Go to Post HOSE CUTTER: A tool used to make hoses too short. . - dlavery [more]
Home
Go Back   Chief Delphi > Technical > Technical Discussion
CD-Media   CD-Spy  
portal register members calendar search Today's Posts Mark Forums Read FAQ rules

 
 
 
Thread Tools Rate Thread Display Modes
Prev Previous Post   Next Post Next
  #2   Spotlight this post!  
Unread 21-01-2015, 11:52
RonnieS's Avatar
RonnieS RonnieS is offline
Just a tad washed up
AKA: Ronnie Sherrer
FRC #0314
Team Role: College Student
 
Join Date: Jan 2013
Rookie Year: 2006
Location: Flint/Warren
Posts: 389
RonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond reputeRonnieS has a reputation beyond repute
Re: actuating a brake or anti-backdrive

Quote:
Originally Posted by loafdog View Post
Hi,

We don't plan on using pneumatics on our robot so I was looking for ideas that used something else to control/move a mechanism that would brake/stop elevator.
I was wondering if servos can be used to control brakes or some other kind of anti-backdrive component. Poking around andymark I saw shifting gearboxes controlled by servos for example. I've seen people on CD discuss bike brakes, ratchets, etc..
But I haven't seen anyone discuss how you can implement these ideas. Anyone done this before and have details/pics they can share?

(note, I'm not a mechanical type.. i do software, just trying to get ideas to share with my team).

THanks.
-Maciej
Look at HOT's tech notes and see how they used a motor, I believe it was a window motor, to actuate their shifting. You can do a linkage that actuates the bike disc break on something like a cam.
I don't know what your gearbox ratio is to do your lifting or how much you wan't to lift but I would strongly suggest looking at your motors used, gear ratios, and power consumption to see if you can hold is strictly with programming which would be stalling the motor. For something like a cim, it wouldn't be as big of a deal to stall under the right loads compared to something like a 550 or 775 that relies on the turning of the shaft to cool it. There are some pretty good papers on Chief already talking about thermal mass and such.
-Ronnie
__________________
"Do not argue with an idiot. He will drag you down to his level and beat you with experience"
 


Thread Tools
Display Modes Rate This Thread
Rate This Thread:

Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

vB code is On
Smilies are On
[IMG] code is On
HTML code is Off
Forum Jump


All times are GMT -5. The time now is 01:02.

The Chief Delphi Forums are sponsored by Innovation First International, Inc.


Powered by vBulletin® Version 3.6.4
Copyright ©2000 - 2017, Jelsoft Enterprises Ltd.
Copyright © Chief Delphi