本实用新型是由中心轴杆、转动滑块和划针组成。
The utility model is composed of a central shaft road, a turning block, and a scribing needle.
根据铸件形状特点，若在动模内取出铸件，需长距离抽芯，故设计了滑块中途自行转动机构。
If the casting is taken out from the moving die, long distance core pulling is needed according to the shape of the casting, so the mechanism of the sliding block which rotates midway was designed.
磨盖板机中的盖板传动装置由一个曲柄滑块机构和两个转动导杆机构等组合而成。
The device for driving flat in the flat grinding machine is composed essentially of a slider-crank mechanism and two rotating guide mechanisms.
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