CN114274097A - Tool and method for reversely removing mounting handle from blind hole by using steel wire thread insert with broken groove - Google Patents
Tool and method for reversely removing mounting handle from blind hole by using steel wire thread insert with broken groove Download PDFInfo
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- CN114274097A CN114274097A CN202111551256.8A CN202111551256A CN114274097A CN 114274097 A CN114274097 A CN 114274097A CN 202111551256 A CN202111551256 A CN 202111551256A CN 114274097 A CN114274097 A CN 114274097A
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Abstract
A tool for reversely removing an installation handle from a steel wire thread insert with a broken groove for a blind hole comprises a T-shaped handle (2), a U-shaped nut (4) and a blocking sleeve (3), and is characterized in that an external thread is arranged at the lower end of the T-shaped handle (2); the U-shaped nut (4) is provided with internal threads, and the wall of the U-shaped nut (4) is provided with two symmetrical U-shaped grooves (41); the external thread at the lower end of the T-shaped handle (2) is matched with the internal thread of the U-shaped nut (4); the blocking sleeve (3) is a section of pipe (31), the upper end surface of the pipe (31) is connected with a transverse plate (32), the transverse plate (32) is larger than the upper edge of the pipe (31), a through hole is formed in the middle of the transverse plate (32), and the pipe wall of the lower part of the pipe (31) is provided with a large blind groove (311) and a small blind groove (312); the invention solves the problem that the shallow blind hole can not be provided with the steel wire thread insert.
Description
Technical Field
The invention relates to a tool and a method for reversely removing a mounting handle from a steel wire thread insert with a breaking groove for a blind hole, which are particularly suitable for mounting the steel wire thread insert with the breaking groove on a shallow blind hole.
Background
The steel wire thread insert is a novel fastener, and can form high-precision internal threads by being embedded into internal thread holes made of low-strength engineering materials such as aluminum alloy, magnesium alloy and the like, so that the effects of enhancing the connection strength and improving the connection condition are achieved. However, in the prior art, the installation of the breaking groove steel wire thread insert on the shallow blind hole cannot be realized, a certain space is required for breaking the installation handle of the steel wire thread insert, and the shallow blind hole has no redundant space, so that the steel wire thread insert cannot be installed on the shallow blind hole for a long time.
GJB119.1A, the tail part of the wire thread insert is provided with a breaking groove, after installation, a breaker is used for punching downwards along the installation direction to break the installation handle of the wire thread insert, however, if the threaded hole is a blind hole, the bottom of the blind hole needs to leave enough space for punching the installation handle, and GJB5108-2002 specifies that the drilling depth H of the blind hole is H (thread depth) +4P (thread pitch). However, in industrial production, the blind hole is often shallow due to special reasons such as air tightness and the like, and the blind hole is not allowed to be deepened, if a GJB119.2A specified wire thread insert without a fracture groove is installed, a stud matched with the wire thread insert cannot be completely screwed due to the blocking of an installation handle, so that the connection strength of the fastener is reduced. Therefore, under the condition, the steel wire thread insert with the standard of the breaking groove of GJB119.1A needs to be installed, and the installation handle can only be reversely removed without a space of forward punching due to the fact that the installation bottom hole of the steel wire thread insert is shallow, but the steel wire of the steel wire thread insert with the nominal diameter of more than 8mm is thick, the steel wire thread insert is damaged and cannot be used due to the fact that the installation handle is forcibly and reversely removed, the problems of plastic deformation, tripping and the like of the steel wire thread insert are caused, and therefore how to smoothly and reversely remove the installation handle with the steel wire thread insert with the breaking groove on the premise of not damaging the steel wire thread insert is a troublesome problem.
Disclosure of Invention
The invention provides a tool and a method for reversely removing an installation handle from a steel wire thread insert with a breaking groove for a blind hole, so that the steel wire thread insert with the breaking groove is installed on a shallow blind hole.
