| 摘要 |
A broaching machine broaches a multiplicity of generally flat work pieces having a projection at only one side, which are advanced in a single file with the projections extending in the same direction. In order to broach the work pieces in stacked pairs in which the peripheries of the work pieces are continuous, rather than spaced apart by confronting projections, half of the work pieces are inverted and a pair consisting of one inverted work piece and one work piece which has not been inverted are stacked together and presented to a pot broach which broaches the peripheries of both work pieces of the pair in continuous cutting strokes. The finished work pieces are advanced away from the broaching station in stacked condition and are separated into two groups, one of which consists of the bottom work pieces of the pair and the otherconsists of the top work pieces of the pair. This places all work pieces in the same orientation with respect to the lateral projection. The work pieces are then fed alternatively into a single file conveyor.
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