Gantry double-drive linear motor platform

Abstract

The invention relates to the field of precision machining equipment, in particular to a gantry double-drive linear motor platform. The platform comprises a marble base, an upper shaft marble bottom plate and an upper shaft moving seat, and accurate movement of an upper layer and a lower layer is achieved through a first linear motor driving mechanism and a second linear motor driving mechanism. Specifically, the upper shaft marble bottom plate is connected to the lower shaft marble bottom plate in a sliding mode and is driven by a first linear motor; and the upper shaft moving seat is driven by the second linear motor to move along the upper shaft marble bottom plate. In addition, a transverse guide rail, an auxiliary fixing strip, a positioning groove, a mounting groove, a ventilation device and other structures are further arranged, and high-precision movement and stability of the platform are ensured. The effect of improving the machining precision and efficiency is achieved, and meanwhile the stability and reliability of the system are guaranteed.

Description

Technical Field

[0001] The present application relates to the field of intelligent precision machine tool technology, and in particular to a gantry dual-drive linear motor platform. Background Art

[0002] In the field of precision machining equipment technology, especially in high-precision and high-efficiency manufacturing processes, the performance of machine tools directly affects the quality and production efficiency of products. Traditional precision machining equipment mostly uses marble bases as support platforms, which are widely used due to their good stability and durability. However, with the improvement of industrial automation level and technological advancement, higher requirements are placed on the accuracy and stability of equipment, and traditional solutions can no longer meet the increasingly complex application needs.

[0003] In order to achieve high-precision motion control, some manufacturers will install multiple guide rails and motors on the platform to ensure accurate motion of each axis. These methods improve the accuracy and reliability of the system to a certain extent. However, for devices with particularly high precision levels, it is far from enough to rely on the installation of the above methods. If a large number of marble bases are used, due to their high density, the load of the entire platform is heavy, which not only increases the workload of the drive system, but also may affect the overall rigidity and stability of the platform, thereby affecting the final processing accuracy. Therefore, how to effectively reduce the load on the platform while maintaining or even improving its accuracy and stability has become a technical problem that needs to be solved urgently. Summary of the invention

[0004] In order to overcome the deficiencies of the above-mentioned prior art, the present application provides a gantry dual-drive linear motor platform, which can improve the accuracy and stability of the platform while reducing the load of the platform.

[0005] This application is implemented through the following technical solutions: A gantry dual-drive linear motor platform comprises a marble base, an upper-axis marble bottom plate and an upper-axis moving seat, wherein lower-axis marble bottom plates arranged longitudinally and in parallel are provided on both sides of the upper surface of the marble base; an open accommodating cavity arranged along its own length direction is provided on the upper-axis marble bottom plate, and the upper-axis marble bottom plate is slidably connected to the lower-axis marble bottom plate, and can move along the length direction of the lower-axis marble bottom plate under the action of power provided by a first linear motor drive mechanism; the upper-axis moving seat is slidably connected to the upper-axis marble bottom plate, and can move along the length direction of the upper-axis marble bottom plate under the action of power provided by a second linear motor drive mechanism; the stator assembly of the second linear motor drive mechanism is fixed in the open accommodating cavity of the upper-axis marble bottom plate.

[0006] By adopting the above technical scheme, not only the base is made of marble, but also the lower shaft bottom plate and the upper shaft bottom plate are made of marble, which has good stability and low thermal expansion coefficient, ensuring the high precision of the platform; an open accommodating cavity arranged along the length direction is provided on the upper shaft marble bottom plate, which, while ensuring the good stability and low thermal expansion coefficient of the base, also greatly reduces the weight of the base, thereby reducing the load of the lower shaft dual drive, avoiding the increase in the power of the lower shaft motor due to excessive weight, and ensuring the precision and maintenance convenience of the platform; and the open accommodating cavity also provides an installation space for the motor drive mechanism, optimizes the structural design of the platform, effectively reduces the overall height of the platform, and further improves the stability of the platform. The open accommodating cavity can also provide certain protection for the motor, thereby improving the reliability of the platform.

[0007] Optionally, a transverse guide rail is provided on the outer side wall of the upper shaft marble bottom plate, and the upper shaft moving seat is slidably connected to the transverse guide rail.

