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Objective:
In this project, our main objective is to effectively model the Ryobi ® Variable
Speed Reciprocating Saw. It runs through normal 120-V alternating current power. When
on, the saw blade has a stroke of 19/16 inches moving at a maximum speed of 2800
strokes per minute. The entire assembly, including the removable blade, weights 6.3
pounds. The saw has 6 speed settings, a trigger which determines whether the saw is on
or off, and interchangeable blades. After completing the model and assembling it, we will
attempt to animate several aspects of the construction and functions of the saw. Finally,
we will end with an ANSYS analysis of the saw to determine certain limits, for example
under what load the blade would break, and what would be the strongest material through
which the blade can cut.
Challenges:
In undertaking our task, there are many difficulties that arise. First, the saw is
designed for maximum user comfort. That means that the external shell is contoured for
the human hand, with different grips and conveniences. These, as a whole, may be
difficult to model in ProE. A second complexity will be precisely measuring the size of
the pieces to ensure that our assembly comes together correctly. Because of the odd
external shape, some of the internal components are also oddly designed. We must also
take care in disassembling the model so that we do not damage any of the pieces. Finally,
there are approximately 50 different parts to be modeled. Having that many parts to
assemble creates complexities in and of itself.
A schematic of the saw follows