Mobile station

Abstract

The utility model relates to the technical field of driving transmission, in particular to a mobile station. The movable table comprises a fixed seat, a movable seat, crossed roller guide rails and a linear motor, the linear motor comprises a coil and a magnetic track, and the magnetic track and the coil are matched with each other to enable the movable seat to reciprocate relative to the fixed seat; the moving seat can slide along the arc-shaped track relative to the fixed seat, so that an object arranged on the moving seat can move in an arc-shaped mode, the moving precision of the moving seat can be guaranteed through the linear motor, and therefore the precision of the moving seat is improved compared with the prior art. And meanwhile, the linear motor is arranged between the fixed seat and the movable seat, the situation that the linear motor occupies extra space is avoided, and compared with the prior art, the structure is more compact.

Description

Technical Field

[0001] The utility model relates to the technical field of drive transmission, in particular to a mobile station. Background Art

[0002] In the prior art, traditional transmission structures are usually used in optical or semiconductor processing and manufacturing to achieve small-angle rotation of the workpiece. Usually, the traditional transmission structure includes a motor-mounted ball screw combination or a motor-mounted gear rack combination. Although the traditional transmission structure can achieve the purpose of small-angle rotation, this type of transmission structure has low precision and occupies a large space.

[0003] Therefore, there is an urgent need for a mobile station to solve the above technical problems. Utility Model Content

[0004] The utility model aims to provide a mobile platform which can improve transmission accuracy and occupies a small space.

[0005] To achieve this purpose, the utility model adopts the following technical solutions:

[0006] Mobile station, including:

[0007] A fixed seat and a movable seat, wherein the movable seat is arranged above the fixed seat, and the movable seat can move in an arc shape along a first direction relative to the fixed seat;

[0008] A cross roller guide rail, the cross roller guide rail comprising a first guide rail and a second guide rail, the first guide rail and the second guide rail are both provided with an arc-shaped slide groove, the arc-shaped openings of the arc-shaped slide grooves are both facing the fixed seat or the movable seat, one of the first guide rail and the second guide rail is fixedly connected to the fixed seat, and the other is fixedly connected to the movable seat;

[0009] A linear motor, the linear motor comprising a magnetic track and a coil, the magnetic track being fixedly arranged on a side of the movable seat facing the fixed seat, the coil being arranged on a side of the fixed seat facing the movable seat, the coil and the magnetic track both being arc-shaped structures, and the arc-shaped openings of the coil and the magnetic track being oriented in the same direction as the arc-shaped opening of the arc-shaped slide groove.

[0010] As a preferred technical solution of the above-mentioned moving platform, a first receiving groove is arranged on a side of the moving seat facing the fixed seat, and the magnetic track is arranged in the first receiving groove.

[0011] As a preferred technical solution of the above-mentioned moving platform, a second receiving groove is provided on a side of the moving seat facing the fixed seat, and one of the first guide rail and the second guide rail is provided in the second receiving groove.

[0012] As a preferred technical solution of the above-mentioned mobile station, the first containing slot is communicated with the second containing slot.

[0013] As a preferred technical solution of the above-mentioned mobile station, a third accommodating groove is provided on a side of the fixed seat facing the movable seat, and the coil is arranged in the third accommodating groove.

[0014] As a preferred technical solution of the above-mentioned moving platform, an avoidance groove is further provided on a side of the fixed seat facing the moving seat, and the third accommodating groove is provided at the bottom of the avoidance groove.

[0015] As a preferred technical solution of the above-mentioned moving platform, a fourth receiving groove is arranged on a side of the fixed base facing the moving base, and the other of the first guide rail and the second guide rail is arranged in the fourth receiving groove.

[0016] As a preferred technical solution of the above-mentioned mobile station, it also includes an optical feedback structure, and the optical feedback structure can identify the rotation angle of the mobile base.

[0017] As a preferred technical solution of the above-mentioned moving platform, the optical feedback structure includes an encoder head and a grating scale, the encoder head is fixedly arranged at one end of the fixed base, the grating scale is arranged at one end of the moving base, and the encoder head cooperates with the grating scale.

[0018] As a preferred technical solution of the above-mentioned moving platform, the moving seat is provided with an arc-shaped protrusion on the bottom surface of the fixed seat facing the fixed seat, the bottom surface of the arc-shaped protrusion is an arc-shaped surface, and arc-shaped grooves matching with the arc-shaped protrusion are provided at both ends of the top of the fixed seat, the diameter of the trajectory circle where the arc-shaped working surface of the arc-shaped protrusion is located is the same as the diameter of the trajectory circle where the arc-shaped groove is located, and the arc-shaped protrusion can extend into the space formed by the arc-shaped groove and swing along the first direction in the arc-shaped groove.

