7. Computer Controlled Machining

Reflection

Group Assignment

Individual Assignment

Checklist for this week:

• ☑ Linked to the group assignment page
• ☑ Documented how you designed your object (something big)
• ☑ Documented how you made your CAM-toolpath
• ☑ Documented how you mae something BIG (setting up the machine, using fixings, testing joints, adjusting feeds and speeds, depth of cut etc)
• ☑ Included your design files and 'hero shot' of your final product :
  Heres all the design files: Fusion File, updated 21st Jun 2024 DXF Consolidated Zip Toolpath

I1. Detailed Steps and Parameters for CNC with Versatil 2500 Using VCarve Pro and NC Easy

Step	Parameters and Ranges	Consequences of Deviation
1. Designing BIG in F360.	I used F360 to design a bench for my children to sit on	Using parametric design and paying attention to stability is vital for it to be revised fast and work correctly. I redo several times because it wasn't stable.
2. DogBone addin	I went to github to download dogbone addin for F360. Thank you @tapnair for the awesome code! I used the code to make dog bones at respective locations with step shown in picture.	Did it without dog bone and it couldn't fit. When parts need to fit together tightly, the dog bones help by making the corners a little bigger so everything slots together smoothly. In 2022, I did the dog bones using Vcarve Pro.
2. Import into VCarvePro	I imported the dxf files into VCarvePro and arrange them neatly for cutting using the transform tool. One have to input the Job Size, I measured the thickness is less than 19mm.	The transformation tool must be clicked else, selecting and dragging using mouse will not work. I also selected the use offset (0,0)
2. Putting DogBones	VCarvePro can also add dogbones under fillet, but for it to work properly, will be good practise to ensure cnc is closed.	I can choose to add dog bone in f360 or vcarvepro.
3. Settings in VCarvePro	Under Toolpath commands, click on Profile Toolpath and then alter the settings shown in the picture. As my design have inner and outer mill. I adjusted them as shown in picture. I ensured that I added 5mm to cutting depth for allowance of bending. and also added tabs. Using the Add Tab command, I added 4 Tabs on each object so that It could be milled out safely. I entered the Tool End settings as shown in the picture. When Done, I pressed the calcualte command. A warning screen pops up to warn that If I do not have sacrifical plate, the bed will be protected. I clicked ok. I watched the simulation and save the toolpath.	Not adding Tabs may results in pieces getting loose and flying off when machined. The program itself will locate 4 tabs by default but one can remove and add in for ease of project.
4. NC-Easy Pro & Machining	First, I set the spindle position origin for x and y (I checked for parrralex error by checking x and y plane) and the material thickness via probe calibration. When using the Machine, I ensured to wear PPE to protect ears, turn on chip wood vacuum before and during milling, and I always have the controller in hand in case of emergency. I used the sanding tool to smoothen my sides and then I assemble the bench as shown in picture.	Heres all the design files: DXF Consolidated Zip Toolpath Fusion File, updated 21st Jun 2024