Double-drive motion platform based on ultra-high-speed linear motor

Abstract

The invention relates to the technical field of driving devices, and discloses a double-drive motion platform based on an ultrahigh-speed linear motor, the double-drive motion platform comprises two groups of transverse platforms and a longitudinal platform, a mounting space is formed between the two groups of transverse platforms, and the two ends of the longitudinal platform synchronously move on the two groups of transverse platforms respectively; each group of transverse platform comprises a bracket, a base and a grating strip; the side, away from the installation space, of the support is provided with an operation cavity penetrating through the upper surface of the support. The grating strip is installed on the base, and the base moves on the support and has a first state and a second state opposite to the base. The longitudinal stage has a grating read head for opposing the grating bar. The application can reduce the adverse effect of the grating strip on the operation stability of the equipment.

Description

Technical Field

[0001] The present application relates to the technical field of drive devices, and in particular to a dual-drive motion platform based on ultra-high-speed linear motors. Background Art

[0002] At present, in the 3C electronics, semiconductor, LED packaging and other industries, as products become smaller and smaller, the requirements for dispensing speed and accuracy are getting higher and higher. Figure 1 and Figure 2 When the existing glue dispensing machine is used, the workpiece is transported to the glue dispensing machine through the conveying track, and then the glue dispensing device 3 is driven by the dual-drive gantry structure to dispense glue on the workpiece. The dual-drive gantry structure generally includes a transverse platform 1 and a longitudinal platform 2. The transverse platform 1 has two and is respectively erected on opposite sides of the glue dispensing machine frame. The two ends of the longitudinal platform 2 are respectively moved on the two transverse platforms 1 along the length direction of the transverse platform 1, and the glue dispensing device 3 is moved on the longitudinal platform 2 along the length direction of the longitudinal platform 2.

[0003] Among them, the movement of the longitudinal platform 2 on the transverse platform 1 and the movement of the dispensing device 3 on the transverse platform 1 are both realized by the linear motor 22. In order to improve the synchronization and accuracy of the two ends of the longitudinal platform 2 under ultra-high-speed movement, the transverse platform 1 has a grating bar 4, and the longitudinal platform 2 has a grating reading head 5 opposite to the grating bar 4. The grating reading head 5 reads the feedback of the grating bar 4 to provide feedback of the current position to the linear motor 22.

[0004] After the device has been used for a period of time, the surface of the grating strip 4 may be contaminated with dust, resulting in failure of the grating reading head 5 to read, and the grating strip 4 needs to be cleaned. However, the grating strip 4 is usually installed on the side of the longitudinal platform 2 close to the inside of the frame to improve the compactness of the equipment parts. When the frame shell is removed to clean the grating strip 4, the cleaning tool needs to be inserted into the frame, which is not only easy to interfere with other parts in the frame, but also easy to be difficult to observe the cleaning effect of the grating strip 4 because the grating strip 4 is on the inner side of the longitudinal platform 2, resulting in the cleaning effect of the grating strip 4 not meeting expectations, affecting the stability of the use of the device. Summary of the invention

[0005] In order to reduce the adverse effects of grating bars on the operating stability of the equipment, the present application provides a dual-drive motion platform based on an ultra-high-speed linear motor.

[0006] The present application provides a dual-drive motion platform based on an ultra-high-speed linear motor, which adopts the following technical solutions: A dual-drive motion platform based on an ultra-high-speed linear motor, comprising: a transverse platform and a longitudinal platform, wherein the transverse platforms have two groups, an installation space is provided between the two groups of transverse platforms, and the two ends of the longitudinal platform are respectively and synchronously moved on the two groups of transverse platforms; each group of the transverse platforms comprises a bracket, a base and a grating bar; the bracket is used to support the longitudinal platform, and the side of the bracket away from the installation space has an operating cavity penetrating the upper surface of the bracket; the grating bar is installed on the base, and the base moves on the bracket and has a first state and a second state relative to itself; the longitudinal platform has a grating reading head for being opposite to the grating bar; The first state is characterized by the base being close to the side of the bracket facing the installation space, and the grating bar facing the installation space and opposite to the installation space; the second state is characterized by the base being close to the side of the bracket away from the installation space, and the base is flipped relative to the first state, so that the surface of the grating bar is set upward, and the grating bar is located in the operating cavity.

