A linear motion platform

Abstract

The utility model belongs to mobile equipment technical field discloses a linear motion platform, including bottom plate, first mobile platform and second mobile platform, first mobile platform is placed on the bottom plate, including first drive part and first platform, first drive part can drive first platform relative bottom plate moves along the first direction, second mobile platform is placed on the first platform, including second drive part and second platform, second drive part can drive second platform relative first platform moves along the second direction, first drive part and second drive part are linear bar -like motor, and the first direction and the second direction are perpendicular. The linear motion platform of the utility model not only high distance precision of moving but also can move fast and steadily, and still need not frequent maintenance simultaneously.

Description

Technical Field

[0001] This utility model relates to the field of mobile device technology, and in particular to a linear motion platform. Background Technology

[0002] With the development of industrial processes, mechanical motion platforms are widely used in fields such as industrial automation. By controlling linear motion platforms, the position of objects carried on the platform in the horizontal plane can be adjusted. Most existing linear motion platforms are driven by ball screws to move the platform and adjust its position. However, ball screw transmission has problems such as backlash, wear, and poor rigidity. Therefore, existing linear motion platforms have poor accuracy in moving distance, poor stability during movement, and cannot move quickly, while also requiring frequent maintenance.

[0003] Therefore, there is an urgent need for a linear motion platform to solve the above-mentioned technical problems. Utility Model Content

[0004] The purpose of this utility model is to provide a linear motion platform that can solve the problem that most existing motion platforms drive the platform to move and adjust the position by means of ball screw transmission. Due to the disadvantages of backlash, wear and poor rigidity of the ball screw transmission method, the existing linear motion platforms have problems such as poor accuracy of movement distance, poor stability during movement, inability to move quickly and the need for frequent maintenance.

[0005] To achieve this objective, the present invention adopts the following technical solution:

[0006] A linear motion platform, comprising:

[0007] A base plate and a first movable platform, wherein the first movable platform is placed on the base plate and is capable of moving relative to the base plate along a first direction;

[0008] A second mobile platform is placed on the first mobile platform. The second mobile platform is capable of moving relative to the first mobile platform along a second direction, which is perpendicular to the first direction.

[0009] Two fasteners are fixedly mounted on the first moving platform. One fastener is used to selectively fix the base plate and the first moving platform; the other fastener is used to selectively fix the first moving platform and the second moving platform.

[0010] As a preferred technical solution for a linear motion platform, the first moving platform includes a first driving member and a first platform, wherein the first driving member is capable of driving the first platform to move along the first direction; and the second moving platform includes a second driving member and a second platform, wherein the second driving member is capable of driving the second platform to move along the second direction.

[0011] As a preferred technical solution for a linear motion platform, both the first driving component and the second driving component are linear rod motors.

[0012] As a preferred technical solution for a linear motion platform, the linear rod motor includes a stator, a mover, and two support seats. The two support seats are arranged opposite to each other, and the stator passes through the mover and is fixedly connected to the two support seats at both ends.

[0013] As a preferred technical solution for the linear motion platform, the linear motion platform further includes a first guide rail and a second guide rail. The first guide rail is laid on the base plate along the first direction, and the first platform is guidedly connected to the first guide rail. The second guide rail is laid on the first platform along the second direction, and the second platform is guidedly connected to the second guide rail.

[0014] As a preferred technical solution for the linear motion platform, the bottom surface of the first platform is provided with a first guide groove, which is guided and engaged with the first guide rail; and the bottom surface of the second platform is provided with a second guide groove, which is guided and engaged with the second platform.

[0015] As a preferred technical solution for the linear motion platform, the fixing member has an unfolded state and a folded state. The base plate and the second moving platform are both provided with a first buckle, and the fixing member is provided with a second buckle. When the fixing member is adjusted from the folded state to the unfolded state, the second buckle and the first buckle engage with each other.

[0016] As a preferred technical solution for a linear motion platform, the fixing component includes two connecting plates and a pin. One end of the two connecting plates along the length direction is connected by the pin, and the other end of the two connecting plates along the length direction can be selectively engaged.