A tool for reversely removing an installation handle from a steel wire thread insert with a broken groove for a blind hole comprises a T-shaped handle 2, a U-shaped nut 4 and a blocking sleeve 3, and is characterized in that an external thread is arranged at the lower end of the T-shaped handle 2; the U-shaped nut 4 is provided with internal threads, and two symmetrical U-shaped grooves 41 are formed in the wall of the U-shaped nut 4; the external thread at the lower end of the T-shaped handle 2 is matched with the internal thread of the U-shaped nut 4; the retaining sleeve 3 is a section of pipe 31, the upper end surface of the pipe 31 is connected with a transverse plate 32, the transverse plate 32 is larger than the upper edge of the pipe 31, a through hole is formed in the middle of the transverse plate 32, and the pipe wall of the lower part of the pipe 31 is provided with a large blind groove 311 and a small blind groove 312;
when in use, the two U-shaped grooves 41 of the U-shaped nut 4 are sleeved on the installation handle 11 of the steel wire thread insert 1 with the breaking grooves, and the root of the installation handle 11 is provided with the breaking grooves 111; the lower end of the T-shaped handle 2 penetrates in from a through hole of a transverse plate 32 on the retaining sleeve 3, penetrates out from the other end of the pipe 31, penetrates into the steel wire threaded sleeve 1 with the breaking groove, is in threaded connection with the U-shaped nut 4 on the mounting handle 11, and enables the mounting handle 11 to be clamped in a large blind groove 311 at the lower end of the retaining sleeve 3.
A method for reversely removing a mounting handle from a blind hole by using a steel wire thread insert with a broken groove, which is implemented by using the tool for reversely removing the mounting handle from the steel wire thread insert with the broken groove in any one of the blind holes in claims 1 to 2, comprises the following steps,
the first step is as follows: the U-shaped groove 41 of the U-shaped nut 4 is embedded with the installation handle 11 of the broken groove steel wire thread insert 1;
the second step is that: one end of the external thread of the T-shaped handle 2 penetrates through the blocking sleeve 3 from one side of the blocking sleeve 3 with the transverse plate 32, then is inserted into the inner cavity of the broken groove steel wire thread insert 1 from one side without the mounting handle 11 and is in threaded connection with the U-shaped nut embedded with the broken groove steel wire thread insert 1;
the third step: after the large blind groove 311 of the adjusting blocking sleeve 3 faces one side of the breaking groove 111 of the steel wire thread insert 1 with the breaking groove, the outer circular surface of the blocking sleeve 3 is inserted into the inner cavity of the steel wire thread insert 1 with the breaking groove;
the fourth step: aligning the steel wire threaded sleeve 1 with the breaking groove to the threaded blind hole 5 to be provided with the steel wire threaded sleeve with the breaking groove, holding the steel wire threaded sleeve 1 with hands, and rotating the T-shaped handle 2 clockwise to screw the steel wire threaded sleeve 1 with the breaking groove into the threaded blind hole 5 to be provided with the steel wire threaded sleeve with the breaking groove;
the fifth step: after the action of screwing the steel wire threaded sleeve 1 with the breaking groove into the threaded blind hole 5 to be provided with the steel wire threaded sleeve with the breaking groove is finished, the transverse plate 31 of the retaining sleeve 3 is pressed by the left hand, the T-shaped handle 2 is pulled outwards by the right hand, and the mounting handle 11 of the steel wire threaded sleeve 1 with the breaking groove can be reversely broken.
The invention has the beneficial effects that: the invention solves the problem that the shallow blind hole can not be provided with the steel wire thread insert. The invention is used for mounting the shallow blind hole steel wire thread insert, the mounting handle of the invention which reversely breaks the steel wire thread insert with the breaking groove has simple operation, low cost and repeated use, and the protective action of the blocking sleeve effectively avoids the occurrence of the damage phenomenon of the steel wire thread insert caused by the plastic deformation, tripping and other problems of the steel wire thread insert when the mounting handle is reversely broken.
Drawings
FIG. 1 is a schematic structural view of a steel wire thread insert 1 with a breaking groove;
FIG. 2 is a schematic structural view of the retaining sleeve 3;
FIG. 3 is a schematic structural view of a U-shaped nut 4;
FIG. 4 is an exploded view of a wire thread insert 1 with a break groove for a blind hole and the tool of the present invention;
FIG. 5 is an assembly drawing of a wire thread insert 1 with a break groove for a blind hole and the tool of the present invention;
FIG. 6 is a schematic structural view of a threaded blind hole 5 to be provided with a break groove steel wire thread insert;
FIG. 7 is a schematic view of a method of installing the break groove wire thread insert 1 according to the present invention;
FIG. 8 is a schematic view of the structure of the wire thread insert 1 with the break groove according to the present invention;
wherein, 1 is a steel wire thread insert with a breaking groove; 2 is a T-shaped handle; 3 is a blocking sleeve; 4 is a U-shaped nut; and 5 is a threaded blind hole to be provided with a broken groove steel wire thread insert.
Detailed Description
The utility model provides a blind hole is with instrument that has reverse installation handle of getting rid of broken groove steel wire swivel nut, includes, T type handle 2, U type nut 4 and spacer 3.
