High-rigidity linear motor body profile structure

Abstract

The utility model relates to the technical field of linear motors, and particularly discloses a high-rigidity linear motor body profile structure, which comprises a profile main body, the cross section of the profile main body is U-shaped, and the profile main body is provided with a first bearing platform for mounting a stator and a second bearing platform for mounting a guide rail. A stator of the linear motor drives the rotor to reciprocate in the length direction of the guide rail. According to the utility model, the U-shaped section bar main body is adopted, and the stator and the guide rail are respectively installed through the independent platforms, thereby realizing modularized assembly and maintenance; the U-shaped structure has light weight and high rigidity, disperses stress and reduces deformation, and is matched with a high-precision guide rail to ensure stable operation of the rotor.

Description

Technical Field

[0001] This utility model relates to the field of linear motor technology, and in particular discloses a high-rigidity linear motor body profile structure. Background Technology

[0002] Traditional linear motor body profiles often employ a spliced ​​structure, which suffers from insufficient rigidity, stress concentration, and low heat dissipation efficiency. For example, conventional U-shaped profiles are prone to fatigue cracking due to localized stress concentration during the reciprocating motion of the mover. The presence of splicing seams further weakens the structural strength, affecting the installation accuracy of the stator and guide rails, ultimately leading to deviations in the mover's trajectory. Furthermore, traditional profile heat dissipation designs rely on natural convection, which can easily cause material softening due to excessive temperature rise during high-power operation, shortening the motor's lifespan. Simultaneously, the excessive weight of the profiles increases the equipment load, and the complex structure leads to high processing costs and maintenance difficulties. While existing technologies improve rigidity by adding reinforcing ribs or thickening materials, this sacrifices lightweight design and heat dissipation performance, making it difficult to meet the long-term reliable operation requirements of demanding scenarios such as precision machining and semiconductor manufacturing. Utility Model Content

[0003] In order to overcome the shortcomings and deficiencies of the existing technology, the purpose of this utility model is to provide a high-rigidity linear motor body profile structure.

[0004] To achieve the above objectives, this utility model provides a high-rigidity linear motor body profile structure, including a profile body with a U-shaped cross-section. The profile body is provided with a first bearing platform for mounting the stator and a second bearing platform for mounting the guide rail. The stator of the linear motor drives the mover to reciprocate along the length direction of the guide rail.

[0005] Furthermore, the profile body is provided with a slide groove for use with the second bearing platform and a first stress relief hole for use with the slide groove; the slide groove penetrates the side surface of the second bearing platform, and the first stress relief hole does not penetrate the side surface of the second bearing platform; the slide groove assists the mover to reciprocate along the length direction of the guide rail, and the first stress relief hole is used to disperse the concentrated stress generated by the mover reciprocating along the slide groove.

[0006] Furthermore, the profile body is provided with two support plates in parallel, which extend along the length of the profile body and are used to assist in supporting the movement of the mover.

[0007] Furthermore, a clearance step is provided between the support plate and the second bearing platform, and the mover reciprocates on the guide rail via the slider. The clearance step is used for the slider to slide.

[0008] Furthermore, the bottom of the profile body is provided with a clearance groove and a second stress relief hole used in conjunction with the clearance groove; the clearance groove penetrates the bottom surface of the first bearing platform, and the second stress relief hole does not penetrate the bottom surface of the first bearing platform; the clearance groove makes the bottom of the profile body free from the external bearing plane, reducing contact stress, and the second stress relief hole is used to release the stress generated by the movement of the actuator.

[0009] Furthermore, the profile body is provided with an opening groove and a third stress relief hole used in conjunction with the opening groove; the opening groove penetrates the side surface of the second bearing platform, while the third stress relief hole does not penetrate the side surface of the second bearing platform; the opening groove is used for weight reduction and heat dissipation, and the third stress relief hole is used to release the stress caused by the opening groove.

[0010] Furthermore, the main body of the profile is made of a high-rigidity material.

