A device and method for detecting the compressive performance of magnesium alloy components

Abstract

The present invention discloses a device and a method for detecting the compressive performance of magnesium alloy components, relating to the technical field of component compressive performance testing, including: a loading system, which consists of a main frame and a loading device, and the main frame is the main framework for supporting the entire detection device; a pressure application end, the height of the pressure application end is changed by the driving of the loading device, the loading device controls the downward pressure of the pressure application end, and a pressure receiving end is arranged on the main frame platform to be centered with the pressure application end, and the pressure application end and the pressure receiving end cooperate to perform a compressive test on the component; a pressure detection matrix, which detects the changes at the pressure receiving end and / or the contact position between the pressure application end and the component when the pressure application end applies pressure to the component. The present invention performs a compressive test on magnesium alloy components. During the test process, the contact positions of the magnesium alloy components at the pressure application end and the pressure receiving end are obtained, and different stages of component deformation are determined according to the pressure change state.

Description

Technical Field

[0001] The present invention relates to the technical field of compressive performance testing of components, and specifically to a device and method for detecting the compressive performance of magnesium alloy components. Background Art

[0002] There are various magnesium alloy automotive parts. Structural parts (seat frames and front frames), high-temperature resistant parts (cylinder blocks), and moving parts (wheels) all share the common feature of withstanding low mechanical and chemical loads. Magnesium alloys have relatively high specific strength and good casting performance. Magnesium alloys have obvious advantages in terms of thermal conductivity, vibration damping performance, and damping capacity. And the compressive performance testing of magnesium alloy components is particularly important. Most of the existing compressive performance tests are realized through compressive performance testing machines.

[0003] Publication No. CN217211958U discloses a device for detecting the compressive performance of mechanical components, including a bracket. A recording board is arranged on one side of the bracket, and a threaded rod is installed at the top of the recording board, and an assembly block is arranged at the bottom of the threaded rod. This application is a variant of existing hydraulic equipment. By means of an assembly structure, the pressing plate is assembled and disassembled to make up for the problem that the pressing plate of the hydraulic equipment is not easy to replace after being damaged. Through this application, the compressive performance test of magnesium alloy components is no different from that of ordinary hydraulic equipment.

[0004] Publication No. CN116558967A further discloses a detector for the resistance strength of a crossbeam reinforcement plate in the processing of automotive components. This application provides a detector for the resistance strength of a crossbeam reinforcement plate in the processing of automotive components that can simulate the compressive performance test after the crossbeam is installed on the vehicle to improve the accuracy. It includes a frame, an electric slide rail, and a strength detector. Electric slide rails are connected to both the left and right sides inside the frame. A strength detector is connected between the electric slide rails through a slider. It also includes a positioning mechanism and an insertion mechanism. A positioning mechanism is arranged between the frame and the slider of the electric slide rail, and an insertion mechanism is arranged in the middle of the frame. The positioning frame pushes the crossbeam for positioning and alignment, and the insertion rod is inserted into the hole of the crossbeam to limit the crossbeam, simulating the installation of the crossbeam on the vehicle. In this way, the compressive performance test when the crossbeam is installed on the vehicle can be simulated, improving the accuracy.

[0005] The proposed detector for compressive strength performs the compressive performance test of the automotive crossbeam by simulating the installation environment of the automotive crossbeam and then applying pressure to the crossbeam.

[0006] Existing compressive property testing machines can evaluate the performance and durability of components under different loads by applying gradually increasing pressures. They can only determine the compressive properties under different loads and cannot determine the compressive change curves of complex parts. Moreover, by simulating the installation and use environment of components, they are only applicable to single types of parts, making it extremely inconvenient to conduct compressive property tests on components of multiple specifications and types. Summary of the Invention

[0007] One of the objectives of the present invention is to provide a device and method for detecting the compressive properties of magnesium alloy components, which can conduct compressive tests on magnesium alloy components of multiple specifications and types, obtain the pressure change curves during the compressive process of magnesium alloy components, and determine different deformation stages of magnesium alloy components.

[0008] To achieve the above objectives, the present invention is realized through the following technical solutions: A device for detecting the compressive properties of magnesium alloy components, comprising: a loading system, which consists of a main frame and a loading device. The main frame is the main framework supporting the entire detection device, placed on the ground with the main frame platform parallel to the ground. The loading device is used to apply pressure to the components.

[0009] It further includes: a pressure application end, whose height is changed by the driving of the loading device. The loading device controls the downward pressure of the pressure application end. A pressure receiving end is arranged on the main frame platform in alignment with the pressure application end. The pressure application end and the pressure receiving end cooperate to conduct compressive tests on the components.

[0010] A pressure detection matrix is arranged on the surface of the pressure receiving end and / or the pressure application end in contact with the component, to detect the changes at the contact positions between the pressure receiving end and / or the pressure application end and the component when the pressure application end applies pressure to the component. The pressure detection matrix obtains the pressures at the contact positions of the component with the pressure receiving end and / or the contact positions to determine the pressure change curve.

