CN114755006A - Method and device for measuring deformation performance of automobile sealing ring part - Google Patents
Method and device for measuring deformation performance of automobile sealing ring part Download PDFInfo
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- CN114755006A CN114755006A CN202210336551.XA CN202210336551A CN114755006A CN 114755006 A CN114755006 A CN 114755006A CN 202210336551 A CN202210336551 A CN 202210336551A CN 114755006 A CN114755006 A CN 114755006A
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- 238000000034 method Methods 0.000 title claims abstract description 30
- 238000012360 testing method Methods 0.000 claims abstract description 68
- 230000006835 compression Effects 0.000 claims abstract description 53
- 238000007906 compression Methods 0.000 claims abstract description 53
- 238000005259 measurement Methods 0.000 claims abstract description 11
- 239000000463 material Substances 0.000 claims description 18
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- 230000032683 aging Effects 0.000 claims description 4
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/005—Sealing rings
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/02—Details
- G01N3/04—Chucks
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/08—Investigating strength properties of solid materials by application of mechanical stress by applying steady tensile or compressive forces
- G01N3/18—Performing tests at high or low temperatures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
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- G01N2203/0016—Tensile or compressive
- G01N2203/0019—Compressive
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0075—Strain-stress relations or elastic constants
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0222—Temperature
- G01N2203/0226—High temperature; Heating means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/022—Environment of the test
- G01N2203/0236—Other environments
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
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- G—PHYSICS
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- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
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Abstract
The application provides a method and a device for measuring the deformation performance of an automobile sealing ring part, wherein the method comprises the following steps: selecting a sample with a set length from the sealing ring of the experimental object; adjusting the curvatures of an upper pressure plate and a lower pressure plate of the measuring device to be matched with the sample; clamping and compressing the sample by the upper pressing plate and the lower pressing plate for a first set time; and after the sample is compressed and is recovered for a second set time, when the thickness of the measured sample in the compression direction does not reach the set thickness, the seal ring of the experimental object does not reach the standard. The deformation performance of the sealing ring is tested by adopting the adjustable upper pressing plate and the adjustable lower pressing plate, the matched compression clamp does not need to be disassembled according to the change of a sample, the radian of the pressing plate is controlled in a moving way, the test process is simplified, and the test efficiency is greatly improved; the test process is simple and convenient to operate, the test method is scientific and reasonable, intelligent and accurate displacement control and parameter measurement can be realized, the sample is sampled from the product, the processing time of a standard sample block is saved, and the effectiveness of the detection result is ensured.
Description
Technical Field
One or more embodiments of the present disclosure relate to the field of automotive technologies, and in particular, to a method and an apparatus for measuring deformation performance of an automotive seal ring component.
Background
Automotive sealing products are sealed by interference fit and elasticity of materials, so for the sealing products, the compression set performance of the materials is a key item for evaluating the service life and the sealing performance of the sealing products. From the viewpoint of material properties, the better the compression set property, the better the sealing property. The reduction of the interference of sealing caused by the poor compression set performance of the material is one of the common factors causing the failure of the sealing element.
The compression set of general rubber and elastomer materials is data obtained by adopting standard test conditions of standard test samples (test samples in GB/T7759: a cylinder with the diameter of 29mm and the height of 12.5mm or the diameter of 13mm and the height of 6.3), and for sealed products, the compression set influences more factors, such as materials, temperature, seal ring linear diameter, compression ratio and the like, have certain relations. Therefore, the compression set data according to GB/T7759 often does not truly reflect the compression set properties of the sealed product.
The compression set of the seal ring is related to the temperature, initial compression amount, grease, etc., in addition to the properties of the material itself. In the existing testing method, the initial compression value of the sample is realized through height limitation (bolts), and the simulation mode is effective for the sealing ring working under the working condition of fixed size limitation. When the size clearance of sealing washer operating mode environment is changeable, because elastic material's creep characteristic, the compression interval can constantly reduce under the compression of constant load, and the data that adopt fixed height to limit to obtain can deviate to some extent.
Disclosure of Invention
In view of this, an object of one or more embodiments of the present disclosure is to provide a method and an apparatus for measuring deformation performance of a sealing ring component of an automobile, so as to solve the problem of accuracy of component detection.
