tag:blogger.com,1999:blog-16991113055181925052024-03-19T19:09:13.512+08:003D Printer DIY 1233D Printer DIY 123, 記錄自組3d打印機Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.comBlogger11125tag:blogger.com,1999:blog-1699111305518192505.post-32165770210378430282015-12-11T12:44:00.003+08:002015-12-11T12:47:16.445+08:00CoreXY X軸,Y軸校正方法 - Part III 化繁為簡長篇大論完, 明白了CoreXY 移動的原理,<br />
由於工作和個性問題, 習慣不停歸納簡化, 沉澱了一段時間, 最後得到了這個簡單到"會俾人打"的方法:- <br />
<br />
<h2>
工具:-</h2>
<ol>
<li>電表</li>
<li>拉尺</li>
<li>Marker </li>
</ol>
<a name='more'></a><br />
<ol>
</ol>
<ol>
</ol>
<h2>
方法</h2>
<ol>
<li> 兩隻步進一定要用同一型號,電壓週至一樣, 當然要冇壞分別上兩條皮帶, 大約位置Ok,注意鬆緊要合識, 用Marker,mark住皮帶兩端接獨固定位上位置,</li>
<li>用拉尺量度每條皮帶上兩端marker 的長度, 把兩條皮帶量度的長度加埋除以2<br />
e.g. (173+177)/2 =175</li>
<li>
再用拉尺於每條皮帶上量度出新的位置(175), 用marker mark住, 我會這樣做(175的話, 會mark 170,175同180)</li>
<li>
再分別上兩條皮帶, 位置就是計出來的那個marker 位.</li>
<li>
上皮帶後, 有鬆就轉用170位, 太緊就轉用180位.</li>
<li>
印cube測試, XY的誤差應該會少於0.05mm</li>
<li>
再Tune Steps</li>
</ol>
<br />
<h4>
** 用呢個方法的先決條件係:</h4>
<ol>
<li>X軸橫水平要正確</li>
<li>Y軸兩面的光軸可滑動距離要一樣.</li>
<li>Motor固定和Bearing固定件要夠力, 穩陣, 唔會拉得動*** 最重要, 呢4件件一拉得動, 點tune都唔會啱..</li>
</ol>
<a href="http://3dprinterdiy123.blogspot.hk/2015/07/corexy-x-part-i.html" target="_blank">CoreXY X軸,Y軸校正方法 - Part I</a> <br />
<a href="http://3dprinterdiy123.blogspot.hk/2015/07/corexy-x-part-ii.html" target="_blank">CoreXY X軸,Y軸校正方法 - Part II</a><br />
<ol>
</ol>
Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0tag:blogger.com,1999:blog-1699111305518192505.post-2915957097784131562015-11-04T11:06:00.001+08:002015-11-04T11:08:25.251+08:00常見Z 軸問題 - 層疊出錯<b>症狀: 有溜隙, 有差距,失去部分或一整層層疊。</b><br />
<br />
<div class="separator" style="clear: both; text-align: left;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYfay8cRrChaReWdRUDHk6Q4bRbzHDAGym4zRnLJvZnf9kPqnTBtY8W-9a8ioq3G0v2Y322Cu9z2c1mIxaxqc0yis_XlUQTBSEAj9zykTlJYSwC-3aqH-3mHbKkKjPZ7sIV2kgX4ImK8Lc/s1600/1510300928392abde4a55427e7.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="225" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhYfay8cRrChaReWdRUDHk6Q4bRbzHDAGym4zRnLJvZnf9kPqnTBtY8W-9a8ioq3G0v2Y322Cu9z2c1mIxaxqc0yis_XlUQTBSEAj9zykTlJYSwC-3aqH-3mHbKkKjPZ7sIV2kgX4ImK8Lc/s400/1510300928392abde4a55427e7.jpg" width="400" /></a></div>
<br />
<br />
<b>解決方法</b>(多謝 HKEPC的g2david師兄,給我解決指引)<br />
1.首先要確定是否同一高度. 如果印幾隻野都同一高度. 証能明 Z-axis 絲杆/同步帶有事.<br />
<br />
<ul>
<li>檢察Z步進有冇問題,會否轉動不順暢,有否過熱, 電壓不足的情況.</li>
<li>更換質量好絲杆 (如T8-1mm 尋程)能解決Z層高低不不一的問題.</li>
<li>如是同步帶的話,收緊同步帶,檢察同步帶輪齒是否清潔.</li>
</ul>
<br />
2.確定所有層疊是直線. <br />
<ul>
<li>檢察Z層水平,正碓的水平(和XY軸)能改善層疊無成直線的問題.</li>
</ul>
<br />
3.出膠量平均<br />
<br />
<ul>
<li>出絲輪有沒有滑牙</li>
<li> bearing有冇鬆</li>
<li>Extruder本身有沒有設計問</li>
<li>PLA/ABS的質量 </li>
</ul>
4.Z平台有否震動過大<br />
<ul>
<li>加強平台的剛性</li>
<li>改雙Motor升降</li>
</ul>
<br />
5.檢察銅頭質量,出孔位置正中.<br />
<br />
<br />
**調整後, 大大的改善了很多...<br />
<br />
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYr8z-Fbnw7bx3Dr_XXJ5UxD6EL5TM1o_qOyrZjCt-vQd4Vp4f8sdiN96SviBdJpSXV5Vl-1oPVB9T8du1A8BzkPTwveYK9jL9ey7_wjEuCOA9hPPa_QH6LPjZu6c_Lvhp69ly4uf6M8VA/s1600/15103022271214e4d3e9974f60.jpg" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjYr8z-Fbnw7bx3Dr_XXJ5UxD6EL5TM1o_qOyrZjCt-vQd4Vp4f8sdiN96SviBdJpSXV5Vl-1oPVB9T8du1A8BzkPTwveYK9jL9ey7_wjEuCOA9hPPa_QH6LPjZu6c_Lvhp69ly4uf6M8VA/s320/15103022271214e4d3e9974f60.jpg" width="247" /></a></div>
<br />
<br />
<br />Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0tag:blogger.com,1999:blog-1699111305518192505.post-28009346658560806432015-10-02T14:03:00.003+08:002015-10-15T15:54:05.796+08:00Z-Probe 近接開關距離調整 - inductive proximity sensor (接近開關) Part II自己一直對Z的零位調整十分困惑,每次要調整時就去轉動精度沒有很高的螺絲帽,這方法一來很不便,二來收緊螺絲帽的同時sensor也會有多少的移位,很不準確.<br />
<br />
<h3>
Marlin 的Z_PROBE_OFFSET_FROM_EXTRUDER</h3>
