Detection tool of hemispherical resonator gyroscope electrode base and machining method of electrode base

Abstract

The invention relates to the technical field of precision machining of hemispherical resonators, in particular to a detection tool for an electrode base of a hemispherical resonator gyroscope and a machining method for the electrode base. An annular groove is formed in one face of the detection tool, an outer cone part is formed in the middle of the annular groove, and an inner circle part is formed on the outer circle of the inner side of the annular groove; the outer cone part is matched with an inner cone hole in an external electrode base, and the inner circle part is matched with an outer circle part on the external electrode base. The outer circle part and the inner taper hole in the electrode base can be detected at the same time through the detection tool, and compared with the mode that a vernier caliper or a three-coordinate detector is used for measuring the electrode base, the measurement precision and the measurement efficiency are higher.

Description

Technical Field

[0001] The present invention relates to the technical field of precision machining of hemispherical resonant gyroscopes, and particularly relates to a detection tooling for an electrode base of a hemispherical resonant gyroscope and a machining method for the electrode base. Background Art

[0002] A hemispherical resonant gyroscope (HRG) is an inertial navigation component based on the Coriolis effect and is a high-precision solid-state gyroscope. Due to its advantages of having no high-speed rotor, no bearings and friction-related components, and having a simple structure, long service life, high reliability, and radiation resistance, it is widely used in the fields of aerospace, military, and high-precision instruments.

[0003] The HRG mainly consists of a hemispherical resonator, an electrode base, and a fixed base. Among them, the hemispherical resonator is the core sensitive component of the gyroscope, having a high quality factor Q value and a stable natural vibration frequency. The electrode base is a key component of the hemispherical resonant gyroscope. The connection quality between it and the hemispherical resonator affects the performance, accuracy, service life, etc. of the HRG. The dimensional accuracy requirements for the connection part between the electrode base and the resonator are extremely high, and it is difficult to ensure the machining quality with existing machining means. Summary of the Invention

[0004] The present invention provides a detection tooling for an electrode base of a hemispherical resonant gyroscope and a machining method for the electrode base to solve the technical problems mentioned in the background art.

[0005] To achieve the above object, the technical solution of the present invention is realized as follows:

[0006] The present invention provides a detection tooling for an electrode base of a hemispherical resonant gyroscope. An annular groove is formed on one surface of the detection tooling. An outer cone part is formed in the middle of the annular groove, and an inner circular part is formed on the outer circle inside the annular groove. The outer cone part is adapted to an inner cone hole on an external electrode base, and the inner circular part is adapted to an outer circular part on the external electrode base.

[0007] Further, the detection tooling further includes a holding part, and the holding part is formed on the back side of the annular groove.

[0008] Further, the taper of the outer cone part is smaller than the taper of the inner cone hole, and the side of the outer cone part away from the holding part is in line contact with the side of the inner cone hole away from the holding part.

[0009] Further, the detection tooling is made of a transparent material.

[0010] Further, the material of the detection tooling is quartz.

[0011] Further, the outer circle of the detection tooling is cylindrical or arc-shaped.

[0012] On the other hand, the present invention also provides a processing method for an electrode base in a hemispherical resonant gyroscope, which is processed by means of a detection tooling, and specifically includes the following steps:

[0013] S1. Process the detection tooling by a set method;

[0014] S2. Install the detection tooling on the processing equipment, establish a machining coordinate system for the inner conical surface of the inner conical hole on the electrode base according to the position and pose of the detection tooling by using a contact probe, and then take out the detection tooling;

[0015] S3. Program the processing parameters of the semi-finished electrode base according to the machining coordinate system of the inner conical surface, install the semi-finished electrode base on the processing equipment, and start processing;

[0016] S4. Online detect whether the size of the inner conical surface of the inner conical hole meets the design requirements. If it meets, enter S5; otherwise, enter S6;

[0017] S5. Assemble the detection tooling with the processed electrode base to obtain an assembly, measure the assembly size of the assembly by using a measuring tool, and judge whether the assembly size meets the design requirements. If it meets, the processing is ended to obtain a qualified electrode base; otherwise, enter S6;

[0018] S6. Start the unqualified product process, judge whether the defect can be repaired. If it can, start the repair process and enter S3; otherwise, start to end the processing to obtain a scrapped electrode base.