[0019] The utility model has at least the following beneficial effects:

[0020] The linear motor includes a coil and a magnetic rail, so that the magnetic rail and the coil cooperate with each other to enable the movable seat to reciprocate relative to the fixed seat. Since the first guide rail and the second guide rail are both provided with arc-shaped slide grooves, the first guide rail and the second guide rail can enable the movable seat to slide along an arc track relative to the fixed seat when working, so that the objects set on the movable seat can achieve arc-shaped movement. Since the linear motor can ensure the movement accuracy of the movable seat, the accuracy of the movable seat provided in this embodiment is improved compared with the prior art. At the same time, the linear motor is arranged between the fixed seat and the movable seat, which avoids the linear motor occupying additional space and has a more compact structure than the prior art. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments of the present invention. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the contents of the embodiments of the present invention and these drawings without paying any creative work.

[0022] Figure 1 A schematic diagram of the structure of a mobile station provided by an embodiment of the utility model;

[0023] Figure 2 A schematic diagram of an exploded view of a mobile station provided in an embodiment of the utility model.

[0024] In the figure:

[0025] 1. Fixed seat; 11. Third receiving slot; 12. Avoidance slot; 13. Fourth receiving slot; 14. Arc slot; 2. Moving seat; 21. First receiving slot; 22. Second receiving slot; 23. Arc protrusion; 3. Cross roller guide; 31. First guide; 32. Second guide; 4. Linear motor; 41. Magnetic track; 42. Coil; 5. Optical feedback structure; 51. Encoder reader; 52. Grating ruler;

[0026] a-First direction. DETAILED DESCRIPTION

[0027] The present invention is further described in detail below in conjunction with the accompanying drawings and embodiments. It is to be understood that the specific embodiments described herein are only used to explain the present invention, rather than to limit the present invention. It should also be noted that, for ease of description, only the parts related to the present invention, rather than all structures, are shown in the accompanying drawings.

[0028] In the description of the present invention, unless otherwise clearly specified and limited, the terms "connected", "connected", and "fixed" 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 internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0029] In the present utility model, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0030] In the description of this embodiment, the terms "upper", "lower", "right", etc., are based on the directions or positions shown in the drawings, and are only for the convenience of description and simplified operation, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first" and "second" are only used to distinguish in the description and have no special meaning.

[0031] The utility model provides a mobile platform with high precision and small occupied space.

[0032] like Figure 1 to Figure 2 As shown, the movable platform includes a fixed seat 1, a movable seat 2, a cross roller guide 3 and a linear motor 4, the movable seat 2 is arranged above the fixed seat 1, and the movable seat 2 can move in an arc shape along a first direction a relative to the fixed seat 1; the cross roller guide 3 includes a first guide rail 31 and a second guide rail 32, the first guide rail 31 and the second guide rail 32 are both provided with an arc-shaped slide groove, and the arc-shaped openings of the arc-shaped slide groove are both facing the fixed seat 1 or the movable seat 2, one of the first guide rail 31 and the second guide rail 32 is fixedly connected to the fixed seat 1, and the other is fixedly connected to the movable seat 2; the linear motor 4 includes a magnetic rail 41 and a coil 42, the magnetic rail 41 is fixedly arranged on a side of the movable seat 2 facing the fixed seat 1, and the coil 42 is arranged on a side of the fixed seat 1 facing the movable seat 2, the coil 42 and the magnetic rail 41 are both arc-shaped structures, and the arc-shaped openings of the coil 42 and the magnetic rail 41 are oriented in the same direction as the arc-shaped opening of the arc-shaped slide groove to ensure that the coil 42 fits the magnetic rail 41.

[0033] The linear motor 4 includes a coil 42 and a magnetic rail 41, so that the magnetic rail 41 and the coil 42 cooperate with each other to enable the movable seat 2 to reciprocate relative to the fixed seat 1. Since the first guide rail 31 and the second guide rail 32 are both provided with arc-shaped slide grooves, the first guide rail 31 and the second guide rail 32 can enable the movable seat 2 to slide along an arc track relative to the fixed seat 1 when working, so that the objects set on the movable seat 2 can achieve arc-shaped movement. Since the linear motor 4 can ensure the movement accuracy of the movable seat 2, the accuracy of the movable seat 2 provided in this embodiment is improved compared with the prior art. At the same time, the linear motor 4 is arranged between the fixed seat 1 and the movable seat 2, which avoids the linear motor 4 occupying additional space, and the structure is more compact than the prior art.

