Mikrotechnic manufactures spindle dynamic analyser. It can analyse feature, location, roundness and surface finish of spindle. One must measure spindles under actual operating conditions. Only measurements of rotating spindle are meaningful to part quality. Test for optimum spindle speed. Determine, warm-up time for repeatable results. Thermal growth is the largest sin error source in machine tool. As the machine heats up, it grows and bends a lot. That changes the tool position and tilt feature location, and hole depth. Uneven heating creates distortion of the machine structure, causing the spindle to tilt. This changes hole location, flatness and surface finish. When one measures the machine`s temperature characteristics he knows how long to let it stabilize before cutting parts. Synchronous error motion is the" out of roundness` of spindle rotation. It predicts ability to cut round hole. Asynchronous error motion is the non-repeating change in position of spindle on successive rotation. It is directly responsible for surface finish. It is also a great post crash test to guarantee performance. A probe is mounted from the bottom to measure movement in the z-axis. A pair of probes is mounted at right angles [top view] to measure movement in the x and y-axes. A second pair of x and y probes are mounted to measure a second master ball. The combination of these probe pairs generates tilt measurements. Proprietary software collects readings from the probes while the spindle is turning, analyses the results, and reports on them screen with polar and linear plots and discreet measurement values.
