Machining DIY Talon Jaws! WW126
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- Опубликовано: 26 дек 2016
- We needed a set of Talon jaws for our Orange Vise - so let's make them! Using a steel soft jaw and Fusion 360, we machine a 0.5" slot and drill the hole pattern with the Tormach PCNC 1100.
Talon jaws are GREAT for holding a working securely by ONLY 0.060"!
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John, just a suggestion. (I don't know on the TorMach machine having never run one.) On most all CNC machines if you program you finish cuts using cutter comp you can control the amount of stock you are leaving or removing by changing the offset for the diameter or radius (some machines use diameter some use radius) in the tool offset page for that tool. For instance in your cam software if you don't offset the tool path to centerline tool path but apply a comp left or right (G41 if traveling on the left side G42 on the right side, you post should automatically put the code in the program). You will need lead in and out moves equal to at least the radius of the intended tool size (I usually add a little more to the radius say .010"). Than you can than just rerun the finish cuts at the machine adjusting the offset to come to size. The way you appear to be doing it you have to go back to the computer to reprocess code every time(what if the tool wears or you change to a new tool). That does work but lets say you have many machines with many operators it could be very difficult to do if one person is programming. Or if you run a job many years later you would have to remember what to do. Or using reground end mills. So it is better to program the actual shape of the part and use the tool offsets to come to size than every one will know how to run each program without needing any additional programing or processing of code. Also looking at a program latter on in the G code it is much easer to tell what size you are cutting.The Haas machine will do this.
When you do your 2d contour to clean up, in the passes tab, change the Compensation type from 'In Computer' to 'In Control'. Also don't leave any stock. Add +.002 to the diameter offset of the tool doing the contour in your CNC control. Run the program, measure the slot, then change the wear offset to what is left to cut and run the program again. You don't have to repost the program and that tool is now dialed in. Then you can also easily adjust this as the tool wears out.
Hey John, when you run a CAM simulation, switch the material from 'mirror' to 'wall paint'. It makes things MUCH easier to see. Thanks for another great video. Ken
Awesome. I was very glad to learn you can hold the alt key to pick a single part of a contour! I will use this daily. Thanks!
This is a perfect situation for a use of cutter compensation. Nice video 👍👍👍
1018 can be case hardened. I made a planer gauge in school and had it case hardened to 55-60 Rockwell. My understanding is that carbon is added to the material from the outside before heat treat.
It is super awesome that your 1100 can generate such precise results after all these years
I've seen a few generic case hardened answers, however, carburization is actually something that's very interesting. You end up heating the low carbon steel while it's wrapped in an air tight 'chamber' and surrounded by charcoal or other high carbon elements. If you heat long enough, you can actually get then almost completely through hardened. It's a very ancient technique that hasn't changed much over time, and essentially very very effective.
1018 CRS can be case hardened by carberizeing. It usually yields a hardened depth of .060 to .065 of an
Aluminum was also used for the cap on the Washington monument, about that same time frame.
I love how the whole machine moves while the table stays very stable 😁
if you use a super quench (water, salt and surfactants) from a little over 1550 degrees you can get it to the 42-45 range. It works by basically breaking up the steam bubble that forms around it to increase contact area of the quench liquid to the part. The 50 range is probably not happening on 1018 unless there is a method I am not aware of.
You can case harden 1018 to those hardness, but the hardened area only goes .010"-.050" deep depending on their process.
If I remember correctly, you are correct. Multiple kings had their highest guests of honor used aluminum silverware rather than gold. Aluminum itself isn't really toxic, but they didn't have any way to process it back then, so it would have other contaminants with it. Currently aluminum is more expensive than steel weight wise, however steel is harder and better for more structural builds. I knew a robotics team that milled out their entire chassis out of aluminum and spent close to $15,000, however their robot was extremely light and almost 30 pounds under the weight limit with more moving parts than most teams. Another team had a chassis out of steel, but they had to "swiss cheese" their robot to fit within the weight limit, but they didn't have as much functionality. The steel chassis cost them almost $600, but very cheap compared to the aluminum version.
Great video John, made my own set of Talon grip jaws today, did not hardened them thou, works great. If you make jaws 1.875" wide, you can make other workholding fixture on other side.
So.. I know this video is old, but I just have to say, AWESOME job using freggin hot keys. I hate all the extra clicks
as others have mentioned, you can case harden 1018. Most likely it was qpq'd (salt bath nitirding). It will usually have a black finish after that process.
Dude! You need to wring your gauge blocks together. ...and, the gauge block carnage as they fly off onto the VM table and rattle around! The horror! Oh! ...the horror!!!
58c is obtainable through carborizing. We induction harden 1018 to mid 50's and can achieve deep effective case hardness. The majority of the parts we hear treat are 1020 or 4140 though.
my old boss invented the talon jaws. I miss machining. love your videos