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HVP_V1.html
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<!DOCTYPE html>
<html lang="en">
<head>
<title>HVP V1</title>
<meta charset="UTF-8">
<meta name="viewport" content="width=device-width, initial-scale=1">
<link rel="stylesheet" href="style/W3.css">
<link rel="stylesheet" href="style/Lato_font.css">
<link rel="stylesheet" href="style/font_awesome.css">
<style>
body {font-family: "Lato", sans-serif}
.mySlides {display: none}
</style>
</head>
<body>
<!-- Navbar -->
<div class="w3-top">
<div class="w3-bar w3-black w3-card">
<a class="w3-bar-item w3-button w3-padding-large w3-hide-medium w3-hide-large w3-right" href="javascript:void(0)" onclick="myFunction()" title="Toggle Navigation Menu"></a>
<a href="index.html" class="w3-bar-item w3-button w3-padding-large">Home</a>
<a href="https://meta-team.github.io/#HOME" class="w3-bar-item w3-button w3-padding-large w3-hide-small">RoboMaster Team Meta</a>
<a href="https://labs.ri.cmu.edu/moonranger/" class="w3-bar-item w3-button w3-padding-large w3-hide-small">MoonRanger</a>
<div class="w3-dropdown-hover w3-hide-small">
<button class="w3-padding-large w3-button" title="More">3D Printers </button>
<div class="w3-dropdown-content w3-bar-block w3-card-4">
<a href="#" class="w3-bar-item w3-button">HVP V1</a>
<a href="#" class="w3-bar-item w3-button">HVP V2</a>
<a href="#" class="w3-bar-item w3-button">Voron V0.!</a>
</div>
</div>
<div class="w3-dropdown-hover w3-hide-small">
<button class="w3-padding-large w3-button" title="More">eGPU Cases </button>
<div class="w3-dropdown-content w3-bar-block w3-card-4">
<a href="#" class="w3-bar-item w3-button">V1 for R9 nano</a>
<a href="#" class="w3-bar-item w3-button">V2 for RTX2080</a>
<a href="#" class="w3-bar-item w3-button">V3 for RTX2080</a>
<a href="#" class="w3-bar-item w3-button">V4 for RTX3070ti</a>
</div>
</div>
<a href="#" class="w3-bar-item w3-button w3-padding-large w3-hide-small">All projects</a>
<div class="w3-dropdown-hover w3-hide-small">
<button class="w3-padding-large w3-button" title="More">More </button>
<div class="w3-dropdown-content w3-bar-block w3-card-4">
<a href="#" class="w3-bar-item w3-button">Github Page</a>
<a href="#" class="w3-bar-item w3-button">Info</a>
</div>
</div>
</div>
</div>
<!-- Navbar on small screens (remove the onclick attribute if you want the navbar to always show on top of the content when clicking on the links) -->
<div id="navDemo" class="w3-bar-block w3-black w3-hide w3-hide-large w3-hide-medium w3-top" style="margin-top:46px">
<a href="#" class="w3-bar-item w3-button w3-padding-large" onclick="myFunction()">RoboMaster Team Meta</a>
<a href="#" class="w3-bar-item w3-button w3-padding-large" onclick="myFunction()">3D Printers</a>
<a href="#" class="w3-bar-item w3-button w3-padding-large" onclick="myFunction()">eGPU Cases</a>
<a href="#" class="w3-bar-item w3-button w3-padding-large" onclick="myFunction()">All projects</a>
</div>
<!-- Page content -->
<div class="w3-content" style="max-width:2000px;margin-top:46px">
<!-- The Content Section -->
<div class="w3-container w3-content w3-center w3-padding-64" style="max-width:800px" id="HVP_V2">
<h2 class="w3-wide">HVP V1</h2>
<p class="w3-opacity"><i>OCTOBER 10, 2020</i></p>
<img src="src/HVP_V1/1.jpg" style="width:100%">
<p class="w3-justify">This is the first generation of the hyper-velocity printer. A lot of time was spent designing,
manufacturing, and tuning the printer. Most of the parts were manufactured using the MPCNC. The printer was aimed
to achieve a considerably high printing speed. However, the printer was eventually disassembled for the second
generation because of the design flaw on the Z axis.</p>
<img src="src/HVP_V1/17.jpg" style="width:100%">
<p class="w3-justify">These are the hardware bought online. I chose a set of SKR V1.3 and raspberry pi as controller
and actually brought a mosquito hot end from U.S. There's also a set of close-loop controlled NEMA23 stepper
motors and PCB for stepper driver converting that made by myself.</p>
<img src="src/HVP_V1/14.jpg" style="width:100%">
<p class="w3-justify">I made most of the parts by the MPCNC and spent a lot of time optimizing the machining process
for better quality and shorter manufacturing time. In the picture is the x carriage manufactured by MPCNC.</p>
<img src="src/HVP_V1/11.jpg" style="width:100%">
<p class="w3-justify">Most of the printer frame was manufactured with black FR4 fiber glass boards. The FR4 has
similar property with carbon fiber board but with a much cheaper price and around 30% more weight. Also, the FR4
is more friendly to manufacture as the dust does no harm and settling much faster than carbon fiber.</p>
<img src="src/HVP_V1/3.jpg" style="width:100%">
<p class="w3-justify">Just want to show off the perfect wiring. :) So things in this picture worth sharing are the
customized PCB boards for stepper driver converting on the top right of the SKR and customized lead screw which is
different with the previous picture. So the reason of switching to regular lead screw instead of the original ball
lead screw is the ball lead screw creates a periodic horizontal shift every rotation. And since the tolerance of
the ball lead screw is much smaller than the regular lead screw, the shift was transferred to the printer bed, and
it created a periodic layer pattern on the print part.</p>
<img src="src/HVP_V1/4.jpg" style="width:100%">
<p class="w3-justify">So I found the problem by using a dial gauge. There was actually some uneven vertical error
every z move as well as the tolerance on the ball lead screw is so small that it drove the two linear rail
unevenly. Therefore, after trying several solutions such as adding springs between the leading nut and heat bed as
the previous picture shows, I found my self more into the 3Z self-leveling design. So the first generation of
hyper velocity printer was very unfortunately disassembled for its successor.</p>
<p class="w3-justify">After around half a year after I took the printer apart, HevORT on YouTube (MirageC now) post
a video about the horizontal shift on the ball lead screw. The cool dude designed a quite good solution to the
problem. <a href="https://www.youtube.com/watch?v=mqSQhwqSzvg" target="_blank">Link to YouTube video.</a></p>
</div>
<!-- End Page Content -->
</div>
<!-- Footer -->
<footer class="w3-container w3-padding-64 w3-center w3-light-grey w3-xlarge">
<a href="https://github.com/BeQuiet00" target="_blank"><img src="src/index/logo_big.png" style="width:10%"></a>
<p class="w3-medium"><a href="https://github.com/BeQuiet00" target="_blank">Bequiet00@Github</a></p>
</footer>
</body>
</html>