A large stroke z-axis measuring instrument

Abstract

The utility model provides a kind of big stroke Z-axis measuring instrument, including Z-axis movement module, the Z-axis movement module includes: Z-axis fixed seat;Z-axis base plate, the back of Z-axis base plate is provided with the Z-axis guide rail of the sliding connection with Z-axis fixed seat, the front of Z-axis base plate is provided with measurement module;Z-axis drive assembly, it is set in the back of Z-axis base plate, Z-axis drive assembly with Z-axis fixed seat transmission connection, so that the Z-axis guide rail along Z-axis fixed seat vertical sliding, to drive the vertical reciprocating displacement of Z-axis base plate.The utility model can significantly reduce the height of complete machine, so that the premise of ensuring that measurement stroke and precision do not change, complete machine can smoothly pass through standard door frame, freight elevator, solve the pain point that traditional high towering measuring instrument is difficult to carry, need large vehicle or on-site disassembly, reduce transportation cost and risk.

Description

Technical Field

[0001] This utility model relates to the field of measuring equipment technology, specifically to a large-stroke Z-axis measuring instrument. Background Technology

[0002] A large-stroke Z-axis measuring instrument is a device for precise measurement of large-stroke dimensions and geometric tolerances in the vertical direction (Z-axis). Traditional large-stroke Z-axis measuring instruments typically adopt an integrated viaduct structure or a high column structure. The back plate of the Z-axis module is fixed, and the back plate is equipped with a drive mechanism and a guide rail. A slide is mounted on the guide rail, and the measuring components are mounted on the slide. The drive mechanism drives the slide and the measuring components on it to move up and down along the guide rail.

[0003] Taking a measuring instrument with a Z-axis travel of 300mm as an example, the height of its gantry frame needs to be set to at least 300mm to accommodate workpieces with a height of 300mm. The height of the Z-axis module backplate and guide rails on the gantry frame also needs to be at least 300mm. This doubles the height of the entire overhead bridge structure to 600mm. As the Z-axis travel increases, the height of the overhead bridge structure increases exponentially, resulting in excessively high overall height of the instrument. Excessive overall height of the instrument leads to limitations in handling, especially when entering elevator workshops. It becomes extremely difficult, requiring the Z-axis module to be disassembled first, then installed and debugged on-site in the user's workshop, or hoisted into the machine through a wall. This is very inconvenient for both the production and user companies. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides a large-stroke Z-axis measuring instrument that effectively reduces the overall height of the instrument while meeting the requirements for a large stroke.

[0005] To achieve the above objectives, this utility model provides a large-stroke Z-axis measuring instrument, comprising a Z-axis motion module, wherein the Z-axis motion module includes:

[0006] Z-axis mounting bracket;

[0007] Z-axis substrate, the back of the Z-axis substrate is provided with a Z-axis guide rail that is slidably connected to the Z-axis mounting base, and the front of the Z-axis substrate is provided with a measurement module;

[0008] A Z-axis drive assembly is disposed on the back side of the Z-axis substrate. The Z-axis drive assembly is connected to the Z-axis mounting base, so that the Z-axis guide rail slides vertically along the Z-axis mounting base to drive the Z-axis substrate to move vertically back and forth.

[0009] In some embodiments, the Z-axis drive assembly includes a Z-axis servo motor and a Z-axis drive screw;

[0010] The Z-axis servo motor is located on the back of the Z-axis base plate, the end of the Z-axis drive screw is connected to the output shaft of the Z-axis servo motor, and the Z-axis mounting base is screwed to the Z-axis drive screw.

[0011] In some implementations, an X-axis motion module is also included;

[0012] The output end of the X-axis motion module is connected to the Z-axis motion module to drive the Z-axis motion module to reciprocate horizontally.

[0013] In some embodiments, the X-axis motion module includes an X-axis servo motor, an X-axis drive screw, an X-axis guide rail, and an X-axis slide.

[0014] The X-axis slide is slidably connected to the X-axis guide rail, the end of the X-axis drive screw is connected to the output shaft of the X-axis servo motor, and the X-axis slide is screwed to the X-axis drive screw;

[0015] The Z-axis fixed seat is connected to the X-axis slide.

