CN219705008U - Steel wire thread insert extracting tool - Google Patents

Abstract

The utility model relates to the technical field of machining, in particular to a steel wire thread insert disassembling tool, which comprises the following components: the locking device comprises a loop bar, a supporting sleeve, a locking bar and a locking block; the support sleeve is arranged at the end part of the loop bar, at least two open slots are formed in the position, which is not connected with the loop bar, of the support sleeve, the open slots are radially arranged along the support sleeve, and the locking blocks are arranged in each open slot; the locking rod is arranged in the loop bar, the end part of the locking rod extends into the supporting sleeve, the part of the locking rod extending into the supporting sleeve is a first conical surface, and the inner side surface of the locking block is a second conical surface matched with the first conical surface. The dismounting tool can better dismount the steel wire thread insert, and prevent the engine parts from being scrapped due to the fact that the threaded holes cannot be used.

Description

Steel wire thread insert extracting tool

Technical Field

The utility model relates to the technical field of machining, in particular to a steel wire thread insert disassembling tool.

Background

With the continuous development of engines, people pay attention to the oil consumption of the engines, and in order to reduce the weight, parts of the engines, such as a machine body and a cylinder cover, are manufactured and processed by adopting aluminum alloy. In the manufacturing process, it is generally necessary to insert wire thread inserts in order to protect the threads of the aluminum alloy parts from scrap. The steel wire thread sleeve is a novel internal thread fastener, is suitable for threaded connection, forms standard threads by screwing in and fastening in a threaded hole of one of the connected pieces, and screws (or bolts) are screwed in the threaded hole again, and is also called a thread sleeve for short.

In the prior art, a multi-edge tool knife is adopted for disassembling the steel wire screw sleeve, the edge of the multi-edge tool knife is ground into an acute angle, when the steel wire screw sleeve is disassembled, an assembly worker firstly presses the tool downwards with force, so that the sharp edge of the tool is pricked into the end part of the steel wire screw sleeve, and then the upper end of the tool is rotated to disassemble the steel wire screw sleeve.

The multi-edge tool knife needs to be pressed downwards by an assembler so as to be pricked into the end part of the steel wire screw sleeve, the using force is easy to grasp, and the steel wire screw sleeve is possibly deformed or even broken due to overlarge force, so that the steel wire screw sleeve cannot be disassembled; in addition, such multi-edged tool blades may break into the threaded bore during the removal process, resulting in difficulty in removing the broken tool blade.

Disclosure of Invention

Aiming at the defects existing in the prior art, the embodiment of the utility model aims to provide a steel wire thread insert disassembling tool which can better disassemble and assemble the steel wire thread insert and prevent engine parts from being scrapped due to the fact that threaded holes cannot be used.

In order to achieve the above object, the embodiment of the present utility model provides the following technical solutions:

a wire thread insert removing tool comprising: the locking device comprises a loop bar, a supporting sleeve, a locking bar and a locking block; the support sleeve is arranged at the end part of the loop bar, at least two open slots are formed in the position, which is not connected with the loop bar, of the support sleeve, the open slots are radially arranged along the support sleeve, and the locking blocks are arranged in each open slot; the locking rod is arranged in the loop bar, the end part of the locking rod extends into the supporting sleeve, the part of the locking rod extending into the supporting sleeve is a first conical surface, and the inner side surface of the locking block is a second conical surface matched with the first conical surface.

Preferably, the locking rod is in threaded connection with the loop bar, an external thread is arranged on the outer circle of the locking rod, and an internal thread matched with the external thread of the locking rod is arranged on the inner hole of the loop bar.

Preferably, the loop bar is detachably connected with the support sleeve.

Preferably, the loop bar and the supporting sleeve are connected through threads, and the screwing direction of the threads of the loop bar and the supporting sleeve is opposite to that of the steel wire thread sleeve to be disassembled.

Preferably, the locking block is of a T-shaped structure and comprises a large end and a small end, the large end of the locking block is arranged in the inner hole of the supporting sleeve, and the small end of the locking block is arranged in the opening groove of the supporting sleeve and can move radially along the opening groove.

Preferably, the outer side surface of the small end of the locking block is an arc surface.

Preferably, the number of the open slots is four, and the four open slots are arranged in a circumferential array manner.

Preferably, the inner hole of the supporting sleeve is a step hole and comprises a large hole and a small hole, and the open slot is arranged on the peripheral wall of the position corresponding to the large hole.

