Zero adjustment tool for servo actuator

Abstract

The utility model relates to the technical field of aerospace, in particular to a servo actuator zero position adjusting tool which comprises a guide rail, a plurality of sliding blocks, a plurality of sets of measuring pins and a vernier caliper. The upper surface of the guide rail is provided with a downwards-concave sliding groove, and each sliding block is located in the sliding groove and slides in the sliding groove in the extending direction of the sliding groove. Each group of measuring pins is provided with two same pin shafts, the lower end of one pin shaft is fixed to the upper surface of one sliding block, the upper end of each pin shaft vertically extends upwards, and the two pin shafts of each group of measuring pins are used for clamping the two ends of a servo actuator of a rocket; one end of the vernier caliper is fixed to the outer side surface of one pin shaft of one group of measuring pins, and the other end of the vernier caliper is clamped to the outer side surface of the other pin shaft of the group of measuring pins. According to the invention, the accuracy of zero distance measurement of the servo actuator of the rocket can be ensured, so that the success of rocket launching and aerospace tasks is ensured.

Description

Technical Field

[0001] The present application relates to the field of aerospace technology, and in particular to a servo actuator zero position adjustment tool. Background Art

[0002] The rocket's servo actuator is a device used to control the rocket's flight attitude, pitch and steering. It helps the rocket maintain stability and precise attitude control during flight by sensing the surrounding environment and responding to flight commands, ensuring that the rocket can accurately reach its target. Therefore, during the final assembly of the solid carrier rocket engine, whether the zero position of the rocket's servo actuator can be accurately adjusted to meet the relevant installation requirements is crucial to the success of the rocket launch and space mission.

[0003] like Figure 1 As shown, in the prior art, the pin shafts of two cylindrical pins 110 are often passed through the pin holes of the circular rings 120 at the front and rear ends of the rocket's servo actuator, so that the two ends of the rocket's servo actuator are clamped between the two cylindrical pins 110, and a vernier caliper 130 is used to measure the length L1 between the farthest ends of the pin shafts of the two cylindrical pins 110, and then the diameter L2 of the pin shafts of the cylindrical pins 110 is subtracted to obtain the zero position distance of the rocket's servo actuator, thereby completing the zero position measurement of the rocket's servo actuator.

[0004] However, since the pin shaft of the cylindrical pin 110 passes through a circular ring 120 with no freedom restriction, and the weight and size of the rocket's servo actuators are different and there is no available reference plane, it is unrealistic to ensure the parallelism of the pin shafts of the two cylindrical pins 110 only with the naked eye. There will always be tilt deviations in multiple directions, and the pin shaft of the cylindrical pin 110 is movable when the vernier caliper 130 is measured, so the accuracy of the measured data cannot be guaranteed, which seriously affects the accuracy of the zero-position distance measurement value of the rocket's servo actuator.

[0005] Therefore, how to ensure the accuracy of the zero-position distance measurement of the rocket's servo actuator to ensure the success of the rocket launch and space mission is a technical problem that technicians in this field urgently need to solve. Utility Model Content

[0006] The present application provides a servo actuator zero position adjustment tool to ensure the accuracy of the zero position distance measurement of the rocket's servo actuator, thereby ensuring the success of the rocket launch and space mission.

[0007] In order to solve the above technical problems, this application provides the following technical solutions:

[0008] A servo actuator zero position adjustment tool comprises: a guide rail, a plurality of sliders, a plurality of groups of measuring pins and a vernier caliper; the upper surface of the guide rail has a downwardly concave groove, each slider is located in the groove and slides in the groove along the extension direction of the groove; each group of measuring pins has two identical pin shafts, the lower end of a pin shaft is fixed to the upper surface of a slider, the upper end of each pin shaft extends vertically upward, and the two pin shafts of each group of measuring pins are used to clamp the two ends of the servo actuator of a rocket; one end of the vernier caliper is fixed to the outer side surface of a pin shaft of a group of measuring pins, and the other end of the vernier caliper is clamped to the outer side surface of another pin shaft of the group of measuring pins.

[0009] In the servo actuator zero position adjustment tool as described above, preferably, the guide rail is a rectangular parallelepiped structure, and the slide groove extends along the length direction of the rectangular parallelepiped and passes through both ends of the guide rail.

[0010] In the servo actuator zero position adjustment fixture as described above, preferably, the upper portion of the slide slot is narrower than the lower portion of the slide slot.

[0011] As described above, in the servo actuator zero position adjustment tool, preferably, the width of the upper portion of the slider is smaller than the width of the lower portion of the slider, the lower portion of the slider is located in the lower portion of the slide groove, and the upper portion of the slider is located in the upper portion of the slide groove.

