Linear Slide for Robotics (FRC / FTC / VEX)

thingiverse

Multi-stage push-pull linear slide for robotic applications. Use by FRC Team 4905 to play the 2020 Infinite Recharge game. Our robot used a 4 stage linear slide. The linear slide works best pointed up, but will work parallel to ground. When parallel to ground, the frictional force increases nonlinearly as the slide moves out requiring more force to extend & retract. You can extend much higher up, than you can parallel to ground, but reaching out several feet our is very workable. There are 4 print files. You need one END and TOP for each slide. You will need one S1 and S2 print for each stage of the slide. In addition to the 3D prints you will need (all items can be purchased from Amazon): MakerBeam XL Black Anodized Beams 1000x15x15mm m3 nuts and washers for MakerBeam M3x8mm bolts M3x16mm bolts M3 Tap (to tap ends of MakerBeam) 1.3mm UHMWPE Cord V Groove Pulley Bearing (3x12x4mm) See attached picture for instruction on how to assemble and string the slide. Note the cord is held in place by bolt and washer that clamps the cord where it goes through the printed pieces. To keep the cord from slipping, it is recommended to loop it around the bolt before tightening. Do not use washers on the M3x16mm bolts that hold the pulley as they will crush the plastic one keep the pulley from rotating. Washers should only be used to clamp the cording. Below is a link showing the operation of a 3 stage linear slide: https://drive.google.com/file/d/122YZcI4gYCVlrI-GU7jR9ea8OS0qSh7T/view?usp=sharing