一直都知Marlin config中有這個設定可用來修正Z軸高度的座標 (零減掉這個設定值),這比去轉動螺帽方便, 但每次也得去改Firmware, 太花時間了, 也就一直它他設做零,去轉動那些螺絲帽算去.<br />
<br />
<h3>
G-Code M851 </h3>
後來有次使用M503檢查EEPROM無意中發現了EEPROM中有Z probe offset的數值,和M851這個G-Code, 翻查Marlin offical文件沒有這code的存在,最後在reprap forumn找到了,原來這是1.03 Dev後加入的,offical文件還沒更新.使用方法:<br />
<br />
M851 Z-x.y<br />
<br />
<a name='more'></a><br />
<br />
<h3>
調整步驟</h3>
(引用了這篇中的方法: <a href="http://gsyan888.blogspot.hk/2015/05/3dp-z-probe-offset-from-extruder.html" target="_blank">雄: 3DP : 近接開關距離與靭體設定調整:</a>) <br />
<h4>
</h4>
<h4>
1.Z_PROBE_OFFSET_FROM_EXTRUDER設定為零</h4>
由於我們會使用 EEPROM存儲數值, Source Code中設要為零和打開EEPROM功能.<br />
<h4>
</h4>
<h4>
2.調整感應開關位置</h4>
首先要調整 Z-min 的感應開關安裝位置,讓感應器觸發時,噴頭高於平台,但沒碰到列印平台。見下圖:-<br />
<div class="separator" style="clear: both; text-align: center;">
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<br />
<br />
A: 感應開關要比噴頭高 - 這樣Sensor才不會在打印中碰到膠件<br />
B: 平台不要碰到噴頭, 留大約1-2mm就可, 而B就是Z offset 的距離<br />
C: 感應開關的工作距離<br />
<br />
<h4>
3.清除EEPROM</h4>
利用以下Gcode清除之前存於EEPROM中的數值<br />
<br />
M851 Z0 ; 設定Z-probe offset 為0<br />
M500 ; 存入EEPROM中<br />
<h4>
4.HOME (G28)</h4>
執行G28一次讓三軸歸零( X、Y、Z)。 <br />
<br />
<h4>
5.精測Z-Offset</h4>
現在我們會測量z-probe offset (B)的數值, 方法中會用到G92,和一般的調高方法.<br />
AutoHome歸零後, 現在的Z一定會是0, 我們無法以一般移動指令讓噴頭和平台更接近.不過我們可使用G92來使Z大過0,Z便能再次移動. 做法如下<br />
<br />
G92 Z10 ;把現在的Z (0)設定為10<br />
<br />
再來,利用列印程式的「手動模式」或是 G-codes,慢慢調低噴頭高度,搭配「A4 影印紙」,找出印表機噴頭的最佳高度,找到後就能計算出。<br />
<br />
<h4>
6.計算Z-probe offset </h4>
以前面作為例子,找到最佳的高度時,如果此時 Z 軸的高度是 8.73mm ,計算一下目前的高度減掉原來的高度:<br />
<br />
<blockquote class="tr_bq">
8.73 - 10 = <b>-</b>1.27</blockquote>
答案 <b>-</b>1.27就是我們要的Z-probe offset了<br />
<br />
<h4>
7.把Z-probe offset寫入EEPROM</h4>
M851 Z<b>-</b>1.27 ; 設定Z-probe offset 為<b>-</b>1.27 (B的距離)<br />
M500 ; 存入EEPROM中<br />
<h4>
8.測試</h4>
執行G28一次讓三軸歸零( X、Y、Z), 這次Z會顯示為1.27 (你所計算出來的數值).以後每次AutoHome也會停於這位置.這時再埶行 G1 Z0就可讓Z軸歸零.<br />
<br />
<h4>
9.更改切片軟件Start-Gcode (如果有用G29)</h4>
Marlin的Z-Probe Offset配上G29(Z-Probe平臺自動補正)功能有一個小問題發生, 就是G29預設Z己經歸零的,所以一定會跟住G28做,如:<br />
<br />
.....<br />
<br />
G28 ;Home x,y,z<br />
G29 ;Auto bed leveling<br />
.....<br />
<br />
但用了Z-Probe Offset後, G28之後Z將不是0.這時我們要加入G1 Z0來使Z真正的歸零後才可行G29,如<br />
<br />
.....<br />
<br />
G28 ;Home x,y,z<br />
G1 Z0 ; move Z to 0 position<br />
G29 ;Auto bed leveling<br />
.....<br />
<br />
<br />
這方法很方便, 每次調整只需要重覆3-7就可以..<br />
<br />
<a href="http://3dprinterdiy123.blogspot.hk/2015/06/z-probe-inductive-proximity-sensor.html" target="_blank">Z-Probe 平臺自動補正(自動調平) - inductive proximity sensor (接近開關)</a><br />
<h4>
</h4>
Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0tag:blogger.com,1999:blog-1699111305518192505.post-72273890378562344472015-08-12T16:15:00.000+08:002015-08-18T12:59:32.280+08:00Wifi 3D Printer (使用ESP8266 ESP-01)本篇介紹如何在 Arduino Mega 2560, RAMPS 1.4加Marlin下使用ESP8266 ESP-01 Wifi 連線打印.<br />
<br />
<h2>
零件</h2>
1. ESP8266 ESP-01 <br />
<ul>
</ul>
2. 5V->3V Regulator 模組<br />
<br />
3. <span class="st">分壓電路/</span><span class="st"></span>電平轉換器<span class="st"></span><br />
<ul>
<li><span class="st">分壓電路</span>電阻 220, 1K x1 , 1.5K/2Kx1, 10K x1</li>
<li>電平轉換模組</li>
</ul>
4. USB-TTL FTDI(支援3.3v )/Arduino (用來燒錄Firmware到ESP8266)<br />
<br />
<br />
<br />
<iframe allowfullscreen="" frameborder="0" height="315" src="https://www.youtube.com/embed/RYIIa3U6Xzo" width="420"></iframe>
<br />
<a name='more'></a><br />
<br />
<h2>
設定ESP8266</h2>
<h3>
下載 </h3>
<ul>
<li>NodeMCU Firmware</li>
</ul>
<a href="https://github.com/nodemcu/nodemcu-firmware/releases">https://github.com/nodemcu/nodemcu-firmware/releases</a><br />
<ul>
<li> Firmware Flasher</li>
</ul>
<u><b>Windows</b></u><br />
<a href="https://github.com/nodemcu/nodemcu-flasher/raw/master/Win32/Release/ESP8266Flasher.exe" target="_blank">Win32 </a>Windows Flasher<br />
