I've been programmed to love you.
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

 
Closed Thread
 
Thread Tools Rating: Thread Rating: 6 votes, 5.00 average. Display Modes
  #1   Spotlight this post!  
Unread 30-04-2014, 14:30
philso philso is offline
Mentor
FRC #2587
 
Join Date: Jan 2011
Rookie Year: 2011
Location: Houston, Tx
Posts: 941
philso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond reputephilso has a reputation beyond repute
Re: Butterfly/ octocanum drives

We built an octanum system without regular access to CNC equipment. I do not recommend doing that unless you have an experienced machinist guiding the manufacturing effort and making sure the parts are being made accurately and consistently.

There are similarities and differences between our modules and the modules that 148 used. Both our modules used one of the axles in each module as the "pivot axle" for the module to move up and down.

In our modules, the pivot axle was a live axle making it necessary to install bearings in the chassis to hold the axle. We also had bearings on the side plates of the module.

In 148's module, the pivot axle was a dead axle so the wheel on that axle had bearings in it. Their module side plates had bearing just like ours. Their pivot axle was screwed into the chassis with a 1/4-20 bolt at each end.

I think our modules had the same number of major parts as 148's modules so the complexity was similar. The big difference was manufacturability and serviceability. Our modules could only be partially assembled before installation. We had to insert the pivot axle, it's bearings, the wheel and all the spacers while it was in the chassis. It took a lot of time and effort to make any changes to the module. 148's could be fully assembled on the workbench and installed into the chassis by screwing in the two 1/4-20 bolts.
  #2   Spotlight this post!  
Unread 30-04-2014, 18:53
Aren_Hill's Avatar
Aren_Hill Aren_Hill is offline
Build Nifty Things
no team
Team Role: Mentor
 
Join Date: Feb 2005
Rookie Year: 2005
Location: Menlo Park CA
Posts: 1,220
Aren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond reputeAren_Hill has a reputation beyond repute
Re: Butterfly/ octocanum drives

Quote:
Originally Posted by philso View Post
We built an octanum system without regular access to CNC equipment. I do not recommend doing that unless you have an experienced machinist guiding the manufacturing effort and making sure the parts are being made accurately and consistently.

There are similarities and differences between our modules and the modules that 148 used. Both our modules used one of the axles in each module as the "pivot axle" for the module to move up and down.

In our modules, the pivot axle was a live axle making it necessary to install bearings in the chassis to hold the axle. We also had bearings on the side plates of the module.

In 148's module, the pivot axle was a dead axle so the wheel on that axle had bearings in it. Their module side plates had bearing just like ours. Their pivot axle was screwed into the chassis with a 1/4-20 bolt at each end.

I think our modules had the same number of major parts as 148's modules so the complexity was similar. The big difference was manufacturability and serviceability. Our modules could only be partially assembled before installation. We had to insert the pivot axle, it's bearings, the wheel and all the spacers while it was in the chassis. It took a lot of time and effort to make any changes to the module. 148's could be fully assembled on the workbench and installed into the chassis by screwing in the two 1/4-20 bolts.
The 148 module was actually just one long 1/4-20 bolt through a piece of VEXpro tube axle.
__________________
A guy who likes robots.
1625->3928->148->1296->971 oh dear
Closed Thread


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 20:56.

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