[0008] By adopting the above technical solution, a transverse guide rail is set on the outer side wall of the upper shaft marble bottom plate, so that the upper shaft moving seat can slide on the transverse guide rail stably and accurately, improving the overall accuracy and stability of the platform. At the same time, this design reduces the height of the upper shaft marble bottom plate, reduces the burden on the lower shaft motor, and further improves the operating efficiency and reliability of the system.

[0009] Optionally, a through hole is provided on the side wall of the upper shaft marble base plate, an auxiliary fixing strip is provided in the open accommodating cavity, the transverse guide rail is fixed to the auxiliary fixing strip by bolts passing through the through hole, and a positioning groove adapted to the auxiliary fixing strip is provided on the inner side wall of the upper shaft marble base plate.

[0010] By adopting the above technical solution, the transverse guide rail is fixed to the auxiliary fixing strip by bolts passing through the through holes, thereby enhancing the stability of the transverse guide rail and ensuring the precise horizontal movement of the upper shaft moving seat; the positioning groove on the inner wall of the upper shaft marble base plate can accurately match the auxiliary fixing strip to ensure the accuracy and stability of the transverse guide rail during installation, thereby improving the overall accuracy and reliability of the platform. This design not only improves the overall rigidity and stability of the platform, but also is more convenient for assembly and maintenance than the traditional method of drilling holes in the marble base and embedding sockets, reduces errors caused by improper assembly, and further improves processing accuracy.

[0011] Further optionally, the cross-section of the open accommodating cavity is an arc-shaped structure.

[0012] By adopting the above technical solution, the cross-section of the open accommodating cavity is an arc-shaped structure, which can not only reduce stress concentration and extend the service life, but also ensure the rigidity of the marble substrate itself, and reduce the processing difficulty. There is no need to process additional positioning grooves for the auxiliary fixing strips, and the auxiliary fixing strips can be guaranteed to provide support for the lateral or longitudinal loads of the marble substrate.

[0013] Optionally, the transverse guide rail includes a first transverse guide rail and a second transverse guide rail arranged in parallel.

[0014] By adopting the above technical solution, a first transverse guide rail and a second transverse guide rail are arranged in parallel, which improves the stability of the upper axis moving seat in the horizontal direction, reduces the risk of offset caused by a single guide rail, and ensures the high-precision processing requirements of the platform. At the same time, the dual guide rail design also enhances the carrying capacity of the system and further improves the rigidity and reliability of the overall structure.

[0015] Optionally, a plurality of mounting grooves adapted for the stator assembly of the second linear motor drive mechanism are provided on the side wall of the upper shaft marble base plate, a cover plate is provided at the open end of the open accommodating cavity, and the cover plate and the open accommodating cavity form a tubular cavity channel; a fan is provided at the end of the tubular cavity channel.

[0016] By adopting the above technical solution, multiple installation grooves for the stator assembly adapted to the second linear motor drive mechanism can be set on the side wall of the upper shaft marble bottom plate to ensure the stable installation of the stator assembly and improve the overall stability and accuracy of the platform, wherein a single stator core and winding are mainly installed in the installation groove, and the wiring part and the circuit board are mainly placed in the tube cavity channel. A cover plate is provided at the open end of the open accommodating cavity, which together with the open accommodating cavity forms a tube cavity channel, which can effectively prevent dust and impurities from entering, protect the internal components from pollution, and extend the service life of the equipment; a fan is provided at the end of the tube cavity channel, which can generate airflow during operation, further clean the dust in the pipeline, and carry heat to maintain a good heat dissipation effect, thereby improving the reliability and stability of the system.

[0017] Further optionally, a sealing plate is provided at one end of the tube cavity channel away from the fan, and ventilation holes are provided on the side of the mounting groove.

[0018] By adopting the above technical solution, a sealing plate is set at the end of the tube cavity channel away from the fan, which can effectively prevent external dust from entering the tube cavity, maintain internal cleanliness, and improve the operating stability and life of the equipment. Ventilation holes are set on the side of the installation slot to help dissipate heat, ensure the normal operation of the stator assembly in a high temperature environment, extend the service life, and reduce the failure rate caused by overheating.

[0019] Optionally, a longitudinal guide rail is provided on the marble bottom plate of the lower shaft, two sides of the marble bottom plate of the upper shaft are fixed on the lower shaft moving seat, and the lower shaft moving seat is slidably connected to the longitudinal guide rail.

