The Shop > CNC

camshaft machining

<< < (3/3)

Gadabout:
Wow, thanks guys for all the input! Its all much appreciated!!
Djc thanks for the drawings, unfortunately I have no idea what they mean!! maths and I parted ways some 45 years ago when I left school!! Suppose I could go to the cad drawing and just take measurements every couple of degrees for the a and z positions its just that I was thinking there must be a better solution where the gcode would be automatically generated.
thanks
Mark

Gadabout:
What about this ? http://gcam.lucasemail.org/  could it be adapted? 
cheers
Mark

djc:

--- Quote from: Gadabout on August 11, 2019, 11:01:11 PM ---What about this ? http://gcam.lucasemail.org/  could it be adapted?
--- End quote ---

Yes, so long as your spindle axis is parallel to your rotary axis. The challenge with this method, especially for a multi-lobed cam is setting up the tooling. The cutting edge needs to relatively large diameter and approximately the width of the cam lobe. The shank or arbor of the cutting tool needs to be narrow enough to clear the high point of the other cam lobes. As well as the setup in the gcam pictures (where the spindle is parallel to X-), it would work on a horizontal mill with the rotary axis parallel to the Y-axis. You might even be able to set up the rotary axis parallel to Z- but your mill will need a lot of headroom between spindle and table.

However, you specified in your initial post that you want the spindle vertical and the rotary axis parallel to X. If this is the case, then it won't work.

Doc:
I did a V8 cam in 2 setups surface milling with a small ball endmill.

Navigation

[0] Message Index

[*] Previous page