Preferably, the end of the loop bar is provided with a first rotating part for rotating the loop bar.

Preferably, the end of the locking lever is provided with a second rotating part for rotating the locking lever.

One or more technical solutions provided in the embodiments of the present utility model at least have the following technical effects or advantages:

1. according to the dismounting tool disclosed by the utility model, the outer contour diameter of the locking block is gradually increased through the matching of the first conical surface and the second conical surface so as to lock the steel wire screw sleeve, so that the situation that the steel wire screw sleeve is deformed or even broken due to overlarge force is reduced because the steel wire screw sleeve is axially moved and extruded along the steel wire screw sleeve in the prior art instead of radially moving and extruding the steel wire screw sleeve through the conical surface matched with the locking block, the using force is better controlled, and the technical requirements on assembly staff are low.

2. After the dismounting tool is broken, the locking rod can be taken out firstly, and no supporting force in the middle of the locking block can become loose, so that the broken dismounting tool can be taken out easily, and the use is convenient.

Additional aspects of the utility model will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

In order to make the above objects, features and advantages of the present utility model more comprehensible, preferred embodiments accompanied with figures are described in detail below.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model.

FIG. 1 is a schematic view of a prior art removal tool;

FIG. 2 is a cross-sectional view of a removal tool according to an embodiment of the present utility model;

FIG. 3 is a cross-sectional view of a removal tool provided in an embodiment of the present utility model;

FIG. 4 is a schematic view of a support sleeve according to an embodiment of the present utility model;

FIG. 5 is a schematic view of a locking block according to an embodiment of the present utility model;

FIG. 6 is a schematic diagram of a removal tool according to an embodiment of the present utility model;

in the figure: 1. a detaching tool; 11. a loop bar; 12. a locking lever; 13. a support sleeve; 131. an open slot; 14. a locking block; 141. a small end; 142. a large end; 143. a second conical surface; 2. a steel wire thread sleeve;

the mutual spacing or dimensions are exaggerated for the purpose of showing the positions of the various parts, and the schematic illustrations are used for illustration only.

Detailed Description

It should be noted that the following detailed description is illustrative and is intended to provide further explanation of the utility model. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this utility model belongs.

It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of exemplary embodiments according to the present utility model. As used herein, the singular forms "a," "an," and "the" are intended to include the plural forms as well, unless the utility model clearly indicates otherwise, and it is to be understood that the terms "comprises" and/or "comprising" when used in this specification are taken to specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof.

For convenience of description, the words "upper" and "lower" in the present utility model denote only the correspondence with the upper and lower directions of the drawing itself, and do not limit the structure, only for convenience of description and simplification of description, and do not indicate or imply that the apparatus or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as limiting the present utility model. The terms "first," "second," and the like of the present utility model are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first", "a second", etc. may explicitly or implicitly include one or more such feature.

As shown in fig. 1, a schematic diagram of a multi-edge tool knife commonly used in the prior art is provided, wherein the left side is a front view of the multi-edge tool knife, the right side is a left view of the multi-edge tool knife, the multi-edge tool knife comprises a sleeve unloading handle and a rotary handle, the sleeve unloading handle is a cylinder, one end of the sleeve unloading handle is a cone frustum extending forwards, a disassembly edge is uniformly sharpened on the cone frustum along the axial direction of the sleeve unloading handle, and the rotary handle is arranged at the other end of the sleeve unloading handle. When the multi-edge tool knife is used, an assembler is required to forcefully press the steel wire thread insert downwards, so that the use force is not easy to grasp, and the steel wire thread insert is possibly deformed or even broken due to overlarge force, so that the steel wire thread insert cannot be disassembled; on the other hand, the end part of the multi-edge tool knife is thinner, and the situation that the end part of the tool knife is broken in the threaded hole can not be avoided in the disassembling process, so that the broken tool knife is difficult to take out and is more difficult to disassemble.

In order to solve the above technical problems, an embodiment of the present utility model provides a wire thread insert removing tool, as shown in fig. 2, including: a loop bar 11, a supporting sleeve 13, a locking bar 12 and a locking block 14; the support sleeve 13 is mounted at the end part of the sleeve rod 11, at least two open slots 131 are formed in the position, which is not connected with the sleeve rod 11, of the support sleeve 13, the open slots 131 are radially arranged along the support sleeve 13, and the locking blocks 14 are mounted in each open slot 131; the locking rod 12 is arranged in the loop bar 11, the end part of the locking rod 12 stretches into the supporting sleeve 13, the part of the locking rod 12 stretching into the supporting sleeve 13 is a first conical surface, and the inner side surface of the locking block 14 is a second conical surface 143 matched with the first conical surface.

