CN114453616A - Universal hexagonal nut safety hole drilling jig - Google Patents
Universal hexagonal nut safety hole drilling jig Download PDFInfo
- Publication number
- CN114453616A CN114453616A CN202111634618.XA CN202111634618A CN114453616A CN 114453616 A CN114453616 A CN 114453616A CN 202111634618 A CN202111634618 A CN 202111634618A CN 114453616 A CN114453616 A CN 114453616A
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- fixed
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- hexagonal nut
- positioning block
- shaped positioning
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- 238000005553 drilling Methods 0.000 title claims abstract description 18
- 230000006835 compression Effects 0.000 claims description 10
- 238000007906 compression Methods 0.000 claims description 10
- 230000003044 adaptive effect Effects 0.000 abstract description 3
- 238000003754 machining Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000013011 mating Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
- B23B47/28—Drill jigs for workpieces
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Drilling And Boring (AREA)
Abstract
The invention discloses a universal hexagonal nut safety hole drilling jig which comprises a body, a left adjusting component and a right adjusting component; the left adjusting component is connected with a fixed V-shaped positioning block, and the right adjusting component is connected with a movable V-shaped block; a drill guide hole is formed in the fixed V-shaped positioning block along the vertical direction of the fixed V-shaped positioning block; when the fixed V-shaped positioning block and the movable V-shaped block clamp the hexagonal nut, an external drill enters from the drill guide hole and a safety hole is processed on the hexagonal nut. The drill jig provided by the invention has the advantages that the hexagonal nuts are clamped by the fixed V-shaped positioning blocks and the movable V-shaped blocks on the two sides, the drill bit guide holes are formed in the fixed V-shaped positioning blocks, the drill bit enters the specified positions of the hexagonal nuts through the drill bit guide holes after the hexagonal nuts are clamped and positioned, the safety holes are processed, the drill jig is adaptive to the hexagonal nuts of various specifications, the universality is strong, and the safety holes of the hexagonal nuts of different sizes and specifications can be processed by replacing one fixed V-shaped positioning block.
Description
Technical Field
The invention relates to the technical field of aviation process equipment, in particular to a universal hexagonal nut safety hole drilling jig.
Background
In the field of aviation manufacturing, a used hexagonal nut is generally provided with a safety hole, and the safety hole is used for locking the nut so as to prevent the nut from loosening in work and improve the safety factor. However, the quality and efficiency of the machining of the safety vent is always problematic.
In the prior art, a scribing method or a special drill jig is generally adopted for machining a hexagonal nut safety hole. The scribing method is not only low in efficiency, but also often causes the position of the processed safety hole to deviate, thereby causing poor quality; the tool specifications required by the special drilling jig are various, the cost is quite high, and the special drilling jig is not suitable for the production characteristics of various aviation products and small batch.
Therefore, based on the above technical problems, a need exists in the art to develop a universal hexagonal nut safe hole drilling jig.
Disclosure of Invention
The invention aims to provide a hexagonal nut safety hole drilling jig which is novel in structure, convenient to clamp, high in machining efficiency, reliable in quality and universal.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention discloses a universal hexagonal nut safety hole drill jig, which comprises:
a body;
a left adjustment assembly integrated on the left side of the body; and
the right adjusting component is integrated on the right side of the body;
the left adjusting assembly is connected with a fixed V-shaped positioning block, and the right adjusting assembly is connected with a movable V-shaped block;
the space between the fixed V-shaped positioning block and the movable V-shaped block is a clamping space of a hexagonal nut;
the fixed V-shaped positioning block is adjusted in position relative to the movable V-shaped block through the left adjusting assembly, and the movable V-shaped block is adjusted in position relative to the fixed V-shaped positioning block through the right adjusting assembly;
a drill bit guide hole is formed in the fixed V-shaped positioning block along the vertical direction of the fixed V-shaped positioning block;
after the fixed V-shaped positioning block and the movable V-shaped block clamp the hexagonal nut, an external drill enters from the drill guide hole and a safety hole is processed on the hexagonal nut.
