Ball screw driving frequency adjustable macro-micro composite flight positioning platform

Abstract

The utility model relates to the technical field of positioning platforms, in particular to a ball screw driving frequency adjustable macro-micro composite flight positioning platform. In order to solve the problems that a flexible hinge platform is driven by a linear motor and is easily interfered, so that the positioning precision is reduced, and an existing fixed-frequency flexible hinge cannot adapt to different working conditions to maintain stable and efficient operation of the platform due to manufacturing errors and working frequency changes, the following technical scheme is provided: the flexible hinge comprises a base; the movable platform is arranged on the base and comprises a movable frame, a through hole is formed in the movable frame, an installation platform is arranged in the through hole, and a plurality of sets of flexible hinge pieces are connected between the two sides of the installation platform and the movable frame; and the driving mechanism is mounted in the base. The platform can adapt to manufacturing errors and working frequency changes, it is guaranteed that the platform stably and efficiently operates under different working conditions, and the strict requirements for high precision and high stability in the precision engineering field are met.

Description

TECHNICAL FIELD

[0001] The utility model relates to positioning platform technical field especially relates to a ball screw drive frequency adjustable macro -micro compound flight positioning platform. BACKGROUND

[0002] In many precision engineering fields, such as high-precision optical instruments, semiconductor manufacturing equipment and biomedical detection devices, the positioning accuracy and dynamic performance of the motion platform have extremely strict requirements. Macro-micro compound flight positioning platform can combine the large stroke characteristics of macro-motion platform and the high-precision characteristics of micro-motion platform, and has been widely used in such scenes.

[0003] Among them, the flexible hinge platform will inevitably produce a large reaction force when realizing high-frequency reciprocating motion. In this case, the motion of the macro platform is easily disturbed by the traditional bottom linear motor driving mode, resulting in a decrease in overall positioning accuracy, which cannot meet the growing demand for high precision. When dealing with high-frequency reaction force, the electromagnetic characteristics and mechanical structure characteristics of the linear motor make it difficult to quickly and stably offset these disturbances, thereby affecting the motion accuracy and stability of the whole platform.

[0004] In addition, as a key component of the micro-motion platform, the frequency characteristics of the flexible hinge play a decisive role in the dynamic response of the platform reciprocating motion. In the actual manufacturing process, due to manufacturing errors and various factors in the working environment, the working frequency will change, and the existing fixed frequency flexible hinge cannot adapt to such changes, making it difficult for the platform to maintain stable and efficient operation state under different working conditions. In view of this, the utility model provides a ball screw drive frequency adjustable macro-micro compound flight positioning platform. UTILITY MODEL CONTENT

[0005] The utility model aims at the problem that the flexible hinge platform adopts linear motor driving and is easy to be disturbed, resulting in a decrease in positioning accuracy, and the existing fixed frequency flexible hinge cannot adapt to different working conditions due to manufacturing errors and working frequency changes, and proposes a ball screw drive frequency adjustable macro-micro compound flight positioning platform.

[0006] The utility model discloses a technical scheme: a ball screw drive frequency adjustable macro -micro composite flight positioning platform, including the base, set up in the mobile platform of base, the mobile platform includes the mobile frame, is equipped with the mounting platform in the through -hole of mobile frame, and the both sides of mounting platform are connected with a plurality of groups of flexible hinge piece between mobile frame, install the drive mechanism in the base, and the drive mechanism is used for driving mobile platform and moves, set up between the base and mobile platform's guide component, the guide component ensures that mobile platform moves stably, and the spring piece is fixedly connected to the both sides of mounting platform, and the both ends of spring piece are all provided with adjusting mechanism, and the adjusting mechanism is used for adjusting the prestress of spring piece to change the frequency of mobile platform.

[0007] Optionally, the base includes a bottom plate, the bottom plate is fixedly connected with side plates on both sides, end plates are installed at both ends of the two groups of side plates respectively, an installation plate is fixedly connected between the two groups of side plates, and the installation plate is fixedly connected with the bottom plate.

[0008] Optionally, the drive mechanism includes a servo motor installed on one side of the installation plate, the output end of the servo motor penetrates the installation plate and is fixedly connected with a threaded rod, a threaded sleeve is threadedly connected on the threaded rod, a connecting block is installed on the outer side of the threaded sleeve, and the connecting block is fixedly connected to the bottom of the mobile frame.

[0009] Optionally, the guide component includes two groups of slide rails, the two groups of slide rails are fixedly connected to the top of the two groups of side plates respectively, a plurality of groups of sliding blocks are fixedly connected on the two groups of slide rails, and the plurality of groups of sliding blocks are fixedly connected to the bottom of the mobile frame.

