Driver

Abstract

The utility model relates to the technical field of precision driving, and provides a driver which comprises a first part and a second part, the first part is connected with the second part, the first part and the second part are both filled with fluid, and the first part is a flexible pipeline; the first part is extruded, so that the first part is deformed, all or part of fluid in the first part enters the second part, one end or multiple ends of the second part are deformed to generate displacement, and the stroke generated by extruding the first part is larger than the displacement. Fluid flows between the flexible pipeline and the capsule body by extruding the flexible pipeline, the technical problem that high-frequency actuation of the input end is difficult to achieve is solved, meanwhile, the problem that the cylinder body and the piston are difficult to seal in the prior art is solved, the structure is simple, cost is low, and implementation is easy.

Description

Technical Field

[0001] This utility model relates to the field of precision drive technology, specifically to a driver. Background Technology

[0002] Precision drive systems are an important component of precision machining. There are various precision feed design schemes in the existing technology. One of these designs uses two cylinders with different cross-sectional areas that are connected. The cylinders are equipped with pistons and filled with fluid. The cylinder with the smaller cross-sectional area serves as the input end, and the cylinder with the larger cross-sectional area serves as the output end. The output end is fed by the piston pushing the fluid to flow. The fluid enters the large cylinder by driving the piston in the small cylinder. This allows for short-stroke fluid movement in the large cylinder, ultimately achieving the effect of precision feed.

[0003] In existing technologies, when the output end requires high-frequency, high-thrust reciprocating motion, the input end motor needs to reciprocate at a high frequency. For example, the input end motor needs to reciprocate 10 times per second to meet the output end's requirements. In this case, due to the large feed stroke, it is difficult for the input end motor to achieve high-frequency operation. At the same time, the sealing problem between the two cylinders and the piston has also become a technical challenge for high-frequency motion, and a new device is urgently needed to solve these problems. Utility Model Content

[0004] In view of the deficiencies in the prior art, the purpose of this utility model is to provide a driver.

[0005] According to the present invention, a driver includes a first component and a second component, wherein the first component is connected to the second component and both are filled with fluid, and the first component is a flexible pipe.

[0006] Squeezing the first component can deform the first component, thereby allowing all or part of the fluid in the first component to enter the second component, and thereby causing one or more ends of the second component to deform and generate displacement, wherein the stroke generated by squeezing the first component is greater than the displacement.

[0007] According to the present invention, a driver includes a first component and a second component, wherein the first component is connected to the second component and both are filled with fluid, and the first component is a flexible pipe.

[0008] Twisting the first component can deform the first component, thereby allowing all or part of the fluid in the first component to enter the second component, and thereby causing one or more ends of the second component to deform and displace, wherein the deformation of the first component is greater than the displacement.

[0009] Preferably, one or both ends of the flexible pipe are connected to the second component;

[0010] The flexible pipe may be a single pipe or multiple pipes arranged in a crisscross pattern.

[0011] Preferably, the extrusion direction is along the radial direction of the flexible conduit.

[0012] Preferably, the flexible pipe has a variable diameter along its length.

[0013] Preferably, the second component includes a capsule and a housing disposed outside the capsule, the housing having an opening, wherein when the first component deforms, the end of the capsule generates the displacement and extends at the opening.

[0014] Preferably, the flexible tube is bonded to or integrally formed with the capsule.

[0015] Preferably, a transmission element is provided at the end of the bladder that generates the displacement.

[0016] Preferably, the force that compresses the first component comes from the cooperation of the electromagnet and the first permanent magnet.

[0017] Preferably, the third component that squeezes the first component after the electromagnet is de-energized has a position-holding function.

