A compact precision angle measuring shaft system

Abstract

A compact precision angle measurement shaft system includes a resolver stator seat, a resolver stator pressure plate, a resolver stator, a resolver rotor, a bearing seat, an angular contact bearing pair, a wire cover plate A, a rotating shaft, a bearing end cover, and a wire cover plate B; wherein the resolver stator, the resolver stator seat, the resolver stator pressure plate, the rotating shaft, and the inner ring of the angular contact bearing pair are connected to each other to form the stationary part of the precision angle measurement shaft system; the outer ring of the angular contact bearing pair, the bearing seat, the bearing end cover, and the resolver rotor are connected to each other to form the rotating part of the precision angle measurement shaft system; the wire cover plate A and the wire cover plate B cover the wires in the wiring groove to fix and protect them. The precision angle measurement shaft system has the characteristics of high precision, compact structure, light weight, high strength and stiffness, and impact and vibration resistance, and can meet the relevant requirements of missile-borne equipment. At the same time, the precision angle measurement shaft system can be produced in a modular manner, which is conducive to shortening the equipment development cycle and reducing the development cost.

Description

Technical Field

[0001] The invention relates to a precision angle measuring shaft system, in particular to a compact precision angle measuring shaft system applied to a missile-borne three-inertia group double-axis indexing mechanism. Background Art

[0002] As the core component in the development process of the three-auto inertial group dual-axis rotation mechanism, the angle measurement axis system provides angle measurement and feedback for the realization of the "three self" functions (self-detection, self-calibration, and self-calibration). The angle measurement accuracy directly affects the various accuracy indicators of the entire equipment and plays a key role in the development process of the three-auto inertial group dual-axis rotation mechanism.

[0003] The missile-borne use environment places stringent requirements on the size and weight of the three-inertia group dual-axis indexing mechanism. The angle measuring shaft system in existing products is large in size, heavy in weight, and complex in structure. Therefore, the material and structural form of the existing drive shaft system must be improved to meet the above requirements. Summary of the invention

[0004] The technical scheme adopted to achieve the above-mentioned purpose includes a resolver stator seat, a resolver stator pressure plate, a resolver stator, a resolver rotor, a bearing seat, an angular contact bearing pair, a wire cover A, a rotating shaft, a bearing end cover, and a wire cover B; wherein the resolver stator is installed on the resolver stator seat and is pressed by the resolver stator pressure plate, the rotating shaft and the resolver stator pressure plate are fixed to the resolver stator seat by screws, and the inner ring of the angular contact bearing pair is fixed to the rotating shaft, together forming the stationary part of the precision angle measurement shaft system; the outer ring of the angular contact bearing pair, the bearing seat, the bearing end cover, and the resolver rotor are connected to each other to form the rotating part of the precision angle measurement shaft system; the wire can be led to the wiring groove on the resolver stator seat through the middle through hole of the rotating shaft and the wiring hole on the resolver stator seat to realize the input and output of the signal; the wire cover A and the wire cover B cover the wire in the wiring groove to play a fixing and protective role.

[0005] Beneficial Effects

[0006] Compared with the prior art, the present invention has the following advantages.

[0007] 1. The precision angle measurement shaft system has the characteristics of compact structure, light weight, high strength and stiffness, and resistance to impact and vibration, and can meet the relevant requirements of missile-borne equipment;

[0008] 2. The shaft system support form is precision angular contact bearings installed back to back, which can significantly improve the shaft system rotation accuracy of the equipment and improve the overall performance of the equipment;

[0009] 3. Modular production can be carried out, which is conducive to shortening the equipment development cycle and reducing development costs. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a schematic diagram of the present invention.

[0011] Figure 2 It is a schematic diagram of the three-dimensional structure of the resolver stator seat according to an embodiment of the present invention.