[0010] Optionally, the adjusting mechanism includes a fixed block slidingly connected to one end of the spring piece, the fixed block is provided in a "N" shape, a plurality of fixed bolts are penetratingly arranged on the fixed block, the fixed bolts penetrate one end of the spring piece, a sliding groove is formed in the corresponding position of the inner wall of the through hole and the fixed block, and the fixed block is slidingly connected in the sliding groove.

[0011] Optionally, the adjusting mechanism further includes an adjusting bolt, and the adjusting bolt penetrates the mobile frame and is threadedly connected with the fixed block.

[0012] Optionally, the mobile frame, the mounting platform and the flexible hinge piece are designed in an integral molding type.

[0013] Optionally, the mounting platform is used for mounting a moving part.

[0014] Optionally, the flexible hinge piece is vertically arranged with the slide rail.

[0015] Optionally, the spring piece is arranged in parallel with the flexible hinge piece.

[0016] In summary, the present application includes at least one of the following beneficial technical effects:

[0017] The utility model discloses a setting, provide solid support for whole platform for the setting, and the moving platform passes through the guiding component of the cooperation of sliding block and slide rail, ensure that the moving frame can only along the slide rail direction steady movement, greatly reduce the shaking and the deviation in the moving process, guarantee straightness, provide stable moving foundation for realizing high accuracy positioning, simultaneously, the accurate transmission of servo motor drive screw rod and threaded sleeve in drive mechanism, realize the stable and accurate long -stroke movement of moving platform,

[0018] Further, by setting spring sheet parallel with flexible hinge sheet on both sides of the installation platform, and adjusting the frequency through the adjusting mechanism, the operator only needs to rotate the adjusting bolt to move the fixed block in the sliding groove, thereby changing the prestress of the spring sheet, realizing flexible and accurate regulation and control of the frequency characteristics of the moving platform. This design enables the platform to adjust its frequency according to different working environments and working conditions, effectively improving the adaptability and working efficiency of the platform.

[0019] In summary, the utility model can adapt to manufacturing error and working frequency change, ensure stable and efficient operation of the platform under different working conditions, and meet the stringent requirements of high precision and high stability in the field of precision engineering. BRIEF DESCRIPTION OF DRAWINGS

[0020] Figure 1 is a structure diagram of a ball screw drive frequency adjustable macro-micro composite flight positioning platform.

[0021] Figure 2 is Figure 1 a cross-sectional structure diagram.

[0022] Figure 3 is Figure 1 an enlarged diagram of A in the

[0023] Figure 4 is Figure 1 an enlarged diagram of B in the

[0024] REFERENCE SIGNS:

[0025] 1, base; 11, bottom plate; 12, side plate; 13, end plate; 14, mounting plate;

[0026] 2, moving platform; 21, moving frame; 22, through hole; 23, installation platform; 24, flexible hinge sheet;

[0027] 3, drive mechanism; 31, servo motor; 32, threaded rod; 33, threaded sleeve; 34, connecting block;

[0028] 4, guiding component; 41, slide rail; 42, sliding block;

[0029] 5. spring leaf

[0030] 6. adjusting mechanism; 61. fixing block; 62. fixing bolt; 63. sliding groove; 64. adjusting bolt. DETAILED DESCRIPTION

[0031] The technical solutions of the present application will be described clearly and completely below in conjunction with the drawings. Obviously, the described embodiments are only some of the embodiments of the present application, not all the embodiments.

[0032] The components of the embodiments of the present application generally described and shown in the accompanying drawings can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed present application, but only represents selected embodiments of the present application.

[0033] Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without making creative efforts fall within the scope of protection of the present application.

[0034] In the description of the present application, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as limiting the present application. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0035] In the description of the present application, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection", "connection" should be broadly understood, for example, it can be fixedly connected, or it can be detachably connected, or integrally connected; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the communication inside two elements. For those of ordinary skill in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.

[0036] Embodiments

[0037] As Figure 1 and Figure 2The utility model provides a kind of ball screw drive frequency adjustable macro-micro composite flight positioning platform, including base 1 shown in the figure.The base 1 includes bottom plate 11, both sides of bottom plate 11 are fixedly connected with side plate 12, and the both ends of two groups of side plate 12 are respectively installed with end plate 13.Through the setting of bottom plate 11 and end plate 13, the position of two groups of end plate 13 is fixed firm, and the structure is stable, provides solid and reliable support foundation for entire positioning platform, guarantees the stability when subsequent each component installation and operation.Two groups of side plate 12 are fixedly connected with mounting plate 14 between, mounting plate 14 is fixedly connected with bottom plate 11, the position of mounting plate 14 is fixed, for driving mechanism 3 etc. Component provides stable installation position.