[0018] Compared with the prior art, the present invention has the following beneficial effects:

[0019] This invention connects a flexible pipe to a second component, and achieves fluid flow between the flexible pipe and the second component by squeezing or twisting the flexible pipe. Since the output end of the second component has a large diameter and the flexible pipe has a small diameter, the squeezing actuator or twisting actuator can greatly shorten the actuation stroke, thereby meeting the requirements of high-frequency actuation. Therefore, by squeezing or twisting the flexible pipe, a smaller stroke feed can be achieved at the output end of the second component, improving feed accuracy and solving the problems of precision feed and high-frequency actuation input. At the same time, the connection between the flexible pipe and the second component is easy to seal, solving the problem of cylinder and piston sealing in the prior art. The structure is simple, the cost is low, and it is easy to implement. Attached Figure Description

[0020] Other features, objects, and advantages of this invention will become more apparent from the following detailed description of non-limiting embodiments with reference to the accompanying drawings:

[0021] Figure 1 This is a schematic cross-sectional view of the structure of this utility model;

[0022] Figure 2 This is a schematic diagram of the structure of a flexible pipe after it has been compressed and deformed.

[0023] Figure 3 This is a schematic diagram of the structure when the transmission component moves towards the shell under the action of external atmospheric pressure after the extrusion pressure of the flexible pipe is removed.

[0024] Figure 4 This is a schematic diagram of a flexible pipe with a variable diameter along its length.

[0025] Figure 5 This is a schematic diagram of the structure of the first component in Example 3 when it undergoes torsional deformation;

[0026] Figure 6 A schematic cross-sectional view of a flexible pipeline arranged in a cross shape.

[0027] Figure 7 A top view of the structure when flexible pipes are arranged in a cross shape;

[0028] Figure 8 This is a schematic cross-sectional view of the structure in Example 6;

[0029] Figure 9 This is a schematic diagram of the structure of the electromagnet generating a magnetic field in Example 6;

[0030] Figure 10 This is a schematic diagram of the structure of the electromagnet in Example 6 when it is not energized;

[0031] Figure 11 This is a schematic diagram of the structure in Example 6 when a force sensor, a displacement sensor, and a second permanent magnet are configured.

[0032] The diagram shows:

[0033] First component 1;

[0034] Pressure plate 11;

[0035] Force sensor 111;

[0036] Second component 2;

[0037] 21 capsules;

[0038] Casing 22;

[0039] Transmission component 3;

[0040] Electromagnet 4;

[0041] Displacement sensor 41;

[0042] First permanent magnet 5;

[0043] Spring 6;

[0044] Second permanent magnet 7;

[0045] Actuator 8. Detailed Implementation

[0046] The present invention will now be described in detail with reference to specific embodiments. These embodiments will help those skilled in the art to further understand the present invention, but do not limit the present invention in any way. It should be noted that those skilled in the art can make several changes and improvements without departing from the concept of the present invention. These all fall within the protection scope of the present invention.

[0047] Example 1:

[0048] This utility model provides a driver, including a first component 1 and a second component 2. The first component 1 is connected to the second component 2. Both the first component 1 and the second component 2 are filled with fluid. Squeezing the first component 1 can deform the first component 1, thereby allowing all or part of the fluid in the first component 1 to enter the second component 2, causing one end of the second component 2 to deform and generate displacement. The displacement generated at the end of the second component 2 is L1, and the stroke generated by squeezing the first component 1 is L2, where L2 is greater than L1.

[0049] In practical applications, the L2 can be flexibly selected according to the actual application scenario of the driver. For example, L2 is more than 5 times L1; L2 is more than 10 times L1; L2 is more than 100 times L1, etc. Therefore, by setting the stroke generated by the extrusion of the first component 1 to be greater than the displacement generated by the end deformation of the second component 2, a more precise stroke feed can be achieved.

[0050] Specifically, such as Figure 1 As shown, the first component 1 is a flexible pipe, preferably a single flexible pipe, and preferably a thin pipe. One or both ends of the flexible pipe are connected to the second component 2.

