Anti-abrasion auxiliary centering device for handheld drilling equipment

Abstract

The invention relates to the related field of bearings, and discloses an anti-abrasion auxiliary centering device for handheld drilling equipment. The anti-abrasion auxiliary centering device for the handheld drilling equipment comprises a main box body, wherein a centering cavity penetrating front and back is formed in the main box body; two tight supporting movable cavities which are mutually symmetrical up and down are communicated with the right side of the centering cavity; tight supporting sliding blocks are connected between the front end walls and the rear end walls of the tight supporting movable cavities in a sliding fit manner; and the right end walls of the tight supporting movable cavities are fixedly connected with end contact blocks. When a twist drill is used for drilling and auxiliary centering is needed, a poking plate is poked to enable a centering bearing to move rightwards to correspond to the center of a drilled hole, a friction block clamps the twist drill, and then centering of the centering bearing is achieved through two tight supporting bearings, so that centering of the twist drill is achieved; and when the twist drill is used for machining, the friction block drives an inner ring of the centering bearing to rotate, so that the friction abrasion of the twist drill caused by auxiliary centering is effectively prevented by fully utilizing the bearing.

Description

technical field [0001] The invention relates to the related field of bearings, in particular to an anti-wear auxiliary centering device for hand-held drilling equipment. Background technique [0002] At present, when manually using hand-held drilling equipment for drilling, the drilling accuracy mainly depends on the technical level of the operator, and it is difficult to guarantee the drilling accuracy. Using a guide sleeve can improve the drilling accuracy, but when using a twist drill At the same time, due to certain errors in manual operation, large friction and wear are likely to occur between the twist drill and the guide sleeve, and the rotation of the inner and outer rings of the bearing does not interfere with each other. The use of bearings can solve the problem of tool friction and wear, but the existing The hand-held punching and centering device is mainly based on the guide sleeve. Contents of the invention [0003] The object of the present invention is to p...

AI Technical Summary

Problems solved by technology

[0002] At present, when manually using hand-held drilling equipment for drilling, the drilling accuracy mainly depends on the technical level of the operator, and it is difficult to guarantee the drilling accuracy. Using a guide sleeve can improve the drilling accuracy, but when using a twist drill At the same time, due to certain errors in manual operation, large friction and wear are likely to occur between the twist drill and the guide sleeve, and the rotation of the inner and outer rings of the bearing does not interfere with each other. The use of bearings can solve the problem of tool friction and wear, but the existing The hand-held punching and centering device is mainly based on the guide sleeve

Images