[0011] A swing-adjustable positioning frame is arranged between the loading device and the main frame. The positioning frame is in a C-shaped configuration and its swing angle can be manually adjusted. The positioning frame and the main frame are in a triangular position outside the pressure receiving end and the pressure application end.

[0012] A clamping assembly is arranged inside the positioning frame and is connected to the positioning frame and the main frame through a connecting assembly. The clamping assembly moves with the positioning frame. The clamping assembly has at least two force application directions after clamping the component, and the force application directions can be adjusted according to the change state of the pressure change curve.

[0013] A control terminal is used to control the detection device, can display the pressure change curve generated by the pressure detection matrix, and adjust the clamping state of the clamping assembly according to the pressure change curve.

[0014] In one or more embodiments of the present invention, the pressure detection matrix includes:

[0015] A pressure sensor is installed inside the pressure-receiving end and / or the pressure-applying end. The detection end of the pressure sensor faces the component, and the pressure distribution at different positions is monitored in real time.

[0016] A data acquisition unit is arranged inside the pressure-receiving end and / or the pressure-applying end. The data acquisition unit is connected to the pressure sensor and is arranged according to the position of the pressure sensor. When the pressure changes at different positions, the position corresponding to the pressure change is determined.

[0017] A processing unit obtains the pressure change at the contact position between the component and the pressure-receiving end and / or the pressure-applying end and draws a pressure change curve. The processing unit obtains the control instruction of the control terminal for the loading device and determines the applied pressure of the pressure-applying end.

[0018] In one or more embodiments of the present invention, both ends of the positioning frame are annularly arranged and are connected to the loading device and the main frame through bearings. The connecting component connects at least one clamping component to the main frame, and the remaining clamping components are connected to the positioning frame through the connecting component. The positioning frame swings to adjust the clamping position of the clamping component on the component.

[0019] In one or more embodiments of the present invention, the clamping component includes:

[0020] A clamping head is located at one end of the clamping component close to the component. At least two pressing plates for fitting towards the component are arranged inside the clamping head, and the number of pressing plates is the same as the number of force application directions of the clamping component on the component.

[0021] An elastic body is arranged at one end of the pressing plate close to the component. The elastic body contacts the component to avoid surface damage of the component during the clamping process.

[0022] A control unit is arranged inside the clamping head and is connected to the pressing plate. The control unit controls the movement of the pressing plate and contacts the component.

[0023] In one or more embodiments of the present invention, the control unit is hydraulically driven, and the state of the pressing plate is changed by the movement of the medium. The control unit includes:

[0024] A control head is connected to the pressing plate. A driving pipeline is arranged at the end of the control head facing away from the pressing plate. One end of the control head is inserted into the driving pipeline and is driven by the driving pipeline.

[0025] A hydraulic component controls the medium to enter the driving pipeline to drive the control head to move.

[0026] One end of the driving pipeline connected to the control head is provided with an installation sleeve. An electromagnetic ring is arranged inside the installation sleeve. One end of the control head inserted into the installation sleeve is provided with a magnet. The electromagnetic ring and the magnet cooperate to limit the position of the control head.

[0027] In one or more embodiments of the present invention, the control head includes:

[0028] The connecting rod is inserted into the installation sleeve and contacts the installation sleeve. A sealing ring is provided on the outer side of the connecting rod. A ring groove for limiting the sealing ring is provided inside the installation sleeve. The telescopic range of the connecting rod is located between the ring grooves.

[0029] A mounting head, threadedly mounted on the outside of the connecting rod, a swingable buckle is arranged on the outside of the mounting head, and the buckle is connected to the pressing plate;

[0030] The gusset plate can be swingably mounted on the outside of the mounting head. The mounting head is provided with an electromagnetic block magnetically attracting the gusset plate. When the gusset plate is attached to the electromagnetic block, the swing of the buckle is limited;

[0031] A card slot is arranged inside the buckle, and when the buckle plate is located inside the card slot, the swing position of the buckle is limited.

[0032] In one or more embodiments of the present invention, the interior of the elastic body is provided with a cavity, and the cavity is filled with gas to keep the pressure inside the cavity at a set value, an air pressure sensor is arranged at one end of the pressing plate away from the elastic body, the elastic body penetrates the pressing plate and extends to the side of the pressing plate where the air pressure sensor is installed, and the detection end of the air pressure sensor is connected to the cavity and detects the change of the gas pressure inside the cavity;

[0033] The pressure plate clamps the component to compress the elastic body, changing the gas pressure inside the cavity. The air pressure sensor determines the effect of the pressure plate on the deformation of the component based on the change in gas pressure inside the cavity.

[0034] In one or more embodiments of the present invention, the connection assembly includes:

[0035] The support rod is swingably mounted on the inner side of the positioning frame, and a segmented meshing block is arranged at the bottom of the positioning frame. Adjacent meshing blocks are connected by hand, and the connection position of the meshing blocks can be bent. A guide groove is arranged at one end of the meshing block that contacts the support rod, and a guide rail is arranged at a section of the support rod extending to the inside of the guide groove and is hinged to the guide rail;

[0036] A tensioning structure passes through the meshing block and determines a bending state of the meshing block by tensioning the meshing block;

[0037] The push rod is telescopically arranged between the clamping head and the positioning frame, and the two ends of the push rod are respectively hinged to the positioning frame and the clamping head.