[0051] Specifically, the second component 2 includes a capsule 21 and a shell 22 disposed outside the capsule 21. The capsule 21 is a flexible structure, and the shell 22 serves to constrain and support the capsule 21, allowing it to maintain a certain shape and prevent deformation. The shell 22 has an opening, which serves as a channel when the capsule 21 expands. The expanded portion of the capsule 21 can extend along the opening. When the first component 1 is compressed and deformed, the fluid in the first component 1 is compressed, thus forcing some or all of the fluid into the capsule 21. Due to the influx of fluid, the volume of the capsule 21 increases, therefore, the end of the capsule 21 is displaced and extends outward along the opening, such as... Figure 2 As shown.

[0052] Specifically, a flexible pipe can be arranged on the surface of the housing 22, with the side of the housing 22 on which the flexible pipe is arranged serving as a support surface. Preferably, the flexible pipe is arranged parallel to the support surface of the housing 22. The support surface of the housing 22 can be set as a plane, which can provide support when the flexible pipe is squeezed, allowing for partial or complete squeezing of the flexible pipe and thus partially or completely extruding the fluid in the flexible pipe, achieving different feeding actions. This invention arranges a slender flexible pipe outside the capsule 21 and achieves feeding displacement at the end of the capsule 21 by squeezing the flexible pipe. The lateral squeezing of the slender flexible pipe has a short stroke, making it easy to achieve high-frequency reciprocating motion of the motor at the input end. By inputting a small range of precision force, a smaller range of high-load precision force output can be obtained, solving the problem of difficult high-frequency actuation input and achieving the effect of precise stroke and accurate force output.

[0053] In practical applications, the flexible pipe possesses elastic recovery capability, high rigidity, and high fatigue strength. It can be fixedly connected to the end of the actuator that applies pressure, enabling the flexible pipe and the actuator to reciprocate at the same frequency, thereby achieving the reciprocating feeding motion of the end of the capsule 21. Specifically, the actuator can be an electric motor, specifically a short-stroke high-frequency motor, to solve the problem of difficulty in achieving full-stroke high-frequency operation. Alternatively, a direct-drive motor can be used, such as a voice coil motor, cam drive, pneumatic drive, or direct drive using smart materials.

[0054] It should be noted that the flexible pipe and the bladder 21 can be connected by adhesive bonding or by integral molding. Through the above methods, a good sealing connection between the flexible pipe and the bladder 21 can be achieved, which solves the technical problem of difficult sealing between the cylinder and the piston in high-frequency reciprocating drive in the prior art.

[0055] Furthermore, the end of the bladder 21 that generates displacement is provided with a transmission member 3. When fluid flows into the interior of the bladder 21, the end of the bladder 21 is displaced in the direction of the opening outward. At this time, the end of the bladder 21 drives the transmission member 3 to move. The transmission member 3 can be attached to the surface of the bladder.

[0056] Specifically, the transmission component 3 can be designed to match the end of the second component 2. When no fluid enters the bladder 21, the transmission component 3 is engaged with the housing 22. For example, the ends of the transmission component 3 and the housing 22 are in a sliding fit. It should be noted that the transmission component 3 can be a plate-like structure or a block-like structure. Other components can be configured on the transmission component 3 to achieve corresponding functions, such as configuring cutting tools to achieve precise feed motion of the cutting tools. The transmission component 3 can also be used as a direct actuator to achieve precise displacement function.

[0057] Example 2:

[0058] The difference between this embodiment and Embodiment 1 is that the flexible pipe has a variable diameter along its length, such as... Figure 4 As shown, the outer diameters of the three arrows on the flexible pipe are different. When different parts are squeezed separately, the deformation of the end of the second component 2, which has the same extrusion surface and stroke, produces different displacements, thus enabling precise feeding operations with different displacements.

[0059] In this embodiment, the first component 1 of the stroke can also be combined in series and parallel by flexible pipes of different diameters. By squeezing a certain part or squeezing multiple parts at the same time, precise feeding operations with different displacements can also be achieved.