In a first aspect, a method for testing the deformation performance of an automotive seal ring part is provided, and the method comprises the following steps: measuring the diameter and the wire diameter of the sealing ring of the experimental object; selecting a sample with a set length from the experimental object sealing ring; adjusting the curvatures of an upper pressure plate and a lower pressure plate of the measuring device according to the measured diameter and the measured linear diameter of the experimental object sealing ring; putting the sample into the upper pressing plate and the lower pressing plate, and compressing the upper pressing plate downwards to enable the compression rate of the sample to be within a set compression rate range; keeping the sample in a compressed state for a first set time; and after the sample is taken down from the measuring device and second set time is recovered, measuring the thickness of the sample in the compression direction, and judging that the sealing ring of the experimental object does not reach the standard when the thickness does not reach the set thickness. In the technical scheme, the deformation performance of the sealing ring is tested by adopting the adjustable upper pressing plate and the adjustable lower pressing plate, the matched compression clamp does not need to be disassembled according to the change of a sample, the radian of the pressing plate is controlled through movement, the test process is simplified, and the test efficiency is greatly improved; the test process is simple and convenient to operate, the test method is scientific and reasonable, intelligent and accurate displacement control and parameter measurement can be realized, the sample is sampled from the product, the processing time of a standard sample block is saved, and the effectiveness of the detection result is ensured.
In a specific possible embodiment, the method further comprises applying grease to both surfaces of the test piece in contact with the upper platen and the lower platen; or lubricating grease is coated on the surfaces of the upper pressing plate and the lower pressing plate, which are in contact with the sample. And the lubrication degree between the sample and the upper pressure plate and the lower pressure plate is maintained.
In a specific possible embodiment, the method further comprises: and after the sample is placed into the upper pressing plate and the lower pressing plate and the upper pressing plate is compressed and locked downwards, the measuring device is placed into a test box with a set test temperature. The real environment of the model sample improves the detection effect.
In a specific embodiment, the method further comprises: and putting the sample into the upper pressure plate and the lower pressure plate, compressing and locking the upper pressure plate downwards, installing a separated sealed container around the upper pressure plate and the lower pressure plate, and injecting a test medium into the separated sealed container. The real environment of the sample is simulated, and the detection effect is improved.
In a specific possible embodiment, the method further comprises: conditioning at standard laboratory temperature prior to said sample testing; for elastomeric materials, the materials are placed in an aging oven for heat treatment. The detection effect is improved.
In a specific possible embodiment, the first set time is between 24h and 72 h.
In a particular embodiment, the compressibility is in the range of 10% to 25%.
In a second aspect, a measuring device is provided, which includes a support, an upper pressing plate and a lower pressing plate arranged oppositely; a space for accommodating a test piece is formed between the upper pressure plate and the lower pressure plate; the lower pressure plate is fixedly connected with the support through the first adjusting assembly, and the curvature of the lower pressure plate can be adjusted through the first adjusting assembly; the device also comprises a second adjusting assembly which is connected with the support in a sliding mode and can be locked, and the second adjusting assembly is connected with the upper pressure plate and can adjust the curvature of the upper pressure plate. In the technical scheme, the deformation performance of the sealing ring is tested by adopting the adjustable upper pressing plate and the adjustable lower pressing plate, the matched compression clamp does not need to be disassembled according to the change of a sample, the radian of the pressing plate is controlled through movement, the test process is simplified, and the test efficiency is greatly improved; the test process is simple and convenient to operate, the test method is scientific and reasonable, intelligent and accurate displacement control and parameter measurement can be realized, the sample is sampled from the product, the processing time of a standard sample block is saved, and the effectiveness of the detection result is ensured.
In a specific embodiment, the second adjustment assembly includes a beam slidably coupled to the support; a support rod fixed on the cross beam; the first group of inclined supporting rods and the second group of inclined supporting rods are arranged along the length direction of the supporting rods; the first group of diagonal braces comprise two first diagonal braces, one end of each first diagonal brace is hinged with the upper pressure plate, and the other end of each first diagonal brace is connected with the support bar in a sliding manner and can be locked at a set position; the second group of inclined supporting rods comprises two second inclined supporting rods, one end of each second inclined supporting rod is hinged with the upper pressing plate, and the other end of each second inclined supporting rod is connected with the supporting rod in a sliding mode and can be locked at a set position; one end of the supporting rod, which is far away from the cross beam, is fixedly connected with the upper pressing plate. The adjustment of the upper pressure plate is realized through different inclined support rods.