[0017] As a preferred technical solution for the linear motion platform, the base plate is provided with a first rectangular hole extending along the first direction, and the bottom surface of the first platform is provided with a first limiting member, which is placed inside the first rectangular hole; and the first platform is provided with a second rectangular hole extending along the second direction, and the bottom surface of the second platform is provided with a second limiting member, which is placed inside the second rectangular hole.

[0018] As a preferred technical solution for a linear motion platform, the first limiting member includes a first main body and first buffer blocks located on both sides of the first main body along the first direction, the first buffer blocks being bonded to the first main body; and the second limiting member includes a second main body and second buffer blocks located on both sides of the second main body along the length direction, the second buffer blocks being bonded to the second main body.

[0019] The beneficial effects of this utility model are:

[0020] The linear motion platform provided by this utility model utilizes linear rod motors for both the first and second driving components. Since linear rod motors are based on the principles of electromagnetic induction and Ampere's force, and achieve a direct conversion from rotational motion to linear motion by unfolding the rotary motor structure axially and rolling it into a cylindrical shape, linear rod motors offer advantages such as high thrust, high acceleration, and high precision. Using linear rod motors instead of traditional ball screw and screw drives to move the first and second platforms not only improves the accuracy of the linear motion platform's movement distance, achieving nanometer-level precision, but also enables the first and second platforms to move quickly and smoothly, comprehensively improving the performance of the linear motion platform and broadening its application scenarios. Furthermore, linear rod motors have the characteristic of contactless transmission, eliminating frictional losses compared to ball screw and screw structures, reducing the need for frequent maintenance, and lowering the workload of operators. Attached Figure Description

[0021] Figure 1 This is a first-person exploded view of the linear motion platform provided by this utility model;

[0022] Figure 2 This is a second-view exploded view of the linear motion platform provided by this utility model;

[0023] Figure 3 This is a schematic diagram of the linear motion platform provided by this utility model.

[0024] In the picture:

[0025] 1. Base plate; 2. First moving platform; 21. First driving component; 22. First platform; 221. First folded edge; 3. Second moving platform; 31. Second driving component; 32. Second platform; 321. Second folded edge; 4. Fixing component; 5. First guide rail; 6. Second guide rail; 7. First limiting component; 71. First main body; 72. First buffer block; 8. Second limiting component; 81. Second main body; 82. Second buffer block. Detailed Implementation

[0026] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, not the entire structure.

[0027] In the description of this utility model, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0028] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0029] In the description of this embodiment, the terms "upper," "lower," "right," and "left," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and 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. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are only used for distinction in description and have no special meaning.

[0030] The technical solution of this utility model will be further described below with reference to the accompanying drawings and specific embodiments.

[0031] like Figures 1 to 3As shown in the illustration, this embodiment provides a linear motion platform, including a base plate 1, a first moving platform 2, and a second moving platform 3. The first moving platform 2 is placed on the base plate 1 and includes a first driving member 21 and a first platform 22. The first driving member 21 can drive the first platform 22 to move along a first direction. The second moving platform 3 is placed on the first platform 22 and includes a second driving member 31 and a second platform 32. The second driving member 31 can drive the second platform 32 to move relative to the first platform 22 along a second direction. Both the first driving member 21 and the second driving member 31 are linear rod motors, and the first and second directions are perpendicular to each other. Specifically, the first direction is the X-axis direction, and the second direction is the Y-axis direction. By controlling the movement of the first platform 22 and the second platform 32 respectively through the first driving member 21 and the second driving member 31, the position of the second platform 32 in the horizontal plane can be adjusted, wherein the object being moved is placed on the second platform 32.

[0032] The linear motion platform provided in this embodiment uses linear rod motors for both the first drive component 21 and the second drive component 31. Since linear rod motors are based on the principles of electromagnetic induction and Ampere's force, and achieve a direct conversion from rotational motion to linear motion by unfolding the rotary motor structure axially and rolling it into a cylindrical shape, linear rod motors offer advantages such as high thrust, high acceleration, and high precision. Using linear rod motors instead of the traditional ball screw and screw transmission method to drive the first platform 22 and the second platform 32 not only improves the accuracy of the linear motion platform's movement distance, achieving nanometer-level precision, but also enables the first platform 22 and the second platform 32 to move quickly and smoothly, comprehensively improving the performance of the linear motion platform. Simultaneously, linear rod motors also have the characteristic of contactless transmission, eliminating frictional losses compared to ball screw and screw structures, reducing the need for frequent maintenance, and lowering the workload of operators.