[0011] Furthermore, the main body of the profile is an integral structure formed by extrusion molding using an extrusion device.

[0012] Furthermore, the number of the second bearing platforms is set to two, and the two second bearing platforms are arranged parallel to each other on both sides of the first bearing platform along the width direction of the profile body.

[0013] Furthermore, the stress relief holes are arranged along the length of the profile body.

[0014] The beneficial effects of this utility model are:

[0015] (1) High strength and resistance to deformation: The U-shaped cross section and high rigidity material are integrally formed, and the stress relief holes and support plate structure are evenly distributed along the length direction. This effectively disperses the concentrated stress generated by the reciprocating motion of the mover, suppresses the deformation of the profile body, ensures the installation accuracy of the stator and guide rail, and significantly improves the stability of the mover's motion trajectory. It is suitable for precision positioning scenarios.

[0016] (2) High efficiency heat dissipation and weight reduction: The open slot design on both sides not only reduces weight, but also enhances heat conduction by increasing the heat dissipation area. Combined with the bottom open slot to reduce contact thermal resistance, it avoids performance degradation caused by temperature rise and ensures stable operation of the motor for a long time.

[0017] (3) Durability assurance: The chamfering treatment at the bend eliminates stress concentration points, the clearance step and guide rail cooperate to reduce slider wear, and the stress relief structure extends the fatigue life of the profile, reduces the maintenance frequency, and meets the needs of high load and high frequency operation. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-rigidity linear motor body profile according to this utility model;

[0019] Figure 2This is a side view of the overall structure of this utility model;

[0020] Figure 3 This is a schematic diagram of the stress relief hole of this utility model.

[0021] The reference numerals in the attached drawings include: 1. Profile body; 2. First bearing platform; 3. Second bearing platform; 4. Slide groove; 5. First stress relief hole; 6. Support plate; 7. Clearance step; 8. Clearance groove; 9. Second stress relief hole; 11. Opening groove; 12. Third stress relief hole; 13. First hole; 14. Second hole. Detailed Implementation

[0022] To facilitate understanding by those skilled in the art, the present invention will be further described below with reference to embodiments and accompanying drawings. The content mentioned in the embodiments is not intended to limit the present invention.

[0023] Please see Figures 1 to 3 As shown, the present invention discloses a high-rigidity linear motor body profile structure, including a profile body 1, the profile body 1 having a U-shaped cross-section, the profile body 1 having a first bearing platform 2 for mounting the stator and a second bearing platform 3 for mounting the guide rail, the stator of the linear motor driving the mover to reciprocate along the length direction of the guide rail.

[0024] In practical applications, the U-shaped structure exhibits high structural strength and rigidity. During linear motor operation, it better resists external forces and deformation, reducing the impact of structural deformation on motor operating accuracy and stability, ensuring reliable motor operation. This makes it suitable for high-precision applications such as precision machining equipment and high-precision testing instruments. A dedicated first support platform 2 for stator installation provides a stable and reliable mounting foundation. A well-designed support platform allows for more precise stator installation, facilitating relative position adjustments between the stator and other components (such as the mover), thereby optimizing the motor's electromagnetic performance and improving operating efficiency and control precision. The second support platform 3 is used to install the guide rails, ensuring a more stable installation. Stable guide rail installation is crucial for the linear motor's mover motion accuracy, ensuring smoother and more stable reciprocating motion along the guide rail length, reducing swaying and deviations during movement, and ultimately improving the overall motion and positioning accuracy of the linear motor.

[0025] Specifically, the profile body 1 is provided with a slide groove 4 for use with the second bearing platform 3 and a first stress relief hole 5 for use with the slide groove 4; the slide groove 4 penetrates the side surface of the second bearing platform 3, and the first stress relief hole 5 does not penetrate the side surface of the second bearing platform 3; the slide groove 4 assists the mover to reciprocate along the length direction of the guide rail, and the first stress relief hole 5 is used to disperse the concentrated stress generated by the mover reciprocating along the slide groove 4.

