Rotor of angular displacement sensor

Abstract

A rotor of an angular displacement sensor comprises a casing with a retainer ring for a hole, a rotary transformer stator arranged in the casing, a rotating shaft inserted in the rotary transformer stator, a rotor iron core arranged between the rotating shaft and the rotary transformer stator, a rear cover plate clamped at one end of the casing, and a plurality of rotor punching sheets arranged in the rotor iron core. Wherein the rotary transformer stator is used for detecting the angular displacement of the rotor and is arranged opposite to the rotor iron core, the hole check ring is used for fixing the position of the rotor iron core on a rotating shaft, and the inner wall of any rotor punching sheet is provided with a circle center offset of 0.59-0.61 mm; according to the utility model, a certain circle center offset is given to the rotor punching sheet, and the relative position accuracy between the rotor iron core and the rotating shaft is ensured, so that the linear angle requirement of a product is ensured, the measurement accuracy and stability of the sensor are improved, and the angle change of a measured part can be reflected more accurately.

Description

Technical Field

[0001] The utility model relates to the field of industrial equipment, in particular to a rotor of an angular displacement sensor. Background Art

[0002] With the rapid development of industrial automation and precision measurement technology, angular displacement sensors are increasingly used in aerospace, machinery manufacturing, automatic control and other fields. As a device that measures the angle change of an object and converts it into an electrical signal output, the accuracy and reliability of the angular displacement sensor are crucial to the performance of the entire system. In the manufacturing process of the angular displacement sensor, the accuracy and consistency of the rotor are the key factors that directly affect the performance of the sensor. As the core component of the angular displacement sensor, the design, manufacturing and assembly accuracy of the rotor are directly related to the measurement accuracy and stability of the sensor. In the traditional rotor manufacturing method, due to the influence of various factors such as processing equipment, process parameters, and manual operation, during the processing process, due to the different skills and experience of the operators, as well as the accuracy and stability of the processing equipment, it is easy to cause problems such as rotor size deviation and shape error, thereby affecting the measurement accuracy of the sensor.

[0003] Therefore, it is necessary to provide a new technical solution to overcome the above-mentioned defects. Utility Model Content

[0004] The purpose of the utility model is to provide a rotor of an angular displacement sensor which can effectively solve the above technical problems.

[0005] In order to achieve the purpose of this utility model, the following technical solutions are adopted:

[0006] A rotor of an angular displacement sensor, characterized in that it includes a housing with a hole retaining ring, a resolver stator arranged in the housing, a rotating shaft inserted in the resolver stator, a rotor core arranged between the rotating shaft and the resolver stator, a rear cover plate clamped to one end of the housing, and a rotor punching sheet arranged in the rotor core; wherein the resolver stator is used to detect the angular displacement of the rotor and is arranged opposite to the rotor core, the hole retaining ring is used to fix the position of the rotor core on the rotating shaft, and the inner wall of any of the rotor punching sheets is provided with a center offset of 0.59 to 0.61 mm.

[0007] Furthermore, one end of the rotating shaft is provided with an assembly surface which is manufactured by a milling process and is used for plugging and cooperating with the rotor core.

[0008] Furthermore, two hole retaining rings are provided and are respectively sleeved on the two ends of the rotating shaft, and the inner surface of any one of the hole retaining rings is provided with a fixing block for matching and clamping with the rotating shaft.

[0009] Furthermore, the rotor core is arranged between two hole retaining rings.

[0010] Furthermore, an adjusting washer is provided between the hole retaining ring and the rotor core.

[0011] Furthermore, a deep groove ball bearing is installed at one end of the rotating shaft close to the rotor core.

[0012] Furthermore, the deep groove ball bearing is made of alloy steel.

[0013] Furthermore, a high-temperature shielded wire is connected to one side of the rotor core, a wire pressing plate with a wire outlet slot is provided at one end of the casing, and one end of the high-temperature shielded wire passes through the casing through the wire outlet slot.

[0014] Furthermore, the housing is provided with a plurality of heat dissipation holes.

[0015] Furthermore, an angular displacement stator is provided on the inner wall of one end of the casing close to the resolver stator.

[0016] Compared with the prior art, the utility model has the following beneficial effects: the utility model ensures the relative position between the rotor core and the rotating shaft is accurate by giving the rotor punching a circle center offset of at least 0.6 mm, thereby ensuring the linear angle requirements of the product. This design improves the measurement accuracy and stability of the sensor, enabling it to more accurately reflect the angle changes of the measured component. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. They are used together with the embodiments of the present invention to explain the present invention and do not constitute a limitation to the present invention.

[0018] Figure 1 It is a structural schematic diagram of the utility model.

[0019] Figure 2 It is an exploded view of the utility model.

[0020] Figure 3 It is a cross-sectional view of the utility model.

