Quick clamping device and method for electric servo modal testing

Abstract

The present invention relates to the field of rapid clamping technology, and in particular, to a rapid clamping device and method for modal testing of electric servos. The device comprises: a vertical plate assembly having a transversely extending receiving hole; a rotor assembly placed in the receiving hole, having a connecting ring and a plurality of rolling elements, the outermost sides of the plurality of rolling elements abutting against the inner peripheral wall of the receiving hole; a rotating shaft assembly comprising a retaining ring and an adapter shaft, the adapter shaft having a positioning portion and a limiting portion extending horizontally along one side of the positioning portion; the limiting portion is provided with a first step surface toward the side where the positioning portion is located, abutting against one side of the connecting ring, and the end face of the positioning portion away from the limiting portion is provided with a first assembly structure; the limiting portion is provided with a recessed receiving cavity away from the side where the positioning portion is located, for accommodating the electric servo; the retaining ring is provided with a second assembly structure, which is detachably fixedly connected to the first assembly structure, and limits the connecting ring in the receiving hole. This solves the problem that the existing modal test tooling needs to be repeatedly assembled and disassembled, and the modal test efficiency is low.

Description

Technical Field

[0001] The present invention relates to the technical field of rapid clamping, and in particular to a rapid clamping device and method for modal testing of an electric servo. Background Art

[0002] Electric servos are the actuators that deflect the control surfaces of weapon systems. Their function is to generate control torque for the subsystems based on control signals from the control system, thereby controlling the product's flight maneuvers. Modality is a key specification of electric servos, a factor of greatest concern to customers and required to be fully reviewed during every acceptance inspection. Improper allocation and adjustment of modal indicators can cause resonance in the weapon system, leading to uncontrollable flight conditions or other malfunctions.

[0003] The development of electric rudder servo models has experienced explosive growth in recent years, and modal testing of servos has evolved from requiring modal testing on individual models at the beginning of development to requiring modal testing on series products, and then on products of the same type, and finally on requiring modal testing on all products. However, existing modal testing tooling has the disadvantages of heavy workload of repeated assembly and disassembly, and low efficiency in performing modal testing, which is not conducive to improving production efficiency and capacity under the situation of increasing product output. The present invention inherits the ideas of existing clamping methods and clamping tooling, focuses on solving the shortcomings of repeated assembly and disassembly and low efficiency of existing clamping methods and clamping tooling, and designs a fast clamping method and clamping device to replace existing modal testing tooling. Summary of the Invention

[0004] In order to solve the problems of existing modal test tooling, such as large workload of repeated assembly and disassembly and low efficiency of modal testing, the present invention provides a rapid clamping device and method for modal testing of electric servos.

[0005] In a first aspect, the present invention provides a quick clamping device for modal testing of an electric servo, comprising:

[0006] A vertical plate assembly, wherein the vertical plate assembly has a transversely penetrating receiving hole;

[0007] a rotor assembly, the rotor assembly being placed in the receiving hole, the rotor assembly comprising a connecting ring and a plurality of rolling elements movably disposed on the connecting ring, the plurality of rolling elements rotating relative to the connecting ring along an axial direction of the connecting ring, and the outermost sides of the plurality of rolling elements abutting against an inner circumferential wall surface of the receiving hole along a radial direction of the connecting ring;

[0008] A rotating shaft assembly, the rotating shaft assembly including a retaining ring and an adapter shaft, the adapter shaft having a positioning portion and a limiting portion extending horizontally along one side of the positioning portion, the outer diameter of the positioning portion being smaller than the outer diameter of the limiting portion, the limiting portion forming a first step surface toward the side where the positioning portion is located, along the radial direction of the connecting ring, the outer surface of the positioning portion abuts against the innermost sides of the plurality of rolling elements, the first step surface abuts against one side of the connecting ring, the end surface of the positioning portion away from the limiting portion is provided with a first assembly structure, the limiting portion is recessed with an accommodating cavity on the side away from the positioning portion, the accommodating cavity being used to accommodate an electric steering gear;

[0009] The retaining ring is provided with a second assembly structure along the horizontal direction. The second assembly structure is detachably fixedly connected to the first assembly structure. The retaining ring limits the connection ring to be located in the accommodating hole.

