Linear motor module and worktable

Abstract

The application provides a linear motor module and a workbench, and relates to the technical field of linear motors.The linear motor module comprises a base, a sliding table and a sliding assembly.A plurality of magnetic tracks are arranged on the base.The sliding table is slidably connected to the base, and a plurality of movers are arranged on the sliding table, with one-to-one correspondence with the plurality of magnetic tracks.The sliding assembly comprises a plurality of sliding rail pieces and a plurality of sliding pieces.The plurality of sliding rail pieces are installed on the side of the base facing the sliding table, and one magnetic track is arranged between every two sliding rail pieces.The plurality of sliding pieces are installed on the side of the sliding table facing the base, and one mover is arranged between every two sliding pieces.A groove is formed on the side of the sliding rail piece facing the sliding piece, and a boss is arranged on the sliding piece, which is slidably connected to the groove.The protruding part of the linear motor module of the application is only single-sidedly and slidably matched with the groove, the contact area is smaller, the friction is also smaller, and the driving force required when the linear motor module starts is effectively reduced.

Description

Technical Field

[0001] This application relates to the field of linear motor technology, and more specifically, to a linear motor module and a worktable. Background Technology

[0002] A linear motor module is a system integration based on components such as linear motors and linear guides. A linear motor module can directly convert electrical energy into linear motion, thereby driving load equipment to perform corresponding operations.

[0003] In related technologies, the relative sliding between the slide and the base of a linear motor module usually relies on balls or rollers, which have high friction and result in the linear motor module consuming a large amount of internal energy during operation. Utility Model Content

[0004] In order to at least address some of the deficiencies mentioned in the related technologies, this application provides a linear motor module and a worktable.

[0005] The linear motor module provided in this application includes a base, a slide table, and a sliding assembly. The base has multiple magnetic rails. The slide table is slidably connected to the base and has multiple movers, each mover corresponding to one of the magnetic rails. The sliding assembly includes multiple slide rail components and multiple sliding members. The slide rail components are all mounted on the base facing the slide table, and a magnetic rail is positioned between every two slide rail components. The sliding members are all mounted on the slide table facing the base, and a mover is positioned between every two sliding members. A groove is formed on the slide rail component facing the sliding member, and a boss is provided on the sliding member, the boss slidingly engaging within the groove.

[0006] Furthermore, the direction perpendicular to the relative sliding direction of the base and the slide is set as the first direction, and a plurality of slide rail components are evenly distributed on the base along the first direction.

[0007] Furthermore, a sliding groove is formed on the side of the base facing the slide table, and multiple sliding grooves are evenly distributed along the first direction. Each sliding groove has two sliding walls symmetrically arranged along the first direction, and each sliding wall is equipped with a slide rail component.

[0008] Furthermore, a mounting groove is recessed on the sliding wall in a direction away from the other sliding wall, and the slide rail is installed in the mounting groove so that the sliding wall remains flat.

[0009] Furthermore, the groove is formed on the side of the slide rail member facing the other slide rail member. The groove includes a straight portion and an arc portion, the straight portion being vertically positioned above the arc portion, and the straight portion and the arc portion transitioning smoothly.

[0010] Furthermore, the circumference length corresponding to the arc of the arc portion is A, and the arc length of the arc portion is L, satisfying: 1 / 4A≥L.

[0011] Furthermore, a protrusion is provided on the side of the slide platform facing the base, and multiple protrusions are evenly distributed along the first direction; each of the multiple protrusions corresponds to a multiple of the sliding grooves, and the protrusions can extend into the sliding grooves. Two mounting cavities are symmetrically formed on the protrusions along the first direction, and a separator is provided between the two mounting cavities; the sliding member is installed in each mounting cavity facing the slide rail member.

[0012] Furthermore, the mounting cavity is provided with multiple fixing positions, which are evenly distributed within the mounting cavity along the relative sliding direction of the slide and the base, with partitions placed between adjacent fixing positions. Each fixing position is equipped with a return element, and the slide is mounted on the protrusion via the multiple return elements.

[0013] Furthermore, a C-shaped groove is formed on the fixed position, and the return element is correspondingly configured as a C-shaped component, with both ends of the return element extending outside the C-shaped groove. Limiting grooves are formed at the ends of the return element, and the sliding component is sequentially inserted into a plurality of the limiting grooves.

