Large-diameter countersink reverse reaming tool for numerical control machining
A large-diameter, countersunk hole technology, used in metal processing equipment, manufacturing tools, drilling/drilling equipment, etc., can solve the problems of difficult to achieve bolt through-hole ends, inconvenient turning, bulky, etc., to reduce the phenomenon of knife vibration , to ensure the quality of processing, the effect of broad application prospects
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[0026] As shown in the figure, a large-diameter countersinking tool for countersinking in this patent application is characterized in that it includes a tool holder 3, a tool body, a key and a stopper.
[0027] The lower part of the tool bar 3 is provided with a first keyway 4 , and the lower part of the first keyway 4 is provided with a stopper mounting part 5 .
[0028] The cutter body includes a body and three blades.
[0029] The middle part of the body is provided with a mounting hole, and the inner side of the mounting hole is provided with a through second keyway 6; the outer side of the body is provided with three blade installation parts; the outer surfaces of the three blade installation parts are all arc-shaped , coincides with the inner diameter of the counterbore 2 to be processed; the three blade installation parts are respectively the first blade installation part 7 , the second blade installation part 8 and the third blade installation part 9 .
[0030] The th...
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