[0010] In some embodiments, the rotor assembly further comprises a fastener;

[0011] Along the axial direction of the connecting ring, a plurality of grooves are provided on the connecting ring, and the plurality of rolling elements are placed one by one in one of the grooves. A third assembly structure is further provided on the connecting ring on the side where the groove is located, and the third assembly structure is staggered with the groove.

[0012] The fastener is provided with a fourth assembly structure, the fourth assembly structure is detachably fixedly connected to the third assembly structure, and the fastener restricts the rolling element to be located in the groove.

[0013] In some embodiments, the vertical plate assembly specifically includes: a vertical plate, a bottom plate and long plate ribs;

[0014] The first side of the long plate rib is fixed to the bottom plate, the second side of the long plate rib is fixed to the vertical plate, the vertical plate is provided with the accommodating hole, and the accommodating hole is staggered with the long plate rib.

[0015] In some embodiments, the shaft assembly further includes a positioning pin;

[0016] Along the radial direction of the connecting ring, a limiting groove is concavely formed on the outer peripheral surface of the limiting portion, and the limiting groove is connected to the limiting portion on the side where the first step surface is located;

[0017] The positioning pin passes through the vertical plate and is inserted into the limiting groove.

[0018] In some embodiments, along the radial direction of the connecting ring, a plurality of limiting holes are recessed on the outer peripheral surface of the limiting portion, and the plurality of limiting holes are arranged away from the first step surface. The limiting holes cooperate with the connecting piece to adjust and fix the electric servo.

[0019] In some embodiments, along the radial direction of the connecting ring, a plurality of reserved holes are recessed on the outer peripheral surface of the limiting portion, and the reserved holes are used to insert a wrench to rotate the shaft assembly.

[0020] In some embodiments, the electric servo is installed in the process chamber, the process chamber is fixed in the accommodating cavity, and the process chamber is adjusted and fixed using a plurality of the connecting members in conjunction with the limiting holes;

[0021] Insert a wrench into the reserved hole, drive the wrench to force the adapter shaft to rotate, and use the positioning pin to pass through the vertical plate and insert it into the limiting groove;

[0022] Perform modal test of the current servo position;

[0023] After completing the modal test of the current steering gear rudder position, adjusting the first assembly structure, removing the positioning pin, and rotating the adapter shaft;

[0024] After adjusting the steering gear position and the process chamber, the modal test is continued until the modal test of the steering gear is completed.

[0025] In some embodiments, installing the steering gear into the process chamber includes:

[0026] Install the craft rudder surface into the servo from above.

[0027] In some embodiments, adjusting the first assembly structure includes:

[0028] The first assembly structure is adjusted to reduce the friction between the retaining ring and the adapter shaft until the adapter shaft can rotate.

[0029] In some embodiments, adjusting the steering position of the steering gear and the process cabin includes:

[0030] Rotate the process deck to above the steering gear and remove the process deck;

[0031] Rotate the adapter shaft to the next electric servo to be tested and rotate it above the servo;

[0032] Install the craft deck into the servo from above.

[0033] To solve the problems of existing modal test fixtures, such as heavy workload of repeated assembly and disassembly and low efficiency of modal testing, the present invention has the following advantages:

[0034] 1. The technical solution of the present invention can significantly improve the efficiency of electric servo modal testing and rudder position replacement.

[0035] 2. The technical solution of the present invention reduces the number of rotations of the electric servo during modal testing, thereby preventing scratches on the surface of the electric servo caused by rotation in the process chamber and improving the appearance quality of the product.

[0036] 3. The technical solution of the present invention reduces the number of times the threaded mounting holes for connecting the electric servo to the process chamber are used during modal testing, thereby improving the reliability and service life of the servo threads.

[0037] 4. Through the technical solution of the present invention, the rotation angle of the servo can be simply positioned, eliminating insufficient stiffness during measurement and the phenomenon of vias being stuck during measurement, thereby improving the accuracy of modal testing. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 shows a schematic diagram of the rotor assembly structure;

[0039] Figure 2 A schematic cross-sectional view of the rotor assembly structure is shown;

[0040] Figure 3 Shows a schematic cross-sectional structure diagram of a quick clamping device;

[0041] Figure 4 Shows a right view of the quick clamping device structure;

[0042] Figure 5 Shows a cross-sectional view of the shaft assembly structure;

[0043] Figure 6 A schematic diagram of the limiting hole structure is shown.