[0014] Furthermore, a fixing member is also provided on the fixing position. The fixing member is located at the center of the C-shaped groove, and a straight groove is opened on the side of the fixing member facing the slide rail. The sliding member is simultaneously inserted into multiple limiting grooves and multiple straight grooves.

[0015] This application also provides a worktable, including two sets of linear motor modules as described in any of the above embodiments. The base of one set of linear motor modules is mounted on the slide of the other set of linear motor modules, and the sliding directions of the slides of the two sets of linear motor modules are set at an angle.

[0016] With the above technical solution, when the linear motor module of this application is working, the sliding table and the base slide relative to each other. The sliding component is set on the sliding table, and the slide rail is set on the base. The boss on the sliding component is always located in the groove of the slide rail. The base provides guidance and support for the sliding table through the cooperation between the slide rail and the sliding component.

[0017] In related technologies, the base and slide are guided and supported by ball bearings or rollers. Each ball bearing needs to contact at least two parts of the arc-shaped track simultaneously during transmission, forming two-point contact. The contact area is large, and rolling friction and micro-sliding friction coexist. When the base and slide slide relative to each other, the sliding friction is relatively large. The linear motor module of this application achieves guidance and support through the cooperation of a chute and a boss. The boss and the chute only have a one-sided sliding cooperation, resulting in a smaller contact area and less friction. This effectively reduces the driving force required for the linear motor module to start, making the linear motor module respond faster and generate less heat during operation.

[0018] Other features and advantages of this application will be described in detail in the following detailed description section. Attached Figure Description

[0019] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 This is a schematic diagram of the linear motor module provided in an embodiment of the present application from one perspective. Figure 2 A structural schematic diagram of the linear motor module provided in an embodiment of this application; Figure 3 Provided for the embodiments of this application Figure 2 A magnified view of a section at point A in the middle; Figure 4 Provided for the embodiments of this application Figure 2 A magnified view of a section at point B in the middle; Figure 5 A structural schematic diagram of the linear motor module provided in an embodiment of this application from another perspective; Figure 6 Provided for the embodiments of this application Figure 5 A magnified view of a section at point C.

[0021] icon: 100-Base; 110-Magnetic rail; 120-Sliding groove; 121-Sliding wall; 122-Mounting groove; 200-Slide table; 210-Movers; 220-Protrusion; 221-Separator; 222-C-groove; 223-Partition; 224-Fixed component; 225-Straight groove; 300-Sliding assembly; 310-Slide rail component; 311-Straight section; 312-Curved section; 320-Sliding component; 400-Returning element. Detailed Implementation

[0022] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0023] In the description of this application, it should be noted that the terms "inner" and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product is in use. They are used only for the convenience of describing this application and for simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application. Furthermore, the terms "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0024] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "setup" and "connection" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0025] In related technologies, the guiding and supporting structure between the base 100 and the slide 200 of a linear motor module typically uses balls or rollers 210 that mate with guide rails. That is, each or each row of balls requires at least two guide rails to clamp and press against the balls from both sides to form a stable rolling pair. However, this structure has two drawbacks. First, each ball needs to mate with at least two guide rails, and when there are many rolling pairs between the base 100 and the slide 200, more guide rails are required, resulting in higher friction in the rolling pairs. Second, to ensure the stability and reliability of the rolling pairs, the cross-section of the guide rails must be set to a semi-circular or near-semi-circular shape to ensure reliable mating between the guide rails and balls. This further increases the contact area between the balls and the guide rails, which in turn further increases the friction of the rolling pairs.

[0026] This embodiment provides a linear motor module to solve the problem of large sliding friction between the base 100 and the slide 200 in related technologies.

[0027] Please see Figures 1 to 5The linear motor module of this embodiment includes a base 100, a slide table 200, and a sliding assembly 300. The base 100 has multiple magnetic rails 110. The slide table 200 is slidably connected to the base 100 and has multiple movers 210, each corresponding to one of the magnetic rails 110. The sliding assembly 300 includes multiple slide rail components 310 and multiple sliding members 320. Each slide rail component 310 is mounted on the side of the base 100 facing the slide table 200, and a magnetic rail 110 is positioned between every two slide rail components 310. Each sliding member 320 is mounted on the side of the slide table 200 facing the base 100, and a mover 210 is positioned between every two sliding members 320. A groove is formed on the side of the slide rail component 310 facing the sliding member 320, and a boss is provided on the sliding member 320, the boss slidingly engaging within the groove.

