CN212239313U

CN212239313U - Hand-held type system hole drill bushing

Info

Publication number: CN212239313U
Application number: CN202020819357.3U
Authority: CN
Inventors: 李巍; 艾冬; 徐亚妹
Original assignee: AVIC XAC Commercial Aircraft Co Ltd
Current assignee: AVIC XAC Commercial Aircraft Co Ltd
Priority date: 2020-05-15
Filing date: 2020-05-15
Publication date: 2020-12-29
Anticipated expiration: 2030-05-15

Abstract

The utility model provides a hand-held type system hole drill bushing, system hole drill bushing body contains cup and lower cup, and the opening of going up the cup is upwards, and the opening of lower cup is downwards, goes up the cup and is a cylindrical transition body down between the cup, inlays at the center of cylindrical transition body and has a T type drill bushing, has the direction through-hole at the axial center of T type drill bushing, the lower edge department of lower cup be equipped with the chip removal hole.

Description

Hand-held type system hole drill bushing

Technical Field

The application relates to the technical field of mechanical hole making, in particular to a handheld hole making drill sleeve.

Background

The drilling sleeve has four types, namely a fixed drill sleeve, a replaceable drill sleeve, a quick-change drill sleeve and a special drill sleeve, and is usually embedded into a drill plate by adopting 'interference fit'.

The outer wall of the conventional handheld vertical drill bushing is usually smooth, so that the situation that a hand slips easily occurs in actual use, the contact surface between the conventional handheld vertical drill bushing and a surface to be processed is small in use, and the unstable positioning situation easily occurs, so that the problem is improved by the handheld vertical drill bushing for hole making.

Disclosure of Invention

The utility model aims at providing a hand-held type system hole drill bushing to solve the problem that proposes among the above-mentioned background art.

The hand-held hole making drill bushing is characterized in that a hole making drill bushing body comprises an upper cup body and a lower cup body, the upper cup body is upward in opening, the lower cup body is downward in opening, a cylindrical transition body is arranged between the upper cup body and the lower cup body, a T-shaped drill bushing is embedded in the center of the cylindrical transition body, a guide through hole is formed in the axial center of the T-shaped drill bushing, and a chip removal hole is formed in the lower edge of the lower cup body.

When the T-shaped drilling sleeve is used, an operator holds the cylindrical transition body in the middle of the drilling sleeve body by a hand, presses the lower cup body on the surface of a workpiece, enables the guide through hole of the T-shaped drilling sleeve to be coaxial with a hole to be drilled on the workpiece, and uses a drilling tool to drill through the guide through hole.

In order to increase the hand-held friction force, the outer surface of the drilling sleeve body is provided with an anti-slip layer.

In order to increase the attaching force between the hole-making drill bushing and the workpiece, an annular flange edge is arranged on the lower edge of the lower cup body of the hole-making drill bushing body, and a layer of silica gel anti-slip ring is arranged at the bottom of the annular flange edge.

Compared with the prior art, the beneficial effects of the utility model are that: 1) the utility model discloses in, be equipped with the antislip strip through the drill bushing pole outside at T type drill bushing, increaseed the degree of inlaying between T type drill bushing and the system hole drill bushing body, effectively prevented to take place relative rotation between T type drill bushing and the system hole drill bushing body to make the direction auxiliary action of this system hole drill bushing better, more accurate. 2) The utility model discloses in, set up the skid resistant course through boring the cover body outside in the system hole, strengthened operating personnel's handheld frictional force, prevent that the in-process of boring the cover from taking place the condition of relative slip. 3) The utility model discloses in, through the annular flange limit and the silica gel antiskid circle that set up in system hole drill bushing body bottom, the area of contact between multiplicable whole system hole drill bushing and the work piece face to improve the stability of system hole drill bushing, avoid system hole drill bushing in the gliding condition of work piece surface in the in-service use process. 4) The utility model discloses in, be four chip removal mouths that the circumference distributes through the bottom of cup under, can discharge the residue that drilling produced, and the chip groove is equipped with 25 inclination to the outside, makes residue exit area bigger, is favorable to the quick discharge of residue, avoids the drill bit rupture.

The present application is described in further detail below with reference to the accompanying drawings of embodiments.

Drawings

Fig. 1 is a schematic structural diagram of the appearance of a handheld hole making drill bushing.

FIG. 2 is a schematic diagram of the T-shaped drill bushing and the drill bushing body.

Fig. 3 is a schematic sectional structure diagram of a handheld hole making drill bushing.

FIG. 4 is a schematic view of the bottom anti-slip structure of the hand-held hole-making drill bushing

The numbering in the figures illustrates: the drilling tool comprises a drilling sleeve body 1, an upper cup body 2, a cylindrical transition body 3, anti-slip corrugations 4, a 5T-shaped drilling sleeve, a drilling sleeve rod 6, a central hole 7, anti-slip strips 8, a guide through hole 9, a lower cup body 10, an annular flange edge 11, chip removal holes 12, chip removal grooves 13, arc-shaped lugs 14, a frosted particle layer 15 and a silica gel anti-slip ring 16.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, and not all embodiments, and all other embodiments obtained by those skilled in the art without any inventive work are within the scope of the present invention based on the embodiments of the present invention.

