CN115451779B - Tool for checking concave-convex amount of special rivet - Google Patents
Tool for checking concave-convex amount of special rivet Download PDFInfo
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- CN115451779B CN115451779B CN202211243446.8A CN202211243446A CN115451779B CN 115451779 B CN115451779 B CN 115451779B CN 202211243446 A CN202211243446 A CN 202211243446A CN 115451779 B CN115451779 B CN 115451779B
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- 239000011521 glass Substances 0.000 claims description 17
- 238000005259 measurement Methods 0.000 claims description 9
- 239000000523 sample Substances 0.000 claims description 7
- 238000000034 method Methods 0.000 claims description 6
- 241000276425 Xiphophorus maculatus Species 0.000 claims description 4
- 229910000851 Alloy steel Inorganic materials 0.000 claims description 3
- 238000006243 chemical reaction Methods 0.000 claims description 3
- 238000006073 displacement reaction Methods 0.000 claims description 3
- 229910000831 Steel Inorganic materials 0.000 claims 1
- 239000010959 steel Substances 0.000 claims 1
- 238000007689 inspection Methods 0.000 abstract description 8
- 230000006835 compression Effects 0.000 description 3
- 238000007906 compression Methods 0.000 description 3
- 229910001315 Tool steel Inorganic materials 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/02—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness
- G01B5/06—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness
- G01B5/061—Measuring arrangements characterised by the use of mechanical techniques for measuring length, width or thickness for measuring thickness height gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/18—Measuring arrangements characterised by the use of mechanical techniques for measuring depth
Abstract
The invention provides a tool for checking the concave-convex amount of a special rivet, and belongs to the technical field of aviation product inspection. The tool provided by the invention consists of a ruler body, a height ruler, a depth ruler and a digital display part respectively fixed on the height ruler and the depth ruler, wherein the depth ruler is inserted into a T-shaped groove of the height ruler, and then the height ruler with the depth ruler is placed in a through groove of the ruler body, so that the assembly of the three rulers is completed. The riveting concave-convex quantity checking tool has the advantages of simple structure, convenient digital display operation and portability, fills the blank of the riveting concave-convex quantity checking tool, improves the accuracy of checking results, can rapidly realize quantitative checking of riveting quality, and improves the working efficiency.
Description
Technical Field
The invention belongs to the technical field of aviation product inspection, and relates to a tool for inspecting the concave-convex amount of a special rivet, which is an inspection tool in the process of inspecting and accepting the aviation product, and is used for rapidly realizing qualitative and quantitative inspection of the concave-convex amount of the special rivet.
Background
The outer surface skin of the aircraft air inlet is subjected to single-sided compression by special rivets such as high shear rivets, threaded hollow rivets and blind rivets, the compression force of the rivets and the pneumatic appearance of the air inlet are directly influenced by the riveting quality, and the concave-convex quantity of the rivets relative to the outer edge of the skin after the riveting is finished is an important index for detecting the riveting quality; at present, inspection technicians can only use a feeler gauge to assist in inspection when inspecting the concave-convex quantity, no professional tool exists, the error is large, and the inspection requirement is difficult to meet.
Disclosure of Invention
In order to solve the problems, the invention provides a tool for checking the concave-convex amount of the special rivet, which is convenient for a checking technician to qualitatively check the concave-convex amount of the special rivet and also gives consideration to quantitative checking of the concave-convex amount, and is used for improving the working efficiency of the checking technician and the accuracy of checking results.
In order to achieve the above purpose, the technical scheme of the invention is as follows:
the tool for checking the concave-convex amount of the special rivet comprises a digital display frame 1, a digital display movable grid 2, a start button 3, a reset button 4, a recording button 5, a battery 6, a single chip microcomputer module 7, a ruler body 8, a height ruler 9, a height ruler limiting head 10, a depth ruler 11, a depth ruler probe 12, a tightening screw 13, a digital display frame fixing screw 14, a digital display screen 15, a pressing piece 16 and a glass fixed grid 17.
