| 摘要 |
In a tire uniformity machine in which a tire is mounted between upper and lower spindles via upper and lower rims, a rim holding apparatus 10 is composed of a parallel spindle 1 which is in parallel with the axis of tire uniformity machine, a taper collet 2 formed with an inner hole engaging concentrically with the parallel spindle 1 at the center portion thereof and a taper surface at the outer peripheral portion thereof, a rim formed with a taper surface engaging with the taper surface of the taper collet 2 at the inner peripheral portion thereof, a rim clamping device 4 which holds the rim 3 and is mounted so that the parallel spindle 1 is capable of being moved in the axial direction, and a fixing device 5 for determining the axial position of the rim clamping device 4. Thereby, there is provided a highly accurate tire uniformity machine in which (1) the change of rim width and the fitting/removal of rim can be performed easily, and (2) the runout of rim can be decreased to 0.025 mm (standard) or less.
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