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The Semi-Automatic Saw
The Semi-Automatic Saw is a cutting tool that uses an actuator to move and provide power to a saw blade.
The control of the direction of the saw is controlled by a human input.
In many cases the directional force of the saw is provided by human input.
Semi-Automatic Saw operation
Training, safety equipment and precaution is required for safe operation of a semi-automatic saw. Because there are a variety of types of saws with specific applications and functions it is important to be well versed on the safe intended operation of the saw you are using.
For this Task we will be using a metal cutting band-saw located in the CPTC Cutting Lab.
To begin use gather measurements, material to be cut, and be sure that saw is de-energized.
Choose the correct blade for the material to be cut paying attention to the number of teeth per inch.
Measure and mark the stock material to the length required being sure to take into account the material being cut away also known as Kerf.
Place the material into the vice with the blade touching the line to be cut, and secure the vice.
Once secured in the vice place raise the blade and lock the saw in the up position.
Energize the saw and once there is a steady flow of coolant flowing over the blade shift the selector handle to "Feed" and allow the saw to drop slowly onto the material paying close attention to make sure there is no binding in the cut.
Allow the saw to continue to cut until it comes to the fully down position where the cut will be completed.
Once the saw comes to the fully down position it should come to a stop and de-energize, if not de-energize the saw manually before retrieving the newly cut material.
Deburr and measure to ensure cut is within desired tolerance.
Task
Cut two pieces of 1" 6061-T6 AL Square Bar to 1-1/4"
The Semi-Automatic Saw requires the input and setup of a human to accomplish a cut. Because of this depending on the experience and attentiveness of the operator accuracy has the potential to be very good.
Time for cuts for the Semi-Auto Saw is also up the experience of the operator. Saws like this are usually built with jigs that can allow for quick turn around between cuts.
*Times are for a single cut*
Conclusion:
The Semi-Automatic saw is a material processing piece of equipment that allows a system high efficiency in processing material. It falls short of the hand saw in initial cost and skill needed to operate. It does require the input and interaction of a human to accomplish cutting, but has the potential to produce accurate cuts with considerably more time efficiency.
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