REV FIRST Global, Руководство по эксплуатации

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FIRST Global Building Guide Created by REV Robotics 2019, Licensed Under CC BY-SA 9
3 MECHANICAL COMPONENTS
3.1 EXTRUSION
REV Rail Extrusion is 15mm x 15mm square profile clear anodized Aluminum. Slots accept standard M3 hex-head bolts
or nuts, rather than expensive t-nuts. The five-hole pattern on the end of the extrusion can be M3 tapped (Figure 13). The
slots in the extrusion allow attached brackets to be slid and retightened to an infinite number of locations. This makes
things like mating gears and tensioning chain easy. Fine system adjustments can occur at any point in the system
development which helps foster an iterative design process.
Figure 13: Extrusion and Cross-Section Details
3.2 BRACKETS
3.2.1 Bracket Features
Plastic brackets are nominally 3mm thick and made from molded nylon (PA66). Figure 14 lists key features of the Plastic
Brackets for the REV Robotics Building System. Check individual product CAD models for exact dimensions for each
bracket.
Figure 14: Motion Bracket Feature Details
Alignment Ribs: Protrusions on one side of the bracket seat into the extrusion channel and help align the bracket
to the extrusion and add strength and rigidity to joints.
Extrusion Mounting Holes: M3 Mounting holes are on an 8mm pitch.
Bearing Seat: Brackets with a 9mm hole can be used to mate with any of the plastic bearings to support a shaft.
Motion Interface Mounting Pattern: Circular M3 hole pattern on a 16mm diameter is used to mount to REV
Robotics shaft accessories such as motors and potentiometers.