The ruler body 8 is a basic supporting structure of a tool, is of a strip-shaped plate-shaped structure, is provided with through grooves on the back surface along the length direction, is used for installing the height ruler 9, is in clearance fit with the through grooves, the length of the ruler body 8 is the same as that of the height ruler 9, the height ruler 9 can freely slide in the ruler body during operation, grooves with different widths are formed in the two ends of the ruler body 8 along the central line, the narrow grooves are used for limiting the movement of the depth ruler 11, and the wide grooves are measurement working areas of the height ruler 9; the upper surface and the lower surface of one end of the ruler body 8 provided with the narrow groove are respectively provided with a glass fixed grating 17 arranged along the length direction, the relative displacement generated by the glass fixed grating 17 and the digital display movable grating 2 is utilized for size conversion, and the fixed grating is matched with glass materials, so that high precision can be maintained; the edge of the bottom surface of the through groove at one end of the ruler body 8 provided with the narrow groove is provided with a pressing piece 16, the side wall of the through groove beside the pressing piece is provided with a through hole, and after the tail end of the screw 13 is screwed up to penetrate through the through hole, the tail end of the screw is matched with the pressing piece 16 and used for pressing the height ruler 9 at the working position, so that the height ruler cannot move, and accurate positioning is realized.
The height gauge 9 is used for measuring the heights of the rivet head and the rivet upsetting head, is of a strip-shaped platy structure, the molded surface of the height gauge 9 is matched with the through groove of the ruler body 8, a T-shaped groove is arranged in the middle of the contact surface of the height gauge 9 and the ruler body 8 along the length direction and used for installing the depth gauge 11, the two are in clearance fit, and the depth gauge 11 can freely slide in the height gauge 9; the height ruler limiting head 10 is fixed at one end of the height ruler 9 by using a tightening screw, the width and the thickness of the height ruler are larger than those of the height ruler 9, the height ruler 9 is placed in a through groove of the ruler body 8, and the height ruler limiting head 10 abuts against one end face of the narrow groove arranged on the ruler body 8 and is used for preventing the downward movement of the height ruler 9.
The depth gauge 11 is used for measuring the depth of the rivet head and the core, and is of a strip-shaped platy structure, wherein the middle part of the depth gauge is provided with a step bulge along the length direction, the step bulge of the upper half part is higher than the step bulge of the lower half part, and the step bulge of the upper half part is arranged in a narrow groove of the ruler body 8 and used for limiting the movement of the depth gauge 11; the tail of the depth gauge 11 is connected with a depth gauge probe 12 by adopting threaded connection, and is used for realizing the measurement of the depth with smaller diameter. The depth gauge 11 is inserted into the T-shaped groove of the height gauge 9, and then the height gauge 9 with the depth gauge 11 is placed in the through groove of the ruler body 8, so that the assembly of the three gauges is completed.
The digital display frame 1, the digital display movable grid 2, the power-on button 3, the reset button 4, the recording button 5, the battery 6, the singlechip module 7 and the digital display screen 15 form a digital display component, wherein the digital display component is provided with two groups with the same structure, namely a height digital display component and a depth digital display component, which are respectively used for realizing digital display of height and depth; the digital display frames 1 are used as supporting structures of digital display components and are of plate-shaped structures, the two digital display frames 1 are respectively positioned on the front side and the back side of one end of the ruler body 8, which is provided with a narrow groove, one digital display frame 1 is fixedly connected with the height ruler 9 through a digital display frame fixing screw 14, the other digital display frame 1 is fixedly connected to a stepped bulge on the upper half part of the depth ruler 11 through a digital display frame fixing screw 14, so that the two digital display frames 1 can respectively slide along the height ruler 9 and the depth ruler 11, the two digital display frames 1 are mutually independent, a certain gap is reserved between the two digital display frames 1, and a tightening screw 13 is positioned in the gap between the two digital display frames 1 and is not interfered with the two digital display frames; each digital display frame 1 is fixedly provided with a digital display movable grid 2, a power-on button 3, a reset button 4, a recording button 5, a battery 6, a single chip microcomputer module 7 and a digital display screen 15 through tightening screws, wherein the positions of the two digital display movable grids 2 are in one-to-one correspondence with the two glass fixed grids 17, the power-on button 3 is used for power-on and power-off, the reset button 4 is used for zeroing, the recording button 5 is used for recording a measurement process numerical value, inaccuracy caused by operation problems is avoided, along with the change of the positions of the digital display movable grids 2 relative to the glass fixed grids 17, the single chip microcomputer module 7 feeds back the numerical value of the size to the digital display screen 15 for displaying, and the battery 6 is used for supplying power to a high-digital display part and a depth digital display part.