[0038] Further, the above positioning platform includes a moving platform 2 disposed on the base 1. The moving platform 2 includes a moving frame 21 with a through hole 22 formed therein, and an installation platform 23 disposed in the through hole 22. The installation platform 23 is used for installing a moving part and providing an installation carrier for the moving part, ensuring that the moving part can accurately perform positioning actions. A plurality of flexible hinge pieces 24 are connected between the two sides of the installation platform 23 and the moving frame 21, and the flexible hinge pieces 24 are vertically arranged with slide rails 41. The moving frame 21, the installation platform 23, and the flexible hinge pieces 24 are designed in an integral molding manner. The through hole formed in the whole plate material forms the installation platform 23 and the flexible hinge pieces 24. The integral molding design ensures the integrity and stability of the structure, reduces assembly errors, and improves the precision and reliability of the movement of the moving platform 2.

[0039] Further, the above positioning platform further includes a driving mechanism 3 installed in the base 1, which is used to drive the moving platform 2 to move. The driving mechanism 3 includes a servo motor 31 installed on one side of the mounting plate 14. The position of the servo motor 31 is fixed, providing a stable power source for the entire driving mechanism 3. The output end of the servo motor 31 penetrates the mounting plate 14 and is fixedly connected with a threaded rod 32. The servo motor 31 drives the threaded rod 32 to rotate after starting, converting the rotary motion of the servo motor 31 into the rotation of the threaded rod 32. A threaded sleeve 33 is threadedly connected to the threaded rod 32. When the threaded rod 32 rotates, it drives the threaded sleeve 33 to move along the length direction of the threaded rod 32, realizing the conversion of linear motion through threaded transmission. A connecting block 34 is installed on the outside of the threaded sleeve 33 and is fixedly connected to the bottom of the moving frame 21. When the threaded sleeve 33 moves, it drives the moving frame 21 to move through the connecting block 34, thereby realizing the precise displacement of the moving platform 2 on the base 1.

[0040] Specifically, the positioning platform comprises a guide assembly 4 arranged between the base 1 and the moving platform 2, which ensures the smooth movement of the moving platform 2. The guide assembly 4 comprises two groups of slide rails 41 fixedly connected to the top of the two groups of side plates 12, and the slide rails 41 provide stable guide tracks for the sliding blocks 42. The two groups of slide rails 41 are fixedly connected with two groups of sliding blocks 42, and the four groups of sliding blocks 42 are fixedly connected to the bottom of the moving frame 21. The limiting action of the slide rails 41 and the sliding blocks 42 makes the movement of the moving frame 21 stable, ensures the straightness and stability of the moving platform 2 during movement, and reduces shaking and deviation.

[0041] Further, referring to Figure 3 and Figure 4 , the positioning platform further comprises spring sheets 5 fixedly connected to the two sides of the mounting platform 23, which are arranged in parallel with the flexible hinge sheets 24. The two ends of the spring sheets 5 are provided with adjusting mechanisms 6 for adjusting the prestress of the spring sheets 5 to change the frequency of the moving platform 2, so as to flexibly adjust the frequency of the moving platform 2 to adapt to different working environments and working conditions. The adjusting mechanism 6 comprises a fixed block 61 slidingly connected to one end of the spring sheet 5, which is arranged in the shape of a "N" character. A plurality of fixed bolts 62 are arranged through the fixed block 61, and the fixed bolts 62 pass through one end of the spring sheet 5. The fixed block 61 is fixed to one end of the spring sheet 5 through the fixed bolts 62, which ensures the stable connection between the spring sheet 5 and the fixed block 61, and is convenient for subsequent adjustment. The inner wall of the through hole 22 is provided with a sliding groove 63 corresponding to the position of the fixed block 61, and the fixed block 61 is slidingly connected in the sliding groove 63, which provides a guide path for the sliding adjustment of the fixed block 61. The adjusting mechanism 6 further comprises an adjusting bolt 64 which passes through the moving frame 21 and is threadedly connected with the fixed block 61. The tension of the spring sheet 5 is adjusted by adjusting the tightness of the adjusting bolt 64, the prestress of the spring sheet 5 is changed, and the frequency of the moving platform 2 is changed, so as to accurately control the frequency of the moving platform 2.

[0042] In the embodiment, the motor output end drives the threaded rod 32 fixedly connected thereto to rotate, and since the threaded sleeve 33 is threadedly connected with the threaded rod 32, the rotation of the threaded rod 32 drives the threaded sleeve 33 to move along the length direction of the threaded rod 32. The connecting block 34 outside the threaded sleeve 33 is fixed with the bottom of the moving frame 21, thereby driving the moving frame 21 to move on the base 1, realizing the overall displacement of the moving platform 2 on the base 1, and providing a basis for the subsequent positioning action. In the moving process of the moving platform 2, the guiding assembly 4 plays a key role. Two groups of slide rails 41 are fixedly arranged on the top of the side plates 12, and the sliding blocks 42 are fixedly arranged on the bottom of the moving frame 21 and are matched with the slide rails 41. The limiting structure of the slide rail 41 and the sliding block 42 ensures that the moving frame 21 can only move stably along the direction of the slide rail 41, guarantees the straightness of the moving platform 2 in the moving process, reduces the shaking and deviation, makes the movement of the moving platform 2 more stable, and provides a guarantee for accurate positioning.