[0019] Further, the implementation manner of S1 is:

[0020] Manufacture the detection tooling by using molten quartz, and ensure the outer cone diameter of the outer cone part on the detection tooling and the end face distance between the outer cone part and the inner circle part on the same side.

[0021] Further, the assembly size in S5 is the distance L between the right end face of the outer circle of the detection tooling and the right end face of the outer circle part.

[0022] Further, the measuring tool in S5 is a vernier caliper and / or a coordinate measuring instrument.

[0023] Advantages of the present invention:

[0024] 1. The present invention discloses a detection tooling for an electrode base of a hemispherical resonant gyroscope. The detection tooling can be used to detect the outer circle part and the inner conical hole on the electrode base at the same time. Compared with measuring the electrode base by using a vernier caliper or a coordinate measuring instrument, the measuring accuracy and measuring efficiency of the present invention are higher, thereby improving the processing quality of the electrode base.

[0025] 2. Another aspect of the present invention also provides a processing method for an electrode base in a hemispherical resonant gyro. On the premise that the electrode base is installed on a detection tooling to obtain an assembly, the electrode base can be double-detected by using a measuring tool and the assembly, reducing the measurement items of the electrode base for the measurement personnel, with lower measurement intensity and higher detection efficiency for the measurement personnel, and being more accurate. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a structural cross-sectional view of the detection tooling in the first form in the embodiment of the present invention;

[0027] Figure 2 It is a structural cross-sectional view of the detection tooling in the second form in the embodiment of the present invention;

[0028] Figure 3 It is a structural cross-sectional view of the electrode base in the present invention;

[0029] Figure 4 It is an assembly schematic diagram of the detection tooling in the first form and the electrode base in the embodiment of the present invention;

[0030] Figure 5 It is an assembly schematic diagram of the detection tooling in the second form and the electrode base in the embodiment of the present invention;

[0031] Figure 6 It is an assembly schematic diagram of the hemispherical resonator and the electrode base in the embodiment of the present invention;

[0032] Figure 7 It is a flow block diagram of a processing method for an electrode base in a hemispherical resonant gyro in the present invention.

[0033] DESCRIPTION OF REFERENCE NUMERALS:

[0034] 1. Detection tooling; 11. Annular groove; 12. Outer cone part; 13. Inner circle part; 14. Holding part;

[0035] 2. Electrode base; 21. Inner cone hole; 22. Outer circle part;

[0036] 3. Hemispherical resonator. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0037] For ease of understanding of the present invention, the present invention will be described more comprehensively below with reference to the relevant drawings. Preferred embodiments of the present invention are shown in the drawings. However, the present invention can be implemented in many other different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

[0038] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element.

[0039] It should be understood that the orientation or positional relationship indicated by terms such as "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0040] In addition, the terms "first" and "second" are only used for descriptive purposes and should not be construed as indicating or implying relative importance or implicitly specifying the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present invention, the meaning of "a plurality" is two or more unless otherwise specifically defined.

[0041] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by those of ordinary skill in the technical field to which the present invention belongs. The terms used in the description of the present invention herein are only for the purpose of describing specific embodiments and are not intended to limit the present invention. The term "and / or" used herein includes any and all combinations of one or more of the related listed items.

[0042] It should also be noted that in the embodiments of the present application, the same reference numerals are used to represent the same components or the same parts. For the same parts in the embodiments of the present application, only one of the parts or components may be marked with a reference numeral in the drawings. It should be understood that the reference numerals are equally applicable to other identical parts or components.

[0043] Referring to Figures 1 to 5 , the embodiments of the present application provide a detection tool for a hemispherical resonant gyro electrode base. An annular groove 11 is formed on one surface of the detection tool 1. An outer cone portion 12 is formed in the middle of the annular groove 11. An inner circular portion 13 is formed on the inner outer ring of the annular groove 11. The outer cone portion 12 is adapted to the inner conical hole 21 on the external electrode base 2, and the inner circular portion 13 is adapted to the outer circular portion 22 on the external electrode base 2. The structural cross-sectional view of the electrode base 2 is shown in Figure 3 as shown.

[0044] The present invention discloses a detection tooling for the electrode base of a hemispherical resonant gyroscope. By using this detection tooling, the outer circular part 22 and the inner tapered hole 21 on the electrode base 2 can be detected simultaneously. Compared with measuring the electrode base 2 using a vernier caliper or a coordinate measuring instrument, the measuring accuracy and efficiency of the present invention are higher.

