A two-degree-of-freedom roller deviation transmission adjustment mechanism

Abstract

This utility model relates to the field of transmission adjustment technology and discloses a two-degree-of-freedom roller deviation transmission adjustment mechanism, including a main roller. An mounting hole is provided in the inner cavity of the main roller, and an eccentric bushing for connecting a transmission shaft is installed in the mounting hole. A rotary drive device is provided on one side of the main roller. By providing a mounting hole in the inner cavity of the main roller and installing the eccentric bushing, a flexible connection between the main roller and the transmission shaft is achieved. The rotary drive device drives a screw to thread-connect with the eccentric bushing, which can drive the eccentric bushing to move, thereby adjusting the radial position of the main roller. The helical groove on the outer side of the main roller meshes with a wedge slider. Under the drive of a linear actuator, the movement of the wedge slider can be converted into the axial movement of the main roller, thus realizing deviation transmission adjustment of the main roller in both radial and axial degrees of freedom. This greatly improves the mechanism's ability and flexibility to adjust transmission deviations and better adapts to different transmission needs.

Description

Technical Field

[0001] This utility model relates to the field of transmission adjustment technology, and in particular to a two-degree-of-freedom roller deviation transmission adjustment mechanism. Background Technology

[0002] Deviation transmission adjustment mechanisms are important mechanical devices that improve the reliability and accuracy of mechanical systems by compensating for or adjusting deviations during the transmission process. They come in various forms, including cross-slider couplings, differentials, and differential adjustment mechanisms, and are applicable to various scenarios such as machine tools, automobiles, and sewing machines. These mechanisms play a crucial role in ensuring the efficient operation of equipment and also provide important support for the design of complex mechanical systems.

[0003] Currently, narrow-band machines mostly use single-degree-of-freedom eccentric wheels or slider mechanisms for transmission adjustment, which adjust the positional deviation in a single direction manually or electrically. Utility Model Content

[0004] The purpose of this invention is to solve the problems existing in the prior art by proposing a two-degree-of-freedom roller deviation transmission adjustment mechanism.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A two-degree-of-freedom roller deviation transmission adjustment mechanism includes a main roller, an mounting hole provided in the inner cavity of the main roller, an eccentric bushing for connecting a transmission shaft installed in the mounting hole, a rotary drive device provided on one side of the main roller, a screw installed at the drive end of the rotary drive device, and the screw being threadedly connected to the eccentric bushing.

[0007] The outer side of the main roller is provided with a helical groove, and a wedge slider is engaged at the helical groove. The wedge slider is driven by a linear actuator.

[0008] Preferably, the main roller has an axially hollow structure and is integrally formed from GCr1 bearing steel.

[0009] Preferably, the eccentricity between the outer circle of the eccentric bushing and the inner hole of the main roller is 0.5-2mm, and it is circumferentially restricted to fit with the main roller through a key connection structure.

[0010] Preferably, the wedge slider is fixed to the frame via a guide rail, and the linear actuator is embedded in the rear end of the slider.

[0011] Preferably, the inclined wedge slider is disposed at both ends of the main roller, with an inclined surface angle of 15°.

[0012] Preferably, the linear actuator employs a piezoelectric ceramic actuator.

[0013] Compared with the prior art, the beneficial effects of this utility model are:

[0014] This invention achieves a flexible connection between the main roller and the drive shaft by setting mounting holes in the inner cavity of the main roller and installing an eccentric bushing. The rotary drive device drives the screw to screw into the eccentric bushing, which in turn drives the eccentric bushing to move, thereby adjusting the radial position of the main roller. The helical groove on the outer side of the main roller meshes with the wedge slider. Under the drive of the linear actuator, the movement of the wedge slider can be converted into the axial movement of the main roller, thus realizing the deviation transmission adjustment of the main roller in both radial and axial degrees of freedom. This greatly improves the mechanism's ability to adjust transmission deviations and its flexibility, and can better adapt to different transmission needs. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of a two-degree-of-freedom roller deviation transmission adjustment mechanism proposed in this utility model;

[0016] Figure 2 This is a top view of a two-degree-of-freedom roller deviation transmission adjustment mechanism proposed in this utility model.

[0017] In the diagram: 1. Main roller; 2. Mounting hole; 3. Eccentric bushing; 4. Wedge slider; 5. Helical groove; 6. Linear actuator; 7. Rotary drive device; 8. Screw; 10. Key connection structure. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0019] Reference Figures 1 to 2 A two-degree-of-freedom roller deviation transmission adjustment mechanism includes a main roller 1, an mounting hole 2 is provided in the inner cavity of the main roller 1, an eccentric bushing 3 for connecting a transmission shaft is installed in the mounting hole 2, a rotary drive device 7 is provided on one side of the main roller 1, and a screw 8 is installed at the drive end of the rotary drive device 7, and the screw 8 is threadedly connected to the eccentric bushing 3.

[0020] The outer side of the main roller 1 is provided with a helical groove 5, and a wedge slider 4 is engaged at the helical groove 5. The wedge slider 4 is driven by a linear actuator 6.