<a href="https://github.com/nodemcu/nodemcu-flasher/raw/master/Win64/Release/ESP8266Flasher.exe" target="_blank">Win64</a> Windows Flasher <br />
<br />
<u><b></b></u> <u><b>Linux</b></u><br />
<a href="https://github.com/themadinventor/esptool">https://github.com/themadinventor/esptool</a><br />
<ul>
<li>ESP8266 TCP to Serial Bridge (AP Mode)</li>
</ul>
<a href="http://www.roboremo.com/esp8266-tcp-to-serial.html" target="_blank">http://www.roboremo.com/esp8266-tcp-to-serial.html </a><br />
<ul>
<li>ESP8266 TCP to Serial Bridge (Station Mode)</li>
</ul>
<a href="http://www.viclands.com/init.lua" target="_blank">下載</a><br />
<ul>
<li>ESPlorer</li>
</ul>
<a href="https://github.com/4refr0nt/ESPlorer">https://github.com/4refr0nt/ESPlorer</a><br />
<h3>
接線圖</h3>
<h4>
使用USB-TTL FTDI </h4>
<ul>
<li>Jumper 設定為3.3v </li>
</ul>
<div style="text-align: center;">
<img border="0" height="131" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjQQV-6DgRwZEA2K_xpPvl6CAcwUAIhhQ1ZXPQEkeIQud9uaeD3ArvlEVbdaL9O834p1jfs3RWbfKXQVJ6hHxOxCdoHDFuu3iUi1IV2FV5QbJpKj4S5RNXLmbhf-CmUDZtOXGGVw2ahq5Am/s320/esp8266-reflash-firmware.png" width="320" /></div>
<h4>
使用ArduinoUNO R3</h4>
<ul>
<li>要先造好ESP8266 Adaptor </li>
<li>Adaptor上GPIO0 jumper要接上</li>
<li>Adaptor VCC -> Arduino 5V</li>
<li>Adaptor GRN -> Arduino GRN</li>
<li>Adaptor TX -> Arduino RX0(不要直接接上ESP8266的RX, 會燒的)</li>
<li>Adaptor RX -> Arduino TX0 </li>
<li>Arduino RST -> Arduino GRN</li>
</ul>
<h4>
燒錄NodeMCU步驟</h4>
<h4>
Windows</h4>
<br />
<ul>
<li>用USB線接上電腦和USB-TTL FTDI</li>
<li>開啟Windows Flasher</li>
</ul>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBlTCdhgpC4rU4Fuzow8pjA26oHsd_CYBIVBkofGjcNtsXGGXa7N6-ZJaY7BdRJ3wqDEwjwU12f4Ad3lsDQaODdISkWddyFd2ZuOqxRhXRj-AmUeAKDfKH-Lcs0e89gHATaReI8HQakewX/s1600/nodemcu_flaser.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="185" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEiBlTCdhgpC4rU4Fuzow8pjA26oHsd_CYBIVBkofGjcNtsXGGXa7N6-ZJaY7BdRJ3wqDEwjwU12f4Ad3lsDQaODdISkWddyFd2ZuOqxRhXRj-AmUeAKDfKH-Lcs0e89gHATaReI8HQakewX/s320/nodemcu_flaser.png" width="320" /></a></div>
<ul>
<li>選擇COM Port</li>
<li>選擇Frimware</li>
</ul>
<div class="separator" style="clear: both; text-align: center;">
<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFkd2-Rvj0LSw1jm-JG49iPXMO4CXVG5elYlqeMCAEjf3SIsnxobGRaEonabLjBztGVFELaYi9dYEIsXZ4xdGHDyFtN5gCTUkTcJxNkA6ikKAQ1TQp5tpEdRE1VyySf5h2UqAmd56yROqe/s1600/687474703a2f2f693635392e70686f746f6275636b65742e636f6d2f616c62756d732f75753331362f766f77737461722f4e6f64654d43552d466c61736865722d53657474696e672e706e67.png" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" height="186" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEgFkd2-Rvj0LSw1jm-JG49iPXMO4CXVG5elYlqeMCAEjf3SIsnxobGRaEonabLjBztGVFELaYi9dYEIsXZ4xdGHDyFtN5gCTUkTcJxNkA6ikKAQ1TQp5tpEdRE1VyySf5h2UqAmd56yROqe/s320/687474703a2f2f693635392e70686f746f6275636b65742e636f6d2f616c62756d732f75753331362f766f77737461722f4e6f64654d43552d466c61736865722d53657474696e672e706e67.png" width="320" /></a> </div>
<ul>
<li>之後回到Operation板面,按Flash制</li>
</ul>
<h4>
Linux</h4>
<ul>
<li><code>sudo python setup.py install</code></li>
<li><code>sudo python esptool.py --port /dev/ttyUSB0 write_flash 0x00000 The_Path_To_The_NodeMCU_Firmware.bin</code> </li>
<li>請更改 <code>/dev/ttyUSB0</code>和<code>The_Path_To_The_NodeMCU_Firmware.bin</code></li>
<li><code><i>***我用這方法是失敗的,最後找部Windows機來做。。。</i></code></li>
</ul>
<h3>
</h3>
<h3>
加入ESP8266 TCP to Serial Bridge功能 </h3>
<ul>
<li>打開ESPlorer加入ESP8266 TCP to Serial Bridge的Code (init.lua, File名一定要是init.lua) </li>
<li>更改合適的SSID, Wifi Password, IP, Netmask 和Gateway,連線速率改為 115200</li>
<li>按Save to ESP8266上傳到ESP8266<div class="separator" style="clear: both; text-align: center;">