Further, the left adjustment assembly includes:
the left mounting plate is welded and fixed on the left side of the body;
the left guide plate is assembled and fixed on the left mounting plate; and
the left supporting plate is arranged on the outer side surface of the left mounting plate;
one end part of the fixed V-shaped positioning block, which is close to the left guide plate, is embedded into the left guide plate;
the left supporting plate is in threaded connection with a compression screw, and the compression screw extends into the left guide plate and is connected with the part of the fixed V-shaped positioning block embedded into the left guide plate so as to drive the fixed V-shaped positioning block to move;
one side of the fixed V-shaped positioning block, which is in contact with the hexagonal nut, is a V-shaped groove, and the drill bit guide hole penetrates through the V-shaped groove.
Further, a wedge-shaped groove is formed in the side face of the part, embedded into the left guide plate, of the fixed V-shaped positioning block;
a set screw is arranged on the left guide plate;
the set screw can be embedded into the wedge-shaped groove to limit the movement of the fixed V-shaped positioning block.
Further, the left support plate and the left guide plate are assembled and fixed through bolts.
Further, the right adjustment assembly includes:
the right mounting plate is welded and fixed on the right side of the body;
the right guide plate is assembled and fixed on the right mounting plate; and
the right supporting plate is arranged on the outer side surface of the right mounting plate;
one end part of the movable V-shaped block close to the right guide plate is embedded into the right guide plate;
the right supporting plate is in threaded connection with a ball head clamping bolt, and the ball head clamping bolt extends into the right guide plate and is connected with a part of the movable V-shaped block embedded into the right guide plate so as to drive the movable V-shaped block to move;
one side of the movable V-shaped block, which is in contact with the hexagonal nut, is provided with a V-shaped groove.
Furthermore, one end of the movable V-shaped block, which is close to the ball head clamping bolt, is provided with a spherical groove;
the ball clamping bolt end has a ball inserted into the spherical groove.
Further, the right supporting plate and the right guide plate are assembled and fixed through bolts.
Further, a bracket is arranged on the rear side of the body, and the body is assembled and fixed with the bracket through a screw;
the support is provided with an ejector rod, and the ejector rod extends towards the rear side surface of the hexagonal nut along the horizontal direction and abuts against the rear side surface of the hexagonal nut to position the hexagonal nut;
the ejector rod is fixedly assembled with the support through a nut.
In the technical scheme, the universal hexagonal nut safety hole drilling jig provided by the invention has the following beneficial effects:
the drill jig provided by the invention has the advantages that the hexagonal nuts are clamped by the fixed V-shaped positioning blocks and the movable V-shaped blocks on the two sides, the drill bit guide holes are formed in the fixed V-shaped positioning blocks, the drill bit enters the specified positions of the hexagonal nuts through the drill bit guide holes after the hexagonal nuts are clamped and positioned, the safety holes are processed, the drill jig is adaptive to the hexagonal nuts of various specifications, the universality is strong, and the safety holes of the hexagonal nuts of different sizes and specifications can be processed by replacing one fixed V-shaped positioning block.
The drill jig is convenient to operate, high in efficiency and suitable for producing various hexagonal nut safety holes in small batches.
Drawings
In order to more clearly illustrate the embodiments of the present application or technical solutions in the prior art, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present invention, and other drawings can be obtained by those skilled in the art according to the drawings.
Fig. 1 is a schematic structural diagram of a general hexagonal nut safe hole drilling jig according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a mating hexagonal nut of a universal hexagonal nut safe hole drilling jig according to an embodiment of the present invention;
FIG. 3 is a front view of a universal hexagonal nut safe hole drilling jig according to an embodiment of the present invention;
fig. 4 is a sectional view taken along line a-a in fig. 3.