In a specific embodiment, the first adjusting assembly includes a plurality of telescopic rods arranged along the length direction of the lower pressing plate, one end of each telescopic rod is fixedly connected with the support, and the other end of each telescopic rod is hinged with the lower pressing plate. The adjustment of the lower pressing plate is realized through a plurality of telescopic rods.
In a specific possible embodiment, the injection device further comprises a separate sealed container and an injection device, wherein the separate sealed container wraps the upper pressing plate and the lower pressing plate; the injection device is in communication with the split seal and is for injecting media into the split seal. The detection effect is improved.
In a specific embodiment, the apparatus further comprises a constant pressure device connected to the second adjusting assembly and configured to apply a set load pressure to the upper platen. The detection effect is improved.
Drawings
In order to more clearly illustrate one or more embodiments or prior art solutions of the present specification, the drawings that are needed in the description of the embodiments or prior art will be briefly described below, it is obvious that the drawings in the description below are only one or more embodiments of the present specification, and that other drawings may be obtained by those skilled in the art without inventive effort.
Fig. 1 is a schematic structural diagram of a measurement apparatus provided in an embodiment of the present application;
fig. 2 is a flowchart of a method for testing deformation performance of an automotive seal ring part according to an embodiment of the present application.
Detailed Description
To make the objects, technical solutions and advantages of the present disclosure more apparent, the present disclosure will be described in further detail below with reference to specific embodiments and the accompanying drawings.
It is to be understood that unless otherwise defined, technical or scientific terms used in one or more embodiments of the present disclosure should have the ordinary meaning as understood by one of ordinary skill in the art to which this disclosure belongs. The use of "first," "second," and similar terms in one or more embodiments of the specification is not intended to indicate any order, quantity, or importance, but rather is used to distinguish one element from another. The word "comprising" or "comprises", and the like, means that the element or item preceding the word comprises the element or item listed after the word and its equivalent, but does not exclude other elements or items. The terms "connected" or "coupled" and the like are not restricted to physical or mechanical connections, but may include electrical connections, whether direct or indirect. "upper", "lower", "left", "right", and the like are used only to indicate relative positional relationships, and when the absolute position of the object being described is changed, the relative positional relationships may also be changed accordingly.
The sealing ring parts are parts commonly used in automobiles, the sealing effect of the sealing ring parts directly influences the use effect of equipment, in the prior art, the compression permanent deformation of general rubber and elastomer materials is data obtained by adopting standard test conditions of standard samples (samples in GB/T7759: a cylinder with the diameter of 29mm and the height of 12.5mm or the diameter of 13mm and the height of 6.3), and for sealing products, the compression permanent deformation influences more factors, such as materials, temperature, the wire diameter of the sealing ring, compression ratio and the like, have certain relations. Therefore, the compression set data according to GB/T7759 often does not truly reflect the compression set performance of the sealed product. To this end, embodiments of the present application provide a measurement apparatus and a measurement method, which are described in detail below with reference to specific drawings.
For the convenience of understanding the measuring apparatus provided in the embodiment of the present application, firstly, a sample adopted by the measuring apparatus provided in the embodiment of the present application is described, and compression set of general rubber and elastomer materials is tested by using the GB/T7759 standard, where the test is performed by using a cylindrical standard sample block with a diameter of 29mm and a height of 12.5mm or a diameter of 13mm and a height of 6.3, and the sample adopted in the embodiment of the present application is directly sampled from a sealing ring component, which is not limited by a cross-sectional structure of the component, and the component may be a sealing ring with different structures, such as an O-ring, a square ring, and a Y-ring.
