Title:
VARIABLE DRILL BIT DIAMETER PUNCHING MECHANISM
Document Type and Number:
WIPO Patent Application WO/2018/082354
Kind Code:
A1
Abstract:
A variable drill bit diameter punching mechanism, which comprises a motor (2), a first gear (4), a spiral spring (5), a second gear (7), a cylindrical shaft (8), an inner shaft (15), a first spiral wall (17), a second rotating wheel (21), and a drill bit (25), where a first support plate (6), the cylindrical shaft (8), the second gear (7), and a second support plate (16) compose one rotating integral body, the spiral wall (17) rotates with the second support plate (16), the inner shaft (15) and a centrifuge plate (18) are fixed together, the inner shaft (15) rotates as the centrifuge plate (18) rotates around the axis line of the inner shaft (15), the spiral spring (5) is provided between the inner shaft (15) and the cylindrical shaft (8), and the spiral spring (5) effects the storing and releasing of energy. When the cylindrical shaft (8) starts to rotate, the second rotating wheel (21), in the process of rotating with the rotation of the first spiral wall (17), moves relatively along a track on the first spiral wall (17) until a force produced by the spiral spring (5) is basically canceled out by a centrifugal force, at which time, the radial distance of the drill bit (25) is fixed; when the rotational speed of the cylindrical shaft (8) increases, the drill bit (25) is kept at a new radial position; holes of different diameters can be drilled with different radial positions. Improved use effects are provided.
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| WO/2022/212864 | CORE DRILL |
| JP2013244554 | BALANCE CYLINDER |
Inventors:
HU GUIBO (CN)
Application Number:
PCT/CN2017/094960
Publication Date:
May 11, 2018
Filing Date:
July 28, 2017
Export Citation:
Assignee:
HU GUIBO (CN)
International Classes:
B23B47/26
Foreign References:
| CN106346052A | 2017-01-25 | |||
| CN106392142A | 2017-02-15 | |||
| US20140341666A1 | 2014-11-20 | |||
| CN105149652A | 2015-12-16 | |||
| CN1111180A | 1995-11-08 |
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