Description of reference numerals:
1. a body; 2. a left adjustment assembly; 3. a right adjustment assembly; 4. a hexagonal nut;
201. a left mounting plate; 202. fixing the V-shaped positioning block; 203. a left guide plate; 204. a left support plate; 205. a compression screw; 206. a drill guide hole; 207. a wedge-shaped groove; 208. tightening the screw;
301. a right mounting plate; 302. a movable V-shaped block; 303. a right guide plate; 304. a right support plate; 305. a ball head clamping bolt; 306. a spherical groove; 307. a ball head;
401. a safety hole;
501. a support; 502. a top rod; 503. and a nut.
Detailed Description
In order to make the technical solutions of the present invention better understood, those skilled in the art will now describe the present invention in further detail with reference to the accompanying drawings.
As shown in fig. 1 to 4;
the invention discloses a universal hexagonal nut safety hole drill jig, which comprises:
a body 1;
a left adjusting component 2 integrated on the left side of the body 1; and
a right adjusting component 3 integrated on the right side of the body 1;
the left adjusting component 2 is connected with a fixed V-shaped positioning block 202, and the right adjusting component 3 is connected with a movable V-shaped block 302;
the space between the fixed V-shaped positioning block 202 and the movable V-shaped block 302 is a clamping space of the hexagonal nut 4;
the fixed V-shaped positioning block 202 is adjusted relative to the position of the movable V-shaped block 302 through the left adjusting assembly 2, and the movable V-shaped block 302 is adjusted relative to the fixed V-shaped positioning block 202 through the right adjusting assembly 3;
a drill guiding hole 206 is formed in the fixed V-shaped positioning block 202 along the vertical direction;
when the hexagonal nut 4 is clamped by the fixed V-shaped positioning block 202 and the movable V-shaped block 302, an external drill enters from the drill guiding hole 206 and a safety hole 401 is machined in the hexagonal nut 4.
Specifically, the embodiment discloses a jig suitable for processing a safety hole 401 of a hexagonal nut 4, which comprises a body 1, a fixed V-shaped positioning block 202 with a position adjusted by a left adjusting assembly 2, and a movable V-shaped block 302 with a position adjusted by a right adjusting assembly 3, wherein the hexagonal nut 4 is clamped by the fixed V-shaped positioning block 202 and the movable V-shaped block 302, a drill bit guide hole 206 is preset on the fixed V-shaped positioning block 202, and after the drill bit is clamped and fixed and a drilling position is determined, the drill bit enters from the drill bit guide hole 206 and drills the safety hole 401 at a designated position of the hexagonal nut 4.
Preferably, the left adjustment assembly 2 of the present embodiment includes:
a left mounting plate 201 fixed to the left side of the body 1 by welding;
a left guide plate 203 assembled and fixed on the left mounting plate 201; and
a left support plate 204 mounted on the outer side surface of the left mounting plate 201;
one end part of the fixed V-shaped positioning block 202 close to the left guide plate 203 is embedded into the left guide plate 203;
the left supporting plate 204 is in threaded connection with a compression screw 205, and the compression screw 205 extends into the left guide plate 203 and is connected with the part of the fixed V-shaped positioning block 202 embedded into the left guide plate 203 so as to drive the fixed V-shaped positioning block 202 to move;
one side of the fixed V-shaped positioning block 202, which is in contact with the hexagonal nut 4, is a V-shaped groove, and the drill guide hole 206 penetrates through the V-shaped groove.
Firstly, the structure of the left adjusting assembly 2 is further limited in this embodiment, a left guide plate 203 is fixed on the left mounting plate 201 in a screw and pin manner, the left mounting plate 201 is directly welded and fixed on the body 1, and a left support plate 204 is installed on the outer side surface, in order to facilitate the position adjustment of the fixed V-shaped positioning block 202, a compression screw 205 is connected with a thread, the compression screw 205 is connected with the left support plate 204 in a thread manner so as to facilitate the adjustment of the embedded length, so that the fixed V-shaped positioning block 202 is driven to move to adjust the position through the connection with the fixed V-shaped positioning block 202.
