Hole opener adjustable in hole diameter
A hole opener and hole diameter technology, which is used in drilling/drilling equipment, components of boring machines/drilling machines, and manufacturing tools, etc., can solve the problems of inconvenient processing and unsatisfactory processing quality, and save carrying space and materials. Effect
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[0023] Embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
[0024] A hole opener with adjustable aperture of the present invention, which includes a tool holder 1 and several drilling cutter bodies 2, the middle part of the tool holder 1 is axially provided with a through hole 11 for fixing with a drill bit, and the upper surface of the tool holder 1 There are several knife grooves 12, the inner end of the knife groove 12 extends to the through hole 11, the outer end extends to the side of the tool holder 1, the inner side of the knife groove 12 is provided with a vertical locking structure 13 of the knife groove, and the tool holder 1 is coaxially arranged An annular adjusting disc 3 is arranged, and the annular adjusting disc 3 can rotate in the knife rest 1. The upper surface of the annular adjusting disc 3 is provided with a helical track 31, and the track 31 passes under the knife groove 12, and is ...
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