Automatic plane fine adjustment positioning device and using method thereof

Abstract

The invention provides an automatic plane fine-tuning positioning device and a use method thereof. The automatic plane fine-tuning positioning device comprises a positioning piece, the adjusting piece is used for fixing a to-be-adjusted product with an adjusting plane; the first matching piece is arranged on the positioning piece; the second matching piece is arranged on the adjusting piece; two ends of the elastic piece are respectively connected with the positioning piece and the adjusting piece; the first matching piece and the second matching piece abut against each other and are in static friction fit under the action of the elastic force of the elastic piece. The adjusting piece is configured to overcome static friction force between the first matching piece and the second matching piece under the action of external force, so that the adjusting piece generates displacement relative to the positioning piece to adjust the inclination of the adjusting plane; the first matching piece and the second matching piece are configured to enable the relative positions of the positioning piece and the adjusting piece to be fixed through static friction force when the adjusting plane reaches a preset inclination degree. The problems that an existing device is low in integration level, poor in operation convenience and sensitive to temperature changes are solved.

Description

Technical Field

[0001] The present invention relates to the field of precision positioning technology, and more specifically, 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, especially in fields with high precision requirements, such as optics, electronics, mechanical manufacturing, micro-nanotechnology, etc. Accurate positioning and adjustment are the key to ensuring the accuracy of equipment operation and experimental results. As an important branch of precision positioning technology, the plane fine-tuning positioning device is widely used in various scenarios that require subtle position adjustment and positioning.

[0003] At present, there are many devices for precise position adjustment, including manual spiral fine-tuning devices, piezoelectric drive fine-tuning devices, etc. These devices mostly rely on the precise and complex structure, control system or material characteristics to achieve tiny displacement and precise positioning. However, the planar fine-tuning positioning devices of the prior art still face the following major problems in practical applications: 1. Complex operation and difficult adjustment: Many existing fine-tuning structural devices require manual operation, and the accuracy during the adjustment process is difficult to control. For example, although the manual spiral fine-tuning device can provide a relatively simple precision adjustment method, for equipment with high precision requirements, manual operation is usually not fine enough, resulting in a difficult, time-consuming and inefficient adjustment process; 2. Low integration: The design of existing fine-tuning devices is often relatively independent, lacking modular integration, and cannot well meet the collaborative work requirements in complex systems. Especially in integrated systems, the interconnection, coordination and spatial layout of multiple devices often lead to a decrease in efficiency and accuracy; 3. The device is difficult to maintain and expensive: Most fine-tuning devices rely on precise threads or special materials, and the acquisition and production costs are high. For example, piezoelectric-driven fine-tuning devices can provide nanometer-level precision, but they have a small operating range, are sensitive to temperature changes, and are difficult to maintain, which is not conducive to long-term experimental operations. 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 of 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 adjusting plane; a first matching member disposed on the positioning member; a second matching member disposed 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 are in contact with 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 matching member and the second matching 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 adjusting 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 number of 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 also 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 portion and a second structural portion that are perpendicular to each other; the first structural portion is fixed to the positioning member by a fixing bolt, and one end of the elastic member is fixed to the second structural portion; 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 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.

[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 ring 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 matching member and the second matching 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 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 cooperates with 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 use efficiency and the 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 disturbance (temperature change, etc.) of the manual spiral fine-tuning device or the piezoelectric drive fine-tuning device is solved. The device structure of the present invention is more concise and compact, the manufacturing cost is low, the integration is high, and it has a high cost performance. The positioning member, the connecting structure and the adjusting member of the present invention are all independent of each other, and are easy to disassemble and install. If any of the parts fails and cannot be used, it is only necessary to disassemble and replace the damaged parts without replacing the entire device, thereby saving costs and improving the use efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] The specific implementation modes of the present invention are further described in detail below in conjunction with 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 assembling the positioning member, the first matching member and the first connecting member of the present invention.

[0029] Figure 3It is a schematic diagram of assembling 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 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 unless otherwise specifically stated.

[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 similar 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 5As shown, the automatic plane fine-tuning positioning device specifically includes: a positioning member 1, which is used to connect with a driving mechanism 16 to provide the power required for the automatic plane fine-tuning positioning device to move its position; an adjusting member 4 for fixing a product 19 to be adjusted having an adjustment plane, wherein the adjustment plane of the product 19 to be adjusted is a plane away from the adjusting member 4, and the adjustment plane is used to correspond to the reference plane; and a connecting structure for connecting the positioning member 1 and the adjusting member 4. The automatic plane fine-tuning positioning device can be used to adjust the adjustment plane to a state parallel to the reference plane. That is, the tilt state of the reference plane is the target state of the adjustment plane, and the tilt state of the adjustment plane can be selected according to actual needs.