[0045] In some embodiments, the detection tooling further includes a holding part 14 formed on the back side of the annular groove 11, which facilitates the operator to operate the detection tooling 1 through the holding part 14 and also facilitates fixing the detection tooling 1 on the processing equipment through the holding part 14.

[0046] In some embodiments, the taper of the outer tapered part 12 is smaller than that of the inner tapered hole 21, and the side of the outer tapered part 12 away from the holding part 14 is in line contact with the side of the inner tapered hole 21 away from the holding part 14.

[0047] In some embodiments, the detection tooling 1 is made of a transparent material. The detection tooling 1 made of a transparent material can facilitate the operator to directly view the installation and docking situation of the detection tooling 1 and the electrode base 2.

[0048] In some embodiments, the detection tooling 1 is made of quartz, and the material of the quartz is the same as that of the electrode base 2 and the hemispherical resonator 3, which can better reflect the actual assembly situation of the HRG during assembly. In addition, it is not limited to quartz, and it can also be made of transparent acrylic material or other transparent materials.

[0049] In some embodiments, referring to Figures 1 to 5 , the detection tooling 1 has two forms, namely the first form and the second form. The detection tooling 1 in the first form is as shown in Figure 1 . The outer ring of the detection tooling 1 in the first form is cylindrical. The assembly schematic diagram of the detection tooling 1 in the first form and the electrode base 2 is shown in Figure 4 . The detection tooling 1 in the second form is as shown in Figure 2 . The outer ring of the detection tooling 1 in the second form is arc-shaped. The assembly schematic diagram of the detection tooling 1 in the second form and the electrode base 2 is shown in Figure 5 . The detection tooling 1 in the second form is similar in shape to the hemispherical resonator 3 on the hemispherical resonant gyro HRG. That is, the central rod part on the hemispherical resonator 3 can be cut off to obtain the detection tooling 1 in the second form. In addition, the defective hemispherical resonator 3 can be reworked to obtain the detection tooling 1 in the second form, which improves the utilization rate of the defective hemispherical resonator 3. Further, the processing cost of the detection tooling 1 is also reduced. The assembly schematic diagram of the hemispherical resonator 3 and the electrode base 6 is shown in Figure 6 .

[0050] Referring to Figure 7, on the other hand, the present invention also provides a processing method for an electrode base in a hemispherical resonant gyroscope, which is processed by means of a detection tooling 1, and specifically includes the following steps:

[0051] S1. Process the detection tooling 1 by a set method;

[0052] S2. Install the detection tooling 1 on the processing equipment, establish the machining coordinate system of the inner conical surface of the inner conical hole 21 on the electrode base 2 according to the position and posture of the detection tooling 1 by using a contact probe, and then take out the detection tooling 1;

[0053] S3. Program the processing parameters of the semi-finished product of the electrode base 2 according to the machining coordinate system of the inner conical surface, install the semi-finished product of the electrode base 2 on the processing equipment, and start processing;

[0054] S4. Online detect whether the size of the inner conical surface of the inner conical hole 21 meets the design requirements. If it meets, enter S5; otherwise, enter S6;

[0055] S5. Assemble the detection tooling 1 and the processed electrode base 2 to obtain an assembled body, measure the assembly size of the assembled body by using a measuring tool, and judge whether the assembly size meets the design requirements. If it meets, the processing is completed, and a qualified electrode base 2 is obtained; otherwise, enter S6;

[0056] S6. Start the unqualified product process, judge whether the defect can be repaired. If it can, start the repair process and enter S3; otherwise, start to end the processing, and a scrapped electrode base 2 is obtained.

[0057] In some embodiments, the implementation manner of S1 is:

[0058] Manufacture the detection tooling 1 by using molten quartz, and ensure the outer cone diameter of the outer cone part 12 on the detection tooling 1 and the end face distance between the outer cone part 12 and the inner circle part 13 on the same side.

[0059] In some embodiments, the assembly size in S5 is the distance L between the right end face of the outer circle of the detection tooling 1 and the right end face of the outer circle part 22.

[0060] In some embodiments, the measuring tool in S5 is a vernier caliper and / or a coordinate measuring instrument.