[0033] Since linear rod motors achieve linear movement based on the principles of electromagnetic induction and Ampere force, they do not generate a large amount of metal debris during operation. Compared to ball screw structures, they can be used in cleanrooms and other environments with high cleanliness requirements, thus improving the versatility of linear motion platforms in various applications.

[0034] For example, a linear rod motor includes a stator, a mover, and two support seats. The two support seats are arranged opposite to each other. The stator passes through the mover and its two ends are fixedly connected to the two support seats respectively. When the linear rod motor is running, the mover moves linearly along the stator. Specifically, in the first moving platform 2, the stator of the linear rod motor is placed along a first direction, and the mover is connected to the first platform 22, so that the first driving member 21 drives the first platform 22 to move along the first direction. In the second moving platform 3, the stator of the linear rod motor is placed along a second direction, and the mover is connected to the second platform 32, so that the second driving member 31 drives the second platform 32 to move along the second direction. The specific structure of the linear rod motor can be found in existing technology and will not be elaborated further here.

[0035] Furthermore, the linear motion platform also includes a first guide rail 5 and a second guide rail 6. The first guide rail 5 is laid on the base plate 1 along a first direction, and the first platform 22 is guided to the first guide rail 5. The first guide rail 5 guides the movement of the first platform 22, enabling the first platform 22 to move more accurately relative to the base plate 1 along the first direction, thereby improving the positioning accuracy of the linear motion platform in the first direction. The second guide rail 6 is laid on the first platform 22 along a second direction, and the second platform 32 is guided to the second guide rail 6. The second guide rail 6 guides the movement of the second platform 32, enabling the second platform 32 to move more accurately relative to the first platform 22 along the second direction, thereby improving the positioning accuracy of the linear motion platform in the second direction.

[0036] For example, the first platform 22 has first flanges 221 on both sides along its width direction, and two first guide rails 5 are provided. The two first guide rails 5 are parallel and spaced apart along a first direction on the base plate 1. The first platform 22 covers the two first guide rails 5, and the inner sides of the two first flanges 221 are in contact with the sides of the two first guide rails 5, so that the first platform 22 moves along the laying direction of the first guide rails 5 when it moves, thus guiding the movement of the first platform 22. Similarly, the second platform 32 has second flanges 321 on both sides along its width direction, and two second guide rails 6 are provided. The two second guide rails 6 are parallel and spaced apart along a first direction on the first platform 22, and the second platform 32 covers the two second guide rails 6, and the inner sides of the two second flanges 321 are in contact with the sides of the two second guide rails 6, so that the second platform 32 moves along the laying direction of the second guide rails 6 when it moves, thus guiding the movement of the second platform 32.

[0037] The first guide rail 5 and the second guide rail 6 are both cross roller guide rails. Cross roller guide rails are precision linear transmission components based on the principle of rolling friction. They have the advantages of low rolling friction, good stability, large contact area, and small elastic deformation. They can also withstand multi-directional loads. Compared with linear guide rails, they are more suitable for high-precision and high-rigidity working conditions, which can further ensure the accuracy and stability of the linear moving platform.

[0038] In this embodiment, the linear motion platform also includes two fixing members 4. One fixing member 4 is used to selectively fix the base plate 1 and the first moving platform 2 to prevent wobbling between the first moving platform 2 and the base plate 1. The other fixing member 4 is used to selectively fix the first moving platform 2 and the second moving platform 3 to prevent wobbling between the first moving platform 2 and the second moving platform 3. When the operator controls the first moving platform 2 and the second moving platform 3 to transport the item to the target position, the two fixing members 4 simultaneously fix the first moving platform 2, the base plate 1, and the second moving platform 3. When the robotic arm picks up an item and touches the second moving platform 3, the two fixing members 4 prevent wobbling between the base plate 1, the first moving platform 2, and the second moving platform 3, thus preventing loosening of the internal connecting parts of the linear motion platform and ensuring the moving accuracy and service life of the linear motion platform.