Secondly, in order to realize the positioning and fixing after the position of the fixed V-shaped positioning block 202 is adjusted, a wedge-shaped groove 207 is formed on the side surface of the part of the fixed V-shaped positioning block 202 embedded in the left guide plate 203;
the left guide plate 203 is provided with a set screw 208;
set screw 208 can be inserted into wedge groove 207 to limit the movement of fixed V-shaped locating block 202.
After the position of the fixed V-shaped positioning block 202 is adjusted by the compression screw 205, the set screw 208 is screwed in, and the positioning is realized by the cooperation of the set screw 208 and the wedge-shaped groove 207 on the side surface of the fixed V-shaped positioning block 202.
The left support plate 201 and the left guide plate 203 are assembled and fixed by bolts.
Preferably, the right adjustment assembly 3 of the present embodiment includes:
a right mounting plate 301 welded and fixed on the right side of the body 1;
a right guide plate 303 assembled and fixed on the right mounting plate 301; and
a right support plate 304 mounted on the outer side surface of the right mounting plate 301;
one end part of the movable V-shaped block 302 close to the right guide plate 303 is embedded in the right guide plate 303;
a ball clamping bolt 305 is connected with the right supporting plate 304 in a threaded manner, and the ball clamping bolt 305 extends into the right guide plate 303 and is connected with the part of the movable V-shaped block 302 embedded into the right guide plate 303 so as to drive the movable V-shaped block 302 to move;
one side of the movable V-shaped block 302, which is contacted with the hexagonal nut 4, is a V-shaped groove.
Wherein, one end of the movable V-shaped block 302 close to the ball-head clamping bolt 305 is provided with a spherical groove 306;
the end of the ball clamp bolt 305 has a ball 307 that fits into a spherical groove 306.
Here, the structure of the right adjustment assembly 3 is defined in detail, which is similar to that of the left adjustment assembly 2, except that a ball clamping bolt 305 is installed on the right support plate 304, and a ball 307 is inserted into a spherical groove 306 at the end of the movable V-block 302 to achieve connection with the movable V-block 302.
Preferably, the right supporting plate 304 and the right guide plate 303 are assembled and fixed by bolts.
Further, the method comprises the following steps:
the body 1 of the embodiment has a bracket 501 at the rear side, and the body 1 is assembled and fixed with the bracket 501 through screws;
a push rod 502 is mounted on the bracket 501, and the push rod 502 extends towards the rear side surface of the hexagonal nut 4 along the horizontal direction and abuts against the rear side surface of the hexagonal nut 4;
the top rod 502 is assembled and fixed with the bracket 501 through a nut 503.
The fixed V-shaped positioning block 202 and the movable V-shaped block 302 are used for clamping and fixing the hexagonal nut 4, the rear side surface of the hexagonal nut 4 is positioned by the ejector rod 502 connected with the bracket 501, the ejector rod horizontally extends at the rear side of the hexagonal nut 4 and abuts against the rear side surface of the hexagonal nut 4, and after the position is determined, the nut 503 is used for fixedly connecting the position.
The device of the embodiment can determine the positioning size n by adjusting the front and rear positions of the push rod through threads, the position of the push rod determines the rear fastening nut 503, the diameter and the position size m of the drill guide hole 206 of the fixed V-shaped positioning block 202 need to be determined according to the parameters of the safety holes 401 of different hexagonal nuts 4, when the safety holes 401 of hexagonal nuts 4 with different sizes and specifications are machined, the sizes d and m of the fixed V-shaped positioning block 202 are changed and used, and the safety holes 401 of hexagonal nuts 4 with different specifications can be universal.
In the technical scheme, the universal hexagonal nut safety hole drilling jig provided by the invention has the following beneficial effects:
according to the drill jig, the hexagonal nut 4 is clamped through the fixed V-shaped positioning blocks 202 and the movable V-shaped blocks 302 on the two sides, the drill bit guide holes 206 are formed in the fixed V-shaped positioning blocks 202, after the hexagonal nut 4 is clamped and positioned, a drill bit enters the specified positions of the hexagonal nut 4 through the drill bit guide holes 206 to be machined to form the safety holes 401, the drill jig is adaptive to the hexagonal nuts 4 of various specifications, the universality is high, and the machining of the safety holes 401 of the hexagonal nuts 4 of different sizes and specifications can be realized by replacing one fixed V-shaped positioning block 202.
