Make a few quick change knife holders, I think I found a better way!

[a smile]

Then, I tested each link in turn, and finally it was the conductive block that led to the interruption of high-frequency power supply, and indirectly led to the inaccurate signal of the detection voltage feedback to the system, so it could not be cut normally.
I decided to make a conducting electrode structure myself.


I decided to make a conducting electrode structure myself.
I happen to have some broken alloy drill bits, and only the shank part is intact. I cut it into short cylinders, and then I disassembled a fuse holder and took a conductive reed to use. In order to reduce the volume, I cut and solder the new reed.

The lathe turns the insulating rod into a supporting base, the file changes the round hole into a square hole, the reed is placed in and filled with sealant (preferably using insulating glue), and then waits for it to set and clean up.





The next day, the working arm of the machine is drilled, wired, installed, and then the alloy column is installed, and the test begins!


The spark becomes stable and the feed begins to advance steadily.
Test cutting 10 hours, make a knife slot, smooth and smooth, accurate size. The current state should be qualified,

The current state should be qualified, I hope it can be stable for a long time, because there are too many problems, so I am always full of worry.

 

[talvare]

Looks like you're making good progress. Those parts look nice. That's an amazing process.

Ted

 

[a smile]

I finished making 10 knife holders today. If I summarize my knife holders, it should be enough. I don't need to make knife holders for myself anymore.

Maybe making some to sell would be a good business!








How big should the bottom hole of the M12*1.75 screw hole be drilled in the steel? I used 10.2mm early, the use of tap felt very laborious, today to make 10.5mm bottom hole, and feel a bit loose screw fit. Who can give me better advice?

 

[extropic]

Nice work all around. It looks like you have a pretty nice collection of QCTP tool holders now. Wire EDM is a wonderful capability to have available in your shop. Congratulations for getting it working adequately.

It seems that 10.2mm is the common recommended tap drill size, but if I thought it was too small (too difficult to tap), I wouldn't hesitate to use 10.25mm or 10.3mm tap drill instead.

 

[DavidR8]

Wow, those look fantastic!