I originally posted this in CNC since on a CNC/manual machine but got no response so hopefully someone can help me in this forum
I have glass DRO scales on a shoptask machine (which i have spend an enormous amount of time on trying to get it running properly but thats another story). The scales on Z (carriage) read high in one direction (about 0007 per 6"). The steppers are moving properly and move exactly 6". The DRO scales seem to be parallel to the surface in both planes - the reader could be a little off from the sales due to the fact the scales are not level in the vertical plane (mounted like that from factory) but I have done my best to shim the reader head to be parallel to the scale. When I move the reader around nothing changes.
Are the scales just low quality and not accurate or should I try something else? I dont seem to understand why if its reading high in one direction wont it read high in the opposite. the movement is the same over the same stretch.
Thanks in advance for any help forthcoming
I have glass DRO scales on a shoptask machine (which i have spend an enormous amount of time on trying to get it running properly but thats another story). The scales on Z (carriage) read high in one direction (about 0007 per 6"). The steppers are moving properly and move exactly 6". The DRO scales seem to be parallel to the surface in both planes - the reader could be a little off from the sales due to the fact the scales are not level in the vertical plane (mounted like that from factory) but I have done my best to shim the reader head to be parallel to the scale. When I move the reader around nothing changes.
Are the scales just low quality and not accurate or should I try something else? I dont seem to understand why if its reading high in one direction wont it read high in the opposite. the movement is the same over the same stretch.
Thanks in advance for any help forthcoming