[0012] Numbers in the figure: 1. Resolver stator seat, 2. Resolver stator pressure plate, 3. Resolver stator, 4. Resolver rotor, 5. Bearing seat, 6. Angular contact bearing pair, 7. Wire cover A, 8. Rotating shaft, 9. Bearing end cover, 10. Wire cover B. DETAILED DESCRIPTION

[0013] The present invention will be described in more detail below in conjunction with the accompanying drawings:

[0014] The device comprises a resolver stator seat 1, a resolver stator pressure plate 2, a resolver stator 3, a resolver rotor 4, a bearing seat 5, an angular contact bearing pair 6, a wire cover A7, a rotating shaft 8, a bearing end cover 9, and a wire cover B10; wherein the resolver stator 3 is mounted on the resolver stator seat 1 and is pressed by the resolver stator pressure plate 2, the rotating shaft 8 and the resolver stator pressure plate 2 are fixed on the resolver stator seat 1 by screws, the inner ring of the angular contact bearing pair 6 is fixed on the rotating shaft 8, and together they constitute the stationary part of the precision angle measurement shaft system; the outer ring of the angular contact bearing pair 6, the bearing seat 5, the bearing end cover 9, and the resolver rotor 4 are connected to each other and together they constitute the rotating part of the precision angle measurement shaft system; the wire can be led to the wiring groove on the resolver stator seat 1 through the middle through hole of the rotating shaft 8 and the wiring hole on the resolver stator seat 1 to realize the input and output of the signal; the wire cover A7 and the wire cover B10 cover the wire in the wiring groove to play a fixing and protective role.

[0015] Example

[0016] like Figure 1 , Figure 2 The specific implementation process is as follows:

[0017] A compact precision angle measurement shaft system is used in a missile-borne three-inertia group dual-axis indexing mechanism. A resolver stator 3 is mounted on a resolver stator seat 1 and is pressed by a resolver stator pressure plate 2. A rotating shaft 8 and a resolver stator pressure plate 2 are fixed to the resolver stator seat 1 by screws. An inner ring of an angular contact bearing pair 6 is fixed on the rotating shaft 8, and together they constitute the stationary part of the precision angle measurement shaft system. An outer ring of the angular contact bearing pair 6, a bearing seat 5, a bearing end cover 9, and a resolver rotor 4 are interconnected to form the rotating part of the precision angle measurement shaft system. A wire cover A7 and a wire cover B10 cover the wires in a wiring groove to fix and protect them.

[0018] The resolver stator seat 1 is made of high-strength aluminum alloy through precision machining, and has high strength and rigidity, and is light in weight, meeting the requirements of miniaturization and lightweight of missile-borne equipment.

[0019] The angular contact bearing pair 6 is a pair of precision angular contact bearings, and is installed back to back, which can ensure the accuracy of the shaft system under the impact and vibration environment of the bomb load and meet the long-term accuracy stability requirements.

[0020] The resolver stator 3 and the resolver rotor 4 together form a resolver, which is an absolute dual-channel resolver with an accuracy of up to ±30″.

[0021] The rotating shaft 8 is a hollow structure, which can reduce the weight of the entire precision drive shaft system on the one hand, and provide a channel for the wire to pass through on the other hand.

[0022] The wire can be led to the wiring groove on the resolver stator seat 1 through the middle through hole of the rotating shaft 8 and the wiring hole on the resolver stator seat 1 to realize the input and output of the signal.

Claims

1. A compact precision angle measuring shaft system, comprising a resolver stator seat (1), a resolver stator pressure plate (2), a resolver stator (3), a resolver rotor (4), a bearing seat (5), an angular contact bearing pair (6), a wire cover A (7), a rotating shaft (8), a bearing end cover (9), and a wire cover B (10), characterized in that: The resolver stator (3) is mounted on the resolver stator seat (1) and is pressed by the resolver stator pressure plate (2); the rotating shaft (8) and the resolver stator pressure plate (2) are fixed to the resolver stator seat (1) by screws; the inner ring of the angular contact bearing pair (6) is fixed on the rotating shaft (8), and together they constitute the stationary part of the precision angle measurement shaft system; the outer ring of the angular contact bearing pair (6), the bearing seat (5), the bearing end cover (9), and the resolver rotor (4) are mutually connected to constitute the rotating part of the precision angle measurement shaft system; The wire cover A (7) and the wire cover B (10) cover the wires in the wire trough; The resolver stator seat (1) is made of high-strength aluminum alloy through machining; The angular contact bearing pair (6) is a pair of precision angular contact bearings and is installed in a back-to-back manner; The resolver stator (3) and the resolver rotor (4) together form a resolver, and the resolver type is an absolute dual-channel resolver; The rotating shaft (8) is a hollow structure; The wire can be led to the wiring groove on the resolver stator seat (1) through the middle through hole of the rotating shaft (8) and the wiring hole on the resolver stator seat (1), so as to realize the input and output of the signal; The wire cover plate A (7) and the wire cover plate B (10) cover the wires in the wiring trough.

Images