Further, the blade 8 is made of high-strength tool steel.
Furthermore, the digital display frame 1 adopts an alloy steel structure, and has high strength.
The using method of the tool is as follows:
step one: when the protruding amount of the special rivet is checked, only the height ruler 9 moves, the power-on button 3 on the height digital display component is started, and the corresponding reset button 4 is pressed for zeroing; moving the height ruler 9 until the digital display value of the digital display screen 15 reaches the qualified height of the special rivet to be detected, and tightly pressing the height ruler 9 by screwing the screw 13; the end face of one end of the ruler body 8, which is provided with the wide groove, is vertically pressed on the skin, and a gap formed between the height ruler 9 in the wide groove and the skin is the qualified height of the special rivet to be detected; moving the whole tool along the surface of the skin towards the direction of the special rivet to be detected, ensuring that the gap between the height ruler 9 and the skin is aligned with the special rivet to be detected, and keeping the ruler body 8 vertical to the skin all the time, wherein if the protruding amount of the special rivet to be detected can pass through the gap, the protruding amount is qualified; under the condition of qualification, the end head of the height ruler 9 is attached to the top end of the special rivet to be detected, and then the compression screw 13 is screwed down for reading, so that the quantitative inspection of the protruding amount of the special rivet to be detected is realized.
Step two: when the special rivet sinking amount is checked, only the depth gauge 11 moves, the depth gauge 11 is vertically clung to the top end of the special rivet to be checked, the power-on button 3 on the depth digital display component is started, the reset button 4 is pressed for zeroing, and at the moment, the tightening screw 13 is required to compress the depth gauge 9, so that the movement of the depth gauge 9 is avoided; the depth gauge 12 is adjusted to enable the tail end of the depth gauge to contact the bottom of the special rivet core to be detected, and the depth digital display value is read to realize quantitative detection of the sinking amount of the special rivet to be detected.
The invention has the beneficial effects that:
the invention provides a special checking tool for riveting quality checking, and can realize high-precision digital display quantitative checking on the basis of qualitative checking. The riveting concave-convex quantity checking tool has the advantages of simple structure, convenient digital display operation and portability, fills the blank of the riveting concave-convex quantity checking tool, improves the accuracy of checking results by using the special digital display tool, can rapidly realize quantitative checking of riveting quality, and improves the working efficiency of checking staff.
Drawings
Fig. 1 is a front isometric view of a tool provided by the present invention.
Fig. 2 is a rear isometric view of a tool provided by the present invention.
Fig. 3 is a front view, a rear view, and a left view of the blade, wherein (a) is a front view, (b) is a rear view, and (c) is a left view.
Fig. 4 is a front view, a top view, and a left side view of the depth gauge, where (a) is a front view, (b) is a top view, and (c) is a left side view.
Fig. 5 is a front view, a rear view, and a left view of the height gauge, wherein (a) is a front view, (b) is a rear view, and (c) is a left view.
In the figure: 1, a digital display frame; 2, digital display movable grid; 3, a start button; 4, a reset button; 5 record button; 6, a battery; 7, a singlechip module; 8, a ruler body; 9 height ruler; 10 height gauge limiting head; 11 depth gauge; a 12-gauge probe; 13, screwing the screw; 14 digital display frame fixing screws; 15 digital display screen; 16 compacting sheets; 17 glass grid.
Detailed Description
The invention is further illustrated below with reference to specific examples.
Examples
The tool for checking the concave-convex amount of the special rivet comprises a digital display frame 1, a digital display movable grid 2, a start button 3, a reset button 4, a recording button 5, a battery 6, a single chip microcomputer module 7, a ruler body 8, a height ruler 9, a height ruler limiting head 10, a depth ruler 11, a depth ruler probe 12, a tightening screw 13, a digital display frame fixing screw 14, a digital display screen 15, a pressing piece 16 and a glass fixed grid 17, wherein the digital display frame is shown in fig. 1 and 2.
