Automatic plane fine-tuning positioning device and use method thereof

Abstract

The present invention provides an automatic plane fine-tuning positioning device and a method for using the same. The automatic plane fine-tuning positioning device includes a positioning member; an adjusting member for fixing a product to be adjusted having an adjustment plane; a first mating member disposed on the positioning member; a second mating member disposed on the adjusting member; and an elastic member connected to the positioning member and the adjusting member at both ends; the first mating member and the second mating member abut against each other and form a static friction fit under the elastic force of the elastic member; the adjusting member is configured to overcome the static friction between the first mating member and the second mating member under the action of an external force, causing the adjusting member to displace relative to the positioning member to adjust the inclination of the adjustment plane; the first mating member and the second mating member are configured to fix the relative positions of the positioning member and the adjusting member by static friction when the adjustment plane reaches a predetermined inclination. The device solves the problems of low integration, poor operational convenience, and sensitivity to temperature changes in existing devices.

Description

Technical Field

[0001] The present invention relates to the field of precision positioning technology, and more particularly to an automatic plane fine-tuning positioning device and a method for using the same. Background Art

[0002] Precision positioning technology is an indispensable core technology in modern manufacturing, assembly, and experimentation. This is especially true in high-precision fields such as optics, electronics, mechanical manufacturing, and micro- and nanotechnology. Accurate positioning and adjustment are crucial to ensuring the accuracy of equipment operation and experimental results. Planar fine-tuning positioning devices, a key branch of precision positioning technology, are widely used in various scenarios requiring subtle position adjustment and positioning.

[0003] Currently, there are a variety of devices for precision position adjustment, including manual screw fine-tuning devices and piezoelectric-driven fine-tuning devices. These devices often rely on complex structures, control systems, or the unique properties of materials to achieve tiny displacements and precise positioning. However, existing planar fine-tuning positioning devices still face the following major challenges in practical applications: 1. Complex operation and difficulty in adjustment: Many existing fine-tuning devices require manual operation, and the accuracy of the adjustment process is difficult to control. For example, while manual screw fine-tuning devices can provide a relatively simple method for precision adjustment, manual operation is often not precise enough for high-precision equipment, resulting in a difficult, time-consuming, and inefficient adjustment process. 2. Low integration: Existing fine-tuning devices are often designed in a relatively independent manner and lack modular integration, which cannot effectively meet the requirements of collaborative operation in complex systems. In particular, in integrated systems, the interconnection, coordination, and spatial layout of multiple devices often lead to reduced efficiency and accuracy. 3. Difficulty in device maintenance and high cost: Most fine-tuning devices rely on precise threads or special materials, which are expensive to obtain and manufacture. For example, piezoelectrically driven fine-tuning devices can provide nanometer-level precision, but their working range is small, they are sensitive to temperature changes, and the devices are difficult to maintain, which is not conducive to long-term experimental operation. Summary of the Invention

[0004] In view of the above problems, the present invention provides an automatic plane fine-tuning positioning device to solve the problems of low integration, poor operation convenience and sensitivity to temperature changes in existing devices.

[0005] To achieve the above object, the present invention adopts the following technical solutions:

[0006] The present invention provides an automatic plane fine-tuning positioning device, comprising:

[0007] A positioning member; an adjusting member for fixing a product to be adjusted having an adjustment plane; a first mating member provided on the positioning member; a second mating member provided on the adjusting member; and an elastic member having two ends respectively connected to the positioning member and the adjusting member;

[0008] The first matching member and the second matching member abut against each other and form a static friction fit under the elastic force of the elastic member;

[0009] The adjusting member is configured to overcome the static friction between the first mating member and the second mating member under the action of an external force, so that the adjusting member is displaced relative to the positioning member to adjust the inclination of the adjustment plane;

[0010] The first matching member and the second matching member are configured to fix the relative positions of the positioning member and the adjusting member by static friction when the adjustment plane reaches a predetermined inclination.

[0011] A preferred solution is that the number of the first matching pieces and the second matching pieces are at least three and they correspond one to one; the first matching pieces are evenly arranged along the circumference of the positioning piece, and the second matching pieces are evenly arranged along the circumference of the adjusting piece.

