Drill bit expanding device for electric drill

An expansion device and electric drill technology, applied in positioning devices, drilling/drilling equipment, parts of boring machines/drilling machines, etc., can solve the problems of frequent drill bit replacement, expand the scope of application, reduce coaxiality errors, and reduce the overall effect of size

Active Publication Date: 2021-01-29
CHENGDU AERONAUTIC POLYTECHNIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the above-mentioned problems in the prior art, the present invention provides a drill bit extension device for electric drills, which s

Method used

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  • Drill bit expanding device for electric drill
  • Drill bit expanding device for electric drill
  • Drill bit expanding device for electric drill

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[0029]The following describes the specific embodiments of the present invention to facilitate those skilled in the art to understand the present invention, but it should be clear that the present invention is not limited to the scope of the specific embodiments, for those of ordinary skill in the art, as long as various changes These changes are obvious within the spirit and scope of the present invention defined and determined by the appended claims, and all inventions and creations that utilize the concept of the present invention are protected.

[0030]Such asFigure 1 ~ Figure 2As shown, this solution provides a drill bit extension device for an electric drill, which includes an extension base 1. The extension base 1 has a U-shaped flat plate structure, and the closed end of the extension base 1 is used to interact with the output part of the electric drill. The two vertical ends of the rotating shaft 2 and the expansion base 1 opposite to each other are rotatably connected.

[0031]Su...

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Abstract

The invention provides a drill bit expanding device for an electric drill, which comprises an expanding base, wherein a mounting notch penetrating through the expanding base is formed in the top surface of one end of the expanding base, a rotary shaft rotationally connected to the expanding base is arranged in the mounting notch, and a clamping block sleeves the rotary shaft; a plurality of slidegrooves are formed in the two opposite side surfaces of the clamping block, a fixing plate is arranged on the side surfaces where the slide grooves are located through locking pieces, a penetrating hole penetrating through the fixing plate is formed in the top end of the fixing plate, a fixing cylinder is arranged in the penetrating hole, and slide protrusions embedded into the slide grooves are arranged on the outer wall of the fixing cylinder outwards in the radial direction; a slide hole through which the slide protrusions penetrates is formed in the fixing plate, and the slide hole communicates with the penetrating hole; the portions, on the two sides of the mounting notch, of the expanding base are sleeved with fixing bases, and the expanding base is sleeved with a limiting ring. Theproblem that in the prior art, when a traditional electric drill machines hole diameters of different sizes and types, a drill bit is frequently replaced is solved.

Description

technical field [0001] The invention relates to the technical field of electric drill devices, in particular to a drill bit extension device for electric drills. Background technique [0002] An electric drill is a drilling tool that uses electricity as power. It is a conventional product in electric tools and is also the most demanded electric tool product. Traditional electric drills can only install one type of drill bit at a time, but in actual work, drill bits of various specifications are required, especially for drilling and screwing. It is necessary to frequently replace the drilling bit and screwdriver bit back and forth, requiring frequent installation. And dismantling the drill bit, the whole operation process is very loaded down with trivial details, inefficiency. Contents of the invention [0003] In view of the above-mentioned problems in the prior art, the present invention provides a drill bit extension device for electric drills, which solves the problem ...

Claims

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Application Information

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IPC IPC(8): B23B47/00B23Q3/00
CPCB23B47/00B23Q3/00
Inventor 李勇杨维王秋林朱金波
Owner CHENGDU AERONAUTIC POLYTECHNIC
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