The drill jig is convenient to operate and high in efficiency, and is suitable for producing the safety holes 401 of the small-batch and various hexagonal nuts 4.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that the described embodiments may be modified in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are illustrative in nature and should not be construed as limiting the scope of the invention.
Claims (8)
1. The utility model provides a general hexagonal nut insurance hole jig which characterized in that, this jig includes:
a body (1);
a left adjustment assembly (2) integrated on the left side of the body (1); and
a right adjusting component (3) integrated on the right side of the body (1);
the left adjusting assembly (2) is connected with a fixed V-shaped positioning block (202), and the right adjusting assembly (3) is connected with a movable V-shaped block (302);
the space between the fixed V-shaped positioning block (202) and the movable V-shaped block (302) is a clamping space of a hexagonal nut (4);
the fixed V-shaped positioning block (202) is adjusted in position relative to the movable V-shaped block (302) by the left adjusting assembly (2), and the movable V-shaped block (302) is adjusted in position relative to the fixed V-shaped positioning block (202) by the right adjusting assembly (3);
a drill guide hole (206) is formed in the fixed V-shaped positioning block (202) along the vertical direction;
when the hexagonal nut (4) is clamped by the fixed V-shaped positioning block (202) and the movable V-shaped block (302), an external drill enters from the drill guide hole (206) and a safety hole (401) is machined in the hexagonal nut (4).
2. A universal hexagonal nut safe hole drilling jig according to claim 1, characterized in that the left adjustment assembly (2) comprises:
a left mounting plate (201) welded and fixed on the left side of the body (1);
a left guide plate (203) assembled and fixed on the left mounting plate (201); and
a left support plate (204) mounted on the outer side surface of the left mounting plate (201);
one end part of the fixed V-shaped positioning block (202) close to the left guide plate (203) is embedded into the left guide plate (203);
a compression screw (205) is connected to the left supporting plate (204) in a threaded manner, the compression screw (205) extends into the left guide plate (203) and is connected with a part of the fixed V-shaped positioning block (202) embedded into the left guide plate (203) to drive the fixed V-shaped positioning block (202) to move;
one side of the fixed V-shaped positioning block (202), which is in contact with the hexagonal nut (4), is a V-shaped groove, and the drill guide hole (206) penetrates through the V-shaped groove.
3. The universal hexagonal nut safety hole drill jig as claimed in claim 2, characterized in that a wedge-shaped groove (207) is formed in the side surface of the part of the fixed V-shaped positioning block (202) embedded in the left guide plate (203);
a set screw (208) is arranged on the left guide plate (203);
the set screw (208) can be embedded into the wedge-shaped groove (207) to limit the movement of the fixed V-shaped positioning block (202).
4. A universal hexagonal nut safety hole jig according to claim 2, characterized in that the left support plate (204) and the left guide plate (203) are fixed by bolt assembly.
5. A universal hexagonal nut-fuse hole-drilling jig according to claim 2, characterized in that the right adjustment assembly (3) comprises:
a right mounting plate (301) welded and fixed on the right side of the body (1);
a right guide plate (303) assembled and fixed on the right mounting plate (301); and
a right support plate (304) mounted on the outer side surface of the right mounting plate (301);
one end part of the movable V-shaped block (302) close to the right guide plate (303) is embedded into the right guide plate (303);
the right supporting plate (304) is in threaded connection with a ball clamping bolt (305), and the ball clamping bolt (305) extends into the right guide plate (303) and is connected with the part of the movable V-shaped block (302) embedded into the right guide plate (303) to drive the movable V-shaped block (302) to move;
one side of the movable V-shaped block (302) in contact with the hexagonal nut (4) is a V-shaped groove.
