A vibration-free transmission device and a frictionless support mechanism applied thereto

Abstract

The present invention provides a vibration-free transmission device and a frictionless support mechanism applied thereto. The base is provided with a groove, a first slide rail is arranged in the groove, a first slider is slidably connected to the periphery of the first slide rail, a fixing seat is installed at the upper end of the first slider, a transmission nut is fixedly installed on one side of the first slider, the periphery of a lead screw is threadedly connected into the transmission nut, one end of the lead screw is fixedly connected to the output shaft of a transmission motor, and the transmission motor is fixedly installed on the periphery of the base. For the vibration-free transmission device and the frictionless support mechanism applied thereto according to the present invention, the two air feet together form an axial thrust on the air floating seat to restrict the axial movement of the air floating seat. A vertical support air film is formed between the periphery of the air feet and the second end face of the air floating seat. The two air feet support the air floating seat through the vertical support air film, so that the air floating seat is in a suspended state, and it can be widely applied to the gravity-free movement or simulation test of products.

Description

Technical Field

[0001] The present invention belongs to the field of mechanical manufacturing, and particularly relates to a vibration-free transmission device and a frictionless support mechanism applied thereto. Background Art

[0002] The manufacturing precision of precision parts represents the manufacturing ability and technological level of an enterprise. The testing of precision parts products needs to be carried out in a non-destructive environment. In the testing of transmission components, the transmission components are usually passive components. The test results can be judged by the clearance between the transmission components and the active moving components and the transmission vibration data. In the prior art for the transmission testing of precision parts, due to the friction or vibration between the active moving components, the test data is often distorted, resulting in test failure. Summary of the Invention

[0003] In view of this, the present invention aims to propose a frictionless support mechanism to solve the problem that in the prior art, when the product base is supported and the product rotates or slides, there is friction between the hinged or sliding components of the base, interfering with the movement of the product.

[0004] To achieve the above object, the technical solution of the present invention is realized as follows:

[0005] A frictionless support mechanism includes a fixed seat, an air floating seat, air feet and ball head screws. The fixed seat is provided with an installation groove, and a ball head screw is fixedly installed on each of the two side walls of the installation groove through a ball head lock nut. One end of each ball head screw is provided with an air foot, the two air feet are arranged oppositely, an air floating seat is arranged between the two air feet, and there is an equalizing gap between each side of the air floating seat and one side of an air foot. Each air foot is provided with an air hole, and the air hole is communicated to an air compressor through a pipeline. The air compressor fills compressed air into the equalizing gap through the air hole, and the compressed air forms an equalizing air film in the equalizing gap.

[0006] Further, the cross-section of the air floating seat is a T-shaped structure. The first side of the air foot forms an axial thrust air film with the first end face of the air floating seat, and the periphery of the air foot forms a vertical support air film with the second end face of the air floating seat.

[0007] Compared with the prior art, the frictionless support mechanism of the present invention has the following beneficial effects: The first side of the air foot forms an axial thrust air film with the first end face of the air floating seat, and the two air feet jointly form an axial thrust on the air floating seat to restrict the axial movement of the air floating seat. The periphery of the air foot forms a vertical support air film with the second end face of the air floating seat, and the two air feet support the air floating seat through the vertical support air film, making the air floating seat in a suspended state. This frictionless support mechanism can be widely applied to the gravity-free movement or simulation test of products, and multiple such support structures can also be circumferentially distributed on the product for frictionless fixed-angle of the product.

[0008] Another object of the present invention is to provide a vibration-free transmission device to solve the problem that in the existing transmission module, when transmitting products, the vibration of the products is caused by the influence of transmission components or mating clearances.

[0009] To achieve the above object, the technical solution of the present invention is realized as follows:

[0010] A vibration-free transmission device includes a base, a lead screw, a transmission nut, a first slider and a first slide rail. The base is provided with a groove, and the first slide rail is arranged in the groove. The outer periphery of the first slide rail is slidably connected to the first slider, and a fixing seat is installed at the upper end of the first slider. A transmission nut is fixedly installed on one side of the first slider, and the outer periphery of the lead screw is threadedly connected into the transmission nut. One end of the lead screw is fixedly connected to the output shaft of the transmission motor, and the transmission motor is fixedly installed on the outer periphery of the base.

[0011] Further, a first chute is provided at the lower end of the first slider, and the outer periphery of the first slide rail is located in the first chute. The first slider is evenly provided with first through holes, and the first through holes are communicated to an air compressor through pipelines. The air compressor fills compressed air into the first chute through the first through holes, and the compressed air forms a first static pressure air film between the outer periphery of the first slide rail and the inner wall of the first chute.

[0012] Further, a second slider is respectively arranged at both ends of the air floating seat, and second slide rails are installed on both side walls of the base. The outer periphery of the second slide rail is slidably connected to the lower end of the second slide hole.

