4 DoF mechanical arm mounted on a tripod

in Mechanical Engineering held by IBG Research
Contest Ended, Winner(s) have been selected.
  • Open
  • Choosing Finalist
  • 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.

Entries

= Buyer's Rating
1st Winner
#35 4DOF SCARA arm design with Cycloidal drives - RESUBMISSION by GalaxyRobotics
Aug 23, 2020 20:46
#22 4DOF tripod mounted arm by angel1
Jul 11, 2020 22:48
#29 First Design Attempt by ahmadnazree
Aug 21, 2020 11:59
#21 4DOF SCARA arm design with Cycloidal drives - FINAL (2) by GalaxyRobotics
Jul 11, 2020 20:04
#32 4 DOF Mechanical Arm. by Abhishek_Ranjan
Aug 22, 2020 16:47
#36 First Design Attempt - Complete Assembly with Fastener by ahmadnazree
Aug 24, 2020 2:59
#38 Mecha Arm by Ridwan Sept by Ridwan Sept
Aug 24, 2020 5:22
#39 Mech Arm by Ridwan Sept by Ridwan Sept
Aug 26, 2020 8:36
#3 Tripod Arms by Iam_softman
Jun 26, 2020 14:25
#4 Tripod Arms by Iam_softman
Jun 26, 2020 14:48
#6 4 DOF with Two Drivers Mechanism by RamaKD
Jun 30, 2020 11:22
#10 4 DOF with Two Drivers Mechanism (Revision) by RamaKD
Declined
Download Files
Jul 1, 2020 12:03
#13 4DOF SCARA arm design with Cycloidal drives by GalaxyRobotics
Jul 2, 2020 19:52
#14 Simple Minimalist and Heavy Mechanical arm mounted on a tripod by Steven wijay
Jul 4, 2020 19:11
#15 4 DOF with Two Drivers Mechanism (Adjusted) by RamaKD
Jul 6, 2020 10:38
#19 4_DOF_Mechanical_Arm_Burhan by burhanp
Jul 11, 2020 17:20
#20 4DOF SCARA arm design with Cycloidal drives - FINAL (1) by GalaxyRobotics
Jul 11, 2020 19:58

Discussion

Showing last 20 comments - View All

Sam_Mayo Eng.

Designer

Mon, 31 Aug 2020 00:52:30 +0000
Is there any update about the contest?

Sam_Mayo Eng.

Designer

Fri, 14 Aug 2020 07:35:43 +0000
I'm working on it, I will submit my design soon.
Mon, 10 Aug 2020 21:08:33 +0000
Are available to design a mechanism which fully driven by pneumatic circuit?

Gurpreet_Singh

Designer

Sun, 09 Aug 2020 20:11:18 +0000
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?

Steven wijay

Designer

Wed, 05 Aug 2020 08:46:14 +0000
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

Lucian

Administrator

Mon, 03 Aug 2020 13:25:02 +0000
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

IBG Research

Buyer

Tue, 21 Jul 2020 20:34:08 +0000
@Walxo As I said earlier, we were looking for innovative ideas and not copy-pasted ones. We did not get what we were expecting.

IBG Research

Buyer

Tue, 21 Jul 2020 20:29:49 +0000
@Sam_Mayo Eng. Sorry. we had already extended it so can't extend more.

Sam_Mayo Eng.

Designer

Tue, 21 Jul 2020 05:09:52 +0000
Could you add five more days for those of us who didn't participate?

walxo

Designer

Tue, 21 Jul 2020 05:01:34 +0000
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.

IBG Research

Buyer

Tue, 21 Jul 2020 00:01:05 +0000
@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.

paulf

Designer

Mon, 20 Jul 2020 10:17:13 +0000
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.

Sava

Designer

Sun, 19 Jul 2020 17:07:01 +0000
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.

IBG Research

Buyer

Sun, 19 Jul 2020 15:26:23 +0000
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.

Fadi Sayegh

Designer

Wed, 08 Jul 2020 23:01:26 +0000
would be possible to extend the contest two days. I am working on the design.
Thanks,
Mon, 06 Jul 2020 11:53:11 +0000
Do we need to select actuator(Motors, sensors, Gear box) etc??
If so what is the required accuracy and speed for the system.??

IBG Research

Buyer

Mon, 06 Jul 2020 07:45:36 +0000
@RamaKD Identical is preferred but it can be different.

RamaKD

Designer

Mon, 06 Jul 2020 07:28:53 +0000
must both arm have the same length? or can it be different?
Fri, 03 Jul 2020 09:50:41 +0000
Thanks for extending the deadline

GalaxyRobotics

Designer

Thu, 02 Jul 2020 21:54:19 +0000
Has the dead line been extended?

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