[0060] Example 3:

[0061] This embodiment provides an actuator, including a first component 1 and a second component 2. The first component is connected to the second component 2, and both are filled with fluid. Unlike embodiment 1, the first component 1 is deformed by twisting it, and the deformation of the first component 1 is greater than the displacement generated at the end of the second component 2. In this embodiment, the deformation of the first component 1 can be understood as the change in the inner diameter of the flexible pipe before and after deformation. When all the fluid in the flexible pipe is squeezed out by twisting, the deformation of the first component 1 is equal to the inner diameter of the flexible pipe.

[0062] like Figure 5 As shown, one end of the first component 1 is connected to the capsule 21.

[0063] In this embodiment, the torsion can be driven by an electromagnetic coil in conjunction with a third permanent magnet. By controlling the magnetic poles of the electromagnetic coil and the magnitude of the current, the third permanent magnet can be driven to swing back and forth. Since the first component 1 is a thin flexible pipe, the swing stroke is very small, which can also achieve the effect of the electromagnetic coil driving the third permanent magnet to swing at high frequency.

[0064] Example 4:

[0065] The difference between this embodiment and embodiment 1 is that the flexible pipes are multiple pipes arranged in a cross pattern. The flexible pipes can be made of rubber pipes, and the arrangement can be flexibly selected according to the actual application scenario.

[0066] like Figure 6 , Figure 7 As shown, the flexible pipe consists of two vertically intersecting pipes, with the intersection of the two flexible pipes connected in the middle.

[0067] Example 5:

[0068] The difference between this embodiment and embodiment 1 is that squeezing the first component 1 can cause multiple ends of the second component 2 to deform and displace, which can achieve multiple output pipelines and realize a multi-channel precise peristaltic output effect.

[0069] Example 6:

[0070] The difference between this embodiment and embodiment 1 is that it also includes an electromagnet 4 and a first permanent magnet 5, and the force that squeezes the first component 1 comes from the cooperation of the electromagnet 4 and the first permanent magnet 5.

[0071] Specifically, such as Figure 8 As shown, both the electromagnet 4 and the housing 22 are fixed. The electromagnet 4 is arranged circumferentially at one end of the first permanent magnet 5, and a pressure plate 11 is disposed at the other end of the first permanent magnet 5. Figure 9 As shown, when the electromagnet 4 is supplied with a positive current, it can drive the first permanent magnet 5 to drive the pressure plate 11 to squeeze the flexible pipe. At this time, the transmission component 3 moves away from the shell 22. When the electromagnet 4 is supplied with a negative current, it can drive the first permanent magnet 5 to drive the pressure plate 11 to move away from the flexible pipe. At this time, driven by the external atmospheric pressure, the transmission component 3 moves towards the shell 22, and part of the fluid in the capsule 21 flows into the flexible pipe.

[0072] It should be noted that the pressure plate 11 is preferably bonded to the flexible pipe.

[0073] In this embodiment, the third component of the first component 1, which is pressed by the electromagnet 4 after being de-energized, has a position-holding function. Specifically, the third component in this embodiment is a pressure plate 11, and a spring 6 is provided between the electromagnet 4 and the first permanent magnet 5. The spring is designed to push the first permanent magnet 5 and the pressure plate 11 to press the flexible pipe in its natural state. Therefore, when the electromagnet 4 is de-energized, the magnetic field strength generated by the electromagnet 4 is 0. Figure 10 As shown, the spring 6 elastically pushes the pressure plate 11 to press the flexible pipe, thereby achieving the function of maintaining the position when the power is off.

[0074] This embodiment also includes a displacement sensor 41, a force sensor 111, and a second permanent magnet 7, such as Figure 11 As shown, the electromagnet 4 is fixed on the support frame, and the displacement sensor 41 is also fixed on the support frame to detect the displacement of the pressure plate 11. The displacement sensor 41 can be a magnetoelectric sensor, a magnetostrictive sensor, etc. The force sensor 111 is arranged between the first permanent magnet 5 and the pressure plate 11 to detect the pressure of the first permanent magnet 5 on the pressure plate 11. In this embodiment, the displacement sensor 41 and the force sensor 111 are configured at the input end rather than the output end, making detection easier. The second permanent magnet 7 is arranged between the housing 22 and the flexible pipe. The side of the flexible pipe facing the second permanent magnet 7 is provided with a protective plate or protective layer to protect the flexible pipe. The first permanent magnet 5 and the second permanent magnet 7 are configured to repel each other magnetically, which helps the flexible pipe wall to open and close at high frequency.

