Post by traindriver on Nov 13, 2017 19:47:23 GMT -5
What stevem is referring to is the home position of the machine, which indeed, you cannot change. However, the origin of the job is something you can change. You determine that in the software you are using. If you are using Vectric VCarve, there is a button on the left side, second row from the top in the drawing toolbox which says "Set Job Dimensions and Origin" when you hover over it with the mouse. When you click on it, you see this: and the center section says "XY Datum position. This is where you determine which corner will be the origin, or whether the center of the work is the origin. Hope this helps!
I don't get it, what if the Home position isn't right? Mine is off the table right now, every time I press "Home", it sets the machine to go the left bottom corner, and it won't stop there, the machine goes on and start to make noise. Anybody got the same problem? Help..
Post by traindriver on Nov 25, 2017 20:46:28 GMT -5
There are little switches that tell the machine when it has reached the X, Y, and Z limits. When the machine moves to these limit switches, it knows that it is at the home position. It sounds like your X or Y limit switch may not be set correctly. Mine are yellow, and light up with a red light when the limit switch is closed. I assume yours do, too. The X axis switch is on the back of the gantry here If you have a water cooled spindle, then you'll have the black box you see, which covers the water reservoir and cooling unit for the spindle. The yellow thing is the switch. The Y axis switch is under the table. Looking up from below, the Y axis switch looks like this: If you take the cover off the Z axis (or never installed it like someone I know), you can see it here When the axis nears the end of it's physical travel limit, the switch detects a little piece of metal and closes, lighting up when it senses the metal. With the machine turned on, you should be able to take a screwdriver or some such metal object and touch the switch on the side that is in the direction of home and it will light up. If it doesn't light up, either the connection is bad or the switch is bad. If it does light up, then the problem is that either the switch isn't adjusted correctly, or the piece of metal that triggers it isn't adjusted correctly, and the axis is hitting the physical end of it's travel. The noise you hear is the clutch slipping, which keeps you from damaging the motor. Most likely, the switch is just not adjusted right. To adjust it, you can manually move the table (either by jogging, turning the ballscrew by hand, or physically moving the axis) until it is close to the end of it's stroke, then adjust the switch until it comes on. This may cause you to lose a fraction of a millimeter of travel on the other end, but unless you use the whole table, it won't be a problem.
How do I change the origin of the machine to the front right corner instead of the front left corner? I am making an oversized sign and need to continue a path from the right side.
The machine origin doesn't matter. What matters is your workpiece origin which is set within your design file and then when you get to the machine you have to zero the XY axis and set your Z zero with each tool. When tiling you can use individual tiles or the feedthrough for one continuous piece. For ease of design, I create a second post processor file that changes from the first Cartesian quadrant to the second quadrant thus moving the work origin from the near left corner to the near right corner and swaps the X and Y axis. The reason for doing this is most of my feedthrough projects are large signs that are wider than tall and I like to be able to see them in the proper orientation before carving.