[0012] A preferred solution is that the axis of the first matching piece is perpendicular to the axis of the second matching piece, and the peripheral side wall of the first matching piece abuts against the peripheral side wall of the second matching piece.

[0013] A preferred solution is that the number of the elastic members is at least three, and the automatic plane fine-tuning positioning device further includes a first connecting member arranged on the positioning member and a second connecting member arranged on the adjusting member; one end of the elastic member is connected to the first connecting member, and the other end is connected to the second connecting member.

[0014] A preferred solution is that the first connecting member includes a first structural part and a second structural part that are perpendicular to each other; the first structural part is fixed to the positioning member by a fixing bolt, and one end of the elastic member is fixed to the second structural part; the second connecting member is screwed to the adjusting member in a direction perpendicular to the plane where the adjusting member is located.

[0015] A preferred solution is that the ends of the first fitting and the second fitting are both formed with external threads; the positioning piece and the adjusting piece both include threaded holes with internal threads; the first fitting is threadedly connected to the positioning piece; and the second fitting is threadedly connected to the adjusting piece.

[0016] A preferred solution is that the adjusting member is in the form of a circular ring, and a boss in the form of a discontinuous ring extending downward is formed on the outer edge of the lower annular surface of the adjusting member.

[0017] Preferably, the elastic member is a spring.

[0018] Preferably, the positioning member and the adjusting member both include assembly holes for connection with external mechanisms.

[0019] The present invention also provides a method for using the automatic plane fine-tuning positioning device as described above, comprising the following steps:

[0020] Providing a product to be adjusted with an adjustment plane and determining a reference plane;

[0021] Fix the product to be adjusted on the adjustment piece;

[0022] The positioning member is driven by an external force to drive the adjustment member and the adjustment plane to move toward the reference plane. When the adjustment plane contacts the reference plane, the adjustment plane is driven to continue to move toward the reference plane and overcome the static friction between the first mating member and the second mating member, so that the adjustment member and the adjustment plane are displaced relative to the positioning member until the adjustment plane is completely in contact with the reference plane.

[0023] The positioning member is driven by an external force to drive the adjusted adjustment plane to move away from the reference plane. After leaving the reference plane, the adjustment plane remains relatively parallel to the reference plane.

[0024] The beneficial effects of the present invention are:

[0025] The present invention uses a positioning member, an adjusting member, and a connecting structure for connecting the positioning member and the adjusting member, and is designed based on the friction lock principle so that the automatic plane fine-tuning positioning device can automatically complete the precise adjustment of the inclination of the adjustment plane. Compared with a transmission mechanical or electric fine-tuning device, the present invention does not require manual operation and power supply to achieve the positioning of the adjustment plane after automatic fine-tuning, thereby improving the efficiency and convenience of operation. The elastic force preloading effect of the elastic member can ensure that the adjustment plane remains stable for a long time after fine-tuning. The elastic member adjustment and static friction locking improve the anti-interference ability of the device and solve the position drift problem caused by environmental disturbances (such as temperature changes) of manual spiral fine-tuning devices or piezoelectric drive fine-tuning devices. The device structure of the present invention is more simple and compact, with low manufacturing cost, high integration, and high cost performance. The positioning member, connecting structure, and adjusting member of the present invention are all independent of each other and easy to disassemble and install. If any part fails and cannot be used, only the damaged part needs to be disassembled and replaced without replacing the entire device, saving costs and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0027] Figure 1 It is a schematic diagram of the overall structure of the automatic plane fine-tuning positioning device of the present invention.

[0028] Figure 2 It is a schematic diagram of the assembly of the positioning member, the first matching member and the first connecting member of the present invention.

[0029] Figure 3It is a schematic diagram of the assembly of the adjusting member, the second matching member and the second connecting member of the present invention.

[0030] Figure 4 It is a schematic diagram of the cooperation between the positioning member and the driving mechanism of the present invention.

[0031] Figure 5 It is a schematic diagram of the cooperation between the automatic plane fine-tuning positioning device of the present invention, the driving mechanism and the adjustment plane.

