CN113523457A - Reusable threaded hole repair tool and use method - Google Patents
Reusable threaded hole repair tool and use method Download PDFInfo
- Publication number
- CN113523457A CN113523457A CN202110793871.3A CN202110793871A CN113523457A CN 113523457 A CN113523457 A CN 113523457A CN 202110793871 A CN202110793871 A CN 202110793871A CN 113523457 A CN113523457 A CN 113523457A
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- CN
- China
- Prior art keywords
- threaded hole
- tool
- outer sleeve
- hole
- sleeve
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 16
- 238000003466 welding Methods 0.000 claims abstract description 22
- 238000010079 rubber tapping Methods 0.000 claims description 14
- 238000005498 polishing Methods 0.000 claims description 6
- 238000002360 preparation method Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 4
- 238000010586 diagram Methods 0.000 description 5
- 229910000831 Steel Inorganic materials 0.000 description 4
- 239000010959 steel Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G9/00—Working screws, bolt heads, or nuts in conjunction with thread cutting, e.g. slotting screw heads or shanks, removing burrs from screw heads or shanks; Finishing, e.g. polishing, any screw-thread
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/16—Thread cutting; Automatic machines specially designed therefor in holes of workpieces by taps
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23G—THREAD CUTTING; WORKING OF SCREWS, BOLT HEADS, OR NUTS, IN CONJUNCTION THEREWITH
- B23G1/00—Thread cutting; Automatic machines specially designed therefor
- B23G1/44—Equipment or accessories specially designed for machines or devices for thread cutting
Abstract
The invention provides a reusable threaded hole repair tool and a using method thereof. The method can be used for repairing the damaged threaded hole, can reserve the base material of the workpiece to the greatest extent, reduce the repair welding area and reduce the repair cost.
Description
Technical Field
The invention belongs to the technical field of threaded hole repair, and particularly relates to a reusable threaded hole repair tool and a using method thereof.
Background
The condition that the threaded hole on the workpiece is damaged can occur in the production and processing or the using process, and the repair treatment is needed. There are roughly three common repair solutions available today:
firstly, the method for inlaying the steel wire thread bush expands the damaged threaded hole to the steel wire thread bush hole, and then the proper steel wire thread bush is inlaid, the method is low in repair cost and high in operability, but the steel wire thread bush with proper specification and length and the corresponding tool are required, otherwise, the purchase period is a great problem.
Secondly, the plugging method is characterized in that a damaged threaded hole is enlarged and then is plugged into the plug, the end face of the plug is subjected to surfacing and polishing, and then the threaded hole is machined again.
And thirdly, the repair welding method is simple and direct, removes the thread part of the damaged threaded hole, fills and levels up the thread part, and then re-processes the thread part.
Disclosure of Invention
The invention aims to provide a reusable threaded hole repair tool and a use method thereof, which can be used for repairing damaged threaded holes, can reserve workpiece base materials to the maximum extent, reduce repair welding areas and reduce repair cost.
In order to achieve the technical features, the invention is realized as follows: the utility model provides a repeatedly usable's screw hole reprocesses frock, it includes the frock overcoat, the central processing of frock overcoat has overcoat central screw hole, the frock endotheca is installed through the threaded connection cooperation in the overcoat central screw hole of frock overcoat, the central processing of frock endotheca has endotheca central screw hole.
When the tool sleeve is used, the tool sleeve is fixed on the top end face of a to-be-repaired threaded hole of a workpiece through spot welding, and the central threaded hole of the tool sleeve and the to-be-repaired threaded hole are arranged concentrically.
And the nominal diameter MB of the central threaded hole of the outer sleeve is larger than the nominal diameter MA of the threaded hole to be repaired.
The utility model discloses a frock, including frock endotheca, frock overcoat matched with one end processing has the external screw thread section, the end processing of external screw thread section has the annular groove, the top of frock endotheca is provided with the support ring.
The height B of the external thread section is smaller than the thickness H of the tool outer sleeve.
And the nominal diameter of the central threaded hole of the inner sleeve is equal to that of the threaded hole to be repaired.
The nominal diameter of the external thread section is equal to the diameter of the central threaded hole of the outer sleeve.
Also comprises a tap for tapping.