[0016] In some implementations, a Y-axis motion module is also included;

[0017] The output end of the Y-axis motion module is connected to the X-axis motion module to drive the X-axis motion module to reciprocate along the horizontal longitudinal direction.

[0018] In some embodiments, the Y-axis motion module includes a Y-axis servo motor, a Y-axis drive screw, a Y-axis guide rail, and a Y-axis slide.

[0019] The Y-axis slide is slidably connected to the Y-axis guide rail, the end of the Y-axis drive screw is connected to the output shaft of the Y-axis servo motor, and the Y-axis slide is screwed to the Y-axis drive screw;

[0020] The X-axis motion module is connected to the Y-axis slide.

[0021] In some implementations, a portal frame is also included;

[0022] The bottom of the portal frame is mounted on the Y-axis slide, and the X-axis motion module is mounted on the top of the portal frame.

[0023] In some implementations, the measurement module includes an image acquisition module.

[0024] In some embodiments, the image acquisition module includes a lens, a light source disposed at the objective end of the lens, and a camera disposed at the eyepiece end of the lens.

[0025] In some embodiments, the measurement module further includes a laser projection module.

[0026] Compared with the prior art, the advantages of this utility model are as follows:

[0027] This utility model of a large-stroke Z-axis measuring instrument changes the traditional movement mode of the Z-axis motion module. By keeping the Z-axis fixed seat stationary and moving the Z-axis guide rail, the Z-axis motion module and its measuring module can be raised and lowered as a whole. The entire Z-axis can be lowered to a height similar to that of a gantry bracket, thereby significantly reducing the overall height of the machine. As a result, while ensuring that the measurement stroke and accuracy remain unchanged, the whole machine can pass smoothly through standard door frames and freight elevators. This solves the pain points of traditional height measuring instruments, such as difficulty in transportation and the need for large vehicles or on-site disassembly, thus reducing transportation costs and risks. Attached Figure Description

[0028] The accompanying drawings, which form part of this application, are used to provide a further understanding of the present invention. The illustrative embodiments of the present invention and their descriptions are used to explain the present invention and do not constitute an improper limitation of the present invention.

[0029] Figure 1 This is a schematic diagram of the overall structure of the large-stroke Z-axis measuring instrument according to an embodiment of this application. Figure 1 ;

[0030] Figure 2 This is a schematic diagram of the overall structure of the large-stroke Z-axis measuring instrument according to an embodiment of this application. Figure 2 ;

[0031] Figure 3 This is a schematic diagram of the structure of the Y-axis motion module according to an embodiment of this application. Figure 1 ;

[0032] Figure 4 This is a schematic diagram of the structure of the X-axis motion module and the Z-axis motion module in an embodiment of this application. Figure 1 ;

[0033] Figure 5 This is a schematic diagram of the structure of the X-axis motion module and the Z-axis motion module in an embodiment of this application. Figure 2 ;

[0034] Figure 6 This is a schematic diagram of the back structure of the Z-axis motion module according to an embodiment of this application;

[0035] Figure 7 This is a schematic diagram of the image acquisition module according to an embodiment of this application;

[0036] Explanation of reference numerals in the attached figures:

[0037] 1-Z-axis motion module; 2-X-axis motion module; 3-Y-axis motion module; 4-Gantry bracket; 5-Machine base; 6-Measurement module;

[0038] 11 - Z-axis mounting base; 12 - Z-axis base plate; 13 - Z-axis guide rail; 14 - Z-axis servo motor; 15 - Z-axis drive screw;

[0039] 21 - X-axis servo motor; 22 - X-axis drive screw; 23 - X-axis guide rail; 24 - X-axis slide;

[0040] 31-Y-axis servo motor; 32-Y-axis drive screw; 33-Y-axis guide rail; 34-Y-axis slide;

[0041] 61-Lens; 62-Light source; 63-Camera. Detailed Implementation

[0042] Preferred embodiments of the present invention will now be described in more detail with reference to the accompanying drawings. While preferred embodiments of the present invention are shown in the drawings, it should be understood that the present invention may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that the present invention will be thorough and complete, and will fully convey the scope of the present invention to those skilled in the art.

