GrabCAD 模型信息
Twist-N-Lock NASA Handrail Clamp · 模型 240092
Update: 2/16/2015 Twist-n-lock V6 support removal and testing http://youtu.be/zCld-aTrJ58 ------------------------------------------------------------------------------------------ UPDATE: 2/15/2015 My 3D printer has been print around the clock for the last week. Five Designs Later I have my final product! Twist-N-Lock V6 is: 1) Easy to print 2) Uses only 38 grams of ABS including support ( $59.28 cost to print on ISS) 3) Self interlocks into one. No loose part floating in space) 4) Reduced assembly to only two parts. 5) Has two mounting locations for the T-Stud 6) Provides an excellent holding force 7) Holding force is adjustable with buttress screw design 8) Easy to Slide on and off the Hand rail Check out my video going through all the designs from prototype to final product. http://youtu.be/FjpqPpqYXrc Here is what I have discovered in my design adventure: 1) Printing thread in the Z direction is not that strong. Delaminate will occur between layers when screwing for is applied. Try printing threads in the XY plane for more strength and turn support on. 2) Avoid Applying moment stress on Screws. Once a crack propagates, it is all over. 3) Stay away from infill. Instead of using infill increase shells to 10 or more. Think of shells as fibers and the more continues fiber you have the stronger the part is. 4) K.I.S.S the design. Reduce the parts to the least amount possible. The more joints there are the more places it can fail. Stay away from small detailed parts. Easy to lose and easier to break. 5) Built in features. Design features into the parts. Leave the manufacturing hand book in the car. If you can think it you can print it. 6) Offset amounts for threads. I used 0.4mm offset for the threads and it turned out perfect. ----------------------------------------------------------------------------------- UPDATE: 2/1/2015 Videos of Twist-N-Lock V4 working http://youtu.be/Zyusg498S9U http://youtu.be/DggLg6JFZEc Jonathan on the forum pointed out my design extended past the 1" perimeter offset rules. With this information I redesigned the assembly with a small thread going from 20mm to 16mm Dia. Happy to report the new design had a better holding strength than V3 and uses 30% less material. The Lever has also been extended from 40mm to 50mm for better mechanical advantage. Side Note: It is possible now to print all the parts on one build tray (X: 50.15mm, Y: 66.95mm, Z: 51.51mm) Print Setting Suggestions: 0.2mm Layer height 90%...
- 格式
- Rendering、STL、STEP / IGES、SOLIDWORKS
- 分类
- 3D printing、Aerospace、Aviation
- 标签
- twist-n-lock、handrailclamp、nasa
- 数据更新
- 2026-09-24T00:24:44Z