Arc spring end face verticality detection device and detection method

Abstract

The invention relates to the technical field of spring detection, and particularly discloses an arc-shaped spring end face perpendicularity detection device and detection method.The arc-shaped spring end face perpendicularity detection device comprises a supporting seat, a clamping seat is rotationally arranged on the supporting seat, an arc-shaped groove is formed in the clamping seat, and a positioning pin is arranged at one end of the inner bottom wall of the arc-shaped groove; the supporting seat is provided with an angle sensor, the angle sensor is located on the rotating path of the clamping seat, the end, close to the positioning pin, of the arc-shaped groove is matched with a standard part, and the width of the arc-shaped groove is gradually increased from the end, away from the positioning pin, of the positioning pin to the end, away from the positioning pin, of the arc-shaped groove. And an adjusting mechanism for adjusting the width of the arc-shaped groove is arranged on the clamping seat. The groove width of the arc-shaped groove is adjusted through the adjusting mechanism, the to-be-detected piece is clamped in a free state and a standard state, and the perpendicularity of the to-be-detected piece in the free state and the perpendicularity of the to-be-detected piece in the standard state are detected respectively.

Description

Technical Field

[0001] The present application relates to the technical field of spring detection, and in particular to a device and method for detecting the verticality of an arc-shaped spring end face. Background Art

[0002] Arc springs are specially designed elastic elements with arc-shaped features in their structure or application. They are primarily used in components such as dual-mass flywheels, clutches, and transmissions. Arc spring perpendicularity testing is the process of detecting the orthogonal deviation between the arc spring end face and a reference plane (such as the flywheel mounting surface). This ensures axial symmetry within the annular space in which the arc spring is installed, preventing localized stress concentration or abnormal torsional vibration transmission caused by tilted installation.

[0003] In the related art, a Chinese patent with publication number CN113624104B proposes a device for detecting the angle and verticality of an arc spring, comprising a base, a rotating platform provided on the base, a spring clamp seat structure provided on the rotating platform, a verticality detection structure provided on one side of the spring clamp seat structure, and an angle detection structure provided on the other side of the spring clamp seat. When performing a verticality test, the limit pin is removed, the pull rod is pulled, the standard part is placed in the spring seat, the rotating platform is rotated counterclockwise, the standard part presses the verticality detection part, the first hand wheel is turned to adjust the position of the verticality detection part and the standard part, and then the position of the first slide rail seat is fixed and the sensor is reset. Then, the standard part is removed and the arc spring to be measured is placed, the left end face of the spring is exposed 3-4 turns from the spring seat, the pull rod is released, the rotating platform is rotated counterclockwise, the end face of the arc spring is connected to the verticality detection part, and the data on the instrument display is read.

[0004] Regarding the above-mentioned related technologies, the inventors believe that there are the following defects: the verticality test of the arc spring requires the test piece to be placed in the spring clamp seat structure. If there is a small error between the curvature of the test piece and the curvature of the standard piece, the test piece will be forcibly bent into a state with the same curvature as the standard piece. At this time, the error in the verticality of the end face of the test piece is relatively large; and if only the arc groove of the spring clamp seat is expanded, the test piece will be difficult to clamp, resulting in a large error. Summary of the Invention

[0005] In order to improve the problem of large verticality error caused by curvature error during spring detection, the present application provides a device and method for detecting the verticality of the end face of an arc spring.

[0006] The present application provides a device and method for detecting the verticality of the end face of an arc spring, which adopts the following technical solutions: A device and method for detecting the verticality of the end face of an arc spring include a support seat, and are characterized in that: a clamping seat is rotatably arranged on the support seat, an arc groove is provided on the clamping seat, a positioning pin is provided at one end of the inner bottom wall of the arc groove, an angle sensor is provided on the support seat, and the angle sensor is located on the rotation path of the clamping seat, the end of the arc groove close to the positioning pin is adapted to the standard part, the width of the arc groove gradually increases from one end of the positioning pin to the end away from the positioning pin, and an adjustment mechanism for adjusting the width of the arc groove is provided on the clamping seat.