[0020] By adopting the above technical solution, a longitudinal guide rail is set at the upper end of the lower shaft marble base plate, so that both sides of the upper shaft marble base plate can be fixed on the lower shaft moving seat, and the lower shaft moving seat is slidably connected to the longitudinal guide rail. This design not only improves the overall rigidity and stability of the platform, but also effectively reduces the risk of deformation caused by gravity, ensuring the requirements of high-precision processing. At the same time, this structural layout simplifies the assembly process and facilitates later maintenance and adjustment.

[0021] Optionally, the longitudinal guide rail includes a first longitudinal guide rail and a second longitudinal guide rail, the first longitudinal guide rail is arranged on the upper end of the lower shaft marble bottom plate, and the second longitudinal guide rail is arranged on the side wall of the lower shaft marble bottom plate.

[0022] By adopting the above technical solution, the first longitudinal guide rail and the second longitudinal guide rail are respectively located at the upper end and side wall of the lower shaft marble base plate, which can effectively improve the overall stability and carrying capacity of the gantry dual-drive linear motor platform. Specifically, the first longitudinal guide rail is arranged at the upper end of the lower shaft marble base plate, which helps to ensure the smooth movement of the upper shaft marble base plate in the horizontal direction and reduce the deviation caused by gravity; the second longitudinal guide rail is arranged on the side wall of the lower shaft marble base plate, which helps to ensure the smooth movement of the upper shaft marble base plate in the vertical direction, further enhances the rigidity of the platform, and improves the movement accuracy and stability.

[0023] Optionally, the opening of the upper shaft marble bottom plate is arranged downward, and the upper end of the lower shaft moving seat is provided with a positioning boss adapted to the cavity of the upper shaft marble bottom plate.

[0024] By adopting the above technical solution, the opening of the upper shaft marble bottom plate is arranged downward, which can further reduce the height of the entire platform, making the overall structure more compact. A positioning boss adapted to the cavity of the upper shaft marble bottom plate is provided at the upper end of the lower shaft moving seat, ensuring the precise fit between the upper shaft marble bottom plate and the lower shaft moving seat, and improving the overall stability and accuracy of the platform; this design not only reduces assembly errors, but also facilitates subsequent maintenance and adjustment.

[0025] In summary, the present application includes at least one of the following beneficial technical effects: The present application not only uses marble as the base, but also the lower shaft bottom plate and the upper shaft bottom plate, which have good stability and low thermal expansion coefficient, ensuring the high precision of the platform, and the upper shaft marble bottom plate is provided with an open accommodating cavity arranged along the length direction, which, on the one hand, ensures the good stability and low thermal expansion coefficient of the base, and also greatly reduces the weight of the base, thereby reducing the load of the lower shaft dual drive, avoiding the increase of the lower shaft motor power due to excessive weight, and ensuring the precision and maintenance convenience of the platform; The transverse guide rail of the present application is fixed to the auxiliary fixing strip by bolts passing through the through holes, thereby enhancing the stability of the transverse guide rail, ensuring the precise movement of the upper shaft moving seat in the horizontal direction, and at the same time improving the overall rigidity and stability of the platform, making it easier to assemble and maintain; The present application sets a plurality of mounting grooves on the side wall of the upper shaft marble bottom plate, optimizes the structural design of the platform, further reduces the weight of the marble base, reduces the load, ensures the stable installation of the stator assembly, and improves the overall stability and accuracy of the platform; The structure of the tubular channel of the present application can effectively prevent the entry of dust and impurities, protect internal components from pollution, and extend the service life of the equipment. A fan is provided at the end of the tubular channel to generate airflow during operation, further clean the dust and heat in the pipeline, maintain good heat dissipation effect, and improve the reliability and stability of the system. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a schematic diagram of the three-dimensional structure of the gantry dual-drive linear motor platform in the first embodiment; Figure 2 It is a schematic diagram of the three-dimensional structure of the marble bottom plate of the lower shaft in the first embodiment; Figure 3 It is a schematic diagram of the three-dimensional structure of the upper shaft marble bottom plate in the first embodiment; Figure 4 This is a schematic diagram of the internal structure of the upper shaft marble bottom plate in the first embodiment; Figure 5 This is a schematic diagram of the internal structure of the upper shaft marble bottom plate in the second embodiment; Figure 6 This is a schematic diagram of the internal structure of the upper shaft marble bottom plate in the third embodiment; Figure 7 is a schematic diagram of the side view structure of the upper shaft marble bottom plate in the third embodiment; Figure 8 is a schematic diagram of the side view of the upper shaft marble bottom plate in the fourth embodiment; Fig. 9 It is a schematic diagram of the cold air running path in the fourth embodiment.

