Detection tool and detection apparatus

Abstract

This disclosure provides a testing fixture and testing equipment. The testing fixture includes a positioning frame and a pressure-applying component. The positioning frame has a base and a guide sleeve located above the base. The pressure-applying component is vertically and movably coupled to the guide sleeve to form a pressure area with the base. The pressure-applying component also has a through-hole allowing an operating tool or measuring tool to pass through. The testing equipment includes the testing fixture and a testing assembly. The testing assembly includes a torque measuring instrument and a height measuring instrument. The advantage of this configuration is that the testing fixture can apply pressure to the part under test through the pressure-applying component, allow a torque measuring instrument to pass through the through-hole to detect torque inside the part, and allow a height measuring instrument to be placed on top of the part.

Description

Technical Field

[0001] This disclosure relates to the field of testing technology, and in particular to testing fixtures and testing equipment. Background Technology

[0002] The differential is a core component of a vehicle's transmission system, its function being to allow the two drive shafts to rotate at different speeds, thereby optimizing the vehicle's power performance. For four-wheel drive vehicles, the differential can flexibly adjust the power output to all four wheels under complex road conditions, ensuring stable vehicle operation. To ensure the durability of the differential, it is typically necessary to measure its total height under a load of 5 kN ± 150 N, and also measure its torque at 50 rpm while under pressure. However, related technologies usually use a press to apply pressure to the differential, but existing pressure testing machines are inconvenient for operators to perform subsequent inspections after pressure application. Summary of the Invention

[0003] In view of the shortcomings of the prior art described above, the purpose of this disclosure is to provide testing fixtures and testing equipment to solve the problems in the related technologies.

[0004] The first aspect of this disclosure provides a testing fixture, comprising:

[0005] The positioning frame includes a base and a guide sleeve located above the base;

[0006] The pressure-applying component is movable and height-adjustable to the guide sleeve to form a pressure-applying area with the seat body;

[0007] The pressure-applying component also has a through section that allows operating or testing instruments to pass through.

[0008] In an embodiment of the first aspect, the pressure-applying element is implemented as a threaded sleeve.

[0009] In an embodiment of the first aspect, the guide sleeve is detachably fixedly connected to the positioning frame; and / or, the guide sleeve is vertically and flexibly disposed on the positioning frame.

[0010] In an embodiment of the first aspect, the positioning frame includes a base plate, a top plate, and at least one connecting body disposed between the base plate and the top plate; the seat is disposed on the base plate; and an avoidance hole is formed on the top plate for the bottom end of the guide sleeve to pass through.

[0011] In an embodiment of the first aspect, the housing has a receiving portion for accommodating a pressure sensor that is force-transmittably coupled to the part to be measured.

[0012] In an embodiment of the first aspect, a first force transmission element is further included, which is connected to the part to be measured and the pressure sensor respectively.

[0013] In an embodiment of the first aspect, a second force transmission member is further included, which is connected to the top of the part to be tested and the pressure-applying member, respectively.

[0014] A second aspect of this disclosure provides a testing device, comprising:

[0015] The testing fixture;

[0016] The detection components include torque detectors and height detectors.

[0017] In a second embodiment, the torque testing device includes a torque bar and a torque detector connected to the torque bar; the torque bar is a rotating shaft that passes through the through portion and engages with the part to be tested.

[0018] In an embodiment of the first aspect, the height measuring instrument includes a measuring block, a dial indicator, and a calibration component; the measuring block is disposed in the through portion and abuts against the top of the part to be measured, the dial indicator is placed in the guide sleeve and the probe abuts against the measuring block; the calibration component is used to calibrate the dial indicator before height measurement.

