Driving platform

Abstract

The utility model discloses a driving platform which comprises a base, a linear motor, a transmission mechanism and a movable platform, a floating island and two bosses are arranged on the base, and the floating island is located between the two bosses; the linear motor is mounted on one side of the boss; the transmission mechanism is mounted on the boss and the linear motor; and the mobile platform is mounted on the transmission mechanism. According to the driving platform, the transmission mechanism can be driven through the linear motor, the linear motor adopts an electromagnetic driving mode, compared with a servo motor and a lead screw in the prior art, the driving mode has no mechanical gap and transmission error, and the driving accuracy is improved; the limiting plate which reciprocates along with the movable platform is limited through the limiting groove in the limiting block, so that the driving accuracy is ensured; and the position of the mobile platform is positioned through a grating encoder and a grating ruler, so that the mobile platform and the floating island can form working platforms with different radiuses.

Description

Technical Field

[0001] The utility model belongs to the technical field of drive equipment, and in particular relates to a drive platform. Background Art

[0002] In the field of drive equipment technology, drive platforms are currently widely used. Existing drive platforms are generally driven by servo motors and lead screws. This drive method results in transmission errors due to mechanical clearance between the mating positions of the transmission mechanism. Furthermore, the lead screw experiences prolonged frictional contact with the transmission mechanism during the drive process, further increasing the transmission error and preventing precise driving.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as an admission or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. Utility Model Content

[0004] The purpose of the utility model is to provide a driving platform, which can solve the technical problems of large transmission error and low driving precision of the existing driving platform.

[0005] In order to achieve the above-mentioned purpose, a specific embodiment of the present invention provides a driving platform, including a base, a linear motor, a transmission mechanism and a mobile platform, wherein:

[0006] The base is provided with a floating island and two bosses, and the floating island is located between the two bosses;

[0007] The linear motor is mounted on the base and located on one side of the boss;

[0008] The transmission mechanism is installed on the boss and the linear motor;

[0009] The mobile platform is installed on the transmission mechanism.

[0010] In one or more embodiments of the present invention, the linear motor includes a mover and a stator, wherein:

[0011] The stator is mounted on the base along a first direction and is located on a side of the boss away from the floating island, wherein the first direction is the length direction of the boss;

[0012] The lower end of the mover is located in the stator, and the upper end of the mover is fixedly installed with the transmission mechanism.

[0013] In one or more embodiments of the present invention, the transmission mechanism includes a slide rail and a slider, wherein:

[0014] The slide rail is mounted on the boss along a first direction, the slider is slidably mounted on the slide rail, and the movable platform is fixedly mounted on the slider and the mover.

[0015] In one or more embodiments of the present invention, an end plate is installed on at least one end of the slide rail.

[0016] In one or more embodiments of the present invention, the driving platform further comprises a limiting mechanism, and the limiting mechanism comprises a limiting block and a limiting plate, wherein:

[0017] The limit block is installed on the boss and close to the side of the floating island, and a limit groove is provided on the limit block;

[0018] The limiting plate is installed below the moving platform. When the moving platform drives the limiting plate to move back and forth, the limiting plate passes through the limiting slot.

[0019] In one or more embodiments of the present invention, the limiting mechanism further includes a first mounting plate and a second mounting plate, wherein:

[0020] The second mounting plate is mounted on a side of the boss close to the floating island, the first mounting plate is mounted on a side of the second mounting plate close to the floating island, and the limit block is mounted on the first mounting plate.

[0021] In one or more embodiments of the present invention, at least three groups of limit blocks are installed, and each group of limit blocks is on the boss along the first direction. When the movable platform drives the limit plate to reciprocate, the limit plate passes through the limit slot of each group of limit blocks in turn.

[0022] In one or more embodiments of the present invention, the driving platform further comprises a measuring mechanism, and the measuring mechanism comprises a grating encoder and a grating ruler, wherein:

[0023] The grating encoder is installed below the moving platform, and the grating ruler is installed on a side of the boss close to the grating encoder.

[0024] In one or more embodiments of the present invention, the measuring mechanism further includes a third mounting plate, the third mounting plate is mounted below the moving platform, and the grating encoder is mounted on the third mounting plate.

[0025] In one or more embodiments of the present invention, a connecting plate is provided between the mobile platform and the base.

[0026] Compared with the existing technology, the drive platform in the utility model can drive the transmission mechanism through a linear motor. The linear motor adopts an electromagnetic drive mode. Compared with the servo motor and lead screw in the existing technology, this drive mode has no mechanical gap and transmission error, thereby improving the drive accuracy.