[0007] By adopting the above technical solution, the base can be flipped to allow the grating bar to flip from a position close to the inside of the frame to a position outside that is easy to observe and clean. This not only makes it difficult to interfere with other parts in the frame during cleaning, but also improves the convenience and cleaning effect of the grating bar cleaning, thereby improving the stability and accuracy of the equipment and reducing the adverse effects of the grating bar on the stability of equipment operation.

[0008] Optionally, the bracket has an active cavity for the base to slide along the distribution direction of the two groups of transverse platforms, the active cavity is connected to the operating cavity, and the bracket has a limit piece in the inner wall of the active cavity; the base is provided with a moving handle at the end along the sliding direction of the longitudinal platform, the limit piece is inserted into the moving handle and moves in the moving handle along the sliding direction of the base, and when the base moves to the point where the grating bar is relative to the operating cavity, the moving handle can rotate relative to the limit piece to drive the base to the second state.

[0009] By adopting the above technical solution, the movement of the base is guided by the cooperation between the moving handle and the limiting member.

[0010] Optionally, the position-limiting member comprises a first section and a second section sequentially connected along the moving direction of the longitudinal platform, the first section is connected between the second section and the inner wall of the bracket, and the outer periphery of the second section exceeds the outer periphery of the first section; The moving handle includes a rotating section and a limiting section connected in sequence along a direction away from the base; the limiting section has a first sliding groove for the first section to move along the sliding direction of the base, and the rotating section and the limiting section both have a second sliding groove for the second section to move along the sliding direction of the base, and the first sliding groove is connected to the second sliding groove; and when the first section is separated from the first sliding groove and the second section enters the second sliding groove in the rotating section, the rotating section can rotate relative to the second section to drive the base to move to the second state.

[0011] By adopting the above technical solution and setting the limiter and the moving handle, the base can move and rotate smoothly and accurately during the flipping process, and the base is not prone to jamming or misalignment during the flipping process.

[0012] Optionally, a side of the first section facing away from the installation space has a chamfer.

[0013] By adopting the above technical solution, the chamfer of the first section can guide the sliding and plug-in cooperation between the first sliding groove and the limiting section when the base moves from the second state to the first state.

[0014] Optionally, the bracket is provided with a blocking portion on the inner wall of the movable cavity, and when the base is in the first state, the side of the base close to the installation space abuts against the blocking portion to limit the base from continuing to move toward the installation space.

[0015] By adopting the above technical solution, when the base is in the first state, the blocking portion can limit the base from continuing to move toward the installation space, thereby improving the stability of the base in the normal working position.

[0016] Optionally, when the base is in the first state, the bracket is detachably connected with a positioning member for pressing against a side of the base facing away from the installation space.

[0017] By adopting the above technical solution, when the base is in the first state, the detachably connected positioning member presses against the side of the base away from the installation space, thereby further enhancing the stability and reliability of the base in the working position.

[0018] Optionally, the bracket has a accommodating cavity connected to the movable cavity on the side facing away from the installation space, and when the base is in the second state, the movable handle enters the accommodating cavity; and the bracket has a plug-in groove on the bottom wall of the accommodating cavity, and when the base is in the second state, the movable handle can move downward relative to the limit member and be inserted into the plug-in groove.

[0019] By adopting the above technical solution, when the base is in the second state, the movable handle can enter the accommodating cavity and move downward relative to the limiting member to be inserted into the plug-in slot, thereby further fixing the position of the base after flipping and avoiding movement or flipping of the base during cleaning.

[0020] Optionally, an auxiliary mounting piece is detachably connected to the longitudinal platform, and when the base is in the second state, the auxiliary mounting piece can guide the mounting of the grating strips.

[0021] Optionally, the auxiliary mounting member includes a connecting frame, a mounting seat and a pressure wheel; the connecting frame is detachably connected to the longitudinal platform; the mounting seat is connected to the connecting frame, the mounting seat forms a limited position cavity, and the pressure wheel is rotatably connected to the mounting seat and is located in the limited position cavity; When the base is in the second state, the pressure wheel can abut against the upper surface of the grating bar, and at the same time, the grating bar enters the limiting cavity, and the opposite sides of the grating bar abut against the opposite inner walls of the mounting seat respectively.