[0019] As described above, this disclosure provides a testing fixture and a testing device. The testing fixture includes a positioning frame and a pressure-applying component. The positioning frame has a base and a guide sleeve located above the base. The pressure-applying component is vertically and movably coupled to the guide sleeve to form a pressure area with the base. The pressure-applying component also has a through-hole allowing an operating tool or measuring tool to pass through. The testing device includes the testing fixture and a testing assembly. The testing assembly includes a torque measuring instrument and a height measuring instrument. The advantage of the above configuration is that the testing fixture can apply pressure to the part to be tested through the pressure-applying component, allow a torque measuring instrument to pass through the through-hole to detect torque inside the part, and allow a height measuring instrument to be placed on top of the part. Attached Figure Description

[0020] Figure 1 The diagram shown is a structural schematic of the part to be tested in an embodiment of this disclosure;

[0021] Figure 2 The diagram shown is a schematic representation of the detection fixture in an embodiment of this disclosure;

[0022] Figure 3 The diagram shown is a schematic representation of the structure of the testing fixture combined with the part to be tested in an embodiment of this disclosure.

[0023] Figure 4 The diagram shown is a cross-sectional view of the combination of the testing fixture and the part to be tested in an embodiment of this disclosure;

[0024] Figure 5The diagram shown is a cross-sectional view of the cooperation between the testing fixture and the torque testing instrument in an embodiment of this disclosure;

[0025] Figure 6 The diagram shown is a cross-sectional view of the detection fixture and height detection instrument in an embodiment of this disclosure.

[0026] Reference numerals: 100 for testing fixture; 101 for pressure zone; 110 for positioning frame; 111 for base; 1111 for bearing part; 1112 for receiving part; 1113 for pressure sensor; 112 for guide sleeve; 1121 for support part; 1122 for guide part; 113 for top plate; 114 for bottom plate; 115 for connector; 120 for pressure application part; 121 for through part; 130 for first force transmission part; 140 for second force transmission part; 200 for testing assembly; 210 for torque testing instrument; 211 for torque bar; 220 for height testing instrument; 221 for measuring block; 222 for dial indicator; 223 for mounting base; 20 for part to be tested; 21 for force receiving part. Detailed Implementation

[0027] The following specific examples illustrate the implementation of this disclosure. Those skilled in the art can easily understand other advantages and effects of this disclosure from the information disclosed herein. This disclosure can also be implemented or applied through other different specific embodiments, and various details in this disclosure can be modified or changed according to different viewpoints and application modules without departing from the spirit of this disclosure. It should be noted that, unless otherwise specified, the embodiments and features in the embodiments of this disclosure can be combined with each other.

[0028] The embodiments of this disclosure will now be described in detail with reference to the accompanying drawings, so that those skilled in the art to which this disclosure pertains can readily implement it. This disclosure may be embodied in many different forms and is not limited to the embodiments described herein.

[0029] In this disclosure, references to terms such as "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., indicate that a specific feature, structure, material, or characteristic represented in connection with that embodiment or example is included in at least one embodiment or example of this disclosure. Furthermore, the specific features, structures, materials, or characteristics represented may be combined in any suitable manner in any one or a group of embodiments or examples. Moreover, without contradiction, those skilled in the art can combine and integrate the different embodiments or examples represented in this disclosure, as well as the features of those different embodiments or examples.

[0030] Furthermore, the terms "first" and "second" are used for illustrative purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one of that feature. In the representation of this disclosure, "a set" means two or more, unless otherwise explicitly specified.

[0031] For the purpose of clarity, devices unrelated to the description are omitted, and the same or similar components throughout the specification are given the same reference numerals.

[0032] Throughout this specification, when it is said that a device is "connected" to another device, this includes not only "direct connection" but also "indirect connection" by placing other components in between. Furthermore, when it is said that a device "comprises" a certain constituent element, unless otherwise stated otherwise, this does not exclude other constituent elements, but rather implies that other constituent elements may be included.

