Adjustable high-precision speed reducer

Abstract

The application relates to the technical field of speed reducers, in particular to an adjustable high-precision speed reducer, which comprises a speed reducer shell, a driving shaft and a driven shaft are arranged in the shell, a driving cone disc and a driven cone disc are connected to the driving shaft and the driven shaft respectively, and the driving cone disc and the driven cone disc are symmetrically arranged. A plurality of friction balls are arranged between the driving cone disc and the driven cone disc, the balls are provided with ball shafts, the angle positions of the ball shafts are changed through an adjusting mechanism in the shell, the distances from the friction contact points to the ball shafts are changed, and the transmission ratio is adjusted. The adjusting mechanism comprises a fixed disc, a rotating worm and a rotating worm wheel and the like. In addition, a compression spring and a limiting ring are further arranged. The speed reducer can realize high-precision transmission ratio adjustment, reduces abrasion and noise, and has simple structure and convenient operation.

Description

Technical Field

[0001] This application relates to the field of speed reducer technology, and in particular to an adjustable high-precision speed reducer. Background Technology

[0002] In industrial production, speed reducers are widely used in various mechanical equipment as an important power transmission device. Traditional speed reducers typically use gear transmission, achieving speed reduction and torque increase through the meshing of gears with different numbers of teeth. However, this traditional speed reducer has some limitations. For example, gear transmission is prone to wear and noise, and in some applications requiring high-precision transmission, the accuracy of traditional speed reducers often fails to meet the requirements. Furthermore, the transmission ratio of traditional speed reducers is usually fixed, making it impossible to flexibly adjust according to actual working needs. In some work scenarios requiring frequent changes in speed and torque, it is necessary to replace speed reducers with different transmission ratios, which is cumbersome and costly. With the continuous improvement of industrial automation, higher requirements are being placed on the accuracy, adjustability, and stability of speed reducers.

[0003] Therefore, an adjustable high-precision speed reducer is invented to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide an adjustable high-precision speed reducer to solve the problems of insufficient precision, non-adjustable transmission ratio, and noise caused by easy wear in existing speed reducers.

[0005] This application provides an adjustable high-precision speed reducer, employing the following technical solution: It includes a speed reducer housing, wherein a drive shaft is disposed within the housing, a drive cone disk is disposed on the drive shaft, a driven shaft is disposed within the housing, a driven cone disk is disposed on the driven shaft, the drive cone disk and the driven cone disk are symmetrically arranged, a plurality of friction balls are disposed within the housing, the friction balls are located between the drive cone disk and the driven cone disk and can move within the housing, friction surfaces are provided on both the drive cone disk and the driven cone disk, the friction balls are in frictional contact with the friction surfaces, a ball shaft is disposed on each friction ball, and an adjustment mechanism is provided within the housing to adjust the angular position of the ball shaft. By changing the angular position of the ball shaft, the distance from the friction contact point between the friction ball and the friction surface to the ball shaft is changed.

[0006] Optionally, the adjustment mechanism includes a fixed disk, which is disposed inside the reducer housing. The fixed disk has movable grooves that correspond one-to-one with the friction balls. The movable grooves are arranged along the radial direction of the driving cone disk. A rotatable rotating worm gear is disposed inside the reducer housing. The rotating worm gear has multiple inclined grooves. Movable balls are respectively disposed at both ends of the ball shaft. One end of the ball shaft is inserted into the movable groove and the other end is inserted into the inclined groove. When the rotating worm gear rotates, the inclined groove causes the angular position of the ball shaft to change.

[0007] Optionally, a first compression spring is provided at one end of the reducer housing, and the other end of the first compression spring is in contact with the driving cone disc. A second compression spring is provided at the other end of the reducer housing, and the other end of the second compression spring is in contact with the driven cone disc.

[0008] Optionally, a limiting ring is provided inside the deceleration housing, and the limiting ring is located outside the friction ball.

