Six-degree-of-freedom motion sliding table

Abstract

The utility model relates to the technical field of six-degree-of-freedom mechanical structures, in particular to a six-degree-of-freedom movement sliding table, hinge assemblies are arranged at the joints of a push rod body and a sliding table body and the joint of a push rod body and a base body respectively, each hinge assembly comprises an upper connecting block and a lower connecting block arranged at the lower end of the upper connecting block, and an upper middle shaft penetrates through the inner wall of each upper connecting block; an upper bearing is arranged on the outer wall of the upper middle shaft, upper connecting screws are connected to the two ends of the upper middle shaft in a threaded mode, a lower middle shaft is arranged on the inner wall of the lower connecting block in a penetrating mode, a lower bearing is arranged on the outer wall of the lower middle shaft, lower connecting screws are connected to the two ends of the lower connecting block in a threaded mode, and the upper bearing and the lower bearing are both deep groove ball bearings. The upper middle shaft and the lower middle shaft are fixed through the deep groove ball bearings, the axial gap between the upper middle shaft and the lower middle shaft is eliminated, the upper middle shaft and the lower middle shaft are fixed through the middle connecting screws, namely rigid connection is achieved, the gap between the upper middle shaft and the lower middle shaft is completely eliminated, and the precision of the whole hinge is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to six degree of freedom mechanical structure technical field, concretely is a six degree of freedom motion sliding table. BACKGROUND

[0002] Six degree of freedom motion sliding table, commonly known as six degree of freedom motion platform, is a kind of high-tech simulation device.In the field of high-tech simulation device, six degree of freedom motion platform as an advanced device capable of simulating the movement of objects in six degrees of freedom (movement freedom along X, Y, Z axis and rotation freedom around the three axes) is widely used in industrial testing, education and training, entertainment simulation and other fields.The platform can simulate various complex spatial motion attitudes by accurately controlling the movement in each direction, and provide realistic simulation experience for users.The performance of six degree of freedom motion platform depends largely on the design and optimization of its hinge structure, and the stability and precision of hinge structure as a key component connecting various parts of the platform directly affect the overall performance of the platform.The existing six degree of freedom motion platform hinge structure has large axial gap in the middle shaft, and the connecting part is loose, which may cause the decline of the motion precision and stability of the platform, and affect the user experience.

[0003] To solve the above problems, the utility model provides a six degree of freedom motion sliding table. UTILITY MODEL CONTENT

[0004] The utility model discloses a kind of six degree of freedom motion sliding tables, the inner wall of upper connector is penetrated and is provided with upper middle shaft, the outer wall of upper middle shaft is provided with upper bearing, the both ends of upper middle shaft are screw-connected with upper joint screw, the inner wall of lower connector is penetrated and is provided with lower middle shaft, the outer wall of lower middle shaft is provided with lower bearing, the both ends of lower connector are screw-connected with lower joint screw, to solve the problems in background art.

[0005] To achieve the above object, the utility model provides the following technical scheme: a kind of six degree of freedom motion sliding table, including sliding table main body and base main body, six groups of push rod main body are provided between sliding table main body and base main body, each group of push rod main body is driven by step motor, the connecting place of push rod main body and sliding table main body and base main body is provided with hinge assembly, the hinge assembly includes upper connector and the lower connector of the lower end of upper connector, the inner wall of upper connector is penetrated and is provided with upper middle shaft, the outer wall of upper middle shaft is provided with upper bearing, the both ends of upper middle shaft are screw-connected with upper joint screw;

[0006] The inner wall of lower connector is penetrated and is provided with lower middle shaft, the outer wall of lower middle shaft is provided with lower bearing, the both ends of lower connector are screw-connected with lower joint screw, the upper bearing and lower bearing are all deep groove ball bearings.

[0007] Further, the lower wall of the upper joint block is threadedly connected with a middle joint screw, and the lower end of the middle joint screw is threadedly connected with a lower middle shaft.

[0008] Further, the upper middle shaft is rotationally connected with the upper joint block, and the lower middle shaft is rotationally connected with the lower joint block.