A use method for carrying out threaded hole repair on a reusable threaded hole repair tool comprises the following steps:
step one, positioning and installing a tool outer sleeve:
screwing the tool inner sleeve and the tool outer sleeve;
simultaneously screwing a screw tap into the undamaged area of the central threaded hole of the inner sleeve of the tool inner sleeve and the threaded hole to be repaired by at least 2-3 threads, and ensuring that two threaded holes are on the same spiral line;
fitting the end face of the tool outer sleeve with the end face of the workpiece;
spot welding three points at the excircle of the tool outer sleeve, and fixing the tool outer sleeve on a workpiece;
step two, expanding the damaged threaded area of the threaded hole to be repaired:
after the outer fixture sleeve is fixed, the screw tap is taken down, and then the inner fixture sleeve is taken down;
the damaged thread area is enlarged by polishing through a machine tool or a bench worker, the enlarged size is larger than the nominal size of the threaded hole to be repaired, and then a hole expanding area is formed
Step three, processing the hole expanding area of the damaged thread area:
overlaying welding is carried out on the hole-expanding area, and an overlaying welding area is formed;
loading the tool, sleeving an outer circle of the tool by using a dial indicator, and determining the center of a threaded hole to be repaired;
boring the build-up welding area to the size of a bottom hole of the threaded hole to be repaired by using a boring cutter, and chamfering the orifice of the threaded hole;
step four, tapping the threaded hole to be repaired again:
screwing the inner tool sleeve into the outer tool sleeve again and screwing the inner tool sleeve tightly;
tapping a workpiece threaded hole by a tap by taking an inner sleeve central threaded hole of the tool inner sleeve as a guide hole;
step five, dismantling the tool outer sleeve:
and after the re-tapping preparation is finished, polishing to remove welding spots of the outer tool sleeve, and taking down the tool sleeve and the screw tap.
The invention has the following beneficial effects:
1. the tool can be used for repairing damaged threaded holes, can reserve the base material of the workpiece to the greatest extent, reduces repair welding areas and reduces repair cost.
2. The tool outer sleeve can be used for reliably fixing and installing the tool inner sleeve.
3. By adopting the size relation, the follow-up processing of the threaded hole to be repaired can be conveniently carried out.
4. The tool inner sleeve with the structure can be used for positioning the screw tap, so that subsequent tapping repair is facilitated.
5. By adopting the thickness, the structural strength and the supporting stability of the support are ensured.
6. The tool inner sleeve can be reliably and fixedly mounted on the tool outer sleeve through the size relation.
Drawings
The invention is further illustrated by the following figures and examples.
Fig. 1 is a structural view of the overall arrangement and installation of the tool of the invention.
Fig. 2 is a structural view of a threaded hole to be repaired in accordance with the present invention.
Fig. 3 is a structural diagram of a tool jacket of the invention.
Fig. 4 is a structural diagram of the inner sleeve of the tooling of the invention.
FIG. 5 is a schematic diagram of a first step in a particular use of the present invention.
FIG. 6 is a schematic diagram of a second step in a specific use of the present invention.
FIG. 7 is a third schematic diagram of a specific use of the present invention.
FIG. 8 is a fourth step of the process of the present invention.
In the figure: the device comprises a workpiece 1, a threaded hole 2 to be repaired, a damaged threaded area 3, a tool outer sleeve 4, an outer sleeve central threaded hole 5, an outer threaded section 6, a support ring 7, an annular groove 8, a tool inner sleeve 9, an inner sleeve central threaded hole 10, a screw tap 11, a hole expanding area 12 and a surfacing welding area 13.
Detailed Description
Embodiments of the present invention will be further described with reference to the accompanying drawings.
Example 1:
referring to fig. 1-4, a reusable threaded hole repair tool comprises a tool outer sleeve 4, wherein an outer sleeve central threaded hole 5 is machined in the center of the tool outer sleeve 4, a tool inner sleeve 9 is installed inside the outer sleeve central threaded hole 5 of the tool outer sleeve 4 in a threaded connection and matching mode, and an inner sleeve central threaded hole 10 is machined in the center of the tool inner sleeve 9. The tool can be used for repairing damaged threaded holes, can reserve the base material of the workpiece to the greatest extent, reduces repair welding areas and reduces repair cost.
Further, during the use, frock overcoat 4 is fixed at the top end face of the threaded hole 2 that treats of work piece 1 through spot welding welded connection to guarantee overcoat central screw hole 5 and treat that repair threaded hole 2 arranges with one heart. The tool outer sleeve 4 can be used for reliably fixing and installing the tool inner sleeve 9.
Furthermore, the nominal diameter MB of the central threaded hole 5 of the outer sleeve is larger than the nominal diameter MA of the threaded hole 2 to be repaired. By adopting the size relation, the follow-up processing of the threaded hole 2 to be repaired is ensured to be convenient.
Further, the outer thread section 6 is processed to the one end that the frock endotheca 9 matches with the frock overcoat 4, outer thread section 6, the end processing of outer thread section 6 has annular groove 8, the top of frock endotheca 9 is provided with support ring 7. The tool inner sleeve 9 with the structure can be used for positioning the screw tap 11, so that subsequent tapping repair is facilitated.
