CN111060244A - Rivet core bar ejection force detection tool - Google Patents
Rivet core bar ejection force detection tool Download PDFInfo
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- CN111060244A CN111060244A CN201911317031.9A CN201911317031A CN111060244A CN 111060244 A CN111060244 A CN 111060244A CN 201911317031 A CN201911317031 A CN 201911317031A CN 111060244 A CN111060244 A CN 111060244A
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- rivet
- ejection force
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- hole
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
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- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a tool for detecting the ejection force of a rivet core rod, which comprises a riveting piece, an ejector rod, an upper base and a lower base which are opposite up and down, wherein the riveting piece is arranged in a first groove and comprises an upper riveting piece and a lower riveting piece, the upper riveting piece and the lower riveting piece are riveted through a tested rivet, different riveting pieces can rivet different types of tested rivets, the ejector rod ejects the head part of the mandrel of the tested rivet by pressing the base downwards, and the pressure of the pressure, namely the ejection force of the rivet, is detected through pressure detection equipment, so that the tool does not need to be replaced, and the size of the ejection force of different rivets can be tested by replacing the riveting piece.
Description
Technical Field
The invention relates to the technical field of rivet ejection force detection, in particular to a rivet core rod ejection force detection tool.
Background
The rivet is widely applied in the field of aviation standard parts and is mainly used for single-side connection of aircraft skins and other composite materials. Rivets applied to the field of aviation are mostly blind rivets, and compared with common fasteners, the structure of the blind rivet is more complex and is usually assembled by a rivet body, a core rod and other assemblies. Therefore, the product must be tested for a plurality of mechanical indexes, wherein the ejection force of the core rod is one of the mechanical indexes. The ejection force is a force which applies axial pressure to the riveted nail core head to slowly eject the nail core head from the inside of the rivet body.
The existing ejection force test has two problems, one is that the relevant standards do not uniformly specify the tool clamps of the detection project, which causes great difference in the test results of different testers on different equipment and different tool clamps; the second point is that the blind rivets are of many types, have various structures and do not well solve the problem of quick interchangeability of the tool.
Disclosure of Invention
The invention aims to at least solve one of the technical problems in the prior art, and provides a tool for detecting ejection force of a rivet mandrel, which can measure the ejection force of rivets of different types.
The invention provides a rivet core rod ejection force detection tool, which comprises a riveting piece, an ejector rod, an upper base and a lower base, wherein the upper base and the lower base are arranged in an up-down opposite mode, a rivet to be detected is arranged on the riveting piece, a first groove is formed in the upper end of the lower base, a first through hole is formed below the first groove, the riveting piece is arranged in the first groove, a second through hole opposite to the rivet to be detected is formed in the upper end of the upper base, the ejector rod is arranged in the second through hole, and a cover plate is arranged at the upper end of the second through hole.
Has the advantages that: the riveting piece is arranged in the first groove and used for riveting the rivet to be tested, different riveting pieces can rivet different types of rivets to be tested, the ejector rod ejects out of the head of the core rod of the rivet to be tested by pressing the base downwards, and the pressing pressure, namely the ejecting force of the rivet, is measured by the pressure detection equipment, so that the tool does not need to be replaced, and the ejecting force of different rivets can be tested by replacing the riveting pieces. The problem of measurement result accuracy caused by different tool system error factors is avoided, the problem of testing different product models is solved through rapid exchange of tool local structures, and the field detection efficiency is improved.
The riveting piece comprises an upper riveting piece and a lower riveting piece, and the upper riveting piece and the lower riveting piece are riveted through a rivet to be tested.
According to the rivet core rod ejection force detection tool provided by the invention, the upper end of the upper base is provided with a first mounting groove communicated with the second through hole, and the cover plate is arranged in the first mounting groove.
According to the rivet core rod ejection force detection tool, the cover plate is connected with the upper base through screws.