[0044] Figure markings: 100-vertical plate assembly; 110-vertical plate; 111-accommodating hole; 120-long plate rib; 130-bottom plate; 200-rotor assembly; 210-connecting ring; 220-rolling member; 230-groove; 240-fastener; 250-third assembly structure; 251-fourth assembly structure; 300-rotating shaft assembly; 310-retaining ring; 320-adapting shaft; 330-locating pin; 321-limiting portion; 322-locating portion; 323-first step surface; 324-accommodating cavity; 325-limiting hole; 326-limiting groove; 327-reserved hole; 328-first assembly structure; 311-second assembly structure. DETAILED DESCRIPTION

[0045] The present disclosure will now be discussed with reference to several exemplary embodiments. It should be understood that these embodiments are discussed only to enable those skilled in the art to better understand and implement the present disclosure, rather than to imply any limitation on the scope of the present disclosure.

[0046] As used herein, the term "including" and its variations are to be interpreted as open-ended terms meaning "including, but not limited to." The term "based on" is to be interpreted as "based, at least in part, on." The terms "one embodiment" and "an embodiment" are to be interpreted as "at least one embodiment." The term "another embodiment" is to be interpreted as "at least one other embodiment." Terms such as "upper," "lower," "left," "right," "front," "back," "top," "bottom," "inner," "outer," "vertical," "horizontal," "transverse," and "longitudinal" indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings. These terms are primarily intended to better describe the present application and its embodiments and are not intended to limit the devices, elements, or components indicated to having a specific orientation, or to being constructed and operated in a specific orientation. Furthermore, some of the above terms may be used to indicate other meanings besides orientation or positional relationships. For example, the term "on" may, in certain circumstances, be used to indicate a dependency or connection relationship. Those skilled in the art will understand the specific meanings of these terms in this application based on the specific circumstances. Furthermore, the terms "installed," "disposed," "provided with," "connected," and "connected" are to be interpreted broadly. For example, it can be a fixed connection, a detachable connection, or an integral structure; it can be a mechanical connection, or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be an internal connection between two devices, elements or components. For those of ordinary skill in the art, the specific meanings of the above terms in this application can be understood according to the specific circumstances. In addition, the terms "first", "second", etc. are mainly used to distinguish different devices, elements or components (the specific types and structures may be the same or different), and are not used to indicate or imply the relative importance and quantity of the indicated devices, elements or components. Unless otherwise specified, "plurality" means two or more.

[0047] In the present invention, the electric servo to be tested has a working mechanism of one servo with four rudder surfaces, and modal testing is required for each rudder position. When using existing modal testing tooling to perform modal testing on this model of electric servo, after completing the test for one rudder position for each product, the rudder surface must first be removed from the servo, then the servo must be completely removed from the modal testing tooling, rotated 90°, and then reinstalled on the modal tooling. The rudder surface must then be reattached to the servo before the modal test for the next rudder position can be carried out. A single servo, without adjustment, requires four installation and removal of the rudder surface and servo to complete the modal test. The process is as follows: Since the rudder surface requires four screws to secure the servo, and the servo to the commissioning nacelle requires six screws for each rudder position, a total of 24 screws for each of the four rudder positions. After completing the modal test for one rudder position, the four screws on the rudder surface must be removed, followed by the rudder surface removed from the servo. Then, the 24 screws from each of the four rudder positions must be removed. The servo is rotated 90° in the commissioning nacelle to the next rudder position. The rudder surface is then installed and secured to the servo using the 24 screws from each of the four rudder positions. The rudder surface is then installed and secured to the servo using the four screws. The modal test for the next rudder position is then repeated. A total of 28 screws must be installed and removed for each rudder position to complete the modal test. For each servo position change, 84 screws must be installed and removed, representing a significant workload and requiring significant physical effort. The above reasons lead to the low efficiency of modal testing using existing technologies, which has become one of the main bottlenecks restricting the smooth development of production.