[0007] By adopting the above technical solution, the standard part is first placed in the arc groove of the clamping seat, and the standard part is pre-positioned by the positioning pin and the end of the arc groove close to the positioning pin. The groove width of the arc groove is adjusted to match the standard part by the adjustment mechanism, and then the clamping seat is rotated until the standard part is in contact with the angle sensor, and the angle sensor data at this time is recorded as zero; then after the standard part is removed, the test piece is placed in the arc groove, and the groove width of the arc groove is adjusted to match the groove width of the standard part by the adjustment mechanism, and the clamping seat is rotated until the test piece is in contact with the angle sensor, and this is recorded as the verticality value of the arc of the test piece in the standard state; then the clamping seat is retracted to separate the test piece from the angle sensor, and then the groove width of the arc groove is adjusted to match the state of the test piece by the adjustment mechanism. At this time, the test piece is in a free state and is positioned by the arc groove, and then the clamping seat is rotated until the test piece is in contact with the angle sensor, and this is recorded as the verticality value of the test piece in the free state, which facilitates the staff to obtain the verticality of the test piece in various states.

[0008] Optionally, a receiving groove is provided on the side wall of the arc-shaped groove, and the adjustment mechanism includes an adjustment bag arranged in the receiving groove, a push-pull plate connected to the adjustment bag, an extrusion block fixed to the bottom wall of the receiving groove, a filling layer arranged in the adjustment bag, a driving component for driving the push-pull plate to move, and a control component for controlling the hardness of the filling layer. The adjustment bag extends to both sides of the push-pull plate. When the adjustment bag is entirely located in the receiving groove, the part of the adjustment bag located at the end of the push-pull plate away from the spring is tightly pressed against the extrusion block; when the filling layer is in a high hardness state and the adjustment bag extends out of the receiving groove, the curvature of the side of the adjustment bag close to the spring is adapted to the curvature of the standard part.

[0009] By adopting the above technical solution, when it is necessary to detect the verticality of the workpiece to be tested in the standard state, the push-pull plate is driven by the driving component to move into the accommodating groove, and the hardness of the filling layer is lowered by the control component. When the adjustment bag is squeezed by the extrusion block, the filling layer in the adjustment bag located at the end of the push-pull plate away from the workpiece to be tested moves toward the end close to the workpiece to be tested, so as to fully fill the cavity of the adjustment bag close to the end of the workpiece to be tested, and then the hardness of the filling layer is increased by the control component to make the adjustment bag in a high hardness state. Finally, the push-pull plate is driven by the driving component to move in the direction close to the workpiece to be tested. At this time, the side walls of the two adjustment bags close to each other form a groove adapted to the standard part, and the verticality of the workpiece to be tested in the standard state can be detected by rotating the clamping seat. Then, when it is necessary to detect the verticality of the workpiece to be tested in its natural state, the hardness of the filling layer is lowered by controlling the price. At this time, the arc spring tends to move to the free state, thereby causing the adjustment bag and the filling layer in the adjustment bag to be squeezed and deformed by the workpiece to be tested. Then, the hardness of the filling layer is increased again by controlling the price, so that the adjustment bag is in a high hardness state. At this time, the adjustment bag supports the workpiece to be tested in its natural state. Finally, the clamping seat is rotated to make the workpiece to be tested fit with the angle sensor to detect the verticality of the workpiece to be tested in its natural state.

[0010] Optionally, the filling layer is magnetorheological fluid, the control element is a magnetic rod provided at both ends of the adjustment bag, and the ends of the magnetic rods at both ends of the same adjustment bag that are close to each other are of opposite polarity.

[0011] By adopting the above technical solution, when the filling layer needs to be hardened, the magnetorheological fluid can be made into a solid-like state by simply passing magnetism through the magnetic rod, and the adjustment bag is supported by the filling layer. When the filling layer needs to be softened, the magnetic field of the magnetic rod can be disconnected, and the magnetorheological fluid is in a fluid state, which facilitates the deformation of the adjustment bag and the filling layer inside the adjustment bag.

[0012] Optionally, the bag body of the adjustment bag comprises a magnetic conductive layer, a connecting layer and a magnetic blocking layer from the inside to the outside.

[0013] By adopting the above technical solution, the three-layer structure design of the adjustment bag is adopted, and the inner magnetic conductive layer and the magnetorheological fluid form a closed magnetic circuit, thereby reducing the leakage of the magnetic field. When the test piece is made of a magnetic conductive material, the outer magnetic resistance layer further blocks the magnetic flux lines of the magnetic conductive layer from entering the test piece through its high magnetic resistance, thereby reducing the leakage of the filling layer. The middle connecting layer is used to connect the magnetic conductive layer and the magnetic resistance layer, and further improve the magnetic resistance of the magnetic field leakage of the magnetic conductive layer.