[0012] As described above, in the servo actuator zero position adjustment tool, preferably, the upper surface of the slider has a downwardly concave threaded hole, the lower end of the pin shaft of the measuring pin has a thread, and the lower end of the pin shaft of the measuring pin is screwed into the threaded hole on the slider to fix the pin shaft to the slider.

[0013] In the servo actuator zero position adjustment fixture as described above, preferably, the threaded hole penetrates to the lower surface of the slider.

[0014] As described above, in the servo actuator zero position adjustment tool, preferably, each group of measuring pins also has two identical mounting rings, the pin shaft passes through the pin hole of the mounting ring and is fixedly connected to the mounting ring, the part of the pin shaft located below the mounting ring has a thread, and the part of the pin shaft located above the mounting ring is a smooth surface.

[0015] As described above, in the servo actuator zero position adjustment tool, preferably, the diameters of the pin shafts of different groups of measuring pins are different, the inner diameters of the mounting rings of different groups of measuring pins are different, and the outer diameters of the mounting rings of different groups of measuring pins are the same.

[0016] As described above, in the servo actuator zero position adjustment tool, preferably, the diameters of the parts of the pin shafts of different groups of measuring pins located below the mounting ring are the same, the diameters of the parts of the pin shafts of different groups of measuring pins located above the mounting ring are different, the inner diameters of the mounting rings of different groups of measuring pins are the same, and the outer diameters of the mounting rings of different groups of measuring pins are the same.

[0017] As described above, in the servo actuator zero position adjustment tool, preferably, a portion of the circumference of the pin shaft located at the mounting ring is recessed inwardly with a positioning plane, and the pin hole of the mounting ring protrudes inwardly with a positioning plane, and the positioning plane of the pin shaft matches the positioning plane of the pin hole of the mounting ring.

[0018] Compared with the above-mentioned background technology, the servo actuator zero position adjustment tooling provided in the present application is placed on a guide rail, so that the upper surface of the guide rail can be used as a reference plane, and the guide rail can also ensure the parallelism of the two pin shafts to avoid tilt deviation, and the vernier caliper is fixed to a pin shaft to avoid the position state change during the vernier caliper measurement, thereby ensuring the accuracy of the zero position distance measurement value of the rocket's servo actuator, thereby ensuring the success of the rocket launch and space mission. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present application. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic diagram of a servo actuator zero position adjustment tool in the prior art;

[0021] Figure 2 is a schematic diagram of a servo actuator zero position adjustment tooling provided in an embodiment of the present application;

[0022] Figure 3 is a schematic diagram of a guide rail of a servo actuator zero position adjustment tooling provided in an embodiment of the present application;

[0023] Figure 4 is a schematic diagram of a slider of a servo actuator zero position adjustment tooling provided in an embodiment of the present application;

[0024] Figure 5 is a front view of multiple groups of measuring pins of a servo actuator zero position adjustment tool provided in an embodiment of the present application;

[0025] Figure 6 is a top view of multiple groups of measuring pins of a servo actuator zero position adjustment tool provided in an embodiment of the present application;

[0026] Figure 7 It is a schematic diagram of the use of the servo actuator zero position adjustment tooling provided in an embodiment of the present application. DETAILED DESCRIPTION

[0027] The embodiments of the present application are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. In addition, spatial relationship terms such as "upper", "lower", "left", "right", "front", "back", etc. are used to facilitate the description to explain the positional relationship between two components. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and are not to be construed as limitations on the present application.

[0028] like Figure 2 , Figure 4 and Figure 7 As shown, the present application provides a servo actuator zero position adjustment tool, including: a guide rail 210, a plurality of sliders 220, a plurality of groups of measuring pins 230 and a vernier caliper 240.

[0029] Among them, Figure 3 As shown, the upper surface of the guide rail 210 has a downwardly concave slide groove 211; each slider 220 is located in the slide groove 211 and slides in the slide groove 211 along the extension direction of the slide groove 211; Figure 5 As shown, each group of measuring pins 230 has two identical pin shafts 231, the lower ends of the pin shafts 231 are fixed to the upper surface of a slider 220, the upper ends of the pin shafts 231 extend vertically upward, and the two pin shafts 231 of each group of measuring pins 230 are used to clamp the two ends of the servo actuator of the rocket; one end of the vernier caliper 240 is fixed to the outer side surface of a pin shaft 231 of a group of measuring pins 230, and the other end of the vernier caliper 240 is clamped to the outer side surface of another pin shaft 231 of the group of measuring pins 230, so that the length L1 on the vernier caliper 240 can be read, and then the diameters of the two pin shafts 231 of the group of measuring pins 230 are subtracted to obtain the zero position distance of the servo actuator of the rocket.