Specifically, the loop bar 11 and the supporting sleeve 13 are both revolution bodies, the loop bar 11 and the supporting sleeve 13 are both provided with inner holes, the locking bar 12 is of a columnar structure, external threads are arranged on the outer circle of the locking bar 12, the inner holes of the loop bar 11 are provided with internal threads matched with the external threads of the locking bar 12, the locking bar 12 is connected with the loop bar 11 through threads, and the lower end of the locking bar 12 can extend into the inner holes of the supporting sleeve 13 through the inner holes of the loop bar 11 when in use.

The upper end of the loop bar 11 is provided with a first rotating part for rotating the loop bar 11, and the first rotating part can adopt various modes as long as the loop bar 11 can be driven to rotate so as to detach the wire thread insert 2, and in the embodiment, a standard hexagonal prism structure is adopted, so that the loop bar 11 can conveniently rotate through an open spanner. The end of the locking rod 12 is provided with a second rotating part for rotating the locking rod 12, and the second rotating part can adopt various modes as long as the locking rod 12 can be driven to rotate in the loop rod 11 so as to press the locking block 14 outwards (radially), for example, the locking rod can be a six-edge groove, a straight groove, a cross groove, a plum blossom groove or the like, and in the embodiment, the six-edge groove is adopted.

When the wire thread insert 2 is disassembled, firstly, the locking block 14 is installed in the opening groove 131 of the supporting sleeve 13 through the inner hole of the supporting sleeve 13, then the upper end of the supporting sleeve 13 is installed at the lower end of the sleeve rod 11, the locking block 14 is in a free state, then the disassembling tool 1 is placed into the hole of the wire thread insert 2, the locking rod 12 is rotated to move downwards, the second conical surface 143 of the locking block 14 is extruded by the first conical surface of the locking rod 12, the locking block 14 is enabled to move outwards along the opening groove 131 of the supporting sleeve 13, and then the locking block 14 is enabled to abut against the wire thread insert 2, as shown in fig. 6, and then the sleeve rod 11 is rotated by adopting a spanner or an electric tool, so that the wire thread insert 2 is disassembled. According to the dismounting tool 1 disclosed by the utility model, the outer contour diameter of the locking block 14 is gradually increased through the matching of the first conical surface and the second conical surface 143 so as to lock the steel wire screw sleeve 2, so that the process of axially moving along the steel wire screw sleeve 2 to press the steel wire screw sleeve 2 in the prior art is changed into the process of radially moving through the conical surface matching with the locking block 14 to press the steel wire screw sleeve 2, the using strength is better grasped, the technical requirements on assembly staff are low, and the condition that the steel wire screw sleeve 2 is deformed or even broken due to overlarge strength is reduced.

On the other hand, in the process of disassembling the wire thread insert 2, the situation that the disassembling tool 1 breaks is unavoidable, the existing disassembling tool 1 is easy to clamp in the wire thread insert 2 after breaking and is difficult to take out, after the disassembling tool 1 of the utility model breaks, the locking rod 12 can be taken out firstly, and at the moment, no supporting force in the middle of the locking block 14 can become loose, so that the broken disassembling tool 1 can be taken out easily, and the use is convenient.

The loop bar 11 and the supporting sleeve 13 are detachably connected, the locking block 14 is convenient to replace through the detachable connection, and the loop bar and the supporting sleeve can be reused after being polished. And can change different support sleeve 13 according to the different diameters of wire thread insert 2, increased extracting tool 1's application scope.

Further, the loop bar 11 and the supporting sleeve 13 are connected through threads, and the rotation direction of the threads of the loop bar 11 and the supporting sleeve 13 is opposite to that of the wire thread insert 2 to be detached. For example, the threads of the steel wire thread insert 2 to be disassembled are right-handed, and the threads of the sleeve rod 11 and the supporting sleeve 13 are left-handed; if the threads of the wire thread insert 2 to be disassembled are left-handed, the threads of the sleeve rod 11 and the supporting sleeve 13 are right-handed. By the arrangement that the two positions are oppositely rotated, the problem that when the wire thread insert 2 is disassembled, threads between the sleeve rod 11 and the supporting sleeve 13 are loosened firstly because the wire thread insert 2 is not loosened is prevented.