[0027] In the figure: 1. marble base; 2. lower shaft marble bottom plate; 21. column; 22. lower shaft moving seat; 221. positioning boss; 23. longitudinal guide rail; 231. first longitudinal guide rail; 232. second longitudinal guide rail; 3. first linear motor drive mechanism; 4. upper shaft marble bottom plate; 41. opening accommodating cavity; 411. tubular cavity channel; 42. upper shaft moving seat; 43. transverse guide rail; 431. first transverse guide rail; 432. second transverse guide rail; 44. through hole; 45. positioning groove; 46. mounting groove; 47. cover plate; 48. ventilation hole; 49. sealing plate; 5. second linear motor drive mechanism; 6. auxiliary fixing strip; 7. fan; 8. vertical moving mechanism. DETAILED DESCRIPTION

[0028] The following will clearly and completely describe the technical solutions of the various embodiments of the present application in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present application, rather than all of the embodiments. Based on the embodiments of the present application, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present application.

[0029] Embodiment 1, refer to Figure 1 The embodiment of the present application discloses a gantry dual-drive linear motor platform, including a marble base 1, an upper-axis marble bottom plate 4 and an upper-axis moving seat 42. The upper surface of the marble base 1 is provided with lower-axis marble bottom plates 2 arranged longitudinally and parallelly on both sides; the upper-axis marble bottom plate 4 is provided with an open accommodating cavity 41 arranged along its own length direction, and the upper-axis marble bottom plate 4 is slidably connected to the lower-axis marble bottom plate 2, and can move along the length direction of the lower-axis marble bottom plate 2 under the action of power provided by a first linear motor drive mechanism 3; the upper-axis moving seat 42 is slidably connected to the upper-axis marble bottom plate 4, and the upper-axis moving seat 42 can move along the length direction of the upper-axis marble bottom plate 4 under the action of power provided by a second linear motor drive mechanism 5; the stator assembly of the second linear motor drive mechanism 5 is fixed in the open accommodating cavity 41 of the upper-axis marble bottom plate 4, so as to achieve the effect of reducing the platform load and improving accuracy and stability, wherein the upper-axis moving seat 42 can be used to install a vertical moving mechanism 8 to realize the processing of the workpiece, and the vertical moving mechanism 8 can be a telescopic cylinder.

[0030] Specifically, refer to Figure 1 The marble base 1 includes a large block of stone made of high-strength granite material. This material has good thermal stability and flatness, can effectively reduce the impact of temperature changes on the platform, and at the same time ensures a high level of plane accuracy, providing a guarantee for the high-precision operation of the platform. In addition, other high-hardness, low-expansion coefficient stones, such as basalt or limestone, can also be selected to adapt to different working environments.

[0031] Reference Figure 2 The lower shaft marble bottom plate 2 includes two parallel rectangular stone slabs, the front and rear ends of which include columns 21 and are fixed to the marble base 1 by bolts. Each stone slab is provided with a longitudinal guide rail 23. These guide rails can be made of stainless steel or aluminum alloy materials, and have good wear resistance and corrosion resistance. For example, a stainless steel guide rail with a diameter of 20 mm or an aluminum alloy guide rail with a T-shaped cross-section can be selected, both of which can provide stable guidance and support; the longitudinal guide rail 23 includes a first longitudinal guide rail 231 and a second longitudinal guide rail 232. The first longitudinal guide rail 231 is a first longitudinal guide rail 232. The guide rail 231 is arranged at the upper end of the lower shaft marble base plate 2, and the second longitudinal guide rail 232 is arranged on the side wall of the lower shaft marble base plate 2, wherein the first longitudinal guide rail 231 is arranged at the upper end of the lower shaft marble base plate 2, which helps to ensure the smooth movement of the upper shaft marble base plate 4 in the horizontal direction and reduce the deviation caused by gravity; the second longitudinal guide rail 232 is arranged on the side wall of the lower shaft marble base plate 2, which helps to ensure the smooth movement of the upper shaft marble base plate 4 in the vertical direction, further enhancing the rigidity of the platform and improving the movement accuracy and stability.