[0028] Specifically, in this embodiment, when the linear motor module is in operation, the slide table 200 is mounted on the base 100, so that multiple movers 210 correspond one-to-one with the magnetic rails 110 on the base 100, and multiple sliders 320 correspond one-to-one with the slide rails 310, with one mover 210 arranged between every two sliders 320. The slide table 200 as a whole is slidably connected to the base 100 by means of a boss embedded in a groove.

[0029] The control system supplies a specific timing current to the coil of the mover 210. The mover 210 is subjected to the Lorentz force in the constant magnetic field generated by the magnetic rail 110, generating a thrust along the direction of the magnetic rail 110. The thrust drives the entire slide table 200 to move linearly along the base 100. During the movement, the boss is always engaged in the groove of the slide rail 310, providing guidance and support.

[0030] In this embodiment, the boss only contacts one side of the groove, resulting in a smaller contact area. The specific contact area can be arbitrarily set according to actual needs to ensure that, with sufficient supporting force, the friction between the sliding member 320 and the slide rail 310 is minimized. Furthermore, the sliding pair formed by the boss and groove in this embodiment has no inertial interference from rolling elements, thus avoiding internal kinetic energy loss during ball acceleration or deceleration.

[0031] Furthermore, the slide rail component 310 is a one-piece structure, with the groove directly formed on it, eliminating the need for easily damaged or lost small parts such as ball bearings and cages. This eliminates the need for additional assembly and significantly reduces maintenance requirements. During assembly, assembly time is shorter, yield is higher, and manufacturing costs are reduced, making it particularly suitable for mass automated production.

[0032] Furthermore, the rolling pairs formed by the balls also suffer from periodic vibrations caused by the "ball passing frequency," which can easily lead to "creeping" at low speeds, affecting low-speed stability. The sliding pairs in this embodiment exhibit continuous motion without periodic disturbances, and can be equipped with self-lubricating materials to provide stable friction characteristics, preventing creeping at low speeds and ensuring high stability.

[0033] In some embodiments, exemplarily, such as Figures 1 to 5 As shown, the direction perpendicular to the relative sliding direction of the base 100 and the slide table 200 is defined as the first direction, and multiple slide rail components 310 are evenly distributed on the base 100 along the first direction. When the linear motor drives the slide table 200, if the load is eccentric, an overturning moment will be generated around the axis of the sliding direction. If the guide structure is concentrated on the center line, the slide table 200 is prone to tilting, lateral deviation, or jamming, affecting accuracy or even damaging the guide rail. In this embodiment, multiple slide rail components 310 form a wide-span support layout along the first direction, increasing the anti-overturning moment arm. The overturning moment is shared by the slide rail components 310 on both sides, greatly reducing the single-point load. The slide table 200 can still maintain stable, torsion-free linear motion even when subjected to eccentric load.

[0034] Multiple slide rail components 310 are evenly distributed along the first direction, which can also distribute the weight of the slide table 200 and external loads to multiple sliding pairs. The pressure on each sliding pair is reduced, the wear rate is slowed down, and the service life is extended. Even if one sliding pair wears slightly, the other sliding pairs can still compensate, improving the fault tolerance of this embodiment.

[0035] In some embodiments, exemplarily, such as Figures 2 to 4 As shown, a sliding groove 120 is provided on the side of the base 100 facing the slide table 200, and multiple sliding grooves 120 are evenly distributed along a first direction. Each sliding groove 120 contains two sliding walls 121 symmetrically arranged along the first direction, and each sliding wall 121 is equipped with a slide rail component 310. Two slide rail components 310 are symmetrically arranged left and right within each sliding groove 120. The corresponding sliding member 320 protrusion of the slide table 200 can cooperate with the left and right slide rail components 310 respectively, forming a double-sided constraint. In this way, the sliding pair has an automatic centering capability; the slide table 200 will automatically return to center when a slight deviation occurs, making the movement trajectory of the slide table 200 more stable.

[0036] For example, please continue reading Figure 2 , Figure 3A mounting groove 122 is recessed on the sliding wall 121 along a direction away from the other sliding wall 121. The slide rail component 310 is installed in the mounting groove 122 to keep the sliding wall 121 flat. The slide rail component 310 and the base 100 are usually made of different materials with different coefficients of thermal expansion. If they are exposed, temperature changes can easily cause relative warping or misalignment, affecting the flatness of the chute. The bosses on the slide table 200 are prone to impact, jumping or jamming when passing over uneven areas, which can easily cause local stress concentration and accelerate wear after long-term operation. In this embodiment, the slide rail component 310 is embedded in the mounting groove 122, so that its upper surface is flush with the body of the sliding wall 121. The slide rail component 310 is surrounded and constrained by the mounting groove 122 on three sides, which restricts its degree of freedom of deformation. Even if there is thermal expansion, the thermal expansion will be mainly released along the length direction, which is less likely to cause the working surface to bulge or sink, thus improving the smoothness of movement, repeatability of positioning accuracy and long-term wear resistance.