[0014] Optionally, a plurality of magnetic rods are provided on the inner side of the adjustment bag close to the push-pull plate at intervals along the direction of the push-pull plate.

[0015] By adopting the above technical solution, the high magnetic permeability of the magnetizing rods strengthens the magnetic flux lines passing through the filling layer and reduces the magnetic flux lines entering the magnetic conductive layer, thereby improving the utilization rate of the magnetic field. At the same time, multiple magnetizing rods also effectively enhance the overall hardness of the filling layer when it becomes solid-like.

[0016] Optionally, a partition plate is provided in the adjustment bag above the push-pull plate, and a plurality of through holes are provided on the partition plate.

[0017] By adopting the above technical solution, when the filling layer is in a solid-like state, the partition plate and the through hole further increase the difficulty of the filling layer on the side of the partition plate close to the test piece entering the cavity on the side of the partition plate away from the test piece, thereby further improving the stability of the adjustment bag when fixing the test piece.

[0018] Optionally, the driving assembly includes a piston rod fixedly connected to an end of the push-pull plate away from the workpiece to be tested, and an air pipe provided on the clamping seat and plugged into the piston rod.

[0019] By adopting the above technical solution, when it is necessary to drive the push-pull plate to move toward the side close to the workpiece to be tested, air is inflated into the air pipe to enable the piston rod to push the push-pull plate to move. Conversely, air is inhaled into the air pipe to drive the push-pull plate to move away from the workpiece to be tested through the piston rod.

[0020] A method for detecting the verticality of an arc spring end face comprises the following steps: S1. Data calibration and zeroing: Place the standard part into the arc groove, adjust the slot width of the arc groove to match the standard part, rotate the clamping seat until the standard part fits the angle sensor, and record the data at this time as zero; S2. Standard state detection of the test piece: adjust the width of the arc slot, place the test piece into the arc slot, adjust the slot width to match the test piece in its natural state, then rotate the clamping seat until the test piece fits the angle sensor. The angle sensor data at this time is recorded as the verticality of the test piece in its standard state. S3. Detection of the free state of the test piece: Keep the test piece in the arc groove, adjust the slot width to match the standard part, make the curvature of the test piece equal to that of the standard part, and finally rotate the clamping seat until the test piece fits the angle sensor. The angle sensor data at this time is recorded as the verticality of the test piece in its natural state.

[0021] In summary, this application includes at least one of the following beneficial technical effects: 1. Place the workpiece to be tested into the arc groove, and adjust the groove width of the arc groove to match the groove width of the standard part through the adjustment mechanism, rotate the clamping seat until the workpiece to be tested is in contact with the angle sensor, and record this as the verticality value of the curvature of the workpiece to be tested in the standard state; then retract the clamping seat to separate the workpiece to be tested from the angle sensor, and then use the adjustment mechanism to adjust the groove width of the arc groove to match the state of the workpiece to be tested. At this time, the workpiece to be tested is in a free state and is positioned by the arc groove, and then rotate the clamping seat until the workpiece to be tested is in contact with the angle sensor, and record this as the verticality value of the workpiece to be tested in the free state, which makes it easier for staff to determine the verticality of the workpiece to be tested in various states. When a workpiece to be tested with a defective curvature is bent to the standard curvature, if the verticality of the workpiece to be tested is just qualified at this time, it is easy to avoid staff from misjudging the unqualified workpiece to be tested as a qualified part. At the same time, it is also easy for staff to determine whether the unqualified workpiece to be tested was caused by the curvature processing or the end face processing during the previous processing; 2. When the filling layer needs to be hardened, the magnetorheological fluid can be made solid by simply passing magnetism through the magnetic rod. At this time, the adjustment bag is supported by the filling layer. When the filling layer needs to be softened, the magnetic field of the magnetic rod can be disconnected. At this time, the magnetorheological fluid is in a fluid state, which facilitates the deformation of the adjustment bag and the filling layer inside the adjustment bag, resulting in faster adjustment speed and higher detection efficiency. 3. The three-layer structure of the regulating bag enables the inner magnetic permeable layer and the magnetorheological fluid to form a closed magnetic circuit, thereby reducing magnetic field leakage. When the test object is made of magnetic permeable material, the outer magnetic resistance layer further blocks the magnetic flux lines of the magnetic permeable layer from entering the test object through its high magnetic resistance, thereby reducing magnetic leakage from the filling layer. The middle connecting layer is used to connect the magnetic permeable layer and the magnetic resistance layer, and further improve the magnetic resistance of the magnetic permeable layer to prevent magnetic field leakage. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a schematic diagram of the overall structure of the test piece and the standard piece in this application; Figure 2 It is a schematic diagram of the overall structure of an embodiment of the present application; Figure 3 It is along Figure 2 Schematic diagram of the cross-sectional structure along the AA line; Figure 4 yes Figure 3 Schematic diagram of the enlarged portion B.