Further, the height B of the external thread section 6 is smaller than the thickness H of the tool outer sleeve 4. By adopting the thickness, the structural strength and the supporting stability of the support are ensured.
Further, the nominal diameter of the threaded hole 10 in the center of the inner sleeve is equal to the nominal diameter of the threaded hole 2 to be repaired. The dimensional fit ensures a reliable guidance of the thread cone 11.
Further, the nominal diameter of the external thread section 6 is equal to the diameter of the central threaded hole 5 of the outer sleeve. The tool inner sleeve 9 can be reliably and fixedly arranged on the tool outer sleeve 4 through the dimensional relation.
Further, a tap 11 for tapping is included. The tap 11 can be used to finally tap the threaded hole to be repaired.
Example 2:
referring to fig. 5-8, a method for using a reusable threaded hole repair tool for repairing a threaded hole comprises the following steps:
step one, positioning and installing a tool outer sleeve 4:
screwing the tool inner sleeve 9 and the tool outer sleeve 4 tightly;
simultaneously screwing a screw tap 11 into the central threaded hole 10 of the inner sleeve of the tool inner sleeve 9 and the undamaged area of the threaded hole 2 to be repaired by at least 2-3 threads, and ensuring that two threaded holes are on the same spiral line;
attaching the end surface of the tool outer sleeve 4 to the end surface of the workpiece 1;
three points are spot-welded at the excircle of the tool outer sleeve 4, and the tool outer sleeve 4 is fixed on the workpiece 1;
step two, expanding the damaged threaded area 3 of the threaded hole 2 to be repaired:
after the outer tool sleeve 4 is fixed, the screw tap 11 is taken down, and then the inner tool sleeve 9 is taken down;
the damaged thread area 3 is enlarged by grinding by a machine tool or a bench worker, the enlarged size is larger than the nominal size of the threaded hole 2 to be repaired, and then an expanded hole area 12 is formed
Step three, processing the hole expanding area 12 of the damaged thread area 3:
overlaying welding is carried out on the hole expanding area 12, and an overlaying welding area 13 is formed;
mounting on a machine tool, and fixing the center of the threaded hole 2 to be repaired by using a dial indicator to press the outer circle of the tool sleeve 4;
boring the build-up welding area 13 to the size of a bottom hole of the threaded hole 2 to be repaired by using a boring cutter, and chamfering the hole opening of the threaded hole;
step four, tapping the threaded hole 2 to be repaired again:
screwing the tool inner sleeve 9 into the tool outer sleeve 4 again and screwing down;
taking an inner sleeve central threaded hole 10 of a tool inner sleeve 9 as a guide hole, and tapping a workpiece threaded hole by a screw tap 11;
step five, dismantling the tool jacket 4:
and after the re-tapping preparation is finished, polishing to remove welding points of the outer tooling sleeve 4, and taking down the tooling sleeve 4 and the screw tap 11.
Claims (9)
1. The utility model provides a frock is reprocessed to repeatedly usable's screw hole which characterized in that: the tooling comprises a tooling outer sleeve (4), an outer sleeve central threaded hole (5) is machined in the center of the tooling outer sleeve (4), a tooling inner sleeve (9) is installed inside the outer sleeve central threaded hole (5) of the tooling outer sleeve (4) in a matched mode through threaded connection, and an inner sleeve central threaded hole (10) is machined in the center of the tooling inner sleeve (9).
2. The reusable threaded hole repairing tool according to claim 1, characterized in that: during the use, frock overcoat (4) are fixed in the top terminal surface of waiting to restore screw hole (2) of work piece (1) through spot welding welded connection to guarantee overcoat central screw hole (5) and wait to restore screw hole (2) and arrange with one heart.
3. The reusable threaded hole repairing tool according to claim 1, characterized in that: and the nominal diameter MB of the central threaded hole (5) of the outer sleeve is larger than the nominal diameter MA of the threaded hole (2) to be repaired.
4. The reusable threaded hole repairing tool according to claim 1, characterized in that: the tool inner sleeve (9) and one end of the tool outer sleeve (4) are processed to form an external thread section (6), the tail end of the external thread section (6) is processed to form an annular groove (8), and a support ring (7) is arranged at the top of the tool inner sleeve (9).
5. The reusable threaded hole repairing tool according to claim 1, characterized in that: the height B of the external thread section (6) is smaller than the thickness H of the tool outer sleeve (4).
6. The reusable threaded hole repairing tool according to claim 1, characterized in that: the nominal diameter of the central threaded hole (10) of the inner sleeve is equal to the nominal diameter of the threaded hole (2) to be repaired.
