Measuring device for improving motion precision of parallel mechanism

Abstract

The utility model discloses a measuring device for improving the motion precision of a parallel mechanism. The measuring device comprises a bottom platform, a stand column, a movable platform and a top platform. The stand columns are fixedly arranged between the bottom platform and the top platform. The movable platform is arranged in a space formed by the bottom platform, the stand columns and the top platform; a linear motion module is arranged on the stand column; the linear motion module is connected with a supporting frame, one end of the supporting frame is connected with the linear motion module, and the other end of the supporting frame is connected with the movable platform. Three hooke joints are evenly arranged on the outer side wall of the movable platform, and the bottom of the supporting frame is connected with the movable platform through the hooke joints. Three spherical hinges are uniformly arranged on the movable platform, and measuring rods are connected to the spherical hinges; three hooke joints are uniformly arranged on the top platform; and the upper part of the measuring rod is connected with the top platform through the hooke joints. Through the design, the linear motion module can drive the bottom platform to move, the bottom platform can drive the measuring rod to move when moving, and then measurement of Cartesian coordinate points of the trigger type measuring head is achieved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the field of measuring device, concretely relates to a kind of measuring device of improving parallel mechanism motion accuracy. BACKGROUND

[0002] Under the driving of the big environment of intelligent manufacturing, more and more parts production enterprises are equipped with unmanned or few people parts processing production line, such as new energy automobile, traditional energy automobile enterprise and so on mass parts production enterprise, in order to control product quality, some key parts require full-size detection, and most enterprises currently adopt online special equipment, traditional three-coordinate detection and standard optical detection equipment to detect parts, and special detection equipment needs to be redesigned and manufactured after part modification, and the detection cost is higher;Traditional three-coordinate cannot be placed on the production line in harsh environment due to the air floating guide rail in its structure, and can only be used for sampling inspection of parts, and cannot meet the production detection demand;The precision of optical detection equipment cannot be guaranteed when detecting larger parts, and only relatively simple parts can be detected.Therefore, online full-size detection of key parts becomes the production problem of these enterprises, and an automatic measuring instrument with the function of traditional three-coordinate measuring machine and suitable for the machining production site with high humidity and oil mist in air is urgently needed.

[0003] Compared with traditional three-coordinate, parallel type measuring equipment has no air floating guide rail, fast motion speed, simple structure, good environmental adaptability and other characteristics, and is not sensitive to temperature change, so it is very suitable for production site.But due to the more joints of parallel structure, the cumulative error of multiple joints causes that the motion platform controlled thereby cannot realize high-precision positioning, so it cannot meet the high-precision part measurement of workshop. UTILITY MODEL CONTENT

[0004] In order to solve the above technical problems, the application designs a kind of measuring device for improving the motion accuracy of parallel mechanism, so as to drive the dynamic platform to move by using linear motion module and support frame, and measure the Cartesian coordinate point of probe ball center by separately setting measuring rod, and then measure the actual value of measured object.

[0005] A kind of measuring device for improving the motion accuracy of parallel mechanism, including bottom platform, stand column, dynamic platform and top platform;

[0006] The stand column is fixedly arranged between the bottom platform and the top platform;

[0007] The dynamic platform is arranged in the space formed by the bottom platform, the stand column and the top platform;

[0008] The stand column is provided with linear motion module;

[0009] The linear motion module is connected with a support frame, one end of the support frame is connected with the linear motion module, and the other end is connected with the movable platform.

[0010] Preferably, three hook hinges are uniformly arranged on the outer side wall of the movable platform, and the bottom of the support frame is connected with the movable platform through the hook hinges.

[0011] Preferably, a hook hinge is arranged on the linear motion module, and the top of the support frame is connected with the hook hinge.

[0012] Preferably, three spherical hinges are uniformly arranged on the movable platform, and a measuring rod is connected with the spherical hinges.

[0013] Three hook hinges are uniformly arranged on the top platform, and the upper part of the measuring rod is connected with the top platform through the hook hinges.

[0014] Preferably, a trigger type measuring head is mounted on the bottom of the movable platform.

[0015] Preferably, a scale is arranged on the measuring rod.

[0016] Preferably, two support frames are arranged between the single hook hinge on the outer side wall of the movable platform and the corresponding linear motion module.