The invention provides a rivet mandrel ejection force detection tool, which further comprises a guide rod and a guide sleeve, wherein the guide sleeve is arranged on a lower base, the guide rod is vertically arranged, one end of the guide rod is connected with the upper base, the other end of the guide rod is connected with the guide sleeve, and the guide rod can move along the guide sleeve.
The invention provides a rivet core rod ejection force detection tool, wherein an upper base comprises an upper plate and a first boss arranged on the lower end face of the upper plate, the upper plate and the first boss form a first step, a first mounting hole is formed in the first step face of the first step, and one end of a guide rod is arranged in the first mounting hole; the lower base comprises a lower plate and a second boss arranged on the upper end face of the lower plate, the lower plate and the second boss form a second step, a second mounting hole opposite to the first mounting hole is formed in a second step face 206 of the second step, and the guide sleeve is arranged in the second mounting hole.
According to the rivet core rod ejection force detection tool provided by the invention, an avoidance groove 103 is formed in the lower end face of the upper base, and the avoidance groove 103 is formed in the bottom of the second through hole.
Drawings
The invention is further described below with reference to the accompanying drawings and examples;
FIG. 1 is a sectional view of a mandrel ejection force detecting tool in a preferred embodiment of the present invention;
FIG. 2 is a cross-sectional view of the upper base in a preferred embodiment of the present invention;
FIG. 3 is a cross-sectional view of the lower base in a preferred embodiment of the present invention.
Detailed Description
Reference will now be made in detail to the present preferred embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like reference numerals refer to like elements throughout.
In the description of the present invention, it should be understood that the orientation or positional relationship referred to in the description of the orientation, such as the upper, lower, front, rear, left, right, etc., is based on the orientation or positional relationship shown in the drawings, and is only for convenience of description and simplification of description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention.
In the description of the present invention, the meaning of a plurality of means is one or more, the meaning of a plurality of means is two or more, and larger, smaller, larger, etc. are understood as excluding the number, and larger, smaller, inner, etc. are understood as including the number. If the first and second are described for the purpose of distinguishing technical features, they are not to be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.
In the description of the present invention, unless otherwise explicitly limited, terms such as arrangement, installation, connection and the like should be understood in a broad sense, and those skilled in the art can reasonably determine the specific meanings of the above terms in the present invention in combination with the specific contents of the technical solutions.
Referring to fig. 1 to 3, the invention provides a rivet stem ejection force detection tool, which includes a riveting member 700, an ejector rod 400, an upper base 100 and a lower base 200 that are opposite to each other, wherein the riveting member 700 includes an upper riveting sheet 701 and a lower riveting sheet 702, the upper riveting sheet 701 and the lower riveting sheet 702 are riveted by a tested rivet 600, the shape of the rivet member may be a cube, a cylinder, or the like, and in this embodiment, the shape of the rivet member is a rectangular parallelepiped. The upper end of the lower base 200 is provided with a first groove 201, a first through hole 202 is arranged below the first groove 201, the riveting piece 700 is arranged in the first groove 201, the riveting piece can be detached and replaced, a second through hole 102 opposite to the tested rivet 600 is arranged at the upper end of the upper base 100, the ejector rod 400 is arranged in the second through hole 102, a cover plate 101 is arranged at the upper end of the second through hole 102, the cover plate 101 can be detached, the cover plate 101 is detached firstly during use, then the ejector rod 400 is placed in the second through hole 102, then the cover plate 101 is installed, and the ejector rod 400 is convenient to install.
According to the invention, the riveting piece 700 is arranged in the first groove 201, the riveting piece can be detached and replaced at will, different riveting pieces 700 can rivet different types of rivets 600 to be tested, the mandril 400 can eject the core rod head 601 of the rivet 600 to be tested by pressing the upper base 100 downwards, and the pressing pressure, namely the ejecting force of the rivet, is measured by the pressure detection equipment, so that the tool does not need to be replaced, and the ejecting force of different types of rivets can be tested by replacing the riveting piece 700.