[0009] Optionally, a rotatable worm gear is provided inside the reducer housing, the worm gear is threadedly connected to a worm wheel, and a handwheel is provided at one end of the worm gear.

[0010] In summary, this application includes the following beneficial technical effects:

[0011] 1. High-precision adjustment: By adjusting the mechanism to change the angular position of the ball shaft, the distance from the friction contact point between the friction ball and the friction surface to the ball shaft is changed, thereby achieving precise adjustment of the transmission ratio and meeting the requirements of high-precision transmission.

[0012] 2. Reduced wear and noise: The friction transmission method using friction balls and friction surfaces reduces wear and noise compared to traditional gear transmission, thus improving the stability and service life of the equipment.

[0013] 3. Simple structure and easy operation: The adjustment mechanism is easy to operate by rotating the worm gear and the worm shaft. The transmission ratio can be adjusted simply by turning the handwheel. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of the overall structure of the device. Figure I ;

[0015] Figure 2 This is a top view of the device;

[0016] Figure 3 This is a cross-sectional schematic diagram of the overall structure of this device;

[0017] Figure 4 This is a diagram of the internal components of the reducer housing of this device;

[0018] Figure 5 This is a schematic diagram of the adjustment mechanism in this device;

[0019] Among them, 1. reducer housing, 2. drive shaft, 3. drive cone disc, 4. driven shaft, 5. driven cone disc, 6. friction ball, 7. friction surface, 8. ball shaft, 9. adjustment mechanism, 10. fixed disc, 11. movable groove, 12. rotating worm gear, 13. inclined groove, 14. movable ball, 15. first compression spring, 16. second compression spring, 17. limit ring, 18. rotating worm, 19. rotating handwheel. Detailed Implementation

[0020] The present application will be further described in detail below with reference to the accompanying drawings. In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present utility model.

[0021] Reference Figure 1 , Figure 3 , Figure 4 , Figure 5 One embodiment shown is an adjustable high-precision speed reducer including a speed reducer housing 1. In this embodiment, the speed reducer housing 1 serves as the external support structure for the entire device, providing installation space for internal components. A drive shaft 2 is installed inside the speed reducer housing 1, connected to the housing via bearings, allowing the drive shaft 2 to rotate stably within the housing. A drive cone disk 3 is slidably connected to the drive shaft 2. This connection ensures that the drive shaft 2 rotates synchronously with the drive cone disk 3, while also allowing the drive cone disk 3 to slide on the drive shaft 2. Similarly, a driven shaft 4 installed inside the speed reducer housing 1 is also connected to the housing via bearings. A driven cone disk 5 is slidably connected to the driven shaft 4. The drive cone disk 3 and the driven cone disk 5 are symmetrically arranged, forming a specific transmission space between them. Multiple friction balls 6 are disposed between the drive cone disk 3 and the driven cone disk 5, and can move within the speed reducer housing 1. Friction surfaces 7 on the drive cone disk 3 and the driven cone disk 5 are in close frictional contact with the friction balls 6, achieving power transmission through friction. A ball shaft 8 is fixedly connected to the friction ball 6, and the ball shaft 8 is fixedly connected to the friction ball 6. An adjustment mechanism 9 is provided inside the reducer housing 1 to change the angular position of the ball shaft 8.

[0022] The implementation principle of the above embodiment is as follows: the drive shaft 2 drives the drive cone disk 3 to rotate, and the drive cone disk 3 drives the driven cone disk 5 to rotate through the friction between the friction ball 6 and the friction surface 7 on the driven cone disk 5, thereby realizing speed reduction transmission. The adjustment mechanism 9 changes the distance from the friction contact point between the friction ball 6 and the friction surface 7 to the ball shaft 8 by changing the angular position of the ball shaft 8, thereby adjusting the transmission ratio.