[0022] By adopting the above technical solution, the base can disassemble and assemble the grating strip when it is in the second state. When installing the grating strip, the pressure wheel and the mounting base can limit the grating strip to the installation position, thereby improving the convenience of pasting the grating strip.

[0023] In summary, the present application includes at least one of the following beneficial effects: 1. The grating strip is driven to change its position by flipping the base. When the base is in the first state, the grating strip works relative to the grating reading head. Since the surface of the grating strip faces the installation space, dust accumulation on the surface of the grating strip can be reduced. When the base is in the second state, the surface of the grating strip is set upward, so that the operator can observe and clean the surface of the grating strip, improve the convenience and cleaning effect of cleaning the grating strip, thereby effectively extending the service life of the equipment and improving the overall performance of the equipment.

[0024] 2. The movement of the base is stably guided by the cooperation of the limiter and the moving handle, so that the grating strips are not easily bumped or dislocated during the movement of the base. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of a dispensing machine in the related art; Figure 2 It is a schematic diagram of the internal structure of the dispensing machine after the outer shell is hidden; Figure 3 It is a schematic diagram of the structure of an embodiment of the present application; Figure 4is a front view of the side of the transverse platform away from the installation space when the base is in the first state in the embodiment of the present application; Figure 5 yes Figure 4 Sectional view at AA in the middle; Figure 6 yes Figure 5 A schematic diagram of the enlarged structure at B in the middle; Figure 7 is a schematic diagram of the structure of the base in the embodiment of the present application when it is in the first state and cooperates with the limiting member; Figure 8 is a schematic diagram of the explosion structure of the base and the limiter in the embodiment of the present application; Fig. 9 yes Figure 4 Sectional perspective view at CC in the middle; Fig.10 yes Fig. 9 Schematic diagram of the enlarged structure at D in the middle; Fig.11 yes Fig. 9 A schematic diagram of the structure when the middle base moves to the second state; Fig.12 yes Fig.11 Schematic diagram of the enlarged structure at E in the middle; Fig.13 is a schematic diagram of the structure when the base is in the second state in the embodiment of the present application; Fig.14 yes Fig.13 Schematic diagram of the enlarged structure at F in the middle.

[0026] Explanation of the reference numerals in the accompanying drawings: 1. Horizontal platform; 2. Longitudinal platform; 3. Glue dispensing device; 4. Grating strip; 5. Grating reading head; 6. Installation space; 7. Bracket; 8. Base; 9. Operating cavity; 10. Movable cavity; 11. Limiting member; 111. First section; 112. Second section; 12. Moving handle; 121. Rotating section; 122. Limiting section; 13. First slide groove; 14. Second slide groove; 15. Blocking part; 16. Positioning member; 17. Accommodating cavity; 18. Plug-in slot; 19. Auxiliary mounting member; 191. Connecting frame; 192. Mounting seat; 193. Pressure wheel; 20. Limiting cavity; 22. Linear motor; 23. Connecting piece. DETAILED DESCRIPTION

[0027] The following combination Figures 3 to 14 This application is described in further detail.

[0028] The present application embodiment discloses a dual-drive motion platform based on an ultra-high-speed linear motor. Figure 3A dual-drive motion platform based on an ultra-high-speed linear motor includes a transverse platform 1 and a longitudinal platform 2. The transverse platform 1 has two groups and is parallel to each other, and an installation space 6 is formed between the two groups of transverse platforms 1. The longitudinal platform 2 has one group, and the two ends of the longitudinal platform 2 that are far away from each other slide on the two groups of transverse platforms 1 respectively through linear motors 22. The sliding direction of the longitudinal platform 2 is parallel to the length extension direction of the transverse platform 1 and perpendicular to the distribution direction of the two groups of transverse platforms 1, and the two ends of the longitudinal platform 2 sliding on the transverse platform 1 move synchronously. A glue dispensing device (not shown in the figure) is provided on the longitudinal platform 2 to slide along the length direction perpendicular to the transverse platform 1 through the linear motor 22.

[0029] Specifically, both ends of the longitudinal platforms 2 that are far away from each other are detachably connected with grating reading heads 5 through bolts, and the reading windows of the grating reading heads 5 at both ends of the longitudinal platforms 2 are respectively facing the opposite sides of the two groups of longitudinal platforms 2.