[0021] Figure 4 It is the assembly drawing of the rotating shaft of the utility model.

[0022] Figure 5 It is a structural schematic diagram of the rotating shaft of the utility model.

[0023] Figure 6 This is a schematic diagram of the structure of the rotor core of the utility model.

[0024] In the figure: 1. retaining ring for hole; 2. rear cover; 3. deep groove ball bearing; 4. resolver stator; 5. high temperature shielded wire; 6. rotor core; 7. rotating shaft; 8. housing; 9. wire outlet groove; 10. wire pressing plate; 11. rotor punching sheet; 12. adjusting washer; 13. angular displacement stator; 14. assembly surface; 15. fixing block. DETAILED DESCRIPTION

[0025] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below. Obviously, the described embodiments are partial embodiments of the utility model, rather than all embodiments.

[0026] In the description of the present utility model, it should be understood that the terms "center", "lateral", "longitudinal", "front", "rear", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present utility model 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 cannot be understood as limiting the scope of protection of the present utility model. When a component is referred to as being "fixed to" another component, it may be directly on the other component or there may also be a centered component. When a component is considered to be "connected" to another component, it may be directly connected to the other component or there may be a centered component at the same time. When a component is considered to be "set on" another component, it may be directly set on the other component or there may be a centered component at the same time. The terms "vertical", "horizontal", "left", "right" and similar expressions used herein are for illustrative purposes only.

[0027] like Figures 1 to 6As shown, a rotor of an angular displacement sensor comprises a housing 8 with a hole retaining ring 1, a resolver stator 4 arranged in the housing 8, a rotating shaft 7 inserted in the resolver stator 4, a rotor core 6 arranged between the rotating shaft 7 and the resolver stator 4, a rear cover plate 2 clamped at one end of the housing 8, and a plurality of rotor punchings 11 arranged in the rotor core 6; wherein the rotor core 6 is composed of a plurality of rotor punchings 11 arranged and stacked, the resolver stator 4 is used to detect the angular displacement of the rotor and is arranged opposite to the rotor core 6, and the hole retaining ring 1 is used to fix the position of the rotor core 6 on the rotating shaft 7 The inner wall of any rotor punching sheet 11 is provided with a center offset of 0.59 to 0.61 mm; the rear cover plate cooperates with the other end of the casing and is fixed with bolts to effectively ensure the formation of a closed internal space of the rotor to prevent dust and moisture from invading; in this embodiment, the rotor core 6 is assembled on the rotating shaft 7 and fixed at a predetermined position by a retaining ring 1 through a hole. By setting the center offset of the rotor punching sheet 11 to 0.6 mm, it is possible to ensure that the angular displacement sensor has an accurate linear angle response and reduce the linear error value of the utility model.

[0028] One end of the rotating shaft 7 is provided with an assembly surface 14 which is made by a milling process and is used to cooperate with the rotor core 6. In this embodiment, the assembly surface 14 formed by the milling process can accurately control the angle and roughness of the assembly surface 14, thereby further improving the installation accuracy between the rotating shaft 7 and the rotor core 6.

[0029] Two hole retaining rings 1 are provided and are respectively sleeved on the two ends of the rotating shaft 7, and the inner surface of any hole retaining ring 1 is provided with a fixing block 15 for matching and clamping with the rotating shaft 7; the fixing block 15 reinforces the clamping structure between the hole retaining ring 1 and the rotating shaft 7. During the assembly process, the rotor core 6 is arranged between the two hole retaining rings 1. The hole retaining rings 1 can fix the rotor core 6 on the rotating shaft 7 on the one hand, and on the other hand, the rotor can be adjusted on the rotating shaft 7, which is convenient for assembly.

[0030] An adjusting washer 12 is provided between the hole retaining ring 1 and the rotor core 6. In this embodiment, the gap between the rotor core 6 and the rotating shaft 7 can be fine-tuned by providing the adjusting washer 12, thereby further improving the stability and reliability of the assembly of the utility model.

[0031] A deep groove ball bearing 3 is installed at one end of the rotating shaft 7 close to the rotor core 6; in this embodiment, the deep groove ball bearing 3 is used to support the rotor core 6. By installing the deep groove ball bearing 3, the supporting force of the rotating shaft 7 on the rotor core 6 can be effectively enhanced, and the friction force generated between the rotor core 6 and the rotating shaft 7 when the rotor core 6 moves can be reduced, thereby enhancing the service life of the utility model.

[0032] An angular displacement stator 13 is provided in the housing 8; in this embodiment, the rotating shaft 7, the rotor core 6, the resolver stator 4 and the deep groove ball bearing 3 constitute a rotor assembly, and the angular displacement stator 13 is provided on the rotor assembly. The angular displacement stator 13 cooperates with the resolver stator 4 to form an angular displacement measurement system for converting the angular displacement of the rotor into a readable electrical signal.

