| 摘要 |
Reciprocating carriage drawing machine includes first guideways extending in a given drawing direction, a drawing carriage reciprocably mounted in the guideways, revolving cam means operatively connected to the drawing carriage for reciprocating the same along the first guideways, an intermediate carriage interposed between the drawing carriage and the cam means for lengthening the stroke of the drawing carriage, the intermediate carriage being also operatively connected to the cam means and being similarly reciprocable thereby in second guideways in the given drawing direction, and step-up transmission means for increasing the length of stroke of the drawing carriage comprising at least one axle carried by the intermediate carriage and extending substantially perpendicularly to the given drawing direction, a pinion loosely mounted on the axle and being in meshing engagement at one side thereof with a stationary rack and on the other side thereof with a rack slidable in third guideways paralled to the drawing direction, the slidable rack being coupled to the drawing carriage. |
