Spinning-type hand drill bit substrate
A drill bit and drill shank technology, which is applied in portable drilling rigs, drilling/drilling equipment, metal processing equipment, etc., can solve problems such as inconvenient installation, easy slipping of the drill shank and base, and unstable installation, etc., to avoid Sliding, firm and reliable effect of lateral fixation
Inactive Publication Date: 2012-09-19
海门嘉濠建材贸易有限公司
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Problems solved by technology
[0002] The base of the existing electric hand drill usually fixes the drill shank through three fan-shaped structures. When fixing, it is necessary to twist the casing on the three fan-shaped structures to initially fix the drill shank, and then use a wrench to fix the drill shank. It takes a lot of force to fix the drill shank and the base of the electric hand drill, but during the high-speed operation of the drill, due to its own high-frequency vibration, it is still easy to slip between the drill shank and the base
Therefore, in the technical field that existing drill shank is fixed, there are disadvantages of inconvenient installation and insecure installation at the same time.
Method used
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[0021] The present invention will be further described below with reference to the drawings and embodiments.
[0022] The base of the spinning hand drill bit consists of the bit shank 1, the socket 2, the inner groove 3, the side groove 4, the locking piece 5, the locking rod 6, the sleeve 7, the rotating shaft 8, the chuck 9, the molding 10, and the pull ring 11. The top cover 12, the spring 13, the fixing strip 14 and the rare earth magnet 15 are composed.
[0023] The drill bit shank 1 is cylindrical, the lower end of the drill bit shank 1 is a drill bit, the upper end of the drill bit shank 1 has an oval socket 2, and the drill bit shank 1 below the socket 2 has an inner groove 3 inside which is connected to the drill bit. The shank 1 is a coaxial cylindrical space, and a longitudinal side groove 4 is provided on the side wall of the drill shank 1.
[0024] The sleeve 7 is a cylindrical shape with an open lower end. The middle of the sleeve 7 has an integral ring with the sleeve...
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The invention relates to a motor-driven hand drill bit accessory, in particular to a spinning-type hand drill bit substrate. The spinning-type hand drill bit substrate is composed of a bit handle, a jack, an internal groove, a side groove, a locking piece, a locking rod, a sleeve, a spindle, a chuck, an embedded strip, a pull ring, a top cap, a spring, a fixed strip and a rare earth magnet, wherein the upper end surface of the bit handle is provided with the elliptic jack, and a cylindrical space is formed in the bit handle below the jack; the bottom end of the locking rod is provided with the locking piece which is an elliptic cylinder; and on the plane, the projection of the center point of the cross section of the longitudinal groove on the side wall of a top cap falls on the long axisof the elliptic cross section of the locking piece. The bit handle is longitudinally fixed by a non-threaded rotational locking method, and compared with the existing technology in which the drill isfixed only by applying large force by a wrench, the invention saves more power and is convenient.
Description
Technical field [0001] The invention relates to an electric hand drill accessory, in particular to a spinning type hand drill bit base. Background technique [0002] The base of the existing electric hand drill is usually fixed by three fan-shaped constructions to fix the drill bit handle. When fixing, you need to twist the casing on the three fan-shaped constructions to initially fix the drill bit handle, and then use a wrench A lot of force can be used to fix the drill bit shank and the base of the electric hand drill, but during the high-speed operation of the drill bit, due to its own high-frequency vibration, it is still easy to slip between the bit shank and the base. . Therefore, the existing technical field of bit shank fixing has the disadvantages of inconvenient and unstable installation. Summary of the invention [0003] In order to solve the shortcomings of the prior art, the present invention provides a spinning type hand drill bit base that can be installed and fir...
Claims
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IPC IPC(8): B23B45/02
Inventor 何文仙
Owner 海门嘉濠建材贸易有限公司