Attack Helicopter - 7444 Offseason Solidworks Build Blog (For Entertainment)

Hello Everyone
I realized that I was bored and said why not design a robot for fun. My main goal is to design a strange looking but efficient system. I prepared a draft design so that the robot can perform its tasks. I seem to have a lot of questions for you during the robot design process.

#Priority List

  • Must do all the tasks perfectly
  • Minimalist elevator system
  • Fast intake system
  • The maximum and minimum lengths of the robot are be short as possible
  • Side climb for charging station (Not Fork)

I prepared a draft design so that the robot can perform its tasks (Very simple design, i want to spend my time on the main design).

When The System Off

When The System On

Since this is a basic design, it has a lot of shortcomings. But you understand what kind of system the robot will have.

Intake System

I think the most efficient intake system is the 1678’s intake system. I left a gap of 50mm for the cone intake part and 180mm for the cube intake part. but I don’t think a 180mm gap will be enough for cube purchase. i will make a fix to this in the main design.

I will continue to share my designs from time to time. Your questions and suggestions are very important to me. REMEMBER MY PURPOSE IS TO HAVE FUN

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Hi guys!
I’m back and I have good news for you.

I’m using 1678 intake (it’s really big and heavy) probably the robot will be imbalance. but last night a friend asked me why don’t you use 972’s elevator connection. I had a sudden awareness and started designing as soon as I got up. I configured it a bit according to my own design. (Thx 972 :slight_smile:)

It has a thickness of 10mm and I think it will completely prevent imbalance
(I used aluminum and maybe I can do 8mm)
There is also a 3 mm version for the inside of the elevator profile.

This is what it looks like when I connect it to the prototype chassis;

It seems to solve the balance problem completely. Now my first job is to create and assemble the main frame of the elevator. I will do the chassis later as the intake system is too big and I want to do side climbing.

I’m also undecided whether to use the rope and pulley system the 972 uses to move the elevator. It’s actually a very logical system and it works efficiently, but it’s a bit risky to do this. If i do i plan to use 3mm steel wire and v-groove bearing.

Anyway, I’ll post here as I continue the design. It would be great if you send your ideas and questions, see you soon :slight_smile:

9 Likes

Hi Again!!

I have finished the basic design of the elevator system and everything is going great. If i make the last stage of the elevator and attach the movement elements, most of the elevator will be finished.

But I have a few questions and fears on my mind

  • Elevator angle may be insufficient
  • The lowest level of the elevator may be too high
  • intake may not match the height of the elevator
  • a small design mistake I may have overlooked could ruin the whole design :slight_smile:

This is the final state of the robot;

Features;

  • total length when system off 880mm (34.64567in)
  • total length when system on 1280mm (50.39370in)
  • width of the lift with all fasteners 266mm (10.47244in)

I’m progressing well now and haven’t encountered any problems. I hope it continues like this.
By the way, I decided to use chains or belts instead of ropes in the system. I will continue tomorrow.

Do not forget to write your questions and ideas, have a nice day :heart:

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You should make a 2d layout sketch to figure out the optimal angle of your elevator, and how much travel you need. This will help inform your design.

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Thanks, I will create a 2D sketch tomorrow for clearer understanding.

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Remember that the battery is nearly 10 pounds, that will also affect your center of gravity

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I reserved a space right under the elevator for the battery. If there is a problem due to the weight balance, I can easily solve the problem with a few minor changes. Thanks for reminding :hugs:

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Hi guys
I was out of town for a while and forgot my computer’s charging cable :frowning:
That’s why I couldn’t design and share. But today I finished the chassis with a bit of tinkering.
Normally I was planning to build the chassis later, but I realized that I had to determine the chassis limits before I made the intake system.

Final Chassis

  • 700x700mm square chassis (27.55x27.55in)
  • I used a 25x50mm and 20x50mm aluminium profile
  • I used 4mm thick steel bracket
  • I left a gap in the front of the chassis for object reception (265mm wide and 335mm deep)

The Assembled State Of The Robot

I made minor changes to the elevator, but these are simple dimensional changes. Now it’s time for the intake system. actually i was going to do the intake system of 1678 but i gave up on that. Too big and bulky. Instead I have an original design in mind. If I can it will be great.

Do not forget to share your comments and ideas. See you later :hugs:

4 Likes

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