Referring to fig. 1, fig. 1 shows a schematic structural diagram of a measurement apparatus provided in an embodiment of the present application, and a main structure of the measurement apparatus includes a support, an upper platen, a lower platen, and a first adjustment assembly and a second adjustment assembly. The support is used as a supporting structure of the whole measuring device to support the upper pressure plate and the lower pressure plate. The upper pressing plate and the lower pressing plate are used for pressing and holding a test piece, the upper pressing plate and the lower pressing plate are arranged oppositely, a gap is arranged between the upper pressing plate and the lower pressing plate, and the gap is a space for accommodating the test piece. The first adjusting component and the second adjusting component are used for adjusting the curvature of the upper pressing plate and the lower pressing plate and the gap between the upper pressing plate and the lower pressing plate, namely the compression amount of the test piece. Specifically, the first adjusting assembly fixedly connects the lower pressing plate with the support and can adjust the curvature of the lower pressing plate; the second adjustment subassembly is connected upper plate and support to the camber of adjustable upper plate, in addition, the second adjustment subassembly lies in when the support is connected, adopts the slip assembly and lockable mode, thereby through the sliding position of adjustment second adjustment subassembly, adjustable upper plate and holding down plate are to the compression volume of test piece. The specific structure of the measuring device is described below with reference to the accompanying drawings.
The support comprises a base for supporting the whole testing device, and in fig. 1, the base is a rectangular plate, but in the embodiment of the present application, the base is not limited to the rectangular plate, and other plates with different shapes such as circular, oval and the like can also be used. The base can be made of metal materials, such as steel, iron, aluminum and other materials with certain structural strength.
The support also comprises two opposite vertical rods, the height direction of the vertical rods is along the vertical direction, the two vertical rods are separated by a certain distance, and the distance is a space for accommodating the upper pressing plate and the lower pressing plate. When the upper pressing plate and the lower pressing plate are assembled, the two vertical rods are located on two sides of the upper pressing plate and the lower pressing plate in the horizontal direction. Specifically, two vertical rods are arranged along two sides of the length direction of the upper pressing plate and the lower pressing plate.
The upper pressing plate and the lower pressing plate are two relatively arc-shaped plates, the upper pressing plate is bent upwards, the concave side of the upper pressing plate is located above the concave side of the upper pressing plate, and similarly, the lower pressing plate is also bent upwards, the curvatures of the upper pressing plate and the lower pressing plate are equal or approximately equal, so that an arc-shaped gap matched with the sample is formed in the space between the upper pressing plate and the lower pressing plate, when the sample is placed between the upper pressing plate and the lower pressing plate, the sample can be completely attached to the sample, and when the sample is compressed, the compression condition of the reaction sample can be real. Specifically, during adjustment, the curvature of the lower pressure plate is adjusted to the curvature of the sample through the first adjusting assembly, and the curvature of the upper pressure plate is adjusted to the curvature of the sample through the second adjusting assembly, so that the lower pressure plate can be completely attached to the sample. It should be understood that the upper pressing plate and the lower pressing plate are made of materials with elastic deformation and certain structural strength, and if the upper pressing plate and the lower pressing plate are made of steel, certain elasticity is guaranteed, sufficient structural strength is guaranteed, and deformation cannot occur in a compressed sample.
The first adjusting assembly is used as an assembly for adjusting the lower pressing plate and comprises a plurality of telescopic rods which are arranged along the length direction of the lower pressing plate, one end of each telescopic rod is fixedly connected with the support, and the other end of each telescopic rod is hinged with the lower pressing plate. Fig. 1 shows that the first adjustment assembly includes three telescopic rods, the three telescopic rods are arranged along the length direction of the lower press plate, the middle telescopic rod is hinged to the lowest position of the lower press plate, the two telescopic rods on both sides are symmetrically arranged relative to the middle telescopic rod, and the telescopic rods on both sides are hinged to the position close to the end portion of the lower press plate, so that when the lengths of the three telescopic rods are adjusted, the curvature of the lower press plate can be adjusted.
As an alternative, each telescopic rod is a rod which changes the length of the telescopic rod through spiral rotation, and illustratively, each telescopic rod comprises a first screw rod and a second screw rod, and the first screw rod and the second screw rod are respectively connected with the base and the lower pressing plate in a one-to-one correspondence manner. The first screw rod and the second screw rod are provided with threads with opposite rotation directions, and the screw rod further comprises screw sleeves in screw connection with the two screw rods, when the screw sleeves are rotated clockwise, the length of the telescopic rod is increased, and when the screw rods are rotated anticlockwise, the length of the telescopic rod is reduced; or when the screw sleeve is rotated along the comfortable pillow, the length of the telescopic rod is reduced, and when the screw sleeve is rotated along the anticlockwise direction, the length of the telescopic rod is increased.