6. The universal hexagonal nut safety hole drill jig according to claim 5, characterized in that the movable V-shaped block (302) is provided with a spherical groove (306) near one end of the ball clamping bolt (305);
the ball clamping bolt (305) has a ball (307) at its end that fits into the ball socket (306).
7. A universal hexagonal nut safe hole drilling jig according to claim 5, characterized in that, the right support plate (304) and the right guide plate (303) are fixed by bolt assembly.
8. A universal hexagonal nut safe hole drilling jig according to any one of claims 1 to 7, characterized in that, the back side of the body (1) is provided with a bracket (501), the body (1) is fixed with the bracket (501) by assembling with screws;
a push rod (502) is mounted on the support (501), the push rod (502) extends towards the rear side face of the hexagonal nut (4) along the horizontal direction and abuts against the rear side face of the hexagonal nut (4) to position the hexagonal nut;
the ejector rod (502) is fixedly assembled with the support (501) through a nut (503).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111634618.XA CN114453616A (en) | 2021-12-29 | 2021-12-29 | Universal hexagonal nut safety hole drilling jig |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111634618.XA CN114453616A (en) | 2021-12-29 | 2021-12-29 | Universal hexagonal nut safety hole drilling jig |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN114453616A true CN114453616A (en) | 2022-05-10 |
Family
ID=81406840
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111634618.XA Pending CN114453616A (en) | 2021-12-29 | 2021-12-29 | Universal hexagonal nut safety hole drilling jig |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114453616A (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB748359A (en) * | 1953-06-22 | 1956-05-02 | Brierley Zachry | Improvements in or relating to drilling jigs |
| CN202037357U (en) * | 2011-04-27 | 2011-11-16 | 河南航天精工制造有限公司 | Inclined surface drilling tooling |
| CN205650852U (en) * | 2016-05-16 | 2016-10-19 | 贵州航太精密制造有限公司 | Hexagon inclined plane drilling equipment |
| CN208163115U (en) * | 2017-12-18 | 2018-11-30 | 河南航天精工制造有限公司 | A kind of pipe fitting boring grab |
| CN109333110A (en) * | 2018-11-30 | 2019-02-15 | 中国航空工业标准件制造有限责任公司 | Six square bolt head drilling on inclined surface fixtures |
| CN110293249A (en) * | 2019-08-07 | 2019-10-01 | 沈阳飞机工业（集团）有限公司 | A kind of quadrangle or hex nut general-purpose fuse drilling jig |
| CN211360730U (en) * | 2019-11-25 | 2020-08-28 | 西安卓锐航空科技有限公司 | Hexagonal nut fuse hole punching tool |
-
2021
- 2021-12-29 CN CN202111634618.XA patent/CN114453616A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB748359A (en) * | 1953-06-22 | 1956-05-02 | Brierley Zachry | Improvements in or relating to drilling jigs |
| CN202037357U (en) * | 2011-04-27 | 2011-11-16 | 河南航天精工制造有限公司 | Inclined surface drilling tooling |
| CN205650852U (en) * | 2016-05-16 | 2016-10-19 | 贵州航太精密制造有限公司 | Hexagon inclined plane drilling equipment |
| CN208163115U (en) * | 2017-12-18 | 2018-11-30 | 河南航天精工制造有限公司 | A kind of pipe fitting boring grab |
| CN109333110A (en) * | 2018-11-30 | 2019-02-15 | 中国航空工业标准件制造有限责任公司 | Six square bolt head drilling on inclined surface fixtures |
| CN110293249A (en) * | 2019-08-07 | 2019-10-01 | 沈阳飞机工业（集团）有限公司 | A kind of quadrangle or hex nut general-purpose fuse drilling jig |
| CN211360730U (en) * | 2019-11-25 | 2020-08-28 | 西安卓锐航空科技有限公司 | Hexagonal nut fuse hole punching tool |
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Application publication date: 20220510 |
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