[0039] Furthermore, the connection structure includes a first matching piece 5 arranged on the positioning piece 1, a second matching piece 2 arranged on the adjusting piece 4, and an elastic piece 8 connected to the positioning piece 1 and the adjusting piece 4 at both ends; the first matching piece 5 and the second matching piece 2 are in contact with each other and form a static friction fit under the elastic force of the elastic piece 8 so that the relative positions of the positioning piece 1 and the adjusting piece 4 are fixed; the adjusting piece 4 is configured to overcome the static friction between the first matching piece 5 and the second matching piece 2 under the action of an external force, so that the adjusting piece 4 is displaced relative to the positioning piece 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 piece 4, the plane inclination of the adjustment plane is adjusted so that the adjustment plane is adjusted to be parallel to the reference plane. The first matching piece 5 and the second matching piece 2 are configured so that when the adjustment plane reaches a predetermined inclination, that is, the adjustment plane contacts and completely fits with the reference plane so that the adjustment plane is parallel to the reference plane, the relative positions of the positioning piece 1 and the adjusting piece 4 and the adjustment plane are fixed by the static friction between the first matching piece 5 and the second matching piece 2. The above-mentioned automatic plane fine-tuning positioning device based on the friction lock principle provided by the present invention can realize high-precision automatic fine-tuning of an object in a plane, and stabilize and fix the position of the target object after adjustment through the automatic friction lock mechanism, thereby maintaining the required precise positioning state for a long time. This device solves the problems of low integration, poor operation convenience, and excessive working temperature sensitivity of existing devices, and meets the requirements of automation, stability and efficiency in scenarios such as optical alignment and precision machining at low temperatures. The friction lock self-locking function possessed by the present invention is to generate 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 realizing the locking function to prevent the adjustment plane from shifting after the inclination adjustment is completed.

[0040] In the above embodiment, the number of the first matching pieces 5 and the second matching pieces 2 is at least three and corresponds to each other; the first matching pieces 5 are evenly arranged along the circumference of the positioning piece 1, and the second matching pieces 2 are evenly arranged along the circumference of the adjusting piece 4. The number of the elastic pieces 8 is at least three and corresponds to the number of the first matching pieces 5 and the second matching pieces 2. The connection structure also includes a first connecting piece 6 arranged on the positioning piece 1 and a second connecting piece 9 arranged on the adjusting piece 4; one end of the elastic piece 8 is connected to the first connecting piece 6, and the other end is connected to the second connecting piece 9. The number of the first matching pieces 5, the second matching pieces 2 and the elastic piece 8 of the automatic plane fine-tuning positioning device described in the present invention is not limited to three, and can be changed according to the required accuracy and load size. For example, in the scenario where the working device has a large load or a high fine-tuning accuracy, the number of elastic pieces 8 can be increased, and the corresponding number of first matching pieces 5 and second matching pieces 2 can be matched to form more friction lock structures to improve the load capacity and self-locking ability. If the number of elastic pieces 8 needs to be increased, the outer shape structure of the positioning piece 1 and the adjusting piece 4 can be changed according to the number of corresponding matching pieces, and the present invention does not limit this.

[0041] More specifically, the first connecting member 6 includes a first structural portion 61 and a second structural portion 62 which are perpendicular to each other; the first structural portion 61 is fixed to the positioning member 1 by screwing the fixing bolt 3 to the third threaded hole 12, 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, 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 to the fourth threaded hole 15.

[0042] Furthermore, the first mating piece 5 and the second mating piece 2 are both in the shape of a rod, the axis of the first mating piece 5 is perpendicular to the axis of the second mating piece 2, and the peripheral side wall of the first mating piece 5 abuts against the peripheral side wall of the second mating piece 2. Specifically, the first mating piece 5 and the second mating piece 2 can be pins. The first mating piece 5 and the second mating piece 2 are perpendicular to each other so that the static friction forces are always coplanar, which reduces the possibility of deformation and tilting and enhances the stability of the structure.

[0043] Regarding the assembly method of the first matching piece 5 and the second matching piece 2, in a specific embodiment, one end of the first matching piece 5 and the second matching piece 2 are both formed with external threads; the positioning piece 1 and the adjusting piece 4 both include threaded holes with internal threads; the first matching piece 5 is screwed to the positioning piece 1 at one end through threaded matching; the second matching piece 2 is screwed to the adjusting piece 4 at one end through threaded matching, and the first matching piece 5 and the second matching piece 2 can be installed and removed by screwing, which is convenient and quick. Specifically, the first matching piece 5 is connected to the positioning piece 1 through the first threaded hole 11, and the second matching piece 2 is connected to the adjusting piece 4 through the second threaded hole 14.

