week 15

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<h3>Week 14</h3>
<p>Networking and communications.</p>
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<a href="construction.html"><img src="images/thumbs/construction.png" alt="" /></a>
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<a href="week15.html"><img src="images/thumbs/cnc.JPG" alt="" /></a>
<h3>Week 15</h3>
<p>Mechanical design.</p>
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Code: <br>
<a href="images/week14/ldrarduino.ino" download>LDR Code.</a><br>
For the assignment of the 12th week: Outputs devices, it will be divided into 6 parts: Output devices, board, programming, problems, group and Download.
<h2>What will it do?</h2>
The project that I am going to carry out is a steam generator for an iron, the project is oriented for an industrial sector or a clothing repair company, which requires a more powerful iron than a conventional one.<br>
<br><h2>Who's done what beforehand?</h2>
Looking in the files of the Fabacademy, I have not found anyone who has made a project like mine, but nevertheless there are many trademarks that are dedicated to manufacture the machine.<br>
In this case I will build on the model of the brand Stirline from Italy.
<a title="Stirline Steam machine"><img class="image center" src="images/week13/stirline.jpg" alt="" /></a>
As much as I searched the internet, I did not get the website or the technical specifications of the machine, so I will have to personally experience the operation.<br>
<br><h2>What will you design?</h2>
I am using a machine as a base, for that reason the design process will be to adapt it to the specifications I require. The machine has a wired logic, without any type of controller.
<a title="Steam machine"><img class="image center" src="images/week13/machine.jpg" alt="" /></a>
The main design will be in the electronic boards to perform the control and measurement with various sensors such as temperature, level and pressure.
The board must be ready to send information to a screen where vital information will be displayed.<br>
<br><h2>What materials and components will be used?</h2>
The materials needed to carry out my project are the following:<br>
<br><div class="row">
<li>Electronic control board.</li>
<li>Switches to turn on the machine and steam.</li>
<li>LED lights that give us a function indicator.</li>
<li>Thermal resistance, used to heat the water.</li>
<li>Sensors: temperature, pressure and level.</li>
<li>20x4 LCD screen to visualize the values of the measurement</li>
<li>Internal tank drainage valve.</li>
<li>Solenoid valve to activate steam passage.</li>
<li>An iron.</li>
<h2>Where will come from?</h2>
The materials used will come from the CIT laboratory, apart from the machine that I have, and other components will be purchased in local stores.<br>
<br><h2>How much will they cost?</h2>
When reusing some of the components of the machine, it will be invested in the rest of the materials, having an approximate cost of no more than $70.<br>
<br><h2>What parts and systems will be made?</h2>
The operation of the machine is basic, it has a switch that directly connects the iron and another switch that activates the internal resistance to start heating the water tank.<br>
The external structure will be made with Medium Density Fibreboard, the internal deposit will be made with stainless steel and will be lined with fiberglass to keep the heat. Some fasteners will be manufactured in 3D printers.<br>
In the following image you can see all the internal components of the machine, which will reuse a majority of them such as switches and resistance.
<a title="Internal parts"><img class="image center" src="images/week13/internal.jpg" alt="" /></a>
<br><h2>What processes will be used?</h2>
For the design the inventor software is used, you can see the prototype thought in<a href="week3.html"> week 3: Computer-Aided design</a>.<br>
The printed pieces will be used Makerbot printers, which were used in<a href="week6.html"> week 6: 3D Scanning and printing.</a><br>
The external and internal structure is made a first prototype with the laser cutter <a href="week4.html">(week 4: Computer controlled cutting)</a> and the final design with the Multicam 3000 <a href="week8.html">(week 8: Computer controlled machining).</a><br>
The manufacture of the control board will be used the Roland MDX540 <a href="week5.html">(week 5: Electronic design).</a><br>
For the programming of the board will be used the IDE Arduino 1.6.11.<br>
<br><h2>What questions need to be answered?</h2>
The main questions to ask are the following:
<div class="row">
<li>How does the machine work?</li>
<li>How do we go from a conventional ignition system to a control with a microcontroller?</li>
<li>What variables are necessary to measure?</li>
<li>What is the maximum temperature and pressure values that the tank should have to avoid accidents? </li>
<li>How much amperage consumes the resistance?</li>
<li>What power supply will we need?</li>
All these questions will be answered on the final project page.<br>
<br><h2>How will it be evaluated?</h2>
The way to evaluate the project is the correct operation of the iron without the use of steam. The temperature and pressure of the tank must be controlled to overcome critical levels.<br>
The manufactured parts must be in a correct manner and, finally, the consumption, the capacity of the power supply that is provided.
<title>Edwin Alvarez Valdivia</title>
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<h1><strong>Hello!, I am<br/> Edwin Alvarez</strong><br>
<a href="aboutme.html">About me</a>.<br>
<a href="finalproject.html">Final Project</a>.<br>
<a href="contact.html">Contact</a>.<br>
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<h1>Mechanical Design.</h1>
For the assignment of the 15th week: Mechanical Design, it will be divided into 3 parts: CNC Machine, Personal contribution and Download.<br>
<br><h2>CNC Machine</h2>
The objective of this week is to design and assemble the mechanical part of a CNC machine.<br>
Among all the possible designs that exist, we will design a machine whose X and Y axes move by means of a transmission of pulley and belt, while the z axis will move by means of a worm.
For a better movement we will also use some bearings to facilitate the work of the motors step by step, since these will oversee carrying out the movement.<br>
With the help of the director of the CIT we get all the necessary parts to be able to make the machine<br>
<a title="All parts"><img class="image center" src="images/week15/parts.jpg" alt="" /></a>
Between Danny, Italo and I will design the missing pieces for the correct functioning, even when performing the tests, we can modify some piece for its better functioning.<br>
<br><h2>Personal contribution</h2>
In my personal contribution I made the assembly of the mechanical parts of the machine, including the stepper motors. Here are some pictures of the assembly of the parts.<br>
Here is the X plate.
<a title="X plate"><img class="image center" src="images/week15/x_plate.jpg" alt="" /></a>
Here is the first part of Y plate.
<a title="Y plate"><img class="image center" src="images/week15/y_plate1.jpg" alt="" /></a>
Here is the second part of Y plate and pieces of Z part.
<a title="Y and Z plate"><img class="image center" src="images/week15/y_z_plate.jpg" alt="" /></a>
Finally, here are all the parts that I assemble.
<a title="All parts"><img class="image center" src="images/week15/all_parts.jpg" alt="" /></a>
Additionally, I am designing a board using the atmega328 to connect the CNC software and the drivers for the correct operation of the machine.
<a title="Driver"><img class="image center" src="images/week15/driver.jpg" alt="" /></a>
<h6>Source: https://naylampmechatronics.com/drivers/268-driver-pap-thb6064ah-4a.html</h6>
Since only the mechanical design is requested, I only made the schematic of the circuit
<a title="Schematic"><img class="image center" src="images/week15/schematic.jpg" alt="" /></a>
I relied on the design of the Arduino CNC shield.
<a title="CNC Shield"><img class="image center" src="images/week15/cncshield.jpg" alt="" /></a>
<h6>Source: http://makercommunity.info/photo/view/23/latest</h6>
This design is intended to be used for the final operation of the machine.
All information about the machine and its demonstration of operation can be seen on the page of the laboratory.<br>
To see all the documentation of the group work, you can visit the <a href="http://fabacademy.org/2019/labs/cit/week15.html">CIT page.</a>
You can download this files Here: <br>
<a href="images/week14/arducnc.sch" download>Schematic.</a><br>
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