[0043] When it is necessary to adjust the frequency of the moving platform 2, the operator adjusts the tension of the spring sheet 5 by adjusting the adjusting bolt 64. The adjusting bolt 64 is threadedly connected with the fixed block 61 penetrating through the moving frame 21, the fixed block 61 is in the shape of a "n" character, and is fixed at one end of the spring sheet 5 through the fixed bolt 62. The rotation of the adjusting bolt 64 changes the prestress of the spring sheet 5. The spring sheet 5 is arranged in parallel with the flexible hinge sheet 24, and the change of the prestress of the spring sheet 5 affects the frequency characteristics of the moving platform 2 as a whole, realizes flexible and accurate regulation and control of the frequency of the moving platform 2, and adapts to different working environments and working conditions.

[0044] The above specific embodiments are only optional embodiments of the utility model, and based on the technical scheme of the utility model and the related inspiration of the above embodiments, the person skilled in the art can make various alternative improvements and combinations on the above specific embodiments.

Claims

1. A ball screw-driven frequency adjustable macro-micro composite flight positioning platform, characterized in that, Comprising: A base (1); A moving platform (2) disposed on the base (1), the moving platform (2) includes a moving frame (21), a through hole (22) is formed in the moving frame (21), an installation platform (23) is disposed in the through hole (22), and a plurality of flexible hinge pieces (24) are connected between both sides of the installation platform (23) and the moving frame (21); A driving mechanism (3) installed in the base (1), the driving mechanism (3) is used to drive the moving platform (2) to move; A guiding component (4) disposed between the base (1) and the moving platform (2), the guiding component (4) ensures the smooth movement of the moving platform (2); Spring pieces (5) fixedly connected to both sides of the installation platform (23), adjustment mechanisms (6) are provided at both ends of the spring pieces (5), and the adjustment mechanisms (6) are used to adjust the prestress of the spring pieces (5) to change the frequency of the moving platform (2).

2. The ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 1, characterized in that, The base (1) includes a bottom plate (11), side plates (12) are fixedly connected to both sides of the bottom plate (11), end plates (13) are respectively installed at both ends of the two side plates (12), an installation plate (14) is fixedly connected between the two side plates (12), and the installation plate (14) is fixedly connected to the bottom plate (11).

3. The ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 2, characterized in that, The driving mechanism (3) includes a servo motor (31) installed on one side of the installation plate (14), the output end of the servo motor (31) penetrates through the installation plate (14) and is fixedly connected to a threaded rod (32), a threaded sleeve (33) is threadedly connected to the threaded rod (32), a connecting block (34) is installed on the outer side of the threaded sleeve (33), and the connecting block (34) is fixedly connected to the bottom of the moving frame (21).

4. The ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 3, characterized in that, The guiding component (4) includes two slide rails (41), the two slide rails (41) are respectively fixedly connected to the tops of the two side plates (12), a plurality of sliders (42) are fixedly connected to both of the slide rails (41), and the plurality of sliders (42) are fixedly connected to the bottom of the moving frame (21).

5. The ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 4, characterized in that, The adjustment mechanism (6) includes a fixing block (61) slidably connected to one end of the spring piece (5), the fixing block (61) is arranged in a "U" shape, a plurality of fixing bolts (62) are arranged through the fixing block (61), the fixing bolts (62) penetrate through one end of the spring piece (5), and a chute (63) is opened at a position corresponding to the fixing block (61) on the inner wall of the through hole (22), and the fixing block (61) is slidably connected in the chute (63).

6. The ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 5, characterized in that, The adjustment mechanism (6) further includes an adjustment bolt (64), the adjustment bolt (64) penetrates through the moving frame (21) and is threadedly connected to the fixing block (61).

7. A ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 6, characterized in that, The moving frame (21), the installation platform (23) and the flexible hinge pieces (24) are integrally formed.

8. The ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 7, characterized in that, The installation platform (23) is used to install the moving part.

9. A ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 8, characterized in that, The flexible hinge pieces (24) are perpendicular to the slide rails (41).

10. A ball screw-driven frequency adjustable macro-micro composite flight positioning platform according to claim 9, characterized in that, The spring pieces (5) are parallel to the flexible hinge pieces (24).

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