[0017] The advantages and effects of the present application are as follows:

[0018] The present application discloses a kind of measurement device for improving parallel mechanism motion precision, including bottom platform, column, movable platform and top platform;The column is fixedly arranged between bottom platform and top platform;The movable platform is arranged in the space formed by bottom platform, column and top platform;Linear motion module is arranged on the column;The linear motion module is connected with a support frame, one end of the support frame is connected with the linear motion module, and the other end is connected with the movable platform;Three hook hinges are uniformly arranged on the outer side wall of the movable platform, and the bottom of the support frame is connected with the movable platform through the hook hinges;Three spherical hinges are uniformly arranged on the movable platform, and a measuring rod is connected with the spherical hinges;Three hook hinges are uniformly arranged on the top platform, and the upper part of the measuring rod is connected with the top platform through the hook hinges. Through the above design, the present application can realize that linear motion module drives bottom platform to move, and when bottom platform moves, it will drive measuring rod to move, and then realize the measurement of Cartesian coordinate point of trigger type measuring head.

[0019] The above description is only a summary of the technical scheme of the present application, in order to more clearly understand the technical means of the present application, so as to be implemented according to the content of the specification, and in order to make the above and other purposes, characteristics and advantages of the present application more obvious and easy to understand, the following will be described in detail with the preferred embodiment of the present application and with the help of the drawings.

[0020] The above and other objects, advantages and features of the present application will become more apparent after a reading of the following detailed description of the embodiments thereof, taken in conjunction with the annexed drawings. BRIEF DESCRIPTION OF DRAWINGS

[0021] In order to more clearly illustrate the technical solutions of the embodiments of the present application or the prior art, the drawings needed to be used in the embodiments or the prior art description will be briefly introduced below. Obviously, the drawings in the following description are some embodiments of the present application, and other drawings can be obtained by those skilled in the art without creative effort. In all the drawings, similar elements or parts are generally identified by similar reference signs. In the drawings, the elements or parts are not necessarily drawn according to the actual proportions.

[0022] Fig. 1 A front view of a measuring device for improving the motion accuracy of a parallel mechanism designed by the present application;

[0023] Fig. 2 A side view of a measuring device for improving the motion accuracy of a parallel mechanism designed by the present application;

[0024] Fig. 3 An internal structure diagram of a measuring device for improving the motion accuracy of a parallel mechanism designed by the present application;

[0025] Reference signs:

[0026] 1, bottom platform; 2, column; 3, moving platform; 4, top platform; 5, support frame; 6, linear motion module; 7, hooke joint; 8, spherical hinge; 9, measuring rod. DETAILED DESCRIPTION

[0027] In order to make the purposes, technical solutions and advantages of the embodiments of the present application more clear, the technical solutions in the embodiments of the present application will be clearly and completely described below in conjunction with the drawings in the embodiments of the present application. Obviously, the described embodiments are some embodiments of the present application, not all embodiments. In the following description, specific details such as specific configurations and components are provided only to help a comprehensive understanding of the embodiments of the present application. Therefore, those skilled in the art should understand that various changes and modifications can be made to the embodiments described herein without departing from the scope and spirit of the present application. In addition, in order to be clear and concise, the description of known functions and structures is omitted in the embodiments.

[0028] It should be understood that the phrase "an embodiment" or "this embodiment" throughout the specification means that a specific feature, structure, or characteristic related to the embodiment is included in at least one embodiment of this application. Therefore, "an embodiment" or "this embodiment" appearing throughout the specification does not necessarily refer to the same embodiment. Furthermore, these specific features, structures, or characteristics can be combined in any suitable manner in one or more embodiments.

[0029] Furthermore, reference numerals and / or letters may be repeated in different examples within this application. Such repetition is for the purpose of simplification and clarity and does not in itself indicate a relationship between the various embodiments and / or settings discussed.

[0030] In this article, the term "and / or" is merely a description of the relationship between related objects, indicating that three relationships can exist. For example, A and / or B can mean: A exists alone, B exists alone, and A and B exist simultaneously. The term " / and" in this article describes another type of relationship between related objects, indicating that two relationships can exist. For example, A / and B can mean: A exists alone, and A and B exist alone. In addition, the character " / " in this article generally indicates that the related objects before and after it are in an "or" relationship.

[0031] In this article, the term "at least one" is merely a description of the relationship between related objects, indicating that there can be three relationships. For example, "at least one of A and B" can mean: A exists alone, A and B exist simultaneously, or B exists alone.

[0032] It should also be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion.

[0033] Example 1

[0034] Please refer to Figs. 1-3 This embodiment mainly introduces a measuring device for improving the motion accuracy of a parallel mechanism, including a base platform 1, a column 2, a moving platform 3, and a top platform 4;

[0035] The column 2 is fixedly installed between the bottom platform 1 and the top platform 4;

[0036] The moving platform 3 is set in the space formed by the bottom platform 1, the column 2 and the top platform 4;

[0037] A linear motion module 6 is provided on the column 2;

[0038] The linear motion module 6 is connected with a support frame 5, one end of the support frame 5 is connected with the linear motion module 6, and the other end is connected with the movable platform 3.