[0023] Reference Figure 4 , Figure 5 One embodiment shown is as follows: The adjustment mechanism 9 includes a fixed disk 10. In this embodiment, the fixed disk 10 is fixedly installed inside the reducer housing 1, providing a basis for the positioning and movement of the ball shaft 8. The fixed disk 10 has movable grooves 11 corresponding to the friction balls 6. These movable grooves 11 are arranged along the radial direction of the driving cone disk 3. A rotatable rotating worm gear 12 is also provided inside the reducer housing 1. The rotating worm gear 12 is connected to the reducer housing 1 via bearings and can rotate freely within the housing. Multiple inclined grooves 13 are provided on the rotating worm gear 12. Movable balls 14 are fixedly connected to both ends of the ball shaft 8. One end of the ball shaft 8 is inserted into the movable groove 11 of the fixed disk 10, allowing the movable ball 14 to move within the groove 11. The other end is inserted into the inclined groove 13 of the rotating worm gear 12, so that when the rotating worm gear 12 rotates, the inclined groove 13 can cause the angular position of the ball shaft 8 to change.

[0024] The implementation principle of the above embodiment is as follows: the worm gear 12 rotates, and the inclined groove 13 on the worm gear 12 pushes the movable ball 14 at one end of the ball shaft 8. Since the other end of the ball shaft 8 is restricted in the movable groove 11 of the fixed plate 10, the angular position of the ball shaft 8 is changed, thereby achieving the purpose of adjusting the transmission ratio.

[0025] Reference Figure 3 One embodiment shown is as follows: a first compression spring 15 is provided at one end inside the reducer housing 1. In this embodiment, one end of the first compression spring 15 is fixed to the inner wall of the reducer housing 1, and the other end is in contact with the driving cone disc 3. Similarly, a second compression spring 16 is provided at the other end inside the reducer housing 1. One end of the second compression spring 16 is fixed to the inner wall of the reducer housing 1, and the other end is in contact with the driven cone disc 5.

[0026] The implementation principle of the above embodiment is as follows: the first compression spring 15 and the second compression spring 16 respectively generate elastic pressure on the active cone disk 3 and the driven cone disk 5, so that the active cone disk 3 and the driven cone disk 5 can always be in close contact with the friction ball 6, ensuring the stability and reliability of the friction transmission, and maintaining a good transmission effect even when the working load changes.

[0027] Reference Figure 4 One embodiment shown is as follows: a limiting ring 17 is provided inside the reduction housing. In this embodiment, the limiting ring 17 is fixedly installed inside the reduction housing 1 and is located outside the friction ball 6.

[0028] The implementation principle of the above embodiment is as follows: the limiting ring 17 limits the friction ball 6, preventing the friction ball 6 from being displaced between the driving cone disk 3 and the driven cone disk 5 due to uneven force or other reasons, ensuring that the friction ball 6 is always in an effective transmission position and maintaining stable transmission performance.

[0029] Reference Figure 4 One embodiment shown is as follows: A rotatable worm gear 18 is provided inside the reducer housing 1. The worm gear 18 is connected to the reducer housing 1 via a bearing and can rotate within the housing. The worm gear 18 is threadedly connected to a worm wheel 12. A handwheel 19 is provided at one end of the worm gear 18 and is fixedly connected to the worm gear 18.

[0030] The implementation principle of the above embodiment is as follows: the operator rotates the handwheel 19, which drives the rotating worm 18 to rotate. Since the rotating worm 18 is threadedly connected to the rotating worm wheel 12, the rotation of the rotating worm 18 is converted into the rotation of the rotating worm wheel 12, thereby realizing the adjustment of the angular position of the ball shaft 8, and finally achieving the purpose of adjusting the transmission ratio. The operation is simple and convenient.

[0031] The working principle of this device is as follows: When the drive shaft 2 rotates under the drive of external power, the drive shaft 2 drives the drive cone disk 3 to rotate synchronously through a key connection. The friction surface 7 of the drive cone disk 3 contacts the friction ball 6, and the friction force drives the friction ball 6 to rotate, which in turn drives the driven cone disk 5 to rotate, thereby realizing the transmission of power from the drive shaft 2 to the driven shaft 4 and the reduction of the rotational speed.