[0032] Figure numerals: 1. Positioning member; 2. Second matching member; 3. Fixing bolt; 4. Adjusting member; 5. First matching member; 6. First connecting member; 61. First structural part; 62. Second structural part; 7. Second assembly hole; 8. Elastic member; 9. Second connecting member; 10. First assembly hole; 11. First threaded hole; 12. Third threaded hole; 13. Spring hanging hole; 14. Second threaded hole; 15. Fourth threaded hole; 16. Driving mechanism; 17. First mounting bolt; 18. Mounting screw; 19. Product to be adjusted, 20. Boss. DETAILED DESCRIPTION

[0033] Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that unless otherwise specifically stated, the relative arrangement of components and steps, numerical expressions and numerical values ​​set forth in these embodiments do not limit the scope of the present invention.

[0034] The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.

[0035] Techniques and equipment known to ordinary technicians in the relevant art may not be discussed in detail, but where appropriate, the techniques and equipment should be considered part of the specification.

[0036] In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not limiting. Therefore, other examples of the exemplary embodiments may have different values.

[0037] It should be noted that like reference numerals and letters refer to like items in the following figures, and therefore, once an item is defined in one figure, it need not be further discussed in subsequent figures.

[0038] In order to solve the shortcomings of the prior art, the present invention provides an automatic plane fine-tuning positioning device, combined with Figures 1 to 5Specifically, the automatic plane fine-adjustment positioning device comprises: a positioning member 1, connected to a drive mechanism 16 to provide the power required to move the automatic plane fine-adjustment positioning device; an adjustment member 4, which secures a product 19 to be adjusted, having an adjustment plane, the adjustment plane of the product 19 being a plane away from the adjustment member 4, and which is configured to align with a reference plane; and a connecting structure connecting the positioning member 1 and the adjustment member 4. This automatic plane fine-adjustment positioning device allows the adjustment plane to be aligned with the reference plane. Specifically, the tilted state of the reference plane represents the target state of the adjustment plane, and the tilted state of the adjustment plane can be selected based on actual needs.

[0039] Furthermore, the connection structure includes a first mating member 5 provided on the positioning member 1, a second mating member 2 provided on the adjusting member 4, and an elastic member 8 connected to the positioning member 1 and the adjusting member 4 at both ends; the first mating member 5 and the second mating member 2 abut against each other and form a static friction fit under the elastic force of the elastic member 8, so that the relative positions of the positioning member 1 and the adjusting member 4 are fixed; the adjusting member 4 is configured to overcome the static friction between the first mating member 5 and the second mating member 2 under the action of an external force, causing the adjusting member 4 to displace relative to the positioning member 1 to adjust the inclination of the adjustment plane, that is, when the product 19 to be adjusted with the adjustment plane is fixed to the adjustment member 4, the plane inclination of the adjustment plane is adjusted so that the adjustment plane is parallel to the reference plane. The first mating member 5 and the second mating member 2 are configured so that when the adjustment plane reaches a predetermined inclination, that is, the adjustment plane contacts and fully fits with the reference plane so that the adjustment plane is parallel to the reference plane, the relative positions of the positioning member 1, the adjusting member 4, and the adjustment plane are fixed by the static friction between the first mating member 5 and the second mating member 2. The automatic plane fine-tuning positioning device based on the friction lock principle provided by the present invention can achieve high-precision automatic fine-tuning of an object within a plane, and through the automatic friction lock mechanism, the position of the target object is stably fixed after adjustment, thereby maintaining the required precise positioning state for a long time. This device solves the problems of low integration, poor operational convenience, and excessive sensitivity to operating temperatures in existing devices, and meets the requirements for automation, stability, and efficiency in scenarios such as optical alignment and precision machining at low temperatures. The friction lock self-locking function of the present invention is achieved by generating stress through the elastic member 8, and the first mating member 5 and the second mating member 2 are tightened to generate pressure. At this time, the surfaces of the first mating member 5 and the second mating member 2 in contact generate static friction to counteract the gravity of the adjustment member 4, thereby achieving a locking function to prevent the adjustment plane from shifting after the inclination adjustment is completed.

