#Offsets in sheetcam plate marker plus
Sheet metal scribe (Chicago cp9361) been done before as a load on YouTube and looks like a nice addon for a finishing touch plus and centre point marking using a thk rail or two circular rails and a double acting pneumatic cylinder two regulators (ar2000) for cylinder up & down (including plate pressure) and a second for the scribe set at 6bar as manuf req Now I have a very fast smooth powerful X and Y axis and fully appreciate the benefits of 2.5d design and sheetcam I was wondering if I could add the following onto my Y-carrige:
It is set at 10 microstep mode (programable stepper), std stepper, 200 steps per revolution, 2mm pitch because it now gives me a metric pitch resolution of 0.001mm per step but that limits my theoretical z travel speed to 20mm / second (20khz - stepper maz step speed before it starts to loose steps) but because the leadscrew is doing theoretically 600 rpm with a Delrin nut it induces a (harmonic?) vibration at a much much lower speed which jerks and vibrates the z (with carp!!!) plastic bearings 28mmOD圆mmIDx~8mm U groove bearing running on a piece of lazer cut steel edge filed (or angle ground) with a partial chamfer so the v on the plate rides inside the plastic U groove of 3 bearings with a lot of play in the bearings inherently. Note I am a perfectionist and I've put a trapezoidal tr10x2 leadscrew (metric acme) as my z and I'm not happy with the travel speed. I've been having a go at several iterations and variants for a better z in inventor (grooved bearings on a v rail, smooth bearings on a shs (50x50), thk rail, circular sliding bearing on circular rail (sc10uu) and circ sliding bearing on supported rail Si thanks v much for the credit for inspiration comment it was very much appreciated and unexpectedĭid not want to taint your build thread with my thoughts and problems which are nothing to do with your good designed table (in case anyone else is reading this fir the first time) mine uses a totally different principle for the zīasically my z sticks and is not smooth when it ascends and descends and the way that it works with the floating head means the switch can stick sometimes
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