[0033] While the terms first, second, etc., are used in some examples herein to refer to various elements, these elements should not be limited by these terms. These terms are used only to distinguish one element from another. For example, first interface and second interface, etc., are used. Furthermore, as used herein, the singular forms “a,” “an,” and “the” are intended to also include the plural forms unless the context indicates otherwise. It should be further understood that the terms “comprising,” “including,” indicate the presence of the stated feature, step, operation, element, module, item, kind, and / or group, but do not exclude the presence, occurrence, or addition of one or more other features, steps, operations, elements, modules, items, kinds, and / or groups. The terms “or” and “and / or” as used herein are interpreted as inclusive, or mean any one or any combination thereof. Thus, “A, B, or C” or “A, B, and / or C” means “any one of: A; B; C; A and B; A and C; B and C; A, B, and C.” Exceptions to this definition will only occur if the combination of elements, functions, steps, or operations is inherently mutually exclusive in some way.

[0034] The technical terms used herein are for reference only to specific embodiments and are not intended to limit the scope of this disclosure. The singular form used herein includes the plural form unless the statement explicitly indicates otherwise. The word "comprising" as used in this specification means to specify a particular characteristic, region, integer, step, operation, element, and / or component, and does not exclude the presence or addition of other characteristics, regions, integers, steps, operations, elements, and / or components.

[0035] Although not explicitly defined, all terms, including technical and scientific terms used herein, shall have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure pertains. Terms defined in commonly used dictionaries shall be further interpreted as having a meaning consistent with the relevant technical literature and the message of the present disclosure, and shall not be over-interpreted as having an ideal or overly formulaic meaning unless otherwise defined.

[0036] The differential is a core component of a vehicle's transmission system, its function being to allow the two drive shafts to rotate at different speeds, thereby optimizing the vehicle's power performance. For four-wheel drive vehicles, the differential can flexibly adjust the power output to all four wheels under complex road conditions, ensuring stable vehicle operation. To ensure the durability of the differential, it is typically necessary to measure its total height under a load of 5 kN ± 150 N, and also measure its torque at 50 rpm while under pressure. However, related technologies usually use a press to apply pressure to the differential, but existing pressure testing machines are inconvenient for operators to perform subsequent inspections after pressure application.

[0037] Based on the above problems, the testing fixture can apply pressure to the part to be tested through the pressure-applying component, allow the torque measuring instrument to pass through the through-part to detect the torque inside the part, and place the height measuring instrument on top of the part.

[0038] Figure 1 The diagram shown is a structural schematic of the part to be tested in an embodiment of this disclosure. Figure 2 The diagram shown is a schematic diagram of the detection tooling in an embodiment of this disclosure. Figure 3 The diagram shown is a schematic diagram of the combination of the testing fixture and the part to be tested in an embodiment of this disclosure. Figure 4 The diagram shown is a cross-sectional view illustrating the combination of the testing fixture and the part to be tested in an embodiment of this disclosure. Figure 1 , Figure 2 , Figure 3 and Figure 4 In the example, the testing fixture 100 includes a positioning frame 110 and a pressure-applying component 120. The positioning frame 110 has a base 111 and a guide sleeve 112 located above the base 111. The pressure-applying component 120 is movably coupled to the guide sleeve 112 to cooperate with the base 111 to form a pressure area 101. The pressure-applying component 120 also has a through portion 121 that allows operating or measuring instruments to pass through.

[0039] The advantages of the above configuration are that the testing fixture 100 can apply pressure to the part 20 to be tested through the pressure applying member 120, allow the torque measuring instrument to pass through the through part 121 to perform torque detection inside the part, and allow the height measuring instrument to be placed on top of the part 20 to be tested.

[0040] For example, the part under test 20 is implemented as a differential.

[0041] Exemplarily, the base 111 has a support portion 1111 that matches the bottom shape of the part to be tested 20, and the guide sleeve 112 is configured to match the top shape of the part to be tested 20. For example, the top and bottom of the part to be tested 20 are both circular, and both the support portion 1111 and the guide sleeve 112 are implemented with a circular cross-section. In other embodiments, the top and bottom of the part to be tested 20 are implemented as rectangles, or one is rectangular and the other is circular, and this is not a limitation.

