A rudder angle measurement device for miniature high-overload servo

Abstract

The present invention relates to a rudder deflection angle measuring device for a miniature anti-high overload servo, which belongs to the field of angle measurement technology and solves the problem that conventional rudder deflection angle measuring devices cannot be adapted to miniature anti-high overload servos. The present invention includes a base, a tooling cabin, and an angle measuring assembly; the tooling cabin is used to install the servo and rudder surface to be tested, and is supported on the base; the angle measuring assembly includes an active part, a driven part, a driven shaft, a bearing, a bearing seat, and an angle encoder, the active part is fixedly arranged at the bottom of the rudder surface, the driven part is arranged at one end of the driven shaft and meshes with the active part; the angle encoder is arranged at the other end of the driven shaft and can measure the angle of rotation of the driven shaft. The present invention adopts the method of fixing the active part at the bottom of the rudder surface to transmit the deflection angle of the rudder surface to the driven shaft, and obtains the actual value of the rudder deflection angle by measuring the rotation angle of the driven shaft, thereby realizing accurate measurement of the rudder deflection angle of the miniature anti-high overload servo.

Description

Technical Field

[0001] The present invention relates to the technical field of angle measurement, and in particular to a rudder angle measuring device for a miniature high-overload resistant servo. Background Art

[0002] Rudder deflection angle measurement is used to verify and perform nonlinear fitting of the rudder surface's rotation angle, significantly impacting the accuracy of aircraft attitude control. Conventional rudder deflection angle measurement devices primarily consist of a positioning mechanism and an encoder. The positioning mechanism includes a fixed base, and the encoder is coaxially mounted with the rudder shaft. These devices can only measure the rudder shaft's rotation angle, not the rudder surface's deflection angle. The rudder surface's deflection angle is the terminal's output angle, while the rudder shaft's rotation angle is the steering gear's output angle. At the upstream stage of the terminal, there may be backlash and return errors between the two. Furthermore, when measuring conventional rudder shaft angles, the existing technology allows for direct connection of the measurement device to the interface, as the rudder shaft has a suitable interface for mounting and positioning. However, when measuring the rudder surface angle of a miniature, high-overload-resistant servo, the rudder surface's complex, thin shape, and the lack of a suitable interface within the rudder shaft, coupled with the limited space within the servo, makes the conventional method of attaching the measurement device to the rudder shaft impractical.

[0003] The miniature high-g-resistant servo involved in this invention refers to a servo with a diameter of less than 70 mm and capable of withstanding overloads of 10,000 g. Due to their superior performance, these servos play an important role in aerospace, robotics, precision instrumentation, and other fields. Furthermore, due to their high initial velocity, they require high angular accuracy. Therefore, a device capable of accurately detecting the deflection angle of their control surfaces is required. Summary of the Invention

[0004] In view of the above analysis, an embodiment of the present invention aims to provide a rudder angle measurement device for a miniature high-overload resistant servo, so as to solve the problem that conventional rudder angle measurement devices cannot be adapted to miniature high-overload resistant servos.

[0005] On the one hand, the present invention provides a rudder angle measuring device for a miniature resistant high overload servo, comprising a base, a tooling cabin and an angle measuring assembly; wherein the tooling cabin is used to install the servo and rudder surface to be tested, and support the servo and rudder surface on the base; the angle measuring assembly comprises an active member, a driven member, a driven shaft, a bearing, a bearing seat and an angle encoder, and the driven shaft is arranged on the base through the bearing and the bearing seat; the active member is fixedly arranged at the bottom of the rudder surface, and the driven member is arranged at one end of the driven shaft and meshes with the active member; the center of the arc surface of the active member is on the rotation axis of the rudder surface, and the rotation radius of the driven member is equal to the rotation radius of the active member; the angle encoder is arranged at the other end of the driven shaft and can measure the angle of rotation of the driven shaft.

[0006] Furthermore, the base includes a cross-shaped seat body and a support frame, wherein the support frame is located in the middle of the cross-shaped seat body and protrudes upward for a distance; the cross-shaped seat body includes a central cavity and four supports evenly distributed circumferentially around the central cavity; each of the supports includes a first installation space with an opening facing outward, and the first installation space is used to install the bearing seat.