[0030] Reference Figure 3 and Figure 4 Each set of transverse platforms 1 includes a bracket 7, a base 8 and a grating strip 4. The side of the bracket 7 close to the installation space 6 is opposite to the grating reading head 5, and the part of the bracket 7 relative to the grating reading head 5 is in the shape of a long strip extending in the horizontal direction, and the linear motor 22 connected to the longitudinal platform 2 is installed on the upper surface of the bracket 7.

[0031] Reference Figure 4 and Figure 5 More specifically, an active cavity 10 is provided at the portion of the bracket 7 opposite to the grating reading head 5. The active cavity 10 penetrates the opposite sides of the bracket 7 along the distribution direction of the two groups of lateral platforms 1, and the active cavity 10 extends along the length direction of the bracket 7; an operating cavity 9 is provided at the side of the bracket 7 away from the installation space 6. The operating cavity 9 penetrates the upper surface of the bracket 7 upward from the active cavity 10, and the operating cavity 9 penetrates the side of the bracket 7 away from the installation space 6, and the length extension direction of the operating cavity 9 is consistent with that of the active cavity 10; at the same time, an accommodating cavity 17 is provided at the side of the bracket 7 away from the installation space 6, and the accommodating cavity 17 has two accommodating cavities, which are distributed along the length extension direction of the bracket 7, and the two accommodating cavities 17 extend upward to be connected with the active cavity 10.

[0032] Reference Figure 5 and Figure 6 The base 8 is in the shape of a rectangular strip extending along the length direction of the bracket 7, and the base 8 slides in the movable cavity 10 along the distribution direction of the two sets of transverse platforms 1. The grating strip 4 is pasted on the side of the base 8 facing the installation space 6, and a moving handle 12 is fixed on the side of the base 8 away from the grating strip 4. There are two moving handles 12, which are respectively fixed at two ends of the base 8 away from each other along the length direction of the base 8, and the moving handle 12 is fixed at the upper position of the base 8.

[0033] Reference Figure 3 , Figure 4 and Figure 5 , the base 8 can be switched between the first state and the second state on the bracket 7. When the base 8 is in the first state, the grating strip 4 is close to the grating reading head 5 and is opposite to the grating reading head 5. At this time, the grating strip 4 is in the working state, and the grating reading head 5 can read the grating reading strip. When the base 8 is in the second state, the base 8 moves away from the installation space 6 and turns upward 90° from the side with the grating strip 4, so that the grating strip 4 is located in the operating cavity 9, and the surface of the grating strip 4 is exposed upward, so that the operator can insert and wipe the surface of the grating strip 4.

[0034] Reference Figure 5 and Figure 6 , wherein, a blocking portion 15 is fixed on the inner walls of the upper and lower sides of the active cavity 10 on the side of the bracket 7 close to the installation space 6, and the blocking portion 15 is in the shape of a long strip extending along the length direction of the bracket 7. A blocking groove corresponding to the blocking portion 15 and for the blocking portion 15 to be inserted is provided on the side of the base 8 close to the installation space 6. When the base 8 moves to the first state, the blocking portion 15 presses into the corresponding blocking groove to limit the base 8 from moving forward further.

[0035] Reference Figure 4 , Figure 5 and Figure 6 In order to improve the stability of the base 8 in the first state, the bracket 7 is detachably connected with a positioning member 16, which is in the shape of a long strip that matches the active cavity 10, and a connecting piece 23 extends outward from the periphery of the positioning member 16. When the base 8 is in the first state, the moving handle 12 is stored in the active cavity 10, and the positioning member 16 can be inserted into the active cavity 10 between the two moving handles 12, and abuts against the side of the base 8 away from the grating bar 4. At the same time, the bolt can pass through the connecting piece 23 and be threadedly connected to the bracket 7 to limit the base 8 from moving away from the installation space 6. The blocking portion 15 and the positioning member 16 together position the base 8, and the positioning member 16 fills the space of the active cavity 10 to improve the support strength of the bracket 7.

[0036] Reference Figure 4 , Figure 7 and Figure 8 More specifically, a limiting member 11 is fixed on the inner wall of the activity cavity 10 at the side of the bracket 7 away from the installation space 6, and there are two limiting members 11, which are respectively located at the two ends of the activity cavity 10 in the length direction of the bracket 7. The limiting member 11 is used to cooperate with the moving handle 12 to guide the base 8 to the second state when the base 8 moves to the side of the bracket 7 away from the installation space 6.

