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: 2011-05-04
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 in conjunction with the accompanying drawings and embodiments.
[0022] Spinning hand drill base consists of drill handle 1, socket 2, inner groove 3, side groove 4, locking piece 5, locking rod 6, sleeve 7, rotating shaft 8, chuck 9, insert 10, pull ring 11. Top cover 12, spring 13, fixing bar 14 and rare earth magnet 15 constitute.
[0023] The drill shank 1 is cylindrical, and the lower end of the drill shank 1 is a drill bit. There is an oval socket 2 on the upper surface of the drill shank 1. There is an inner groove 3 inside the drill shank 1 below the socket 2. The inner groove 3 is connected to the drill bit. The cylindrical space of the shank 1 is coaxial, and a longitudinal side groove 4 is arranged on the side wall of the drill shank 1 .
[0024] The sleeve 7 is cylindrical with an open lower end. The middle part of the sleeve 7 has a ring integral with the sleeve 7. The top of the sleeve 7 has a through ...
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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 axis of 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 is fixed 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 usually fixes the drill shank through three fan-shaped structures. When fixing, it is necessary to first 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, there are disadvantages of inconvenient installation and unstable installation in the existing technical field of drill shank fixing. Contents of the invention [0003] In order to solve the deficiencies of the prior art, the present invention provides a spin-type hand drill bit bas...
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