[0023] Figure numerals: 1. Support seat; 11. Clamping seat; 12. Arc groove; 13. Positioning pin; 14. Angle sensor; 2. Adjustment mechanism; 21. Adjustment bag; 22. Push-pull plate; 23. Extrusion block; 24. Drive assembly; 241. Piston rod; 242. Air pipe; 3. Receiving groove; 4. Magnetic rod; 5. Partition plate; 51. Through hole; 61. Partition to be tested; 62. Standard part. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-4 This application is described in further detail.

[0025] Example 1

[0026] The embodiment of the present application discloses a device for detecting the verticality of the end face of an arc spring. Figure 1 and Figure 2 The device for detecting the verticality of the end face of an arc spring includes a support base 1, on which a clamping base 11 is rotatably provided. The clamping base 11 is in a split arrangement connected by threads, so that different types of clamping bases 11 can be easily replaced. An arc groove 12 is provided on the clamping base 11, and a positioning pin 13 is provided at one end of the inner bottom wall of the arc groove 12. An angle sensor 14 is provided on the support base 1, and the angle sensor 14 is located on the rotation path of the clamping base 11. The end of the arc groove 12 close to the positioning pin 13 is adapted to the standard part 62. The width of the arc groove 12 gradually increases from one end of the positioning pin 13 to the end away from the positioning pin 13. The clamping base 11 is provided with an adjustment mechanism 2 for adjusting the width of the arc groove 12.

[0027] First, place the standard part 62 in the arc groove 12 of the clamping seat 11, pre-position the standard part 62 through the positioning pin 13 and the end of the arc groove 12 close to the positioning pin 13, adjust the slot width of the arc groove 12 to match the standard part 62 through the adjustment mechanism 2, and then rotate the clamping seat 11 until the standard part 62 is in contact with the angle sensor 14. Note that the data of the angle sensor 14 is zero at this time. Then, after taking out the standard part 62, put the test piece 61 into the arc groove 12, and adjust the slot width of the arc groove 12 to match the slot width of the standard part 62 through the adjustment mechanism 2, and rotate the clamping seat 11 to the standard part 62. The measuring piece 61 is fitted with the angle sensor 14, and this is recorded as the verticality value of the arc of the measuring piece 61 in the standard state; then the clamping seat 11 is retracted to separate the measuring piece 61 from the angle sensor 14, and then the groove width of the arc groove 12 is adjusted by the adjustment mechanism 2 to adapt to the state of the measuring piece 61. At this time, the measuring piece 61 is in a free state and is positioned by the arc groove 12, and then the clamping seat 11 is rotated until the measuring piece 61 is fitted with the angle sensor 14. This is recorded as the verticality value of the measuring piece 61 in the free state, which makes it easier for the staff to obtain the verticality of the measuring piece 61 in various states.

[0028] Reference Figure 2 、 Figure 3 and Figure 4The side wall of the arc-shaped groove 12 is provided with a receiving groove 3, and the adjusting mechanism 2 includes an adjusting bag 21 arranged in the receiving groove 3, a push-pull plate 22 connected to the adjusting bag 21, an extrusion block 23 fixed to the bottom wall of the receiving groove 3, a filling layer arranged in the adjusting bag 21, a driving component 24 for driving the push-pull plate 22 to move, and a control component for controlling the hardness of the filling layer. The filling layer is magnetorheological fluid, and the control component is a magnetic rod arranged at both ends of the adjusting bag 21. The magnetic rod is connected to an external electromagnet, and the ends of the magnetic rods at both ends of the same adjusting bag 21 are opposite in polarity. The adjusting bag 21 extends to both sides of the push-pull plate 22. When the adjusting bag 21 is completely located in the receiving groove 3, the part of the adjusting bag 21 located at the push-pull plate 22 away from the spring is pressed against the extrusion block 23; when the filling layer is in a high hardness state and the adjusting bag 21 extends out of the receiving groove 3, the curvature of the side of the adjusting bag 21 close to the spring is adapted to the curvature of the standard part 62.