[0043] The terminology used in this invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. The singular forms “a,” “the,” and “the” used in this invention and the appended claims are also intended to include the plural forms unless the context clearly indicates otherwise. It should also be understood that the term “and / or” as used herein refers to and includes any or all possible combinations of one or more of the associated listed items.

[0044] It should be understood that although the terms "first," "second," "third," etc., may be used in this invention to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this invention, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, features defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In addition, in the description of this invention, "a plurality of" means two or more, unless otherwise explicitly specified.

[0045] In one embodiment of this utility model, such as Figure 1-7 As shown, a large-stroke Z-axis measuring instrument is provided, including a Z-axis motion module 1, an X-axis motion module 2, a Y-axis motion module 3, a gantry bracket 4, a machine base 5, and a measuring module 6.

[0046] Among them, the Y-axis motion module 3 is set on the machine base 5, the gantry bracket 4 is set on the Y-axis motion module 3, the X-axis motion module 2 is set on the gantry bracket 4, the Z-axis motion module 1 is set on the X-axis motion module 2, and the measurement module 6 is set on the Z-axis motion module 1.

[0047] The Y-axis motion module 3 is used to drive the portal frame 4 to reciprocate horizontally, thereby driving the X-axis motion module 2, Z-axis motion module 1 and measurement module 6 on it to reciprocate horizontally; the X-axis motion module 2 is used to drive the Z-axis motion module 1 to reciprocate horizontally, thereby driving the measurement module 6 on it to reciprocate horizontally; the Z-axis motion module 1 is used to drive itself and the measurement module 6 to reciprocate vertically, thereby realizing the displacement of the measurement module 6 in the XYZ three-dimensional coordinate system.

[0048] See some of the public information. Figure 3 The Y-axis motion module 3 includes a Y-axis servo motor 31, a Y-axis drive screw 32, a Y-axis guide rail 33, and a Y-axis slide 34.

[0049] Among them, there are two Y-axis guide rails 33, which are longitudinally spaced on the machine base 5. The Y-axis servo motor 31 is also set on the machine base 5 and located between the two Y-axis guide rails 33. The Y-axis slide 34 is slidably connected to the two Y-axis guide rails 33. The end of the Y-axis drive screw 32 is connected to the output shaft of the Y-axis servo motor 31. The middle part of the Y-axis slide 34 is provided with a screw hole and screwed to the Y-axis drive screw 32. The bottom of the gantry bracket 4 is installed on the Y-axis slide 34.

[0050] Y-axis servo motor 31 drives Y-axis drive screw 32 to rotate, driving Y-axis slide 34 to move horizontally and longitudinally along Y-axis guide rail 33, thereby driving portal frame 4 and its X-axis motion module 2, Z-axis motion module 1 and measurement module 6 to move horizontally and longitudinally.

[0051] See Figures 4 to 6 The X-axis motion module 2 includes an X-axis servo motor 21, an X-axis drive screw 22, an X-axis guide rail 23, and an X-axis slide 24.

[0052] Among them, there are two X-axis guide rails 23, which are horizontally spaced on the portal bracket 4. The X-axis servo motor 21 is mounted on the portal bracket 4 and located between the two X-axis guide rails 23. The X-axis slide 24 is slidably connected to the two X-axis guide rails 23. The end of the X-axis drive screw 22 is connected to the output shaft of the X-axis servo motor 21. The middle part of the X-axis slide 24 is provided with a screw hole, which is screwed to the X-axis drive screw 22.

[0053] Z-axis motion module 1 includes Z-axis mounting base 11, Z-axis base plate 12, Z-axis guide rail 13 and Z-axis drive assembly.