[0013] Further, a second chute is provided at the lower end of the second slider, and the outer periphery of the second slide rail is located in the second chute. The second slider is evenly provided with second through holes, and the second through holes are communicated to an air compressor through pipelines. The air compressor fills compressed air into the second chute through the second through holes, and the compressed air forms a second static pressure air film between the outer periphery of the second slide rail and the inner wall of the second chute.

[0014] Compared with the prior art, the vibration-free transmission device of the present invention has the following advantages: the vibration generated by the motor, the vibration generated between the lead screw and the nut, and the vibration generated between the first slider and the first slide rail will all be transmitted to the air foot through the fixing seat, and the air foot supports or drives the air floating seat through the axial thrust air film and the vertical support air film, so that the vibration will not be transmitted to the air floating seat, and the product is placed on the air floating seat, which can realize the vibration-free transmission or displacement of the product. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] The drawings forming a part of the present invention are used to provide a further understanding of the present invention. The schematic embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention. In the drawings:

[0016] Figure 1Structural schematic diagram of a frictionless support mechanism according to an embodiment of the present invention;

[0017] Figure 2 Cross-sectional schematic diagram of a frictionless support mechanism according to an embodiment of the present invention;

[0018] Figure 3 Structural schematic diagram of a vibration-free transmission device implemented by applying a frictionless support mechanism according to an embodiment of the present invention;

[0019] Description of reference numerals:

[0020] 1 - Fixed seat; 2 - Air floating seat; 21 - First end face; 22 - Second end face; 3 - Air foot; 4 - Ball head lock nut; 5 - Ball head screw; 6 - Base; 7 - Lead screw; 8 - Transmission nut; 9 - First slider; 10 - First slide rail; 11 - Second slider; 12 - Second slide rail. Detailed implementation manners

[0021] It should be noted that, without conflict, the embodiments in the present invention and the features in the embodiments may be combined with each other.

[0022] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention 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 thus should not be construed as a limitation to the present invention. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present invention, unless otherwise specified, the meaning of "a plurality" is two or more.

[0023] In the description of the present invention, it should be noted that, unless otherwise clearly defined and limited, the terms "mounted", "connected", "coupled" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific situations.

[0024] The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0025] As shown Figure 1-2 in the figure, a frictionless support mechanism includes a fixed seat 1, an air floating seat 2, air feet 3 and a ball head screw 5. The fixed seat 1 is provided with an installation groove, and a ball head screw 5 is fixedly installed on each of the two side walls of the installation groove through a ball head lock nut 4. One end of each ball head screw 5 is provided with an air foot 3. The air foot 3 can change the angle relative to the fixed seat 1 through the ball head of the ball head screw 5. The two air feet 3 are arranged oppositely, and an air floating seat 2 is arranged between the two air feet 3. A pressure equalizing gap is provided between each side of the air floating seat 2 and one side of an air foot 3. Each air foot 3 is provided with an air hole, and the air hole is communicated to an air compressor through a pipeline. The air compressor fills compressed air into the pressure equalizing gap through the air hole. The compressed air forms a pressure equalizing air film in the pressure equalizing gap. As shown Figure 2 in the figure, the cross-section of the air floating seat 2 is a T-shaped structure. The first side of the air foot 3 and the first end face 21 of the air floating seat 2 form an axial thrust air film. The two air feet 3 together form an axial thrust on the air floating seat 2 to restrict the axial movement of the air floating seat 2. The periphery of the air foot 3 and the second end face 22 of the air floating seat 2 form a vertical support air film. The two air feet 3 support the air floating seat 2 through the vertical support air film, so that the air floating seat 2 is in a suspended state. This frictionless support mechanism can be widely used in the zero-gravity movement or simulation test of products. Multiple such support structures can also be circumferentially distributed around the product for frictionless fixed-angle of the product.

[0026] As shown Figure 1-3 in the figure, a vibration-free transmission device implemented by applying the above frictionless support mechanism includes a base 6, a lead screw 7, a transmission nut 8, a first slider 9 and a first slide rail 10. The base 6 is provided with a groove, and a first slide rail 10 is arranged in the groove. The periphery of the first slide rail 10 is slidably connected to the first slider 9, and the fixed seat 1 is installed at the upper end of the first slider 9. A transmission nut 8 is fixedly installed on one side of the first slider 9. The periphery of the lead screw 7 is threadedly connected into the transmission nut 8. One end of the lead screw 7 is fixedly connected to the output shaft of a transmission motor, and the transmission motor is fixedly installed on the periphery of the base 6. The lead screw 7 rotates through the transmission motor. The rotating lead screw 7 drives the transmission nut 8 to move forward. The vibrations generated by the motor, as well as the vibrations generated between the lead screw 7 and the nut, and the vibrations generated between the first slider 9 and the first slide rail 10 will all be transmitted to the air foot 3 through the fixed seat 1. The air foot 3 supports or drives the air floating seat 2 through the axial thrust air film and the vertical support air film, so that the vibration will not be transmitted to the air floating seat 2. The product is placed on the air floating seat 2, and vibration-free transmission or displacement of the product can be achieved.