[0042] For example, the guide sleeve 112 includes a support portion 1121 formed at the top and a guide portion 1122 formed at the bottom, and the outer diameter of the support portion 1121 is larger than the outer diameter of the guide portion 1122.

[0043] For example, the guide sleeve 112 is detachably disposed on the positioning frame 110.

[0044] For example, the positioning frame 110 includes a base plate 114, a top plate 113, and at least one connecting body 115 disposed between the base plate 114 and the top plate 113. The seat 111 is disposed on the base plate 114; the top plate 113 has a clearance hole for the bottom end of the guide sleeve 112 to pass through. The clearance hole is adapted to the outer diameter of the guide portion 1122. In this way, when the guide sleeve 112 is inserted into the clearance hole, the top plate 113 can contact the support portion 1121 and provide support for the guide sleeve 112.

[0045] In this embodiment, the top plate 113 and the bottom plate 114 are implemented in a triangular shape. Preferably, three connectors 115 are implemented and distributed at the corners of the top plate 113 and the bottom plate 114. In other embodiments, the number of connectors 115 can be adjusted according to the shape of the top plate 113 and the floor, and is not limited thereto.

[0046] As a further example, the support portion 1121 is threadedly connected to the top plate 113. For example, the support portion 1121 is formed with a through hole for the screw to pass through, and the top plate 113 is formed with a threaded hole for threaded connection with the screw.

[0047] Exemplarily, the pressure-applying member 120 is implemented as a threaded sleeve. That is, the pressure-applying member 120 is threadedly connected to the inner wall of the guide sleeve 112. For example, the inner wall of the guide sleeve 112 has an internal thread, and the outer wall of the pressure-applying member 120 has an external thread that mates with the internal thread. Those skilled in the art will understand that, firstly, by rotating the pressure-applying member 120, it can be moved downwards on the guide sleeve 112 to abut against the top of the part to be tested 20, thereby creating pressure on the part to be tested 20. Secondly, due to the self-locking property of the thread, the pressure-applying member 120 can maintain pressure on the part to be tested 20.

[0048] As a further example, the pressure-applying member 120 is provided with a groove for a tool such as a wrench to be rotated and engaged with the pressure-applying member 120.

[0049] It should be noted that before the part to be tested 20 is placed in the pressure area 101, the distance between the guide sleeve 112 and the base 111 is greater than the height of the part to be tested 20. For example, the guide sleeve 112 may not be located in the clearance hole, or there may be a gap between the support portion 1121 and the top plate 113. The purpose of the above arrangement is to create space on the positioning frame 110 to facilitate the placement of the part to be tested 20 on the base 111. After the part to be tested 20 is placed in the base 111, the guide sleeve 112 is placed in the clearance hole, and after the top of the part to be tested 20 is inserted into the guide sleeve 112, the guide sleeve 112 is then fixedly connected to the top plate 113 by a screw. In this way, the positioning of the part to be tested 20 is achieved by the upper and lower arranged base 111 and the guide sleeve 112.

[0050] As a further example, the inner diameter of the guide sleeve 112 is adapted to the outer diameter of the top of the part to be tested 20, and the inner diameter of the support portion 1111 is adapted to the outer diameter of the bottom of the part to be tested 20. The advantage of the above arrangement is that it can avoid unnecessary shaking of the part to be tested 20 between the guide sleeve 112 and the seat 111, thereby affecting subsequent testing.

[0051] exist Figure 2 In the example, the base 111 has a receiving portion 1112 for accommodating a pressure sensor 1113 that is force-transmittably coupled to the part under test 20. Preferably, the receiving portion 1112 is coaxial with the part under test 20, so that the pressure on the pressure sensor 1113 in the receiving portion 1112 can be more uniform.

[0052] For example, the side wall of the seat 111 has a clearance groove for threading a wire harness, such as the wire harness electrically connected to the pressure sensor 1113.

