![]() Some of you may know that my lathe was not cutting at the correct speed and that I installed a variable frequency drive so I could adjust the synchronous motor RPM. So I revamped my scheme and I built a mechanism to counter balance the head with a pulley arrangement and a weight attached to a shuttle that rides on a vertical track behind the overhead. But the spring needs to connect to the Z carriage or the spring tension changes when the head is moved up or down. One of my other problems was since the head weighs so much more than my 1D I had to add a spring. For each measurement I took the difference between the peak reading for the driven channel and the non driven channel. I'm pretty happy with that.įor that check, I cut white noise right only, then left only. I checked the channel separation (cross talk) at it looks like it's at around 15dB. It turns out the frequency response changes with cutting force, and how much signal you drive with as well. I have discovered there are many variables involved in this project for sure. I'll go into this more and post pictures. I also added a segment of carbon fiber on each push rod in the center. I've also glued some on the inside of the plastic body in several locations. Those pieces and not glued in, so I could get them out depending on how it went. I've added some Sorbothane in several key locations, including behind the V spring, around the piano wire connection to the body, and at all 4 spring points on both drivers. I'll be posing a new test cut / video and then start discussing the parts and how I made them. I've made a few changes to the head and had better response as shown below. It solves many of the the difficulties hooking everything together.īravo, and thanks so much for sharing that awesome video!!!! It's pretty cool that you have used Todds idea incorporating the the push rod into the driver and the same connection method to the torque tube. I have given some thought to changing the mounting orientation of the drivers and cutting two of the spring connections to encourage the driver to move in the correct direction with less effort but your solution is a far better one. I am really impressed with your mods to the driver! I asked Bennett if he had access to an EDM machine at his school thinking he might be able to make new less springy springs but your solution is just too good. ![]() With the proper tools like a scope, it's no big deal but for a first year student (or a newbee like me with a cutter) it's a steep learning curve to climb. It's kind of like a non electronics guy trying to imagine a microsecond. ![]() Just print new springs in ABS to test the results, and seem much more exciting.Ĭiuens, your video is a must view for anyone who is having a hard time visualizing how this 45/45 system works! I know Todd has a good handle on this but I had a really hard time getting my head (pardon the pun) around this because the movements involved seem so small.
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