此页面是使用RepRap 3-D 打印使OSAT实现可持续发展的国际项目的一部分了解更多

研究: OSAT 的开源 3-D 打印RecycleBot家庭回收的 LCA绿色分布式回收Ethical Filament分布式制造的LCA • RepRap LCA 能源和二氧化碳2太阳能 RepRaps太阳能回收机器人可行性中心机械测试RepRap 打印协议: MOST经验教训MOST RepRap BuildMOST Prusa BuildMOST HS RepRap buildRepRap 打印服务器

让我: 想要建立一个 MOST RepRap?- 从这里开始!Delta Build 概述:MOSTAthena Build 概述MOST 金属 3-D 打印机Humanitarian Crisis Response 3-D 打印机




图 1. CNC Router Parts 金属 3D 打印机。
图 2. 安装在 CNC 路由器零件上的焊枪。
图 3.Mach3 界面。
如何将 CNC Router Parts 机器变成金属 3D 打印机。

简介

CNC Router Parts已经具备由控制单元引导的 3D 运动能力(参见图 1)。为了添加金属 3D 打印功能,需要安装焊枪或线轴枪来代替铣刀。焊枪充当打印头,将细丝沉积在基板上,该焊丝是安装在 CNC 路由器零件底座上的基板。控制单元还需要能够发送输出信号来控制焊机。

从 3D 模型中,金属 3D 打印的切片机开源软件MOST_Metal_Cura可用于将模型切成层并生成数控编程语言G-Code文件,该文件是在每一层中的运动规划为了用灯丝填充所有层。

在通过以太网电缆连接到控制单元的计算机上,一个名为Mach3的客户端软件接受 G-Code 文件,然后逐行解释这些 G-Code 并与控制单元通信以调节 3D 运动。

随着运动的发生,金属丝逐珠逐层焊接,直到完成模型。

Safety

  • Safety equipment is based off of standard MIG welding safety protocols [1]

Work Area

  • Use your metal 3D printer on a flat surface isolated from water and flammable materials.
  • Verify that you have proper grounding with a metal on metal connection to your substrate.
  • Ensure your gas cylinder is secured to an upright support or cart at all times and only use gas hoses designed for welding.
  • Eliminate clutter from the work area as you will be raining sparks everywhere. Minimize the number of cables underfoot to avoid tripping.
  • Examine hoses regularly for leaks, wear and loose connections and replace faulty lines. Spray with a soap and water mixture. Bubbles will show leaks.
  • Ensure proper ventilation of work area. Welding fumes are hazardous. In a home garage leave a door or window open and run a box fan as an exhaust to remove fumes from your breathing area. We have also used masks.

Safety gear

  • Wear safety glasses at all times while in the lab.
  • When printing and/looking at the printer while printing wear a welders mask/welding helmet (auto-darkening or flip-shade with current ANSI certification) or look at it using a webcam. Do not watch the printer with unprotected eyes!
  • Use pliers to pick up the substrate after printing or thick leather gloves
  • Always wear flame-resistant lab coat and heavy duty leather gloves when handling the printed parts
  • Wear leather shoes - high-tops (steel-toes are a bonus).

Metal 3D printing exposes you to welding for longer periods of time than is normal for routine welding. You should ensure that all of your skin is covered by something to avoid "sun burns".

Equipment

  1. CNC Router Parts with control unit
  2. A client computer with Mach3 with Ethernet cable connect to the control unit
  3. A MIG welder and a modified weld gun to accept turning on and off signal
  4. A custom parts to hold a weld gun (See Figure 2)
  5. A wire to connect output from the control unit to the weld gun.
  6. A cylinder of shield gas, the type of gas depend on the type of metal (e.g., RC25 for steel)
  7. A welding curtain
  8. A ventilation fan

Operation & Procedure

  1. Turn on the control unit before open Mach3 program.
  2. Open Mach3 and click Reset button (See Figure 3).
  3. Click Load G-Code button and select G-Code file (The file has to be .txt).
  4. Set the original (0,0,0) point by moving the mounted weld gun to the wanted position, the nozzle should be 8 mm height from the substrate and in the middle of the substrate (Depends on the 3D model.), then click Zero X, Zero Y, and Zero Z buttons.
  5. Dry run with the welder and the shield gas off. Make sure the welding will be inside the substrate. Otherwise, adjust the position to be so.
  6. Stop the dry run, click Stop button, and reset the position of the weld gun by clicking GOTO ZERO button.
  7. Turn on the welder and the shield gas (For steel, set shield gas to 25 Cubic Feet per Hour, CFH).
  8. Close the welding curtain for protection. Turn on the ventilation fan.
  9. Click Cycle Start button to start printing.
  10. Usually, there is a pause between layer generated by MOSTMetalCura. The bigger the part is the longer the pause should be in order to let it cool down (70 degree Fahrenheit). The pause time can be set in MOSTMetalCura. User can manually stop the printing by click Stop button and click Cycle Start button to resume (Be careful! It will stop whatever it is doing and then skip to the next line of G-Code). Clean the nozzle if it is clogged up.
  11. Continue printing until finish all layers.

See also

在新闻

页面数据
作者元永(阿克)尼尔西姆
发表2017
执照CC-BY-SA-4.0
影响Number of views to this page and its redirects. Updated once a month. Views by admins and bots are not counted. Multiple views during the same session are counted as one.603
Cookies help us deliver our services. By using our services, you agree to our use of cookies.