<a href="http://i0.wp.com/esp8266.ru/wp-content/uploads/ESPlorer-panels.png?resize=625%2C364" imageanchor="1" style="margin-left: 1em; margin-right: 1em;"><img border="0" src="http://i0.wp.com/esp8266.ru/wp-content/uploads/ESPlorer-panels.png?resize=625%2C364" height="186" width="320" /></a></div>
</li>
</ul>
<h3>
連接ESP8266和Arduino/RAMPS 1.4</h3>
<h3>
ESP8266 Adaptor</h3>
<h3>
BOM, 另加LM117-33供電模組 </h3>
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我用了這一隻LM117-33, 因ESP8266要200ma3.3V, Arduino Mega 3.3得50ma, 所以要獨立由5V出電轉3.3V.<br />
<u>線路圖</u> <br />
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<u>PCB</u><br />
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<div class="wsite-content-title" style="text-align: center;">
<span style="color: #415161; font-style: normal; font-weight: 700; text-decoration: none;"><a href="https://123d.circuits.io/circuits/941540-esp8266-adaptor/embed#pcb" target="_blank">123D Circuits Link</a></span></div>
<br />
<h3>
<b>連接RAMPS</b></h3>
<h4>
冇用Display - 直接可用Serial2(D16,D17)</h4>
<table border="1" cellspacing="0" class="t_table" style="width: 305px;"><tbody>
<tr><td>RAMPS</td><td>ESP8266 adaptor</td></tr>
<tr><td>aux4-D16</td><td>RX</td></tr>
<tr><td>aux4-D17</td><td>TX </td></tr>
<tr><td>GRN</td><td>- </td></tr>
<tr><td>+</td><td>+ </td></tr>
</tbody></table>
<br />
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<h4>
用LCD-會比較煩</h4>
aux4中的D16和D17由LCD佔用,Serial2不能用,而Serial1(D18,D19),Serial3(14,15). 要重新編過,
由於Delta機ZMin同Max多數都要同時使用,所以用Serial3(14,15)會方便少少, 但remap 後x,y
endstop各只能用一個<br />
如Delta remap後Xmin=YMax, XMax不變,<br />
CoreXY remap後 Xmin=Xmin, XMax=YMin<br />
(其他機種要自己諗諗點Map)<br />
<table border="1" cellspacing="0" class="t_table" style="width: 305px;"><tbody>
<tr><td>RAMPS</td><td>ESP8266 adaptor</td></tr>
<tr><td>Y Min</td><td>RX</td></tr>
<tr><td>YMax</td><td>TX </td></tr>
<tr><td>GRN</td><td>- </td></tr>
<tr><td>+</td><td>+ </td></tr>
</tbody></table>
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<h3>
<b>修改Marlin</b></h3>
1. Configuration.h<br />
#SERIAL_PORT X // 冇Display X =2,使用LCD X =3<br />
#define BAUDRATE 115200<br />
<br />
<br />
2. pins_RAMPS_13.h (用LCD才要改)<br />
Delta 機(使用XMax和YMax)<br />
#define X_MIN_PIN -1 // Disable<br />
#define X_MAX_PIN 2<br />
#define Y_MIN_PIN -1 // Disable<br />
#define Y_MAX_PIN 3<br />
<br />
CoreXY 機(使用XMin和YMin)<br />
#define X_MIN_PIN 3<br />
#define X_MAX_PIN -1<br />
#define Y_MIN_PIN 2<br />
#define Y_MAX_PIN -1<br />
<br />
改好後接上USB線,upload 到 Arduino Mega, upload之後不能用USB打印, 要用TCP/IP連接<br />
<br />
<br />
<h3>
<b>設定Host Software</b></h3>
<u>RepetiveHost</u><br />
1.Printer Settings -> Connector 選TCP/IP Connection<br />
2. IP Address -> 設定ESP8266時輸入的IP<br />
3. Port -> 設定ESP8266時輸入的Port (9876)<br />
<br />
<u>Pronterface</u><br />
未用過, 但好似有相同的setting<br />
<br />
<u>其他</u><br />
Windows 可用 HW VSP3 - Virtual Serial Port 轉駁TCP/IP<br />
<a href="http://www.hw-group.com/products/hw_vsp/index_en.html" target="_blank">http://www.hw-group.com/products/hw_vsp/index_en.html</a><br />
<br />
Linux可用<br />
socat pty,link=/dev/virtualcom0,raw tcp:192.168.0.xxx:9876&<br />
<br />Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0tag:blogger.com,1999:blog-1699111305518192505.post-83449275789766638822015-07-03T17:13:00.001+08:002015-12-11T12:45:51.867+08:00CoreXY X軸,Y軸校正方法 - Part II 步驟<span style="background-color: red;">注意: 校正前請檢桓X,Y motor的電壓也要一致的!! </span><br />
<br />
X,Y軸校正步驟涉及三個步驟和兩方面的調整:- <br />
要調整的兩方面是<br />
1. 兩條的同步帶拉力要相若, 這會影响XY軸的比例<br />
2. X,Y軸步數(STEP UNIT)的調整<br />
<br />
<br />
三個步驟為<br />
<br />
1.打印立方體<br />
校正前,首先要一個10mm的正立方體, 可以自己劃, 又可以下載回來, 我自己是用這個, 貪佢有方向標記:<br />
<br />
<a href="http://www.thingiverse.com/thing:667281">http://www.thingiverse.com/thing:667281</a><br />
<br />
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<br />