[0007] Furthermore, the height of the bearing seat relative to the first installation space is adjustable.

[0008] Furthermore, the support frame includes a vertical support rod and a top support surface, the vertical support rod extends vertically upward from the top of the cross-shaped seat body, and the top support surface is fixedly arranged on the top of the vertical support rod.

[0009] Furthermore, the top support surface has a central through hole, and a plurality of first positioning holes are evenly distributed circumferentially around the central through hole; positioning blocks are provided at the four corners of the top support surface; the first positioning holes are adapted to the positioning protrusions at the bottom of the tooling cabin, and the positioning blocks are suitable for clamping the outer circumferential surface of the tooling cabin.

[0010] Furthermore, the active component includes a bow-shaped piece and mounting lugs located on both sides of the top of the bow-shaped piece.

[0011] Furthermore, a third mounting hole is provided on the mounting lug, for fixing the active component to the bottom of the rudder surface by screws.

[0012] Furthermore, a plurality of teeth are provided on the arc surface of the bow-shaped piece or the arc surface is a friction surface.

[0013] Furthermore, the angle measurement assembly also includes an elastic support plate, one end of which is fixedly connected to the angle encoder, and the other end of which is fixedly connected to the bearing seat.

[0014] Furthermore, the base also includes an auxiliary bracket, and the auxiliary bracket includes a horizontal bracket and a vertical bracket; the horizontal bracket is fixedly arranged at the bottom of the base, and the vertical bracket is fixedly arranged at one side end of the horizontal bracket.

[0015] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0016] (1) The rudder deflection angle measuring device of the present invention adopts a method of fixing the active member at the bottom of the rudder surface and meshing the driven member with the active member to transmit the deflection angle of the rudder surface to the driven shaft. By making the center of the arc surface of the active member on the rotation axis of the rudder surface and the rotation radius of the driven member equal to the rotation radius of the active member, the rotation angle of the driven shaft is made equal to the deflection angle of the rudder surface. The actual value of the rudder deflection angle is obtained by measuring the rotation angle of the driven shaft, thereby achieving accurate measurement of the rudder deflection angle of the miniature high-overload resistant servo and solving the problem that the conventional rudder deflection angle measuring device cannot be adapted to the miniature high-overload resistant servo. Compared with the conventional rudder deflection angle measuring device which measures the rotation angle of the rudder shaft, the rudder deflection angle measuring device of the present invention directly measures the deflection angle of the rudder surface, which is not affected by the gap between the rudder shaft and the rudder surface and the return error, and the measurement result is more accurate. At the same time, since the active member is fixed at the bottom of the rudder surface, it will not affect the aerodynamic characteristics of the rudder surface.

[0017] (2) The present invention provides installation space for four angle measurement components through the four supports of the cross-shaped seat body of the base, which can simultaneously collect the rudder deflection angles of the four rudder surfaces of the servo; and provides installation space for the active component and the driven component through the support frame, so that the deflection angle of the rudder surface can be transmitted to the driven shaft without distinction;

[0018] (3) The present invention can reduce and eliminate the meshing clearance and return error between the active member and the driven member by making the height of the bearing seat adjustable, thereby improving the measurement accuracy of the rudder deflection angle of the steering gear;

[0019] (4) By setting the positioning holes, positioning blocks and positioning protrusions, accurate positioning between the rudder surface and the angle measurement component is achieved, so that the rudder deflection angle of the servo can be accurately measured.

[0020] In the present invention, the above-mentioned technical solutions can be combined with each other to achieve more preferred combinations. Other features and advantages of the present invention will be described in the following description, and some advantages will become apparent from the description or be learned through practice of the present invention. The objectives and other advantages of the present invention can be realized and obtained through the contents particularly pointed out in the description and drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings are only used for the purpose of illustrating specific embodiments and are not to be considered as limiting the present invention. Throughout the drawings, the same reference symbols denote the same components.

[0022] Figure 1 This is a schematic diagram of the structure of a rudder angle measurement device for a miniature high-overload resistant servo.