[0026] In practical use, the groove 4 assists the mover in reciprocating motion along the length of the guide rail, providing precise guidance for the mover's movement. This ensures the stability and accuracy of the mover during movement, making the entire system run more smoothly and reducing potential malfunctions and wear caused by motion deviations. The presence of the first stress relief hole 5 effectively disperses the concentrated stress generated by the mover's reciprocating motion along the groove 4. During the mover's movement, various forces may generate concentrated stress. If this concentrated stress is not dispersed in time, it may cause excessive local stress on the profile body 1, leading to deformation, damage, and other problems. The first stress relief hole 5, through its reasonable structural design, disperses the concentrated stress into the surrounding material, reducing the local stress level, improving the structural strength and service life of the profile body 1, and enhancing the reliability of the entire system.

[0027] Specifically, the profile body 1 is provided with two support plates 6 in parallel. The support plates 6 extend along the length direction of the profile body 1 and are used to assist in supporting the movement of the mover.

[0028] In practical use, the two support plates 6 extend along the length of the profile body 1, providing additional support points for the mover. During the reciprocating motion of the mover along the guide rail, especially under high load or high speed, the support plates 6 effectively distribute the weight of the mover and the force generated by the motion, preventing the mover from tilting or swaying due to uneven force distribution, thereby enhancing the stability of the mover's motion and ensuring the operating accuracy of the linear motor. The support plates 6, in conjunction with the profile body 1, further enhance the structural rigidity of the entire linear motor body. They can limit the deformation of the profile body 1 during mover movement, allowing the profile body 1 to better maintain its shape and dimensional accuracy, reducing the impact of structural deformation on motor performance. This is crucial for equipment requiring high-precision operation (such as precision CNC machine tools, electronic manufacturing equipment, etc.).

[0029] The auxiliary support plate 6 helps optimize the movement trajectory of the mover. Through the constraint and support of the support plate 6, the mover can move more accurately along the predetermined path of the guide rail, reducing motion deviation and improving the positioning accuracy and repeatability of the linear motor, meeting the needs of applications with extremely high motion accuracy requirements. Because the support plate 6 shares some of the force of the mover, it reduces the pressure on the guide rail, thereby reducing wear. This not only extends the service life of the guide rail and reduces the frequency and cost of maintenance and replacement, but also ensures that the linear motor maintains good performance throughout long-term operation.

[0030] Specifically, a clearance step 7 is provided between the support plate 6 and the second bearing platform 3, and the mover reciprocates on the guide rail via the slider. The clearance step 7 is used for the slider to slide.

[0031] In practical use, the clearance step 7 provides a dedicated sliding space for the slider, allowing it to reciprocate more smoothly on the guide rail under the drive of the mover. This avoids potential interference and friction between the slider and the support plate 6 or the second bearing platform 3, ensuring unimpeded movement of the mover and improving the stability and reliability of the linear motor. Because the slider can slide stably within the clearance step 7, it reduces mover deviation caused by poor slider movement. This helps maintain the mover's movement along a predetermined trajectory, thereby improving the linear motor's motion and positioning accuracy, meeting the needs of high-precision applications such as precision measuring instruments and high-end electronic equipment manufacturing.

[0032] The well-designed clearance step 7 reduces unnecessary friction and collisions between the slider and other components, thereby reducing wear on the slider, guide rail, and related parts, and extending their service life. Simultaneously, reduced friction and collisions effectively lower the noise generated during linear motor operation, improving the working environment, making it particularly suitable for applications with high noise control requirements. The clearance step 7, together with the support plate 6 and the second load-bearing platform 3, further enhances the stability of the linear motor's structure. During high-speed reciprocating motion of the mover, the clearance step 7 effectively disperses the force transmitted by the slider, avoiding localized stress concentration, ensuring the stability and reliability of the entire structure, and improving the linear motor's performance under complex operating conditions.