[0021] In use, this device achieves a flexible connection between the main roller 1 and the drive shaft by setting mounting holes 2 in the inner cavity of the main roller 1 and installing eccentric bushing 3. The rotary drive device 7 drives the screw 8 to be threadedly connected to the eccentric bushing 3, which can drive the eccentric bushing 3 to move, thereby adjusting the radial position of the main roller 1. The helical groove 5 on the outer side of the main roller 1 meshes with the wedge slider 4. Under the drive of the linear actuator 6, the movement of the wedge slider 4 can be converted into the axial movement of the main roller 1, thereby realizing the deviation transmission adjustment of the main roller 1 in both radial and axial degrees of freedom. This greatly improves the mechanism's ability to adjust transmission deviation and its flexibility, and can better adapt to different transmission needs.

[0022] Furthermore, the main roller 1 adopts an axially hollow structure and is integrally formed from GCr1 bearing steel. The axially hollow structure of the main roller 1 significantly reduces its own weight while ensuring structural strength, reducing inertia during movement and making the movement of the main roller 1 more flexible and responsive. The integral forming of GCr1 bearing steel utilizes the high strength, high hardness, and good wear resistance of this material, which greatly improves the service life and load-bearing capacity of the main roller 1. It can maintain stable performance under long-term high-intensity working environment and reduce equipment failures caused by wear or damage to the main roller 1.

[0023] Furthermore, the eccentricity between the outer circle of the eccentric bushing 3 and the inner hole of the main roller 1 is 0.5-2mm, and it is circumferentially restricted to the main roller 1 by a key connection structure 10. The eccentricity of the outer circle of the eccentric bushing 3 and the inner hole of the main roller 1 is set at 0.5-2mm. This reasonable eccentricity range provides sufficient adjustment margin for the radial fine adjustment of the main roller 1, which can meet the radial deviation correction requirements of different degrees. The circumferential restriction to the main roller 1 by the key connection structure 10 effectively prevents relative rotation between the eccentric bushing 3 and the main roller 1 in the circumferential direction, ensures the consistency of their movement, ensures the accuracy and stability of radial adjustment, and avoids adjustment errors caused by relative circumferential movement.

[0024] Furthermore, the wedge slider 4 is fixed to the frame via a guide rail, and the linear actuator 6 is embedded in the rear end of the slider. The wedge slider 4 is fixed to the frame via the guide rail, which allows the wedge slider 4 to move linearly along the guide rail, limiting its unnecessary degrees of freedom and ensuring the accuracy and stability of the movement of the wedge slider 4. This ensures the accuracy of the axial adjustment of the main roller 1. The linear actuator 6 is embedded in the rear end of the slider. This compact installation method saves installation space, makes the structure of the mechanism more compact, and also improves the efficiency of the linear actuator 6 in driving the wedge slider 4, reducing energy loss.

[0025] Furthermore, the wedge slider 4 is disposed at both ends of the main roller 1 with an inclination angle of 15°. The wedge slider 4 is disposed at both ends of the main roller 1, which can apply force to the main roller 1 from both ends, so that the main roller 1 is subjected to more uniform force during axial adjustment, avoiding deformation or movement deviation of the main roller 1 due to unilateral force, and ensuring the stability of adjustment. The 15° inclination angle design, after reasonable mechanical calculation, can convert the movement of the wedge slider 4 by the linear actuator 6 into a suitable axial displacement of the main roller 1 when it moves the same distance, which not only ensures the sensitivity of adjustment, but also enables relatively precise fine adjustment.

[0026] Furthermore, the linear actuator 6 employs a piezoelectric ceramic actuator. The piezoelectric ceramic actuator utilizes the characteristics of fast response speed, high displacement accuracy, and stable output force, making the motion control of the wedge slider 4 more precise. This, in turn, improves the axial adjustment accuracy and response speed of the main roller 1. The piezoelectric ceramic actuator is small in size and simple in structure, making it easy to install in a limited space and compatible with the compact design of the mechanism.

[0027] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A two-degree-of-freedom roller deviation transmission adjustment mechanism comprising a main roller (1), characterized in that: The main roller (1) has an installation hole (2) in its inner cavity. An eccentric bushing (3) for connecting the drive shaft is installed in the installation hole (2). A rotary drive device (7) is provided on one side of the main roller (1). A screw (8) is installed at the drive end of the rotary drive device (7), and the screw (8) is threadedly connected to the eccentric bushing (3). The outer side of the main roller (1) is provided with a spiral groove (5), and a wedge slider (4) is engaged at the spiral groove (5). The wedge slider (4) is driven by a linear actuator (6).

2. A two-degree-of-freedom roller deviation transmission adjustment mechanism according to claim 1, characterized in that: The main roller (1) adopts an axially hollow structure and is integrally formed from GCr1 bearing steel.

3. A two-degree-of-freedom roller deviation transmission adjustment mechanism according to claim 1, characterized in that: The eccentricity between the outer circle of the eccentric bushing (3) and the inner hole of the main roller (1) is 0.5-2mm, and it is circumferentially restricted to the main roller (1) by a key connection structure (10).

4. A dual degree of freedom roller deflection transmission adjustment mechanism according to claim 1, characterized in that: The wedge slider (4) is fixed to the frame via a guide rail, and the linear driver (6) is embedded in the rear end of the slider.

5. A two-degree-of-freedom roller deviation transmission adjustment mechanism according to claim 1, characterized in that: The inclined wedge slider (4) is located at both ends of the main roller (1), with an inclined angle of 15°.

6. The dual-degree-of-freedom roller deviation transmission adjustment mechanism according to claim 1, characterized in that: The linear actuator (6) employs a piezoelectric ceramic actuator.

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