[0023] Figure 2 This is a longitudinal cross-sectional view of a rudder angle measuring device for a miniature high-overload resistant servo.

[0024] Figure 3 This is a front view of a rudder angle measurement device for a miniature high-overload resistant servo.

[0025] Figure 4 is a structural diagram of the base;

[0026] Figure 5 It is a structural diagram of the bearing seat;

[0027] Figure 6 Schematic diagram of the structure of the rudder surface;

[0028] Figure 7 It is a structural diagram of the active component;

[0029] Figure 8 Schematic diagram of the structure of the angle encoder and the elastic support piece.

[0030] Reference numerals:

[0031] 10-base; 11-cross-shaped base; 111-support; 1111-bottom plate; 1112-first side plate; 1113-second side plate; 1114-third side plate; 11141-first mounting hole; 1115-first mounting space; 1116-second mounting space; 12-support frame; 121-vertical support rod; 122-top support surface; 13-auxiliary support; 131-horizontal support; 132-vertical support; 20-tooling cabin; 21-cylindrical body; 211-positioning step surface; 212-second mounting hole; 21 3-sliding bearing; 30-angle measuring assembly; 31-active part; 311-arc-shaped piece; 3111-arc surface; 3112-top surface; 312-mounting lug; 3121-third mounting hole; 32-driven part; 33-driven shaft; 34-rolling bearing; 35-bearing seat; 351-shaft hole; 352-fourth mounting hole; 353-U-shaped groove; 354-strip through hole; 355-elastic piece fixing hole; 36-angle encoder; 37-end cover; 38-positioning screw; 39-elastic support piece; 40-servo; 50-rudder surface. DETAILED DESCRIPTION

[0032] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings, wherein the accompanying drawings constitute a part of the present invention and are used together with the embodiments of the present invention to illustrate the principles of the present invention, but are not used to limit the scope of the present invention.

[0033] Example 1

[0034] This embodiment 1 discloses a rudder angle measuring device for a miniature high overload resistant servo, the structure of which is as follows: Figure 1 、 Figure 2 and Figure 3 As shown, it is used to realize the real-time acquisition of the servo rudder deflection angle, and then realize the evaluation of the servo's own angle sensor feedback data.

[0035] The rudder angle measurement device for a miniature, high-overload-resistant servo 40 in this embodiment includes a base 10, a tooling cabin 20, and an angle measurement assembly 30. The tooling cabin 20 is used to mount the servo 40 and rudder surface 50 to be tested, supporting them on the base 10. Multiple angle measurement assemblies 30 are provided on the base 10, corresponding one to each rudder surface 50. Each angle measurement assembly 30 is coupled to a corresponding rudder surface 50 and is capable of sensing the rotational angle of that rudder surface 50 relative to its mounting axis.

[0036] The structure of the base 10 is as follows Figure 4 The base 10 includes a cross-shaped base body 11 and a support frame body 12, wherein the support frame body 12 is located in the middle of the cross-shaped base body 11 and protrudes upward for a distance.

[0037] The cross-shaped seat body 11 includes a central cavity and four supports 111 evenly distributed around the central cavity. Each support 111 includes a base plate 1111, and a first side plate 1112, a second side plate 1113 and a third side plate 1114 extending vertically upward from the three side edges of the base plate 1111, respectively. The first side plate 1112 and the second side plate 1113 are arranged opposite to each other, and the two ends of the third side plate 1114 are respectively connected to the first side plate 1112 and the second side plate 1113, and the third side plate 1114 is close to the middle of the cross-shaped seat body 11.

[0038] The edges of adjacent base plates 1111 are connected to form a single unit. The first side plate 1112, the second side plate 1113, and the third side plate 1114 enclose a first installation space 1115, which opens outward. This first installation space 1115 is used to install the bearing seat 35 of the angle measurement assembly 30. The third side plate 1114 is provided with a plurality of first installation holes 11141 to facilitate the installation of the bearing seat 35. Each base plate 1111 is provided with a threaded hole for receiving a set screw 38.