[0034] It should be noted that the specific working principle of the linear motor 4 is prior art, so it will not be described here in detail.

[0035] In some embodiments, Figure 2 As shown, a first receiving groove 21 is provided on one side of the movable base 2 facing the fixed base 1 , and the magnetic track 41 is disposed in the first receiving groove 21 .

[0036] The provision of the first receiving groove 21 can further reduce the volume of the mobile station, thereby making the overall volume of the mobile station more compact.

[0037] In some embodiments, a second receiving groove 22 is disposed on a side of the movable base 2 facing the fixed base 1 , and one of the first guide rail 31 and the second guide rail 32 is disposed in the second receiving groove 22 .

[0038] The provision of the second receiving groove 22 can further reduce the height of the mobile platform, thereby making the overall volume of the mobile platform more compact.

[0039] Optionally, the first accommodating groove 21 is connected to the second accommodating groove 22. Such an arrangement can facilitate the installation of the linear motor 4. In addition, the first accommodating groove 21 is connected to the second accommodating groove 22, which can also ensure that the space of the first accommodating groove 21 is large enough to prevent interference when the movable seat 2 moves relative to the fixed seat 1.

[0040] In some embodiments, a third receiving groove 11 is disposed on a side of the fixed base 1 facing the movable base 2 , and the coil 42 is disposed in the third receiving groove 11 .

[0041] The provision of the third receiving groove 11 can also further reduce the height of the mobile platform, thereby making the overall volume of the mobile platform more compact.

[0042] In some embodiments, a side of the fixed seat 1 facing the movable seat 2 is further provided with an avoidance groove 12 , and a third accommodating groove 11 is provided at the bottom of the avoidance groove 12 .

[0043] The bottom surface of the avoidance groove 12 is an arc-shaped surface, which is the same as the moving track of the moving seat 2, so that the moving seat 2 can be prevented from being interfered by the fixed seat 1 during the movement process, and the smoothness of the movement of the moving seat 2 can be further improved.

[0044] In some embodiments, a fourth receiving groove 13 is provided on one side of the fixed base 1 facing the movable base 2, and the other of the first guide rail 31 and the second guide rail 32 is provided in the fourth receiving groove 13. The provision of the fourth receiving groove 13 can reduce the height of the movable platform, thereby reducing the gap between the movable base 2 and the fixed base 1, which not only makes the movable platform more compact, but also makes the movable platform more stable during movement. For example, the first guide rail 31 is provided in the second receiving groove 22, and the second guide rail 32 is provided in the fourth receiving groove 13.

[0045] In order to improve the accuracy of the moving stage, in some embodiments, the moving stage further includes an optical feedback structure 5, which can identify the rotation angle of the moving base 2. In this way, the movement of the moving base 2 can be controlled according to the rotation angle.

[0046] Further, continue to refer to Figure 2 The optical feedback structure 5 includes an encoder head 51 and a grating ruler 52. The encoder head 51 is fixedly arranged at one end of the fixed seat 1, and the grating ruler 52 is arranged at one end of the movable seat 2, and the encoder head 51 cooperates with the grating ruler 52. The encoder head 51 can move relative to the grating ruler 52, and the encoder head 51 and the grating ruler 52 cooperate with each other to realize the precise control of the rotation angle of the movable seat 2.

[0047] It should be noted that the encoder head 51 and the linear motor 4 are both electrically connected to the controller, and then the controller can control the linear motor 4 to work after the angle required to be rotated is manually input, and the encoder head 51 stops working after reaching the corresponding position. In this embodiment, the controller can be a centralized or distributed controller, for example, the controller can be a single microcontroller, or it can be composed of multiple distributed microcontrollers, and the control program can be run in the microcontroller to control each component to realize its function.

[0048] Since the overall structure of the mobile platform is relatively compact, the fixed seat 1 will interfere with the mobile seat 2 during the movement of the mobile seat 2 relative to the fixed seat 1. For this reason, the mobile seat 2 is provided with an arc-shaped protrusion 23 facing the bottom surface of the fixed seat 1. The bottom surface of the arc-shaped protrusion 23 is an arc-shaped surface. The two ends of the top of the fixed seat 1 are provided with an arc-shaped groove 14 that cooperates with the arc-shaped protrusion 23. The arc-shaped protrusion 23 can extend into the space formed by the arc-shaped groove 14 and swing along the first direction a in the arc-shaped groove 14. It should be noted that the diameter of the trajectory circle where the arc-shaped working surface of the arc-shaped protrusion 23 is located is the same as the diameter of the trajectory circle where the arc-shaped groove 14 is located, so that the arc-shaped protrusion 23 always maintains a certain distance from the arc-shaped groove 14 during the movement.