[0032] Reference Figure 3~Figure 4 The upper shaft marble base plate 4 is also made of high-quality granite, with a thickness of about 100mm and a width slightly smaller than the lower shaft marble base plate 2, so as to reduce the overall height, wherein the upper shaft marble base plate 4 is fixed on both sides on the lower shaft moving seat 22, the lower shaft moving seat 22 is slidably connected to the longitudinal guide rail 23, and an open accommodating cavity 41 is provided in the center of the bottom of the upper shaft marble base plate 4 for installing the stator assembly of the second linear motor drive mechanism 5, and this open accommodating cavity 41 can be finely processed by a CNC machine tool to ensure that its dimensional tolerance is within ±0.01mm, thereby ensuring the accurate installation and operation of the motor; the opening of the upper shaft marble base plate 4 is arranged downward, further reducing the height of the entire platform and making the overall structure more compact; and the upper end of the lower shaft moving seat 22 is provided with a positioning boss 221 adapted to the cavity of the upper shaft marble base plate 4, the positioning boss 221 ensures the precise fit between the upper shaft marble base plate 4 and the lower shaft moving seat 22, thereby improving the overall stability and precision of the platform.

[0033] Reference Figure 3~Figure 4The lower axis moving seat 22 includes a flat plate made of a lightweight alloy material, on which a slider matching the longitudinal guide rail 23 is provided. The material of the slider can be polyoxymethylene (POM) or nylon. Both materials have a low friction coefficient and good self-lubricating properties, and can maintain smooth operation during long-term operation. The first linear motor drive mechanism 3 includes two identical linear motors, which are respectively installed on two lower axis marble base plates 2. The stator assembly of each motor is fixed to the side of the lower axis marble base plate 2, and the mover is fixed to the bottom of the lower axis moving seat 22. The advantage of this design is that it can make full use of the space and avoid adding additional height. It is also convenient for maintenance and replacement. The selection of the linear motor should take into account its power and stroke. Generally speaking, the power should be above 1kW and the stroke should not be less than 1m to meet the requirements of high speed and high precision.

[0034] Reference Figure 3~Figure 4 , a transverse guide rail 43 is provided on the outer side wall of the upper shaft marble bottom plate 4, and the transverse guide rail 43 can also be made of stainless steel or aluminum alloy material, which has good wear resistance and corrosion resistance. For example, a stainless steel guide rail with a diameter of 20 mm or an aluminum alloy guide rail with a T-shaped cross-section can be selected, both of which can provide stable guidance and support; the transverse guide rail 43 includes a first transverse guide rail 431 and a second transverse guide rail 432 arranged in parallel, and the distance between the two guide rails can be adjusted according to actual needs, generally 50-100 mm, to ensure sufficient rigidity and stability; in order to facilitate assembly and maintenance, reduce the error caused by improper assembly, and further improve the processing accuracy, a through hole 44 is provided on the side wall of the upper shaft marble bottom plate 4, and an auxiliary fixing strip 6 is provided in the open accommodating cavity 41, and the transverse guide rail 43 is fixed to the auxiliary fixing strip 6 by bolts passing through the through hole 44, and a positioning groove 45 adapted to the auxiliary fixing strip 6 is provided on the inner side wall of the upper shaft marble bottom plate 4, wherein the auxiliary fixing strip 6 can be made of a plate made of stainless steel or aluminum alloy.

[0035] Reference Figure 3~Figure 4 The upper shaft moving seat 42 is slidably connected to the transverse guide rail 43. The upper shaft moving seat 42 includes a flat plate made of a light alloy material, on which a slider matching the transverse guide rail 43 is provided. The material of the slider can be polyoxymethylene (POM) or nylon. Both materials have a low friction coefficient and good self-lubricating properties, and can maintain smooth operation during long-term operation; the stator assembly of the second linear motor drive mechanism 5 is fixed in the open accommodating cavity 41 of the upper shaft marble base plate 4, and the mover is fixed on the upper shaft moving seat 42. Such a layout greatly reduces the weight of the base, reduces the load of the lower shaft dual drive, avoids the increase in the power of the lower shaft motor due to excessive weight, and ensures the accuracy and maintenance convenience of the platform.