[0039] Preferably, the width of the first installation space 1115 is slightly larger than the width of the bearing seat 35, so that there is a small gap between the bearing seat 35 and the first installation space 1115, so that the bearing seat 35 can move up and down in the first installation space 1115 without tilting.

[0040] The ends of all first side panels 1112 and second side panels 1113 toward the middle extend inward, protruding a distance beyond the third side panel 1114. The first side panel 1112 of any support 111 and the end of the second side panel 1113 of the adjacent support 111 near the middle are connected to each other as a whole.

[0041] The support frame 12 includes four vertical support rods 121 and a top support surface 122. The vertical support rods 121 extend vertically upward from the connection between the adjacent first side panels 1112 and second side panels 1113. The top support surface 122 is a square flat plate fixedly mounted on top of the vertical support rods 121.

[0042] The top support surface 122 has a central through-hole, surrounded by multiple positioning holes distributed circumferentially. Positioning blocks are located at each of the four corners of the square-shaped top support surface 122. Preferably, the positioning blocks are arcuate protrusions, with the inner diameter of the positioning blocks equal to the outer diameter of the tooling compartment 20. When the tooling compartment 20 is placed on the base 10, the four positioning blocks securely grip the bottom of the outer circumference of the tooling compartment 20.

[0043] Furthermore, a discontinuous groove is provided in the middle of one of the positioning blocks, dividing the positioning block into two spaced-apart arcuate protrusions. Correspondingly, a positioning key is provided at the bottom of the outer circumference of the tooling compartment 20. By snapping the positioning key into the discontinuous groove, the tooling compartment 20 is positioned and locked in place in the circumferential direction.

[0044] Two adjacent vertical support rods 121 , the top support surface 122 , and the corresponding first side plate 1112 and second side plate 1113 together enclose a second installation space 1116 , which is used to install the active member 31 and the driven member 32 .

[0045] See also Figure 1 、 Figure 2 as well as Figure 3 The tooling cabin 20 is a cylindrical structure, used for installing the steering engine 40 and the rudder surface 50 to be tested, and supporting the steering engine 40 and the rudder surface 50 on the base 10.

[0046] The tooling cabin 20 comprises a cylindrical body 21, with multiple positioning protrusions or holes distributed circumferentially around the bottom of the cylindrical body 21. During operation, the tooling cabin 20 can be placed directly onto the top support surface 122 of the base 10, or by first installing positioning pins in the positioning holes on the top support surface 122 and then placing the tooling cabin 20 onto the top support surface 122. Simultaneously, the outer circumference of the tooling cabin 20 is clamped by four positioning blocks, locking the tooling cabin 20 in place. The positioning holes and positioning blocks provided on the base 10 enable accurate axial and circumferential positioning of the tooling cabin 20, ensuring greater measurement accuracy.

[0047] The central through-hole of the tooling cabin 20 is divided into two sections, with the diameter of the upper section smaller than that of the lower section. A positioning step 211 is formed at the junction of the upper and lower sections, which is used to axially position the servo 40. The servo 40 passes through the central through-hole of the tooling cabin 20 from bottom to top, and is positioned by the positioning step 211. The outer circumference of the tooling cabin 20 is provided with multiple fixing holes, allowing the servo 40 to be fixed within the tooling cabin 20 using screws.

[0048] The outer circumference of the tooling compartment 20 is provided with four second mounting holes 212 for mounting the rudder surface 50. The mounting shaft of the rudder surface 50 is disposed within the second mounting holes 212 via a sliding bearing 213. The end of the mounting shaft is drivingly connected to the rudder shaft of the steering gear 40 and can be driven by the rudder shaft to rotate about the mounting shaft axis, thereby driving the rudder surface 50 to deflect.

[0049] The rudder surface 50 of the miniature high overload resistant servo 40 used in this embodiment is smaller and thinner than the ordinary rudder surface 50, and its main body is in an irregular wedge shape, such as Figure 6 As shown, it is not convenient to directly clamp and position to achieve coaxial output.