Referring to the attached drawings, the hand-held hole-making drill bushing of the application comprises a hole-making drill bushing body 1, an upper cup body 2 and a lower cup body 10, wherein the upper cup body 2 is provided with an upward opening, the lower cup body 10 is provided with a downward opening, a cylindrical transition body 3 is arranged between the upper cup body 2 and the lower cup body 10, a T-shaped drill bushing 5 is embedded in a central hole 7 of the cylindrical transition body 3, a guide through hole 9 is formed in the axial center of the T-shaped drill bushing 5, and a chip removal hole 12 is formed in the lower edge of the lower cup body 10.

The upper hollow cup body 2 is used for protecting hands of an operator and preventing a drilling tool from injuring the operator, the lower hollow cup body 10 is used for supporting the whole hole-making drill bushing, collecting metal chips generated by drilling, preventing the metal chips from splashing to hurt people and pollute the environment, and the collected metal chips are discharged through the chip removal holes 12 located at the lower edge of the lower cup body 10.

In implementation, in order to strengthen the combination between the T-shaped drill sleeve 5 and the cylindrical transition body 3 in the middle of the hole-making drill sleeve body 1 and prevent the T-shaped drill sleeve 5 from being relatively opposite to the hole-making drill sleeve body 1 during drilling, a plurality of anti-slip strips 8 are longitudinally and uniformly distributed on the outer side of the drill sleeve rod 6 of the T-shaped drill sleeve 5, and the T-shaped drill sleeve 5 is tightly embedded into a whole with the central hole 7 of the cylindrical transition body of the hole-making drill sleeve body through the anti-slip strips 8.

In order to enhance the friction force of the outer surface of the drilling sleeve body 1 and prevent the slipping phenomenon of the hand of an operator during working, the outer surface of the drilling sleeve body is preferably provided with an anti-slip layer. The anti-slip layer is preferably positioned on the lower end surface of the upper cup body, the outer surface of the cylindrical transition body and the upper end surface of the lower cup body of the drilling sleeve body. The anti-slip layer on the outer surface of the cylindrical transition body 3 in the embodiment is an annular anti-slip corrugation 4. The anti-slip layer on the surface of the upper cup body 2 and the lower cup body 10 is a frosted particle layer 15.

In order to increase the contact area and the friction force between the drilling sleeve body 1 and a workpiece and enhance the stability of the drilling sleeve body, the lower edge of the lower cup body 10 of the drilling sleeve body is provided with an annular flange edge 11, in the embodiment, the bottom of the annular flange edge 11 is further provided with a layer of silica gel anti-slip ring 16, and four arc lugs 14 for increasing the contact area and the friction force are further uniformly distributed on the outer side of the silica gel anti-slip ring 16.

In order to ensure smooth chip removal in the drilling process, in the embodiment, four chip removal holes 12 are formed in the lower edge of the lower cup body 10 of the drilling drill bushing body, the chip removal holes 12 are expanded into chip removal grooves 13 on the annular flange edge 11, and the chip removal grooves 13 are provided with inclination angles inclined outwards by 25 degrees. The outlet area of the metal chips is larger, the discharge is facilitated, and the breakage of the drill bit is avoided.

The handheld hole drilling sleeve is simple in overall structure, convenient to operate, rich in functions, high in stability and practicability and has certain popularization value.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The hand-held hole making drill bushing is characterized in that a hole making drill bushing body comprises an upper cup body and a lower cup body, the upper cup body is upward in opening, the lower cup body is downward in opening, a cylindrical transition body is arranged between the upper cup body and the lower cup body, a T-shaped drill bushing is embedded in the center of the cylindrical transition body, a guide through hole is formed in the axial center of the T-shaped drill bushing, and a chip removal hole is formed in the lower edge of the lower cup body.

2. The hand-held hole-making drill bushing according to claim 1, wherein a plurality of anti-slip strips are longitudinally and uniformly distributed on the outer side of the drill bushing rod of the T-shaped drill bushing, and the T-shaped drill bushing is embedded into a whole with the center of the cylindrical transition body of the hole-making drill bushing body through the anti-slip strips.

3. The hand-held hole-making drill bushing according to claim 1, wherein the outer surface of the hole-making drill bushing body has an anti-slip layer.

4. The hand-held hole-making drill bushing according to claim 3, wherein the anti-slip layer is located on the lower end surface of the upper cup body, the outer surface of the cylindrical transition body and the upper end surface of the lower cup body of the hole-making drill bushing body.

5. The hand-held hole-making drill bushing according to claim 3 or 4, wherein the anti-slip layer on the outer surface of the cylindrical transition body is an annular anti-slip corrugation.

6. The hand-held hole-making drill bushing according to claim 3 or 4, wherein the anti-slip layer on the surface of the upper and lower cup bodies is a layer of abrasive particles.

7. The hand-held hole-making drill bushing according to claim 1, wherein the lower rim of the lower cup of the hole-making drill bushing body has an annular flange.

8. The hand-held hole-making drill bushing according to claim 7, wherein a layer of silica gel anti-slip ring is provided at the bottom of the annular flange of the lower cup body of the hole-making drill bushing body.

9. The hand-held hole-making drill bushing according to claim 8, wherein four circular-arc lugs are uniformly distributed on the outer side of the silica gel anti-slip ring.

10. The hand-held hole-making drill bushing according to claim 1, wherein four chip removal holes are provided at the lower edge of the lower cup of the hole-making drill bushing body, the chip removal holes extending into chip removal grooves on the annular flange, the chip removal grooves having an inclination that is inclined to the outside.