有了這個模型後, 我們可以把它打印出來, 但要注意把模型在Z軸上轉45度角 (通常我會改X,Y Z 的Scale做 X:2, Y:2 ,Z:0.2, 就會印出一個20mm x 20mm x 2mm)<br />
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<br />
<br />
<br />
<a name='more'></a>打印出來後, 我們就可以量度實物的長度, 紅色係用來調正ΔA, 黃色用來調正ΔB.<br />
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2.調整比例- 調整同步帶拉力<br />
上一篇做了一些簡單的計算後, 我們得知在CoreXY中, 不只要調整"Step Per Unit", 更中要的是調整兩組對抗的拉力, 這兩組對抗的拉力就是兩條同步帶的鬆緊(Tension).<br />
<br />
調整方法: <br />
打印了立方體出來後, 量度實物的ΔA(紅圈)和ΔB(黃圈), 如果ΔA, ΔB不是相同的話就要調較一下. (這會影响X,Y 比例和直角位準唔準).<br />
<br />
如ΔA數值較大, 代表ΔA的同步帶拉力較大, 可放鬆ΔA那邊的帶或拉緊ΔB那邊的帶, 如ΔB數值較大則相反. 調整後再打印一次直到誤差至少少於0.05mm, 或者自己能接受的誤差.<br />
<br />
3. 調整Step Unit<br />
比例調整正確後一可以調整Step Unit, 因為CoreXY係以拉力對抗的方式作運動, 理論上X,Y的step_per_unit 應該一樣, 除非兩軸用了不同規格的步進(可以的, 不過強烈見議使用相同的).<br />
<br />
計算:<br />
紅色邊模型為10mm, 實物為11mm<br />
校正 = 10/11 * [x steps in config file]<br />
<br />
<br />
得到計算結果後, 可先用M92測試, 正確後才寫到source code 中.<br />
<br />
Example:<br />
<br />
校正X = 10/11 * 80 (一般GT2同步帶 + A4988) = 72.23<br />
<br />
輸入: M92 X72.23 Y72.23<br />
<br />
重復各步驟, 直至打印結果滿意為止.<br />
<br />
滿意後把新數字改入firmware內<br />
<br />
總結<br />
1. 調整同步帶拉力(tune tension)係調整x, y比例,<br />
2. 啱左比例先再調整大小( step per unit).<br />
3. 個45度印法能把兩個步進本身的誤差分離, 令到大家知道邊一邊步進要調整<br />
<br />
<a href="http://3dprinterdiy123.blogspot.hk/2015/07/corexy-x-part-i.html" target="_blank">CoreXY X軸,Y軸校正方法 - Part I </a><br />
<a href="http://3dprinterdiy123.blogspot.hk/2015/12/corexy-x-part-iii.html" target="_blank">CoreXY X軸,Y軸校正方法 - Part III </a> <br />
<br />Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0tag:blogger.com,1999:blog-1699111305518192505.post-24346925513851293262015-07-03T16:38:00.000+08:002015-07-17T14:53:20.809+08:00CoreXY X軸,Y軸校正方法 - Part I砌好了的SmartRapCore大至上運作良好, 但X,Y的比例上有點問題, 要校正一下步數, 在網上找了很久也找不到方法, 最後再看一看 Equation, 想到了.<br />
<br />
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<br />
<a name='more'></a><span style="font-size: small;">先說說理論, 如果係你是實幹型的 <span><a href="http://3dprinterdiy123.blogspot.hk/2015/07/corexy-x-part-ii.html">直接按這裡看步驟</a></span>. </span><br />
<br />
方法是, 如果我要校正ΔA, 就要令ΔB不轉動, 反之要校正ΔB, 就要令ΔA不轉動.<br />
即是這樣:<br />
ΔX = 1/2(ΔA+ΔB) <br />
ΔY = 1/2(ΔA - ΔB) <br />
<br />
1. ΔA=20mm , ΔB= 0mm<br />
<br />
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2. ΔA = 0mm , ΔB= 20mm<br />
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<br />
<br />
由1和2可見, 只有ΔA移動時, 噴頭會沿正45度線移動, 而只有ΔB移動時, 噴頭會沿負45度線移動.<br />
<br />
啊!! 原來CoreXY 係"向量"運動, 如下圖: 藍色向量= 紅拉力+橙拉力, 所以要紅=橙先可以令個向量係中間(45度).<br />
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有了這個, 我們就可以很簡單的進行校正了.<br />
校正步驟, 請看<span style="font-size: large;"><a href="http://3dprinterdiy123.blogspot.hk/2015/07/corexy-x-part-ii.html">下一篇 - CoreXY X軸,Y軸校正方法 - Part II 步驟</a></span>.<br />
<br />Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0tag:blogger.com,1999:blog-1699111305518192505.post-76039519119095098112015-06-29T11:06:00.001+08:002015-10-15T15:49:50.133+08:00Z-Probe 平臺自動補正(自動調平) - inductive proximity sensor (接近開關)Z-Probe, 自動調平的作法有很多種的, 可略分為接觸式和非接觸式兩種方法<br />
<br />
本文主要講用Inductive proximity sensor (<span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">接近開關</span></span>)的非接觸式的方法. 本人使用的是LJ18A3-8-Z/BX, 其他BX的型號大致一樣 .<br />
<br />
Inductive proximity sensor是用於檢測與金屬的距離的探測器, 有好多唔同的型號, 分別在於直徑, 幾多條線, 檢測距離, 電壓, <span class="short_text" id="result_box" lang="zh-TW"><span title="常开
">常開/</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="常闭">常閉</span></span>和<span class="short_text" id="result_box" lang="zh-TW"><span title="三极管">三極管類型(NPN, PNP)</span></span><br />
<span class="short_text" id="result_box" lang="zh-TW"><span title="三极管"><br /></span></span>