[0037] The recessed structure of the mounting groove 122 allows the slide rail 310 to be encased in the base 100 material. When the slide rail 310 supports the sliding member 320, the external load will be transmitted through the slide rail 310 to the entire cross section of the sliding wall 121, rather than relying on only one or a few connection points to transmit the external load, thereby improving the overall compressive and impact resistance of this embodiment.

[0038] In some embodiments, exemplarily, such as Figure 2 , Figure 3 As shown, a groove is formed on the side of the slide rail 310 facing another slide rail 310. The groove includes a straight portion 311 and an arc portion 312. The straight portion 311 is vertically positioned above the arc portion 312, and the straight portion 311 and the arc portion 312 transition smoothly. After the slider 320 is slidably mounted on the slide rail 310, if the entire groove is arc-shaped or semi-circular, then although the slider 320 is fitted into the groove, only the lower half of the groove actually provides support for the slider 320. The upper half of the groove, although in contact with the slider 320, does not provide any support. In other words, the contact between the upper half of the groove and the slider 320 increases the friction between the groove and the slider 320, and does not effectively improve the support force of the groove on the slider 320.

[0039] In this embodiment, the groove is configured with a straight section 311 and an arc section 312. When the slider 320 is installed in the groove, the slider 320 only contacts the arc section 312 of the groove, providing sufficient support for the slider 320 through the arc section 312. The portion that does not provide support is configured as a straight line and does not contact the slider 320, thereby reducing the friction between the slide rail 310 and the slider 320 by reducing the effective contact area between the slider 320 and the slide rail 310.

[0040] In one embodiment, exemplarily, such as Figure 2 , Figure 3 As shown, the circumference length corresponding to the arc of the arc portion 312 is A, and the arc length of the arc portion 312 is L, satisfying: 1 / 4A≥L. When the slide table 200 moves, the outer surface of the boss and the inner wall of the groove form a sliding pair. When the frictional force is constant, the larger the actual contact area, the stronger the microscopic adhesion effect, and the equivalent friction coefficient may increase. Although the Coulomb friction of an ideal smooth surface is independent of the area, in engineering practice, the contact area directly affects the wear rate, heat generation, and starting and running resistance. In this embodiment, the arc length of the groove directly determines the radial contact length between the boss and the groove. After the boss is embedded in the groove, the overlap length between the two in the direction of movement remains unchanged. The smaller the arc length of the groove, the smaller the contact area between the boss and the groove, thereby effectively reducing sliding resistance, reducing heat generation, improving low-speed stability, reducing the driving force requirement of the linear motor, and achieving energy saving and high efficiency.

[0041] Furthermore, it should be noted that the limitation on the arc length of the groove in this embodiment is essentially a limitation on the contact area between the boss and the groove. A smaller contact area results in lower friction and lower sliding resistance of the sliding pair, but also a smaller supporting force provided by the slide rail 310 to the slider 320. Conversely, a larger contact area results in higher friction and greater sliding resistance of the sliding pair, but also a greater supporting force provided by the slide rail 310 to the slider 320. Therefore, by controlling the arc length of the groove, a balance between friction and supporting force between the slide rail 310 and the slider 320 can be achieved. With the contact area controlled at a reasonably low level, friction is significantly reduced compared to traditional ball bearing guides or multi-point long-contact sliders, while sufficient axial support is maintained to ensure that the contact stress is within the allowable range of the material under typical loads, thereby further improving the reliability of this embodiment.