[0029] When it is necessary to detect the verticality of the workpiece to be tested 61 in the standard state, the push-pull plate 22 is driven to move into the accommodating groove 3 by the driving component 24, and the magnetization of the magnetic rod is stopped to lower the hardness of the filling layer. When the adjustment bag 21 is squeezed by the extrusion block 23, the filling layer in the adjustment bag 21 located at the end of the push-pull plate 22 away from the workpiece to be tested 61 moves toward the end close to the workpiece to be tested 61 to fully fill the cavity of the adjustment bag 21 close to the end of the workpiece to be tested 61, and then the magnetic rod is magnetized to increase the hardness of the filling layer, so that the adjustment bag 21 is in a high hardness state. Finally, the push-pull plate 22 is driven by the driving component 24 to move in the direction close to the workpiece to be tested 61. At this time, the side walls of the two adjustment bags 21 close to each other form a groove adapted to the standard part 62, and the verticality of the workpiece to be tested 61 in the standard state can be detected by rotating the clamping seat 11. Then, when it is necessary to detect the verticality of the test piece 61 in its natural state, the magnetic rod is stopped from being magnetized to lower the hardness of the filling layer. At this time, the arc spring tends to move toward the free state, thereby causing the adjustment bag 21 and the filling layer in the adjustment bag 21 to be squeezed and deformed by the test piece 61. Then, the magnetic rod is magnetized again to increase the hardness of the filling layer, so that the adjustment bag 21 is in a high hardness state. At this time, the adjustment bag 21 supports the test piece 61 in its natural state. Finally, by rotating the clamping seat 11 to make the test piece 61 fit with the angle sensor 14, the verticality of the test piece 61 in its natural state can be detected.

[0030] Reference Figure 4 The bag body of the adjustment bag 21 is composed of a magnetic conductive layer, a connecting layer and a magnetic resistance layer from the inside to the outside. The magnetic conductive layer can be a ferrite film or a Permalloy film, the connecting layer is made of silicone or polyurethane, and the magnetic resistance layer can be a high magnetic resistance material such as copper and aluminum. In this application, the magnetic conductive layer and the magnetic resistance layer are attached to the connecting layer through a hot pressing bonding process to ensure that the magnetic conductive layer is in close contact with the magnetorheological fluid during deformation.

[0031] The three-layer structure design of the regulating bag 21 enables the inner magnetic conductive layer and the magnetorheological fluid to form a closed magnetic circuit, thereby reducing magnetic field leakage. When the test piece 61 is made of a magnetic conductive material, the outer magnetic resistance layer further blocks the magnetic flux lines of the magnetic conductive layer from entering the test piece 61 through its high magnetic resistance, thereby reducing magnetic leakage of the filling layer. The middle connecting layer is used to connect the magnetic conductive layer and the magnetic resistance layer, and further improve the magnetic resistance of the magnetic field leakage of the magnetic conductive layer.

[0032] Reference Figure 3 and Figure 4 , a plurality of magnetizing rods 4 are arranged at intervals along the direction of the push-pull plate 22 on the inner side of the adjustment bag 21 near the push-pull plate 22, and a partition plate 5 is arranged above the push-pull plate 22 in the adjustment bag 21, and a plurality of through holes 51 are opened on the partition plate 5. The high magnetic permeability of the magnetizing rods 4 strengthens the magnetic flux lines passing through the filling layer and reduces the magnetic flux lines entering the magnetic conductive layer, thereby improving the utilization rate of the magnetic field. At the same time, the plurality of magnetizing rods 4 also effectively enhances the overall hardness of the filling layer when it becomes a solid-like state. When the magnetorheological fluid is in a solid-like state, the partition plate 5 and the through holes 51 further increase the difficulty for the magnetorheological fluid on the side of the partition plate 5 close to the test piece 61 to enter the cavity on the side of the partition plate 5 away from the test piece 61, so as to further improve the stability of the adjustment bag 21 when fixing the test piece 61.