[0030] Optionally, the guide rail 210 is a rectangular parallelepiped structure, and the slide groove 211 extends along the length direction of the rectangular parallelepiped. Optionally, the slide groove 211 passes through both ends of the guide rail 210, so that the slider 220 can be easily loaded into the slide groove 211 from both ends of the guide rail 210. Optionally, the upper part of the slide groove 211 is narrower than the lower part of the slide groove 211, so as to prevent the slider 220 from falling off from the upper part of the slide groove 211.

[0031] As an example, the guide rail 210 is 1000 cm long, 80 cm wide and 50 cm high, and the slide chute 211 is 1000 cm long, 60 cm wide at the bottom, 20 cm high at the bottom, 30 cm wide at the top and 10 cm high at the top.

[0032] In addition, if Figure 4As shown, the upper surface of the slider 220 has a threaded hole 221 that is concave downward, and the lower end of the pin shaft 231 of the measuring pin 230 has a thread. The lower end of the pin shaft 231 of the measuring pin 230 is screwed into the threaded hole 221 on the slider 220 to achieve a fixed connection between the pin shaft 231 and the slider 220. Optionally, the threaded hole 221 passes through the lower surface of the slider 220, so that the length of the pin shaft 231 of the measuring pin 230 that can be screwed into the threaded hole 221 is longer, ensuring the verticality of the pin shaft 231 of the measuring pin 230. Optionally, the width of the upper part of the slider 220 is smaller than the width of the lower part of the slider 220, so that the lower part of the slider 220 is located in the lower part of the slide groove 211, and the upper part of the slider 220 is located in the upper part of the slide groove 211. Still optionally, the upper end of the threaded hole 221 is located on the upper surface of the upper part of the slider 220.

[0033] As an example, the slider 220 has a length of 70 cm, a width of 59.5 cm at the lower portion, a height of 18 cm at the lower portion, a width of 29.5 cm at the upper portion, a height of 7 cm at the upper portion, and a diameter of the threaded hole 221 of 16 cm.

[0034] In addition, if Figure 5 and Figure 6 As shown, each group of measuring pins 230 also has two identical mounting rings 232, and the pin shaft 231 passes through the pin hole of the mounting ring 232 and is fixedly connected to the mounting ring 232, so that the lower end of the pin shaft 231 can be screwed into the threaded hole 221 of the slider 220. Optionally, the portion of the pin shaft 231 located below the mounting ring 232 has a thread to achieve a fixed connection with the slider 220, and the portion of the pin shaft 231 located above the mounting ring 232 is a smooth surface to facilitate measurement. Optionally, the diameters of the pin shafts 231 of different groups of measuring pins 230 are different, the inner diameters of the mounting rings 232 of different groups of measuring pins 230 are different, and the outer diameters of the mounting rings 232 of different groups of measuring pins 230 are the same. Alternatively, the diameters of the portions of the pin shafts 231 of different groups of measuring pins 230 located below the mounting ring 232 are the same, the diameters of the portions of the pin shafts 231 of different groups of measuring pins 230 located above the mounting ring 232 are different, the inner diameters of the mounting rings 232 of different groups of measuring pins 230 are the same, and the outer diameters of the mounting rings 232 of different groups of measuring pins 230 are the same. Alternatively, the circumference of the portion of the pin shaft 231 located at the mounting ring 232 is inwardly recessed with a positioning plane, the pin hole of the mounting ring 232 is inwardly protruding with a positioning plane, and the positioning plane of the pin shaft 231 cooperates with the positioning plane of the pin hole of the mounting ring 232 to prevent the mounting ring 232 from rotating, thereby improving the measurement accuracy.

[0035] As an example, the diameter of the part of the pin shaft 231 of different groups of measuring pins 230 located below the mounting ring 232 is 16 cm, the diameter of the part of the pin shaft 231 of the first group of measuring pins 230 located above the mounting ring 232 is 15 cm, the inner diameter of the mounting ring 232 of the first group of measuring pins 230 is 15 cm, and the outer diameter of the mounting ring 232 of the first group of measuring pins 230 is 60 cm, the diameter of the part of the pin shaft 231 of the second group of measuring pins 230 located above the mounting ring 232 is 30 cm, the inner diameter of the mounting ring 232 of the second group of measuring pins 230 is 30 cm, and the outer diameter of the mounting ring 232 of the second group of measuring pins 230 is 60 cm, the diameter of the part of the pin shaft 231 of the third group of measuring pins 230 located above the mounting ring 232 is 8 cm, the inner diameter of the mounting ring 232 of the third group of measuring pins 230 is 8 cm, and the outer diameter of the mounting ring 232 of the third group of measuring pins 230 is 60 cm.

[0036] In addition, the length of the pin shafts 231 of different groups of measuring pins 230 located below the mounting ring 232 is 25 cm, the length of the pin shafts 231 located above the mounting ring 232 is 150 cm, and the thickness of the mounting ring 232 is 5 cm.

