Safe electric drill capable of rapidly feeding

Abstract

The invention discloses a safe electric drill capable of rapidly feeding. The safe electric drill comprises an electric drill main body internally provided with a driving mechanism and a drill bit part arranged on the electric drill main body, wherein the driving mechanism comprises a motor gearbox and an automatic feeding assembly driven by and connected with the motor gearbox; the automatic feeding assembly comprises a rotatable telescopic shaft, a main telescopic shaft for driving the rotatable telescopic shaft to rotate, a telescopic shaft driving block for driving the telescopic shaft to move and a lead screw which can rotate and is in contact with the telescopic shaft driving block; the main telescopic shaft extends into the telescopic shaft and can slide; one end of the main telescopic shaft is provided with a driving gear, and the other end of the main telescopic shaft is provided with the telescopic shaft driving block for driving the telescopic shaft to rotate; a screw thread matched with a screw thread on the surface of the lead screw is arranged at the contact part of the telescopic shaft driving block and the lead screw; and a chuck shaft is arranged in one end of the telescopic shaft in a penetrating way and is provided with a chuck on which a drill bit is arranged. By using the safe electric drill disclosed by the invention, the automatic feeding of a drill bit can be conveniently realized, drilling can be conveniently realized, and the drilling depth is adjustable.

Description

technical field [0001] The invention belongs to the field of electric tools, and in particular relates to a safety electric drill capable of fast feeding. Background technique [0002] Electric drill is an electric processing tool commonly used in daily operations. It can be divided into three types: electric hand drill, impact drill, and hammer drill. Its working principle is that the motor rotor of an electromagnetic rotary or electromagnetic reciprocating small-capacity motor does magnetic field cutting Running, the operating device is driven by the transmission mechanism, and the gear is driven to increase the power of the drill bit, so that the drill bit scrapes the surface of the object and penetrates the object better. [0003] At present, electric drills are widely used in construction and industrial fields for reinforcement of building beams, panels, columns, walls, etc., decoration, wall installation, brackets, railings, billboards, air-conditioning outdoor units, ...

AI Technical Summary

Problems solved by technology

[0004] The electric drill in the prior art also has some other deficiencies, such as the electric drill bit rarely has a forward feed motion except for the rotary motion, and the depth of the drilled hole can only be judged by visual experience, and the same hole is required to drill multiple depths It cannot be accurately controlled; and most of the drill bits in the existing electric drill technology are exposed, which has certain potential safety hazards, and when the object to be drilled is made of wood or gypsum, a lot of dust will be generated, which is also harmful to the health of the builders. the harm of

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