[0050] When the rudder angle measuring device of this embodiment is used to measure the deflection angle of the rudder surface 50, two threaded holes need to be provided on the bottom surface of the rudder surface 50, such as Figure 2 、 Figure 6 As shown, the two threaded holes are used to secure the active member 31 to transmit the deflection motion of the control surface 50 to the angle measurement assembly 30. The two threaded holes are arranged along the width of the control surface 50. Because the two threaded holes are located on the bottom surface of the control surface 50, they do not affect the aerodynamic characteristics of the control surface 50.

[0051] The angle measurement assembly 30 includes a driving element 31, a driven element 32, a driven shaft 33, a rolling bearing 34, an end cap 37, a bearing seat 35, and an angle encoder 36. The driving element 31 is fixedly mounted on the bottom surface of the rudder surface 50, and the driven element 32 meshes with the driving element 31. The driven element 32 is fixedly mounted on one end of the driven shaft 33, and the angle encoder 36 is fixedly mounted on the other end of the driven shaft 33. The middle portion of the driven shaft 33 is mounted on the bearing seat 35 via the rolling bearing 34. The bearing seat 35 is adjustably mounted on the support 111 of the base 10. The deflection of the rudder surface 50 is transmitted to the driven shaft 33 via the driving element 31 and the driven element 32, and the specific rotation angle is detected by the angle encoder 36.

[0052] See also Figure 1 、 Figure 3 as well as Figure 7 The active member 31 includes a bow-shaped piece 311 and mounting lugs 312 located on either side of the top of the bow-shaped piece 311. The bow-shaped piece 311 includes a top surface 3112 and an arcuate surface 3111, wherein the center of the arcuate surface 3111 is aligned with the central axis of the mounting shaft of the rudder surface 50. The arcuate surface 3111 of the bow-shaped piece 3111 is provided with a plurality of teeth or serves as a friction surface.

[0053] See also Figure 7 The mounting lugs 312 are flush with the top of the arched piece 311. Each mounting lug 312 is provided with a third mounting hole 3121. The spacing and size of these two third mounting holes 3121 are identical to the spacing and size of the two threaded holes on the bottom surface of the rudder surface 50, making them suitable for securing the active element 31 to the bottom of the rudder surface 50 via screws. Consequently, the active element 31 can rotate about the central axis corresponding to its arcuate surface 3111 as the rudder surface 50 deflects. Because the rotation axis of the active element 31 is coaxial with the mounting axis of the rudder surface 50, the rotation angles of the active element 31 and the rudder surface 50 are exactly the same. The rudder surface 50 and the active element 31 can also be secured together using a pin and pinhole interference fit. The threaded holes on the bottom surface of the rudder surface 50 and the third mounting holes 3121 of the active element 31 achieve positioning and securing of the active element 31 to the rudder surface 50. This connection method does not affect the aerodynamic characteristics of the rudder surface 50.

[0054] The driven member 32 is a driven gear or friction wheel that meshes with the driving member 31. The radius of the driven member 32 is equal to the rotational radius of the driving member 31. When the driving member 31 rotates, the driven member 32 rotates by the same angle. The driven member 32 is mounted on one end of the driven shaft 33 and secured to the driven shaft 33 with screws.

[0055] The structure of the bearing seat 35 is as follows Figure 5The bearing seat 35 is a flat plate structure. The upper portion of the bearing seat 35 is provided with an axial hole 351, and the rolling bearing 34 is fixedly disposed in the axial hole 351. Four fourth mounting holes 352 are evenly distributed around the axial hole 351 for mounting the end cover 37.

[0056] The lower part of the bearing seat 35 is provided with two vertically extending U-shaped grooves 353, and the bottom of the U-shaped groove 353 is provided with a strip-shaped through hole 354. The bearing seat 35 is set in the first installation space 1115 of a support 111 of the base 10, abutting against the third side plate 1114, and the bearing seat 35 is fixed on the base 10 by screws passing through the strip-shaped through hole 354 and the first installation hole 11141. Before the screws are tightened, the bearing 213 seat can be slid up and down, and the active part 31 and the driven part 32 are meshed without gap by sliding up and down. By adjusting the position of the screw relative to the strip-shaped through hole 354, the height position of the bearing seat 35 can be adjusted, thereby ensuring the gap-free meshing of the active part 31 and the driven part 32 and avoiding return errors. The bearing seat 35 and the first installation space 1115 of the base 10 are matched with a small gap to ensure that they can slide up and down without tilting.