[0038] In one or more embodiments of the present invention, the connection component further comprises:

[0039] A micro telescopic rod is arranged inside the support rod and is used to control the swing angle of the support rod;

[0040] The tensioning structure consists of a winding motor, a tensioning rope wound around the inner side of the winding wheel of the winding motor, and a positioning piece fixed to the outer side of the engagement block at the end. The winding motor controls the winding of the tensioning rope to change the state of the engagement block.

[0041] An embodiment of the present invention further provides a compressive property detection method for the above-mentioned magnesium alloy component compressive property detection device, including the following steps:

[0042] Determine the detection position of the compressive property of the component and place the component on the compression end;

[0043] The loading device drives the pressure application end to move, applies a certain pressure to the component, and ensures the stability of the component;

[0044] Adjust the position of the positioning frame so that the positioning frame corresponds to the clamping point of the component;

[0045] Adjust the clamping component through the connection component so that the clamping component approaches the component and clamps the component in at least two force application directions;

[0046] The pressure application end continues to apply pressure, determines the pressure change curve of the component through the pressure detection matrix, and adjusts the force application direction of the clamping component according to the compressed state of the component;

[0047] Output the pressure change curve to the control terminal for compressive property analysis.

[0048] Through the above technical solutions, the present invention has the following beneficial effects:

[0049] 1. The present invention conducts a compressive test on magnesium alloy components. During the test, the contact position between the pressure application end and the magnesium alloy component at the compression end is obtained, and different deformation stages of the component are determined according to the pressure change state. The clamping state of the magnesium alloy component is adjusted according to different stages of the magnesium alloy component to ensure the stability of the component.

[0050] 2. High-precision pressure sensors are configured at both the pressure application end and the compression end to monitor the pressure changes at different positions of the pressure application end and the compression end. The states of the component at the pressure application end and the compression end are determined through the pressure position and changes, and the pressure change curve presented by the component during the compression process can accurately reflect different deformation states of the component during the compression process.

[0051] 3. During the extrusion of magnesium alloy components, according to the change in the pressure detection position at the compression end, the position change of the magnesium alloy component after deformation can be determined, and the deformation amplitude of the component can be determined. Moreover, since the deformation of the component occurs in different stages after being compressed, the change state of the component is monitored at all times according to the change in the contact position between the component and the compression end.

[0052] 4. To avoid the problem that clamping the component during its deformation affects the deformation data of the component, resulting in inaccurate compressive performance data of the component, the component is contacted by an elastic member. When the deformation of the component affects the pressure inside the elastic member, the application direction of the force for clamping the component is adjusted to ensure the stability of the component without affecting the deformation data of the component.

[0053] Other features and advantages of the present invention will be described in the following specification, and some of them will become obvious from the specification or be understood by implementing the present invention. The objectives and other advantages of the present invention can be achieved and obtained through the structures specifically pointed out in the written specification and the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0054] Figure 1 is a perspective view of the present invention;

[0055] Figure 2 is a partial schematic view of the present invention;

[0056] Figure 3 is a schematic view of the installation position of the positioning frame of the present invention;

[0057] Figure 4 is a schematic view of the connection structure of the pressure application end and the pressure receiving end with the positioning frame of the present invention;

[0058] Figure 5 is a schematic view of the internal structure of the pressure receiving end of the present invention;

[0059] Figure 6 is a schematic view of the connection structure of a single positioning frame of the present invention;

[0060] Figure 7 is a schematic view of the connection component and the clamping component of the present invention;

[0061] Figure 8 is a schematic view of the combined bending structure of the engaging blocks of the present invention;

[0062] Figure 9 is an exploded view of the engaging blocks of the present invention;

[0063] Figure 10 is a schematic view of the connection structure between the engaging blocks and the clamping component of the present invention;

[0064] Figure 11 is a cross-sectional view of the internal structure of the clamping head of the present invention;

[0065] Figure 12 is a schematic view of the internal structure of the clamping head of the present invention;

[0066] Figure 13 is a schematic view of the mounting structure of the pressing plate of the present invention;

[0067] Figure 14 Cross-sectional view of the pressing plate mounting structure of the present invention;

[0068] Figure 15 Plan view of the pressing plate mounting structure of the present invention.