[0054] The Z-axis mounting base 11 is fixed on the X-axis slide block 24, and vertically spaced grooves are provided on it. There are two Z-axis guide rails 13, which are vertically spaced on the back of the Z-axis base plate 12. The two Z-axis guide rails 13 are slidably connected with the grooves of the Z-axis mounting base 11. The Z-axis drive assembly specifically includes a Z-axis servo motor 14 and a Z-axis drive screw 15. The Z-axis servo motor 14 is located on the back of the Z-axis base plate 12. The end of the Z-axis drive screw 15 is connected to the output shaft of the Z-axis servo motor 14. The Z-axis mounting base 11 has a screw hole in the middle, which is screwed to the Z-axis drive screw 15.

[0055] The X-axis servo motor 21 drives the X-axis drive screw 22 to rotate, which in turn drives the X-axis slide 24 to move horizontally back and forth along the X-axis guide rail 23. Through the Z-axis fixed seat 11, the entire Z-axis motion module 1 and the measurement module 6 move horizontally back and forth.

[0056] Since the Z-axis fixed seat 11 is fixed on the X-axis slide 24 and cannot move up or down, when the Z-axis servo motor 14 drives the Z-axis drive screw 15 to rotate, it will drive the Z-axis guide rail 13 to move up and down, thereby causing the Z-axis base plate 12 and its measuring module 6 to move vertically back and forth. That is, the Z-axis motion module 1 and the measuring module 6 move vertically back and forth as a whole. Figure 2 As shown.

[0057] As can be seen, the large-stroke Z-axis measuring instrument in this example changes the traditional Z-axis movement method. By keeping the Z-axis fixed seat 11 stationary and moving the Z-axis guide rail 13, the Z-axis base plate 12 and its Z-axis drive components and measurement module 6 can be raised and lowered as a whole. The entire Z-axis can be lowered to a height similar to that of the gantry bracket 4, thereby significantly reducing the overall height of the machine. As a result, while ensuring that the measurement stroke and accuracy remain unchanged, the whole machine can pass smoothly through standard door frames and freight elevators. This solves the pain points of traditional height measuring instruments, such as difficulty in transportation and the need for large vehicles or on-site disassembly, and reduces transportation costs and risks.

[0058] It should be noted that the Z-axis drive component of the Z-axis motion module 1 can also be a compound telescopic cylinder or other linear drive mechanism with a certain stroke, as long as it can achieve large stroke lifting drive.

[0059] In some disclosures, the measurement module 6 may be an image acquisition module and / or a laser projection module, see [link / reference]. Figure 7 The measurement module 6 is an image acquisition module, which includes a lens 61, a light source 62 set at the objective end of the lens 61, and a camera 63 set at the eyepiece end of the lens 61.

[0060] Among them, lens 61 can be a zoom lens or a telecentric lens, and the appropriate imaging method can be flexibly selected according to the different sizes of the test objects. Light source 62 can provide a stable and uniform lighting environment for the surface of the test object, effectively improving image contrast and clarity, thereby enhancing the accuracy of size detection. Camera 63 can be a CCD industrial camera.

[0061] Unless otherwise specifically stated, the relative arrangement, numerical expressions, and values ​​of the components and steps described in these embodiments do not limit the scope of this application. It should also be understood that, for ease of description, the dimensions of the various parts shown in the drawings are not drawn to actual scale. Techniques, methods, and devices known to those skilled in the art may not be discussed in detail, but where appropriate, such techniques, methods, and devices should be considered part of the specification. In all examples shown and discussed herein, any specific values ​​should be interpreted as merely exemplary and not as limitations. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar reference numerals and letters in the following drawings denote similar items; therefore, once an item is defined in one drawing, it need not be further discussed in subsequent drawings. In the description of this application, it should be understood that the orientation or positional relationship indicated by directional terms such as "front, back, up, down, left, right", "horizontal, vertical, horizontal" and "top, bottom" is usually based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this application and simplifying the description. Unless otherwise stated, these directional terms do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on the scope of protection of this application; the directional terms "inner" and "outer" refer to the inner and outer contours relative to the outline of each component itself.

