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Posted on Jul 26, 2019
Bandsaws machines are sawing machinery designed for industrial metal-cutting use, such as for construction steels in fabrication shops and for bar stock in machine shops.
Bandsaws machines are sawing machinery designed for industrial metal-cutting use, such as for construction steels in fabrication shops and for bar stock in machine shops. Metal cutting bandsaw machines are available in both vertical and horizontal designs.
Typically, the speed of the band saws ranges from 0.20 meters per second to 25 meters per second. In some specific cases such as customized band saw machines are designed for friction cutting of extra-hard metals that can run its band speeds around 76 meters per second.
In the metalworking sector, metal cutting bandsaw machine is often equipped with brushes or brush-wheels for the prevention of chip stuck in between the blade’s teeth. Besides, in order to cool the blade, systems with cutting fluid is a must-have for band saw machines, because the coolant can wash away the chips while keeping the sawing blade cool as well as well-lubricated.
Horizontal bandsaw machine holds the workpiece fixed while the blade swings down through the cutting process. This design configuration is utilized to cut long materials such as pipe or bar stock. Accordingly, it is a crucial part of the facilities in most machine shops.
The horizontal configuration, however, is not universally useful especially for cutting curves or complicated profiles. Small horizontal bandsaw machine usually uses a gravity feed only. Under manual mode in which human operators are a major character, and the saw is set up for a cut, the operators will raise the saw, and position the material to be cut underneath the blade, and then they will turn on the saw. Accordingly, the blade slowly descends into the workpiece, sawing it as the band blade moves. On the other hand, for the CNC model, more sophisticated versions of this type of sawing are partially automated through the PLC or CNC control systems. This kind of control is designed for band saws for large volume cutting.
Speaking of the metal cutting bandsaw, there are mainly two kinds of sawing machines in the industrial market: band sawing machine and circular sawing machine. Unlike band sawing machine, circular sawing machine utilizes circular tools to process sawing procedure rather than sawing bands to achieve the cutting mechanism, which leads to other machining features that are different from band sawing mechanism.
On the other hand, a band saw is also called as a bandsaw machine, which is a powered sawing machine with a long and sharp blade consisting of a continuous band of toothed metal stretched between wheels to cut targeted materials.
Regarding the industrial application, a bandsaw machine is used particularly in metalworking, woodworking, and lumbering, but can also be used to cut a variety of other materials. The primary advantages of band saw machines include uniform cutting movement as a result of an evenly distributed tooth loads, and the capability to cut irregular or curved shapes like a jigsaw. Speaking of the curve scales, the minimal radius of a curve is decided by the width of the saw band and the curves.
The inception of band sawing can be dated back to the 19th century. In around the 1800s, it was the time when William Newberry had received a British patent for the idea, however, band saws remained impractical basically due to the inability to the fact that it was hard to produce accurate and durable cutting blades using the technology back then, because continual flexing of the blades over the wheels will make the material to fail. Technology then was not strong enough. Later, it was only around four decades passed then a woman named Anne Paulin Crepin devised a welding technique that has overcome this obstacle. The French inventor later applied for a patent around the 1840s, and soon afterward she sold the right to employ it to produce A. Perin & Company of Paris. Afterward, the first US band saw patent was granted to a man Benjamin Barker of Ellsworth, Maine, in the year1836, and the first factory produced and commercially available of the practical band saw machines in America was launched by a design of Paul Prybil. Since the invention of band saw machines, the industrial process has been changed ever since and the speed of sawing is enhanced at a great scale.
Band saws have improved the quality and speed of modern life and now they are necessary metalworking machinery in the 21st century, deeply rooted as a link of the industrial world.
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