BROACHING ON A ROBODRILL?!?! 

Imagine that a guy who is willing to share his job shop journey for the internet to enjoy , aspirational! 👍🏽

Devon Dupuis is such an inspiration to me.

I use broaching inside fusion on a haas umc750. I also use trace and draw in a small arc at the bottom for my back off.

Awesome stuff Shawn! Keep up the great work!

Great video showing your process, Shawn.

I’m single point broaching in our robodrill but it’s all hand written. Would love to see more on the fusion post!

Your video is great and well edited. Thanks. For me, the missing part was the CAM cycle you used. You mentioned Fusion and CAMplete, but I don’t know what cycle you used. I’d love to know. Really awesome process.

clough42 did some broaching and macros

You da man Shawn!

Very cool to see this! I am doing something similar to this on a Haas UMC750SS, but I do square through holes (usualy 40mm square, 100mm deep). I do it in plastics though (mostly UHMW but sometimes also in delrin) My solution was a hand written macro, but my needs are a little more simple as the square holes are for mounting a pulley on a square shaft, so its always on X Y 0. This solution is much nicer though!

All the rotary broach guys are not *exactly* wrong, but I think getting single point dialed-in for your shop is probably the more flexible option. Rotary broaching requires specialized tooling you would need to have for any job that comes across the bench - and all the delays and BS that bringing in tooling for a job entails. Being able to single point on-demand? Worth it. Having said that, Polygon has a rotary broach brake that lets you time the broach. You essentially engage the bottom face of the broach with the material, then turn the spindle on, do the broach, and retract to a point where the tool is still engaged. Turn the spindle off and the brake keeps it from losing position through the rest of the cycle. Wash, rinse, repeat. On a BT30, you will definitely want to get in with a small tool and pre-form as much of the broach feature as you can - not just plunge the broach into the book spec pre-drilled hole. This lowers the cutting pressure dramatically; you really just want to be biting out the minimal practical material in those corners. Remember- BT30 machines are happy with relatively high Z forces from all the drilling they do. I can't speak to the Fanuc 24k spindle (which is a bit higher strung than our Brother spindles), but I can't imagine a properly run rotary broach in 6061 would be a problem. We do this all day with 16k spindles in Speedios.

Awesome post editing but i think you would save loads of time by using a rotary broach. Single point is good for prototyping because you don't need specific tools, but if you're doing production, rotary broach all the way. Each hole would be like 5 seconds

Thank you for the video, very cool. It was a little confusing, showing us the tool close up before jumping into the CAM might have helped!

Edge precision has the best broaching video on youtube, but he's doing it in a macro. Haas have VPS templates for broaching, and some good videos on them.

I have never seen an angle oriented m19, going to have to try that. I have 2 robodrills as well, but im curious how many other platforms will take it. I have a c- axis single point macro from a lathe, all you told it was how many sides, start diameter, end diameter, depth and feed. Worked great, but we went to wobble broach for the speed.

Rotary broach has entered the chat…

As I’m new to CNC machining, can someone explain why you would choose to broach instead of using a small endmill? I understand there’s more of a radius in the corner, but the nut also has a radius. Or is it more of a tool length issue? So much to learn….

Nice video! Have you checked the load support on the table when pushing? It is certainly possible, but with B swiveled 90 degrees it is not optimal in the long run.

horn tooling might have a broaching setup that may fit your requirement and then youd have inserts

Horn make nice single point hex broaches. Loads more reliable than a wobble broach. Used them on Swiss for years with a little macro I got off the internet Write one line of code once in position and it will do what you need. 30 seconds work

not worried about wearing your small taper precision spindle bearings by loading with zero RPM and lube?

You are telling us about the post property box but you don't show us

It looks to me like design for manufacturing has not found it's way yet. A lot of complicated procedures for simple feature. Can't you just press in nuts, or use serated inserts/cling nuts. Or could potentially just use normal nuts some simpler punch feature to deform once nut is in.

Since this feature is for a nut, I would mill this hex and make my own nut to fit in there (or modify an existing one) . Way faster and cheaper. This just shows incompetence of design / construction.

How did you index the tool? Was it as simple as index it in the holder, square to the drive lugs. M19 a normal m code for robodrills.? My post is the one that Nyccnc made + I modded it so it to G53 x y at the end of program. Now I need it to shut spindle off during Z G53 at end of program. Right now it'll be spinning up by the tool change relying on M30 to shut down