[0061] For the processing method of the electrode base in the hemispherical resonant gyroscope provided by the present invention, on the premise that the electrode base 2 is installed on the detection tooling 1 to obtain an assembled body, the electrode base 2 can be double-detected by using a measuring tool and the assembled body, reducing the measurement items of the electrode base 2 for the measurer, with lower measurement intensity and higher detection efficiency and greater accuracy for the measurer. The double detection means detecting the workpiece (i.e., the electrode base 2) by using two tools. The two tools in the present invention are a measuring tool and an assembled body respectively.

[0062] As described above, it is only the specific implementation mode of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention can easily think of changes or substitutions, which should all be covered within the protection scope of the present invention. Moreover, the technical solutions between various embodiments of the present invention can be combined with each other, but it must be based on the realization by those of ordinary skill in the art. When the combination of technical solutions results in contradictions or cannot be realized, it should be considered that such a combination of technical solutions does not exist and is not within the protection scope required by the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claimed rights.

Claims

1. A detection tool for a hemispherical resonant gyroscope electrode base, characterized in that: An annular groove (11) is provided on one surface of the detection tool (1), an outer cone (12) is formed in the middle of the annular groove (11), an inner circular portion (13) is formed on the inner outer ring of the annular groove (11), the outer cone (12) is adapted to fit with an inner cone hole (21) on an external electrode base (2), and the inner circular portion (13) is adapted to fit with an outer circular portion (22) on the external electrode base (2).

2. The detection tool for the hemispherical resonant gyro electrode base according to claim 1, characterized in that: It also includes a retaining portion (14), wherein the retaining portion (14) is formed on the back side of the annular groove (11).

3. The detection tool for the hemispherical resonant gyro electrode base according to claim 2, characterized in that: The taper of the outer tapered portion (12) is smaller than the taper of the inner tapered hole (21), and a side of the outer tapered portion (12) away from the retaining portion (14) is in line contact with a side of the inner tapered hole (21) away from the retaining portion (14).

4. The detection tool for the hemispherical resonant gyro electrode base according to claim 1, characterized in that: The detection tool (1) is made of transparent material.

5. The detection tool for the hemispherical resonant gyro electrode base according to claim 1, characterized in that: The material of the detection tool (1) is quartz.

6. The detection tool for the hemispherical resonant gyro electrode base according to claim 1, characterized in that: The outer ring of the detection tool (1) is cylindrical or arc-shaped.

7. A method for processing an electrode base in a hemispherical resonant gyroscope, characterized in that: The processing is performed by means of the detection tool (1) according to any one of claims 1 to 6, and specifically comprises the following steps: S1. Processing and testing tooling (1) using a setting method; S2, installing the detection tool (1) on the processing equipment, using a contact probe to establish the inner cone surface processing coordinate system of the inner cone hole (21) on the electrode base (2) according to the position of the detection tool (1), and then taking out the detection tool (1); S3, programming the processing parameters of the semi-finished product of the electrode base (2) according to the inner cone surface processing coordinate system, installing the semi-finished product of the electrode base (2) on the processing equipment, and starting the processing; S4, online detection of whether the inner conical surface size of the inner conical hole (21) meets the design requirements, if yes, proceed to S5, otherwise proceed to S6; S5, assembling the detection tool (1) and the processed electrode base (2) to obtain an assembly, measuring the assembly dimensions of the assembly using a measuring tool, and judging whether the assembly dimensions meet the design requirements. If so, the processing is completed and a qualified electrode base (2) is obtained. Otherwise, proceeding to S6; S6, start the defective product process to determine whether the defect can be repaired. If so, start the repair process and enter S3. Otherwise, start and end the processing to obtain a scrapped electrode base (2).

8. The method for measuring the electrode base of a hemispherical resonant gyro according to claim 7, characterized in that: The implementation of S1 is as follows: The detection tool (1) is manufactured using fused quartz, and the outer cone diameter of the outer cone (12) on the detection tool (1) and the end surface distance between the outer cone (12) and the inner circle (13) on the same side are ensured.

9. The method for measuring the electrode base of a hemispherical resonant gyro according to claim 7, characterized in that: The assembly dimension in S5 is the distance L between the right end surface of the outer ring of the detection tool (1) and the right end surface of the outer circular part (22).

10. The method for measuring the electrode base of a hemispherical resonant gyro according to claim 7, characterized in that: The measuring tool in S5 is a vernier caliper and / or a three-coordinate measuring machine.

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