[0057] The positioning screw 38 is installed on the bottom plate 1111 of the base 10 from bottom to top, and supports the bottom of the bearing seat 35. When the bearing seat 35 is installed, the height of the bearing seat 35 can be adjusted by adjusting the positioning screw 38.

[0058] See also Figure 2 The rolling bearing 34 is sleeved on the driven shaft 33 and rests on the two shoulders of the driven shaft 33. The driven shaft 33 and the rolling bearing 34 pass through the shaft hole 351 of the bearing seat 35. The end cover 37 is fixed to both sides of the bearing seat 35 by screws and fixes the rolling bearing 34.

[0059] The rotor of angle encoder 36 is sleeved onto driven shaft 33 and secured to the outward end of driven shaft 33 via a locking collar (not shown). The stator housing of angle encoder 36 is fixedly connected to base 10 or bearing seat 35 via a connector (not shown).

[0060] When using the rudder deflection angle measurement device of Example 1 to measure the rudder deflection angle of a miniature high-overload servo, two threaded holes are first machined into the bottom of the rudder surface 50. The servo 40 is then installed into the tooling compartment 20. The rudder surface 50 is then mounted onto the outer circumference of the tooling compartment 20 and connected to the rudder shaft of the servo 40. Next, the tooling compartment 20 is mounted onto the support frame 12 of the base 10. The driving element 31 is then fixed to the bottom of the rudder surface 50. The driven element 32, driven shaft 33, rolling bearing 34, end cap 37, bearing seat 35, and angle encoder 36 are assembled. The bearing seat 35 is then secured to the first mounting space 1115 of the base 10, with the driven element 32 positioned within the second mounting space 1116. The positioning screws 38 are then adjusted to ensure gapless engagement between the driven element 32 and the driving element 31. The bearing seat 35 is then secured to the third side plate 1114 of the support 111 of the base 10 using screws. The stator housing of the angle encoder 36 is fixedly connected to the base 10 or the bearing seat 35. The steering engine 40 is started to drive the rudder surface 50 to rotate, and the rudder deflection angle of the rudder surface 50 is measured by the angle encoder 36.

[0061] Compared with the prior art, the rudder angle measurement device for a miniature high-overload resistant servo of the first embodiment can collect and convert the angle of rudder surface deflection using a non-coaxial measurement method, and can simultaneously collect four channels of rudder angle data.

[0062] Example 2

[0063] This embodiment 2 relates to a rudder angle measurement device for a miniature high-overload resistant servo. Based on the embodiment 1, it also has the following differences: the angle measurement component 30 also includes an elastic support sheet 39, and the base 10 also includes an auxiliary bracket 13.

[0064] The structure of the elastic support piece 39 is shown in FIG. Figure 1 、 Figure 2 as well as Figure 8 shown.

[0065] The elastic support sheet 39 is a stepped sheet formed by bending a thin elastic sheet multiple times. One end of the elastic support sheet 39 is fixed to the inner end surface of the angle encoder 36, and the other end is fixed to the side of the bearing seat 35 via screws. Correspondingly, the lower portion of the bearing seat 35 is provided with an elastic sheet fixing hole 355, located between the two U-shaped grooves 353.

[0066] The elastic support piece 39 can constrain the rotational freedom of the stator housing of the angle encoder 36, and at the same time can provide auxiliary support for the angle encoder 36, thereby avoiding measurement errors caused by bending deformation of the driven shaft 33 under the action of gravity of the angle encoder 36, and further improving measurement accuracy.

[0067] The elastic support of the angle encoder 36 is achieved by the elastic support piece 39 , which can provide support without generating excess stress on the driven shaft 33 . The elastic support piece 39 is a stepped structure, which provides higher rigidity and is easy to install on the base 10 .

