end cam [机] 端凸轮
- Turn the vertical driving cam to the position where throat plate surface3 and needle tip4 align with each other, and the first or the second tooth of the top end of feed dog5 descends from the thro
让针尖4与针板上面3对齐,在送布牙5的前端1~2齿从针板上面下沉的位置,转动上下传送凸轮,进行固定。
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