[0036] The implementation principle of this embodiment is as follows: by utilizing the good stability and low thermal expansion coefficient of the marble material, the high precision of the platform in longitudinal and lateral movement is ensured. At the same time, an open accommodating cavity 41 arranged along the length direction is provided on the upper shaft marble base plate 4. On the one hand, while ensuring the good stability and low thermal expansion coefficient of the base, it also greatly reduces the weight of the base, thereby reducing the load of the lower shaft dual drive, avoiding the increase in the power of the lower shaft motor due to excessive weight, and ensuring the accuracy and maintenance convenience of the platform; and the open accommodating cavity 41 also provides an installation space for the motor drive mechanism, optimizes the structural design of the platform, effectively reduces the overall height of the platform, and further improves the stability of the platform. The open accommodating cavity 41 can also provide certain protection for the motor, thereby improving the reliability of the platform.

[0037] Example 2, refer to Figure 5 The difference between this embodiment and the first embodiment is that there are two upper shaft moving seats 42, which are symmetrically arranged on both sides of the upper shaft marble base plate 4. Each upper shaft moving seat 42 is controlled and moved by an independent second linear motor drive mechanism 5 to realize the processing of special workpieces. The cross-section of the opening accommodating cavity 41 is an arc-shaped structure, and the auxiliary fixing strip 6 includes a flat portion and an arc surface portion. The arc surface portion is adapted to the opening accommodating cavity 41, and the flat portion is used to install the stator assembly of the second linear motor drive mechanism 5.

[0038] The implementation principle of this embodiment is: the cross-section of the open accommodating cavity 41 is an arc-shaped structure, which can not only reduce stress concentration and extend the service life, but also ensure the rigidity of the marble substrate itself, and reduce the processing difficulty. There is no need to process additional positioning grooves 45 for the auxiliary fixing strip 6, and the auxiliary fixing strip 6 can provide support for the lateral or longitudinal load of the marble substrate.

[0039] Example 3, refer to Figure 6~Figure 7 The difference between this embodiment and the first embodiment is that a plurality of mounting grooves 46 adapted to the stator assembly of the second linear motor drive mechanism 5 are provided on the side wall of the upper shaft marble base plate 4, and a cover plate 47 is provided at the open end of the open accommodating cavity 41, and the cover plate 47 and the open accommodating cavity 41 constitute a tubular cavity channel 411, wherein a single prefabricated stator core and winding are mainly installed in the mounting groove 46, and the wiring part and the circuit board are mainly placed in the tubular cavity channel 411; a fan 7 is provided at the end of the tubular cavity channel 411, and a dustproof net can be provided at the air inlet of the fan 7 to prevent dust from entering the tubular cavity channel 411.

[0040] The implementation principle of the embodiment of the present application is: make full use of the structural characteristics of the marble base to integrate the stator part of the linear motor with it, ensure that the stator assembly is firmly installed, improve the overall stability and accuracy of the platform, and the open end of the open accommodating cavity 41 is provided with a cover plate 47, which together with the open accommodating cavity 41 forms a tubular cavity channel 411, which can avoid wind energy dispersion and effectively prevent dust and impurities from entering, protect internal components from pollution, and extend the service life of the equipment; a fan 7 is provided at the end of the tubular cavity channel 411, which can generate airflow during operation, further clean the dust and heat in the pipeline, maintain a good heat dissipation effect, and improve the reliability and stability of the system.

[0041] Embodiment 4, referring to Figure 8~Figure 9 The difference between this embodiment and the third embodiment is that a sealing plate 49 is provided at one end of the tube cavity channel 411 away from the fan 7, and a ventilation hole 48 is provided on the side of the mounting groove 46. When working, the cold air introduced by the fan 7 is discharged from the ventilation hole 48 after dissipating the heat of the stator assembly and the module control circuit board. After the upper shaft moving seat 42 moves to the top of a certain ventilation hole 48, the cold air blown out of the ventilation hole 48 can be blocked, and the cold air is driven to diffuse in all directions along the air gap. During the diffusion process, the dust attached to the surface of the stator or the mover can be blown off, so as to maintain the cleanliness of the air gap between the stator and the mover and reduce the failure rate.

