High-precision jacking mechanism

Abstract

The utility model relates to a high-precision jacking mechanism which sequentially comprises a bottom plate, a jacking assembly and a carrier plate from bottom to top. The jacking assembly comprises a guide base, a direct drive motor and a lead screw transmission assembly, the driving end of the top of the direct drive motor drives the carrier plate above through the lead screw transmission assembly to move in the vertical direction, and base plates are installed on the left side and the right side of the bottom of the carrier plate correspondingly. The substrate is connected with the guide base on the inner side through the guide rail assembly distributed in the vertical direction, and at least one sensor assembly and one grating assembly are further installed between the substrate and the guide base. According to the jacking mechanism, the direct-drive motor is mainly used for being matched with lead screw transmission, a high-precision grating ruler system and the like, the jacking mechanism has the advantages of being high in precision and stability, and the overall precision of laser machining can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of mechanical motion structures, in particular to a high-precision jacking mechanism. Background Technique

[0002] With the progress of society and the development of technology, the requirements for products in all walks of life are getting higher and higher, and higher precision requirements are also put forward for the supporting production equipment.

[0003] At present, for the field of high-precision laser processing, such as high-precision laser cladding processing, high-precision laser cutting processing, etc., there are extremely strict requirements for the laser focusing performance and the focusing stability during the processing. The precise control of the jacking shaft can ensure the accuracy and stability of laser focusing, and avoid excessive melting of materials or incomplete cutting.

[0004] To sum up, the problems existing in the prior art are as follows:

[0005] The jacking mechanisms in the prior art usually use a servo motor to drive a roller screw in combination with a linear guide rail, and there are problems such as low positioning accuracy and poor stability, which are difficult to meet the requirements of high-precision operations.

[0006] In view of the above defects, the inventor actively conducts research and innovation in order to create a high-precision jacking mechanism, making it more valuable in industry. Content of the Utility Model

[0007] In order to solve any of the above technical problems, the purpose of the utility model is to provide a high-precision jacking mechanism.

[0008] To achieve the above purpose, the utility model adopts the following technical solutions:

[0009] A high-precision jacking mechanism, which successively includes a bottom plate, a jacking assembly and a carrier plate from bottom to top;

[0010] The jacking assembly includes a guiding base, a direct drive motor and a screw drive assembly. The guiding base is installed on the bottom plate. A jacking through hole is opened inside the guiding base. A direct drive motor is installed on the bottom plate inside the jacking through hole. The driving end at the top of the direct drive motor drives the upper carrier plate to move in the vertical direction through the screw drive assembly. Substrates are installed on both the left and right sides at the bottom of the carrier plate;

[0011] The substrate is connected to the inner guiding base through a rail assembly distributed along the vertical direction, and at least one sensor assembly and a grating assembly are also installed between the substrate and the guiding base.

[0012] As a further improvement of the present utility model, the lead screw drive assembly includes a lead screw connecting plate, a lead screw adapter plate, a lead screw nut, and a lead screw. The lead screw nut is installed on the drive end at the top of the direct drive motor through the lead screw adapter plate. The bottom of the lead screw is connected to the lead screw nut below, and the top of the lead screw is installed together with the lead screw connecting plate above. The lead screw connecting plate is installed together with the carrier plate.

[0013] As a further improvement of the present utility model, a lead screw locking groove is provided on one side of the lead screw connecting plate, and a carrier plate locking groove adapted to the above-mentioned lead screw locking groove is provided on one side of the carrier plate.

[0014] As a further improvement of the present utility model, side sealing plates are installed on both the front and rear sides between the two base plates. A second avoidance groove is provided on the guiding base outside the wire outlet end of the direct drive motor, and a first avoidance groove is provided on the side sealing plate outside the second avoidance groove.

[0015] As a further improvement of the present utility model, the guide rail assembly includes a guide rail and a slider. Sliders are installed on both the front and rear sides inside the base plate, and a guide rail adapted to the above-mentioned slider is installed on the guiding base inside the slider. The slider moves along the vertical direction on the guide rail.

