Where Did Sawing Concept Originate From?

Posted on Oct 11, 2019

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In the history, saws were at first serrate-like or serrate-shaped natural objects such as shark teeth that was put to use in the daily usages. In the ancient Egyptian history, unframed saws which were made of copper were recorded as early as the 3,100BC.

Where was the sawing concept came from?

In the time, saws have been used for cutting a variety of materials. There are many different models of saws that have been found in many contexts throughout the ancient history in which most of the saws then were made of natural materials. Later, saws were also made of bronze and later iron by craftsmen. In the Iron Age, frame saws were developed holding the blades in tension.

Composition of a modern saw

Nowadays, a saw is a man-made tool consisting of a tough-bladed cut, wire structure, or sawing chain with a hard toothed edge. Saw is exploited to cut through materials, very often woods in the old time but metal and stone as well now. The sawing cut is made by placing the toothed edge against the targeted material and moving it forcefully forth and sometimes less forcefully back or continuously forward. Either ways are available for users using different means.

The driving force of a saw

The driven forces of saws vary from time to time. It was applied mainly by human hands, or later it may be powered by natural generations such as steam and water. 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 and is with advanced accuracy is compared with average band sawing methods.

Band saw development

People who knew these two kinds of sawing methodology also used them in a variety of occasions and the result and feedback told people about the difference. Those knowledge there then evolved two kinds of sawing machines that people use nowadays. The conventional one, as inspired by shark tooth, evolves into band sawing machine while the abrasive counterparts, later evolves into circular sawing methods and the corresponding machines.

Construction of CNC band sawing is made of several critical elements. There are falling mechanism, feeding mechanism, automatic saws, and teeth. Firstly, for metalworking sector, dual column band saws are the greatest variety of machine in the band saw inventory. Some manufacturers utilize rotary tables and the X axis to perform complex cutting as the similar mechanism of milling machines and machine centers. In other cases, pivot band saws is an alternative in which the hinge in an arc as they advance throughout the sawing process as well as the whole procedure.

Secondly, if compared with hydraulic feeding, gravity feeding is more cost effective, which feeds band saws fall under weights. Most band saws are designed with a method to permit the cutting force to be adjusted, such as a movable counterbalancing weight, a coil spring, or a hydraulic or pneumatic damper (speed control valve). Meanwhile, hydraulic feeding band saws are steady and highly effective as well, which uses a positive pressure hydraulic piston to progress the saw via the work at variable pressure values and rates. Thirdly, automated band saws feature preset feeding rate, returning, falling, part feeding, and clamping. These modern features are exploited in the production circumstances in which if there is only one equipment operator per saw then the manufacturing is not practical. Modern band sawing tasks request that each operator can feed and unload many automatic band saw machines. Some automatic band saws are based on numerical control to not only cut faster, but is with better precision.

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