[0040] In the above embodiment, the number of each of the first and second mating members 5 and 2 is at least three, and they correspond one to one. The first mating members 5 are evenly arranged along the circumference of the positioning member 1, and the second mating members 2 are evenly arranged along the circumference of the adjustment member 4. The number of the elastic members 8 is at least three, corresponding to the number of the first and second mating members 5 and 2. The connection structure also includes a first connecting member 6 disposed on the positioning member 1 and a second connecting member 9 disposed on the adjustment member 4. One end of the elastic member 8 is connected to the first connecting member 6, and the other end is connected to the second connecting member 9. The number of first and second mating members 5 and 2, as well as the number of elastic members 8, in the automatic plane fine-tuning positioning device of the present invention is not limited to three and can be modified based on the required accuracy and load. For example, in scenarios where the working device has a large load or requires high fine-tuning accuracy, the number of elastic members 8 can be increased, and in combination with a corresponding number of first and second mating members 5 and 2, more friction lock structures can be formed to improve load capacity and self-locking capability. If the number of elastic members 8 is increased, the external structure of the positioning member 1 and the adjustment member 4 can be modified accordingly, but this is not a limitation of the present invention.

[0041] More specifically, the first connecting member 6 includes a first structural portion 61 and a second structural portion 62 that are perpendicular to each other; the first structural portion 61 is fixed to the positioning member 1 by screwing it to the third threaded hole 12 through a fixing bolt 3, and a hanging hole 13 is formed on the second structural portion 62, and one end of the elastic member 8 is fixed to the second structural portion 62 through the hanging hole 13; the second connecting member 9 is screwed to the adjusting member 4 in a direction perpendicular to the plane where the adjusting member 4 is located, and a fourth threaded hole 15 is formed on the adjusting member 4, and the second connecting member 9 is fixed to the upper surface of the adjusting member 4 by screwing it to the fourth threaded hole 15.

[0042] Furthermore, the first mating member 5 and the second mating member 2 are both rod-shaped, with the axis of the first mating member 5 perpendicular to the axis of the second mating member 2, and the circumferential sidewalls of the first mating member 5 abutting against the circumferential sidewalls of the second mating member 2. Specifically, the first mating member 5 and the second mating member 2 can be pins. The perpendicularity of the first mating member 5 and the second mating member 2 ensures that the static friction forces between them are always coplanar, reducing the possibility of deformation and tilting and enhancing the stability of the structure.

[0043] Regarding the assembly method of the first mating member 5 and the second mating member 2, in one specific embodiment, one end of each of the first mating member 5 and the second mating member 2 is formed with an external thread; the positioning member 1 and the adjusting member 4 both include threaded holes with internal threads; the first mating member 5 is screwed onto the positioning member 1 at one end through a threaded engagement; the second mating member 2 is screwed onto the adjusting member 4 at one end through a threaded engagement. The first mating member 5 and the second mating member 2 can be quickly and conveniently installed and removed by simply twisting. Specifically, the first mating member 5 is connected to the positioning member 1 via a first threaded hole 11, and the second mating member 2 is connected to the adjusting member 4 via a second threaded hole 14.

[0044] To reduce the overall weight of the device, in one embodiment, the adjusting member 4 is annular in shape. A downwardly extending, discontinuous, annular boss 20 is formed on the outer edge of the lower annular surface of the adjusting member 4. This boss 20 abuts against the adjustment plane and ensures that the adjustment plane is parallel to the plane of the adjusting member 4. When the first mounting bolt 17 secures the positioning member 1, the bolt head of the first mounting bolt 17 has a certain thickness, and the boss 20 provides installation space for the bolt head of the first mounting bolt 17. The adjusting member 4 is specifically made of stainless steel. The annular shape of the adjusting member 4, combined with the boss 20, further reduces the weight of the adjusting member while ensuring its functionality.