[0039] Further, three hook hinges 7 are uniformly arranged on the outer side wall of the movable platform 3, and the bottom of the support frame 5 is connected with the movable platform 3 through the hook hinges 7. The linear motion module 6 drives the support frame 5 to move, and the support frame 5 drives the movable platform 3 to move.

[0040] Further, a hook hinge 7 is arranged on the linear motion module 6, and the top of the support frame 5 is connected with the hook hinge 7.

[0041] Further, three spherical hinges 8 are uniformly arranged on the movable platform 3, and a measuring rod 9 is connected with the spherical hinges 8.

[0042] Three hook hinges 7 are uniformly arranged on the top platform 4, and the upper part of the measuring rod 9 is connected with the top platform 4 through the hook hinges 7. The movable platform 3 moves, thereby driving the measuring rod to move, and the measuring rod can be used to detect the moving distance.

[0043] Further, a trigger type measuring head is installed at the bottom of the movable platform 3.

[0044] Further, a scale is arranged on the measuring rod 9.

[0045] Further, two support frames 5 are arranged between the single hook hinge 7 on the outer side wall of the movable platform 3 and the corresponding linear motion module 6.

[0046] Further, the bottom platform 1, the movable platform 3 and the top platform 4 are all triangular structures.

[0047] The measuring device for improving the motion precision of a parallel mechanism designed in the application comprises a bottom platform, a column, a movable platform and a top platform. The column is fixedly arranged between the bottom platform and the top platform. The movable platform is arranged in the space formed by the bottom platform, the column and the top platform. The column is provided with a linear motion module. The linear motion module is connected with a support frame. One end of the support frame is connected with the linear motion module, and the other end is connected with the movable platform. Three hook hinges are uniformly arranged on the outer side wall of the movable platform. The bottom of the support frame is connected with the movable platform through the hook hinges. Three spherical hinges are uniformly arranged on the movable platform, and a measuring rod is connected with the spherical hinges. Three hook hinges are uniformly arranged on the top platform, and the upper part of the measuring rod is connected with the top platform through the hook hinges. Through the above design, the linear motion module can drive the bottom platform to move, and the bottom platform can drive the measuring rod to move when the bottom platform moves, thereby realizing the measurement of the Cartesian coordinate point of the trigger type measuring head.

[0048] The above merely describes preferred embodiments of the present application and is not intended to limit the protection scope of the present application. For those skilled in the art, the present application can be variously changed and modified. Any change, modification, replacement, integration and parameter change of the embodiments within the spirit and principle of the present application, which can realize the same function without departing from the principle and spirit of the present application, falls within the protection scope of the present application.

Claims

1. A measuring device for improving the motion accuracy of parallel mechanisms, characterized in that, It includes a bottom platform (1), a column (2), a moving platform (3), and a top platform (4); The column (2) is fixedly installed between the bottom platform (1) and the top platform (4); The moving platform (3) is set in the space formed by the bottom platform (1), the column (2) and the top platform (4); A linear motion module (6) is provided on the column (2); The linear motion module (6) is connected to a support frame (5), one end of which is connected to the linear motion module (6) and the other end is connected to the moving platform (3).

2. The measuring device for improving the motion accuracy of parallel mechanisms according to claim 1, characterized in that, Three Hooke hinges (7) are evenly arranged on the outer side wall of the moving platform (3), and the bottom of the support frame (5) is connected to the moving platform (3) through the Hooke hinges (7).

3. The measuring device for improving the motion accuracy of a parallel mechanism according to claim 2, characterized in that, The linear motion module (6) is provided with a Hooke hinge (7), and the top of the support frame (5) is connected to the Hooke hinge (7).

4. The measuring device for improving the motion accuracy of a parallel mechanism according to claim 3, characterized in that, Three ball joints (8) are evenly arranged on the moving platform (3), and a measuring rod (9) is connected to the ball joints (8). Three Hooke hinges (7) are evenly arranged on the top platform (4), and the upper part of the measuring rod (9) is connected to the top platform (4) through the Hooke hinges (7).

5. The measuring device for improving the motion accuracy of a parallel mechanism according to claim 1, characterized in that, A trigger-type measuring head is installed at the bottom of the moving platform (3).

6. The measuring device for improving the motion accuracy of a parallel mechanism according to claim 4, characterized in that, A scale is provided on the measuring rod (9).

7. The measuring device for improving the motion accuracy of a parallel mechanism according to claim 4, characterized in that, Two support frames (5) are provided between the single Hooke hinge (7) on the outer wall of the moving platform (3) and the corresponding linear motion module (6).

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