| 摘要 |
A touch probe has a sensing module (10) and a stylus module (12) magnetically retained and kinematically located thereon. A stylus holder (102) is biased into a kinematic rest location within the stylus module (12). The sensing module (10) has a fixed structure provided by connector (14), cylindrical housing (16), and circuit supporting structure (18). An intermediate load member (30) is connected to structure (18) at one end by means of a relatively resilient diaphragm (40) and at the other by three supporting struts (50), extending at an angle of 45 DEG to the axis A. The load member (30) carries a circular retaining plate (22) upon which the stylus module (12) is located. During a measurement operation a force applied to stylus tip (112) will cause bending of struts (50), and deformation of diaphragm (40) prior to movement of the stylus holder (102) out of its kinematic rest position. Strain gauges provided on the struts (50) detect this bending, and generate an output signal accordingly.
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