[0037] like Figure 7 As shown, when using the servo actuator zero position adjustment tooling of the present application, the pin shaft 231 of the measuring pin 230 is fixed to the slider 220, the slider 220 is installed in the slide groove 211 of the guide rail 210, the two pin shafts 231 of a set of measuring pins 230 are adjusted to a basic distance, the hole of the circular ring of the rocket's servo actuator is aligned with the pin shaft 231 and passed onto the pin shaft 231, the rocket's servo actuator is placed on the guide rail 210, and the vernier caliper 240 is used to measure the distance L1 between the farthest ends of the two pin shafts 231. The distance L1 minus the radius of the two pin shafts 231, that is, the diameter L2 of one pin shaft 231, can obtain the value of the zero position distance of the rocket's servo actuator.

[0038] Since the servo actuator of the rocket is placed on the guide rail 210, the upper surface of the guide rail 210 can be used as a reference plane, and the parallelism of the two pins 231 can be ensured by the guide rail 210 to avoid tilt deviation, and the vernier caliper 240 is fixed to a pin 231 to avoid the position state change of the vernier caliper 240 during measurement, thereby ensuring the accuracy of the zero-position distance measurement value of the rocket's servo actuator, thereby ensuring the success of the rocket launch and space mission.

[0039] It is obvious to those skilled in the art that the present application is not limited to the details of the exemplary embodiments described above, and that the present application can be implemented in other specific forms without departing from the spirit or essential features of the present application. Therefore, the embodiments should be regarded as exemplary and non-limiting in all respects, and the scope of the present application is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present application. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0040] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description 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 may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A servo actuator zero position adjustment tool, characterized in that: include: Guide rails, multiple slides, multiple sets of measuring pins and vernier calipers; The upper surface of the guide rail has a downwardly concave slide groove, each slider is located in the slide groove and slides in the slide groove along the extension direction of the slide groove; Each set of measuring pins has two identical pins, the lower end of one pin is fixed to the upper surface of a slider, the upper end of each pin extends vertically upward, and the two pins of each set of measuring pins are used to clamp the two ends of the servo actuator of the rocket; One end of the vernier caliper is fixed to the outer side surface of a pin shaft of a group of measuring pins, and the other end of the vernier caliper is clamped to the outer side surface of another pin shaft of the group of measuring pins.

2. The servo actuator zero position adjustment tool according to claim 1, characterized in that: The guide rail is a rectangular parallelepiped structure, and the slide groove extends along the length direction of the rectangular parallelepiped and passes through both ends of the guide rail.

3. The servo actuator zero position adjustment tool according to claim 2, characterized in that: The upper portion of the chute is narrower than the lower portion of the chute.

4. The servo actuator zero position adjustment tool according to claim 3, characterized in that: The width of the upper portion of the slider is smaller than the width of the lower portion of the slider, the lower portion of the slider is located in the lower portion of the slide groove, and the upper portion of the slider is located in the upper portion of the slide groove.

5. The servo actuator zero position adjustment tool according to any one of claims 1 to 4, characterized in that: The upper surface of the slider has a downwardly concave threaded hole, the lower end of the pin shaft of the measuring pin has a thread, and the lower end of the pin shaft of the measuring pin is screwed into the threaded hole on the slider to fix the pin shaft and the slider.

6. The servo actuator zero position adjustment tool according to claim 5, characterized in that: The threaded hole penetrates to the lower surface of the slider.

7. The servo actuator zero position adjustment tool according to any one of claims 1 to 4, characterized in that: Each set of measuring pins also has two identical mounting rings, the pin shafts pass through the pin holes of the mounting rings and are fixedly connected to the mounting rings, the portion of the pin shaft located below the mounting rings has threads, and the portion of the pin shaft located above the mounting rings is a smooth surface.

8. The servo actuator zero position adjustment tool according to claim 7, characterized in that: The diameters of the pin shafts of different groups of measuring pins are different, the inner diameters of the mounting rings of different groups of measuring pins are different, and the outer diameters of the mounting rings of different groups of measuring pins are the same.

9. The servo actuator zero position adjustment tool according to claim 7, characterized in that: The diameters of the parts of the pin shafts of different groups of measuring pins located below the mounting rings are the same, the diameters of the parts of the pin shafts of different groups of measuring pins located above the mounting rings are different, the inner diameters of the mounting rings of different groups of measuring pins are the same, and the outer diameters of the mounting rings of different groups of measuring pins are the same.

10. The servo actuator zero position adjustment tool according to claim 7, characterized in that: A portion of the circumference of the pin shaft located at the mounting ring is inwardly recessed with a positioning plane, and the pin hole of the mounting ring protrudes inwardly with a positioning plane, and the positioning plane of the pin shaft matches the positioning plane of the pin hole of the mounting ring.

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