Posted on Nov 22, 20196
Cutting straight, sawing tight
Many of the band sawing machinery users ever shared their experiences of band saw not cutting straight. Needless to say, there are several possibilities. Here we will address the most common reasons for a discussion. The premises is that, this discussion talks mostly about high-speed band saws such as typically used to cut insulation, and plastic with the blade speed ranging from 3000 to 8500 feet per minute, without the use of coolant. On the other hand, low speed band saws are usually utilized to cut metal with the speed ranging from 100 to 300 feet per minute, with coolant.
There are several critical conditions that forbid cutting straight. The possibilities are dull blade, incorrect installed blade, wrong direction, inappropriate blade tension, worn band saw wheels, and misaligned blade guides.
With these reasons, the sawing process would become difficult and cutting is thus hindered from doing well. For those high speeds cutting, the possibilities are many while for low speed cutting for metal materials and work pieces, let’s come to know about metal cutting band saws first.
In the metal cutting sector, here are two kinds of sawing machines in the industrial market: band sawing machine and circular sawing machine. This kind of classification makes perfect sense because the two are different. Unlike band sawing machine, circular sawing machine utilizes spinning circular tools to process sawing procedure rather than sawing bands to achieve the cutting mechanism, which leads to other machining features that is different from band sawing method.
On the other hand, a band saw is also called as band saw, which is a power-driven sawing machine with a long and sharp blades consisting of a continuous band of toothed metal stretched for sawing process.
In the modern design, circular and band sawing nowadays are mostly driven by electricity, while in the ancient days, sawing force was applied mainly by human hands, or later it may be driven by natural generations such as steam and water.
Later, after the technology evolution, sawing power can be electricity or other power sources. Besides traditional sawing, there is another kind of saw named abrasive saw, which has a powered circular blade that is designed to cut through metal or ceramic. In the market, a band sawing machine is used particularly in metalworking, woodworking, and lumbering, but can also be used to cut a variety of other materials as well as work pieces.
The first 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. Accordingly, with these two kinds of sawing methodology, there evolve two kinds of sawing machines that people use in the present days.
The conventional one evolves into band sawing machine while the abrasive counterparts evolve into circular sawing method and the corresponding facility, or formally stated as circular sawing machine. Since the invention and application exist, it is a general question that is repeatedly asked: Shall onsite operators choose a band saw or a circular saw instead? Practically speaking, it shall be based on what and how a work piece is going to be cut and to be used. Back to the question we asked at the very beginning: why sometimes band sawing machines don’t cut straight? The reasons could be on the operators, machinery, and maybe also on the work piece materials. All these variables need to be evaluated thoroughly by professional band saw experts and with their modifications; users and technicians could set the standardized procedure for the future process.
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