[0042] In some embodiments, exemplarily, such as Figure 5 , Figure 6As shown, a protrusion 220 is provided on the side of the slide table 200 facing the base 100, and multiple protrusions 220 are evenly distributed along the first direction; the multiple protrusions 220 are correspondingly arranged with multiple sliding grooves 120, and the protrusions 220 can extend into the sliding grooves 120. Two mounting cavities are symmetrically formed on the protrusions 220 along the first direction, and a separator 221 is left between the two mounting cavities; a sliding member 320 is installed in each mounting cavity facing the slide rail member 310. Each protrusion 220 is an independent guide unit, embedded in the corresponding sliding groove 120, and two sliding members 320 are symmetrically arranged on the left and right sides inside it, respectively cooperating with the arc grooves on the slide rail members 310 on both sides of the sliding groove 120 to form a double-sided constrained, centrally symmetrical parallel guide pair. When the slide table 200 is subjected to eccentric load, lateral force or overturning moment, the sliding parts 320 on both sides are simultaneously subjected to force and supported in opposite directions. The separator 221 acts as a rigid rib to transmit shear force, prevent the two sliding parts 320 from deforming relative to each other, and effectively suppress the pitch of the slide table 200 around the motion axis.

[0043] The total load of the slide table 200 is distributed to multiple sliding grooves 120 through multiple protrusions 220. Each protrusion 220 is further supported by two sliding members 320, which multiplies the number of contact points and significantly reduces the pressure at a single point of contact. Combined with the control of the arc length of the grooves in the above embodiment, it is possible to ensure that the slide rail 310 can still provide sufficient support force under the premise of low friction.

[0044] Please continue reading. Figure 5 , Figure 6 For example, the mounting cavity is provided with multiple fixing positions, which are evenly distributed in the mounting cavity along the relative sliding direction of the slide table 200 and the base 100. A partition 223 is placed between adjacent fixing positions. Each fixing position is equipped with a return element 400, and the sliding member 320 is mounted on the protrusion 220 via multiple return elements 400. If the sliding member 320 is rigidly fixed to the protrusion 220 by screws or integral embedding, manufacturing errors, thermal deformation, or assembly stress will inevitably cause local warping or tilting of the sliding member 320, leading to problems such as edge contact, uneven loading, or uneven gaps when mating with the groove. In this embodiment, multiple return elements 400 serve as distributed elastic fulcrums, evenly supporting the sliding member 320 along the direction of movement. Each return element 400 can be independently fine-tuned, allowing the sliding member 320 to adapt to the groove contour and maintain a uniform full-arc surface fit, improving the reliability and structural rationality of this embodiment.

[0045] In some embodiments, exemplarily, such as Figure 5 , Figure 6As shown, a C-shaped groove 222 is provided on the fixed position, and the return element 400 is correspondingly configured as a C-shaped component, with both ends of the return element 400 extending outside the C-shaped groove 222. Limiting grooves are provided at the ends of the return element 400, and the sliding element 320 is sequentially inserted into multiple limiting grooves. The sliding element 320 is sequentially embedded in the limiting grooves at the ends of multiple return elements 400, forming a "multi-point interpenetration" constraint. The contour of the limiting groove matches the edge of the sliding element 320, effectively restricting the degree of freedom of the sliding element 320 in the first direction. Simultaneously, because multiple limiting grooves are evenly distributed along the direction of movement, the rotation of the sliding element 320 around its axis is also suppressed, ensuring that the sliding element 320 is reliably fixed.

[0046] Furthermore, the C-shaped return element 400 also possesses a certain radial elastic restoring force. When the slider 320 is inserted into the limiting groove at its end, the C-shaped element is compressed, resulting in a slight opening deformation. Subsequently, relying on the elasticity of the material, it automatically rebounds and clamps the slider 320, forming a constant and gentle preload. This preload can eliminate the assembly gap between the slider 320 and the limiting groove, compensate for dimensional changes caused by manufacturing tolerances, thermal expansion, or wear, and also avoid stress concentration in traditional rigid connections.

[0047] Please continue reading. Figure 5 , Figure 6 For example, a fixing member 224 is also provided on the fixing position. The fixing member 224 is located at the center of the C-shaped groove 222. A straight groove 225 is opened on the side of the fixing member 224 facing the slide rail 310. The sliding member 320 is simultaneously inserted into multiple limiting grooves and multiple straight grooves 225. The straight groove 225 on the central fixing member 224 serves as the main positioning feature. Compared with the fixing provided by the return element 400, the fixing member 224 has higher processing precision and more accurate positioning. The limiting groove of the return element 400 serves as an auxiliary constraint, providing pre-tightening and floating compensation. This ensures the reliability and accuracy of fixing the sliding member 320, thereby ensuring that the sliding member 320 and the slide rail 310 cooperate accurately and reliably.

