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T-Hex 4DOF Leg precisions

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drawbot

Post subject: T-Hex 4DOF Leg precisions

Posted: Sun Mar 18, 2012 1:42 pm

Roboteer

Joined: Sat Jan 28, 2012 12:41 pm
Posts: 16
Location: Paris

Hi every one,

I'm actually building my first robot (T-Hex 4DOF) with my nine years old kid and the assembly guide is not always so clear for us.
To avoid mistakes could someone post a reverse angle picture of this one please ?

Thanks you very much for your help

Attachments:

assm15b.jpg [ 73.36 KiB | Viewed 1599 times ]

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Colorasplosion

Post subject: Re: T-Hex 4DOF Leg precisions

Posted: Mon Mar 19, 2012 9:42 am

Paint Grenade

Joined: Tue Jan 10, 2012 10:56 am
Posts: 24

Many of the steps include an exploded view diagram. For instance, the one for that joint is:

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drawbot

Post subject: Re: T-Hex 4DOF Leg precisions

Posted: Mon Mar 19, 2012 12:20 pm

Roboteer

Joined: Sat Jan 28, 2012 12:41 pm
Posts: 16
Location: Paris

Thanks but this scheme seems to be wrong, the ball bearing should be in the reverse position regarding my experience and this thread http://lynxmotion.net/viewtopic.php?f=1 ... 7&start=24.
I just need to be sure don't want to make any mistakes

Last edited by drawbot on Mon Mar 19, 2012 1:24 pm, edited 1 time in total.

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Robot Dude

Post subject: Re: T-Hex 4DOF Leg precisions

Posted: Mon Mar 19, 2012 12:31 pm

Lynxmotion Founder

Joined: Mon Oct 31, 2005 10:46 am
Posts: 9325
Location: my quiet place

That post was specifically for the 485 servo. You're not using 485's are you?

The truth is the bearings can be used either way. You just need to make sure the washer goes in between the bearing and the ASB-04.

_________________
Jim Frye, the Robot Guy
http://www.lynxmotion.com
I've always tried to do my best...

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drawbot

Post subject: Re: T-Hex 4DOF Leg precisions

Posted: Mon Mar 19, 2012 2:03 pm

Roboteer

Joined: Sat Jan 28, 2012 12:41 pm
Posts: 16
Location: Paris

No i'm not, I'm actually using HS-645MG servos. But if i don't reverse the bearing it goes out the C bracket and don't do is job.
here is a pict of my leg

Ps: I'm sorry, i'm totally newbie, so excuse me by advance if i ask stupide questions

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Robot Dude

Post subject: Re: T-Hex 4DOF Leg precisions

Posted: Mon Mar 19, 2012 2:37 pm

Lynxmotion Founder

Joined: Mon Oct 31, 2005 10:46 am
Posts: 9325
Location: my quiet place

As I previously stated you can build the assemblies either way. When designing a set of brackets that will fit many different servos there are some tolerances built in. If the bearings fit better flange outboard then go for it.

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Jim Frye, the Robot Guy
http://www.lynxmotion.com
I've always tried to do my best...

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drawbot

Post subject: Re: T-Hex 4DOF Leg precisions

Posted: Mon Mar 19, 2012 3:07 pm

Roboteer

Joined: Sat Jan 28, 2012 12:41 pm
Posts: 16
Location: Paris

Thank you very much for your help :Â°)

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KM6VV

Post subject: Re: T-Hex 4DOF Leg precisions

Posted: Mon Mar 19, 2012 3:55 pm

Robot Guru

Joined: Fri May 25, 2007 8:21 pm
Posts: 3868
Location: Central Coast, CA, USA

Maybe the C bracket needs to be "sprung" a little to add a little pressure to the bearing? (bend it?).

Alan KM6VV

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Visit:
http://groups.yahoo.com/group/SherlineCNC/
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