[0027] During implementation, a first chute may be provided at the lower end of the first slider 9. The outer periphery of the first slide rail 10 is located within the first chute. First through holes are evenly distributed on the first slider 9. The first through holes are connected to an air compressor through pipelines. The air compressor fills compressed air into the first chute through the first through holes. The compressed air forms a first static pressure air film between the outer periphery of the first slide rail 10 and the inner wall of the first chute. The first static pressure air film is used to reduce or eliminate the friction between the first slide rail 10 and the first slider 9, reduce the torque transmission loss and the vibration of the components.

[0028] A second slider 11 is respectively arranged at both ends of the air floating seat 2. Second slide rails 12 are installed on both side walls of the base 6. The outer periphery of the second slide rails 12 is slidably connected to the lower end of the second slide holes. The cooperation between the first slide rail 10 and the second slider 11 is used to support the air floating seat 2 and increase the load of the air floating seat 2.

[0029] A second chute is provided at the lower end of the second slider 11. The outer periphery of the second slide rail 12 is located within the second chute. Second through holes are evenly distributed on the second slider 11. The second through holes are connected to an air compressor through pipelines. The air compressor fills compressed air into the second chute through the second through holes. The compressed air forms a second static pressure air film between the outer periphery of the second slide rail 12 and the inner wall of the second chute. The second static pressure air film is used to reduce or eliminate the friction between the second slide rail 12 and the second slider 11, reduce the torque transmission loss and the vibration of the components.

[0030] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

Claims

1. A frictionless support mechanism, characterized in that: It includes a fixed seat (1), an air floating seat (2), air feet (3) and a ball screw (5). An installation groove is provided on the fixed seat (1), and a ball screw (5) is fixedly installed on each of the two side walls of the installation groove through a ball head lock nut (4). One end of each ball screw (5) is provided with an air foot (3). The two air feet (3) are arranged oppositely. An air floating seat (2) is arranged between the two air feet (3). A pressure equalizing gap is provided between each side of the air floating seat (2) and one side of an air foot (3). Each air foot (3) is provided with an air hole, and the air hole is connected to an air compressor through a pipeline. The air compressor fills compressed air into the pressure equalizing gap through the air hole, and the compressed air forms a pressure equalizing air film in the pressure equalizing gap. The cross-section of the air floating seat (2) is a T-shaped structure. The first side of the air foot (3) forms an axial thrust air film with the first end face (21) of the air floating seat (2), and the periphery of the air foot (3) forms a vertical support air film with the second end face (22) of the air floating seat (2).

2. A vibration-free transmission device, which applies the frictionless support mechanism described in claim 1, and is characterized in that: It includes a base (6), a lead screw (7), a transmission nut (8), a first slider (9) and a first slide rail (10). The base (6) is provided with a groove, and the first slide rail (10) is arranged in the groove. The periphery of the first slide rail (10) is slidably connected to the first slider (9), and the fixed seat (1) is installed at the upper end of the first slider (9). A transmission nut (8) is fixedly installed on one side of the first slider (9). The periphery of the lead screw (7) is threadedly connected into the transmission nut (8). One end of the lead screw (7) is fixedly connected to the output shaft of a transmission motor, and the transmission motor is fixedly installed on the periphery of the base (6).

3. The non-vibrating conveying device according to claim 2, characterized in that: A first chute is provided at the lower end of the first slider (9), and the periphery of the first slide rail (10) is located in the first chute. The first slider (9) is evenly distributed with first through holes, and the first through holes are connected to an air compressor through a pipeline. The air compressor fills compressed air into the first chute through the first through holes, and the compressed air forms a first static pressure air film between the periphery of the first slide rail (10) and the inner wall of the first chute.

4. The non-vibrating conveying device according to claim 3, characterized in that: A second slider (11) is arranged at each end of the air floating seat (2), and second slide rails (12) are installed on the two side walls of the base (6). The periphery of the second slide rail (12) is slidably connected to the lower end of the second slide hole.

5. The non-vibrating conveying device according to claim 3, characterized in that: A second chute is provided at the lower end of the second slider (11), and the periphery of the second slide rail (12) is located in the second chute. The second slider (11) is evenly distributed with second through holes, and the second through holes are connected to an air compressor through a pipeline. The air compressor fills compressed air into the second chute through the second through holes, and the compressed air forms a second static pressure air film between the periphery of the second slide rail (12) and the inner wall of the second chute.

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