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The most useful machine: Band saw
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Vertical metal bandsaws use thin metal "ribbon" rings with their teeth pointing downwards to cut the material. Vertical metal cutting bandsaw is different from other stationary shop saws because they can perform three types of cutting:
● Crosscutting or "cutting out"-a cut perpendicular to the long axis of the workpiece.
● Tear cutting-cutting parallel to the long axis of the workpiece.
● Radial or curved cutouts – narrow band-like characteristics like blades allow the operator to turn.
Push the workpiece around the blade while cutting through the material. Minimum radius
About three times the width of the blade.
Although a vertical metal cutting bandsaw come in several varieties and applications, this procedure is limited to vertical band saws for cutting metal and wood.
● They have a slower blade speed and slower cutting speed.
● They have special "metal cutting" blades that have teeth with a smaller pitch and a more durable blade band material.
● They have a more durable material and blade guide pattern.
● They have higher blade speeds and usually faster infeed speeds.
A vertical bandsaw is one of the most common production processes in a machine shop. It is versatile, simple and reliable. Nevertheless, many of the young engineers and mechanics know lasers and abrasive water jets, but they don't know about sawing. Sawing may be less interesting than some machining technologies, but it is still an important machining operation.
Sawing equipment falls into four basic categories: bandsaws, hacksaws, circular saws and abrasive saws. Each type has its place in manufacturing and, when applied correctly, is efficient and effective.
Toolmakers and machinists are probably most familiar with vertical bandsaws, which are found in machining environments ranging from one-off and low-volume tool shops to high-production automotive manufacturers. Vertical bandsaws are the most-versatile and cost-effective style of saw. And, compared to other types of saws, they can cut a broader range of material types and feature sizes. They provide a wider range of cutting speeds and feed rates and are also reasonably accurate and repeatable.
Vertical metal bandsaws come in two styles: horizontal and vertical. Construction is similar for both styles, but the blade orientation provides distinct advantages, depending on the application.
The horizontal band saw shows the workpiece blade in a plane parallel to the floor. Due to the angle of the blade, the horizontal saw is ideal for cutting long materials such as rod, pipe, pipe and structural shapes to the desired lengths.
The vertical metal cutting bandsaw, on the other hand, shows the workpiece blade in a plane perpendicular to the floor. Vertical bandsaws is best suited for cutting shapes from flat materials such as plates and sheets.
The traditional vertical bandsaws are operated manually. Therefore, it is well suited for cutting shapes from boards. Although this is not impossible, it is unlikely that an automatic saw would be used before roughing. Hand saws are more suitable for this activity in tool rooms due to the small volume of parts. Other methods, perhaps spraying water, would be used for similar tasks in a production environment.
The more complex versions, which are often automated, usually by CNC, are called "panel saws". These saws have large tables that are able to hold entire boards from which smaller pieces are cut. Many metal suppliers use plate saws for cutting square, rectangular and odd pieces of tool steel. In addition, some manufacturers use disc saws to cut out blanks, which are then processed.
Aircraft manufacturers often use plate saws in applications where thermal cutting, such as a plasma arc or laser, can create heat impact zones that compromise the material's mechanical properties.
Vertical bandsaws can cut rods, shapes and pipes. However, they are usually not equipped with the same type of clamping mechanisms as horizontal saws that have clamps that work like a vice. The workpiece is clamped between one stationary jaw and one movable jaw. Horizontal saws hold the material steady and cut the blade during cutting, while the vertical saws must carry the material to the blade. Because horizontal saws hold the material still, they are better suited for cutting long, thin pieces of bonded material, such as pipes and butt. Conversely, the vertical bandsaws economically provide the ability to cut large boards; horizontal capable of cutting large boards would not be economical in construction.
The kin for a horizontal band saw is a power saw. Band saws led the chainsaw to the edge of extinction; finding a new hacksaw is difficult. Metal saws are simple machines. They have the same configuration as band saws, but they do reciprocating cutting. They are effective but slow.
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