CEB Modeling: Difference between revisions

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*The top part of chamber is u-channel because it requires the strength. The bottom doesn't require the strength - as it is only the beginning of the compression stroke. Moreover, it needs to be longer  so that it encloses the entire compression plate assembly.
*The top part of chamber is u-channel because it requires the strength. The bottom doesn't require the strength - as it is only the beginning of the compression stroke. Moreover, it needs to be longer  so that it encloses the entire compression plate assembly.
Thanks again for the additional construction videos, I will be traveling the first couple of days this week for business.  I will get back to the frame details later this week.  The compression chamber and hopper make a lot more sense after looking at the additional construction information.  I have a couple of ideas for the mounting pins for the cylinders that could make disassembly a little easier.  I'll get sketches to you later this week.

Revision as of 23:26, 13 July 2008

Introduction

This page is dedicated to visual and performance modeling of the Liberator, OSE's open source, high-performance CEB press.

Finite Element Analysis

Calculation Symmetry

CEB symmetry.jpg

Bolt Strength

Bolt torquing can be measured by a torque wrench:

http://www.overstock.com/Auto-Parts/3-8-inch-Ratcheting-Torque-Wrench/3142342/product.html?SEC_IID=29607

3D Models

Starting to create the 3D model from previous sketches provided. We should take a look at using square washers on the back of the channels, they help to apply the forces evenly on the bolts and structure.

  • Where do I get these washers? Do they have ones that match the slope of the u-channel, or must I obtain them by cutting up another piece of u-channel?
Start of the modeling
More views
See large image for part numbers


Marcin, I see from the video that you provided that you have modified the chamber to use a 1/4 plate on the side. What was your reasoning?

  • The top part of chamber is u-channel because it requires the strength. The bottom doesn't require the strength - as it is only the beginning of the compression stroke. Moreover, it needs to be longer so that it encloses the entire compression plate assembly.

Thanks again for the additional construction videos, I will be traveling the first couple of days this week for business. I will get back to the frame details later this week. The compression chamber and hopper make a lot more sense after looking at the additional construction information. I have a couple of ideas for the mounting pins for the cylinders that could make disassembly a little easier. I'll get sketches to you later this week.