[0062] For ease of description, spatial relative terms such as "above," "on top of," "on the upper surface of," "above," etc., are used herein to describe the spatial positional relationship of a device or feature as shown in the figures to other devices or features. It should be understood that spatial relative terms are intended to encompass different orientations in use or operation beyond the orientation of the device as described in the figures. For example, if the device in the figures were inverted, a device described as "above" or "on top of" other devices or structures would subsequently be positioned as "below" or "under" other devices or structures. Thus, the exemplary term "above" can include both "above" and "below." The device may also be positioned in other different ways (rotated 90 degrees or in other orientations), and the spatial relative descriptions used herein will be interpreted accordingly.

[0063] Furthermore, it should be noted that the use of terms such as "first" and "second" to define components is merely for the purpose of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be construed as limiting the scope of protection of this application.

[0064] The above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. A large-stroke Z-axis measuring instrument, comprising a Z-axis motion module (1), characterized in that, The Z-axis motion module (1) includes: Z-axis mounting bracket (11); Z-axis substrate (12), the back of the Z-axis substrate (12) is provided with a Z-axis guide rail (13) that is slidably connected to the Z-axis fixing seat (11), and the front of the Z-axis substrate (12) is provided with a measurement module (6). The Z-axis drive assembly is disposed on the back side of the Z-axis base plate (12). The Z-axis drive assembly is connected to the Z-axis mounting base (11) for transmission, so that the Z-axis guide rail (13) slides vertically along the Z-axis mounting base (11) to drive the Z-axis base plate (12) to move vertically back and forth.

2. The large-stroke Z-axis measuring instrument according to claim 1, characterized in that, The Z-axis drive assembly includes a Z-axis servo motor (14) and a Z-axis drive screw (15); The Z-axis servo motor (14) is disposed on the back side of the Z-axis base plate (12), the end of the Z-axis drive screw (15) is connected to the output shaft of the Z-axis servo motor (14), and the Z-axis mounting base (11) is screwed to the Z-axis drive screw (15).

3. The large-stroke Z-axis measuring instrument according to claim 1, characterized in that, It also includes an X-axis motion module (2); The output end of the X-axis motion module (2) is connected to the Z-axis motion module (1) to drive the Z-axis motion module (1) to move back and forth horizontally.

4. The large-stroke Z-axis measuring instrument according to claim 3, characterized in that, The X-axis motion module (2) includes an X-axis servo motor (21), an X-axis drive screw (22), an X-axis guide rail (23), and an X-axis slide (24); The X-axis slide (24) is slidably connected to the X-axis guide rail (23), the end of the X-axis drive screw (22) is connected to the output shaft of the X-axis servo motor (21), and the X-axis slide (24) is screwed to the X-axis drive screw (22); The Z-axis fixed seat (11) is connected to the X-axis slide (24).

5. The large-stroke Z-axis measuring instrument according to claim 3, characterized in that, It also includes a Y-axis motion module (3); The output end of the Y-axis motion module (3) is connected to the X-axis motion module (2) to drive the X-axis motion module (2) to reciprocate along the horizontal longitudinal direction.

6. The large-stroke Z-axis measuring instrument according to claim 5, characterized in that, The Y-axis motion module (3) includes a Y-axis servo motor (31), a Y-axis drive screw (32), a Y-axis guide rail (33), and a Y-axis slide (34); The Y-axis slide (34) is slidably connected to the Y-axis guide rail (33), the end of the Y-axis drive screw (32) is connected to the output shaft of the Y-axis servo motor (31), and the Y-axis slide (34) is screwed to the Y-axis drive screw (32); The X-axis motion module (2) is connected to the Y-axis slide (34).

7. The large-stroke Z-axis measuring instrument according to claim 6, characterized in that, It also includes a gantry bracket (4); The bottom of the portal frame (4) is mounted on the Y-axis slide (34), and the X-axis motion module (2) is mounted on the top of the portal frame (4).

8. The large-stroke Z-axis measuring instrument according to claim 1, characterized in that, The measurement module (6) includes an image acquisition module.

9. The large-stroke Z-axis measuring instrument according to claim 8, characterized in that, The image acquisition module includes a lens (61), a light source (62) disposed at the objective end of the lens (61), and a camera (63) disposed at the eyepiece end of the lens (61).

10. The large-stroke Z-axis measuring instrument according to claim 8, characterized in that, The measurement module (6) also includes a laser projection module.

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