[0048] In the first aspect of the present invention, this embodiment discloses a quick clamping device for modal testing of an electric servo, such as Figures 1 to 6 As shown, including:

[0049] A vertical plate 110 assembly 100, wherein the vertical plate 110 assembly 100 has a transversely penetrating receiving hole 111;

[0050] The rotor assembly 130 is placed in the receiving hole 111. The rotor assembly 130 includes a connecting ring 210 and a plurality of rolling elements 220 movably disposed on the connecting ring 210. The plurality of rolling elements 220 rotate relative to the connecting ring 210 along the axial direction of the connecting ring 210. Along the radial direction of the connecting ring 210, the outermost sides of the plurality of rolling elements 220 abut against the inner circumferential wall of the receiving hole 111.

[0051] The rotating shaft assembly 300 includes a retaining ring 310 and an adapter shaft 320. The adapter shaft 320 has a positioning portion 322 and a limiting portion 321 extending horizontally along one side of the positioning portion 322. The outer diameter of the positioning portion 322 is smaller than the outer diameter of the limiting portion 321. The limiting portion 321 has a first stepped surface 323 formed on the side of the positioning portion 322. Along the radial direction of the connecting ring 210, the outer surface of the positioning portion 322 abuts the innermost side of the plurality of rolling elements 220. The first stepped surface 323 abuts one side of the connecting ring 210. The end surface of the positioning portion 322 away from the limiting portion 321 is provided with a first assembly structure 328. The limiting portion 321 has a recessed accommodating cavity 324 on the side away from the positioning portion 322. The accommodating cavity 324 is used to accommodate an electric steering gear.

[0052] The retaining ring 310 is provided with a second assembly structure 311 along the horizontal direction. The second assembly structure 311 is detachably fixedly connected to the first assembly structure 328 . The retaining ring 310 limits the connection ring 210 in the receiving hole 111 .

[0053] In some embodiments, the rotor assembly 130 further includes a fastener 240;

[0054] Along the axial direction of the connecting ring 210, a plurality of grooves 230 are provided on the connecting ring 210, and the plurality of rolling elements 220 are placed one by one in one of the grooves 230. A third assembly structure 250 is further provided on the connecting ring 210 on the side where the groove 230 is located. The third assembly structure 250 is staggered with respect to the groove 230.

[0055] The fastener 240 is provided with a fourth assembly structure 251 . The fourth assembly structure 251 is detachably fixedly connected to the third assembly structure 250 . The fastener 240 restricts the rolling element 220 in the groove 230 .

[0056] In some embodiments, the vertical plate 110 assembly 100 specifically includes: a vertical plate 110, a bottom plate and long plate ribs 120;

[0057] The first side of the long plate rib 120 is fixed to the bottom plate, and the second side of the long plate rib 120 is fixed to the vertical plate 110 . The vertical plate 110 is provided with the accommodating hole 111 , and the accommodating hole 111 is staggered with the long plate rib 120 .

[0058] In some embodiments, the shaft assembly 300 further includes a positioning pin 330;

[0059] Along the radial direction of the connecting ring 210 , a limiting groove 326 is formed on the outer circumference of the limiting portion 321 . The limiting groove 326 communicates with the limiting portion 321 on the side where the first step surface 323 is located.

[0060] The positioning pin 330 passes through the vertical plate 110 and is inserted into the limiting groove 326 .

[0061] In some embodiments, along the radial direction of the connecting ring 210, a plurality of limiting holes 325 are recessed on the outer peripheral surface of the limiting portion 321, and the plurality of limiting holes 325 are arranged away from the first step surface 323. The limiting holes 325 cooperate with the connecting piece to adjust and fix the electric servo.

[0062] In some embodiments, along the radial direction of the connecting ring 210 , a plurality of reserved holes 327 are recessed on the outer circumferential surface of the limiting portion 321 , and the reserved holes 327 are used to insert a wrench to rotate the rotating shaft assembly 300 .

[0063] In this embodiment, a rapid clamping device for modal testing of an electric servo is proposed. The device comprises three components: a vertical plate 110 assembly 100, a rotor assembly 130, and a shaft assembly 300. The vertical plate 110 assembly 100 is used to support the shaft assembly 300 that drives the electric servo and is secured to a platform, preferably a cast iron platform. The shaft assembly 300 is used to secure the process chamber and facilitate rapid clamping during modal testing of the servo. The rotor assembly 130 is used to enable rapid rotation of the shaft assembly 300 on the vertical plate 110 assembly 100. The rotor assembly 130 is installed between the vertical plate 110 assembly 100 and the shaft assembly 300, and is connected using a detachable connection, preferably a screw connection.