[0045] In a specific embodiment, the elastic member 8 is specifically a spring, the first structural portion 61 includes two spaced-apart arms, the fixing bolt 3 is passed through the two arms, and the magnitude of the elastic force acting on the positioning member 1 and the adjusting member 4 can be quickly adjusted by adjusting the fixed position of the fixing bolt 3 between the two arms.

[0046] In one embodiment, both the positioning member 1 and the adjustment member 4 include mounting holes for connection to external mechanisms. Specifically, the drive mechanism 16 utilizes a first mounting bolt 17 that engages the first mounting hole 10 on the positioning member 1 to enable the positioning member 1 to be mounted on different drive mechanisms, improving assembly convenience. Thanks to the convenient engagement of the first mounting bolt 17 with the first mounting hole 10, the device of the present invention can be flexibly installed at any location on the driving end of the drive mechanism 16. The adjustment member 4 utilizes a second mounting hole 7 and a mounting screw 18 to connect to the adjustment plane.

[0047] The present invention also provides a method for using the automatic plane fine-tuning positioning device described above, the method comprising the following steps: providing a product 19 to be adjusted having an adjustment plane and determining a reference plane; the reference plane may be a work surface. Providing an adjustment plane and a reference plane; fixing the product 19 to be adjusted having an adjustment plane on the adjustment member 4, and ensuring that the adjustment plane is parallel to the plane on which the adjustment member 4 is located; driving the positioning member 1 by an external force to drive the adjustment member 4 and the adjustment plane toward the reference plane; when the adjustment plane contacts the reference plane, the adjustment plane is driven to continue moving toward the reference plane and overcome the static friction between the first mating member 5 and the second mating member 2, causing the adjustment member 4 and the adjustment plane to be displaced relative to the positioning member 1 until the adjustment plane is completely aligned with the reference plane; and driving the positioning member 1 by an external force to drive the adjusted adjustment plane away from the reference plane. After leaving the reference plane, the adjustment plane remains relatively parallel to the reference plane.

[0048] More specifically, the positioning member 1 is fixed on a moving platform (such as an optical displacement stage, a linear guide, etc.), and the adjustment plane is installed below the boss of the adjustment member 4; the moving platform is operated to move toward the reference plane, and when the adjustment plane contacts the reference plane, the adjustment plane fixed on the adjustment member 4 is slightly adjusted and moved on the first matching member 5 by the second matching member 2 until the adjustment plane is aligned parallel to the reference plane; the adjustment plane is moved, and at this time, the adjustment plane remains in a state relatively parallel to the reference plane, and this relative parallel state is maintained during the movement, completing the precise fine-tuning of the adjustment plane and automatically positioning. Utilizing the device provided by the present invention, by fixing a structure with an adjustment plane below the adjustment member 4 and ensuring that the adjustment plane is parallel to the plane of the adjustment member 4, the adjustment plane is driven to achieve parallel arrangement with the reference plane by contacting the reference plane, and after adjustment, the adjustment plane is self-locked by friction lock to maintain the stability of the adjustment plane, thereby providing a new adjustment method for maintaining the parallelism of two planes at micro-nano spacing.

[0049] In summary, the present invention cooperates with the positioning member, the adjusting member and the connecting structure for connecting the positioning member and the adjusting member, and is designed based on the friction lock principle so that the automatic plane fine-tuning positioning device can automatically complete the precise adjustment of the inclination of the adjustment plane. Compared with the transmission mechanical or electric fine-tuning device, the present invention does not require manual operation and power supply to achieve the positioning of the adjustment plane after automatic fine-tuning, thereby improving the use efficiency and convenience of operation. Through the elastic force preloading effect of the elastic member, it can ensure that the adjustment plane after fine-tuning remains stable for a long time. Through the adjustment of the elastic member and the locking of the static friction force, the anti-interference ability of the device is improved, and the position drift problem caused by environmental disturbances (temperature changes, etc.) caused by manual spiral fine-tuning devices or piezoelectric drive fine-tuning devices is solved. The device structure of the present invention is more simple and compact, with low manufacturing cost, high integration, and high cost performance. The positioning member, connecting structure and adjusting member of the present invention are all independent of each other and easy to disassemble and install. If any part fails and cannot be used, it is only necessary to disassemble and replace the damaged part without replacing the entire device, saving cost and improving use efficiency.