Further, the upper end of the upper base 100 is provided with a first mounting groove 108 communicated with the second through hole 102, the cover plate 101 is arranged in the first mounting groove 108, and the upper end faces of the cover plate 101 and the upper base 100 are flush through the mounting groove.
Further, the cover plate 101 is connected to the upper base 100 by screws, and may be connected by a snap fit in other embodiments.
Further, the detection tool of the embodiment further includes a guide rod 300 and a guide sleeve 500, the upper base 100 includes an upper plate 107 and a first boss 106 disposed on a lower end surface of the upper plate 107, the upper plate 107 and the first boss 106 form a first step, and a first mounting hole 104 is disposed on a first step surface 105 of the first step; the lower base 200 comprises a lower plate 203 and a second boss 204 arranged on the upper end surface of the lower plate 203, the lower plate 203 and the second boss 204 form a second step, a second mounting hole 205 opposite to the first mounting hole 104 is arranged on a second step surface 206 of the second step, the guide sleeve 500 is arranged in the second mounting hole 205, and the guide sleeve 500 is in interference fit with the second mounting hole 205. One end of the guide rod 300 is disposed in the first mounting hole 104, and the other end is connected to the guide sleeve 500, the guide rod 300 can move along the guide sleeve 500, and both the guide rod 300 and the guide sleeve 500 are vertically disposed. The upper base 100 and the lower base 200 are stepped, so that the guide rails and the guide sleeves 500 are conveniently assembled, and the upper base 100 and the lower base 200 can perform precise axial movement by matching the guide rods 300 and the guide sleeves 500.
Further, the lower end surface of the upper base 100 is provided with an avoiding groove 103, and the avoiding groove 103 is arranged at the bottom of the second through hole 102. The avoiding groove 103 should be slightly larger than the head of the tested rivet 600 for avoiding the head of the rivet 602 from interfering and colliding with the upper base 100.
The working principle of the invention is as follows: the upper riveting sheet 701 and the lower riveting sheet 702 are riveted by the tested rivet 600 to form a rivet piece, the rivet body 602 and the mandrel head 601 of the tested rivet 600 are arranged in the rivet piece, then the rivet piece is placed in the first groove 201, the guide pillar of the upper base 100 is placed in the inverted sleeve for pre-guiding, and accurate guiding is guaranteed. The cover plate 101 is disassembled, the lift pins 400 are placed in the second through holes 102, and then the cover plate 101 is installed. The lower base 200 is placed on a workbench of a cross beam of the press, and the tool moves upwards along with the cross beam. When the upper base 100 contacts the upper fixed beam of the press, the equipment is equivalent to start to apply load pressure to the whole tool, so that the cover plate 101 applies certain pressure to the ejector rod 400, and the ejector rod 400 applies force to eject the head 601 of the core rod from the inside of the rivet body 602. The detection device collects the prepared force value of the release force in real time through the pressure sensor.
The embodiments of the present invention have been described in detail with reference to the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge of those skilled in the art without departing from the gist of the present invention.
Claims (7)
1. The utility model provides a rivet core bar ejection force detects frock which characterized in that includes: the riveting piece (700), the ejector rod (400) and the upper base (100) and the lower base (200) which are arranged up and down oppositely are arranged, the rivet (600) to be tested is arranged on the riveting piece (700), a first groove (201) is arranged at the upper end of the lower base (200), a first through hole (202) is arranged below the first groove (201), the riveting piece (700) is arranged in the first groove (201), a second through hole (102) opposite to the rivet (600) to be tested is arranged at the upper end of the upper base (100), the ejector rod (400) is arranged in the second through hole (102), and a cover plate (101) is arranged at the upper end of the second through hole (102).