[0064] Specifically, such as Figure 3 As shown, the vertical plate 110 assembly 100 includes one vertical plate 110, two long plate ribs 120, and one bottom plate. The long plate ribs 120 are fixedly connected to the bottom plate on two opposite sides of the bottom plate, and the vertical plate 110 is fixedly connected to the other side of the bottom plate and is also fixedly connected to the two long plate ribs 120. The bottom plate is detachably connected to the platform.

[0065] Specifically, the fixed connection method of the vertical plate 110, the long plate rib 120 and the bottom plate is preferably welding, and can also be clamping or screw connection. The purpose is to ensure that the stiffness of the vertical plate 110 assembly 100 is greater than the modal stiffness of the servo and will not affect the modal test of the electric servo.

[0066] Specifically, the vertical plate 110 also has a transversely penetrating accommodating hole 111, and the inner peripheral wall of the accommodating hole 111 abuts against the outer side of the rolling element 220 of the rotor assembly 130, so that the process chamber is fixed in the accommodating cavity 324 and abuts against the inner side of the rotor assembly 130, and when there is no fixation in the axial direction, the process chamber can perform axial rotation of the accommodating hole 111.

[0067] Specifically, such as Figure 1 and Figure 2 As shown, the rotor assembly 130 includes a connecting ring 210, a fastener 240, and a plurality of rolling elements 220. The connecting ring 210 is provided with a plurality of grooves 230, the number of which is equal to the number of rolling elements 220. The rolling elements 220 are placed one by one in the grooves 230. A third assembly structure 250 is further provided between each pair of grooves 230 on the connecting ring 210. This structure cooperates with a fourth assembly structure 251 on the fastener 240 to confine the rolling elements 220 in the grooves 230 of the connecting ring 210.

[0068] Specifically, the outer diameter of the rolling element 220 is slightly larger than the radial width of the connecting ring 210, so that the rolling element 220 is partially exposed from the groove 230 when placed in the groove 230, thereby achieving the purpose of allowing the process chamber abutting the inner side of the rolling element 220 to rotate.

[0069] Specifically, the rolling element 220 is preferably a cylindrical ring. When the rolling element 220 is a cylindrical ring, a pin of a certain size needs to be inserted into the center hole of the cylindrical ring, and the two ends of the pin abut against the connecting ring 210 and the fastener 240 to limit the rolling direction of the cylindrical ring.

[0070] Specifically, rolling element 220 can be a solid or hollow roller. When rolling element 220 is a solid or hollow roller, the roller's diameter needs to be designed based on the axial length, width, and radial depth of groove 230. The radial length should be slightly greater than the roller's diameter, the radial width should be slightly less than the roller's diameter, and the axial depth should be slightly greater than the roller's diameter. This allows the roller to roll flexibly within groove 230. For example, if the roller's radius is 10 mm, groove 230 can have a radial length of 10.5 mm, a radial width of 9.0 mm, and an axial depth of 10.5 mm.

[0071] Specifically, the third assembly structure 250 and the fourth assembly structure 251 can be a set of screws and screw holes, or a set of screws and nuts. The purpose is to restrict the rolling element 220 in the groove 230, but not to affect the radial rotation of the rolling element 220 along the accommodating hole 111.

[0072] Specifically, in order to ensure the stability of the structure, the third assembly structure 250 and the fourth assembly structure 251 may be further glued to make the structure more stable.

[0073] Specifically, such as Figure 3 and Figure 5 As shown, the shaft assembly 300 includes a transfer shaft 320, a positioning pin 330, and a retaining ring 310. The shaft assembly 300 has a stopper 321 and a positioning portion 322. A recessed accommodating cavity 324 is defined on the side of the stopper 321 away from the positioning portion 322. The outer diameter of the positioning portion 322 is smaller than that of the stopper 321, forming a first stepped surface 323 at the junction of the positioning portion 322 and the stopper 321. The adapter shaft 320 is further provided with a first assembly structure 328 on the end face of the positioning portion 322 away from the limiting portion 321, which forms a detachable fixed connection with the second assembly structure 311 on the retaining ring 310, thereby restricting the rotor assembly 130 in the accommodating hole 111. In layman's terms, the retaining ring 310 and the adapter shaft 320 cooperate with the first assembly structure 328 and the second assembly structure 311 to squeeze and fix the rotor assembly 130 on the accommodating hole 111 of the vertical plate 110 along the radial direction of the accommodating hole 111.

