CN218965254U

CN218965254U - Auxiliary tapping tool for large-size self-tapping thread bush

Info

Publication number: CN218965254U
Application number: CN202223201601.8U
Authority: CN
Inventors: 陈宣臻; 王荣杰; 黄少宏; 何佳翰
Original assignee: Zhoushan 7412 Fac
Current assignee: Zhoushan 7412 Fac
Priority date: 2022-11-30
Filing date: 2022-11-30
Publication date: 2023-05-05
Anticipated expiration: 2032-11-30

Abstract

The utility model discloses a large-size self-tapping thread bush auxiliary tapping tool which is characterized by comprising a guide connecting sleeve, a tool locking bolt and a tool locking nut, wherein the guide connecting sleeve is divided into an upper connecting section which is used for being installed and is tightly matched with a unthreaded hole end in the thread bush and a lower guide section which is used for being in sliding fit with an installation hole of a connected piece; the screw rod of the tool locking bolt extending out of the guide connecting sleeve is connected with the internal thread of the threaded sleeve; the tool locking nut is connected with the tool locking bolt through threads, and the tool locking nut is positioned at the bottom of the guide section of the guide connecting sleeve.

Description

Auxiliary tapping tool for large-size self-tapping thread bush

Technical Field

The utility model relates to an auxiliary tapping tool for a threaded sleeve, in particular to an auxiliary tapping tool for a large-size self-tapping threaded sleeve.

Background

The thread bush is a novel product used for connecting an automobile structural part and converting the specification of a bolt on a new energy automobile, the general specification is often larger than M12, but the triangular self-tapping thread bush with the specification larger than M12 needs large enough initial axial force during assembly and needs to ensure the perpendicularity during the tapping of the thread bush; at present, all the installation tools of the self-tapping thread bush are installed by using manual tools, and the initial axial force and the perpendicularity of the thread bush during tapping cannot be ensured because the angles of the installation holes in practice are different.

Disclosure of Invention

The utility model aims to solve the technical problem of providing a large-specification self-tapping thread bush auxiliary tapping tool capable of providing initial axial force of a thread bush during tapping and guaranteeing verticality.

The technical scheme adopted for solving the technical problems is as follows: the utility model provides a supplementary frock of attacking of large scale self tapping thread bush which characterized in that: the tool locking device comprises a guide connecting sleeve, a tool locking bolt and a tool locking nut, wherein the guide connecting sleeve is divided into an upper connecting section which is used for being installed and is tightly matched with an unthreaded hole end in a threaded sleeve, and a lower guide section which is used for being in sliding fit with an installation hole of a connected piece; the tool locking bolt extends out of the screw rod of the guiding connecting sleeve part and is connected with the internal thread of the threaded sleeve; the tool locking nut is connected with the tool locking bolt through threads, and the tool locking nut is positioned at the bottom of the guide section of the guide connecting sleeve.

Further, the head of the tool locking bolt is provided with a metal washer for preventing the connected piece from being damaged. The metal washer is used for ensuring that the surface of the connected piece is not damaged in the process of providing axial force for the tool locking bolt.

Further, the outer diameter of the metal washer is smaller than the diameter of the mounting hole of the connected piece and larger than the diameter of the head of the tool locking bolt.

Further, the outer diameter of the connecting section of the guiding connecting sleeve is 0.02-0.06mm smaller than the diameter of the unthreaded hole of the threaded sleeve, and the outer diameter of the guiding section of the guiding connecting sleeve is 0.1-0.2mm smaller than the diameter of the mounting hole of the connected piece. The perpendicularity requirement during the introduction is ensured.

Further, the outer diameter of the connecting section of the guide connecting sleeve is smaller than that of the guide section of the guide connecting sleeve.

Furthermore, the inner wall of the guiding connecting sleeve is a smooth surface.

Further, the maximum outer circle size of the tool lock nut is smaller than the outer diameter of the guide section of the guide connecting sleeve and larger than the inner diameter of the guide section of the guide connecting sleeve.

Compared with the prior art, the utility model has the advantages that: the utility model discloses a large-size self-tapping thread bush auxiliary tapping tool for the first time, wherein a tool locking bolt is connected with an internal thread in the thread bush so as to provide initial axial force for tapping of the thread bush; as the threaded sleeve is tapped into the connected piece, the initial axial force provided by the tool can be gradually reduced; when the threaded sleeve is completely screwed in, the auxiliary tapping tool can be taken out by screwing out the tool locking bolt; the threaded sleeve is in a hollow state, the auxiliary tapping tool is arranged, the inner hole of the threaded sleeve can be prevented from being extruded and deformed during tapping, the functionality of the threaded sleeve is guaranteed, and the tool locking nut is used for preventing the guide connecting sleeve from falling off during screwing. The tool is suitable for the threaded sleeve with the specification larger than M12, provides enough axial force during installation, ensures the perpendicularity of the threaded sleeve during tapping, is small, light and convenient, and has wide applicability; time and labor are saved, and the method is efficient and quick; automatic alignment and high installation accuracy.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the description of the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.