[0050] Obviously, the above embodiments of the present invention are merely examples for clearly illustrating the present invention, and are not limitations on the implementation methods of the present invention. For ordinary technicians in the relevant field, other different forms of changes or modifications can be made based on the above description. It is impossible to list all the implementation methods here. All obvious changes or modifications derived from the technical solution of the present invention are still within the scope of protection of the present invention.

Claims

1. An automatic plane fine-tuning positioning device, characterized in that: include: Positioning parts; An adjusting member for fixing a product to be adjusted having an adjusting plane; a first matching member disposed on the positioning member; A second matching member disposed on the adjusting member; and an elastic member connected at both ends to the positioning member and the adjusting member respectively; The first matching member and the second matching member abut against each other and form a static friction fit under the elastic force of the elastic member; The adjusting member is configured to overcome the static friction between the first mating member and the second mating member under the action of an external force, so that the adjusting member is displaced relative to the positioning member to adjust the inclination of the adjustment plane; The first matching member and the second matching member are configured to fix the relative positions of the positioning member and the adjusting member by static friction when the adjustment plane reaches a predetermined inclination.

2. The automatic plane fine-tuning positioning device according to claim 1, characterized in that: The number of the first matching pieces and the second matching pieces are at least three and they correspond one to one; the first matching pieces are evenly arranged along the circumference of the positioning piece, and the second matching pieces are evenly arranged along the circumference of the adjusting piece.

3. The automatic plane fine-tuning positioning device according to claim 1, characterized in that: The axis of the first matching piece is perpendicular to the axis of the second matching piece, and the peripheral side wall of the first matching piece abuts against the peripheral side wall of the second matching piece.

4. The automatic plane fine-tuning positioning device according to claim 2, characterized in that: The number of the elastic members is at least three, and the automatic plane fine-tuning positioning device further includes a first connecting member arranged on the positioning member and a second connecting member arranged on the adjusting member; one end of the elastic member is connected to the first connecting member, and the other end is connected to the second connecting member.

5. The automatic plane fine-tuning positioning device according to claim 4, characterized in that: The first connecting member includes a first structural part and a second structural part that are perpendicular to each other; the first structural part is fixed to the positioning member by a fixing bolt, and one end of the elastic member is fixed to the second structural part; the second connecting member is screwed to the adjusting member in a direction perpendicular to the plane where the adjusting member is located.

6. The automatic plane fine-tuning positioning device according to claim 1, characterized in that: The ends of the first fitting member and the second fitting member are both formed with external threads; the positioning member and the adjusting member both include threaded holes with internal threads; the first fitting member is threadedly connected to the positioning member; and the second fitting member is threadedly connected to the adjusting member.

7. The automatic plane fine-tuning positioning device according to claim 1, characterized in that: The adjusting member is in a circular ring structure, and a boss in a discontinuous ring structure extending downward is formed on the outer edge of the lower ring surface of the adjusting member.

8. The automatic plane fine-tuning positioning device according to claim 1, characterized in that: The elastic member is a spring.

9. The automatic plane fine-tuning positioning device according to claim 1, characterized in that: The positioning member and the adjusting member both include assembly holes for connecting with external mechanisms.

10. A method for using the automatic plane fine-tuning positioning device according to any one of claims 1 to 9, characterized in that: The following steps are involved: Providing a product to be adjusted with an adjustment plane and determining a reference plane; Fix the product to be adjusted on the adjustment piece; The positioning member is driven by an external force to drive the adjustment member and the adjustment plane to move toward the reference plane. When the adjustment plane contacts the reference plane, the adjustment plane is driven to continue to move toward the reference plane and overcome the static friction between the first mating member and the second mating member, so that the adjustment member and the adjustment plane are displaced relative to the positioning member until the adjustment plane is completely in contact with the reference plane. The positioning member is driven by an external force to drive the adjusted adjustment plane to move away from the reference plane. After leaving the reference plane, the adjustment plane remains relatively parallel to the reference plane.

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