It should be understood that, in the embodiment of the present application, the number of the telescopic rods is not specifically limited, and the number of the telescopic rods is at least three, such as three, four, five, six, and the like, which is not specifically limited in the embodiment of the present application.
The second adjusting component is used as a component for adjusting the lower pressing plate and comprises a cross beam connected with the support in a sliding mode, a supporting rod fixed on the cross beam, and a first group of inclined supporting rods and a second group of inclined supporting rods which are arranged along the length direction of the supporting rod. When specifically setting up the crossbeam, the crossbeam sliding assembly is on two montants, if the crossbeam suit on two montants and lockable in the position of difference, exemplarily, wear to be equipped with the locking bolt on the crossbeam, after the crossbeam slides to required position, it is fixed with the crossbeam locking through the locking bolt to make the clearance between top board and the lower clamp plate keep at required size. When the sample is clamped, the compression rate of the sample can be adjusted by adjusting the position of the beam.
When the curvature of the upper pressure plate is adjusted, the upper pressure plate is realized through the arranged support rods, the first group of inclined support rods and the second group of inclined support rods. Illustratively, the first group of diagonal braces and the second group of diagonal braces are arranged at intervals along the length direction of the brace rod, and each group of diagonal braces comprises two diagonal braces. Specifically, the first group of diagonal braces comprises two first diagonal braces, the two first diagonal braces are symmetrically arranged on two sides of the support rod in a split manner, one end of each first diagonal brace is hinged with the upper pressure plate, and the other end of each first diagonal brace is connected with the support rod in a sliding manner and can be locked at a set position; the second group of diagonal braces comprises two second diagonal braces which are symmetrically arranged on two sides of the supporting rod in a split manner, one end of each second diagonal brace is hinged with the upper pressure plate, and the other end of each second diagonal brace is connected with the supporting rod in a sliding manner and can be locked at a set position; one end of the supporting rod far away from the cross beam is fixedly connected with the upper pressure plate. As shown in fig. 1, the first diagonal brace, the support rod, and the second diagonal brace are arranged at a position hinged to the upper platen along a length direction of the upper platen, wherein a position where the support rod is connected to the upper platen is located at a lowest end of the upper platen, and positions where the first diagonal brace, the second diagonal brace, and the upper platen are hinged are arranged at intervals along a direction toward an end of the upper platen. When the curvature of the upper pressure plate needs to be adjusted, the curvature of the upper pressure plate is adjusted by sliding the first inclined supporting rod and the second inclined supporting rod. After the upper pressure plate is adjusted in place, the first inclined supporting rod and the second inclined supporting rod are locked, so that the upper pressure plate keeps the set curvature.
When the inclined strut is connected with the support rod in a sliding mode, the support rod slides along the length direction of the support rod, the first inclined strut and the second inclined strut are assembled in the sliding groove in a sliding mode, locking bolts matched with the support rod are arranged on the first inclined strut and the second inclined strut respectively, and after the first inclined strut and the second inclined strut slide in place, the first inclined strut and the second inclined strut are locked through the locking bolts.
It should be understood that in this application embodiment, the distance that the top board can control and reciprocate through external sensor, in addition, when specifically using, can fix the spacing height of top board, also can not fix the compression interval and make the sample be in under the pressure of constant load. Specifically, when the limiting height of the upper pressure plate is fixed, the cross beam is locked and fixed through a locking bolt on the cross beam. The measuring device further includes a constant pressure device connected to the second adjustment assembly for applying a set load pressure to the upper platen when the sample is subjected to a constant load pressure. The constant pressure device can be an air cylinder or a hydraulic cylinder, the air cylinder and the hydraulic cylinder are fixedly connected with the cross beam and used for driving the cross beam to move downwards or upwards, and constant pressure can be provided when a test piece is measured.
