductor and electronics industries. Improvements in design, servomotors and controls during the 1990s made for stronger, faster, more sophisticated machines to make parts for medical and aerospace applications, in addition to general machining work. Like everything else, CNC Swiss type machines vary in cost, depending on the manufacturer, model and selected options. Here are some examples of prices from a number of different manufacturers. • Expect to pay around $170,000 for a mid-range 20 mm (about 3/4″) unit. • A simpler 16 mm (about 5/8″) unit will be about $70,000. • On the higher end, a unit with a package of options for a specific application, will run in the “under $300,000” range. You can’t read your future, of course, so you’ll have to make your best guess as to how you’re going to use your new Swiss machine. Spend a little more, and you can get a machine that has more tooling options. Swiss Is Different If you have been working exclusively with lathes and purchase a Swiss machine, you’ll find you’re processing parts differently in order to take advantage of the machine’s capabilities. “On a Swiss type machine, you machine apart from one end to another,” said Dan Murphy, regional sales manager at REM Sales LLC, Hoffman Estates, Ill., importer of Tsugami products. “If you have a groove halfway down, you turn to the groove, make the groove, then turn the rest.” Because the work is supported right next to the tool, you can safely take heavy cuts on a Swiss machine, where on a lathe you’d take multiple cuts and try to keep cutting forces low enough to prevent too much deflection. On a Swiss machine, often you will do all cutting in a single pass without any backtracking. Scrap can become an issue, especially for pricey materials. Because of the Swiss machine’s geometry, for every piece of bar you’ll have a remnant of 6″ to 12″. If you are running extremely expensive material, you could buy 10-foot bar stock and join a section of less expensive material at the end of each bar. On a Swiss machine, the dimensional quality of your parts will, to some extent, depend on the straightness and roundness of the bar you use. “Swiss is as good as your bar stock. If the bar is bent, you get bent. If the bar out of round, you get out of round,” said Daniel Dean, national sales manager at REM Sales. “[The part will be] about 50 percent better than the quality of the bar itself,” said Such. “For example, if the bar stock is 0.001” TIR roundness, a Swiss machine can cut that part to about 0.0005″ TIR.” Do you need to use straightened, centerless-ground bar stock? Some manufacturers say yes, you always should. Others recommend it, but don’t require it. Brian Such suggested using ground stock only when needed to meet the tolerances on the print. In his experience, he said, “many Swiss users say they generally run 60 percent non-ground bar and about 40 percent ground bar stock.” Adding Swiss to the Mix If you’re running small, complex parts on your CNC lathes, you might be better served by running them on a Swiss machine, freeing up the lathes for larger, more appropriate parts. “When we walk around somebody’s shop,” said Such, “we [might look at] 10 machines. Usually on seven of them are parts that could be made on Swiss machines. Often you could run all those parts on two Swiss.” Many new Swiss users already run multi-function fixed head lathes that mill and drill in addition to turning, so they have an idea about how to use a machine with multiple capabilities, said Mike Tyler, president of Tyler Machine Tool Company, Inc., Seabrook N.H., the North American importer of Nexturn Swiss CNC machines. Also, the controls on the Swiss machines are familiar to most users, he said, and offline programming software helps users generate programs tailored to Swiss operation. New users are “amazed at the productivity of the Swiss machines and the consistency of the parts,” said Tyler, as well as the high-quality surface finish. Depending on the sizes of parts you’re making and the mix of your jobs, acquiring a Swiss machine or two could reduce cycle times and eliminate secondaries for parts on the smaller end of your range, and at the same time free up your other equipment to produce larger parts. Source: Today's Machining World
The most advanced, reliable materials are necessary to ensure optimal safety, longevity, and strength in aerospace demanding applications.