[0016] As a further improvement of the present utility model, the sensor assembly includes an induction sheet, an upper limit photoelectric sensor, and a lower limit photoelectric sensor. The induction sheet is installed on the base plate, and the upper limit photoelectric sensor and the lower limit photoelectric sensor are installed on the guiding base in sequence from top to bottom.

[0017] As a further improvement of the present utility model, the grating assembly includes a grating scale and a reading head. The grating scale is installed on the guiding base along the vertical direction, and the reading head is installed on the base plate.

[0018] By means of the above solution, the present utility model has at least the following advantages:

[0019] The present utility model mainly utilizes a direct drive motor in cooperation with a lead screw drive and a high-precision grating scale system, etc. The lifting mechanism has the advantages of high precision and high stability, and can improve the overall precision of laser processing.

[0020] The present utility model uses a direct drive motor in combination with a high-precision grating system. The positioning accuracy can be guaranteed within ±0.5μm, and the running straightness can be guaranteed within 1μm. In laser processing, it can significantly improve the laser focusing effect and improve the overall processing precision.

[0021] The above description is only an overview of the technical solution of the present utility model. In order to be able to understand the technical means of the present utility model more clearly and implement it according to the content of the specification, the following takes the preferred embodiment of the present utility model and describes it in detail in conjunction with the accompanying drawings as follows. Description of the Drawings

[0022] To more clearly illustrate the technical solutions of the embodiments of the present utility model, the following will briefly introduce the attached drawings required for use in the embodiments. It should be understood that the following attached drawings only show some embodiments of the present utility model, and therefore should not be regarded as a limitation of the scope. For those of ordinary skill in the art, without creative efforts, other relevant attached drawings can also be obtained based on these attached drawings.

[0023] Figure 1 is a schematic structural diagram of a high-precision lifting mechanism of the present utility model;

[0024] Figure 2 is Figure 1 a schematic structural diagram after removing one of the substrate and the side sealing plate.

[0025] Among them, the meanings of the reference numerals in the drawings are as follows.

[0026] Base plate 1, substrate 2, carrier plate 3, screw rod connecting plate 4, screw rod locking groove 5, carrier plate locking groove 6, side sealing plate 7, first avoidance groove 8, guiding base 9, lifting through hole 10, second avoidance groove 11, direct drive motor 12, screw rod adapter plate 13, screw rod nut 14, screw rod 15, guide rail assembly 16, sensor assembly 17, grating assembly 18. Specific embodiments

[0027] The following will further describe in detail the specific embodiments of the present utility model in conjunction with the attached drawings and embodiments. The following embodiments are used to illustrate the present utility model, but do not limit the scope of the present utility model.

[0028] In order to enable those skilled in the art to better understand the solutions of the present utility model, the following will clearly and completely describe the technical solutions in the embodiments of the present utility model in conjunction with the attached drawings in the embodiments of the present utility model. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all of the embodiments. Usually, the components of the embodiments of the present utility model described and shown in the attached drawings here can be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present utility model provided in the attached drawings is not intended to limit the scope of the present utility model to be protected, but only represents the selected embodiments of the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts belong to the scope of protection of the present utility model.

[0029] As Figures 1 to 2 shown, a high-precision lifting mechanism successively includes a base plate 1, a lifting assembly, and a carrier plate 3 from bottom to top;

[0030] The jacking assembly includes a guiding base 9, a direct drive motor 12 and a lead screw transmission assembly. The guiding base 9 is installed on the bottom plate 1. A jacking through hole 10 is formed inside the guiding base 9. The direct drive motor 12 is installed on the bottom plate 1 inside the jacking through hole 10. The driving end at the top of the direct drive motor 12 drives the upper carrier plate 3 to move in the vertical direction through the lead screw transmission assembly. Substrate plates 2 are installed on both the left and right sides at the bottom of the carrier plate 3.