<span class="short_text" id="result_box" lang="zh-TW"><span title="三极管">如 </span></span>LJ<span style="color: red;">18</span>A3-<span style="color: lime;">8</span>-Z/<span style="color: blue;">B</span><span style="color: magenta;">X</span> - 中<span style="color: red;">18</span>是直徑, <span style="color: lime;">8</span>是檢測距離, B是<span class="short_text" id="result_box" lang="zh-TW"><span title="常开
">常開(A是</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="常开
"><span class="short_text" id="result_box" lang="zh-TW"><span title="常开
">常</span></span></span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="常开
"><span class="short_text" id="result_box" lang="zh-TW"><span title="常开
"><span class="short_text" id="result_box" lang="zh-TW"><span title="常闭">閉</span></span></span></span>), X是NPN(Y是PNP)..</span></span><br />
<span class="short_text" id="result_box" lang="zh-TW"><span title="常开
"><br /></span></span>
<span class="short_text" id="result_box" lang="zh-TW"><span title="常开
"><b><u></u></b></span></span><br />
<a name='more'></a><span class="short_text" id="result_box" lang="zh-TW"><span title="常开
"><b><u>PNP 和NPN的分別</u></b></span></span><br />
<span class="short_text" id="result_box" lang="zh-TW"><span title="三极管"><span class="short_text" id="result_box" lang="zh-TW"><span title="三极管"><span class="short_text" id="result_box" lang="zh-TW"><span title="三极管"><span class="short_text" id="result_box" lang="zh-TW"><span title="三极管">PNP和</span></span></span></span>NPN是</span></span>三極管類型</span></span>, 圖如下<br />
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<br />
NPN輸出為負電,<br />
一般要接到負載的負端。<br />
一般日系產品大部份為NPN輸入<br />
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PNP輸出為正電,
<br />
一般要接到負載的正端。<br />
一般歐美系產品大部份為PNP輸入<br />
<br />
<br />
<div class="tb-main-title" data-title="LJ18A3-8-Z/BX 正品沪龙传感器 接近开关 三线24V常开NPN 检测8MM">
<br /></div>
<div class="tb-main-title" data-title="LJ18A3-8-Z/BX 正品沪龙传感器 接近开关 三线24V常开NPN 检测8MM">
兩種都可以到偉大的淘寶中找到.</div>
<br />
<br />
<h3>
使用方法</h3>
一般買到的<span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">接近開關電壓多數為6-24/36V,而Arduino 的供電只有5V,要找合適</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">接近開關,加上不同的接線方法才可:</span></span> <br />
<h4>
合適的<span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">接近開關</span></span></h4>
PNP/NPN都可以,但電壓要留意如下:-<br />
<ol>
<li><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">可</span></span>找5V供電的, 但到現在我只找到一種 LJ12A3-2-Z/BX, 但</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">檢測距離只有2mm,太近了,一般要有4mm以上才可以.</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"> </span></span></li>
<li> <span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">買</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">6-24/36V, </span></span>直接用5V供電, 是的5V是可以的, 但</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">檢測距離會只有80%, 即最少要買有6mm的</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">檢測距離的才可以,不過還有一樣要留意的是,</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">接近開關對鋁(熱床和平台多數都是用</span></span></span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">鋁</span></span></span></span>)的敏感度較低,</span></span> 一般只有60%的</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">距離, 即5V供電下用</span></span>LJ18A3-8-Z/BX也只有3.8mm的有效距離. <br /> -解決方法可以到五金店買鍚紙膠紙貼在鋁之上, 可只貼檢測點或全幅.</li>
<li><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">買</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">6-24/36V, </span></span>由</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">火牛</span></span>供</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">12V</span></span>電,但singal要加電阻/用Regulator降壓到3.3-5V.</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"> </span></span>接法比煩, 但最正宗.</li>
</ol>
<h4>
接線方法 (適用於NPN)<span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关"> </span></span> </h4>
因手上的是NPN型, PNP的接法請Google一下 :-P <br />
<br />