Aerospace materials must be lightweight to allow for optimal aerodynamics; strong to ensure the safety of pilots and passengers and to withstand the physical forces of flying; and heat resistant to ensure structural changes are kept to a minimum during the sudden and extreme temperature fluctuations that occur at both high-speed and high-altitude flight. Honeycomb structure can effectively meet all of the above requirements. What is a honeycomb structure?![]()
Honeycomb structures are natural or man-made structures that have the geometry of a honeycomb to allow the minimization of the amount of used material to reach minimal weight and minimal material cost. The geometry of honeycomb structures can vary widely but the common feature of all such structures is an array of hollow cells formed between thin vertical walls. The cells are often columnar and hexagonal in shape. A honeycomb shaped structure provides a material with minimal density and relative high out-of-plane compression properties and out-of-plane shear properties.
Man-made honeycomb structural materials are commonly made by layering a honeycomb material between two thin layers that provide strength in tension. This forms a plate-like assembly. Honeycomb materials are widely used where flat or slightly curved surfaces are needed and their high strength is valuable. They are widely used in the aerospace industry for this reason, and honeycomb materials in aluminium, fibreglass and advanced composite materials have been featured in aircraft and rockets since the 1950s. They can also be found in many other fields, from packaging materials in the form of paper-based honeycomb cardboard, to sporting goods like skis and snowboards. The main use of honeycomb is in structural applications. The standard hexagonal honeycomb is the basic and most common cellular honeycomb configuration. Industrial Applications of Honeycomb structures
Honeycomb structures, inspired from bee honeycombs, had found widespread applications in various fields, including architecture, transportation, aerospace, mechanical engineering, chemical engineering, nano-fabrication, and recently bio-medicine. Understanding the design principles underlying the creation of honeycomb structures and the related scientific discovery and technology development is critical for engineering bio-inspired materials and devices designed based on honeycomb structures for a wide range of practical applications.
Although honeycomb composites are not quite as light as other materials, such as standard laminates (depending on the number of layers), they offer other unique benefits. Honeycomb can be as much as 40 times stronger than laminates in certain scenarios, for instance, and often offers better weight-to-strength ratios. Also, load carry and load transference are much greater in honeycomb than in laminate. Aluminum honeycomb is used in various aerospace applications and is becoming the go-to material for critical substructures in rockets, aircraft, and jet engines, and propellers, as well as similar non-aerospace structures, such as wind turbine blades. In less sensitive applications, aluminum honeycomb is also used in aircraft heating, ventilation, and air conditioning systems. Learn more about Honeycomb Structure Machining
For over two decades, Taiwan Vision Wide has been in the development and production of high accuracy double column machines. In order to meet the high-precision processing needs of the aerospace industry, we have launched UC Series Ultrasonic Machining Center for aerospace honeycomb structure processing.
To learn more about aerospace honeycomb machining and how VW can help with your aerospace applications, just contact us today.
Offset printing, also called offset lithography, is a method of mass-production printing in which the images on metal plates are transferred (offset) to rubber blankets or rollers and then to the print media. The print media, usually paper, does not come into direct contact with the metal plates. This prolongs the life of the plates. In addition, the flexible rubber conforms readily to the print media surface, allowing the process to be used effectively on rough-surfaced media such as canvas, cloth or wood. The main advantage of offset printing is its high and consistent image quality. The process can be used for small, medium or high-volume jobs. There are two types of offset printing machines in common use for publication today. In sheet-fed offset printing, individual pages of paper are fed into the machine. The pages can be pre-cut to the final publication size or trimmed after printing. In web offset printing , larger, higher-speed machines are used. These are fed with large rolls of paper and the individual pages are separated and trimmed afterwards. Sheet-fed offset printing is popular for small and medium-sized fixed jobs such as limited-edition books. Web offset printing is more cost-effective for high-volume publications whose content changes often, such as metropolitan newspapers. Recommended Manufacturer![]() SMOOTH MACHINERY , a famous printing machine manufacturer based at Taiwan, has been in the printing industry for almost 50 years. All Offset Lithography Machines applied with CE certification and ISO-9001 registrations. Smooth Machinery is able to offer you an economical and quality printing solutions to meet diversed printing needs. Visit us to get more info. Source: http://whatis.techtarget.com/definition/offset-printing-offset-lithography |
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