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Posted on Aug 9, 20192
Composition of metal cutting band saws. The composition of CNC metal cutting band saws have consisted of several critical elements. There are falling mechanism, feeding mechanism, automatic saws, and teeth.
For the metal processing industry, the dual column band saw machines are the most diverse type in the bandsaw machines inventory. Manufacturers use the expansion of the rotary table and X axis on the sawing machine to perform complex cutting, just like the design of a milling machine and a machine center. In some cases, a pivot band saw is an alternative, where the hinge is curved as the work piece advances.
Compared with hydraulic feeding, gravity feeding is more cost-effective. Design of most band saw machines allow adjustment of cutting forces, such as movable counterbalancing weight, a coil spring, or a hydraulic or pneumatic damper. At the same time, the hydraulic feed bandsaw machines are stable and efficient. It uses positive pressure hydraulic pistons to perform cutting work with variable pressure and rates.
The automatic band saw machines can preset the rate of feeding, returning, falling, part feeding, and clamping before performing the sawing task. These functions make sawing process more complete and rapid. Therefore, if each saw is assigned with one operator, it will not be cost-effective for the factory. Modern sawing factories usually require each operator to manage several automatic bandsaw machines at the same time. Because of its CNC control system, the automatic bandsaw machines not only has faster cutting speed, but also has higher precision.
The structure of the band saw machines is suitable for cutting long materials, such as pipes or solid bars, into a certain length in large quantities. Therefore, the band saw machine is necessary equipment for many metal processing plants. And the band saw machine is widely used in various industries. Bandsaw machines can be used for metalworking and woodworking in various industries, and can also be used to cut a variety of other materials.
Unlike band saws, circular saws use circular blades to perform the sawing process. A conventional circular saw is a powered saw that uses toothed or ground disc sets or blades to cut different materials through a rotary motion that rotates around an arbor. In similar mechanisms, hole saws and circular saws also utilize rotary motion, but the cutting output is different from circular saws.
Contrary to circular sawing machines, the main advantages of band saw machines are the uniform sawing movement and the ability to cut irregular or curved shapes, like a jig saw. When it comes to the curve scale, the minimum radius of the curve is determined by the width of the saw band and the curve. In addition to the radius, the sawing speed is determined by other factors. The speed ranges from approximately 0.20 meters to 25 meters per second.
A frequently asked question: circular saw or band saw? In fact, many factors need to be considered for selection, such as factory conditions, required cutting speed, work piece shape and material, etc. Obviously, the wrong choice will lead to a decline in productivity, and the factory will face difficulties in the long-term development.
In some specific band saw models, such as custom band saw machines designed for extra-hard metal cutting, this type of machine can run its blades at a band speed of 76 meters per second, thereby increasing productivity.
For industrial manufacturers who need mass production, circular cold saws are usually the best solution. Conversely, for cutting tasks that has wider tolerance range, a low-cost band saw may be more cost-effective. Due to technological advancements, the functional differences between circular saws and band saws have become smaller. The band saw blades can have various pitches and sizes, which makes the band saw machines highly versatile and capable of cutting various raw materials such as wood, metal and plastic.
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