[0031] A lead screw locking groove 5 is formed on one side of the lead screw connection plate 4, and a carrier plate locking groove 6 adapted to the above-mentioned lead screw locking groove 5 is formed on one side of the carrier plate 3.

[0032] Side sealing plates 7 are installed on both the front and rear sides between the two substrate plates 2. A second avoidance groove 11 is formed on the guiding base 9 outside the wire outlet end of the direct drive motor 12, and a first avoidance groove 8 is formed on the side sealing plate 7 outside the second avoidance groove 11.

[0033] The substrate plate 2 is connected to the inner guiding base 9 through a guide rail assembly 16 distributed along the vertical direction. The guide rail assembly 16 includes a guide rail and a slider. Sliders are installed on both the front and rear sides inside the substrate plate 2, and a guide rail adapted to the above-mentioned slider is installed on the guiding base 9 inside the slider. The slider moves along the vertical direction on the guide rail.

[0034] The lead screw transmission assembly includes a lead screw connection plate 4, a lead screw adapter plate 13, a lead screw nut 14 and a lead screw 15. The lead screw nut 14 is installed on the driving end at the top of the direct drive motor 12 through the lead screw adapter plate 13. The bottom of the lead screw 15 is connected to the lower lead screw nut 14, and the top of the lead screw 15 is installed together with the upper lead screw connection plate 4. The lead screw connection plate 4 is installed together with the carrier plate 3.

[0035] At least one sensor assembly 17 and a grating assembly 18 are also installed between the substrate plate 2 and the guiding base 9.

[0036] The sensor assembly 17 includes an induction sheet, an upper limit photoelectric sensor and a lower limit photoelectric sensor. The induction sheet is installed on the substrate plate 2, and the upper limit photoelectric sensor and the lower limit photoelectric sensor are installed on the guiding base 9 in sequence from top to bottom.

[0037] The grating assembly 18 includes a grating scale and a reading head. The grating scale is installed on the guiding base 9 along the vertical direction, and the reading head is installed on the substrate plate 2.

[0038] A brief description of the working principle of the present utility model:

[0039] The guiding base 9 is installed on the bottom plate 1. The direct drive motor 12 is installed on the bottom plate 1 and placed in the lifting through hole 10 of the guiding base 9. The lead screw adapter plate 13 is installed on the direct drive motor 12. The lead screw 15 is installed on the lead screw adapter plate 13. The lead screw connecting plate 4 is fixed to the lead screw 15 and the carrier plate 3. The four groups of guide rail assemblies 16 include the guide rails on the fixed side and the sliders on the base side. The guide rails on the fixed side are installed at the four corners of the guiding base 9, and the sliders on the base side are installed on both sides of the base plate 2. The carrier plate 3 is installed above the base plate 2. The grating scale and the reading head of the high-precision grating assembly 18 are respectively fixed to the guiding base 9 and the base plate 2. The upper limit photoelectric sensor and the lower limit photoelectric sensor are installed on the guiding base 9 from top to bottom. The induction sheet is installed on the base plate 2. The side sealing plate 7 is fixed to the base plate 2.

[0040] In the high-precision lifting mechanism of the present utility model, the direct drive motor 12 drives the lead screw adapter plate 13 and the lead screw nut 14 to perform rotational motion. The lead screw nut 14 drives the lead screw 15 to perform vertical motion. The lead screw connecting plate 4, the carrier plate 3, and the base plate 2 are fixed by screws to form an integral body and simultaneously perform vertical motion along with the lead screw 15. The high-precision grating assembly 18 performs motion accuracy detection and performs accuracy feedback through the control system. When the carrier plate 3 moves to the limit position, the upper limit photoelectric sensor and the lower limit photoelectric sensor are respectively triggered by the induction sheet.

[0041] The present utility model mainly utilizes a direct drive motor in cooperation with a lead screw drive and a high-precision grating scale system, etc. The lifting mechanism has the advantages of high precision and high stability, and can improve the overall precision of laser processing.