1,2 兩種的接法比較直接, 棕色接 Zmin+, <span class="short_text" id="result_box" lang="zh-TW"><span class="">藍色</span></span>接 Zmin-, 黑接ZminS,安全的話<span class="short_text" id="result_box" lang="zh-TW"><span class="">藍</span></span>黑線加粒10K電阻做pull-up(有人唔加都冇問題, 不過我未試過, 怕燒板);<br />
<br />
3的接法因有兩種電, 會比煩,但都是簡單的, 電路圖如下(取自Reprap forum), 要在黑線pup-up 電阻(10K)之前, 接上一粒15k電阻做降壓(太約降到3.3~3.8V)<br />
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可以駁電線做 (如<a href="https://www.youtube.com/watch?v=EcGFLwj0pnA" target="_blank">這裡</a>), 又可以好似我咁, 做塊板:<br />
<br />
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12V+和GND可接到RAMPS上的12V-AUX(如下圖A位), 有些RAMPS上會冇12V-AUX插位, 這情況可直駁5A供電位(如下圖B位).<br />
<br />
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<br />
*** Zmin 接到RAMPS上之前, 記住<span class="short_text" id="result_box" lang="zh-TW"><span title="接近开关">測試一下輸出電壓, 要在3.3-5V之間,太低唔work,太高會燒板.</span></span> <br />
<br />
接好線後, 設定Firmware之後就可以用到G29, G30等Z-Probe GCode..<br />
<br />
<a href="http://3dprinterdiy123.blogspot.hk/2015/10/z-probe-inductive-proximity-sensor-part.html" target="_blank">Z-Probe 近接開關距離調整 - inductive proximity sensor (接近開關) Part II</a><br />
<h4>
</h4>
Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com2tag:blogger.com,1999:blog-1699111305518192505.post-32025235300384103012015-06-15T11:07:00.000+08:002015-07-06T12:12:55.085+08:00現役機 - SmartrapCore<a href="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjl1Af8IJlIYB1jZJIUw_0TVRhn3c4rXEMeZjaDScyU3URmu-wDI70u_uIdgVtIuCCaOnmB_nQRB9bN11gsZYRedr1wrvKp-Q_PlrnJIkg5UyjFfSDW_2tGePOU36dqHkEtaJHjf-btEXbm/s1600/20150601_004234.jpg" style="clear: right; float: right; margin-bottom: 1em; margin-left: 1em;"><img border="0" height="320" src="https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEjl1Af8IJlIYB1jZJIUw_0TVRhn3c4rXEMeZjaDScyU3URmu-wDI70u_uIdgVtIuCCaOnmB_nQRB9bN11gsZYRedr1wrvKp-Q_PlrnJIkg5UyjFfSDW_2tGePOU36dqHkEtaJHjf-btEXbm/s320/20150601_004234.jpg" width="180" /></a><br />
SmartrapCore 係由Smartrap設計者設計的CoreXY機種, 結構簡單, 成本也較低. 而過住CoreXY最為人垢病的同步帶要打交叉問題, SmartrapCore利用雙層結構解決.<br />
<br />
https://www.youmagine.com/designs/smartcore <br />
<br />
<br />
一直以來CoreXY的機種都比較少, 原因可能是它的好處不夠明顯. 以速度來說又比不起Delta機種的快速.以質素來說,又和傳統的XYZ機種不分上下.<br />
<br />
<a name='more'></a><br /><br />
簡單來說CoreXY的好處:<br />
- Z軸不用負擔X軸步住馬達的重量.<br />
- 位置計算上比Delta機簡單, Delta機要計算大量的三角函數, 而CoreXY只需要計自加減數<br />
- Tune機容易, 設計上XY軸是同步的, 所以只需量度一軸就可以, Z軸獨立Tune<br />
<br />
CoreXY的壞處???<br />
- XY軸以對拉的方式運作, 框架要淨, 多以方型鋁材或以箱型木板建造(如X3D和SmartrapCore)<br />
<br />
官方Video<br />
<a href="https://youtu.be/wscPvt-nCtw">https://youtu.be/wscPvt-nCtw</a><br />
<br />
我的SmartRapcore<br />
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<iframe allowfullscreen="" class="YOUTUBE-iframe-video" data-thumbnail-src="https://i.ytimg.com/vi/KB31wzKcJpg/0.jpg" frameborder="0" height="266" src="https://www.youtube.com/embed/KB31wzKcJpg?feature=player_embedded" width="320"></iframe><br />
<br />Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0tag:blogger.com,1999:blog-1699111305518192505.post-36527628858032477562015-06-05T11:05:00.000+08:002015-06-29T11:16:32.307+08:00入門知識II上一篇入門篇講3D打印機種類, 本篇講俾Reprap中常見的FDM機種.<br />
<br />
FDM(<span class="short_text" id="result_box" lang="zh-TW"><span title="熔融沉积式">熔融沈積</span></span>)3D打印機是以熱力來融化膠條, 一層一層"畫出來"的, 但怎樣才能做出一部畫出3物件的機器, 那以下說一說:-<br />
<br />
我們可以這樣看, 一部完整的3D打印機可分為軟件和硬件兩部份, 而硬件又可分為<span class="short_text" id="result_box" lang="zh-TW"><span class="">電子電路, </span></span><span class="short_text" id="result_box" lang="zh-TW"><span class="">機械</span></span>和<span class="short_text" id="result_box" lang="zh-TW"><span class="">擠出機</span></span>:-<br />
<br />
1. 軟件方面<br />
<br />
<b><u>CAD軟件</u></b><br />
首
先要有CAD軟件, CAD軟件是用來建立3D模型的, 出名的如Autocad, 3D studio, 又或開放源的OpenSCAD,
FreeCAD, OpenJSCAD.org 等. 以CAD軟件做好的3D模型通常都以 STL的檔案格式儲存.
