| 摘要 |
MULTI-AXIS LOAD CELL A multi-axis load cell of the type adapted to generate signals corresponding to each of the various force and moment components exerted on the load cell is disclosed, comprised of a hub and a housing interconnected by three flexure arms, each flexure arm fixed at one end to one of the hub or housing and at the other end to a beam flexure element fixed to the other of the hub or housing. Each flexure beam is designed to be readily deflected in directions aligned with its respective flexure arm but offers substantially greater resistance to deflection in other directions, so that a centering bias force is provided without restricting the bending deflection of the flexure arms relied on to measure the force and moment components. Two sets of displacement transducers are provided, each set consisting of three transducers, with the first set arranged in pinwheel fashion about the load cell axis to measure the XY displacement components and torsional about the load cell axis. The second set consists of the other three displacement transducers arranged about the load cell axis and extending in a direction parallel thereto and adapted to measure relative movement between the hub and housing corresponding to the applied forces parallel to the load cell axis and bending moments about the X and Y axes. All of these transducers are disposed with their engagement tip in a common plane to minimize cross-influencing created by combined loadings. |