[0069] In the figure: 1 main frame, 2 loading device, 3 pressure application end, 4 pressure receiving end, 5 pressure detection matrix, 6 positioning frame, 7 connection assembly, 8 clamping assembly, 9 control terminal;

[0070] 51 pressure sensor, 52 processing unit;

[0071] 71 support rod, 72 meshing block, 73 guide groove, 74 guide rail, 75 ejector rod, 76 micro telescopic rod, 77 tensioning structure: 771 winding motor, 772 tensioning rope, 773 positioning piece;

[0072] 81 clamping head, 82 pressing plate, 83 elastic body, 84 control unit: 841 control head: 411 connecting rod, 412 sealing ring, 413 annular groove, 414 mounting head, 415 buckle, 416 clamping plate, 417 electromagnetic block, 418 clamping groove; 842 drive pipeline, 843 hydraulic component, 844 mounting sleeve, 845 electromagnetic ring, 846 magnet; 85 air pressure sensor. Specific embodiments

[0073] The following will disclose multiple embodiments of the present invention with the accompanying drawings. For the sake of clarity, many practical details will be described together in the following narrative. However, it should be understood that these practical details are not used to limit the present invention. That is to say, in some embodiments of the present invention, these practical details are not necessary. And if possible in implementation, the features of different embodiments can be applied interactively.

[0074] Unless otherwise defined, all terms (including technical and scientific terms) used herein have their ordinary meanings, which can be understood by those skilled in the art. Further, the definitions of the above terms in commonly used dictionaries should be interpreted as having the same meaning as in the related fields of the present invention. Unless specifically defined otherwise, these terms will not be interpreted as idealized or overly formal meanings.

[0075] The following explains the relationships and terms used in the present invention:

[0076] Parallel: The parallel defined in the present invention is not limited to absolute parallel. This definition of parallel can be understood as substantially parallel, allowing for non-absolute parallel situations caused by factors such as assembly tolerances, design tolerances, and the flatness of the structure plane. Small-angle range errors are allowed. For example, within an assembly error range of 10 degrees, it can be understood as a parallel relationship.

[0077] Vertical: The vertical defined in the present invention is not limited to an absolutely vertically intersecting (angle of 90 degrees) relationship. A relationship that is not absolutely vertically intersecting due to factors such as assembly tolerances, design tolerances, and the influence of structural flatness is allowed, and an error within a small angle range is allowed. For example, within an assembly error range of 80 degrees to 100 degrees, it can be understood as a vertical relationship.

[0078] Ground: The ground defined in the present invention is not limited to the ground of a certain material or region. It is only a platform on the surface for carrying the present invention, and stacking, tilting, and flatness changes are allowed. For example, a cement floor, a ceramic tile floor, a working platform, etc. can all be interpreted as the ground.

[0079] The above explanations do not fully cover the relationship definitions given in the present invention and only represent a part of the present invention.

[0080] The present invention provides a device for detecting the compressive performance of magnesium alloy parts, which is used to perform a compressive test on magnesium alloy parts, obtain the pressure change curve of the parts, and determine the compressive state of the parts at different stages.

[0081] Refer to Figure 1-2 , in an embodiment, the compressive performance detection device includes: a loading system, which is composed of a main frame 1 and a loading device 2. The main frame 1 is the main framework for supporting the entire detection device. The main frame 1 is placed on the ground and the platform of the main frame 1 is parallel to the ground. The loading device 2 is used to apply pressure to the parts; Exemplarily, the loading device 2 includes a hydraulic cylinder, a lead screw, a servo motor, etc.;

[0082] It further includes: a pressure application end 3, whose height is changed by the driving of the loading device 2. The loading device 2 controls the downward pressure of the pressure application end 3. A pressure receiving end 4 is arranged on the platform of the main frame 1 opposite to the pressure application end 3. The pressure application end 3 and the pressure receiving end 4 cooperate to perform a compressive test on the parts;

[0083] A pressure detection matrix 5 is arranged on the surface of the pressure receiving end 4 and / or the pressure application end 3 in contact with the parts to detect the change in the contact position between the pressure receiving end 4 and / or the pressure application end 3 and the parts when the pressure application end 3 applies pressure to the parts. The pressure detection matrix 5 obtains the pressure at the contact position of the parts with the pressure receiving end 4 and / or the contact position to determine the pressure change curve;

[0084] Refer to Figure 2-4 , a swing-adjustable positioning frame 6 is arranged between the loading device 2 and the main frame 1. The positioning frame 6 is in a C-shaped setting, and the swing angle of the positioning frame 6 can be manually adjusted. The positioning frame 6 and the main frame 1 are in a triangular position outside the pressure receiving end 4 and the pressure application end 3;

[0085] The clamping assembly 8 is arranged inside the positioning frame 6 and is connected to the positioning frame 6 and the main frame 1 through the connecting assembly 7. The clamping assembly 8 moves along with the positioning frame 6. The clamping assembly 8 has at least two force application directions after clamping the components, and the force application directions can be adjusted according to the change state of the pressure change curve.

[0086] The control terminal 9 is used to control the detection device, and can display the pressure change curve generated by the pressure detection matrix 5, and adjust the clamping state of the clamping assembly 8 according to the pressure change curve.

[0087] In an implementable manner, the pressure-receiving end 4 is detachably installed on the inner platform of the main frame 1. When the component is subjected to the compressive performance test, it is placed on the pressure-receiving end 4, and the loading device 2 is driven to move the pressure-applying end 3 downward to contact the component and apply pressure to the component.

[0088] During the process of the component being compressed, the pressure detection matrix 5 is used to determine the pressure change feedback from the component to the pressure-receiving end 4, and the pressure change curve during the compressive process of the component is determined according to the pressure change. The pressure change curve reflects the pressure change of the component from bending to fracture.