[0037] The stopper 11 includes a first section 111 and a second section 112 sequentially distributed along the length direction of the bracket 7, and the first section 111 is fixed between the second section 112 and the inner wall of the active chamber 10. Specifically, the first section 111 is in the shape of a rod extending along the length direction of the base 8. The second section 112 is in the shape of a cylinder with an axis parallel to the length direction of the base 8, and the longitudinal section size of the second section 112 is larger than the longitudinal section size of the first section 111, and the outer periphery of the second section 112 exceeds the outer periphery of the first section 111.

[0038] Reference Fig. 9 and Fig.10 , wherein the side of the first section 111 close to the installation space 6 is square, and the side of the first section 111 away from the installation space 6 is sharp with chamfers on the upper and lower sides.

[0039] Reference Figure 7 and Figure 8 The moving handle 12 includes a rotating section 121 and a limiting section 122 which are sequentially distributed along the length direction of the vertical base 8. The rotating section 121 is fixed between the base 8 and the limiting section 122. The limiting section 122 is provided with a first slide 13 for the first section 111 to move along the distribution direction of the two sets of horizontal platforms 1. The limiting section 122 and the rotating section 121 are both provided with a first slide 13 for the second section 112 to move along the distribution direction of the rotating section 121 and the limiting section 122. The first slides 13 on the limiting section 122 and the rotating section 121 are continuous and connected along the length direction of the vertical base 8.

[0040] Reference Fig. 9 and Fig.10 In the process of the base 8 moving from the first state to the second state, when the base 8 is in the first state, the first section 111 is located in the first slide groove 13, and the upper and lower ends of the first section 111 respectively abut against the upper and lower inner walls of the first slide groove 13, while the second section 112 is located in the second slide groove 14 of the limiting section 122, and the upper and lower sides of the second section 112 abut against the upper and lower inner walls of the second slide groove 14, and the two ends of the second section 112 that are away from each other respectively abut against the left and right inner walls of the second slide groove 14. When the base 8 moves away from the installation space 6 in the state where the first section 111 cooperates with the first slide groove 13, due to the limiting effect of the cooperation between the first section 111 and the first slide groove 13, it can only move along the distribution direction of the two groups of horizontal platforms 1.

[0041] Reference Fig.11 and Fig.12, and then the base 8 is moved until the limiting section 122 is separated from the first section 111, at which time the second section 112 enters the second slide groove 14 of the rotating section 121, and the sliding limiting relationship between the second section 112 and the second slide groove 14 of the limiting section 122 is similar, the second section 112 is limited and slides in the second slide groove 14 of the rotating section 121, and at this time the base 8 and the grating bar 4 are both corresponding to the bottom of the operating cavity 9. Then the rotating section 121 is rotated 90° around the second section 112, driving the base 8 to rotate upward, and the limiting section 122 is rotated downward, so that the base 8 and the grating bar 4 enter the operating cavity 9, and the limiting section 122 enters the accommodating cavity 17, and at this time the base 8 is in the second state.

[0042] It should be noted that when the rotating section 121 rotates around the second section 112, the limiting section 122 is always in a position separated from the first section 111 and opposite to the first section 111. At this time, the junction of the operating cavity 9 and the active cavity 10 has enough space for the base 8 and the grating bar 4 to rotate around the second section 112, and when the base 8 moves toward the physical direction of the bracket 7 at the junction of the operating cavity 9 and the active cavity 10, the limiting section 122 can abut against the outer wall of the first section 111 to prevent the movement of the base 8, so that the surface of the grating bar 4 is not easy to be scratched with the bracket 7, thereby protecting the grating bar 4. In the process of the base 8 resetting from the second state to the first state, the limiting section 122 first slides and plugs with the first section 111, and the base 8 then moves toward the installation space 6 through the junction of the operating cavity 9 and the active cavity 10.

[0043] Refer to 9 and Fig.11 Furthermore, the bracket 7 is provided with an insertion groove 18 for the limiting section 122 to be vertically inserted in the bottom wall of the accommodating cavity 17. When the base 8 is in the second state, the limiting section 122 is aligned with the insertion groove 18 and moved downward, which can drive the bracket 7 to be inserted into the insertion groove 18, so as to limit the moving handle 12 and the base 8 from continuing to rotate, thereby improving the stability of the base 8 in the second state.

