Category Archives: Side Projects

Z-axis tool setter for cnc mill

tool setterAt milling work, mainly 3D, it is required that the machine operator possesses information about the length of the tool in the whole course of processing, however, mainly at the tool replacement. When inserting the first tool in the spindle there will be two measurements done: metering the zero position of the work-piece (surface) and also the tool length (tool overhang). At the replacement or with any other tool inserted only the measurement using the tool length sensor will be done and the controlling program will adjust the height of the Z-axis from the measurement as if it was an equally long tool. For comparison measurement use the sensor attached to the machine’s table; the position must be preserved during the whole processing cycle. There are many ready-made solutions and producers of such sensors; however, I can show you how to make such sensor easily at home. The result is not only accurate (±0.02mm), but it is also produced for much less than the ready-made industrial solution.
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