[0033] Specifically, the bottom of the profile body 1 is provided with a clearance groove 8 and a second stress relief hole 9 that works in conjunction with the clearance groove 8; the clearance groove 8 penetrates the bottom surface of the first bearing platform 2, while the second stress relief hole 9 does not penetrate the bottom surface of the first bearing platform 2; the clearance groove 8 allows the bottom of the profile body 1 to be free from the external bearing plane, reducing contact stress, and the second stress relief hole 9 is used to release the stress generated by the movement of the actuator.

[0034] In practical use, the presence of the clearance groove 8 ensures that the bottom of the profile body 1 is not directly exposed to the external bearing plane, preventing large-area direct contact between the bottom of the profile body 1 and the bearing plane, thus effectively reducing the contact stress between them. This prevents deformation and wear caused by excessive contact stress at the bottom of the profile body 1, extending its service life. It also reduces the requirements for the bearing plane, decreasing the possibility of damage due to excessive stress. The second stress relief hole 9 releases the stress generated by the movement of the mover. During movement, the mover generates various stresses that may be transmitted to the profile body 1. If not released in time, these stresses can damage the structure of the profile body 1. The second stress relief hole 9, through its reasonable structural design, disperses the stress generated by the movement of the mover, reducing the local stress concentration in the profile body 1, improving the structural strength and stability of the profile body 1, enhancing the reliability of the entire system, and reducing the probability of failures caused by stress problems.

[0035] The clearance groove 8 penetrates the bottom surface of the first bearing platform 2, while the second stress relief hole 9 does not. This ingenious structural design satisfies different functional requirements (clearance and stress relief) while ensuring the structural integrity of the bottom surface of the first bearing platform 2. The clearance groove 8 achieves clearance with the external bearing plane, while the second stress relief hole 9 effectively releases stress without compromising the integrity of the bottom surface, avoiding other problems that may arise from unreasonable structural design, such as the entry of liquids or impurities, further improving the performance and service life of the entire system. By reducing contact stress and effectively releasing the stress generated by the movement of the actuator, this structural design allows the entire system to better adapt to different working environments and conditions. Whether under high load, high frequency movement, or other complex working conditions, the profile body 1 maintains good performance, thereby improving the stability and adaptability of the system and expanding its application range.

[0036] Specifically, the profile body 1 is provided with an opening groove 11 and a third stress relief hole 12 used in conjunction with the opening groove 11; the opening groove 11 penetrates the side surface of the second bearing platform 3, and the third stress relief hole 12 does not penetrate the side surface of the second bearing platform 3; the opening groove 11 is used for weight reduction and heat dissipation, and the third stress relief hole 12 is used to release the stress caused by the opening groove 11.

[0037] In practical applications, the presence of the opening slot 11 effectively reduces the weight of the profile body 1. In applications with strict weight requirements, such as aerospace and automotive manufacturing, reducing component weight can lower overall equipment energy consumption, improve equipment operating efficiency, and also help reduce production costs, enhancing product competitiveness in the market. The opening slot 11 provides more heat dissipation channels for the profile body 1, helping to improve heat dissipation efficiency. During the operation of some equipment, the profile body 1 may generate heat for various reasons, such as frictional heat generated by the movement of the actuator. Good heat dissipation performance can ensure that the profile body 1 and related components operate within a suitable temperature range, avoiding performance degradation, shortened lifespan, or even failure due to overheating, thus improving system stability and reliability.

[0038] The function of the third stress relief hole 12 is to release the stress caused by the presence of the opening slot 11. While the opening slot 11 reduces weight and enhances heat dissipation, it may alter the stress distribution of the profile body 1, leading to localized stress concentration. Through a reasonable structural design, the third stress relief hole 12 effectively disperses these concentrated stresses, reducing the risk of deformation, cracking, and other damage to the profile body 1 caused by stress concentration, protecting the structural integrity of the profile body 1, and extending its service life. The opening slot 11 penetrates the side surface of the second bearing platform 3, while the third stress relief hole 12 does not penetrate the side surface of the second bearing platform 3. This structural design achieves the respective functions of the opening slot 11 and the third stress relief hole 12 while ensuring the structural integrity of the second bearing platform 3. The opening slot 11 achieves the functions of weight reduction and heat dissipation, while the third stress relief hole 12 effectively releases stress without compromising the integrity of the side surface of the second bearing platform 3, avoiding other problems that may arise from unreasonable structural design, such as the impact of external environmental factors (e.g., dust, moisture) on the internal structure, further improving the performance and reliability of the entire system.