[0089] Among them, the clamping assembly 8 forms a clamping on the component to ensure the stability of the component. When the clamping assembly 8 clamps the component, at least two force application directions on the component are set. After the component is compressed and deformed, the switching of the force application direction can avoid affecting the deformation of the component and ensure the accuracy of the compressive performance detection of the component.

[0090] Refer to Figure 4-5 , in an embodiment, the pressure detection matrix 5 includes:

[0091] The pressure sensor 51 is installed inside the pressure-receiving end 4 and / or the pressure-applying end 3. The detection end of the pressure sensor 51 faces the component to monitor the pressure distribution at different positions in real time.

[0092] The data acquisition unit is arranged inside the pressure-receiving end 4 and / or the pressure-applying end 3. The data acquisition unit is connected to the pressure sensor 51 and is arranged according to the position of the pressure sensor 51. When the pressure changes at different positions, the position corresponding to the pressure change is determined.

[0093] The processing unit 52 obtains the pressure change at the contact position between the component and the pressure-receiving end 4 and / or the pressure-applying end 3 and draws the pressure change curve. The processing unit 52 obtains the control instruction of the control terminal 9 for the loading device 2 and determines the applied pressure of the pressure-applying end 3.

[0094] In an implementable manner, based on the existing testing machine, the pressing end 3 and the receiving end 4 are improved to better feedback the pressure change of the component during the compression process. According to the compression pressure change curve of the component, the deformation of the component can be more detailedly reflected, and more complete component compression data can be obtained.

[0095] The processing unit 52 combines the control instruction of the control terminal 9 for the loading device 2 to obtain the applied pressure of the pressing end 3 on the component. Combining with the pressure change curve of the component, it can more detailedly output the pressure change data, so as to analyze the compression performance of the component according to the applied pressure and the pressure change curve.

[0096] Refer to Figure 4 and Figure 6 , in an embodiment, both ends of the positioning frame 6 are annularly arranged and are connected to the loading device 2 and the main frame 1 through bearings. The connecting component 7 connects at least one clamping component 8 to the main frame 1, and the remaining clamping components 8 are connected to the positioning frame 6 through the connecting component 7. The positioning frame 6 swings to adjust the clamping position of the clamping component 8 on the component.

[0097] In an implementable manner, two positioning frames 6 are provided. The two positioning frames 6 drive the two clamping components 8 to change positions. The clamping component 8 connected to the main frame 1 is restricted, and the other two clamping components 8 clamp the component to form three clamping points, ensuring the stability of the clamping component 8.

[0098] Among them, the clamping components 8 are all independently controlled by the connecting component 7. The clamping components 8 play a role in stabilizing the component. When the pressing end 3 moves towards the receiving end 4, it prevents the component from detaching from the detection device. After the pressing end 3 contacts the component and applies a fixed pressure, on the basis of ensuring the stability of the component, the clamping component 8 is used to clamp the component.

[0099] Due to the fixed pressure applied by the pressing end 3, the order in which the clamping component 8 contacts and applies pressure to the component will not change the position of the component, further ensuring the stability of the component. Clamping the component at multiple points also ensures the stable state of the component during the extrusion process.

[0100] Refer to Figure 11-12 , in an embodiment, the clamping component 8 includes:

[0101] A clamping head 81, located at one end of the clamping component close to the component. At least two pressing plates 82 for fitting towards the component are arranged inside the clamping head 81. The number of pressing plates 82 is the same as the number of force application directions of the clamping component 8 on the component;

[0102] One end of the pressing plate 82 is provided with an elastomer 83 near one end of the component, and the elastomer 83 contacts the component to avoid surface damage of the component during the clamping process;

[0103] A control unit 84 is configured inside the clamping head 81 and connected to the pressing plate 82. The control unit 84 controls the movement of the pressing plate 82 to contact the component.

[0104] In an implementable manner, a plurality of pressing plates 82 are provided, and the force application directions corresponding to each pressing plate 82 are inconsistent. During the stable clamping of the component, by changing the force application direction of the pressing plate 82, the deformation of the component during the clamping process is avoided. Since most components have relatively complex structures, in order to prevent the pressing plate 82 from scratching the surface of the component during the clamping process, an elastomer 83 is provided outside the pressing plate 82 to protect the component.

[0105] Refer to Figure 12 , in an embodiment, the control unit 84 is hydraulically driven, and the state of the pressing plate 82 is changed by the movement of the medium. The control unit 84 includes:

[0106] A control head 841 is connected to the pressing plate 82. A driving pipeline 842 is provided at one end of the control head 841 away from the pressing plate 82. One end of the control head 841 is inserted into the inside of the driving pipeline 842 and is driven by the driving pipeline 842;

[0107] A hydraulic component 843 controls the medium to enter the inside of the driving pipeline 842 to drive the control head 841 to move;

[0108] One end of the driving pipeline 842 connected to the control head 841 is provided with a mounting sleeve 844. An electromagnetic ring 845 is provided inside the mounting sleeve 844. One end of the control head 841 inserted into the inside of the mounting sleeve 844 is configured with a magnet 846. The electromagnetic ring 845 and the magnet 846 cooperate to limit the position of the control head 841.