[0027] The utility model also limits the limit plate that reciprocates with the mobile platform through the limit groove on the limit block to ensure the accuracy of driving;

[0028] The utility model also locates the position of the mobile platform through a grating encoder and a grating ruler, so that the mobile platform and the floating island can form working platforms with different radii. BRIEF DESCRIPTION OF THE DRAWINGS

[0029] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for the embodiments or the description of the prior art. Obviously, the drawings described below are only some of the embodiments described in the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without inventive efforts.

[0030] Figure 1 This is a structural diagram of a driving platform in a specific embodiment of the present utility model;

[0031] Figure 2 This is a structural diagram of a base in a specific embodiment of the present utility model;

[0032] Figure 3 This is a top view of the driving mechanism in a specific embodiment of the present utility model;

[0033] Figure 4 This is a structural diagram of a transmission mechanism in a specific embodiment of the present utility model;

[0034] Figure 5 This is a cross-sectional structural diagram of a limiting mechanism in a specific embodiment of the present utility model;

[0035] Figure 6 It is a front view of a measuring mechanism in a specific embodiment of the utility model.

[0036] Explanation of main figure marks: 1. Base, 11. Boss, 2. Driving mechanism, 21. Mover, 22. Stator, 3. Transmission mechanism, 31. Slide rail, 32. Slider, 33. End plate, 4. Floating island, 5. Limiting mechanism, 51. Limiting block, 511. Limiting groove, 52. Limiting plate, 53. First mounting plate, 54. Second mounting plate, 6. Measuring mechanism, 61. Grating encoder, 62. Grating ruler, 63. Third mounting plate, 7. Connecting plate, 8. Moving platform. DETAILED DESCRIPTION

[0037] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the following will provide a clear and complete description of the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only a portion of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative work should fall within the scope of protection of the present invention.

[0038] In the description of the present invention, it should be understood that the terms "vertical", "horizontal", "top", "bottom", "up", "down", "front", "back", etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0039] Ginseng Figure 1 As shown, the driving platform in a specific embodiment of the present invention includes: a base 1, a linear motor 2, a transmission mechanism 3, a floating island 4, a limiting mechanism 5, a measuring mechanism 6, a connecting plate 7 and a moving platform 8, wherein:

[0040] Ginseng Figure 2 As shown, the base 1 is made of marble, and a floating island 4 and two groups of bosses 11 are provided on the base 1. The floating island 4 is located between the two groups of bosses 11. The linear motor 2 is installed on the base 1 and is located on one side of the boss 11. In this embodiment, the linear motor 2 is installed on the side of the boss 11 away from the floating island 4, the transmission mechanism 3 is installed above the boss 11 and the linear motor 2, and the movable platform 8 is installed on the transmission mechanism 3.

[0041] The linear motor 2 drives the mobile platform 8 to perform reciprocating motion on the boss 11 through the transmission mechanism 3. The mobile platform 8 and the floating island 4 form a workbench with a variable radius, which has a wider range of applications.

[0042] Ginseng Figure 3 As shown, in this embodiment, the linear motor 2 includes a mover 21 and a stator 22, wherein:

[0043] The stator 22 is installed on the base along a first direction and is located on the side of the boss 11 away from the floating island 4. The first direction is the length direction of the boss 11. The lower end of the mover 21 is located in the stator 22, and the upper end of the mover 21 is fixedly installed with the transmission mechanism 3.

[0044] After the linear motor 2 is powered on, the mover 21 starts to move under the action of the magnetic field force, and the mover 21 drives the mobile platform 8 to reciprocate along the first direction on the transmission mechanism 3. Compared with the transmission method of the servo motor and the lead screw in the prior art, this transmission method does not have mechanical clearance and transmission error, ensuring that the linear motor 2 can accurately drive the mobile platform 8.

[0045] Ginseng Figures 4 and 5 As shown, in this embodiment, the transmission mechanism 3 includes a slide rail 31 and a slider 32, wherein:

[0046] The slide rail 31 is installed on the boss 11 along the first direction, the slider 32 is slidably installed on the slide rail 31, the mobile platform 8 is fixedly installed on the slider 32 and the mover 21, and end plates 34 are provided at both ends of the slide rail 31 to limit the movement of the mobile platform 8 on the slide rail 31.

[0047] In order to further improve the accuracy of the linear motor 2 driving the mobile platform 8, the driving platform also includes a limiting mechanism 5, which includes a limiting block 51 and a limiting plate 52, wherein:

[0048] The limit block 51 is installed on the boss 11 and close to the side of the floating island 4. A limit groove 511 is provided on the limit block 51; the limit plate 52 is installed under the mobile platform 8. When the mobile platform 8 drives the limit plate 52 to reciprocate, the limit plate 52 passes through the limit groove 511.

