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Topics - sndpntlynch

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General Mach Discussion / problem with steps per inch
« on: December 01, 2012, 04:04:04 PM »
I am having problems with setting steps per inch. When I am in the settings/steps per inch program. I select the x axis and tell my machine to move -.75. it moves, then asks how far did it accualy move. I input what my dial indicator says and try again to see if it is moving the right distance. it alway has a different number no matter how many times  I repeat the process. I finaly noticed when I hold down my tab key on keyboard and move the axis, which I have set for .01, I have to click on the axix button 4 to 5 times before it accualy moves the .01 then every click it moves .01. When it starts to move the .01 it moves relatively .01 every time i click on the axis button. The problem I seem to be having is when I move the axis in the other direction it takes 4 to 5 click to get it moving .01 again, reverse direction and it takes 4 to 5 clicks to get it moving .01 again. this happens every time i change direction. does anyone know if this is a program setting in Mach or am I have mechanical problems. I have the X and the A axis slaved together since I am using two motors for the X axis. I have the A motor moving in the reverse direction to move with the X motor which works fine. Any help would be much apreciated. Thank you all for this form.

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I am trying to fine tune my  router and am having problems with squares and circles. I have run through the sequence of step per inch mode. I tell the program to move 20 inches and then tell it how far it accualy moved. In all three axises I am in tolorence of .0001. When I try to machine a circle and square I am geting ovals and rectangles. In a program that created a g code to run a 9 inch square I am getting a 9 inch run in the y axis but only around 4 inches in the x axis. the same thing is happening when I run a circle. can anyone tell me what I am doing wrong.

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General Mach Discussion / parralell usb adapter
« on: November 19, 2011, 11:27:46 PM »
I have just purchased a new computer. There is no 25 pin printer port on new computers. I have found a 25 pin parrallel to usb adapter. will this work for pluging in to my geco drives.

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General Mach Discussion / homming slave axis
« on: November 08, 2011, 11:26:49 PM »
I have slaved my y and a axis together to run two motors on my  y axis. I have just installed my homing switches. Z and X axis work fine. When the homing sequence for the Y axis starts it only move one of my motors not both at the same time. It works fine when cutting but only when trying to reference all home. Is there a setting that will move both motors at the same time when referencing all home?

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