[0044] Reference Figure 3 and Fig.11 In addition, after the limiting section 122 is pressed into the insertion slot 18, the base 8 is located in the operating cavity 9 and away from the active cavity 10 and located directly above the active cavity 10, so that the base 8 does not block the active cavity 10, the active cavity 10 is exposed, and the operator can clean the active cavity 10 on the side of the bracket 7 away from the installation space 6. At the same time, the operator can observe and clean the reading window of the grating reading head 5 through the active cavity 10.

[0045] Reference Fig.13 and Fig.14Furthermore, the longitudinal platform 2 is connected to the seat of the linear motor 22 and is detachably connected with an auxiliary mounting member 19. The auxiliary mounting member 19 includes a connecting frame 191, a mounting seat 192 and a pressure wheel 193. The connecting frame 191 is in an inverted L-shape and is detachably connected to the end of the longitudinal platform 2 by bolts, and the mounting seat 192 is fixed in an inverted U-shape and fixed to the bottom end of the connecting frame 191, and the mounting seat 192 naturally forms a limit cavity 20 with an opening facing the limit cavity 20. The pressure wheel 193 is rotatably connected to the mounting seat 192 and is located in the limit cavity 20, and the rotation axis of the pressure wheel 193 is parallel to the distribution direction of the two groups of transverse platforms 1.

[0046] When the grating strip 4 needs to be replaced, the base 8 is moved to the second state and the moving handle 12 is inserted into the insertion slot 18, and then the old grating strip 4 is removed and the new grating strip 4 is pasted. When pasting the new grating strip 4, the mounting seat 192 and the pressure wheel 193 are located directly above the base 8, and the pressure wheel 193 is opposite to the pasting position of the grating strip 4. The grating strip 4 is placed between the pressure wheel 193 and the upper surface of the base 8, and the opposite sides of the grating strip 4 can be against the opposite sides of the inner walls of the mounting seat 192. Then the longitudinal platform 2 is moved to drive the pressure wheel 193 to press the grating strip 4 down along the length direction of the bracket 7 and paste it to the base 8, and the mounting seat 192 guides the pasting direction of the grating strip 4 to improve the convenience and accuracy of installing the grating strip 4. After the grating strip 4 is installed, the auxiliary mounting part 19 can be removed.

[0047] The implementation principle of an ultra-high-speed linear motor dual-drive motion platform according to an embodiment of the present application is as follows: when the grating bars 4 are in use, the base 8 is in a first state, the grating bars 4 are opposite to and close to the grating reading head 5, and the base 8 is positioned and clamped by the blocking portion 15 and the positioning member 16.

[0048] When the grating strips 4 need to be cleaned, the base 8 is moved to the second state and the moving handle 12 is inserted into the insertion slot 18, so that the surface of the grating strips 4 is exposed upward in the operating cavity 9, so that the operator can insert and wipe the grating strips 4 from the side of the bracket 7 away from the installation space 6.

[0049] In addition, in order to further improve the convenience of inserting and wiping the grating bar 4, a window opposite to the bracket 7 can be opened on the dispensing machine housing, and a shielding plate that blocks the window can be removably installed by bolts. When the grating bar 4 needs to be operated, the shielding plate is removed and the operation is performed through the window on the housing.

[0050] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A dual-drive motion platform based on ultra-high-speed linear motors, characterized in that: include: A transverse platform (1) and a longitudinal platform (2), wherein the transverse platform (1) has two groups, an installation space (6) is provided between the two groups of transverse platforms (1), and two ends of the longitudinal platform (2) respectively move synchronously on the two groups of transverse platforms (1); each group of transverse platforms (1) comprises a bracket (7), a base (8) and a grating strip (4); the bracket (7) is used to support the longitudinal platform (2), and the side of the bracket (7) facing away from the installation space (6) has an operating cavity (9) penetrating the upper surface of the bracket (7); the grating strip (4) is installed on the base (8), and the base (8) moves on the bracket (7) and has a first state and a second state relative to itself; the longitudinal platform (2) has a grating reading head (5) for being opposite to the grating strip (4); The first state is characterized by the base (8) being close to the side of the bracket (7) facing the installation space (6), and the grating strip (4) facing the installation space (6) and opposite to the installation space (6); the second state is characterized by the base (8) being close to the side of the bracket (7) away from the installation space (6), and the base (8) being flipped relative to the first state so that the surface of the grating strip (4) is arranged facing upwards, and the grating strip (4) is located in the operating cavity (9).