[0009] Further, the base body comprises an upper mounting block connected with the push rod body, and a lower supporting block arranged at the lower end of the upper mounting block.

[0010] Further, rubber blocks are fixedly connected between the upper mounting block and the lower supporting block, and the rubber blocks are arranged in two groups and are symmetrically distributed about the center of the lower supporting block.

[0011] Further, the upper wall of the lower supporting block is fixedly connected with a buffer block, and the upper wall of the buffer block is in an arc structure.

[0012] Further, the buffer block is a component made of rubber material, and the buffer block is hollow inside.

[0013] Compared with the prior art, the six-degree-of-freedom motion sliding table has the following beneficial effects:

[0014] The six-degree-of-freedom motion sliding table comprises a sliding table body, a base body, a push rod body and a hinge assembly. BRIEF DESCRIPTION OF DRAWINGS

[0015] Fig. 1 It is a whole three-dimensional structure schematic view of the utility model;

[0016] Fig. 2 It is a hinge assembly structure schematic view of the utility model;

[0017] Fig. 3 It is a base body structure schematic view of the utility model.

[0018] In the drawing: 1, sliding table body; 2, base body; 21, upper mounting block; 22, lower supporting block; 23, rubber block; 24, buffer block; 3, push rod body; 4, hinge assembly; 41, upper joint block; 42, lower joint block; 43, upper middle shaft; 44, upper bearing; 45, upper joint screw; 46, lower middle shaft; 47, lower bearing; 48, lower joint screw; 49, middle joint screw. DETAILED DESCRIPTION

[0019] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the scope of protection of the utility model.

[0020] Please refer to Figs. 1-3 In order to solve the problem that the axial gap of the hinge structure of the existing six-degree-of-freedom motion platform is large, the connecting part is loose, which may cause the motion accuracy and stability of the platform to decrease, and affect the user's use experience, the following preferred technical solutions are provided:

[0021] A six-degree-of-freedom motion sliding table, comprising a sliding table main body 1 and a base main body 2, six groups of push rod main bodies 3 are arranged between the sliding table main body 1 and the base main body 2, each group of push rod main bodies 3 is driven by a stepping motor, hinge assemblies 4 are arranged at the connecting parts of the push rod main bodies 3 and the sliding table main body 1 and the base main body 2 respectively, the hinge assembly 4 comprises an upper connecting block 41 and a lower connecting block 42 arranged at the lower end of the upper connecting block 41, an upper shaft 43 is arranged through the inner wall of the upper connecting block 41, an upper bearing 44 is arranged on the outer wall of the upper shaft 43, upper connecting screws 45 are threadedly connected to the two ends of the upper shaft 43, a lower shaft 46 is arranged through the inner wall of the lower connecting block 42, a lower bearing 47 is arranged on the outer wall of the lower shaft 46, lower connecting screws 48 are threadedly connected to the two ends of the lower connecting block 42, the upper bearing 44 and the lower bearing 47 are deep groove ball bearings, a middle connecting screw 49 is threadedly connected to the lower wall of the upper connecting block 41, the lower end of the middle connecting screw 49 is threadedly connected to the lower shaft 46, the upper shaft 43 is rotationally connected to the upper connecting block 41, and the lower shaft 46 is rotationally connected to the lower connecting block 42.

[0022] The base main body 2 comprises an upper mounting block 21 connected to the push rod main body 3 and a lower supporting block 22 arranged at the lower end of the upper mounting block 21, a rubber block 23 is fixedly connected between the upper mounting block 21 and the lower supporting block 22, the rubber block 23 is arranged in two groups and is symmetrically distributed about the center of the lower supporting block 22, a buffer block 24 is fixedly connected to the upper wall of the lower supporting block 22, the upper wall of the buffer block 24 is of an arc structure, the buffer block 24 is a component made of rubber material, and the inside of the buffer block 24 is hollow.