In addition, in order to simulate the actual working environment of the test piece, the measuring device provided by the embodiment of the application is also matched with a separated sealed container, so that the test piece is subjected to a compression permanent deformation test under a high-temperature/low-temperature test medium. Illustratively, the measuring device further comprises a separate sealed container and an injection device. Wherein, the upper pressing plate and the lower pressing plate are wrapped by the separated sealed container. Specifically, disconnect-type sealed container includes two casings that can control involution, and wherein, two casings are when to the box, with top board and holding down plate parcel in the casing, and first adjustment subassembly and second adjustment subassembly can pass disconnect-type sealed container. And the sealed container is sealed with the first adjusting component and the second adjusting component to form a sealed space for wrapping the upper pressing plate and the lower pressing plate. The injection device is communicated with the split sealer and used for injecting a medium into the split sealer, and the medium is filled into the split sealed container, so that the real use environment of the test piece is simulated. The injection device may be a hydraulic pump or other device that can input media into the separate sealed container. When the medium is injected, the separated sealing container is provided with a corresponding exhaust port, and after the medium is injected, the exhaust port can be sealed through the sealing plug.
In the specific test process, the height of the material standard sample block is measured firstly, the compression amount is obtained through calculation, then the corresponding measuring device is found, and the upper compression plate and the lower compression plate are fixed for testing. The embodiment of the application can control the accurate movement of the upper compression device, and as an optional scheme, a scale can be arranged on the lower pressing plate and can be a scale adopted in the prior art. And the upper pressing plate and the lower pressing plate are kept in consistent radian with the sample by adjusting the first adjusting assembly and the second adjusting assembly.
As an optional scheme, for a sample (such as a leather cup) with a special-shaped structure, a tool for simulating the actual working condition can be installed on the upper pressing plate.
It can be seen through the above-mentioned description that the measuring device that this application embodiment provided can simulate sealing washer part operating condition and carry out compression set test, has following advantage: sampling on a sealing ring part for testing, wherein the temperature, medium and load can be adjusted according to the working environment of the part in the testing process, and the testing result truly reflects the compression permanent deformation performance of the sealing ring; the measuring device designed in the invention does not need to disassemble matched compression clamps according to the change of a sample, and the radian of the upper pressure plate and the lower pressure plate is controlled through the extension and the movement of the first adjusting assembly and the second adjusting assembly, so that the test process is simplified, and the test efficiency is greatly improved; and thirdly, the test process is simple and convenient to operate, the test method is scientific and reasonable, intelligent and accurate displacement control and parameter measurement can be realized, samples are taken from products, the processing time of standard sample blocks is saved, and the effectiveness of the detection result is ensured.
As shown in fig. 2, to facilitate understanding of the measurement apparatus provided in the embodiment of the present application, an embodiment of the present application further provides a measurement method, where the measurement method includes the following steps:
step 001: measuring the diameter and the wire diameter of the sealing ring of the experimental object;
specifically, the diameter and the wire diameter of the seal ring component to be tested are measured by a measuring instrument, which may be a measuring instrument commonly used in the prior art, and is not limited herein.
Step 002: selecting a sample with a set length from the sealing ring of the experimental object;
specifically, this sample is according to actual measurement needs to the object sealing washer of experiment is cut off and is taken off, thereby when detecting, but direct detection sample has improved the degree of accuracy that detects. In addition, the samples were conditioned at standard laboratory temperatures prior to testing; for elastomeric materials, they are placed in an aging oven for heat treatment. Specifically, the sample should be conditioned at standard laboratory temperature for 3-6 hours, such as 3 hours, 4 hours, 5 hours, 6 hours, etc. before testing. In addition, the elastomer material should be put into an aging oven with the temperature of 70 +/-5 ℃ for 30min to 1h for heat treatment.
Step 003: adjusting the curvatures of an upper pressure plate and a lower pressure plate of the measuring device according to the measured diameter and the line diameter of the experimental object sealing ring;
Specifically, the curvatures of the upper pressure plate and the lower pressure plate are respectively adjusted correspondingly through the first adjusting assembly and the second adjusting assembly until the curvatures are consistent with the curvature of the test piece. The specific adjustment manner refers to the related description in fig. 1, and is not described herein again.
Step 004: putting a sample into an upper pressure plate and a lower pressure plate, and compressing the upper pressure plate downwards to enable the compression rate of the sample to be within a set compression rate range;
specifically, the sample is placed into the lower pressing plate, then the upper pressing plate is driven to compress downwards through the second adjusting assembly, when the sample is compressed to the set compression ratio range, the upper pressing plate is locked, and the specific locking mode refers to the relevant description in fig. 1 and is not repeated herein.