2. The ultra-high-speed linear motor dual-drive motion platform according to claim 1, characterized in that: The support (7) has an active cavity (10) for the base (8) to slide along the distribution direction of the two groups of transverse platforms (1), the active cavity (10) is connected to the operating cavity (9), and the support (7) has a limiting member (11) in the inner wall of the active cavity (10); the end of the base (8) along the sliding direction of the longitudinal platform (2) is provided with a moving handle (12), the limiting member (11) is inserted into the moving handle (12) and moves in the moving handle (12) along the sliding direction of the base (8), and when the base (8) moves to the position where the grating strip (4) is relative to the operating cavity (9), the moving handle (12) can rotate relative to the limiting member (11) to drive the base (8) to the second state.

3. The ultra-high-speed linear motor dual-drive motion platform according to claim 2, characterized in that: The limiting member (11) comprises a first section (111) and a second section (112) which are connected in sequence along the moving direction of the longitudinal platform (2), the first section (111) being connected between the second section (112) and the inner wall of the bracket (7), and the outer periphery of the second section (112) exceeds the outer periphery of the first section (111); The moving handle (12) comprises a rotating section (121) and a limiting section (122) which are connected in sequence along a direction away from the base (8); the limiting section (122) has a first sliding groove (13) for the first section (111) to move along the sliding direction of the base (8); the rotating section (121) and the limiting section (122) both have a second sliding groove (14) for the second section (112) to move along the sliding direction of the base (8); the first sliding groove (13) and the second sliding groove (14) are connected; and when the first section (111) is separated from the first sliding groove (13) and the second section (112) enters the second sliding groove (14) in the rotating section (121), the rotating section (121) can rotate relative to the second section (112) to drive the base (8) to move to the second state.

4. The ultra-high-speed linear motor dual-drive motion platform according to claim 3, characterized in that: The first section (111) has a chamfer on a side facing away from the installation space (6).

5. The ultra-high-speed linear motor dual-drive motion platform according to claim 2, characterized in that: The bracket (7) is provided with a blocking portion (15) on the inner wall of the movable cavity (10); when the base (8) is in the first state, the side of the base (8) close to the installation space (6) abuts against the blocking portion (15) to limit the base (8) from continuing to move in a direction close to the installation space (6).

6. The ultra-high-speed linear motor dual-drive motion platform according to claim 5, characterized in that: When the base (8) is in the first state, the bracket (7) is detachably connected with a positioning member (16) for pressing against a side of the base (8) facing away from the installation space (6).

7. The ultra-high-speed linear motor dual-drive motion platform according to claim 2, characterized in that: The side of the bracket (7) facing away from the installation space (6) has a receiving cavity (17) connected to the movable cavity (10); when the base (8) is in the second state, the movable handle (12) enters the receiving cavity (17); and the bracket (7) is provided with an insertion groove (18) on the bottom wall of the receiving cavity (17); when the base (8) is in the second state, the movable handle (12) can move downward relative to the limiting member (11) and be inserted into the insertion groove (18).

8. The ultra-high-speed linear motor dual-drive motion platform according to claim 2, characterized in that: An auxiliary mounting member (19) is detachably connected to the longitudinal platform (2); when the base (8) is in the second state, the auxiliary mounting member (19) can guide the mounting of the grating strip (4).

9. The ultra-high-speed linear motor dual-drive motion platform according to claim 8, characterized in that: The auxiliary mounting member (19) comprises a connecting frame (191), a mounting seat (192) and a pressure wheel (193); the connecting frame (191) is detachably connected to the longitudinal platform (2); the mounting seat (192) is connected to the connecting frame (191), the mounting seat (192) forms a limiting cavity (20), and the pressure wheel (193) is rotatably connected to the mounting seat (192) and is located in the limiting cavity (20); When the base (8) is in the second state, the pressure wheel (193) can abut against the upper surface of the grating bar (4), and at the same time, the grating bar (4) enters the limiting cavity (20), and the opposite sides of the grating bar (4) respectively abut against the opposite inner walls of the mounting seat (192).

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