[0049] When the mover 21 drives the mobile platform 8 to reciprocate on the slide rail 31, the limit plate 52 installed on the mobile platform 8 will also reciprocate. By setting the limit block 51 and opening a limit groove 511 on the limit block 51, the reciprocating motion of the limit block 51 is limited, ensuring that the limit plate 52 can pass through the limit groove 511 every time it passes through the limit block 51, thereby ensuring the accuracy of the movement of the mobile platform 8 on the slide rail 31.

[0050] In this embodiment, the limiting mechanism 5 further includes a first mounting plate 53 and a second mounting plate 54, wherein:

[0051] The second mounting plate 54 is mounted on the side of the boss 11 near the floating island 4. The first mounting plate 53 is mounted on the side of the second mounting plate 54 near the floating island 4. The limit blocks 51 are mounted on the first mounting plate 53. At least three sets of limit blocks 51 are installed, with each set of limit blocks 51 being installed on the boss 11 at intervals along the first direction. When the movable platform 8 drives the limit plates 52 to reciprocate, the limit plates 52 sequentially pass through the limit slots 511 of each set of limit blocks 51.

[0052] Ginseng Figure 6As shown, to obtain the position of the movable platform 8 relative to the base 1, the driving platform further includes a measuring mechanism 6, which includes a grating encoder 61 and a grating ruler 62. The grating encoder 61 is mounted below the movable platform 8, and the grating ruler 62 is mounted on the side of the boss 11 near the grating encoder 61. The measuring mechanism 6 also includes a third mounting plate 63, which is mounted below the movable platform 8. The grating encoder 61 is mounted on the third mounting plate 63. The center plane of the grating encoder 61 in the first direction is coplanar with the center plane of the movable platform 8 in the first direction.

[0053] When the host computer controls the linear motor 2 to drive the mobile platform 8 to move, the real-time position of the mobile platform 8 is obtained through the grating encoder 61 and the grating ruler 62 to obtain workbenches with different radii.

[0054] In this embodiment, the linear motor 2 can also be installed on the base 1 and located on the side of the boss 11 close to the floating island 4, wherein the stator 22 is installed on the base 1 along the first direction and located on the side of the boss 11 close to the floating island 4, and the first direction is the length direction of the boss 11; the lower end of the mover 21 is located in the stator 22, and the upper end of the mover 21 is fixedly installed with the transmission mechanism 3.

[0055] Corresponding to the linear motor 2 being installed on the side close to the floating island 4 , the limiting mechanism 5 and the measuring mechanism 6 are installed on the side of the boss 11 away from the floating island 4 .

[0056] The limiting mechanism 5 includes a limiting block 51, a limiting plate 52, a first mounting plate 53 and a second mounting plate 54, wherein:

[0057] The second mounting plate 54 is installed on the side of the boss 11 away from the floating island 4, the first mounting plate 53 is installed on the side of the second mounting plate 54 away from the floating island 4, the limit block 51 is installed on the end face of the first mounting plate 53, and a limit groove 511 is provided on the limit block 51 along the first direction. The upper end of the limit plate 52 is installed on the bottom of the mobile platform 8. When the mobile platform 8 reciprocates, the lower end of the limit plate 52 passes through the limit groove 511.

[0058] When the linear motor 2 located on the side of the boss 11 close to the floating island 4 is powered on, the mover 21 and the stator 22 cooperate with each other so that the mover 21 reciprocates on the stator 22 along the first direction under the action of the magnetic field force. The mover 21 is fixedly installed on the movable platform 8, and the movable platform 8 is also installed on the slide rail 31 through the slider 32. Therefore, the mover 21 drives the movable platform 8 to reciprocate along the first direction on the slide rail 31. The limit plate 52 fixedly installed on the movable platform 8, its lower end passes through the limit groove 511 during the reciprocating motion. In this embodiment, there are at least three groups of limit blocks 51, which are installed on the side of the boss 11 away from the floating platform 4 along the first direction. The limit blocks 51 pass through the limit grooves 511 on all limit blocks 51 during the reciprocating motion to ensure that the movable platform 8 moves accurately on the slide rail 31.

[0059] The measuring mechanism 6 includes a grating encoder 61, a grating ruler 62 and a third mounting plate 63, wherein:

[0060] The third mounting plate 63 is installed below the movable platform 8 and away from the side of the floating island 4. The grating encoder 61 is installed on the third mounting plate 63. The center plane of the grating encoder 61 in the first direction is coplanar with the center plane of the movable platform 8 in the first direction. The grating scale 62 is installed on the side of the boss 11 close to the grating encoder 61.