The T-shaped handle is made of steel, the hardness of the T-shaped handle is HRC 30-40, the T-shaped handle is T-shaped on the outer portion, the lowest portion of the T-shaped handle is an M3 external thread, then a polished rod with the diameter of 3mm, a conical transition section and a polished rod with the diameter of 5-6 mm are sequentially arranged from bottom to top, and two handles are symmetrically extended out from the uppermost portion of the T-shaped handle for applying torque; the length L of the light rod with the diameter of 3mm is equal to H + 3-5 mm, wherein H is the effective depth of the bottom hole (blind hole) for installing the steel wire thread insert.
The U-shaped nut is made of steel and has the hardness of HRC40-50, the outer part of the U-shaped nut is cylindrical, the middle of the U-shaped nut is provided with a U-shaped blind groove, and the opening end of the U-shaped groove is provided with an M3 threaded blind hole concentric with the excircle; the diameter of the excircle of the U-shaped nut is 4.1-4.3 mm, and the total height H1 of the nut is 5-8 mm; the width of the U-shaped groove is 1.8-2 mm, and the depth H of the U-shaped groove is H1-1-1.2 mm; the depth h1 of the M3 threaded blind hole is h-0.5-0.8 mm.
The baffle sleeve is made of steel, the hardness of the baffle sleeve is HRC40-50, the baffle sleeve is of a cylindrical structure, the upper end of the baffle sleeve is provided with flanges which are symmetrical left and right and long in round shape and are 2mm thick, the center line of the cylinder passes through the center of the flanges, the flanges are perpendicular to the center line of the cylinder, the left side and the right side of the flanges in the X direction are mutually symmetrical vertical surfaces, and the left side and the right side of the flanges in the Y direction are mutually symmetrical arc surfaces; two blind grooves which are 3.5 to 4mm deep and avoid the steel wire thread sleeve mounting handle are formed in the cylinder walls on two sides of the lower end of the retaining sleeve along the Y direction, the two blind grooves are one large and one small and are symmetrical about the YOZ plane (the center line of the cylinder is the Z direction), the width of each small blind groove is 2.5 to 3mm, the section plane of each large blind groove is parallel to the XOZ plane, the distance between each large blind groove and the XOZ plane is 0.5 to 0.7mm, and the lower end face of the retaining sleeve is chamfered C0.5; the outer diameter D1 of the retaining sleeve is equal to the nominal diameter D multiplied by 0.82 of the wire thread insert, and the inner diameter D1 of the retaining sleeve is equal to D1-2 mm; the total height H2 of spacer is H +4 ~ 5mm, and wherein H is the effective degree of depth of steel wire swivel nut installation bottom hole (blind hole).
In the invention, a U-shaped groove of a U-shaped nut is embedded with an installation handle of a broken groove steel wire thread sleeve; the external thread end of the T-shaped handle penetrates through the blocking sleeve (firstly penetrates through the flanging side of the blocking sleeve) and the steel wire thread insert (penetrates through the side without the mounting handle) in sequence and is in threaded connection with the internal thread of the U-shaped nut; and adjusting the large blind groove of the blocking sleeve to face one side of the steel wire thread sleeve breaking groove, and then inserting the outer circular surface of the blocking sleeve into the inner cavity of the steel wire thread sleeve.
The specific implementation technical scheme is as follows:
the first step is as follows: an installation handle of a broken groove steel wire thread sleeve is embedded in a U-shaped groove of the U-shaped nut;
the second step is that: one end of the external thread of the T-shaped handle penetrates through the blocking sleeve from one side of the flanging of the blocking sleeve, then is inserted into the inner cavity of the steel wire thread insert from one side without the mounting handle and is in threaded connection with the U-shaped nut embedded with the broken groove steel wire thread insert;
the third step: after the large blind groove of the blocking sleeve is adjusted to face one side of the steel wire thread sleeve breaking groove, the outer circular surface of the blocking sleeve is inserted into the inner cavity of the steel wire thread sleeve;
the fourth step: aligning the steel wire thread insert with a threaded blind hole of the steel wire thread insert to be installed, holding the steel wire thread insert by hands, and rotating the T-shaped handle clockwise to screw the steel wire thread insert into the threaded blind hole;
the fifth step: after the action of screwing the steel wire thread insert into the threaded blind hole is finished, the flange of the retaining sleeve is pressed by the left hand, and the T-shaped handle is pulled outwards by the right hand, so that the mounting handle with the broken groove steel wire thread insert can be reversely broken.