As shown in fig. 3, the blade 8 is a basic supporting structure of a tool, is made of high-strength tool steel, is of a strip-shaped plate structure, is provided with through grooves on the back surface along the length direction, is used for installing the height gauge 9, adopts clearance fit, the length of the blade 8 is the same as that of the height gauge 9, the height gauge 9 can freely slide in the blade during operation, grooves with different widths are arranged at two ends of the blade 8 along the central line, the narrow grooves are used for limiting the movement of the depth gauge 11, and the wide grooves are measurement working areas of the height gauge 9; the upper surface and the lower surface of one end of the ruler body 8 provided with the narrow groove are respectively provided with a glass fixed grating 17 arranged along the length direction, the relative displacement generated by the glass fixed grating 17 and the digital display movable grating 2 is utilized for size conversion, and the fixed grating is matched with glass materials, so that high precision can be maintained; the edge of the bottom surface of the through groove at one end of the ruler body 8 provided with the narrow groove is provided with a pressing piece 16, the side wall of the through groove beside the pressing piece is provided with a through hole, and after the tail end of the screw 13 is screwed up to penetrate through the through hole, the tail end of the screw is matched with the pressing piece 16 and used for pressing the height ruler 9 at the working position, so that the height ruler cannot move, and accurate positioning is realized.
As shown in fig. 5, the height gauge 9 is used for measuring the heights of the rivet head and the rivet upsetting head, and is in a strip-shaped plate structure, the molded surface of the height gauge 9 is matched with the through groove of the ruler body 8, a T-shaped groove is arranged in the middle of the contact surface of the height gauge 9 and the ruler body 8 along the length direction and is used for installing the depth gauge 11, and the two are in clearance fit, so that the depth gauge 11 can freely slide in the height gauge 9; the height ruler limiting head 10 is fixed at one end of the height ruler 9 by using a tightening screw, the width and the thickness of the height ruler are larger than those of the height ruler 9, the height ruler 9 is placed in a through groove of the ruler body 8, and the height ruler limiting head 10 abuts against one end face of the narrow groove arranged on the ruler body 8 and is used for preventing the downward movement of the height ruler 9.
As shown in fig. 4, the depth gauge 11 is used for measuring the depth of the rivet head and the core, and is in a strip-shaped plate structure, wherein the middle part of the depth gauge is provided with a step bulge along the length direction, the step bulge at the upper part is higher than the step bulge at the lower part, and the step bulge at the upper part is arranged in a narrow groove of the ruler body 8 and used for limiting the movement of the depth gauge 11; the tail of the depth gauge 11 is connected with a depth gauge probe 12 by adopting threaded connection, and is used for realizing the measurement of the depth with smaller diameter. The depth gauge 11 is inserted into the T-shaped groove of the height gauge 9, and then the height gauge 9 with the depth gauge 11 is placed in the through groove of the ruler body 8, so that the assembly of the three gauges is completed.
As shown in fig. 1 and fig. 2, the digital display frame 1, the digital display movable gate 2, the power-on button 3, the reset button 4, the recording button 5, the battery 6, the single-chip microcomputer module 7 and the digital display screen 15 form a digital display component, wherein the digital display component is provided with two groups with the same structure, namely a height digital display component and a depth digital display component, which are respectively used for realizing digital display of height and depth; the digital display frame 1 is used as a supporting structure of a digital display component, an alloy steel structure is adopted, the digital display frame 1 is of a plate-shaped structure, two digital display frames 1 are respectively positioned on the front side and the back side of one end of the ruler body 8, which is provided with a narrow groove, one digital display frame 1 is fixedly connected with the height ruler 9 through a digital display frame fixing screw 14, the other digital display frame 1 is fixedly connected to a stepped bulge on the upper half part of the depth ruler 11 through the digital display frame fixing screw 14, so that the two digital display frames 1 can respectively slide along the height ruler 9 and the depth ruler 11, the two digital display frames 1 are mutually independent, a certain gap is reserved between the two digital display frames, and a tightening screw 13 is positioned in the gap between the two digital display frames 1 and is not interfered with the two digital display frames; each digital display frame 1 is fixedly provided with a digital display movable grid 2, a power-on button 3, a reset button 4, a recording button 5, a battery 6, a single chip microcomputer module 7 and a digital display screen 15 through tightening screws, wherein the positions of the two digital display movable grids 2 are in one-to-one correspondence with the two glass fixed grids 17, the power-on button 3 is used for power-on and power-off, the reset button 4 is used for zeroing, the recording button 5 is used for recording a measurement process numerical value, inaccuracy caused by operation problems is avoided, along with the change of the positions of the digital display movable grids 2 relative to the glass fixed grids 17, the single chip microcomputer module 7 feeds back the numerical value of the size to the digital display screen 15 for displaying, and the battery 6 is used for supplying power to a high-digital display part and a depth digital display part.
