A micro-adjusting positioning mechanism for a rotating table shafting

Abstract

The utility model relates to the field of inertia test discloses a kind of rotary table shafting fine adjustment positioning mechanism, including base, the upper portion of the base is equipped with main shaft, bearing is jointly installed between the main shaft and base, the outer wall upper portion of the main shaft is equipped with elastic sleeve, the outside of the elastic sleeve is provided with floating sleeve, the inner wall of the floating sleeve is provided with three quantity pressure block, the right side of the base is fixedly connected with fine adjustment seat, the middle part of the fine adjustment seat is equipped with locking assembly, fine adjustment rod is penetrated and is screw-connected in the front and back side of the fine adjustment seat. In the utility model, through the cooperation of elastic sleeve, floating sleeve and pressure block, combined with the two-way fine adjustment of fine adjustment rod, fine adjustment block and the ball head transmission of locking assembly, the gear gap problem of traditional worm gear drive is avoided, three-point extrusion locking principle and the amplification principle that linear motion is converted by helical rotary motion are adopted, rotary table main shaft angular position positioning and fine adjustment are realized. Simple structure, compact, reliable.

Description

Technical Field

[0001] This utility model relates to the field of inertial testing, and in particular to a turntable shaft system fine-tuning and positioning mechanism. Background Technology

[0002] The application of inertial navigation technology plays a crucial role in various fields such as aerospace, aviation, navigation, and intelligent vehicles in my country, and it has a wide range of applications in military and civilian fields.

[0003] A turntable is an inertial testing device used to test and calibrate inertial devices. The angular positioning accuracy of the turntable is a key basic indicator of the equipment. There are two types of implementation of the angular positioning and locking function of the turntable: one is the electric servo positioning of the electric turntable, and the other is the manual mechanical positioning and locking of the manual turntable. The commonly used manual mechanical positioning and locking consists of two mechanisms. The shaft is rotated to the position through the transmission of the worm gear mechanism, and then the current position is locked by the locking mechanism. Since the gap between the gear transmission pairs cannot be eliminated, the positioning accuracy of the mechanism is not high, the mechanism is relatively complex, and the cost is high. Utility Model Content

[0004] To overcome the above shortcomings, this utility model provides a turntable shaft system fine-tuning positioning mechanism, which aims to improve the existing technology where manual mechanical positioning and locking is achieved by rotating the shaft system to the correct position through a worm gear mechanism and then locking the current position through a locking mechanism. However, due to the inability to eliminate the gap between the gear transmission pairs, the positioning accuracy of the mechanism is not high, the mechanism is relatively complex, and the cost is high.

[0005] To achieve the above objectives, the present invention adopts the following technical solution: a turntable shaft fine-tuning and positioning mechanism, comprising a base, a main shaft mounted on the upper part of the base, a bearing mounted between the main shaft and the base, an elastic sleeve mounted on the upper part of the outer wall of the main shaft, a floating sleeve disposed outside the elastic sleeve, and three pressure blocks disposed on the inner wall of the floating sleeve, a fine-tuning seat fixedly connected to the right side of the base, a locking assembly mounted in the middle of the fine-tuning seat, fine-tuning rods threadedly connected to the front and rear sides of the fine-tuning seat, fine-tuning blocks disposed on the sides of the two fine-tuning rods that are close to each other, the fine-tuning blocks contacting the locking assembly, the locking assembly comprising an adjusting rod, a connecting ring threadedly connected to the outer wall of the adjusting rod, a locking rod threadedly connected to the left side of the adjusting rod, the locking rod threadedly connected to the right side of the floating sleeve, a connecting ball head fixedly connected to the left end of the locking rod, the connecting ball head being rotatably connected to the pressure block located on the right side.

[0006] As a further description of the above technical solution: Limit blocks are provided on the lower and upper right sides of the locking rod, and a limiting groove adapted to the limiting block is provided on the inner wall of the adjusting rod. The limiting block and the limiting groove are slidably connected.

[0007] As a further description of the above technical solution: The upper and lower sides of the connecting ring are fixedly connected to connecting shafts.

[0008] As a further description of the above technical solution: A connection port is provided on the upper right side of the base, and a connection groove is provided on both the upper and lower parts of the inner wall of the connection port. The connecting shaft is rotatably connected to the connection groove.

[0009] As a further description of the above technical solution: The fine-tuning seat has an adjustment port on its right side, and the adjustment rod is movably connected to the adjustment port.

[0010] As a further description of the above technical solution: A ball joint is fixedly connected to the side of the fine-tuning rod near the fine-tuning block, and the ball joint is rotatably connected to the fine-tuning block.

