Summer I Internship 2018
05/21/2018
Name of the members:
Zachary Citti
Deepa Banjara
Ramya El-Saleh
Name of the mentor:
Bruce Benjamin
Meeting Time:
10:00 am - 3:00 pm
S-327
Mentor's Meeting Time:
Monday: 7:30 am - 3:00 pm
Tuesday: 12:30 am - 3:00 pm
Wednesday: 7:30 am - 3:00 pm
Thursday: 12:30 pm - 3:00 pm
Goals and Objectives:
- Our goal for Summer I is to make a robot based on the rules for 2018-2019 VEX robotics competition
- It will allow us to expose and understand more mechanism which will be useful for us to build a robot in next competition
- Our objectives is to get more ideas on the mechanism of the robot for the future competition.
On May 21 Monday, Zachary and Deepa worked on the robot we built for sumo bot. We checked and fixed the motors and the programming of the robot that day.
05/22/2018
On Tuesday, Zachary was still working on maintaining the stability of the robot and Deepa was researching for the ideas for the new robot. After doing some research we decided to make a robot based on 2018-2019 Turning point competition although we will not be participating in this competition.
05/23/2018
After researching about the mechanism we can use on the robot, Zachary started working on making a claw which will be used to grab a disk during the competition. Deepa was planning to work on the ball launcher which will be used to toggled the flag .
05/24/2018
On Thursday, Zachary finished working on the claw and started working on making an arm for the robot. Deepa was still working on the ball launcher.
05/29/2018
The arm zachary was building had to be changed because he was planning to add sliding mechanism to the arm which will allow the robot to put the disk on the pole easily. The ball launcher Deepa was working was having some difficulties. So Deepa had to change the mechanism. Deepa spent most of the researching the new ideas for the ball launcher.
05/30/2018
Deepa was still researching on the mechanism for the ball launcher. As the main purpose of the ball launcher is to toggle the flag I have to consider the strength of the launcher and the torque. In the above figure, I was having difficulties increasing the speed of the launcher and its strength to throw a ball to a longer distance. Zachary on the other hand was working on making an arm for the robot.
We spent most of the day working on our own prototype mechanism.
06/04/2018
On Monday, Deepa was having trouble with the lifting mechanism in the ball launcher. Due to the heavy weight and using of one motor was not sufficient for the lifting of ball launcher. So, I changed the whole mechanism into different ball launcher. Zachary worked on the claw. Since Maya started working with us from Monday, she started researching on the mechanism she will be working on for the base.
06/05/2018
The ball launcher Deepa was working on was having a trouble with the launching mechanism. The motors I was using was not sufficient to lift up the arms for the launcher. Adding one more motor to give the extra power to lift up the launcher was not sufficient for the mechanism as well. Instead of focusing more on using motors I tried to use gears and rubber to the launcher more torque and speed. Zachary on the other hand was having difficulties putting the rotating mechanism for the claw.
06/06/2018
Since the mechanism for the launcher was not working Deepa spend the day by researching the solution for the launcher and try to figure out different mechanism. Zachary added the rotating mechanism that day and now he is working on setting up the sliding mechanism for the arm. Maya was working on researching for the transforming base.
06/07/2018
We spent Thursday on researching and applying the mechanism to our prototype.
06/11/2018
Deepa dismantled the launcher to resolved the issues and add the chain mechanism to be able to be able to provide maximum strength to the launcher.
06/12/2018
Deepa had to make the adjustment to the launching mechanism because the motors was not supporting the ball launcher. The claw zachary was working on had to change certain feature which will allow the claw to move in 180 degree.
06/13/2018
The ball launcher shown in the above figure was made using chain system, the main intention of that system is to provide torque to the launcher so that the ball will travel a greater distance. Deepa had made some adjustment on the given launcher by using rubber and gear but it was not enough. I spent that day working on the adjustment of the launcher. Zachary was starting to work on the sliding mechanism.
06/14/2018
Deepa did some improvement to the ball launcher and change some functionality. Instead of using big gear I used small gear which will allow the gears to distribute the speed to the launcher evenly with greater speed. The sliding system Zachary was working on using a rack bracket and VEX rack gears.
06/18/2018
Deepa and Maya was discussion the new mechanism for the base of the robot. This mechanism will be based on collecting 6 points from the platform by knocking off the other teams robot. It will have the feature of plaughing system, locking mechanism and transforming base which we will use to knock off the opponent robot . In the figure below it is a sliding system zachary made.
06/19/2018
After we discussed about the transforming base, I tried to experiment different mechanism for the transformation using a VEX rack gears.
06/20/2018
In the figure below, Deepa was experimenting the pneumatic system to use it in the launcher to provide more torque. But due to some reason it was not working. So I decided to work on the old mechanism. Zachary spent that day adjusting the sliding mechanism.
06/21/2018
On Thursday, Deepa was working on making making the ball launcher with a different mechanism. I was experimenting the different mechanism from which I got the idea of the speed and the required torque. By using the observation that I have found from the previous mechanism I tried to corporate those ideas to the new improvised mechanism launcher.
06/25/2018
Deepa spent most of the working on the same mechanism that I have started on Thursday.
06/26/2018
On tuesday, Deepa started working on the base for the robot. The sliding system for the arm Zachary was working on had to make some adjustment to it. so he spent most of that day making an adjustment to it.
06/27/2018
Zachary finished replacing the servos with standard motors. While the servo motors would have been more practical, they did not seem to be able to turn a full 90 degrees in either direction, though this could have simply been a coding issue. However, while the arm's "wrist" may be trickier to work with, it may contribute to the flexibility of the robot. As for the claw, the regular motor is strong enough to allow the claw to fully open and close, whereas the servo could not. That said, the claw cannot be "over-opened," so the motor stops anyways and can indefinitely replace the servo there.
06/28/2018
Deepa was working on the base for the robot and try to work out the space for the launcher. While attaching the launcher I have to consider the fixed angle and inclination for it. So that it will be to toggle the flag from a far distance with more accuracy.
07/02/2018
Deepa finished making the base for the robot. In the base for the robot I installed the Mechanum wheel which allows the robot to rotate at 45° and 45° parallel to the axis of rotation. It will allow the robot to move in all the direction.
07/03/2018
Deepa installed the launcher into the base.
Reference:
Mecanum wheel.(n.d.). In Wikipedia. Retrived July 09, 2018 from
https://en.wikipedia.org/wiki/Mecanum_wheel
Comments
Post a Comment