The using method of the tool is as follows:
step one: when the protruding amount of the special rivet is checked, only the height ruler 9 moves, the power-on button 3 on the height digital display component is started, and the corresponding reset button 4 is pressed for zeroing; for example, the protruding amount of the high shear rivet is required to be +0.15mm, the height ruler 9 is moved until the digital display value of the digital display screen 15 reaches 0.15mm, and the height ruler 9 is tightly pressed by tightening the screw 13; the end face of one end of the ruler body 8, which is provided with the wide groove, is vertically pressed on the skin, and a gap formed between the height ruler 9 in the wide groove and the skin is the qualified height of the special rivet to be detected; the whole tool is moved along the surface of the skin towards the direction of the special rivet to be detected, the gap between the height ruler 9 and the skin is ensured to be aligned with the special rivet to be detected, the ruler body 8 is always kept perpendicular to the skin, and if the protruding amount of the special rivet to be detected can pass through the gap, the special rivet to be detected is qualified.
Step two: when the special rivet sinking amount is checked, only the depth gauge 11 moves, the depth gauge 11 is vertically clung to the top end of the special rivet to be checked, the power-on button 3 on the depth digital display component is started, the reset button 4 is pressed for zeroing, and at the moment, the tightening screw 13 is required to compress the depth gauge 9, so that the movement of the depth gauge 9 is avoided; the depth gauge 12 is adjusted so that the tail end of the depth gauge contacts the bottom of the special rivet core to be detected, the depth digital display value is read, and the sinking amount of the high shear rivet core is measured to be-1.5 mm.
The examples described above represent only embodiments of the invention and are not to be understood as limiting the scope of the patent of the invention, it being pointed out that several variants and modifications may be made by those skilled in the art without departing from the concept of the invention, which fall within the scope of protection of the invention.
Claims (4)
1. The tool for checking the concave-convex amount of the special rivet is characterized by comprising a digital display frame (1), a digital display movable grid (2), a start button (3), a reset button (4), a recording button (5), a battery (6), a singlechip module (7), a ruler body (8), a height ruler (9), a height ruler limiting head (10), a depth ruler (11), a depth ruler probe (12), a tightening screw (13), a digital display screen (15), a pressing sheet (16) and a glass fixed grid (17);
the ruler body (8) is a basic supporting structure of the tool, is of a strip-shaped plate-shaped structure, is provided with through grooves on the back surface along the length direction, and is used for installing the height ruler (9), the through grooves are in clearance fit, the length of the ruler body (8) is the same as that of the height ruler (9), the height ruler (9) can freely slide in the ruler body during operation, grooves with different widths are formed in the two ends of the ruler body (8) along the central line, the narrow grooves are used for limiting the movement of the depth ruler (11), and the wide grooves are measurement working areas of the height ruler (9); the upper and lower surfaces of one end of the ruler body (8) provided with the narrow groove are respectively provided with a glass fixed grating (17) which is arranged along the length direction, and the size conversion is carried out by utilizing the relative displacement generated by the glass fixed grating (17) and the digital display movable grating (2); the edge of the bottom surface of the through groove at one end of the ruler body (8) provided with the narrow groove is provided with a compressing sheet (16), the side wall of the through groove beside the compressing sheet is provided with a through hole, and the tail end of a tightening screw (13) penetrates through the through hole and then is matched with the compressing sheet (16) to compress the height ruler (9) at the working position;
the height gauge (9) is used for measuring the heights of the rivet head and the rivet upsetting head, is of a strip-shaped platy structure, the molded surface of the height gauge is matched with the through groove of the ruler body (8), a T-shaped groove is arranged in the middle of the contact surface of the height gauge (9) and the ruler body (8) along the length direction and is used for installing the depth gauge (11), the two are in clearance fit, and the depth gauge (11) can freely slide in the height gauge (9); the height ruler limiting head (10) is fixed at one end of the height ruler (9), the width and the thickness of the height ruler are larger than those of the height ruler (9), the height ruler (9) is arranged in a through groove of the ruler body (8), and the height ruler limiting head (10) abuts against the end face of one end of the ruler body (8) provided with the narrow groove and is used for preventing the downward movement of the height ruler (9);
