RobotGeek Gripper - Penny Gripper (2017 Science Olympiad)

thingiverse

This is a replacement part for the Robotgeek Gripper designed to simplify collecting pennies for the 2017 division C Science Olympiad event, Robot Arm. The part is fully compliant with competition rules but please verify dimensions before using this design. The Robotgeek Gripper - Penny Gripper requires no modifications to the Robotgeek Gripper and serves as a drop-in replacement for existing parts. Additionally, this gripper modification gives the Robotgeek Gripper the capability to grasp stacks of pennies up to 36 mm in height. The gripper should be able to pick up items other than pennies but was designed specifically with pennies in mind. This design project is called Project Apollo. The following printed parts are needed: * 2 x RGS Adapter (20.95 or 21.05 mm) * 2 x Gripper Mid (36mm) Hardware required includes: * 2 x M3x8 Bolts (available on Amazon at https://www.amazon.com/BoNaYuanDa-120pcs-Socket-Screws-M3x10mm/dp/B01MQJPAP0/) * 2 x M3 nuts (available on Amazon at https://www.amazon.com/gp/product/B000NBIH92/) * Some 3ALink Sound Dampening Mat To install: * Feed the M3x8 bolts through the hole on the concave side of the Gripper Mid (36mm) and push the bolt head into the part until it is flush with the concave side, as shown in the picture above. * Feed the M3x8 bolt with the Gripper Mid (36mm) attached through the hole on the RGS Adapter (20.95 or 21.05 mm), ensuring that the large flat parts of each part are against each other and the end of the M3x8 bolt is in the concave section of the RGS Adapter, as shown in the picture above. * Install a M3 nut onto the end of the M3x8 bolt, as shown in the picture above. Use the nut to secure the position of the grippers. * Install foam to the concave side of the Gripper Mid (36mm) if necessary. This completed part replaces the Fingertip Front Plastic Plate and the two Fingertip Side Plastic Plates in the assembly instructions of the Robotgeek Gripper, steps 15 to 17. Design Information: This design is an attempt to integrate the OWI Penny Gripper with the Robotgeek Snapper Arm using the Robotgeek Gripper. The design required making the Gripper Mid taller to accommodate the larger frame of the Robotgeek Gripper. This design offers an advantage over the OWI design: the grippers can be locked at any angle for operation. The two variants of the RGS Adapter were created because I designed these parts without access to a fully assembled gripper. The design has been tested by my friend with the bot but only using the Fingertip Front Plastic Plate and the two Fingertip Side Plastic Plates as reference. Therefore, both versions are included in case your printer is not creating a perfect 1:1 recreation of the main part. I recommend printing the RGS Adapter (20.95 mm) before the (21.05 mm) version. Note: At the time of upload, this design has not been tested in competition and offers no guarantee of performance. Print Settings: * Printer Brand: MakerBot * Printer Model: MakerBot Replicator 1 * Rafts: No * Supports: No * Resolution: .2 * Infill: 15%