[0053] exist Figure 4 In the example, the detection fixture 100 further includes a first force transmitter 130. The first force transmitter 130 is connected to both the part to be tested 20 and the pressure sensor 1113. Exemplarily, the first force transmitter 130 is implemented as a plate and its dimensions are adapted to the bottom dimensions of the part to be tested 20. Those skilled in the art will understand that, as... Figure 4 As shown, when the bottom cross-section of the part under test 20 is annular, the bottom of the part under test 20 cannot effectively transmit force to the pressure sensor 1113. In this case, the first force transmission member 130 can effectively transmit the pressure on the part under test 20 to the pressure sensor 1113. In other embodiments, if the bottom of the part under test 20 is a complete plane, the first force transmission member 130 is not required.

[0054] To improve the stability of the first force transmission component 130 and the pressure sensor 1113, the first force transmission component 130 and the pressure sensor 1113 are engaged.

[0055] exist Figure 4 In this example, the testing fixture 100 further includes a second force transmission member 140. The second force transmission member 140 is connected to both the top of the part to be tested 20 and the pressure-applying member 120. Those skilled in the art will understand that the second force transmission member 140 can both protect the top of the part to be tested 20 from being crushed and evenly transmit force to the part to be tested 20. Exemplarily, the second force transmission member 140 is implemented in a ring shape so that the height measuring instrument can pass through the hollow area and engage with the force-receiving portion 21 of the part to be tested 20.

[0056] In this embodiment, the top and bottom of the part to be tested 20 are coaxial. In other embodiments, the top and bottom of the part to be tested 20 may not be coaxial, and the positions of the seat 111 and the guide sleeve 112 are adjusted according to the shape of the part to be tested 20, but are not limited thereto.

[0057] Figure 5 The diagram shown is a cross-sectional view of the cooperation between the testing fixture and the torque testing instrument in an embodiment of this disclosure. Figure 6 The diagram shown is a cross-sectional view illustrating the cooperation between the detection fixture and the height detection instrument in an embodiment of this disclosure. Figure 5 and Figure 6 In this example, a second embodiment of the present disclosure provides a detection device, including the detection fixture 100 and the detection component 200, wherein the detection component 200 includes a torque detection instrument 210 and a height detection instrument 220.

[0058] Exemplarily, the torque testing device 210 includes a torque bar 211 and a torque detector (not shown in the figure) connected to the torque bar 211; the torque bar 211 passes through the through portion 121 and engages with the force-receiving portion 21 of the part to be tested 20. For example, the force-receiving portion 21 is implemented as a shaft in a differential, and the end of the torque bar 211 that engages with the force-receiving portion 21 forms a locking opening for engaging with the shaft. The size of the locking opening is adapted to the size of the shaft.

[0059] Exemplarily, the height detection instrument 220 includes a measuring block 221, a measuring element 222, and a calibration element (not shown in the figure); the measuring block 221 is disposed on the through portion 121 and abuts against the top of the part to be measured 20, and the measuring element 222 is placed on the guide sleeve 112 with its probe abutting against the measuring block 221. The calibration element is used to calibrate the measuring element 222 before height measurement.

[0060] In this embodiment, the measuring element 222 is implemented as a dial indicator. In other embodiments, the measuring element 222 may also be implemented as a ruler.

[0061] For example, the measuring element 222 is mounted on a mounting base 223, which is configured to have a top opening in the guide sleeve 112 and to have a fitting portion for insertion into the guide sleeve 112.

[0062] When testing the part to be tested 20, the part to be tested 20 is first placed in the testing fixture 100, and pressure is applied to the part to be tested 20 by rotating the pressure applying member 120. When the pressure on the part to be tested 20 is detected by the pressure sensor 1113 to reach a predetermined value (e.g., 5000N±150N), the pressure is stopped and the pressure value is maintained for subsequent torque testing at 50rp / m.

