Just for fun. This was a customer spec’d 5/8-24 thread. Followed it up with a dry run for a video.
Gunsmithing CNC Muzzle Threading
- Thread starter Rubicon Precision
- Start date
Always enjoy your CNC videos. Especially now that I'm starting to get into CNC and have a better understanding of what's going on. May I ask.. It looked like a grooving/parting tool, tool came in right after the treading cycle... what it was doing? Also, why so many roughing passes to get to the desired OD? Tool wear prevention?
Glad you liked it. Never know what’s going to come on in the Rubicon shop radio...
The tool after the threads is creating a blunt start/Higbee thread.
The number of roughing passes is a result of safe compromise. I found that no matter how well you are holding the tapered barrel, you can push it back into the chuck with a tool nose radius and depth of cut normally used to rough round stock. There may also be a few air passes because my program is written for nearly every muzzle diameter, rather than specific for the actual barrel.
Very cool. I thought of a Higbee thread after I posted it but was sort of confused on how that word work. After looking at that tool in action again, it makes perfect sense! Thank you for the reply.
Are you using a macro type program or do you have different programs for different tennons/muzzles? I'm trying to figure out which route would be suited for us at the moment. I'm thinking macros but need to find someone to write them.
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