[0032] To adjust the transmission ratio, rotate the handwheel 19, which in turn drives the worm gear 18 to rotate. The worm gear 18 is threadedly connected to the worm wheel 12, causing the worm wheel 12 to rotate. The inclined groove 13 on the worm wheel 12 pushes the movable ball 14 at one end of the ball shaft 8. Because the other end of the ball shaft 8 is in the movable groove 11 set radially along the driving cone disk 3 on the fixed disk 10, its direction of movement is restricted, and the angular position of the ball shaft 8 changes. The change in the angular position of the ball shaft 8 changes the distance from the friction contact point between the friction ball 6 and the friction surface 7 to the ball shaft 8, thereby changing the transmission ratio between the driving cone disk 3 and the driven cone disk 5.

[0033] The first compression spring 15 and the second compression spring 16 apply pressure to the driving cone disk 3 and the driven cone disk 5 respectively, ensuring that they are always in close contact with the friction ball 6, thus ensuring stable transmission under different working loads. The limiting ring 17 restricts the position of the friction ball 6, preventing it from shifting during operation and ensuring the stability and reliability of the transmission.

[0034] The working principle of this device has been explained through the above embodiments. These embodiments only illustrate several implementation methods of this utility model, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. An adjustable high-precision speed reducer, comprising a speed reducer housing (1), characterized in that: A drive shaft (2) is provided inside the reducer housing (1), and a drive cone disk (3) is provided on the drive shaft (2). A driven shaft (4) is provided inside the reducer housing (1), and a driven cone disk (5) is provided on the driven shaft (4). The drive cone disk (3) and the driven cone disk (5) are arranged symmetrically. A plurality of friction balls (6) are provided inside the reducer housing (1). The friction balls (6) are located between the drive cone disk (3) and the driven cone disk (5) and can be placed inside the reducer housing (1). The activity occurs inside the reducer housing (1). Both the active cone disk (3) and the driven cone disk (5) are provided with friction surfaces (7). The friction ball (6) is in frictional contact with the friction surface (7). The friction ball (6) is provided with a ball shaft (8). The reducer housing (1) is provided with an adjustment mechanism (9) that can adjust the angular position of the ball shaft (8). By changing the angular position of the ball shaft (8), the distance from the friction contact point between the friction ball (6) and the friction surface (7) to the ball shaft (8) is changed.

2. The adjustable high-precision speed reducer according to claim 1, characterized in that: The adjustment mechanism (9) includes a fixed disk (10). The fixed disk (10) is provided inside the reducer housing (1). The fixed disk (10) has movable grooves (11) that correspond one-to-one with the friction balls (6). The movable grooves (11) are arranged along the radial direction of the active cone disk (3). The reducer housing (1) has a rotatable rotating worm gear (12). The rotating worm gear (12) has multiple inclined grooves (13). Movable balls (14) are respectively provided at both ends of the ball shaft (8). One end of the ball shaft (8) is inserted into the movable groove (11) and the other end is inserted into the inclined groove (13). When the rotating worm gear (12) rotates, the inclined groove (13) causes the angular position of the ball shaft (8) to change.

3. The adjustable high-precision speed reducer according to claim 1, characterized in that: A first compression spring (15) is provided at one end of the reducer housing (1), and the other end of the first compression spring (15) is in contact with the driving cone disc (3). A second compression spring (16) is provided at the other end of the reducer housing (1), and the other end of the second compression spring (16) is in contact with the driven cone disc (5).

4. The adjustable high-precision speed reducer according to claim 1, characterized in that: A limiting ring (17) is provided inside the reducer housing (1), and the limiting ring (17) is located outside the friction ball (6).

5. The adjustable high-precision speed reducer according to claim 1, characterized in that: The reducer housing (1) is provided with a rotatable rotating worm (18), which is threadedly connected to a rotating worm wheel (12), and a rotating handwheel (19) is provided at one end of the rotating worm (18).

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