[0042] The present utility model utilizes a direct drive motor in combination with a high-precision grating system. The positioning accuracy can be guaranteed within ±0.5 μm, and the running straightness can be guaranteed within 1 μm. In laser processing, it can significantly improve the laser focusing effect and improve the overall processing precision.

[0043] In the description of the present utility model, it should be understood that the terms "center", "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc. indicate the orientation or position relationship based on the orientation or position relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first", "second", etc. may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise specified, the meaning of "a plurality" is two or more.

[0044] In the description of the present utility model, it should be noted that unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood through specific circumstances.

[0045] The above are only the preferred embodiments of the present utility model and are not used to limit the present utility model. It should be pointed out that for those of ordinary skill in the technical field, without departing from the technical principle of the present utility model, several improvements and modifications can still be made, and these improvements and modifications should also be regarded as the protection scope of the present utility model.

Claims

1. A high-precision lifting mechanism, comprising, from bottom to top, a base plate (1), a lifting assembly and a carrier plate (3); characterized in that: The lifting assembly comprises a guide base (9), a direct drive motor (12) and a screw transmission assembly, wherein the guide base (9) is mounted on a base plate (1), a lifting through hole (10) is provided on the inner side of the guide base (9), a direct drive motor (12) is mounted on the base plate (1) in the lifting through hole (10), a driving end at the top of the direct drive motor (12) drives the upper carrier plate (3) to move in a vertical direction through the screw transmission assembly, and base plates (2) are mounted on both left and right sides of the bottom of the carrier plate (3); The base plate (2) is connected to an inner guide base (9) via a guide rail assembly (16) distributed along a vertical direction, and at least one sensor assembly (17) and a grating assembly (18) are installed between the base plate (2) and the guide base (9).

2. A high-precision lifting mechanism as claimed in claim 1, characterized in that: The screw transmission assembly comprises a screw connecting plate (4), a screw adapter plate (13), a screw nut (14) and a screw (15); the screw nut (14) is mounted on the driving end at the top of the direct drive motor (12) through the screw adapter plate (13); the bottom of the screw (15) is connected to the screw nut (14) below; the top of the screw (15) is mounted together with the screw connecting plate (4) above; and the screw connecting plate (4) is mounted together with the carrier plate (3).

3. A high-precision lifting mechanism as claimed in claim 2, characterized in that: A screw rod locking groove (5) is provided on one side of the screw rod connecting plate (4), and a carrier plate locking groove (6) matching the screw rod locking groove (5) is provided on one side of the carrier plate (3).

4. A high-precision lifting mechanism as claimed in claim 1, characterized in that: Side sealing plates (7) are installed on both the front and rear sides between the two base plates (2), a second avoidance groove (11) is provided on the guide base (9) outside the outlet end of the direct drive motor (12), and a first avoidance groove (8) is provided on the side sealing plate (7) outside the second avoidance groove (11).

5. A high-precision lifting mechanism as claimed in claim 1, characterized in that: The guide rail assembly (16) comprises a guide rail and a slider. The sliders are installed on both the front and rear sides of the inner side of the base plate (2). A guide rail matching the slider is installed on the guide base (9) inside the slider. The slider moves on the guide rail in the vertical direction.

6. A high-precision lifting mechanism as claimed in claim 1, characterized in that: The sensor assembly (17) comprises a sensing sheet, an upper limit photoelectric sensor and a lower limit photoelectric sensor, the sensing sheet is mounted on a substrate (2), and the upper limit photoelectric sensor and the lower limit photoelectric sensor are sequentially mounted on a guide base (9) from top to bottom.

7. A high-precision lifting mechanism as claimed in claim 1, characterized in that: The grating assembly (18) comprises a grating ruler and a reading head, wherein the grating ruler is mounted on a guide base (9) along a vertical direction, and the reading head is mounted on a base plate (2).

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