[0033] The electric wires on one side of the rotor core 6 are connected to the high-temperature shielded wire 5. A wire pressing plate 10 with a wire outlet groove 9 is provided on the inner wall of one end of the casing 8. One end of the high-temperature shielded wire 5 is led out through the wire outlet groove 9 and connected to the external circuit of the sensor for transmitting signals. The direction of the high-temperature shielded wire 5 is fixed by the wire pressing plate 10 to enhance the use effect.

[0034] Working principle: After assembling the rotor core 6 on the assembly surface 14 of the rotating shaft 7 through the center offset, the two hole retaining rings 1 are respectively mounted on the two ends of the rotating shaft 7, and the adjusting washer 12 is placed between the hole retaining ring 1 and the rotor core 6. By adjusting its thickness and material, the gap between the rotor core 6 and the rotating shaft 7 is fine-tuned and the deep groove ball bearing 3 is installed on the rotating shaft; then, the wire pressing plate 10 is screwed to the inner wall of the casing 8, and a wire outlet groove 9 is set on the wire pressing plate 10, and the rotating shaft 7 is inserted into the casing 8. One end of the high-temperature shielded wire 5 is connected to the rotor core 6 to guide and fix the direction of the high-temperature shielded wire 5; the rotary transformer stator 4 and the angular displacement stator 13 are installed inside the casing 8 to ensure that they are arranged opposite to the rotor core 6; the rear cover plate 2 is fixed to the other end of the casing 8 by sealant and bolts to ensure that a closed rotor internal space is formed to complete the assembly.

[0035] The standard parts used in the utility model can be purchased from the market, and special-shaped parts can be customized according to the description in the specification and the drawings. The specific connection methods of each part adopt the conventional means such as mature bolts, rivets, welding, etc. in the prior art. The machinery, parts and equipment all adopt the conventional models in the prior art, and the circuit connection adopts the conventional connection method in the prior art, which will not be described in detail here. The content not described in detail in this specification belongs to the prior art known to professional and technical personnel in this field.

[0036] It should be understood that those skilled in the art can make improvements or changes based on the above description, and all these improvements and changes should fall within the scope of protection of the claims attached to the utility model.

Claims

1. A rotor of an angular displacement sensor, characterized in that: The invention comprises a housing (8) with a hole retaining ring (1), a rotary transformer stator (4) arranged in the housing (8), a rotating shaft (7) inserted in the rotary transformer stator (4), a rotor core (6) arranged between the rotating shaft (7) and the rotary transformer stator (4), a rear cover plate (2) clamped on one end of the housing (8), and a plurality of rotor punchings (11) arranged in the rotor core (6); wherein the rotary transformer stator (4) is used to detect the angular displacement of the rotor and is arranged opposite to the rotor core (6); the hole retaining ring (1) is used to fix the position of the rotor core (6) on the rotating shaft (7); and the inner wall of any of the rotor punchings (11) is provided with a center offset of 0.59 to 0.61 mm.

2. The rotor of an angular displacement sensor according to claim 1, characterized in that: One end of the rotating shaft (7) is provided with an assembly surface (14) which is manufactured by a milling process and is used for mating and plugging with the rotor core (6).

3. The rotor of an angular displacement sensor according to claim 2, characterized in that: Two hole retaining rings (1) are provided and are respectively sleeved on the two ends of the rotating shaft (7), and the inner surface of any one of the hole retaining rings (1) is provided with a fixing block (15) for matching and clamping with the rotating shaft (7).

4. The rotor of an angular displacement sensor according to claim 3, characterized in that: The rotor core (6) is arranged between two hole retaining rings (1).

5. The rotor of an angular displacement sensor according to claim 4, characterized in that: An adjusting washer (12) is provided between the hole retaining ring (1) and the rotor iron core (6).

6. The rotor of an angular displacement sensor according to claim 5, characterized in that: One end of the rotating shaft (7) close to the rotor core (6) is equipped with a deep groove ball bearing (3).

7. The rotor of an angular displacement sensor according to claim 6, characterized in that: The material of the deep groove ball bearing (3) is alloy steel.

8. The rotor of an angular displacement sensor according to claim 7, characterized in that: A high-temperature shielded wire (5) is connected to an electric wire on one side of the rotor core (6); a wire pressing plate (10) with a wire outlet slot (9) is provided at one end of the casing (8); and one end of the high-temperature shielded wire (5) passes through the casing (8) through the wire outlet slot (9).

9. The rotor of an angular displacement sensor according to claim 8, characterized in that: The casing (8) is provided with a plurality of heat dissipation holes.

10. The rotor of an angular displacement sensor according to claim 1, characterized in that: An angular displacement stator (13) is provided on the inner wall of one end of the housing (8) close to the resolver stator (4).

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