While the preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings so that the advantages and features of the invention may be more readily understood by those skilled in the art, it is to be noted that the disclosed embodiments are intended to assist in further understanding of the invention and that various alternatives and modifications are possible without departing from the spirit and scope of the invention and appended claims. Therefore, the invention should not be limited to the embodiments disclosed, but the scope of the invention is defined by the appended claims.
The first embodiment is as follows:
fig. 4-5 show a method and a tool for reversely removing a mounting shank by a steel wire thread insert containing a breaking groove for a blind hole, comprising the following steps: t type handle, U type nut, spacer sleeve.
The T-shaped handle is made of steel materials, the hardness of the T-shaped handle is HRC32, the T-shaped handle is T-shaped on the outer portion, the lowest portion of the T-shaped handle is an M3 external thread, then a polished rod with the diameter of 3mm, a conical transition section and a polished rod with the diameter of 5mm are sequentially arranged from bottom to top, and two handles are symmetrically extended out of the upper portion of the T-shaped handle for applying torque; the length L of the light rod with the diameter of 3mm is equal to H +4mm, wherein H is the effective depth of a bottom hole (blind hole) for installing the steel wire thread sleeve;
the U-shaped nut shown in FIG. 3 is made of steel and has the hardness of HRC45, the outer part of the U-shaped nut is cylindrical, the middle of the U-shaped nut is provided with a U-shaped blind groove, and the opening end of the U-shaped groove is provided with an M3 threaded blind hole concentric with the excircle; the diameter of the excircle is 4.3mm, and the total height of the nut is 6 mm; the width of the U-shaped groove is 1.9mm, and the depth of the U-shaped groove is 5 mm; the depth of the M3 threaded blind hole is 4.5 mm.
The baffle sleeve shown in fig. 2 is made of steel, has the hardness of HRC45, and is externally provided with a cylindrical structure, the upper end of the cylindrical structure is provided with flanges which are bilaterally symmetrical and long round and have the thickness of 2mm, the center line of the cylinder passes through the center of the flanges, the flanges are vertical to the center line of the cylinder, the left side and the right side of the flanges in the X direction are mutually symmetrical vertical surfaces, and the left side and the right side of the flanges in the Y direction are mutually symmetrical arc surfaces; two blind grooves which are 3.5mm deep and avoid the steel wire thread sleeve mounting handle are formed in the cylinder walls on two sides of the lower end of the retaining sleeve along the Y direction, the two blind grooves are large and small and are symmetrical about the YOZ plane (the center line of the cylinder is in the Z direction), the width of the small blind groove is 2.5mm, the section plane of the large blind groove is parallel to the XOZ plane, the distance between the section plane of the large blind groove and the XOZ plane is 0.7mm, and the lower end face of the retaining sleeve is chamfered by C0.5; the outer diameter D1 of the retaining sleeve is equal to the nominal diameter D multiplied by 0.82 of the wire thread insert, and the inner diameter D1 of the retaining sleeve is equal to D1-2 mm; the total height H2 of the retaining sleeve is H +4mm, wherein H is the effective depth of the mounting bottom hole (blind hole) of the wire thread insert.
As shown in fig. 5, a mounting handle of a broken groove steel wire thread insert is embedded in a U-shaped groove of the U-shaped nut; the external thread end of the T-shaped handle penetrates through the blocking sleeve (firstly penetrates through the flanging side of the blocking sleeve) and the steel wire thread insert (penetrates through the side without the mounting handle) in sequence and is in threaded connection with the internal thread of the U-shaped nut; and adjusting the large blind groove of the blocking sleeve to face one side of the steel wire thread sleeve breaking groove, and then inserting the outer circular surface of the blocking sleeve into the inner cavity of the steel wire thread sleeve.
As shown in fig. 7 to 8, the wire thread insert is aligned to the threaded blind hole of the wire thread insert to be installed, the wire thread insert is held by hand, and the wire thread insert can be screwed into the threaded blind hole by clockwise rotating the T-shaped handle; after the action of screwing the steel wire thread insert into the threaded blind hole is finished, the flange of the retaining sleeve is pressed by the left hand, and the T-shaped handle is pulled outwards by the right hand, so that the mounting handle with the broken groove steel wire thread insert can be reversely broken.
