How to choose the sawing speed?

Posted on Nov 1, 2019

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Band sawing application
In the industrialized society, band sawing machines are widely applied in a wide variety of applications. Regarding the major applications, a band sawing machine is used particularly in metalworking, woodworking, and lumbering sectors, but can also be used to cut a variety of other materials.
 

Advancement making progress

The invention of band sawing machinery was a technology leap, and since that it has been used and improved for several generations and has become one of the most widely applied machine tool models with the broadest variety in the market. Nowadays, the usages of band sawing machines are particularly in metalworking, woodworking, and lumbering, but they can also be applied to cut a variety of other hard materials with lengthy body. The major advantages of band sawing machines include uniform cutting movement due to its evenly distributed tooth loads, and the capability to cut irregular or curved profiles.

Blade coating matters

The sawing band of band saw machinery is crucial to the cutting results. Ever since the inception of the bi-metal technology had been originated in the 1960s in the last century, this technology was followed by the introduction of the carbide tipped blades. In the past, the sawing efficiency of band sawing machineries was defined before the invention of the bi-metal blades.

The band sawing blades that were used to be made entirely of high carbon steel as it was flexible enough to withstand the stress emitted by its winding path around the band saw machine’s drive wheels as well as through the saw blade guides. Therefore, in the old says, it was necessary to use a softer, more pliable backing material, and manufacturers were confined from capitalizing on the sawing productivity that could be gained by using a rather harder material. Later, the bi-metal and carbide-tipped band saws changed band sawing industry in a great scale. Since then, advancements in tooth configurations and geometry march toward increased achievements.

Automatic band saws

As programmed mechanics, automated band sawing features the preset feeding rate, returning, falling, part feeding, and clamping systems. These modern features are well cooperated in the production environment in which if there is only one equipment operator per saw, then the manufacturing model is considered not practical at all.

Because modern band sawing tasks request that each operator to feed and unload many automatic band saw machines as they can. Some automatic band saws are based on numerical control to not only cut faster, but to be more accurate. This kind of design and edition grants better repeatability.

Major advantages

If put the two sawing machineries into comparison, 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. Besides the radius, the speed of the band is also decided by other major considerations, which ranges from around 0.20 meters per second to 25 meters per second.

In some specific band sawing models such as customized band saw machines which are designed for friction cutting of extra-hard metals, those kinds of machines can run its band speeds around 76 meters per second, granting a large productivity. Since the band saws machines are sawing equipment that are designed for industrial metal-cutting use, here are some of the metalworking applications. They are the long work piece cutting tasks such as for construction steels in fabrication shops and for bar stock in machine shops. It is recognized that, band sawing with sensors and other measurement attached, can cope with higher precision demands and grant better cutting precision for large amount manufacture model.

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