Maschine zum automatischen Zusammenbau von Speichenraedern

摘要

An automatic spoked wheel building machine including a wheel rim and hub support structure arranged to clamp the rim and retain a spoked hub in position centrally of the rim whilst spokes are inserted in series in a succession of groups into receiving holes in the rim, the wheel rim and hub being indexed to bring a hole in the wheel rim into alignment with a nipple retaining head supplied with nipples successively. There being adjacent the nipple retaining head a motor-driven screwdriver bit adapted to be advanced and retracted towards and away from the rim to collect a nipple during advancement, locate it on the end of the spoke and screw it onto the spoke to a predetermined condition of tensioning of the spoke and then to retract whilst a successive spoke hole in the rim containing a spoke is brought to the nipple-receiving head to receive a nipple upon the next successive advancing movement of the screwdriver bit.