capacitive displacement sensors, eddy-curent sensors capacitive sensors, eddy-current sensors, displacement sensors

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Spindle Error Analyzer: Tests Performed-
Thermal Stability

spindle thermal stability

sea 8 enhancement
Editable labels on temperature curves (i.e. Ambient, frame etc.)
Open and shorted temperature probe alert
Manual scale adjustment

Changes from Machine Generated Heat

Stability tests measure the effects of heat produced by the spindle itself during operation. These tests are performed while the spindle is rotating. Because they are designed to test for self-generated heat they are of a relatively short duration. Sixty minutes is typical. Results are charted with temperature data when available. No measurement is made of rotational error motions, only the average movement of the center of the target is charted.

These tests measure the ability of the machine to maintain the relative position between the tool and workpiece and evaluate the following aspects of machine tool performance:

  • Locate features on a part at any distance from the spindle face
  • Location of a hole
  • Depth of a hole
  • Location of a contour
  • Isolate problems of simple X and Y motion from more complex angular motions

3 Probe Stability

Three probe stability tests simply chart the movement of the target in the X, Y, and Z axes.

5 Probe Stability (Tilt)

Five probe thermal stability is essentially the same as the three probe stability test but there is an additional probe in the X and Y axes. Using the data from these additional probes the change in the tilt of the spindle can be charted as a function of time and temperature. This is important in applications where machining takes place at various distances from the spindle face. By measuring the tilt angle of the spindle, it is possible to calculate the tool position at any axial distance from the spindle face.

 

 

 

 

SEA 8 Manual
pdf (500K)

SEA Literature
pdf (95K)

Master Ball Targets Dimensions and Care
web page pdf (62k)

Using Capacitance Probes to Measure the Limit of Machine Contouring Performance
pdf (650k)

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