[0039] Specifically, the profile body 1 is made of a high-rigidity material.

[0040] In practical applications, high-rigidity materials enable the profile body 1 to minimize its own deformation when subjected to various forces (such as thrust, friction, and inertial forces) generated by the movement of the mover, as well as external loads. Maintaining a stable structural form ensures the relative positional accuracy between the components of the linear motor, thereby guaranteeing smoother and more accurate movement of the mover along the guide rail and improving the overall operational stability of the linear motor. During long-term operation of the linear motor, the reciprocating motion of the mover continuously applies alternating stress to the profile body 1. High-rigidity materials typically have better fatigue resistance, capable of withstanding more stress cycles without cracking or damage, significantly extending the service life of the profile body 1 and reducing the frequency and cost of repair or replacement due to structural fatigue damage.

[0041] Because the profile body 1 is not easily deformed, the positional accuracy of components such as the stator and guide rails mounted on it is effectively maintained. This allows the mover to follow the predetermined trajectory more precisely during movement, improving the positioning accuracy and repeatability of the linear motor, meeting the needs of applications with extremely high motion accuracy requirements, such as precision machining and precision measurement. In harsh working environments with high loads, high vibrations, and high impacts, the profile body 1, made of high-rigidity materials, can better resist the influence of external factors and maintain the normal operation of the linear motor. For example, on industrial production lines, facing frequent starts and stops and high-speed operation, or bearing large loads in heavy machinery, the high-rigidity profile body 1 can ensure the reliable performance of the linear motor.

[0042] Specifically, the profile body 1 is an integral structure formed by extrusion molding using an extrusion device.

[0043] In practical applications, one-piece molding avoids the connection points present in traditional splicing or assembly methods, reducing potential structural strength weakening points caused by connection gaps, bolt holes, etc. The structural components form a continuous and complete whole, more effectively transferring and dispersing stress, thus significantly improving the strength and rigidity of the entire profile structure. This results in less deformation and higher stability when subjected to various forces generated by the movement of the mover and external loads. The one-piece molding process allows for better control of the relative position and dimensional accuracy between structural components. Since there is no need for complex assembly processes to combine multiple individual parts, it avoids dimensional deviations and positional inaccuracies caused by assembly errors. This allows for more precise positioning of components such as the stator and guide rails mounted on the profile structure, ensuring the accuracy of the mover's trajectory and thus improving the motion and positioning accuracy of the linear motor.

[0044] The elimination of connecting parts reduces the risk of malfunctions caused by loose, worn, or corroded connectors. The one-piece molding structure is more reliable, lowering the probability of structural failures during linear motor operation, improving equipment reliability and stability, reducing downtime for maintenance, and ultimately increasing production efficiency. The one-piece molding structure also allows for a more continuous and smoother heat conduction path within the profile, facilitating rapid heat transfer and dissipation. Compared to spliced ​​structures, heat is more easily conducted from heat-generating components (such as the stator) to the profile surface, achieving heat dissipation through heat exchange with the outside air. This better controls the motor's operating temperature, ensuring stable operation within a suitable temperature range.

[0045] Specifically, the number of the second bearing platform 3 is set to two, and the two second bearing platforms 3 are arranged parallel to each other on both sides of the first bearing platform 2 along the width direction of the profile body 1.