[0074] Specifically, a limiting groove 326 is provided on the outer circumference of the limiting portion 321 of the connecting shaft, along the radial direction of the connecting ring 210. This groove is used to limit the positioning pin 330 of the rotating shaft assembly 300. This is to limit the rotation angle of the electric servo during modal testing. The limiting groove 326 can be continuous or connected only along the side where the first step surface 323 is located. When the electric servo needs to be fixed in a certain steering position, the positioning pin 330 is inserted from the side of the retaining ring 310 of the vertical plate 110, through the vertical plate 110, and into the limiting groove 326, thereby fixing the rotating shaft assembly 300 and preventing further rotation.

[0075] Specifically, the accommodating cavity 324 of the adapter shaft 320 may be a through-hole or non-through-hole arrangement, and the accommodating cavity 324 is used to fix a process cabin for installing the electric servo.

[0076] Specifically, a plurality of retaining holes 325 are recessed along the outer circumference of the retaining portion 321 along the radial direction of the connecting ring 210. The retaining holes 325 are spaced apart from the first stepped surface 323 and are used to adjust and secure the electric servo placed in the accommodating cavity 324. These retaining holes 325 can be adjusted and secured by pins passing through the retaining holes 325 to abut against the process chamber, or by threading the retaining holes 325 to abut against the process chamber using screws.

[0077] Specifically, during a modal test of a certain steering position of an electric servo, abnormal data was detected. After multiple inspections, it was discovered that this was likely due to a certain deviation when the electric servo was fixed in the process chamber, causing the steering position of the electric servo to not remain horizontal or vertical. In this case, if the test was stopped and readjusted, a large amount of time would be wasted on disassembly and reassembly. However, by adjusting the stopper hole 325, a deviation in the opposite direction of the steering position of the electric servo is achieved to compensate for the deviation of the electric servo fixed in the process chamber. For example, if the electric servo has a vertical deviation of approximately 10 degrees when fixed in the process chamber, the lower stopper hole 325 is adjusted to adjust the process chamber vertically to compensate for the deviation. If the electric servo rotates 180 degrees, the process chamber will have a vertical deviation of approximately 10 degrees. Similarly, if the electric servo rotates 90 degrees, the corresponding stopper hole 325 is adjusted to compensate for the deviation.

[0078] Specifically, along the radial direction of the connecting ring 210, a plurality of reserved holes 327 are recessed on the outer peripheral surface of the limiting portion 321. The function of these reserved holes 327 is to insert a wrench. The rotation of the wrench drives the rotating shaft assembly 300 to rotate the process chamber, thereby achieving the purpose of rotating the electric servo steering position.

[0079] Specifically, by using the clamping device provided by the present invention, when performing modal testing on an electric servo, the original installation and removal of 84 screws is changed to installation and removal of 16 connecting devices, and tightening and loosening 32 fastening devices, which can greatly improve the work efficiency during modal testing of the electric servo.

[0080] In a second aspect of the present invention, a rapid clamping method for modal testing of an electric servo is proposed, comprising:

[0081] Install the electric servo into the process chamber, fix the process chamber into the accommodating cavity 324, and use a plurality of the connecting members to cooperate with the limiting holes 325 to adjust and fix the process chamber;

[0082] Insert a wrench into the reserved hole 327 , drive the wrench to force the adapter shaft 320 to rotate, and use the positioning pin 330 to pass through the vertical plate 110 and insert it into the limiting groove 326 ;

[0083] Perform modal test of the current servo position;

[0084] After completing the modal test of the current servo position, adjust the first assembly structure 328, remove the positioning pin 330, and rotate the adapter shaft 320;

[0085] After adjusting the steering gear position and the process chamber, the modal test is continued until the modal test of the steering gear is completed.