[0048] This embodiment also provides a worktable, including two sets of linear motor modules as described in any of the above embodiments. The base 100 of one set of linear motor modules is mounted on the slide 200 of the other set of linear motor modules, and the sliding directions of the slides 200 of the two sets of linear motor modules are set at an angle.

[0049] The workbench provided in this embodiment includes the linear motor module in any of the above embodiments, and thus possesses all the beneficial effects of the linear motor module, which will not be elaborated further here.

[0050] It should be noted that, where there is no conflict, the features in the embodiments of this application can be combined with each other.

[0051] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A linear motor module, characterized in that, include: A base (100) on which multiple magnetic rails (110) are provided; A slide (200) is slidably connected to the base (100). A plurality of movers (210) are provided on the slide (200), and the plurality of movers (210) are correspondingly provided with the plurality of magnetic rails (110). A sliding assembly (300) includes multiple slide rails (310) and multiple sliders (320). The multiple slide rails (310) are all mounted on the base (100) facing the slide table (200), and a magnetic rail (110) is provided between every two slide rails (310). The multiple sliders (320) are all mounted on the slide table (200) facing the base (100), and a mover (210) is provided between every two sliders (320). The slide rail (310) has a groove on the side facing the slide member (320), and the slide member (320) has a boss that is slidably engaged in the groove.

2. The linear motor module according to claim 1, characterized in that, The direction perpendicular to the relative sliding direction of the base (100) and the slide (200) is set as the first direction, and a plurality of slide rails (310) are evenly distributed on the base (100) along the first direction.

3. The linear motor module according to claim 2, characterized in that, The base (100) has a sliding groove (120) on one side facing the slide (200), and multiple sliding grooves (120) are evenly distributed along the first direction; Each of the sliding grooves (120) has two sliding walls (121) symmetrically arranged along the first direction, and each of the sliding walls (121) is equipped with a slide rail (310).

4. The linear motor module according to claim 3, characterized in that, The sliding wall (121) has a recessed mounting groove (122) along the direction away from the other sliding wall (121), and the slide rail (310) is installed in the mounting groove (122) so that the sliding wall (121) remains flat.

5. The linear motor module according to claim 4, characterized in that, The groove is formed on the side of the slide rail (310) facing the other slide rail (310); The groove includes a straight section (311) and an arc section (312). The straight section (311) is arranged vertically above the arc section (312), and the straight section (311) and the arc section (312) are smoothly transitioned.

6. The linear motor module according to claim 5, characterized in that, The circumference length corresponding to the arc of the arc portion (312) is A, and the arc length of the arc portion (312) is L, satisfying: 1 / 4A≥L.

7. The linear motor module according to claim 2, characterized in that, The slide (200) has a protrusion (220) on one side facing the base (100), and a plurality of protrusions (220) are evenly distributed along the first direction; the plurality of protrusions (220) are correspondingly arranged with a plurality of sliding grooves (120), and the protrusions (220) can extend into the sliding grooves (120); Two mounting cavities are symmetrically opened on the protrusion (220) along the first direction, and a separator (221) is left between the two mounting cavities; the sliding member (320) is installed in each mounting cavity facing the slide rail member (310).

8. The linear motor module according to claim 7, characterized in that, The mounting cavity is provided with multiple fixing positions, which are evenly distributed in the mounting cavity along the relative sliding direction between the slide (200) and the base (100), and a partition (223) is provided between adjacent fixing positions. Each of the fixed positions is equipped with a return element (400), and the slider (320) is mounted on the protrusion (220) through a plurality of the return elements (400).

9. The linear motor module according to claim 8, characterized in that, A C-shaped groove (222) is provided on the fixed position, and the return element (400) is correspondingly configured as a C-shaped part, with the two ends of the return element (400) extending to the outside of the C-shaped groove (222); The end of the return element (400) is provided with a limiting groove, and the sliding member (320) is sequentially inserted into a plurality of the limiting grooves; a fixing member (224) is also provided on the fixing position, and the fixing member (224) is located at the center of the C-shaped groove (222); The fixing member (224) has a straight groove (225) on the side facing the slide rail member (310), and the sliding member (320) is simultaneously inserted into multiple limiting grooves and multiple straight grooves (225).

10. A workbench, characterized in that, Includes two sets of linear motor modules as described in any one of claims 1 to 9; The base (100) of one set of linear motor modules is mounted on the slide (200) of another set of linear motor modules, and the sliding directions of the slides (200) of the two sets of linear motor modules are set at an angle.

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