[0011] This utility model has the following beneficial effects: 1. In this utility model, the gear backlash problem of traditional worm gear drives is avoided by using an elastic sleeve, a floating sleeve, and a pressure block in combination with the bidirectional fine adjustment of the fine adjustment rod and the fine adjustment block, as well as the ball head transmission of the locking assembly. It employs a three-point compression locking principle and an amplification principle that converts helical rotational motion into linear motion to achieve the positioning and fine adjustment of the turntable spindle angle. The structure is simple, compact, and reliable.

[0012] 2. In this utility model, there is no need to separate the rotation and locking mechanisms. The fine-tuning and locking functions are integrated, reducing complex transmission components, lowering structural complexity and production costs, while reducing failure points and improving the reliability and stability of the mechanism operation. Attached Figure Description

[0013] Figure 1 This is a schematic diagram of the overall three-dimensional structure of a turntable shaft system fine-tuning and positioning mechanism proposed in this utility model; Figure 2 This is a partial cross-sectional three-dimensional structural diagram of the base, bearing, main shaft, elastic sleeve, and floating sleeve of a turntable shaft system fine-tuning and positioning mechanism proposed in this utility model. Figure 3 This is a three-dimensional cross-sectional structural diagram of the fine-tuning seat of a turntable shaft system fine-tuning positioning mechanism proposed in this utility model. Figure 4 This is a three-dimensional structural diagram showing the base, bearing, main shaft, elastic sleeve, and floating sleeve of a turntable shaft system fine-tuning and positioning mechanism proposed in this utility model. Figure 5 This utility model proposes a turntable shaft system fine-tuning and positioning mechanism. Figure 4 Enlarged 3D structural diagram at point A; Figure 6 This is a three-dimensional structural diagram of the locking component of a turntable shaft system fine-tuning and positioning mechanism proposed in this utility model.

[0014] Legend: 1. Base; 2. Bearing; 3. Spindle; 4. Elastic sleeve; 5. Floating sleeve; 6. Pressure block; 7. Locking assembly; 8. Fine-tuning seat; 9. Fine-tuning rod; 10. Fine-tuning block; 71. Adjusting rod; 72. Connecting ring; 73. Locking rod; 74. Connecting ball head; 721. Connecting shaft; 11. Connecting port; 111. Connecting groove; 81. Adjusting port; 91. Ball head rod. Detailed Implementation

[0015] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0016] Reference Figures 1-3 This utility model provides an embodiment of a turntable shaft system fine-tuning and positioning mechanism, including a base 1, which serves as the foundation for mounting various components. A main shaft 3 is mounted on the upper part of the base 1. A bearing 2 is mounted between the main shaft 3 and the base 1 to facilitate the rotation of the main shaft 3. An elastic sleeve 4 is mounted on the upper part of the outer wall of the main shaft 3 to limit the movement of the main shaft 3. A floating sleeve 5 is provided outside the elastic sleeve 4 to adjust the position of two pressure blocks 6 located on the left side. Three pressure blocks 6 are provided on the inner wall of the floating sleeve 5 to control the elastic sleeve. 4. Limiting the spindle 3. A fine-adjustment seat 8 is fixedly connected to the right side of the base 1. It is used to cooperate with the connection of the locking component 7. The locking component 7 is installed in the middle of the fine-adjustment seat 8. It is used to cooperate with the limiting of the spindle 3. Fine-adjustment rods 9 are threaded through and connected to the front and rear sides of the fine-adjustment seat 8. They are used to adjust the angle of the locking component 7, thereby realizing the fine adjustment of the angle of the spindle 3. Fine-adjustment blocks 10 are provided on the side of the two fine-adjustment rods 9 that are close to each other. They are used to cooperate with the locking component 7 and limit it. The fine-adjustment blocks 10 are in contact with the locking component 7.

[0017] like Figures 4-6As shown, the locking assembly 7 includes an adjusting rod 71, which is used to adjust the position of the pressure block 6 on the right side and the floating sleeve 5, thereby limiting the angle of the main shaft 3. A connecting ring 72 is threaded onto the outer wall of the adjusting rod 71, which is used to connect the locking assembly 7 to the base 1 and to adjust the position of the adjusting rod 71. A locking rod 73 is slidably connected through the left side of the adjusting rod 71, which is used to press the adjusting rod 71 against the pressure block 6 on the right side and to adjust the position of the floating sleeve 5. The locking rod 73 is threaded through and connected to the right side of the floating sleeve 5. When the adjusting rod 71 and the locking rod 73 move to the left, the floating sleeve 5 can move to the right. The left end of the locking rod 73 is fixedly connected to the connecting ball head 74, which is rotatably connected to the pressure block 6 located on the right side. Limiting blocks are provided on the lower and upper parts of the right side of the locking rod 73, which are used to cooperate with the adjusting rod 71 to drive the locking rod 73 to rotate. The inner wall of the adjusting rod 71 is provided with a limiting groove that matches the limiting block. The limiting block and the limiting groove are slidably connected. The upper and lower sides of the connecting ring 72 are fixedly connected to the connecting shaft 721, which is used to cooperate with the connection between the connecting ring 72 and the base 1.