[0044] In order to reduce the overall weight of the device, in a specific embodiment, the adjustment member 4 is annular in structure, and a boss 20 extending downward in a discontinuous annular structure is formed on the outer edge of the lower annular surface of the adjustment member 4, and the boss 20 abuts against the adjustment plane and ensures that the adjustment plane is parallel to the plane of the adjustment member 4. When the first mounting bolt 17 fixes the positioning member 1, the bolt head of the first mounting bolt 17 has a certain thickness, and the boss 20 can provide installation space for the bolt head of the first mounting bolt 17. The adjustment member 4 is specifically made of stainless steel, and the annular adjustment member 4 and the boss 20 can further reduce the weight of the adjustment member while ensuring its own function.

[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 size of the elastic force exerted on the positioning member 1 and the adjusting member 4 can be quickly adjusted by adjusting the fixing position of the fixing bolt 3 between the two arms.

[0046] In one embodiment, the positioning member 1 and the adjusting member 4 both include assembly holes for connecting with external mechanisms. Specifically, the driving mechanism 16 realizes the installation of the positioning member 1 on different driving mechanisms by means of the first mounting bolt 17 in cooperation with the first assembly hole 10 on the positioning member 1, thereby improving the convenience of assembly. Thanks to the convenience of the first mounting bolt 17 in cooperation with the first assembly hole 10, the device of the present invention can be flexibly installed at any position of the driving end of the driving mechanism 16. The adjusting member 4 realizes the connection with the adjustment plane by means of the second assembly hole 7 and the mounting screw 18.

[0047] The present invention also provides a method for using the automatic plane fine-tuning positioning device as described above, the method comprising the following steps: providing a product 19 to be adjusted with 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 with an adjustment plane on the adjustment member 4, and ensuring that the adjustment plane is parallel to the plane where the adjustment member 4 is located; driving the positioning member 1 by external force to drive the adjustment member 4 and the adjustment plane to move toward the reference plane, when the adjustment plane contacts the reference plane, driving the adjustment plane to continue to move toward the reference plane and overcome the static friction between the first mating member 5 and the second mating member 2, so that the adjustment member 4 and the adjustment plane are displaced relative to the positioning member 1 until the adjustment plane is completely fitted with the reference plane; driving the positioning member 1 by 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.

[0048] More specifically, the positioning member 1 is fixed on a mobile platform (such as an optical displacement stage, a linear guide, etc.), and the adjustment plane is installed under the boss of the adjustment member 4; the mobile 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 through the second matching member 2 until the adjustment plane is aligned parallel to the reference plane; the adjustment plane is moved, and the adjustment plane is kept in a state of relative parallelism with the reference plane, and in the process of moving, this relative parallelism is kept, so that the adjustment plane is accurately fine-tuned and automatically positioned. By using the device provided by the present invention, by fixing the structure with the adjustment plane under 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 realize the parallel arrangement of the adjustment plane and the reference plane by contacting with the reference plane, and after adjustment, the friction lock is self-locked to maintain the stability of the adjustment plane, so as to provide a new adjustment method for keeping the two planes parallel under micro-nano spacing.

[0049] In summary, the present invention, through the cooperation of the positioning member, the adjusting member and the connecting structure for connecting the positioning member and the adjusting member, 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 the 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 disturbance (temperature change, etc.) of the manual spiral fine-tuning device or the piezoelectric drive fine-tuning device is solved. The device structure of the present invention is more concise and compact, the manufacturing cost is low, the integration is high, and it has a high cost performance. The positioning member, the connecting structure and the adjusting member of the present invention are all independent of each other, and are easy to disassemble and install. If any of the parts fails and cannot be used, it is only necessary to disassemble and replace the damaged parts without replacing the entire device, thereby saving costs and improving the 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 protection scope of the present invention.

Claims

1. An automatic plane fine-tuning positioning device, characterized in that: include: Positioning parts; An adjustment member for fixing a product to be adjusted having an adjustment plane; A first matching piece disposed on the positioning piece; A second matching member disposed on the adjusting member; and an elastic member having two ends respectively connected to the positioning member and the adjusting member; The first matching member and the second matching member are in contact with 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 matching member and the second matching 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 adjusting 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 number of 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 also 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 which 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 along 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 matching member and the second matching 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 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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