[0068] The elastic supporting piece 39 may be made of an elastic metal material or a plastic material with a certain elasticity and rigidity.

[0069] The auxiliary bracket 13 includes a horizontal bracket 131 and a vertical bracket 132. The horizontal bracket 131 is fixed to the bottom of the base 10 by screws, and the vertical bracket 132 is fixed to the horizontal bracket 131 by screws. Figure 1 and Figure 2 shown.

[0070] The horizontal bracket 131 and the vertical bracket 132 can realize the axial horizontal placement of the rudder angle measuring device of this embodiment 2, which is convenient for adjusting the positioning screw 38 and can also be used as handles for easy transportation and carrying.

[0071] In addition, during the installation process, due to the provision of the horizontal bracket 131 and the vertical bracket 132 , the rudder angle measuring device of this embodiment can be placed both horizontally and vertically, which facilitates the assembly and adjustment of the positioning screw 38 .

[0072] Compared with the prior art, the rudder angle measuring device for a miniature high-overload resistant servo of the second embodiment can overcome the measurement error caused by the bending deformation of the driven shaft 33 and is easy to install and carry.

[0073] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any changes or substitutions that can be easily thought of by any technician familiar with this technical field within the technical scope disclosed by the present invention should be covered by the scope of protection of the present invention.

Claims

1. A device for measuring the deflection angle of a rudder surface of a miniature high-overload servo, wherein the rudder surface is a thin sheet and the main body is an irregular wedge shape; characterized in that:

4. The repairing kit for automotive dents, according to claim 1, wherein a bottom of the foot stand comprises a through-hole, and the two foot pieces comprise two bosses, wherein the bosses comprise a through-hole, a screw bolt, and a nut. The through-hole comprises a screw bolt, and the bosses comprise a through-hole, a screw bolt, and a nut. The first side panel, the second side panel and the third side panel extend upward, and the first side panel, the second side panel and the third side panel enclose a first installation space with an opening facing outward, and the first installation space is used to install the bearing seat, and the height of the bearing seat relative to the first installation space is adjustable, and there is a small gap between the bearing seat and the first installation space; the active part includes a bow-shaped piece and mounting lugs located on both sides of the top of the bow-shaped piece, and a third mounting hole is provided on the mounting lug for fixing the active part to the bottom of the rudder surface by screws; the driven part is arranged at one end of the driven shaft and meshes with the active part; the center of the arc surface of the active part is on the rotation axis of the rudder surface, and the rotation radius of the driven part is equal to the rotation radius of the active part; the angle encoder is arranged at the other end of the driven shaft and can measure the angle of rotation of the driven shaft.

2. The device for measuring the rudder angle of a miniature high-overload servo according to claim 1, characterized in that: The support frame includes a vertical support rod and a top support surface. The vertical support rod extends vertically upward from the top of the cross-shaped seat body. The top support surface is fixedly arranged on the top of the vertical support rod.

3. The device for measuring the rudder angle of a miniature high-overload servo according to claim 2, characterized in that: The top support surface has a central through hole, and a plurality of first positioning holes are evenly distributed circumferentially around the central through hole; positioning blocks are provided at the four corners of the top support surface; the first positioning holes are adapted to the positioning protrusions at the bottom of the tooling cabin, and the positioning blocks are suitable for clamping the outer circumferential surface of the tooling cabin.

4. The device for measuring the rudder angle of a micro-miniature high-overload servo according to claim 1, characterized in that: The arc surface of the arc-shaped piece is provided with a plurality of teeth or the arc surface is a friction surface.

5. The device for measuring the rudder angle of a micro-miniature high-overload servo according to claim 1, characterized in that: The angle measurement assembly further includes an elastic support sheet, one end of which is fixedly connected to the angle encoder, and the other end of which is fixedly connected to the bearing seat.

6. The device for measuring the rudder angle of a micro-miniature high-overload servo according to claim 1, characterized in that: The base further includes an auxiliary bracket, which includes a horizontal bracket and a vertical bracket; the horizontal bracket is fixedly arranged at the bottom of the base, and the vertical bracket is fixedly arranged at one side end of the horizontal bracket.

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