4 DoF mechanical arm mounted on a tripod
in
Mechanical Engineering
held by
IBG Research
Last seen:
Contest Ended, Winner(s) have been selected.
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Open
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Choosing Finalist
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Ended
Description:
We want to design an arm which can be mounted on a tripod as shown in the attached image. The total length of the arm is going to be 1.5m from pivot to end effector. For the movement of the joints please refer the other image. The total weight of the arm and the mechanism has to be less than 3kg. The payload is going to be less than 300 grams.Your job is to design the underlying mechanism which can drive this arm as smoothly as possible. The deliverables are going to be CAD of the mechanism and BOM and anything else which will be required to prototype the arm.
The project will only begin with this contest and the designer will be hired for continuation of the project.
Wants:
The evaluation criteria will be:1. Number of components used
2. Simplicity of the mechanism
3. Reliability of the mechanism
4. Material used
5. Aesthetics
Don't Wants:
We do not want renders or creative visualisations.
Prepaid PrizeEntries
1st Winner
#35 4DOF SCARA arm design with Cycloidal drives - RESUBMISSION
by GalaxyRobotics
Aug 23, 2020 20:46
#36 First Design Attempt - Complete Assembly with Fastener
by ahmadnazree
Download Files
Aug 24, 2020 2:59
#37 4 DoF Mech. Arm
by Mohamed Ahmed
Download Files
- Autodesk Inventor 2021 — Full Assembly2
- Autodesk Inventor 2021 — 4Dof Mech. Arm BOM
- Autodesk Inventor 2021 — Assembly Closed 3
- Autodesk Inventor 2021 — Assembly Closed 1
- Autodesk Inventor 2021 — Full Assembly Open 5
- Autodesk Inventor 2021 — Full Assembly Open 4
- Autodesk Inventor 2021 — Full Assembly Open 1
- Autodesk Inventor 2021 — Full Assembly Open 2
- Autodesk Inventor 2021 — Full Assembly Open 3
Aug 24, 2020 4:28
#5 Mechanical Arm
by sherifelsheikh
Declined
Download Files
- Microsoft Excel — BOM mechanical arm parts
- jpg — Mechanical ARM ASSEMBLY-01
- jpg — Mechanical ARM ASSEMBLY-02
- jpg — Mechanical ARM ASSEMBLY-03
- jpg — Mechanical ARM ASSEMBLY-04
- jpg — Mechanical ARM ASSEMBLY-05
- jpg — Mechanical ARM ASSEMBLY-06
- jpg — Mechanical ARM ASSEMBLY-07
- jpg — Mechanical ARM ASSEMBLY-08
- jpg — Mechanical ARM ASSEMBLY-09
- jpg — Mechanical ARM ASSEMBLY-10
- jpg — Mechanical ARM ASSEMBLY-11
- jpg — Mechanical ARM ASSEMBLY-12
- jpg — Mechanical ARM ASSEMBLY-13
- PDF — Mechanical ARM drawing
- PDF — ARM- Inner-01
- PDF — ARM- Inner-01
Jun 26, 2020 21:54
#14 Simple Minimalist and Heavy Mechanical arm mounted on a tripod
by Steven wijay
Jul 4, 2020 19:11
#17 Simple Minimalist and Heavy Mechanical arm mounted on a tripod V.2
by Steven wijay
Declined
Jul 7, 2020 13:17
Discussion
Showing last 20 comments - View All
Is there any update about the contest?
I'm working on it, I will submit my design soon.
Are available to design a mechanism which fully driven by pneumatic circuit?
Hey, can you provide more details on the end effecter's use and what could be the source of arm movement like motors, mechanical links etc?
Hi @Lucian and IBM Resereach. Thankyou for extend this contest. But if possible, as engineering design, this is need more compex information. All of designer got less information. so we are a bit confused where we have to go. what type of motor you are using for. this is will impact the total weight. as you know we are using random motor for make the arm move. we have to know where we go, what part that we use. so we design base what you are using, not what we want because this is your project. so we are actually follow your requirment. please understand this. im really happy if i can do contribution on your project. but i need more design requirment.
Thankyou all. Keep safe right.
Best
Steven
Thankyou all. Keep safe right.
Best
Steven
Hi all,
We talked to the client and extended the contest a few more weeks so you can come up with more ideas, so he could choose a winner at the end of the contest.
He will give more feedback on why some of the entries do not meet the requirements.
Thanks,
Lucian
We talked to the client and extended the contest a few more weeks so you can come up with more ideas, so he could choose a winner at the end of the contest.
He will give more feedback on why some of the entries do not meet the requirements.
Thanks,
Lucian
@Walxo As I said earlier, we were looking for innovative ideas and not copy-pasted ones. We did not get what we were expecting.
@Sam_Mayo Eng. Sorry. we had already extended it so can't extend more.
Could you add five more days for those of us who didn't participate?
To IBG Researsh.Gents,You don't want genius ideas and don't know what you want.This case is precedent in Cad Crowd community.
@Sava I understand that it can be heartbreaking. All the efforts going in vain. I tried making all the designs open but I am not able to because Cadcrowd doesn't allow me. We were really hoping to get some really innovative ideas from the community but we failed. @Paulf Thank you for great suggestion. We tried to be clear with all our requirements and constraints in the description and we were also actively clearing doubts in comments and through messages, so that we can have a really design. Please understand that we also invested a lot of time and efforts running the contest and it is hard on us also, not getting something that we had hoped for.
Dear IBG Research, thank you for organizing the contest. I would like to suggest for next time to minimize time and effort consuming issues, please specify more requirements. The less precise the requirement, the more variance you will find in your results. Plus if the award was already mentioned, then the rule of winner selection should be applied, otherwise you will lose the credibility.
OK, why you don't make the entries to be visible - let us see them! All this conspiracy is so boring - blind projects all the time... If no one wins let's just learn something from each other.
Thank you all for your great efforts. We evaluated all the entries but we did not find most of the entries acceptable. The reason could be either we did not give enough time or the explanation was not clear. Hopefully, we will be able to work together next time.
All the best for your future.
All the best for your future.
would be possible to extend the contest two days. I am working on the design.
Thanks,
Thanks,
Do we need to select actuator(Motors, sensors, Gear box) etc??
If so what is the required accuracy and speed for the system.??
If so what is the required accuracy and speed for the system.??
@RamaKD Identical is preferred but it can be different.
must both arm have the same length? or can it be different?
Thanks for extending the deadline
Has the dead line been extended?
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Hand Drawn PDF to CAD and 3D
Convert hand drawn PDF to CAD and 3D as follows.
Gasket - CAD
Spacer - CAD and 3D
Tube - CAD and 3D
Correct scaling as necessary.
Deliverable's include the following file types:
DWG
PDF
STEP
ANSI size C sheet.
Sam_Mayo Eng.
Designer