Some people mistake powered saws for automatic saws, but they are in fact not the same. While both have power-driven blades to cut materials, the automatic saw pairs an automatic feeding and unloading system. It indicates that the whole cutting process is performed with zero human labor. Below is a video of a horizontal automatic saw demonstrating a typical bar stock cutting process.
Saws were invented thousands of years ago. The need for processing materials makes them one of the necessary tools in the development of human civilizations. Over centuries, the core cutting mechanism of these tools stayed the same, but the efficiency and precision have improved significantly, ultimately leading to automatic saws.
Sawing machines today refer to the powered tools that require minimum human labor to cut. Instead of sawing manually by the operator, the powered saw machines have the blade driven by a motor, which saves a lot of labor. In recent decades, the advent of automatic saws has further increased productivity in the modern metalworking industries. So let us take a closer look at the specifics of an automatic Saw.
These full-auto sawing machines are used almost exclusively in the heavy-duty metalworking industries. They do not manufacture the end products. Instead, they serve as the pre-process stations that cut the full-length bar stocks or tubes into a predetermined length (or size) for other follow-up procedures.
Most automatic saws used in heavy industries incorporate the CNC system for high-precision and high-efficiency processing. The CNC programmable control allows for the fastest (or most effective) feed rate possible, which shortens the work cycle and minimizes the machine's idle time. The operators of an automatic saw only have to set up the program on the control panel and the machine will take care of the rest.
An automatic saw is constructed with the powered saw, the feeding system, the work-holding system, the coolant system, and the chip conveyor. These are the units that have to do with the actual sawing process. There are also additional units such as an air filtration system and blade sharpener that functions for maintenance or safety purposes.
Regardless of the models and brands, automatic saws are categorized into two basic types based on their sawing approach: the ones that apply circular blades and the ones using band saw blades. The automatic circular saws have a disc-like blade; the automatic band saws are further categorized into horizontal and vertical styles.
The circular saws are prevalent because of their efficiency, rigid construction, and ease of use. Unlike the reciprocating saws that require a return stroke for the next cut and the band saws that need a periodical inspection on the blade, the circular blade is ready to cut as long as it spins. The sharpness is easier to maintain too. However, the size of material it can cut has to do directly with the blade diameter. Here is another video of a circular automatic saw:
When it comes to automatic band saws we can further distinguish the horizontal and the vertical type.
With this type of automatic saw, the band is positioned over the bar stock. It presses downward to cut. They are also efficient machines. Yet, the disadvantage is that the blade loses its tension as it is used. Also, the blades are considered consumables since they are replaced when they lose tension or get dull.
Vertical saws are frequently found in smaller shops because their configuration takes up less space. They are not as ideal as the horizontal counterparts or the circular saws when cutting bar stocks into length. Rather, they are suitable for dissecting sheet (or plate) materials.
As mentioned earlier, the full-auto sawing machines are used mostly in metalworking industries. Therefore, the materials they process are metals such as stainless steel, brass, aluminum, copper, etc. Besides metalworking, automatic saws are also used to cut wood, plastics, and even foam.
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