2. The rivet core rod ejection force detection tool according to claim 1, characterized in that: the rivet (700) comprises an upper rivet piece (701) and a lower rivet piece (702), and the upper rivet piece (701) and the lower rivet piece (702) are riveted through a tested rivet (600).
3. The rivet core rod ejection force detection tool according to claim 1, characterized in that: the upper end of the upper base (100) is provided with a first mounting groove (108) communicated with the second through hole (102), and the cover plate (101) is arranged in the first mounting groove (108).
4. The rivet stem ejection force detection tool according to claim 1 or 3, characterized in that: the cover plate (101) is connected with the upper base (100) through screws.
5. The rivet core rod ejection force detection tool according to claim 1, characterized in that: the guide sleeve (500) is installed on the lower base (200), the guide rod (300) is vertically arranged, one end of the guide rod (300) is connected with the upper base (100), the other end of the guide rod is connected with the guide sleeve (500), and the guide rod (300) can move along the guide sleeve (500).
6. The rivet core rod ejection force detection tool according to claim 5, characterized in that: the upper base (100) comprises an upper plate (107) and a first boss (106) arranged on the lower end face of the upper plate (107), the upper plate (107) and the first boss (106) form a first step, a first step face (105) of the first step is provided with a first mounting hole (104), and one end of the guide rod (300) is arranged in the first mounting hole (104); the lower base (200) comprises a lower plate (203) and a second boss (204) arranged on the upper end face of the lower plate (203), the lower plate (203) and the second boss (204) form a second step, a second mounting hole (205) opposite to the first mounting hole (104) is formed in a second step face 206 of the second step, and the guide sleeve (500) is arranged in the second mounting hole (205).
7. The rivet core rod ejection force detection tool according to claim 1, characterized in that: the lower end of the upper base (100) is provided with an avoiding groove 103, and the avoiding groove 103 is formed in the bottom of the second through hole (102).
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921311322 | 2019-08-13 | ||
| CN2019213113222 | 2019-08-13 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111060244A true CN111060244A (en) | 2020-04-24 |
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Family Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922319610.9U Active CN211504484U (en) | 2019-08-13 | 2019-12-19 | Rivet core bar ejection force detection tool |
| CN201911317031.9A Pending CN111060244A (en) | 2019-08-13 | 2019-12-19 | Rivet core bar ejection force detection tool |
Family Applications Before (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201922319610.9U Active CN211504484U (en) | 2019-08-13 | 2019-12-19 | Rivet core bar ejection force detection tool |
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| Country | Link |
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| CN (2) | CN211504484U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414124A (en) * | 2022-01-19 | 2022-04-29 | 航天精工股份有限公司 | Tool and method for testing locking torque of threaded self-plugging rivet |
| CN114414118A (en) * | 2022-01-28 | 2022-04-29 | 航天精工股份有限公司 | Frock is measured to self-plugging rivet core bar holding power |
| CN114636619A (en) * | 2022-05-19 | 2022-06-17 | 歌尔股份有限公司 | Test fixture and riveting force test equipment |
-
2019
- 2019-12-19 CN CN201922319610.9U patent/CN211504484U/en active Active
- 2019-12-19 CN CN201911317031.9A patent/CN111060244A/en active Pending
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114414124A (en) * | 2022-01-19 | 2022-04-29 | 航天精工股份有限公司 | Tool and method for testing locking torque of threaded self-plugging rivet |
| CN114414118A (en) * | 2022-01-28 | 2022-04-29 | 航天精工股份有限公司 | Frock is measured to self-plugging rivet core bar holding power |
| CN114414118B (en) * | 2022-01-28 | 2024-04-16 | 航天精工股份有限公司 | Core bar holding force measuring tool for self-plugging rivet |
| CN114636619A (en) * | 2022-05-19 | 2022-06-17 | 歌尔股份有限公司 | Test fixture and riveting force test equipment |
Also Published As
| Publication number | Publication date |
|---|---|
| CN211504484U (en) | 2020-09-15 |
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