[0046] In practical use, two second load-bearing platforms 3 are arranged parallel to each other on both sides of the first load-bearing platform 2 along the width direction of the main body 1 of the profile, forming a scientifically sound load-bearing layout. The first load-bearing platform 2 can bear the main central load, while the second load-bearing platforms 3 on both sides can share the edge or lateral loads, making the entire profile more evenly stressed when subjected to forces of different directions and magnitudes. This not only improves the overall load-bearing capacity of the profile but also effectively reduces deformation and damage caused by uneven stress, extending the service life of the profile. This layout significantly enhances the stability of the profile structure. In practical use, especially when subjected to lateral forces or torques, the first load-bearing platform 2 and the second load-bearing platforms 3 on both sides cooperate to form a stable triangular support structure (understood from the perspective of mechanical principles), effectively resisting overturning and swaying. For example, in building structures or mechanical equipment, this stable structure can ensure reliable operation under complex working conditions and improve safety.

[0047] Specifically, the stress relief holes are arranged along the length of the profile body 1.

[0048] In practical use, when the linear motor is running, the mover reciprocates along the length of the guide rail, and the profile body 1 will bear significant stress in this direction. Stress relief holes arranged along the length can more directly and effectively disperse this stress, preventing excessive stress concentration in localized areas of the profile body 1. For example, the stress caused by inertial forces during the acceleration and deceleration of the mover can be dispersed to different parts of the profile body 1 by the stress relief holes, thereby improving the fatigue resistance and structural stability of the profile body 1. Since the mover's direction of movement is along the length of the guide rail, i.e., the length of the profile body 1, the stress relief holes are arranged in this direction to match the direction of the stress generated by the mover's movement. This arrangement allows for more targeted release and mitigation of the stress generated by the movement, enabling the profile body 1 to better adapt to the mover's movement and ensuring the reliability of the linear motor during operation.

[0049] The stress relief holes, evenly distributed along the length, maintain the symmetry and continuity of the profile body 1 structure to a certain extent. Compared to randomly distributed stress relief holes, this arrangement does not excessively weaken the overall strength of the profile body 1; on the contrary, it helps maintain its structural integrity, allowing the profile body 1 to maintain good mechanical properties even under stress. The stress relief holes also increase the contact area between the profile body 1 and the outside air to some extent, and the holes arranged along the length facilitate the conduction and dissipation of heat along the length of the profile body 1. The heat generated by the linear motor can be more effectively transferred to the surrounding environment through these holes, aiding in heat dissipation and helping to maintain the motor's operating temperature within a reasonable range, thus improving the motor's performance and service life.

[0050] In this embodiment, the stress relief hole has an arc-shaped first hole portion 13 and a linear second hole portion 14. The first hole portion 13 and the second hole portion 14 are connected in transition. The arc-shaped first hole portion 13 is used to disperse multi-directional stress in the circumferential direction. The second hole portion 14 cooperates to release the multi-directional stress transmitted from the first hole portion 13 to the surrounding area along the linear direction of the second hole portion 14.

[0051] In practical use, the arc-shaped first hole 13 effectively disperses multi-directional stress in the circumferential direction. In actual working conditions, stress often acts in multiple directions. The arc-shaped structure better adapts to this complex stress state, dispersing stress from various directions and preventing excessive stress concentration in a localized area. This reduces the risk of structural damage due to stress concentration and improves the structural strength and stability of the profile body 1. The linear second hole 14 transitions to the first hole 13, its main function being to work with the first hole 13 to release the transmitted multi-directional stress along a linear direction. This design allows stress to be transmitted and dispersed in a predetermined direction, preventing irregular stress propagation within the profile body 1, reducing adverse effects on other parts, further improving the efficiency and effectiveness of stress release, and enhancing the overall structural reliability.