[0039] The fixing component 4 has an unfolded state and a folded state. First latches are provided on both the base plate 1 and the second moving platform 3, and second latches are provided on the fixing component 4. When the fixing component 4 is adjusted from the folded state to the unfolded state, the first opening engages with the second latch. Specifically, the two fixing components 4 are respectively fixed to the side wall of the first platform 22 extending along a first direction and the side wall of the first platform 22 extending along a second direction. Multiple first latches are spaced apart on the corresponding side walls of the base plate 1 and the second platform 32. When the first driving component 21 drives the first platform 22 to a predetermined position, the object moves to the point corresponding to the X-axis in the horizontal plane. The operator operates the fixing component 4 used to fix the base plate 1 and the first platform 22, adjusting the corresponding fixing component 4 to the unfolded state and engaging the second latch of the fixing component 4 with the first latch on the base plate 1, thus completing the fixation of the first platform 22 to the base plate 1. Simultaneously, the engaging method makes it easier for the operator to operate and reduces the difficulty of operation.

[0040] When the second driving component 31 drives the second platform 32 to move to the predetermined position, the item moves to the target position in the horizontal plane. The operator operates the fixing component 4 used to fix the first platform 22 and the second platform 32, adjusts the corresponding fixing component 4 to the unfolded state, and engages the second buckle of the fixing component 4 with the first buckle on the second platform 32, thus completing the fixing of the first platform 22 and the second platform 32.

[0041] For example, the fastener 4 includes two connecting plates and a pin. One end of the two connecting plates along their length is connected by the pin, thereby enabling a rotatable connection between the two connecting plates. One connecting plate is connected to the side wall of the first platform 22. The other connecting plate has a second latch on the side facing the base plate 1 or the second platform 32 when rotating away from the first platform 22, so that the second latch engages with the first latch to fix the first platform 22 to the base plate 1 and the first platform 22 to the second platform 32. At the same time, the other end of the two connecting plates along their length can be selectively engaged. Specifically, a third latch is provided on the side of the connecting plate away from the second latch, and a third latch is provided on the connecting plate fixed to the first platform 22. After the second latch and the third latch engage with each other, the fastener 4 is adjusted to a folded state. By controlling the engagement and disengagement of the second latch and the third latch, the folded state and the unfolded state of the fastener 4 can be controlled. When the two connecting plates engage with each other, the fastener 4 is in a folded state; when the two connecting plates disengage with each other, the fastener 4 can be adjusted to an unfolded state. The structures of the first, second, and third latches can be referenced from conventional latch structures in the mechanical field, and no specific limitations are made here.

[0042] In this embodiment, the base plate 1 is provided with a first rectangular hole extending along a first direction, and the base plate 1 of the first platform 22 is provided with a first limiting member 7, which is placed inside the first rectangular hole. When the first driving member 21 drives the first platform 22 to move along the first direction, the first limiting member 7 will abut against the inner wall of the first rectangular hole, indicating that the first platform 22 has moved to its limit position along the first direction. The setting of the first limiting member 7 and the first rectangular hole limits the movement distance of the first moving platform 2 along the first direction. Similarly, the first platform 22 is provided with a second rectangular hole extending along a second direction, and the bottom surface of the second platform 32 is provided with a second limiting member 8, which is placed inside the second rectangular hole. When the second driving member 31 drives the second platform 32 to move along the second direction, the second limiting member 8 will abut against the inner wall of the second rectangular hole, indicating that the second platform 32 has moved to its limit position in the second direction. The setting of the second limiting member 8 and the second rectangular hole limits the movement distance of the second moving platform 3 along the second direction.

[0043] The first limiting member 7 includes a first main body 71 and first buffer blocks 72 located on both sides of the first main body 71 along a first direction. The first buffer blocks 72 are bonded to the first main body 71. When the first limiting member 7 abuts against the inner wall of the first rectangular hole, the first buffer blocks 72 deform, providing a buffering effect and preventing scratches on the first rectangular hole and the first limiting member 7, thus improving the service life of the first limiting member 7. The second limiting member 8 includes a second main body 81 and second buffer blocks 82 located on both sides of the second main body 81 along a second direction. The second buffer blocks 82 are bonded to the second main body 81. When the second limiting member 8 abuts against the inner wall of the second rectangular hole, the second buffer blocks 82 deform, providing a buffering effect and preventing scratches on the second rectangular hole and the second limiting member 8, thus improving the service life of the second limiting member 8.