[0018] Furthermore, a connection port 11 is provided on the upper right side of the base 1, which is used to connect and adjust the angle of the locking assembly 7. The upper and lower parts of the inner wall of the connection port 11 are provided with connection grooves 111. The connecting shaft 721 is rotatably connected to the connection grooves 111. An adjustment port 81 is provided on the right side of the fine-tuning seat 8, which is used to adjust the angle of the adjustment rod 71. The adjustment rod 71 is movably connected to the adjustment port 81. A ball head rod 91 is fixedly connected to the side of the fine-tuning rod 9 near the fine-tuning block 10. The ball head rod 91 is rotatably connected to the fine-tuning block 10.

[0019] Working principle: In use, rotating the adjusting rod 71 causes the locking rod 73 connected to it to rotate together. Since the adjusting rod 71 is threadedly connected to the connecting ring 72, and the connecting ring 72 is installed in the connecting port 11 through the connecting shaft 721, when the adjusting rod 71 rotates, it can drive the locking rod 73 to move towards the main shaft 3, thereby causing the right-side pressure block 6 to squeeze the elastic sleeve 4. At the same time, since the floating sleeve 5 is threadedly connected to the locking rod 73, when the locking rod 73 rotates, the floating sleeve 5 will be driven to move to the right, thereby causing the floating sleeve 5 to drive the two pressure blocks 6 on the left to press the elastic sleeve 4, thus fixing the position of the main shaft 3. If it is necessary to fine-tune the angle of the main shaft 3, the two fine-tuning rods 9 can be rotated, causing the two fine-tuning blocks 10 to move, thereby adjusting the angle of the adjusting rod 71. This causes the adjusting rod 71 to move the locking rod 73, causing the locking rod 73 to rotate the main shaft 3 slightly, thereby fine-tuning the angle of the main shaft 3.

[0020] Additionally, it should be noted that components not described in detail in this article are existing technologies.

[0021] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A turntable shaft system fine-tuning and positioning mechanism, comprising a base (1), characterized in that: A main shaft (3) is installed on the upper part of the base (1). A bearing (2) is installed between the main shaft (3) and the base (1). An elastic sleeve (4) is installed on the upper part of the outer wall of the main shaft (3). A floating sleeve (5) is provided on the outside of the elastic sleeve (4). Three pressure blocks (6) are provided on the inner wall of the floating sleeve (5). A fine-tuning seat (8) is fixedly connected to the right side of the base (1). A locking component (7) is installed in the middle of the fine-tuning seat (8). Fine-tuning rods (9) are threaded through and threaded to both the front and rear sides of the fine-tuning seat (8). Two fine-tuning rods (9) 9) Fine adjustment blocks (10) are provided on the sides that are close to each other. The fine adjustment blocks (10) are in contact with the locking assembly (7). The locking assembly (7) includes an adjusting rod (71). A connecting ring (72) is threadedly connected to the outer wall of the adjusting rod (71). A locking rod (73) is slidably connected through the left side of the adjusting rod (71). The locking rod (73) is threadedly connected through the right side of the floating sleeve (5). A connecting ball head (74) is fixedly connected to the left end of the locking rod (73). The connecting ball head (74) is rotatably connected to the pressure block (6) located on the right side.

2. The turntable shaft system fine-tuning and positioning mechanism according to claim 1, characterized in that: Limiting blocks are provided on the lower and upper right sides of the locking rod (73), and a limiting groove adapted to the limiting block is provided on the inner wall of the adjusting rod (71). The limiting block and the limiting groove are slidably connected.

3. The turntable shaft system fine-tuning and positioning mechanism according to claim 1, characterized in that: The upper and lower sides of the connecting ring (72) are fixedly connected to the connecting shaft (721).

4. The turntable shaft system fine-tuning and positioning mechanism according to claim 3, characterized in that: The upper right side of the base (1) is provided with a connection port (11), and the upper and lower parts of the inner wall of the connection port (11) are provided with connection grooves (111), and the connection shaft (721) is rotatably connected to the connection grooves (111).

5. The turntable shaft system fine-tuning and positioning mechanism according to claim 1, characterized in that: The fine-tuning seat (8) has an adjustment port (81) on its right side, and the adjustment rod (71) is movably connected to the adjustment port (81).

6. The turntable shaft system fine-tuning and positioning mechanism according to claim 1, characterized in that: The fine adjustment rod (9) is fixedly connected to a ball head rod (91) on the side near the fine adjustment block (10), and the ball head rod (91) is rotatably connected to the fine adjustment block (10).

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