[0063] When measuring height, the measuring block 221 is placed inside the through portion 121 and on the upper surface of the second force transmission member 140. The mounting base 223 is then fitted into the guide sleeve 112 so that the probe of the measuring member 222 (dial indicator) abuts against the upper surface of the measuring block 221. The difference between the reading of the pointer of the measuring member 222 and the reading at calibration is checked to see if it is within the tolerance range. It should be noted that before testing, the height is calibrated using the calibration member, following the same calibration process as described above. This test item checks whether the dimensional change of the part 20 under pressure conforms to the standard. After the test is completed, the parts are removed sequentially.

[0064] When testing torque, the torque bar 211 is passed through the through portion 121 of the pressure-applying member 120 and inserted into the part to be tested 20, engaging with its force-receiving portion 21. After connecting the torque detector to the torque bar 211, the torque of the part to be tested 20 under pressure can be detected by rotating the torque bar 211. After the test is completed, the parts are removed one by one.

[0065] In summary, this disclosure provides a testing fixture and a testing device. The testing fixture includes a positioning frame and a pressure-applying component. The positioning frame has a base and a guide sleeve located above the base. The pressure-applying component is vertically and movably coupled to the guide sleeve to form a pressure area with the base. The pressure-applying component also has a through-hole allowing an operating tool or measuring tool to pass through. The testing device includes the testing fixture and a testing assembly. The testing assembly includes a torque measuring instrument and a height measuring instrument. The advantage of the above configuration is that the testing fixture can apply pressure to the part to be tested through the pressure-applying component, allow a torque measuring instrument to pass through the through-hole to detect torque inside the part, and allow a height measuring instrument to be placed on top of the part.

[0066] The above embodiments are merely illustrative of the principles and effects of this disclosure and are not intended to limit this disclosure. Any person skilled in the art can modify or alter the above embodiments without departing from the spirit and scope of this disclosure. Therefore, all equivalent modifications or alterations made by those skilled in the art without departing from the spirit and technical concept disclosed in this disclosure should still be covered by the protection scope of this disclosure.

Claims

1. A testing fixture, characterized in that, include: The positioning frame includes a base and a guide sleeve located above the base; The pressure-applying component is movable and height-adjustable to the guide sleeve to form a pressure-applying area with the seat body; The pressure-applying component also has a through section that allows operating or testing instruments to pass through.

2. The testing fixture according to claim 1, characterized in that, The pressure-applying element is implemented as a threaded sleeve.

3. The testing fixture according to claim 1, characterized in that, The guide sleeve is detachably and fixedly connected to the positioning frame; and / or, the guide sleeve is vertically and flexibly disposed on the positioning frame.

4. The testing fixture according to claim 1, characterized in that, The positioning frame includes a base plate, a top plate, and at least one connecting body disposed between the base plate and the top plate; the seat is disposed on the base plate; and an avoidance hole is formed on the top plate for the bottom end of the guide sleeve to pass through.

5. The testing fixture according to claim 1, characterized in that, The housing contains a receiving portion for accommodating a pressure sensor that is force-transmittably coupled to the part to be tested.

6. The testing fixture according to claim 5, characterized in that, It also includes a first force transmission component, which is connected to the part to be tested and the pressure sensor respectively.

7. The testing fixture according to claim 1, characterized in that, It also includes a second force transmission component, which is connected to the top of the part to be tested and the pressure application component, respectively.

8. A testing device, characterized in that, include: The testing fixture as described in any one of claims 1-7; The detection components include torque detectors and height detectors.

9. The detection device according to claim 8, characterized in that, The torque testing device includes a torque bar and a torque detector connected to the torque bar; the torque bar is a rotating shaft that passes through the through portion and engages with the part to be tested.

10. The detection device according to claim 8, characterized in that, The height measuring instrument includes a measuring block, a dial indicator, and a calibration component; the measuring block is located in the through portion and abuts the top of the receiving part, the dial indicator is placed in the guide sleeve and the probe abuts the measuring block; the calibration component is used to calibrate the dial indicator before height measurement.

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