As shown in fig. 3 and 5, the locking block 14 has a T-shaped structure and includes a large end 142 and a small end 141, the large end 142 of the locking block 14 is disposed in the inner hole of the supporting sleeve 13, and the small end 141 of the locking block 14 is mounted in the open slot 131 of the supporting sleeve 13. The inner side surface of the large end 142 of the locking block 14 is provided with a second conical surface 143, and the second conical surface 143 is extruded by the first conical surface of the locking rod 12, so that the small end 141 of the locking block 14 moves outwards in the open slot 131 to further extrude the locking wire thread insert 2. The width of the large end 142 of the locking block 14 is greater than the width of the open slot 131 of the supporting sleeve 13, and the locking block 14 is limited by the open slot 131, so that the whole locking block 14 is prevented from sliding out of the open slot 131 when the locking block 14 is installed, and the operation convenience is improved.

The outer side surface of the small end 141 of the locking block 14 is an arc surface, so that compared with the existing multi-edge tool knife, the area of the locking block 14 for locking the steel wire threaded sleeve 2 is increased, the stress is more uniform, and particularly for deep hole disassembly, the disassembly tool 1 is more convenient to disassemble.

The number of the open grooves 131 is not particularly limited, and a person skilled in the art may reasonably select according to the size of the wire thread insert 2, for example, 2, 3, 4, etc. In this embodiment, as shown in fig. 3 and 4, four open slots 131 are provided, and the four open slots 131 are arranged in a circumferential array.

As shown in fig. 2, the inner hole of the supporting sleeve 13 is a stepped hole, and is sequentially a threaded hole, a large hole and a small hole from top to bottom, the open slot 131 is formed in the peripheral wall of the corresponding position of the large hole, the diameter of the small hole on the lower side is smaller than that of the large hole, and the problem that the locking block 14 directly falls down from the lower end of the supporting sleeve 13 when the locking block 14 is mounted is avoided through the arrangement of the stepped hole.

While the foregoing description of the embodiments of the present utility model has been presented in conjunction with the drawings, it should be understood that it is not intended to limit the scope of the utility model, but rather, it is intended to cover all modifications or variations within the scope of the utility model as defined by the claims of the present utility model.

Claims (10)

1. The utility model provides a wire thread insert extracting tool which characterized in that includes: the locking device comprises a loop bar, a supporting sleeve, a locking bar and a locking block;

the support sleeve is arranged at the end part of the loop bar, at least two open slots are formed in the position, which is not connected with the loop bar, of the support sleeve, the open slots are radially arranged along the support sleeve, and the locking blocks are arranged in each open slot; the locking rod is arranged in the loop bar, the end part of the locking rod extends into the supporting sleeve, the part of the locking rod extending into the supporting sleeve is a first conical surface, and the inner side surface of the locking block is a second conical surface matched with the first conical surface.

2. The wire thread insert removing tool according to claim 1, wherein the locking rod is in threaded connection with the sleeve rod, an external thread is arranged on the outer circle of the locking rod, and an internal thread matched with the external thread of the locking rod is arranged on the inner hole of the sleeve rod.

3. The wire thread insert removing tool of claim 1, wherein the shank and the support sleeve are detachably connected.

4. A wire thread insert removing tool as claimed in claim 3, wherein the shank and the support sleeve are connected by a screw thread, the screw threads of the shank and the support sleeve having a direction opposite to that of the wire thread insert to be removed.

5. The wire thread insert removing tool of claim 1, wherein the locking block has a T-shaped structure including a large end and a small end, the large end of the locking block is disposed in the inner hole of the support sleeve, and the small end of the locking block is disposed in the open slot of the support sleeve and is movable radially along the open slot.

6. The wire thread insert removing tool of claim 5, wherein the outer side surface of the small end of the locking block is an arc surface.

7. The wire thread insert removing tool of claim 1, wherein four of the open grooves are arranged in a circumferential array.

8. The wire thread insert removing tool as recited in claim 1, wherein the inner hole of the supporting sleeve is a stepped hole comprising a large hole and a small hole, and the open slot is provided on a peripheral wall of a position corresponding to the large hole.

9. The wire thread insert removing tool of claim 1, wherein the end of the sleeve rod is provided with a first rotating portion for rotating the sleeve rod.

10. The wire thread insert removing tool of claim 1, wherein the locking lever end portion is provided with a second rotating portion for rotating the locking lever.