[0033] In other feasible embodiments, the filling layer can also be replaced with a phase change material such as paraffin, and the control components are respectively a heating rod and a cooling tube provided in the adjustment bag 21. When the hardness of the filling layer needs to be increased, the temperature in the adjustment bag 21 is lowered to below the melting point of the phase change material through the cooling tube, and the filling layer is now solid; when the hardness of the filling layer needs to be lowered, the temperature in the adjustment bag 21 is raised to above the melting point of the phase change material through the heating rod, and the phase change material melts into a liquid. Since the adjustment bag 21 is small and the filling layer volume is small, the heating rod and the cooling tube can control the temperature of the adjustment bag 21 faster, but compared with magnetorheological fluid, the adjustment speed of the phase change material is still slow, which leads to lower detection efficiency. Reference Figure 3 and Figure 4 The drive assembly 24 includes a piston rod 241 fixedly connected to the end of the push-pull plate 22 away from the test piece 61, and an air pipe 242 disposed on the clamping base 11 and plugged into the piston rod 241. When the push-pull plate 22 needs to be moved toward the test piece 61, air is injected into the air pipe 242, causing the piston rod 241 to push the push-pull plate 22 to move. Conversely, air is drawn into the air pipe 242, causing the piston rod 241 to drive the push-pull plate 22 away from the test piece 61.

[0034] The implementation principle of the device and method for detecting the verticality of the end face of an arc spring in the embodiment of the present application is as follows: when it is necessary to detect the verticality of the workpiece to be tested 61 in the standard state, the air is inflated into the air pipe 242 to enable the piston rod 241 to push the push-pull plate 22 to move, and the magnetization of the magnetic rod is stopped to lower the hardness of the filling layer. When the adjustment bag 21 is squeezed by the extrusion block 23, the filling layer in the adjustment bag 21 located at the end of the push-pull plate 22 away from the workpiece to be tested 61 moves toward the end close to the workpiece to be tested 61 to fully fill the cavity of the adjustment bag 21 close to the end of the workpiece to be tested 61. Then the magnetic rod is magnetized to increase the hardness of the filling layer, so that the adjustment bag 21 is in a high hardness state. Finally, the push-pull plate 22 is driven by the driving component 24 to move in the direction close to the workpiece to be tested 61. At this time, the side walls of the two adjustment bags 21 close to each other form a groove adapted to the standard part 62. The verticality of the workpiece to be tested 61 in the standard state can be detected by rotating the clamping seat 11. Then, when it is necessary to detect the verticality of the test piece 61 in its natural state, the magnetic rod is stopped from being magnetized to lower the hardness of the filling layer. At this time, the arc spring tends to move toward the free state, thereby causing the adjustment bag 21 and the filling layer in the adjustment bag 21 to be squeezed and deformed by the test piece 61. Then, the magnetic rod is magnetized again to increase the hardness of the filling layer, so that the adjustment bag 21 is in a high hardness state. At this time, the adjustment bag 21 supports the test piece 61 in its natural state. Finally, by rotating the clamping seat 11 to make the test piece 61 fit with the angle sensor 14, the verticality of the test piece 61 in its natural state can be detected.

[0035] Example 2

[0036] The present application discloses a method for detecting the verticality of the end face of an arc spring. Figure 1 and Figure 2 The method for detecting the verticality of the end face of the arc spring includes the following steps: S1. Data calibration and zeroing: Place the standard part 62 into the arc groove 12, adjust the width of the arc groove 12 to match the standard part 62, rotate the clamping seat 11 until the standard part 62 fits the angle sensor 14, and record the data at this time as zero; S2. Detection of the standard state of the test piece 61: Adjust the width of the arc groove 12, place the test piece 61 into the arc groove 12, adjust the width of the arc groove 12 to match the test piece 61 in its natural state, then rotate the clamping seat 11 until the test piece 61 is in contact with the angle sensor 14. The data from the angle sensor 14 at this time is recorded as the verticality of the test piece 61 in the standard state. S3. Detection of the free state of the test piece 61: Keep the test piece 61 in the arc groove 12, adjust the groove width of the arc groove 12 to match the standard part 62, so that the curvature of the test piece 61 is equal to that of the standard part 62, and finally rotate the clamping seat 11 until the test piece 61 is in contact with the angle sensor 14. The data from the angle sensor 14 at this time is recorded as the verticality of the test piece 61 in the free state.