[0023] Specifically, by not only the motor drives the push rod body 3 to do the extension change movement, six push rod bodies 3 and jointly drive the slide table body 1, each push rod body 3 can realize the independent extension movement in space, can drive to complete the six degrees of freedom motion in space, thereby realizing the change of the pose of the slide table body 1, through the upper connecting block 41 and the lower connecting block 42 are divided into two layers, and the upper and lower middle shafts 43 and 46 are fixed by using deep groove ball bearings, the axial gap of the upper and lower middle shafts is eliminated, the slide table body 1 or the base body 2 is connected through the upper connecting screw 45, the push rod body 3 is connected through the lower connecting screw 48, the upper and lower layers are fixed through the middle connecting screw 49, that is, rigidly connected, the connection between the two completely eliminates the gap, improves the overall hinge precision, solves the problems that the axial gap of the hinge structure of the existing six degrees of freedom motion platform is large, the connection part is loose, which may cause the motion precision and stability of the platform to decline, and affects the user's use experience.

[0024] When the slide table body 1 is subjected to strong impact, the impact force will be transmitted to the base body 2, thereby driving the upper block 21 to press down the supporting block 22, which will extrude the rubber block 23, and after extruding to a certain extent, the buffer block 24 will be extruded, at this time, through the cooperation of the elastic reaction force of the rubber block 23 and the buffer block 24, the impact force will be buffered, and the slide table is protected.

[0025] It should be noted that in this text, 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 that these entities or operations exist in any such actual relationship or order. Moreover, the terms "include", "contain" or any other variants thereof are intended to cover non-exclusive inclusion, so that the process, method, article or equipment including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or equipment.

[0026] Although the embodiments of the present application have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to the embodiments without departing from the principles and spirits of the present application, and the scope of the present application is defined by the appended claims and their equivalents.

Claims

1. A six-degree-of-freedom motion slide table, comprising a slide table body (1) and a base body (2), six groups of push rod bodies (3) are arranged between the slide table body (1) and the base body (2), each group of push rod bodies (3) is driven by a stepping motor, characterized in that: The connecting part of the push rod body (3) and the slide table body (1) and the base body (2) is provided with a hinge assembly (4), the hinge assembly (4) comprises an upper joint block (41) and a lower joint block (42) arranged at the lower end of the upper joint block (41), the inner wall of the upper joint block (41) is provided with an upper middle shaft (43), the outer wall of the upper middle shaft (43) is provided with an upper bearing (44), and the two ends of the upper middle shaft (43) are threadedly connected with upper joint screws (45). The inner wall of the lower joint block (42) is provided with a lower middle shaft (46), the outer wall of the lower middle shaft (46) is provided with a lower bearing (47), and the two ends of the lower joint block (42) are threadedly connected with lower joint screws (48), the upper bearing (44) and the lower bearing (47) are both deep groove ball bearings.

2. The six-degree-of-freedom motion slide platform of claim 1, wherein: The lower wall of the upper joint block (41) is threadedly connected with a middle joint screw (49), and the lower end of the middle joint screw (49) is threadedly connected with the lower middle shaft (46).

3. The six-degree-of-freedom motion slide platform of claim 1, wherein: The upper middle shaft (43) is rotationally connected with the upper joint block (41), and the lower middle shaft (46) is rotationally connected with the lower joint block (42).

4. The six-degree-of-freedom motion slide table according to claim 1, wherein: The base body (2) comprises an upper mounting block (21) connected with the push rod body (3) and a lower supporting block (22) arranged at the lower end of the upper mounting block (21).

5. The six degree of freedom motion slide of claim 4, wherein: The upper mounting block (21) and the lower supporting block (22) are fixedly connected with rubber blocks (23), the rubber blocks (23) are arranged in two groups and are symmetrically distributed about the center of the lower supporting block (22).

6. The six-degree-of-freedom motion slide platform of claim 5, wherein: The upper wall of the lower supporting block (22) is fixedly connected with a buffer block (24), and the upper wall of the buffer block (24) is in an arc shape.

7. The six-degree-of-freedom motion slide platform of claim 6, wherein: The buffer block (24) is a component made of rubber material, and the inside of the buffer block (24) is hollow.

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