FIG. 1 is a perspective view of an auxiliary tapping tool for a large-sized self-tapping screw set of the present utility model;

FIG. 2 is a cross-sectional view of the large-sized self-tapping sleeve auxiliary tapping tool of the present utility model;

FIG. 3 is a sectional view of an auxiliary tapping tool before tapping a threaded sleeve according to the present utility model;

FIG. 4 is a sectional view of an auxiliary tapping tool after the tapping of the thread bush of the present utility model;

FIG. 5 is a perspective view showing the state of the auxiliary tapping tool after the tapping of the thread bush;

FIG. 6 is a schematic diagram of the connection of the threaded sleeve after the auxiliary tapping tool is disassembled;

fig. 7 is a schematic view of the structure of the thread bushing of the present utility model.

Detailed Description

The utility model is described in further detail below with reference to the embodiments of the drawings.

Hereinafter, only certain exemplary embodiments are briefly described. As will be recognized by those of skill in the pertinent art, the described embodiments may be modified in numerous different ways without departing from the spirit or scope of the embodiments of the present utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive.

In the description of the embodiments of the present application, it should be understood that the terms "center," "longitudinal," "transverse," "length," "width," "thickness," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," "clockwise," "counterclockwise," "axial," "radial," "circumferential," "end," "side," etc. indicate or are based on the orientation or positional relationship shown in the drawings, merely for convenience of describing the embodiments of the present application and for simplicity of description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore should not be construed as limiting the embodiments of the present application.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include one or more such feature. In the description of the embodiments of the present application, the meaning of "a plurality" is two or more, unless explicitly defined otherwise.

In the embodiments of the present application, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured" and the like are to be construed broadly and include, for example, either permanently connected, removably connected, or integrally formed; may be a mechanical connection, and may be other connections; can be directly connected or indirectly connected through an intermediate medium, and can be communicated with the inside of two elements or the interaction relationship of the two elements. The specific meaning of the above terms in the embodiments of the present application will be understood by those of ordinary skill in the art according to the specific circumstances.

In the examples of the present application, unless explicitly specified and limited otherwise, a first feature "above" or "below" a second feature may include both the first and second features being in direct contact, or may include both the first and second features not being in direct contact but being in contact with each other through additional features therebetween. Moreover, a first feature being "above," "over" and "on" a second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature is higher in level than the second feature. The first feature being "under", "below" and "beneath" the second feature includes the first feature being directly under and obliquely below the second feature, or simply means that the first feature is less level than the second feature.

The following disclosure provides many different implementations, or examples, for implementing different configurations of embodiments of the present utility model. In order to simplify the disclosure of embodiments of the present application, components and arrangements of specific examples are described below. They are, of course, merely examples and are not intended to limit the embodiments of the present application.

The large-size self-tapping thread sleeve auxiliary tapping tool comprises a guide connecting sleeve 1, a tool locking bolt 2 and a tool locking nut 3, wherein the guide connecting sleeve 1 is divided into an upper connecting section which is used for being installed and tightly matched with a unthreaded hole end in a thread sleeve 4 and a lower guide section which is used for being in sliding fit with an installation hole of a connected piece 5, the guide connecting sleeve 1 is provided with a hollow inner cavity, a screw rod of the tool locking bolt 2 is matched with the inner cavity of the guide connecting sleeve 1, and the tool locking bolt 2 can reciprocate in the inner cavity of the guide connecting sleeve 1; the part of the tool locking bolt 2 extending out of the guide connecting sleeve 1 is connected with the internal thread of the thread sleeve 4; the tool locking nut 3 is in threaded connection with the tool locking bolt 2, and the tool locking nut 3 is located at the bottom of the guide section of the guide connecting sleeve 1.

In this particular embodiment, the head of the tool locking bolt 2 is provided with a metal washer 6 for preventing damage to the connected piece 5. The outer diameter of the metal washer 6 is smaller than the diameter of the mounting hole of the connected piece 5 and larger than the diameter of the head of the tool locking bolt 2. The outer diameter of the connecting section of the guide connecting sleeve 1 is 0.02-0.06mm smaller than the diameter of the unthreaded hole of the threaded sleeve 4, and the outer diameter of the guide section of the guide connecting sleeve 1 is 0.1-0.2mm smaller than the diameter of the mounting hole of the connected piece 5. The outer diameter of the connecting section of the guide connecting sleeve 1 is smaller than that of the guide section of the guide connecting sleeve 1. The inner wall of the guide connecting sleeve 1 is a smooth surface. The maximum excircle size of the tool locking nut 3 is smaller than the outer diameter of the guide section of the guide connecting sleeve 1 and larger than the inner diameter of the guide section of the guide connecting sleeve 1. The metal gasket 6 is a copper gasket.

