I need several different sized coil mandrels that will form plastic coil that need to be made on a CNC machine.
A number of the mandrels will use different sized coils. Each will have a place where the coil will lay, spiraling out to the end like a screw. The twist rate will be at a rate of 4:1 for each size, which is the standard of spiral coil.
To get an idea of what the coils should do and a small glimpse of what they look like, please look here:
[login to view URL]
Here are the specifics.
Mandrel standard specs for fitting into the machine:
With a hole drilled and tapped in the middle(Don’t have those specs yet)
Each Mandrel needs to be machined so a wrench can be placed over it to tighten and loosen.
Like the video shown above, the coil should fit into the groves and stick just outside of the ridges that hold it in place, so it can be pressed by round bars. The sizes below are the coil size and mandrel diameter inside. The screws should fall short of the filament size so the filament can be pressed and pushed across the mandrel to form it.
8 & 10mm - .063 in.
10 & 12mm - .070 in.
14 &16mm - .075 in.
18, 20, & 22mm - .083 in.
25, 28, 30, 32, & 35mm - .093 in.
38mm - .103 in.
If you have any questions, feel free to ask. If you don’t feel you can do this, please don’t sign up for the job.
30 фрилансеров(-а) в среднем готовы выполнить эту работу за $474
hello sir I am professional cad /cam designer with first class in engineering .I am capable in 2d drawing , 3d modelling , 3d rendering etc from past decade . please give me an opportunity to work. regards kalp