[0037] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A device for detecting the verticality of an arc spring end face, comprising a support seat (1), characterized in that: A clamping seat (11) is rotatably provided on the support seat (1), an arc-shaped groove (12) is provided on the clamping seat (11), a positioning pin (13) is provided at one end of the inner bottom wall of the arc-shaped groove (12), an angle sensor (14) is provided on the support seat (1), and the angle sensor (14) is located on the rotation path of the clamping seat (11), the end of the arc-shaped groove (12) close to the positioning pin (13) is adapted to the standard part (62), the width of the arc-shaped groove (12) gradually increases from one end of the positioning pin (13) to the end away from the positioning pin (13), and an adjusting mechanism (2) for adjusting the width of the arc-shaped groove (12) is provided on the clamping seat (11).

2. The device for detecting the verticality of an arc spring end surface according to claim 1, wherein: The side wall of the arc-shaped groove (12) is provided with a receiving groove (3), and the adjusting mechanism (2) includes an adjusting bag (21) arranged in the receiving groove (3), a push-pull plate (22) connected to the adjusting bag (21), an extrusion block (23) fixed to the bottom wall of the receiving groove (3), a filling layer arranged in the adjusting bag (21), a driving component (24) for driving the push-pull plate (22) to move, and a control component for controlling the hardness of the filling layer. The adjusting bag (21) extends to both sides of the push-pull plate (22). When the adjusting bag (21) is completely located in the receiving groove (3), the part of the adjusting bag (21) located on the push-pull plate (22) away from the spring is tightly pressed against the extrusion block (23); when the filling layer is in a high hardness state and the adjusting bag (21) extends out of the receiving groove (3), the curvature of the side of the adjusting bag (21) close to the spring is adapted to the curvature of the standard part (62).

3. The device for detecting the verticality of an arc spring end surface according to claim 1, wherein: The filling layer is magnetorheological fluid, the control element is a magnetic rod arranged at both ends of the regulating bag (21), and the ends of the magnetic rods at both ends of the same regulating bag (21) that are close to each other are of opposite polarity.

4. The device for detecting the verticality of an arc spring end surface according to claim 1, wherein: The bag body of the regulating bag (21) comprises a magnetic conductive layer, a connecting layer and a magnetic blocking layer from the inside to the outside.

5. The device for detecting the verticality of the end surface of an arc spring according to claim 4, characterized in that: A plurality of magnetic rods (4) are arranged at intervals along the direction of the push-pull plate (22) on the inner side of the adjustment bag (21) close to the push-pull plate (22).

6. The device for detecting the verticality of an arc spring end surface according to claim 1, characterized in that: A partition plate (5) is provided above the push-pull plate (22) in the regulating bag (21), and a plurality of through holes (51) are provided on the partition plate (5).

7. The device for detecting the verticality of an arc spring end surface according to claim 1, characterized in that: The driving assembly (24) comprises a piston rod (241) fixedly connected to one end of the push-pull plate (22) away from the test piece (61), and an air pipe (242) arranged on the clamping seat (11) and plugged into the piston rod (241).

8. A method for detecting the verticality of an arc spring end face, based on the device for detecting the verticality of an arc spring end face according to any one of claims 1 to 7, characterized in that: include: S1. Data calibration and zeroing: Place the standard part (62) into the arc groove (12), adjust the width of the arc groove (12) to match the standard part (62), rotate the clamping seat (11) until the standard part (62) and the angle sensor (14) are in contact, and record the data at this time as zero; S2, standard state detection of the test piece (61): adjust the width of the arc groove (12), place the test piece (61) into the arc groove (12), adjust the width of the arc groove (12) to match the test piece (61) in the natural state, and then rotate the clamping seat (11) until the test piece (61) and the angle sensor (14) are in contact. The data of the angle sensor (14) at this time is recorded as the verticality of the test piece (61) in the standard state; S3. Detection of the free state of the test piece (61): Keep the test piece (61) in the arc groove (12), adjust the groove width of the arc groove (12) to match the standard piece (62), make the curvature of the test piece (61) equal to that of the standard piece (62), and finally rotate the clamping seat (11) until the test piece (61) and the angle sensor (14) are in contact. The data of the angle sensor (14) at this time is recorded as the verticality of the test piece (61) in the natural state.

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