In order to machine the 6-M12 screw holes at both ends of the bulldozer roller (Fig. 1), we designed a combination of drill and boring tools. This kind of tool can double the work efficiency and make it easy to manufacture and repair. The axial dimension of the drill and the boring can be adjusted at any time. The boring angle tool is designed as a machine tool to index the tool, and the effect is very good.
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Nanjing Great Century Art Model Co., Ltd. , , https://www.dsjysmx.com