Claims (2)
1. A tool for reversely removing an installation handle from a steel wire thread insert with a broken groove for a blind hole comprises a T-shaped handle (2), a U-shaped nut (4) and a blocking sleeve (3), and is characterized in that an external thread is arranged at the lower end of the T-shaped handle (2); the U-shaped nut (4) is provided with internal threads, and the wall of the U-shaped nut (4) is provided with two symmetrical U-shaped grooves (41); the external thread at the lower end of the T-shaped handle (2) is matched with the internal thread of the U-shaped nut (4); the blocking sleeve (3) is a section of pipe (31), the upper end surface of the pipe (31) is connected with a transverse plate (32), the transverse plate (32) is larger than the upper edge of the pipe (31), a through hole is formed in the middle of the transverse plate (32), and the pipe wall of the lower part of the pipe (31) is provided with a large blind groove (311) and a small blind groove (312);
when in use, two U-shaped grooves (41) of the U-shaped nut (4) are sleeved on the installation handle (11) of the steel wire thread sleeve (1) with the breaking grooves, and the root of the installation handle (11) is provided with the breaking grooves (111); the lower end of the T-shaped handle (2) penetrates in from a through hole of a transverse plate (32) on the blocking sleeve (3), penetrates out from the other end of the pipe (31), penetrates into a steel wire threaded sleeve (1) with a breaking groove, is in spiral connection with a U-shaped nut (4) on the mounting handle (11), and enables the mounting handle (11) to be clamped in a large blind groove (311) at the lower end of the blocking sleeve (3).
2. A method for reversely removing a mounting handle from a blind hole by using a steel wire thread insert with a broken groove, which is implemented by using the tool for reversely removing the mounting handle from the steel wire thread insert with the broken groove in any one of the blind holes in claims 1 to 2, comprises the following steps,
the first step is as follows: an installation handle (11) of the broken groove steel wire thread insert (1) is embedded in a U-shaped groove (41) of the U-shaped nut (4);
the second step is that: one end of the external thread of the T-shaped handle (2) penetrates through the blocking sleeve (3) from one side of the blocking sleeve (3) with the transverse plate (32), then is inserted into the inner cavity of the broken-groove steel wire thread insert (1) from one side without the mounting handle (11) and is in threaded connection with the U-shaped nut embedded with the broken-groove steel wire thread insert (1);
the third step: after the large blind groove (311) of the blocking sleeve (3) is adjusted to face one side of the breaking groove (111) of the steel wire thread sleeve (1) with the breaking groove, the outer circular surface of the blocking sleeve (3) is inserted into the inner cavity of the steel wire thread sleeve (1) with the breaking groove;
the fourth step: aligning the steel wire threaded sleeve (1) with the breaking groove to a threaded blind hole (5) to be provided with the steel wire threaded sleeve with the breaking groove, holding the steel wire threaded sleeve (1) with hands, and clockwise rotating the T-shaped handle (2) to screw the steel wire threaded sleeve (1) with the breaking groove into the threaded blind hole (5) to be provided with the steel wire threaded sleeve with the breaking groove;
the fifth step: after the steel wire threaded sleeve (1) with the breaking groove is screwed into the threaded blind hole (5) to be provided with the steel wire threaded sleeve with the breaking groove, the transverse plate (31) of the retaining sleeve (3) is pressed by the left hand, the T-shaped handle (2) is pulled outwards by the right hand, and the mounting handle (11) with the steel wire threaded sleeve with the breaking groove (1) can be broken reversely.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551256.8A CN114274097B (en) | 2021-12-17 | 2021-12-17 | Tool and method for reversely removing mounting handle for blind hole by using broken channel steel wire screw sleeve |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111551256.8A CN114274097B (en) | 2021-12-17 | 2021-12-17 | Tool and method for reversely removing mounting handle for blind hole by using broken channel steel wire screw sleeve |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114274097A true CN114274097A (en) | 2022-04-05 |
| CN114274097B CN114274097B (en) | 2023-08-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111551256.8A Active CN114274097B (en) | 2021-12-17 | 2021-12-17 | Tool and method for reversely removing mounting handle for blind hole by using broken channel steel wire screw sleeve |
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| CN (1) | CN114274097B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117381717A (en) * | 2023-09-22 | 2024-01-12 | 中电国基北方有限公司 | Installation component and installation equipment of tailed swivel nut |
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| CN214187022U (en) * | 2021-06-15 | 2021-09-14 | 天津飞悦航空科技股份有限公司 | Combined deep hole internal thread steel wire thread insert mounting and dismounting tool |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117381717A (en) * | 2023-09-22 | 2024-01-12 | 中电国基北方有限公司 | Installation component and installation equipment of tailed swivel nut |
| CN117381717B (en) * | 2023-09-22 | 2024-04-05 | 中电国基北方有限公司 | Installation component and installation equipment of tailed swivel nut |
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| Publication number | Publication date |
|---|---|
| CN114274097B (en) | 2023-08-29 |
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