如果不懂得任何CAD軟件是否等於用不了3D打印機? 這又不是的, 因為網上有些網站(如<a href="http://thingiverse.com/">http://thingiverse.com/</a>)會有現成的模型, 下載打印就可以了. <br />
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<u><b>切片軟件(Slicing Software)</b></u><br />
有了STL file後, 就可以住行<span class="short_text" id="result_box" lang="zh-TW"><span class="">切片</span></span>工序, <span class="short_text" id="result_box" lang="zh-TW"><span class="">切片就是生成</span></span>一層一層的過程. 這過程中會產生一連串的G-Code, G-Code又是甚麼? G-Code簡單講就是對3D打印機發出的指今, 如一般常用的G28 - XYZ歸0.<br />
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常用的<span class="short_text" id="result_box" lang="zh-TW"><span class="">切片軟件有</span></span>Cura,Slic3r 和Kisslicer<br />
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<u><b>主控軟件(Host Software)</b></u><br />
Host Software為控制打印機的主要軟件, 常用的有:-<br />
<ul>
<li>Pronterface</li>
<li>Repetier-Host</li>
<li>ReplicatorG</li>
<li>Cura</li>
</ul>
<div class="gt-baf-cell gt-baf-word-clickable">
<u><b>韌體Firmware </b></u></div>
<div class="gt-baf-cell gt-baf-word-clickable">
韌體是載於3D打印機電路中的軟件, 接收G-Code後從而控制, 馬達, 打印頭等等各部份的動作, 最多人用的為 Marlin 和 Repetier-Firmware</div>
<div class="gt-baf-cell gt-baf-word-clickable">
下一篇講<span class="short_text" id="result_box" lang="zh-TW"><span class="">硬件中的電子電路</span></span></div>
Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0tag:blogger.com,1999:blog-1699111305518192505.post-71384582762297657422015-06-04T11:06:00.000+08:002015-07-06T12:13:04.847+08:00我的木頭機這是我DIY的第一部3D打印機, 主要用現成買到的零件加上木板打做的.<br />
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這部機以Willson TS為籃本, 原來的打印膠件以現成零件加上木板代替.<br />
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現在己拆了, 主要原因係這部木頭機係一部過度機,用來打印另一部機的膠件.<br />
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BOM如下:<br />
<u>取自Willson TS的BOM</u><br />
2020 鋁材<br />
M8 光軸<br />
M8 絲杆 <br />
608ZZ Bearing<br />
LM8UU <span class="short_text" id="result_box" lang="zh-TW"><span title="直线运动轴承">直線運動軸承</span></span><br />
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9mm <br />
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<span class="short_text" id="result_box" lang="zh-TW"><span title="不锈钢管卡
">不銹鋼管卡15mm</span></span><br />
<span class="short_text" id="result_box" lang="zh-TW"><span title="不锈钢管卡
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<span class="short_text" id="result_box" lang="zh-TW"><span title="42步进电机支架">42步進電機支架</span></span><br />
ED3 V6 Hotend<br />
<span class="short_text" id="result_box" lang="zh-TW"><span title="42步进电机支架"><span class="short_text" id="result_box" lang="zh-TW"><span title="弹性联轴器"><span class="short_text" id="result_box" lang="zh-TW"><span title="E3D V6热端固定板">E3D V6</span></span></span></span></span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="42步进电机支架"><span class="short_text" id="result_box" lang="zh-TW"><span title="弹性联轴器"><span class="short_text" id="result_box" lang="zh-TW"><span title="E3D V6热端固定板"> Hotend固定板</span></span> </span></span></span></span> <br />
MK8 <span class="short_text" id="result_box" lang="zh-TW"><span title="远程挤出机">遠程擠出機</span></span><br />
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Y<span class="short_text" id="result_box" lang="zh-TW"><span title="42步进电机支架"><span class="short_text" id="result_box" lang="zh-TW"><span title="弹性联轴器">軸 motor</span></span></span></span><br />
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<span class="short_text" id="result_box" lang="zh-TW"><span title="42步进电机支架"><span class="short_text" id="result_box" lang="zh-TW"><span title="弹性联轴器"><span class="short_text" id="result_box" lang="zh-TW"><span title="E3D V6热端固定板"><br /></span></span></span></span> </span></span>Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com1tag:blogger.com,1999:blog-1699111305518192505.post-19894875470387916162015-04-05T11:04:00.000+08:002015-06-29T11:15:59.038+08:00入門知識用于3D打印的技術和方式有幾種, 大致可分為<br />
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1. 激光 - 如SLS (<span class="short_text" id="result_box" lang="zh-TW"><span title="选择性激光烧结">選擇性激光燒結</span></span>) , DMLS (<span class="short_text" id="result_box" lang="zh-TW"><span title="直接金属激光烧结">直接金屬激光燒結</span></span>), 用激光去切割/<span class="short_text" id="result_box" lang="zh-TW"><span title="直接金属激光烧结">燒</span></span>融來成型<br />
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2. 熔融 - 以熱力來融化膠條, 一層一層"畫出來", 如FDM(<span class="short_text" id="result_box" lang="zh-TW"><span title="熔融沉积式">熔融沈積</span></span>)<br />
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3. 光學 - SLA/DLP以光來令<span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">光硬化樹脂成型</span></span><br />
<span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂"><br /></span></span>
<span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">而DIY</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂"><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">/Opensource</span></span> 的3D打印機則以</span></span>FDM為主, 亦有少量的SLA/DLP<br />
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說到<span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">DIY/Opensource 3D打印機, 就不得不提RepRap 呢個Opensource project.</span></span><br />
<span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂"><br /></span></span>
<a href="http://www.reprap.org/"><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">http://www.reprap.org</span></span></a><br />
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<span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">Reprap 呢個project 的主要目的係設計出些有自我</span></span><span class="" id="result_box" lang="zh-TW"><span class="">複製能力的</span><span class="">機器, 好似好科幻咁, 但係說得簡單一點就是以Reprap概念設計的</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">3D打印機是能夠用其他的3D打</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">印機</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">,</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂"><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">印</span></span>出自己的零件出來, 加上一些電子同現成的金工</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">零件就成為一部新的</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">3D打印機, 而呢部新機又可以加入打</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂"><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">印</span></span>出另一部新機需要的</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">零件.</span></span><br />
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<span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">由於</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">Reprap個scale很大, 所以</span></span><span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂">Reprap本身都引用多個其他的opensorce project來達成的.</span></span><br />
<span class="short_text" id="result_box" lang="zh-TW"><span title="光硬化树脂"><br /></span></span>Vic Huihttp://www.blogger.com/profile/06594095119111446183noreply@blogger.com0