[0075] by Figures 1 to 3 For example, the working principle of this utility model is as follows:

[0076] The first component 1 is a flexible tube, preferably a thin tube, for example, with an inner diameter of 1 mm and an inner diameter of 10 mm for the shell opening. The two ends of the flexible tube are respectively connected to the two ends of the bladder 21, and the flexible tube and the bladder 21 are connected by adhesive bonding.

[0077] Specifically, when the motor drives the actuating plate 8 to move radially toward the flexible pipe, the motor's stroke is very small due to the very small diameter of the flexible pipe. This facilitates high-frequency actuation. After the actuating plate 8 compresses the flexible pipe, the fluid enters the capsule 21. Under the constraint and support of the shell 22, the capsule 21 expands and deforms along the opening direction, thereby driving the transmission components to move. Figure 2 As shown.

[0078] like Figure 3 As shown, when the motor drives the actuator plate 8 to move away from the flexible pipe in the radial direction, the transmission component 3 moves towards the housing 22 under the drive of the external atmospheric pressure, and part of the fluid in the bladder 21 flows into the flexible pipe.

[0079] In the description of this application, it should be understood that the terms "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "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 this application 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 this application.

[0080] The specific embodiments of this utility model have been described above. It should be understood that this utility model is not limited to the specific embodiments described above, and those skilled in the art can make various changes or modifications within the scope of the claims, which do not affect the substantive content of this utility model. Unless otherwise specified, the embodiments and features described in this application can be arbitrarily combined with each other.

Claims

1. A driver, characterized by, It includes a first component (1) and a second component (2), the first component (1) is connected to the second component (2) and both are filled with fluid, the first component (1) is a flexible pipe; Squeezing the first component (1) can deform the first component (1) so that all or part of the fluid in the first component (1) enters the second component (2) so that one or more ends of the second component (2) are deformed and displaced, wherein the stroke generated by squeezing the first component (1) is greater than the displacement.

2. The driver of claim 1, wherein, The direction of the extrusion is along the radial direction of the flexible conduit.

3. The driver of claim 1, wherein, The flexible pipe has a variable diameter along its length.

4. The driver of claim 1, wherein, The force that squeezes the first component (1) comes from the cooperation of the electromagnet (4) and the first permanent magnet (5).

5. The driver according to claim 4, characterized in that, The third component of the first component (1) is pressed after the electromagnet (4) is de-energized, and has a position holding function.

6. A driver characterized by comprising: It includes a first component (1) and a second component (2), the first component is connected to the second component (2) and both are filled with fluid, the first component (1) is a flexible pipe; Twisting the first component (1) can deform the first component (1) so that all or part of the fluid in the first component (1) enters the second component (2) and causes one or more ends of the second component (2) to deform and produce displacement, wherein the deformation of the first component (1) is greater than the displacement.

7. The driver according to claim 1 or 6, characterized in that, One or both ends of the flexible pipe are connected to the second component (2); The flexible pipe may be a single pipe or multiple pipes arranged in a crisscross pattern.

8. The driver of claim 1 or 6, wherein The second component (2) includes a capsule (21) and a housing (22) disposed outside the capsule (21), the housing (22) having an opening, the end of the capsule (21) being displaced and extending at the opening when the first component (1) is deformed.

9. The driver of claim 8, wherein, The flexible tube is bonded to or integrally formed with the capsule (21).

10. The driver of claim 8, wherein, The end of the capsule (21) that generates the displacement is provided with a transmission element (3).

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