7. The reusable threaded hole repairing tool according to claim 4, characterized in that: the nominal diameter of the external thread section (6) is equal to the diameter of the central threaded hole (5) of the outer sleeve.
8. The reusable threaded hole repairing tool according to claim 1, characterized in that: also comprises a tap (11) for tapping.
9. The use method of the reusable threaded hole repair tool according to any one of claims 1 to 8 for repairing the threaded hole is characterized by comprising the following steps:
step one, positioning and installing a tool outer sleeve (4):
screwing the tool inner sleeve (9) and the tool outer sleeve (4) tightly;
simultaneously screwing a screw tap (11) into an inner sleeve central threaded hole (10) of the inner sleeve (9) of the tool and an undamaged area of a threaded hole (2) to be repaired by at least 2-3 threads, and ensuring that two threaded holes are on a spiral line;
attaching the end face of the tooling outer sleeve (4) to the end face of the workpiece (1);
three points are spot-welded at the excircle of the tool outer sleeve (4), and the tool outer sleeve (4) is fixed on the workpiece (1);
step two, expanding the damaged thread area (3) of the threaded hole (2) to be repaired:
after the tool outer sleeve (4) is fixed, the screw tap (11) is taken down, and then the tool inner sleeve (9) is taken down;
the damaged thread area (3) is enlarged by polishing by a machine tool or a bench worker, the enlarged size is larger than the nominal size of the threaded hole (2) to be repaired, and then an expanded hole area (12) is formed
Step three, processing the hole-widening area (12) of the damaged thread area (3):
overlaying welding is carried out on the hole expanding area (12), and an overlaying welding area (13) is formed;
the machine tool is loaded, and the center of the threaded hole (2) to be repaired is determined by using a dial indicator to press the outer circle of the tool outer sleeve (4);
boring the build-up welding area (13) to the size of a bottom hole of the threaded hole (2) to be repaired by using a boring cutter, and chamfering the hole opening of the threaded hole;
step four, tapping the threaded hole (2) to be repaired again:
screwing the tool inner sleeve (9) into the tool outer sleeve (4) again and screwing tightly;
taking an inner sleeve central threaded hole (10) of a tool inner sleeve (9) as a guide hole, and tapping a workpiece threaded hole by a screw tap (11);
step five, dismantling the tool jacket (4):
and after the re-tapping preparation is completed, polishing to remove welding points of the outer tooling sleeve (4), and taking down the tooling sleeve (4) and the screw tap (11).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110793871.3A CN113523457A (en) | 2021-07-13 | 2021-07-13 | Reusable threaded hole repair tool and use method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110793871.3A CN113523457A (en) | 2021-07-13 | 2021-07-13 | Reusable threaded hole repair tool and use method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113523457A true CN113523457A (en) | 2021-10-22 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110793871.3A Pending CN113523457A (en) | 2021-07-13 | 2021-07-13 | Reusable threaded hole repair tool and use method |
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| Country | Link |
|---|---|
| CN (1) | CN113523457A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2654777A (en) * | 1976-06-29 | 1979-01-04 | Rothenberger Australia Pty. Ltd. | Valve seat for watertaps |
| CN207914728U (en) * | 2018-01-24 | 2018-09-28 | 山东联友石化工程有限公司 | A kind of wire rod thread reparation making guider |
| CN108907374A (en) * | 2018-08-10 | 2018-11-30 | 常州博瑞电力自动化设备有限公司 | A kind of through hole whorl restorative procedure |
| CN112236261A (en) * | 2018-10-17 | 2021-01-15 | 列奥纳多股份公司 | Method and tool for repairing damaged threads |
| CN215846701U (en) * | 2021-07-13 | 2022-02-18 | 宜昌船舶柴油机有限公司 | Repeatedly usable's screw hole reprocesses frock |
-
2021
- 2021-07-13 CN CN202110793871.3A patent/CN113523457A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| AU2654777A (en) * | 1976-06-29 | 1979-01-04 | Rothenberger Australia Pty. Ltd. | Valve seat for watertaps |
| CN207914728U (en) * | 2018-01-24 | 2018-09-28 | 山东联友石化工程有限公司 | A kind of wire rod thread reparation making guider |
| CN108907374A (en) * | 2018-08-10 | 2018-11-30 | 常州博瑞电力自动化设备有限公司 | A kind of through hole whorl restorative procedure |
| CN112236261A (en) * | 2018-10-17 | 2021-01-15 | 列奥纳多股份公司 | Method and tool for repairing damaged threads |
| CN215846701U (en) * | 2021-07-13 | 2022-02-18 | 宜昌船舶柴油机有限公司 | Repeatedly usable's screw hole reprocesses frock |
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