[0061] When the mobile platform 8 is driven to reciprocate along the first direction by the linear motor 2, since the grating encoder 61 is at the center position of the mobile platform 8 along the first direction, the position of the grating encoder 61 can reflect the position of the mobile platform 8. Therefore, the actual position of the mobile platform 8 on the slide rail 31 is measured by the grating encoder 61 and the grating ruler 62, thereby cooperating with the floating island 4 to form a workbench with different radii.

[0062] In this embodiment, a connecting plate 7 is further provided between the mobile platform 8 and the base 1. The connecting plate 7 is used to drive the platform during transportation to ensure that the mobile platform 8 is not offset or damaged due to transportation. When it is necessary to start the linear motor 2 to drive the mobile platform, the connecting plate 7 is removed.

[0063] The driving platform in the present invention can drive the transmission mechanism 3 through the linear motor 2. The linear motor 2 adopts an electromagnetic driving method. Compared with the servo motor and the lead screw in the prior art, this driving method does not have mechanical clearance and transmission error, thereby improving the driving accuracy; the limiting groove 511 on the limiting block 51 limits the limiting plate 52 that reciprocates with the mobile platform 8 to ensure the driving accuracy; the position of the mobile platform is also positioned by the grating encoder 61 and the grating ruler 62, so that the mobile platform 8 and the floating island 4 can form working platforms with different radii.

[0064] It will be apparent to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above and that the present invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the present invention. Therefore, the embodiments should be considered in all respects as illustrative and non-restrictive, and the scope of the present invention is defined by the appended claims, not the foregoing description, and all variations coming within the meaning and range of equivalents of the claims are intended to be included within the present invention. Any reference signs in the claims should not be construed as limiting the claim to which they relate.

[0065] In addition, it should be understood that although this specification is described in terms of implementation methods, not every implementation method contains only one independent technical solution. This narrative method of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment can also be appropriately combined to form other implementation methods that can be understood by those skilled in the art.

Claims

1. A driving platform, characterized in that: It includes a base, a linear motor, a transmission mechanism and a mobile platform, among which: The base is provided with a floating island and two bosses, and the floating island is located between the two bosses; The linear motor is mounted on the base and located on one side of the boss; The transmission mechanism is installed on the boss and the linear motor; The mobile platform is installed on the transmission mechanism.

2. The driving platform according to claim 1, characterized in that: The linear motor includes a mover and a stator, wherein: The stator is mounted on the base along a first direction and is located on a side of the boss away from the floating island, wherein the first direction is the length direction of the boss; The lower end of the mover is located in the stator, and the upper end of the mover is fixedly installed with the transmission mechanism.

3. The driving platform according to claim 2, characterized in that: The transmission mechanism includes a slide rail and a slider, wherein: The slide rail is mounted on the boss along a first direction, the slider is slidably mounted on the slide rail, and the movable platform is fixedly mounted on the slider and the mover.

4. The driving platform according to claim 3, characterized in that: An end plate is installed on at least one end of the slide rail.

5. The driving platform according to claim 2, characterized in that: The driving platform further includes a limiting mechanism, which includes a limiting block and a limiting plate, wherein: The limit block is installed on the boss and close to the side of the floating island, and a limit groove is provided on the limit block; The limiting plate is installed below the moving platform. When the moving platform drives the limiting plate to move back and forth, the limiting plate passes through the limiting slot.

6. The driving platform according to claim 5, characterized in that: The limiting mechanism further includes a first mounting plate and a second mounting plate, wherein: The second mounting plate is mounted on a side of the boss close to the floating island, the first mounting plate is mounted on a side of the second mounting plate close to the floating island, and the limit block is mounted on the first mounting plate.

7. The driving platform according to claim 5, characterized in that: At least three groups of limit blocks are installed, and each group of limit blocks is on the boss along the first direction. When the movable platform drives the limit plate to reciprocate, the limit plate passes through the limit slots of each group of limit blocks in sequence.

8. The driving platform according to claim 2, characterized in that: The driving platform also includes a measuring mechanism, which includes a grating encoder and a grating ruler, wherein: The grating encoder is installed below the moving platform, and the grating ruler is installed on a side of the boss close to the grating encoder.

9. The driving platform according to claim 8, characterized in that: The measuring mechanism further includes a third mounting plate, which is mounted below the moving platform, and the grating encoder is mounted on the third mounting plate.

10. The driving platform according to claim 1, characterized in that: A connecting plate is provided between the mobile platform and the base.

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