[0109] In an implementable manner, the pressure change of the medium is used to drive the control head 841 to expand and contract, so that the control head 841 can change the position of the pressing plate 82, and the state change of the pressing plate 82 enables it to fit the outer wall of the component.

[0110] Optionally, the hydraulic component 843 is a combination of a hydraulic pump and a hydraulic tank. The hydraulic pump mobilizes the movement of the medium in the hydraulic tank, so that the medium enters the driving pipeline 842 from the hydraulic tank or enters the inside of the hydraulic tank from the driving pipeline 842, thereby driving the control head 841 to move.

[0111] Another option is that the hydraulic component 843 is the cooperation of a telescopic rod and a hydraulic tank. The telescopic rod expands and contracts the volume of the hydraulic tank, thereby changing the position of the medium.

[0112] Refer to Figure 13-15, in one embodiment, the control head 841 includes:

[0113] A connecting rod 411 is inserted inside the mounting sleeve 844 and contacts the mounting sleeve 844. A sealing ring 412 is sleeved outside the connecting rod 411. A ring groove 413 for restricting the sealing ring 412 is correspondingly arranged inside the mounting sleeve 844. The telescopic range of the connecting rod 411 is between the ring grooves 413;

[0114] A mounting head 414 is threadedly mounted outside the connecting rod 411. A swingable buckle 415 is arranged outside the mounting head 414, and the buckle 415 is connected to the pressing plate 82;

[0115] A clamping plate 416 is swingably mounted outside the mounting head 414. An electromagnet 417 is arranged inside the mounting head 414 to magnetically attract the clamping plate 416. When the clamping plate 416 fits against the electromagnet 417, the swing of the buckle 415 is restricted;

[0116] A clamping groove 418 is arranged inside the buckle 415. When the clamping plate 416 is located inside the clamping groove 418, the swing position of the buckle 415 is restricted.

[0117] In an implementable manner, the swing state of the buckle 415 is restricted by the clamping plate 416, so that the pressing plate 82 can fit at different angles. Under the connection of the control head 841, the pressing plate 82 can present multiple angular changes. When the clamping plate 416 restricts the buckle 415 and prevents the buckle 415 from swinging, the axis of the connecting rod 411 is perpendicular to the pressing plate 82. When the clamping plate 416 on one side disengages from the buckle 415, the buckle 415 can swing in this direction.

[0118] In addition, after the electromagnet 846 disengages from the magnetic attraction of the clamping plate 416, in order to make the clamping plate 416 disengage from the clamping groove 418 faster, a spring for supporting the clamping plate 416 is arranged between the clamping plate 416 and the mounting head 414, and the spring supports the clamping plate 416 to disengage from the clamping groove 418.

[0119] Refer to Figure 13 , in one embodiment, the inside of the elastomer 83 is provided with a cavity, and the cavity is filled with gas to keep the pressure inside the cavity at a set value. A pressure sensor 85 is arranged at one end of the pressing plate 82 facing away from the elastomer 83. The elastomer 83 penetrates through the pressing plate 82 and extends to the side of the pressing plate 82 where the pressure sensor 85 is installed. The detection end of the pressure sensor 85 is communicated with the cavity and detects the change in the gas pressure inside the cavity;

[0120] The pressing plate 82 clamps the component to compress the elastomer 83, changing the gas pressure change inside the cavity. The pressure sensor 85 determines the influence of the pressing plate 82 on the deformation of the component based on the gas pressure change inside the cavity.

[0121] In an implementable manner, the pressing plate 82 clamps the component to restrict the position of the component, and the component deforms under the extrusion of the pressing end 3. The deformation of the component directly corresponds to the compressive performance of the component. To avoid the pressing plate 82 restricting the position of the component and affecting the deformation of the component, therefore, when the state of the component changes and affects the pressure in the internal cavity of the elastomer 83, the elastomer 83 is extruded by the deformation state of the component to determine the pressing plate 82 that affects the deformation of the component.

[0122] Adjust the force application direction of the pressing plate 82 clamping the component according to the pressing plate 82 that affects the deformation of the component.

[0123] Refer to Figure 7-10 , in an embodiment, the connection assembly 7 includes:

[0124] The support rod 71 is swingably installed inside the positioning frame 6. The bottom of the positioning frame 6 is provided with segmented meshing blocks 72. The adjacent meshing blocks 72 are connected end to end, and the connection position of the meshing blocks 72 is bendable. A guide groove 73 is opened at one end of the meshing block 72 in contact with the support rod 71, and a guide rail 74 is configured on a section of the support rod 71 extending into the guide groove 73 and is hinged to the guide rail 74;

[0125] The tensioning structure 77 penetrates the meshing block 72 to determine the bending state of the meshing block 72 by tensioning the meshing block 72;

[0126] The ejector rod 75 is telescopically arranged between the clamping head 81 and the positioning frame 6, and both ends of the ejector rod 75 are hinged to the positioning frame 6 and the clamping head 81 respectively.

