P18432: Plastic Bottle Rope Machine Improvements
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Detailed Design

Table of Contents

Team Vision for Detailed Design Phase

Team worked on finalizing the design for the different subsystems (stringer, rope machine and spools). Also the team worked on updating and consolidating the test plans to ensure that accurate tests were performed to meet engineering requirements. A plan for MSD II was created and is expected to change as time goes on.Also the team has updated the Bill of Materials to being ordering part for next semester.

Progress Report

Prototyping, Engineering Analysis, Simulation

Testing Rope Machine Design

Testing Rope Machine Design

Rope Machine Prototype

Rope Machine Prototype

Final Rope Made

Final Rope Made

Preliminary Testing of Knot Strength

Preliminary Testing of Knot Strength

Drawings, Schematics, Flow Charts, Simulations

Describe your design in enough detail for someone else to recreate it. Have you included assembly plans and user manuals? Your team may want to create separate nodes and directories within the Detailed Design Documents directory for CAD, schematics, or software
Cost effective spool

Cost effective spool

The spools were redesigned to be machined in house to reduce cost and were designed with corrosion resistant materials in order to reduce the up front cost of the system and to increase the overall lifetime of the system.

Single lane for string cutting

Single lane for string cutting

Lanes for string cutting are designed to be scalable where multiple spools can be turned by a single shaft cranked by an operator. This allows a single operator to create as much string at a time as they are capable of cranking.

Rope twisting assembly

Rope twisting assembly

The rope twisting assembly is designed to twist 30 strings together at a time. The materials chosen are mostly corrosion resistant and easy to machine to the desired specifications.

Bill of Material (BOM)

Rope Machine BOM

Rope Machine BOM

Spool BOM

Spool BOM

Stringer BOM

Stringer BOM

A live document with all three BOMs compiled together can be found here.

Test Plans

The Test Plans have been updated with elimination of unnecessary test as well as consolidation of plans as well. These updated test plans can be found here.

Design and Flowcharts

You can access this document here as an excel version or here for the visio version.
Process Flow Diagram Updated

Process Flow Diagram Updated

Risk Assessment

The updated Risk Assessment includes both increases and decreases in likelihood and severity, and therefore importance, for several different potential risks, along with additional potential risks that may occur during our testing and prototyping process, where the severity will be higher.
Updated Risk Assessment

Updated Risk Assessment

You can download the Excel document of the Risk Assessment here.

Design Review Materials

Plans for next phase

You can download the word version of the project plan for MSD II here or the Microsoft Project version here


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