[0042] The implementation principle of the embodiment of the present application is as follows: a sealing plate 49 is provided at one end of the tubular cavity channel 411 away from the fan 7, which can effectively prevent external dust from entering the interior of the tubular cavity, maintain internal cleanliness, and improve the operating stability and life of the equipment; at the same time, ventilation holes 48 are provided on the side of the mounting groove 46, which are conducive to heat dissipation, and can make full use of wind energy to blow away dust in the air gap between the mover and the stator, ensuring that the stator assembly works normally in a high temperature environment, extending the service life, and reducing the failure rate caused by overheating.

[0043] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present application, rather than to limit it. Although the present application has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the technical solutions of the embodiments of the present application.

Claims

1. A gantry dual-drive linear motor platform, characterized in that: The invention comprises a marble base (1), an upper shaft marble bottom plate (4) and an upper shaft movable seat (42), wherein lower shaft marble bottom plates (2) are longitudinally arranged in parallel on both sides of the upper surface of the marble base (1); an open accommodating cavity (41) arranged along its length direction is provided on the upper shaft marble bottom plate (4), and the upper shaft marble bottom plate (4) is slidably connected to the lower shaft marble bottom plate (2), and can move along the length direction of the lower shaft marble bottom plate (2) under the action of power provided by a first linear motor drive mechanism (3); the upper shaft movable seat (42) is slidably connected to the upper shaft marble bottom plate (4), and can move along the length direction of the upper shaft marble bottom plate (4) under the action of power provided by a second linear motor drive mechanism (5); and a stator assembly of the second linear motor drive mechanism (5) is fixed in the open accommodating cavity (41) of the upper shaft marble bottom plate (4).

2. The gantry dual-drive linear motor platform according to claim 1, characterized in that: A transverse guide rail (43) is provided on the outer side wall of the upper shaft marble bottom plate (4), and the upper shaft moving seat (42) is slidably connected to the transverse guide rail (43).

3. The gantry dual-drive linear motor platform according to claim 2, characterized in that: A through hole (44) is provided on the side wall of the upper shaft marble bottom plate (4), an auxiliary fixing strip (6) is provided in the open accommodating cavity (41), the transverse guide rail (43) is fixed to the auxiliary fixing strip (6) by bolts passing through the through hole (44), and a positioning groove (45) adapted to fit the auxiliary fixing strip (6) is provided on the inner side wall of the upper shaft marble bottom plate (4).

4. The gantry dual-drive linear motor platform according to claim 3 is characterized in that: The cross section of the open accommodating cavity (41) is an arc-shaped structure.

5. The gantry dual-drive linear motor platform according to claim 2, characterized in that: The transverse guide rail (43) comprises a first transverse guide rail (431) and a second transverse guide rail (432) arranged in parallel.

6. The gantry dual-drive linear motor platform according to claim 1, characterized in that: A plurality of mounting grooves (46) adapted to fit the stator assembly of the second linear motor drive mechanism (5) are provided on the side wall of the upper shaft marble bottom plate (4); a cover plate (47) is provided at the open end of the open accommodating cavity (41); the cover plate (47) and the open accommodating cavity (41) form a tubular cavity channel (411); and a fan (7) is provided at the end of the tubular cavity channel (411).

7. The gantry dual-drive linear motor platform according to claim 6, characterized in that: A sealing plate (49) is provided at one end of the tubular cavity channel (411) away from the fan (7), and a ventilation hole (48) is provided on the side of the mounting groove (46).

8. The gantry dual-drive linear motor platform according to claim 1, characterized in that: A longitudinal guide rail (23) is provided on the lower shaft marble bottom plate (2), and two sides of the upper shaft marble bottom plate (4) are fixed on the lower shaft moving seat (22), and the lower shaft moving seat (22) is slidably connected to the longitudinal guide rail (23).

9. The gantry dual-drive linear motor platform according to claim 8, characterized in that: The longitudinal guide rail (23) comprises a first longitudinal guide rail (231) and a second longitudinal guide rail (232), wherein the first longitudinal guide rail (231) is arranged at the upper end of the lower shaft marble bottom plate (2), and the second longitudinal guide rail (232) is arranged on the side wall of the lower shaft marble bottom plate (2).

10. The gantry dual-drive linear motor platform according to claim 8, characterized in that: The opening of the upper shaft marble bottom plate (4) is arranged downward, and the upper end of the lower shaft moving seat (22) is provided with a positioning boss (221) adapted to fit the cavity of the upper shaft marble bottom plate (4).

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