[0044] Obviously, the above embodiments of this utility model are merely examples for clearly illustrating the present utility model, and are not intended to limit the implementation of the present utility model. Those skilled in the art can make various obvious changes, readjustments, and substitutions without departing from the protection scope of this utility model. It is neither necessary nor possible to exhaustively describe all embodiments here. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this utility model should be included within the protection scope of the claims of this utility model.

Claims

1. A linear motion platform, characterized in that, include: A base plate (1) and a first moving platform (2), the first moving platform (2) being placed on the base plate (1), the first moving platform (2) including a first driving member (21) and a first platform (22), the first driving member (21) being able to drive the first platform (22) to move relative to the base plate (1) in a first direction; The second moving platform (3) is placed on the first platform (22). The second moving platform (3) includes a second driving member (31) and a second platform (32). The second driving member (31) can drive the second platform (32) to move relative to the first platform (22) along a second direction. The first driving member (21) and the second driving member (31) are both linear rod motors. The first direction is perpendicular to the second direction.

2. The linear motion platform according to claim 1, characterized in that, The linear rod motor includes a stator, a mover, and two support bases. The two support bases are arranged opposite to each other. The stator passes through the mover and its two ends are fixedly connected to the two support bases respectively.

3. The linear motion platform according to claim 1, characterized in that, The linear motion platform also includes a first guide rail (5) and a second guide rail (6). The first guide rail (5) is laid on the base plate (1) along the first direction. The first platform (22) is guidedly connected to the first guide rail (5). The second guide rail (6) is laid on the first platform (22) along the second direction. The second platform (32) is guidedly connected to the second guide rail (6).

4. The linear motion platform according to claim 3, characterized in that, The first platform (22) has first flanges (221) on both sides along the width direction. There are two first guide rails (5). The two first guide rails (5) are parallel to each other along the second direction and are spaced apart on the base plate (1). The first platform (22) covers the two first guide rails (5), and the inner side of the two first flanges (221) is in contact with the side of the two first guide rails (5). The second platform (32) has second flanges (321) on both sides along the width direction. There are two second guide rails (6). The two second guide rails (6) are parallel to each other along the first direction and are spaced apart on the first platform (22). The second platform (32) covers the two second guide rails (6), and the inner side of the two second flanges (321) is in contact with the side of the two second guide rails (6).

5. The linear motion platform according to claim 4, characterized in that, Both the first guide rail (5) and the second guide rail (6) are crossed roller guide rails.

6. The linear motion platform according to claim 1, characterized in that, The linear motion platform also includes two fixing members (4), one of which is used to selectively fix the base plate (1) and the first moving platform (2); the other fixing member (4) is used to selectively fix the first moving platform (2) and the second moving platform (3).

7. The linear motion platform according to claim 6, characterized in that, The fixing member (4) has an unfolded state and a folded state. The base plate (1) and the second moving platform (3) are both provided with a first buckle, and the fixing member (4) is provided with a second buckle. When the fixing member (4) is adjusted from the folded state to the unfolded state, the second buckle and the first buckle engage with each other.

8. The linear motion platform according to claim 7, characterized in that, The fastener (4) includes two connecting plates and a pin. One end of the two connecting plates along the length direction is connected by the pin, and the other end of the two connecting plates along the length direction can be selectively engaged.

9. The linear motion platform according to claim 1, characterized in that, The base plate (1) is provided with a first rectangular hole extending along the first direction, and the bottom surface of the first platform (22) is provided with a first limiting member (7), which is placed inside the first rectangular hole; and the first platform (22) is provided with a second rectangular hole extending along the second direction, and the bottom surface of the second platform (32) is provided with a second limiting member (8), which is placed inside the second rectangular hole.

10. The linear motion platform according to claim 9, characterized in that, The first limiting member (7) includes a first body (71) and a first buffer block (72) located on both sides of the first body (71) along the first direction, and the first buffer block (72) and the first body (71) are bonded together. The second limiting member (8) includes a second body (81) and a second buffer block (82) located on both sides of the second body (81) along the length direction, the second buffer block (82) being bonded to the second body (81).

Images