[0052] The transitional connection between the first hole 13 and the second hole 14 makes the stress release path more rational and smooth. When stress is transferred from the arc-shaped first hole 13 to the linear second hole 14, a smooth transition is achieved, reducing energy loss and abrupt changes during stress transmission. This effectively disperses stress into the surrounding material, improving the profile body 1's resistance to stress damage. This unique stress-relieving hole structure effectively reduces the internal stress level of the profile body 1, minimizing damage such as deformation and cracking caused by stress. This is significant for extending the service life of the profile body 1 and improving its durability, especially in applications subjected to long-term dynamic loads or complex stress environments, significantly enhancing the reliability and stability of the entire system. In practical applications, the profile body 1 may face various complex stress environments, such as alternating stress generated by rotor movement and thermal stress. This stress-relieving hole structure with an arc-shaped first hole 13 and a linear second hole 14 better adapts to these complex stress conditions, effectively dispersing and releasing stress, ensuring the profile body 1 functions normally under different working conditions, and improving the system's adaptability and reliability.

[0053] In this embodiment, all bends between structural components in the high-rigidity linear motor body profile structure are chamfered.

[0054] In practical applications, chamfering eliminates or reduces sharp right angles at bends, resulting in a more even distribution of stress in these areas. During the operation of a linear motor, the movement of the actuator and various external forces generate stress in the profile structure. Sharp bends easily become stress concentration points, leading to premature cracking or even fracture of the material. Chamfering effectively disperses stress at bends, improving the fatigue resistance of the profile structure and extending its service life. Eliminating sharp right angles reduces the risk of scratches or bumps to operators during the installation and maintenance of linear motors, improving operational safety. Especially in work environments requiring frequent contact with the motor body, chamfering effectively protects the personal safety of workers. Chamfering makes the edges of bends smoother, facilitating the smooth passage of cutting tools during processing, reducing tool wear, and improving processing efficiency and quality. During assembly, smooth chamfers also make the fit between structural components smoother, reducing assembly difficulties or part damage caused by sharp edges, lowering assembly difficulty, and improving assembly efficiency.

[0055] Chamfering increases the surface area at bends, which facilitates heat dissipation. During linear motor operation, the generated heat can be transferred to the surrounding environment more quickly through the larger surface area, helping to lower the motor's temperature, improve heat dissipation efficiency, and ensure stable operation within a suitable temperature range. Sharp right-angled edges easily attract and accumulate dust, impurities, and other foreign objects, affecting the normal operation and appearance of the linear motor. The smooth edges after chamfering are less prone to accumulating foreign objects, reducing the risk of malfunctions caused by them, and also facilitating cleaning and maintenance of the motor.

[0056] In this embodiment, the guide surface of the slide 4 is nitrided using a gas nitriding device.

[0057] In practical use, nitriding treatment forms a high-hardness nitrided layer on the guide surface of the slide groove 4. This makes the guide surface more wear-resistant, effectively resisting frictional loss, reducing surface wear, extending the service life of the slide groove 4, and ensuring the stability and accuracy of the mover's movement during the reciprocating motion of the mover along the slide groove 4. After gas nitriding treatment, the wear resistance of the guide surface of the slide groove 4 is significantly improved. It can withstand greater frictional stress, reducing the risk of surface damage caused by friction. Even under long-term, high-frequency mover motion, it can maintain good surface quality, reducing the frequency of maintenance and replacement, and improving the overall operating efficiency of the equipment.

[0058] Nitriding treatment reduces the coefficient of friction on the guide surface of the slide groove 4, making the movement of the mover within the slide groove 4 smoother, reducing motion resistance, and lowering energy loss. This helps improve the energy utilization efficiency of the entire system, while also reducing heat generated by friction, lowering the system's operating temperature, and promoting stable system operation. Nitriding treatment also improves the fatigue strength of the guide surface of the slide groove 4, making it less prone to fatigue cracks and other defects when subjected to alternating stresses generated by the reciprocating motion of the mover. This enhances the structural reliability of the slide groove 4, improves its working capacity under long-term cyclic loads, and reduces the possibility of system failure due to fatigue damage.

[0059] In this embodiment, the opening angle of the opening slot 11 is set between 30° and 60°.

