一滚轮支架由一pcb支撑以得到更高的稳定性。
A scrolling wheel carriage is supported by a PCB for greater stability.
曲轴两端面中心孔的定位方法是，将 曲轴放到该定位划线台滚轮支架的滚轮上，使划针在曲轴两端面上画 圆。
The bent shaft is mounted on the roller for positioning the roller brackets of the laying-out table and scriber pictures circle on the two ends of the bent shaft.
机械部分：本文主要详细介绍了机械手及行走机构、珩架拖动小车、珩架、卷扬机、上支架、下支架、滚轮等的设计。
Parts of the mechanical structure: this chapter introduced the design of manipulator and bogie phoning trailer honing rack, windlass, upper support frame, low support frame and roller etc in detail.
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