[0127] In an implementable manner, by using the segmented meshing block 72, when the tension is changed, a pull on the meshing block 72 is formed, enabling the meshing block 72 to change its state. Under the restriction of the support rod 71, the position of a part of the meshing block 72 is ensured to be stable, and the other part is adjusted according to the state of the tensioning structure 77, so that the position of the clamping head 81 can be changed to facilitate its corresponding adjustment according to the structure of the component. One end of the meshing block 72 is connected to the clamping head 81 and the clamping head 81 can swing relative to the meshing block 72.

[0128] Refer to Figure 6-7 and Figure 9 , in an embodiment, the connection assembly 7 further includes:

[0129] The micro telescopic rod 76 is arranged inside the support rod 71 and is used to control the swing angle of the support rod 71;

[0130] The tensioning structure 77 consists of a winding motor 771, a tensioning rope 772 wound around the inner side of the winding wheel of the winding motor 771, and a positioning piece 773 fixed to the outer side of the outermost engaging block 72. The winding motor 771 controls the winding of the tensioning rope 772 to change the state of the engaging block 72.

[0131] In an implementable manner, the support rod 71 is controlled by the micro telescopic rod 76 to ensure the stability of the support rod 71. The stability of the engaging block 72 is ensured by the stability of the support rod 71. The change of the tension state is adjusted by the tensioning structure 77. According to the tension state, the stable support for the clamping head 81 is ensured.

[0132] The embodiment of the present invention also provides a compressive property detection method for the above-mentioned magnesium alloy component compressive property detection device, including the following steps:

[0133] Determine the position for detecting the compressive property of the component, and place the component on the compression end 4;

[0134] The loading device 2 drives the pressing end 3 to move, applies a certain pressure to the component, and ensures the stability of the component;

[0135] Adjust the position of the positioning frame 6 so that the positioning frame 6 corresponds to the clamping point of the component;

[0136] Adjust the clamping component 8 through the connecting component 7, make the clamping component 8 approach the component, and clamp the component in at least two force application directions;

[0137] The pressing end 3 continuously applies pressure, determines the pressure change curve of the component through the pressure detection matrix 5, and adjusts the force application direction of the clamping component 8 according to the compressed state of the component;

[0138] Output the pressure change curve to the control terminal 9 for compressive property analysis.

[0139] Although the present invention is disclosed in combination with the above embodiments, it is not intended to limit the present invention. Any person skilled in this art can make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, the protection scope of the present invention should be defined by the appended claims.

Claims

1. A device for testing the compressive performance of magnesium alloy parts, characterized in that: Comprising: A loading system, which consists of a main frame and a loading device. The main frame is the main framework that supports the entire detection device. The main frame is placed on the ground and the main frame platform is parallel to the ground. The loading device is used to apply pressure to the parts. It further comprises: a pressure application end, whose height is changed by the driving of the loading device. The loading device controls the downward pressure of the pressure application end. A pressure receiving end is arranged on the main frame platform in alignment with the pressure application end. The pressure application end and the pressure receiving end cooperate to conduct a compressive test on the parts. A pressure detection matrix is arranged on the surface of the pressure receiving end and / or the pressure application end in contact with the parts to detect the change at the contact position between the pressure receiving end and / or the pressure application end and the parts when the pressure application end applies pressure to the parts. The pressure detection matrix obtains the pressure change curve by determining the pressure at the contact position between the parts and the pressure receiving end and / or the contact position. A swing-adjustable positioning frame is arranged between the loading device and the main frame. The positioning frame is in a C-shaped setting and its swing angle can be manually adjusted. The positioning frame and the main frame are in a triangular position outside the pressure receiving end and the pressure application end. A clamping assembly is arranged inside the positioning frame and is connected to the positioning frame and the main frame through a connection assembly. The clamping assembly moves along with the positioning frame. The clamping assembly has at least two force application directions after clamping the parts, and the force application directions can be adjusted according to the change state of the pressure change curve. Both ends of the positioning frame are in a circular setting and are connected to the loading device and the main frame through bearings. The connection assembly connects at least one clamping assembly to the main frame, and the remaining clamping assemblies are connected to the positioning frame through the connection assembly. The positioning frame swings to adjust the clamping position of the clamping assembly on the parts. A control terminal is used to control the detection device, can display the pressure change curve generated by the pressure detection matrix, and adjust the clamping state of the clamping assembly according to the pressure change curve.

2. A device for detecting the compressive properties of magnesium alloy parts according to claim 1, characterized in that: The pressure detection matrix includes: Pressure sensors are installed inside the pressure receiving end and / or the pressure application end. The detection ends of the pressure sensors face the parts to monitor the pressure distribution at different positions in real time. A data acquisition unit is arranged inside the pressure receiving end and / or the pressure application end. The data acquisition unit is connected to the pressure sensors and is arranged according to the positions of the pressure sensors. When the pressure changes at different positions, it determines the positions corresponding to the pressure changes. A processing unit obtains the pressure changes at the contact positions between the parts and the pressure receiving end and / or the pressure application end and draws a pressure change curve. The processing unit obtains the control instruction of the control terminal for the loading device and determines the applied pressure of the pressure application end.