The using method comprises the following steps: when the tool is used, the guide connecting sleeve 1 is arranged at the light hole end of the threaded sleeve 4, the tool locking nut 3 with the largest excircle size smaller than the diameter of the guide section of the guide connecting sleeve 1 is arranged below the guide connecting sleeve 1, the metal gasket 6 is arranged on the bottom surface of the connected piece 5, the metal gasket 6, the connected piece 5, the tool locking nut 3, the guide connecting sleeve 1 and the threaded sleeve 4 are sequentially connected through the tool locking bolt 2, after the whole connection, the tool state before the threaded sleeve 4 is tapped is as shown in fig. 3, in this state, the metal gasket 6 is attached to the bottom of the connected piece 5, and the tool locking bolt 2 provides initial axial force consistent with the direction of the mounting hole of the connected piece 5 for the self-tapping threaded sleeve 4, so that the threaded sleeve 4 can be tapped smoothly.

As the threaded sleeve 4 is tapped into the connected piece 5, the initial axial force provided by the tool is gradually reduced; when the threaded sleeve 4 is completely screwed into the mounting hole of the connected piece 5, as shown in fig. 4 and 5, in this state, the metal washer 6 is separated from the connected piece 5, the initial axial force provided by the tool locking bolt 2 for the self-tapping threaded sleeve 4 disappears, the tool locking bolt 2 can be screwed out to detach the auxiliary tool, and the removed state is as shown in fig. 6, because the connected piece 5 is mostly made of aluminum alloy materials, the inside of the mounting hole of the threaded sleeve 4 is extruded to form a threaded surface after being tapped; as shown in fig. 7, the thread bush 4 is in a hollow state, and the auxiliary tapping tool is present, so that the thread bush 4 can be ensured not to be extruded and deformed during tapping, and the functionality of the thread bush 4 is ensured. Because the depth of the mounting holes of the connected piece 5 is different, the length of the tool locking bolt 2 can be changed along with the depth, and the screw thread specification of the tool locking bolt 2 can be adjusted according to the internal screw thread specification of the screw thread sleeve 4.

The above description is not intended to limit the utility model, nor is the utility model limited to the examples described above. Variations, modifications, additions, or substitutions will occur to those skilled in the art and are therefore within the spirit and scope of the utility model.

Claims

1. The utility model provides a supplementary frock of attacking of large scale self tapping thread bush which characterized in that: the tool locking device comprises a guide connecting sleeve, a tool locking bolt and a tool locking nut; the guide connecting sleeve is divided into an upper connecting section which is used for being installed and tightly matched with the unthreaded hole end in the threaded sleeve and a lower guide section which is used for being in sliding fit with the installation hole of the connected piece, the guide connecting sleeve is provided with a hollow inner cavity, the screw rod of the tool locking bolt is matched with the inner cavity of the guide connecting sleeve, and the tool locking bolt can reciprocate in the inner cavity of the guide connecting sleeve; the tool locking bolt extends out of the screw rod of the guiding connecting sleeve part and is connected with the internal thread of the threaded sleeve; the tool locking nut is connected with the tool locking bolt through threads, and the tool locking nut is positioned at the bottom of the guide section of the guide connecting sleeve.

2. The large-scale self-tapping thread sleeve auxiliary tapping tool as set forth in claim 1, wherein: the head of the tool locking bolt is provided with a metal washer for preventing the connected piece from being damaged.

3. The large-scale self-tapping thread sleeve auxiliary tapping tool as claimed in claim 2, wherein: the outer diameter of the metal washer is smaller than the diameter of the mounting hole of the connected piece and larger than the diameter of the head of the tool locking bolt.

4. The large-scale self-tapping thread sleeve auxiliary tapping tool as set forth in claim 1, wherein: the outer diameter of the connecting section of the guide connecting sleeve is 0.02-0.06mm smaller than the diameter of the unthreaded hole of the threaded sleeve, and the outer diameter of the guide section of the guide connecting sleeve is 0.1-0.2mm smaller than the diameter of the mounting hole of the connected piece.

5. The large-scale self-tapping sleeve auxiliary tapping tool according to claim 4, wherein: the outer diameter of the connecting section of the guide connecting sleeve is smaller than that of the guide section of the guide connecting sleeve.

6. The large-scale self-tapping sleeve auxiliary tapping tool according to claim 4, wherein: the inner wall of the guide connecting sleeve is a smooth surface.

7. The large-scale self-tapping sleeve auxiliary tapping tool according to any one of claims 1-6, wherein: the maximum excircle size of the tool locking nut is smaller than the outer diameter of the guide section of the guide connecting sleeve and larger than the inner diameter of the guide section of the guide connecting sleeve.