the depth gauge (11) is used for measuring the depths of the rivet head and the core, is of a strip-shaped platy structure, the middle part of the depth gauge is provided with a step bulge along the length direction, the step bulge of the upper half part is higher than the step bulge of the lower half part, and the step bulge of the upper half part is arranged in a narrow groove of the gauge body (8) and used for limiting the movement of the depth gauge (11); the tail part of the depth gauge (11) is connected with a depth gauge probe (12) by adopting threaded connection, and is used for realizing the measurement of the depth with smaller diameter;
the digital display frame (1), the digital display movable grid (2), the power-on button (3), the reset button (4), the recording button (5), the battery (6), the singlechip module (7) and the digital display screen (15) form a digital display component, and the two groups of digital display components with the same structure are arranged together and are respectively used for realizing digital display of height and depth; the digital display frames (1) are used as supporting structures of digital display components and are of plate-shaped structures, the two digital display frames (1) are respectively positioned on the front side and the back side of one end of the ruler body (8) provided with a narrow groove, one digital display frame (1) is fixedly connected with the height ruler (9), the other digital display frame (1) is fixedly connected to the stepped bulge on the upper half part of the depth ruler (11), so that the two digital display frames (1) can slide along with the height ruler (9) and the depth ruler (11) respectively, the two digital display frames (1) are mutually independent and a certain gap is reserved between the two digital display frames, and a tightening screw (13) is positioned in the gap between the two digital display frames (1) and is not interfered with the two digital display frames; each digital display frame (1) is fixedly provided with a digital display movable grid (2), a start button (3), a reset button (4), a recording button (5), a battery (6), a single chip microcomputer module (7) and a digital display screen (15), wherein the positions of the two digital display movable grids (2) are in one-to-one correspondence with the two glass fixed grids (17), the start button (3) is used for starting and shutting down, the reset button (4) is used for zeroing, the recording button (5) is used for recording the numerical value of the measurement process, the single chip microcomputer module (7) feeds back the numerical value of the size to the digital display screen (15) for displaying, and the battery (6) is used for supplying power.
2. The tool for checking the concave-convex amount of the special rivet according to claim 1, wherein the two digital display frames (1) are fixedly connected with the height gauge (9) and the depth gauge (11) through digital display frame fixing screws (14) respectively.
3. Tool for checking the relief of special rivets according to claim 1, characterized in that the blade (8) is made of steel.
4. The tool for checking the concave-convex amount of the special rivet according to claim 1, wherein the digital display frame (1) adopts an alloy steel structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211243446.8A CN115451779B (en) | 2022-10-12 | 2022-10-12 | Tool for checking concave-convex amount of special rivet |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211243446.8A CN115451779B (en) | 2022-10-12 | 2022-10-12 | Tool for checking concave-convex amount of special rivet |
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| Publication Number | Publication Date |
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| CN115451779A CN115451779A (en) | 2022-12-09 |
| CN115451779B true CN115451779B (en) | 2024-04-16 |
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| CN202211243446.8A Active CN115451779B (en) | 2022-10-12 | 2022-10-12 | Tool for checking concave-convex amount of special rivet |
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|---|---|---|---|---|
| SU1345051A1 (en) * | 1986-01-08 | 1987-10-15 | Предприятие П/Я А-7760 | Device for checking depth of location of inner grooves in parts |
| US5491907A (en) * | 1994-08-26 | 1996-02-20 | Hanover Catalog Holdings, Inc. | Multi-functional gauge |
| JP2004325387A (en) * | 2003-04-28 | 2004-11-18 | Olympus Corp | Instrument for measuring depth of sagittal depth |
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