3. A magnesium alloy component compression performance testing device according to claim 2, characterized in that: The clamping assembly includes: Clamping heads are located at one end of the clamping assembly close to the parts. At least two pressing plates for fitting towards the parts are arranged inside the clamping heads. The number of pressing plates is the same as the number of force application directions of the clamping assembly on the parts. One end of the pressing plate close to the parts is provided with an elastic body, and the elastic body contacts the parts to avoid surface damage of the parts during the clamping process. A control unit is arranged inside the clamping head and is connected to the pressing plates. The control unit controls the movement of the pressing plates to contact the parts.

4. A device for detecting the compressive properties of magnesium alloy parts according to claim 3, characterized in that: The control unit is hydraulically driven and changes the state of the pressing plates through the movement of the medium. The control unit includes: A control head is connected to the pressing plates. A driving pipeline is arranged at the end of the control head facing away from the pressing plates. One end of the control head is inserted into the driving pipeline and is driven by the driving pipeline. Hydraulic components, control the medium to enter the drive pipeline to drive the control head to move; One end of the drive pipeline connected to the control head is provided with a mounting sleeve, an electromagnetic ring is arranged inside the mounting sleeve, and a magnet is arranged at one end of the control head inserted into the mounting sleeve. The electromagnetic ring and the magnet cooperate to limit the position of the control head.

5. A device for detecting the compressive properties of magnesium alloy parts according to claim 4, characterized in that: The control head includes: The connecting rod is inserted into the installation sleeve and contacts the installation sleeve. The outer side of the connecting rod is sleeved on the sealing ring. The inner side of the installation sleeve is correspondingly provided with an annular groove for limiting the sealing ring. The telescopic range of the connecting rod is located between the annular grooves. A mounting head, threadedly mounted on the outside of the connecting rod, a swingable buckle is arranged on the outside of the mounting head, and the buckle is connected to the pressing plate; The gusset plate can be swingably mounted on the outside of the mounting head. The mounting head is provided with an electromagnetic block magnetically attracting the gusset plate. When the gusset plate is attached to the electromagnetic block, the swing of the buckle is limited; A card slot is arranged inside the buckle, and when the buckle plate is located inside the card slot, the swing position of the buckle is limited.

6. A device for detecting the compressive properties of magnesium alloy parts according to claim 5, characterized in that: The elastic body has a cavity inside, and the cavity is filled with gas to keep the pressure inside the cavity at a set value. An air pressure sensor is arranged at one end of the pressing plate away from the elastic body. The elastic body penetrates the pressing plate and extends to the side of the pressing plate where the air pressure sensor is installed. The detection end of the air pressure sensor is connected to the cavity and detects the change of the gas pressure inside the cavity. The pressure plate clamps the component to compress the elastic body, changing the gas pressure inside the cavity. The air pressure sensor determines the effect of the pressure plate on the deformation of the component based on the change in gas pressure inside the cavity.

7. A device for detecting the compressive properties of magnesium alloy parts according to claim 6, characterized in that: The connection components include: The support rod is swingably mounted on the inner side of the positioning frame, and a segmented meshing block is arranged at the bottom of the positioning frame. Adjacent meshing blocks are connected by hand, and the connection position of the meshing blocks can be bent. A guide groove is arranged at one end of the meshing block that contacts the support rod, and a guide rail is arranged at a section of the support rod extending to the inside of the guide groove and is hinged to the guide rail; A tensioning structure passes through the meshing block and determines a bending state of the meshing block by tensioning the meshing block; The push rod is telescopically arranged between the clamping head and the positioning frame, and the two ends of the push rod are respectively hinged to the positioning frame and the clamping head.

8. The device for detecting the compressive properties of magnesium alloy parts according to claim 7, characterized in that: The connection components also include: A micro telescopic rod is arranged inside the support rod and is used to control the swing angle of the support rod; The tensioning structure consists of a winding motor, a tensioning rope wound around the inner side of the winding wheel of the winding motor, and a positioning piece fixed to the outer side of the engagement block at the end. The winding motor controls the winding of the tensioning rope to change the state of the engagement block.

9. A method for testing compressive performance, used in the device for testing compressive performance of magnesium alloy parts according to any one of claims 1 to 8, characterized in that: The following steps are involved: Determine the compressive performance test position of the parts and place the parts on the pressure-bearing end; The loading device drives the pressure end to move, exerting a certain pressure on the parts to ensure the stability of the parts; Adjust the position of the positioning frame so that it corresponds to the clamping point of the component; The clamping assembly is adjusted by the connecting assembly so that the clamping assembly is close to the component and the component is clamped in at least two force application directions; The pressure-applying end applies pressure continuously, drives the pressure change curve of the component through the pressure detection matrix, and adjusts the force direction of the clamping assembly according to the pressure state of the component; The pressure change curve is output to the control terminal for pressure resistance performance analysis.

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