[0049] In addition, the above are only preferred embodiments of the present invention and the technical principles used. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and that various obvious changes, readjustments and substitutions can be made by those skilled in the art without departing from the scope of protection of the present invention. Therefore, although the present invention is described in more detail through the above embodiments, the present invention is not limited to the above embodiments, and may include more other equivalent embodiments without departing from the concept of the present invention, and the scope of the present invention is determined by the scope of the appended claims.

Claims

1. Mobile station, It is characterized in that include: A fixed seat (1) and a movable seat (2), wherein the movable seat (2) is arranged above the fixed seat (1), and the movable seat (2) is capable of moving in an arc shape along a first direction relative to the fixed seat (1); A cross roller guide rail (3), the cross roller guide rail (3) comprising a first guide rail (31) and a second guide rail (32), the first guide rail (31) and the second guide rail (32) are both provided with an arc-shaped slide groove, the arc-shaped openings of the arc-shaped slide grooves are both oriented toward the fixed seat (1) or the movable seat (2), one of the first guide rail (31) and the second guide rail (32) is fixedly connected to the fixed seat (1), and the other is fixedly connected to the movable seat (2); A linear motor (4), the linear motor (4) comprising a magnetic track (41) and a coil (42), the magnetic track (41) being fixedly arranged on a side of the movable seat (2) facing the fixed seat (1), the coil (42) being arranged on a side of the fixed seat (1) facing the movable seat (2), the coil (42) and the magnetic track (41) both being arc-shaped structures, and the arc-shaped openings of the coil (42) and the magnetic track (41) being oriented in the same direction as the arc-shaped opening of the arc-shaped slide groove.

2. The mobile station according to claim 1, It is characterized in that A first accommodating groove (21) is provided on one side of the movable seat (2) facing the fixed seat (1), and the magnetic track (41) is arranged in the first accommodating groove (21).

3. The mobile station according to claim 2, It is characterized in that A second accommodating groove (22) is provided on one side of the movable seat (2) facing the fixed seat (1), and one of the first guide rail (31) and the second guide rail (32) is arranged in the second accommodating groove (22).

4. The mobile station according to claim 3, It is characterized in that The first containing groove (21) is communicated with the second containing groove (22).

5. The mobile station according to claim 1, It is characterized in that A third accommodating groove (11) is provided on one side of the fixed seat (1) facing the movable seat (2), and the coil (42) is arranged in the third accommodating groove (11).

6. The mobile station according to claim 5, It is characterized in that A side of the fixed seat (1) facing the movable seat (2) is also provided with an escape groove (12), and the bottom of the escape groove (12) is provided with the third accommodating groove (11).

7. The mobile station according to claim 6, It is characterized in that A fourth accommodating groove (13) is provided on one side of the fixed seat (1) facing the movable seat (2), and the other of the first guide rail (31) and the second guide rail (32) is arranged in the fourth accommodating groove (13).

8. The mobile station according to claim 1, It is characterized in that It also comprises an optical feedback structure (5), wherein the optical feedback structure (5) is capable of identifying the rotation angle of the moving seat (2).

9. The mobile station according to claim 8, It is characterized in that The optical feedback structure (5) comprises an encoder head (51) and a grating ruler (52), wherein the encoder head (51) is fixedly arranged at one end of the fixed seat (1), and the grating ruler (52) is arranged at one end of the movable seat (2), and the encoder head (51) cooperates with the grating ruler (52).

10. The mobile station according to claim 1, It is characterized in that The movable seat (2) is provided with an arc-shaped protrusion (23) protruding toward the bottom surface of the fixed seat (1); the bottom surface of the arc-shaped protrusion (23) is an arc-shaped surface; arc-shaped grooves (14) cooperating with the arc-shaped protrusion (23) are provided at both ends of the top of the fixed seat (1); the diameter of the trajectory circle where the arc-shaped working surface of the arc-shaped protrusion (23) is located is the same as the diameter of the trajectory circle where the arc-shaped groove (14) is located; the arc-shaped protrusion (23) can extend into the space formed by the arc-shaped groove (14) and swing in the arc-shaped groove (14) along a first direction.

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