| 摘要 |
An apparatus is disclosed for re-claiming used or damaged tube turns and rendering them equivalent to new tube turns with correctly oriented openings. A salvaged tube turn is temporarily fixed to a platform in a position such that the longitudinal axis of one of tube turn ends is approximately perpendicular to the plane of an adjacent circular track. The platform is moved so that the opening of the tube turn end is near the circular track. The circular track is then accurately centered with respect to the opening by use of a spider or the like which is temporarily fixed to the center of the track. Either the spider (and track) or the tube turn is moved so that the spider engages the interior of the opening. After the tube turn and the circular track have been aligned correctly with respect to both vertical and horizontal axes, the tube turn and track are moved away from each other in a controlled manner along an axis which is perpendicular to the track-in order to provide clearance space for removal of the spider. The tube turn and circular track are subsequently brought back together along the same cotrolled axis, until they have re-assumed the correct relationship they had earlier. Moving a cutting torch or grinder around the circular track will remove metal from the old opening and will produce a fresh opening which has a known spatial relationship with repsct to the tube turn. If necessary, the other end of the tube turn may be similarly cut and/or ground.
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