[0086] In some embodiments, installing the steering gear into the process chamber includes:

[0087] Install the craft rudder surface into the servo from above.

[0088] In some embodiments, adjusting the first assembly structure 328 includes:

[0089] The first assembly structure 328 is adjusted to reduce the friction between the retaining ring 310 and the adapter shaft 320 until the adapter shaft 320 can rotate.

[0090] In some embodiments, adjusting the steering position of the steering gear and the process cabin includes:

[0091] Rotate the process deck to above the steering gear and remove the process deck;

[0092] Rotate the adapter shaft 320 to the next electric servo to be tested and rotate it above the servo;

[0093] Install the craft deck into the servo from above.

[0094] In this embodiment, a method for rapid clamping of an electric servo modal test using the above-mentioned device is proposed, comprising the following steps:

[0095] First, install the electric servo into the process chamber and secure it to the accommodating cavity 324 of the shaft assembly 300. Use the stopper holes 325 and connectors to adjust and tighten the process chamber. Next, insert a wrench into the reserved hole 327 and drive it to rotate the adapter shaft 320 until the electric servo's steering position reaches the preset position. Then, use the locating pin 330 to secure the shaft assembly 300 and stop it from rotating. Then, perform a modal test of the electric servo's first steering position. After completing the modal test of the first steering position, adjust the first assembly structure 328 to reduce the pressure exerted by the retaining ring 310 and the adapter shaft 320 on the rotor assembly 130 axially along the connecting ring 210, allowing the shaft assembly 300 to rotate radially along the connecting ring 210. After adjusting to the electric servo's second steering position, secure the first assembly structure 328, insert the locating pin 330, and perform the modal test of the second steering position. Repeat these steps until the modal test of all steering positions of the electric servo is complete.

[0096] Specifically, when installing the servo into the process cabin, the process rudder surface is installed into the servo from above, which can facilitate the installation and removal of the process rudder surface, further improve efficiency, and also facilitate installation and removal when problems arise.

[0097] Specifically, when adjusting the first assembly structure 328, it is only necessary to loosen the connection between the first assembly structure 328 and the second assembly structure 311, thereby reducing the pressure exerted by the retaining ring 310 and the adapter shaft 320 on the rotor assembly 130 along the axial direction of the connecting ring 210. This reduces the static friction between the rotor assembly 130 and the rotating shaft assembly 300, allowing the rotating shaft assembly 300 to rotate radially along the connecting ring 210. This eliminates the need to completely disassemble the first assembly structure 328, thereby improving efficiency when switching the steering position of the electric servo for modal testing.

[0098] Specifically, when adjusting the steering gear position and the process cabin, turn the process cabin surface to the top of the steering gear, take out the process cabin surface, rotate the adapter shaft 320 until the first electric steering gear position to be tested faces upward, and install the process cabin surface into the steering gear from above.

[0099] To sum up, through the above-mentioned structural setting and corresponding method, the efficiency of replacing the rudder position in the modal test of the electric servo can be significantly improved; the number of rotations of the electric servo during the modal test is reduced, and the problem of scratches on the appearance of the electric servo due to rotation in the process cabin is eliminated, thereby improving the appearance quality of the product; the number of times the electric servo is used to connect with the process cabin during the modal test is reduced, thereby improving the reliability and service life of the servo thread; the rotation angle of the servo can be simply positioned, thereby eliminating insufficient stiffness during measurement, eliminating the phenomenon of through-hole jamming during measurement, and improving the accuracy of the modal test.

[0100] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the invention can be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the invention is defined by the appended claims rather than the foregoing description, and it is intended that all variations that come within the meaning and range of equivalents of the claims be embraced therein.