The compressibility for the sample is generally between 10% and 25%.
As an optional step, before placing the sample, a layer of grease can be coated on the surface of the sample contacting the compression plate. Specifically, lubricating grease is coated on two surfaces of a sample, which are in contact with an upper pressing plate and a lower pressing plate; or the surfaces of the upper pressing plate and the lower pressing plate, which are contacted with the sample, are coated with lubricating grease.
In addition, for parts with variable assembly gaps, the compression load of the measuring device is optionally set to be unchanged, and the beam of the compression device of the constant pressure device is not locked after the sample is compressed. The specific manner refers to the related description in fig. 1, and is not described herein again.
Step 005: keeping the sample in a compressed state for a first set time;
specifically, the sample is kept in a compressed state by the measuring device, and specifically, the first set time may be 24h to 72h, such as 24h, 40h, 50h, 60h, 72h, and other different times.
In addition, for the test which needs to be carried out at high temperature or low temperature, after the sample is put into the upper pressing plate and the lower pressing plate, and the upper pressing plate is compressed and locked downwards, the measuring device is put into a test box with the set test temperature. Thus, the measuring device with the sample is placed into the test chamber with the test temperature for compression detection. Therefore, the real scene of the sample is simulated, and the detection result is improved.
Step 006: and installing a separated sealed container around the upper pressing plate and the lower compression plate, and injecting a test medium into the separated sealed container.
Specifically, for a part needing to be tested in a medium environment, a separated sealed container is arranged around a pressure plate filled with a sample, and the part is sealed after test media are injected; specifically, reference may be made to the related description in fig. 1, and details are not repeated here.
Step 007: and after the sample is taken down from the measuring device and the second set time is recovered, measuring the thickness of the sample in the compression direction, and when the thickness does not reach the set thickness, judging that the sealing ring of the experimental object does not reach the standard.
Specifically, after the test time is up, loosening the sample, recovering the sample at the standard laboratory temperature for 30min +/-3 min, measuring the height of the sample in the compression direction, and judging that the seal ring of the experimental object does not reach the standard if the height does not reach the set thickness.
Those of ordinary skill in the art will understand that: the discussion of any embodiment above is meant to be exemplary only, and is not intended to intimate that the scope of the disclosure, including the claims, is limited to these examples; features from the above embodiments, or from different embodiments, may also be combined, steps may be implemented in any order, and there are many other variations of the different aspects of one or more embodiments of the present description, as described above, which are not provided in detail for the sake of brevity.
In addition, well-known power/ground connections to Integrated Circuit (IC) chips and other components may or may not be shown within the provided figures for simplicity of illustration and discussion, and so as not to obscure one or more embodiments of the description. Furthermore, devices may be shown in block diagram form in order to avoid obscuring the understanding of one or more embodiments of the present description, and this also takes into account the fact that specifics with respect to implementation of such block diagram devices are highly dependent upon the platform within which the one or more embodiments of the present description will be implemented (i.e., specifics should be well within purview of one skilled in the art). Where specific details (e.g., circuits) are set forth in order to describe example embodiments of the disclosure, it should be apparent to one skilled in the art that one or more embodiments of the disclosure can be practiced without, or with variation of, these specific details. Accordingly, the description is to be regarded as illustrative instead of restrictive.
While the present disclosure has been described in conjunction with specific embodiments thereof, many alternatives, modifications, and variations thereof will be apparent to those skilled in the art in light of the foregoing description. For example, other memory architectures (e.g., dynamic ram (dram)) may use the embodiments discussed.
It is intended that the one or more embodiments of the present specification embrace all such alternatives, modifications and variations as fall within the broad scope of the appended claims. Therefore, any omissions, modifications, substitutions, improvements, and the like that may be made without departing from the spirit or scope of the disclosure are intended to be included within the scope of the disclosure.