[0101] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A quick clamping device for modal testing of electric servos, characterized in that: include: A vertical plate assembly, wherein the vertical plate assembly has a transversely penetrating receiving hole; a rotor assembly, the rotor assembly being placed in the receiving hole, the rotor assembly comprising a connecting ring and a plurality of rolling elements movably disposed on the connecting ring, the plurality of rolling elements rotating relative to the connecting ring along an axial direction of the connecting ring, and the outermost sides of the plurality of rolling elements abutting against an inner circumferential wall surface of the receiving hole along a radial direction of the connecting ring; A rotating shaft assembly, the rotating shaft assembly includes a retaining ring and an adapter shaft, the adapter shaft has a positioning portion and a limiting portion extending horizontally along one side of the positioning portion, the outer diameter of the positioning portion is smaller than the outer diameter of the limiting portion, the limiting portion is formed with a first step surface toward the side where the positioning portion is located, along the radial direction of the connecting ring, the outer surface of the positioning portion abuts against the innermost side of the plurality of rolling elements, the first step surface abuts against one side of the connecting ring, the end surface of the positioning portion away from the limiting portion is provided with a first assembly structure, the limiting portion is recessed with an accommodating cavity on the side away from the positioning portion, and the accommodating cavity is used to accommodate a process chamber; The retaining ring is provided with a second assembly structure in the horizontal direction, the second assembly structure is detachably fixedly connected to the first assembly structure, and the retaining ring limits the connection ring to be located in the receiving hole; The rotating shaft assembly further includes a positioning pin; Along the radial direction of the connecting ring, a limiting groove is concavely formed on the outer peripheral surface of the limiting portion, and the limiting groove is connected to the limiting portion on the side where the first step surface is located; The positioning pin passes through the vertical plate and is inserted into the limiting groove; Along the radial direction of the connecting ring, a plurality of limiting holes are concavely provided on the outer peripheral surface of the limiting portion. The plurality of limiting holes are arranged away from the first step surface. The limiting holes cooperate with the connecting piece to adjust and fix the electric servo.

2. The quick clamping device for modal testing of an electric servo according to claim 1, characterized in that: Along the radial direction of the connecting ring, a plurality of reserved holes are concavely provided on the outer peripheral surface of the limiting portion, and the reserved holes are used for inserting a wrench to rotate the rotating shaft assembly.

3. The quick clamping device for modal testing of an electric servo according to claim 2, characterized in that: The rotor assembly further includes a fastener; Along the axial direction of the connecting ring, a plurality of grooves are provided on the connecting ring, and the plurality of rolling elements are placed one by one in one of the grooves. A third assembly structure is further provided on the connecting ring on the side where the groove is located, and the third assembly structure is staggered with the groove. The fastener is provided with a fourth assembly structure, the fourth assembly structure is detachably fixedly connected to the third assembly structure, and the fastener restricts the rolling element to be located in the groove.

4. The quick clamping device for modal testing of an electric servo according to claim 1, characterized in that: The vertical plate assembly specifically includes: a vertical plate, a bottom plate and long plate ribs; The first side of the long plate rib is fixed to the bottom plate, the second side of the long plate rib is fixed to the vertical plate, the vertical plate is provided with the accommodating hole, and the accommodating hole is staggered with the long plate rib.

5. A rapid clamping method for modal testing of an electric servo, characterized in that: The method is applied to the clamping device according to claim 2, and the method comprises: Installing the electric servo into the process cabin, fixing the process cabin into the accommodating cavity, and adjusting and fixing the process cabin using a plurality of the connecting members in conjunction with the limiting holes; Insert a wrench into the reserved hole, drive the wrench to force the adapter shaft to rotate, and use the positioning pin to pass through the vertical plate and insert it into the limiting groove; Perform modal test of the current servo position; After completing the modal test of the current steering gear rudder position, adjusting the first assembly structure, removing the positioning pin, and rotating the adapter shaft; After adjusting the steering gear position and the process chamber, the modal test is continued until the modal test of the steering gear is completed.

6. The rapid clamping method for modal testing of an electric servo according to claim 5, characterized in that: The step of installing the electric servo into the process cabin includes: Install the craft rudder surface into the servo from above.

7. The rapid clamping method for modal testing of an electric servo according to claim 5, characterized in that: The adjusting the first assembly structure includes: The first assembly structure is adjusted to reduce the friction between the retaining ring and the adapter shaft until the adapter shaft can rotate.

8. The rapid clamping method for modal testing of an electric servo according to claim 5, characterized in that: The adjusting of the steering gear position and the process cabin comprises: Rotate the process deck to above the steering gear and remove the process deck; Rotate the adapter shaft to the next electric servo to be tested and rotate it above the servo; Install the craft deck into the servo from above.

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