Claims (12)
1. A method for testing the deformation performance of an automobile sealing ring part is characterized by comprising the following steps:
measuring the diameter and the wire diameter of the sealing ring of the experimental object;
selecting a sample with a set length from the experimental object sealing ring;
adjusting the curvatures of an upper pressure plate and a lower pressure plate of the measuring device according to the measured diameter and the measured linear diameter of the experimental object sealing ring;
putting the sample into the upper pressing plate and the lower pressing plate, and compressing the upper pressing plate downwards to enable the compression rate of the sample to be within a set compression rate range;
Keeping the sample in a compressed state for a first set time;
and after the sample is taken down from the measuring device, after the second set time is recovered, measuring the thickness of the sample in the compression direction, and when the thickness does not reach the set thickness, judging that the sealing ring of the experimental object does not reach the standard.
2. The method for testing the deformation performance of the automobile sealing ring part according to claim 1, further comprising the steps of coating lubricating grease on two surfaces of the test sample, which are in contact with the upper pressing plate and the lower pressing plate; or the like, or a combination thereof,
and coating lubricating grease on the surfaces of the upper pressing plate and the lower pressing plate, which are in contact with the test sample.
3. The method for testing the deformation performance of the automobile sealing ring part according to claim 1, further comprising the following steps: and after the sample is placed into the upper pressing plate and the lower pressing plate, and the upper pressing plate is compressed and locked downwards, the measuring device is placed into a test box with a set test temperature.
4. The method for testing the deformation performance of the automobile sealing ring part according to claim 1, further comprising the following steps: and placing the sample into the upper pressure plate and the lower pressure plate, compressing and locking the upper pressure plate downwards, installing a separated sealed container around the upper pressure plate and the lower pressure plate, and injecting a test medium into the separated sealed container.
5. The method for testing the deformation performance of the automobile sealing ring part according to any one of claims 1 to 4, further comprising the following steps:
conditioning the sample at standard laboratory temperature prior to testing; for elastomeric materials, they are placed in an aging oven for heat treatment.
6. The method for testing the deformation performance of the automobile sealing ring part according to claim 5, wherein the first set time is 24-72 hours.
7. The method for testing the deformation performance of the automobile sealing ring part according to claim 5, wherein the compression ratio is 10% -25%.
8. A measuring device is characterized by comprising a support, an upper pressure plate and a lower pressure plate which are oppositely arranged; a space for accommodating a test piece is formed between the upper pressure plate and the lower pressure plate;
the lower pressure plate is fixedly connected with the support through the first adjusting assembly, and the curvature of the lower pressure plate can be adjusted through the first adjusting assembly;
the device also comprises a second adjusting assembly which is connected with the support in a sliding mode and can be locked, and the second adjusting assembly is connected with the upper pressure plate and can adjust the curvature of the upper pressure plate.
9. The measurement device of claim 8, wherein the second adjustment assembly includes a cross beam slidably coupled to the support; a support rod fixed on the beam; the first group of diagonal brace rods and the second group of diagonal brace rods are arranged along the length direction of the support rods;
the first group of inclined supporting rods comprises two first inclined supporting rods, one end of each first inclined supporting rod is hinged with the upper pressure plate, and the other end of each first inclined supporting rod is connected with the corresponding supporting rod in a sliding mode and can be locked at a set position;
the second group of inclined supporting rods comprises two second inclined supporting rods, one end of each second inclined supporting rod is hinged with the upper pressure plate, and the other end of each second inclined supporting rod is connected with the supporting rod in a sliding mode and can be locked at a set position;
one end of the supporting rod, which is far away from the cross beam, is fixedly connected with the upper pressing plate.
10. The measuring device of claim 9, wherein the first adjusting assembly comprises a plurality of telescopic rods arranged along the length direction of the lower pressing plate, one end of each telescopic rod is fixedly connected with the support, and the other end of each telescopic rod is hinged with the lower pressing plate.
11. The measuring device according to any one of claims 8 to 10, further comprising a separate sealed container enclosing the upper platen and the lower platen, and an injection device; the injection apparatus is in communication with the split sealer and is for injecting a medium into the split sealer.
12. The measuring apparatus of claim 11, further comprising a constant pressure device coupled to the second trim component and configured to apply a set load pressure to the upper platen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210336551.XA CN114755006A (en) | 2022-03-31 | 2022-03-31 | Method and device for measuring deformation performance of automobile sealing ring part |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202210336551.XA CN114755006A (en) | 2022-03-31 | 2022-03-31 | Method and device for measuring deformation performance of automobile sealing ring part |
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