[0060] In practical applications, according to heat conduction theory, the larger the heat dissipation area, the better the heat transfer effect. When the angle of the opening slot 11 is between 30° and 60°, compared to smaller or larger angles, it can effectively increase the contact area with air while ensuring a certain structural strength, making it easier for heat to dissipate through air convection. Taking 30° as an example, the opening slot 11 can form a certain inclined surface on the side of the profile, expanding the contact range between the air and the inner surface of the slot; while at 60°, this contact range is further increased, but without causing a significant decrease in structural strength due to an excessively large opening. From a fluid dynamics perspective, when air flows through the opening slot 11, this angle range is conducive to forming a good airflow channel, promoting smooth airflow, reducing airflow turbulence and eddy currents, thereby improving heat dissipation efficiency. When the opening angle is between 30° and 60°, after the air enters the opening slot 11, it can flow in the slot at a more suitable angle and speed, fully exchange heat with the slot wall, and then flow out smoothly, carrying away more heat.

[0061] In mechanics of materials, the angles and shapes of a structure have a significant impact on its strength. An angle of 30°-60° for the opening slot 11 allows for effective heat dissipation and weight reduction while maintaining the overall structural strength of the profile. An angle less than 30° may result in an excessively small opening, diminishing the heat dissipation and weight reduction effects; while an angle greater than 60° may excessively weaken the structure at the opening, reducing overall strength, especially under high loads, potentially leading to deformation and cracking. The 30°-60° angle range represents a good balance between structural strength and functional achievement. This range helps to ensure a more uniform stress distribution in the profile under conditions such as the reciprocating motion of the mover. When the opening slot 11 angle is 30°-60°, the concentrated stress generated by the mover can be more effectively dispersed through the opening slot 11 and the surrounding structure, preventing stress concentration in specific areas and thus improving the profile's resistance to deformation and fatigue life.

[0062] The above description is only a preferred embodiment of this utility model. For those skilled in the art, there will be changes in the specific implementation method and application scope based on the idea of ​​this utility model. The content of this specification should not be construed as a limitation of this utility model.

Claims

1. A high-rigidity linear motor body profile structure, comprising a profile body (1), characterized in that: The profile body (1) has a U-shaped cross section. The profile body (1) is provided with a first bearing platform (2) for installing the stator and a second bearing platform (3) for installing the guide rail. The stator of the linear motor drives the mover to reciprocate along the length direction of the guide rail.

2. The high-rigidity linear motor body profile structure according to claim 1, characterized in that: The profile body (1) is provided with a groove (4) for use with the second bearing platform (3) and a first stress relief hole (5) for use with the groove (4); the groove (4) penetrates the side surface of the second bearing platform (3), and the first stress relief hole (5) does not penetrate the side surface of the second bearing platform (3); the groove (4) assists the mover to reciprocate along the length of the guide rail, and the first stress relief hole (5) is used to disperse the concentrated stress generated by the mover reciprocating along the groove (4).

3. The high-rigidity linear motor body profile structure according to claim 1, characterized in that: The profile body (1) is provided with two support plates (6) in parallel. The support plates (6) extend along the length direction of the profile body (1) and are used to assist in supporting the movement of the mover.

4. The high-rigidity linear motor body profile structure according to claim 3, characterized in that: An clearance step (7) is provided between the support plate (6) and the second bearing platform (3). The mover moves back and forth on the guide rail via the slider. The clearance step (7) is used for the slider to slide.

5. The high-rigidity linear motor body profile structure according to claim 1, characterized in that: The bottom of the profile body (1) is provided with a clearance groove (8) and a second stress relief hole (9) used in conjunction with the clearance groove (8); the clearance groove (8) penetrates the bottom surface of the first bearing platform (2), and the second stress relief hole (9) does not penetrate the bottom surface of the first bearing platform (2); the clearance groove (8) makes the bottom of the profile body (1) free from the external bearing plane, reducing contact stress, and the second stress relief hole (9) is used to release the stress generated by the movement of the actuator.

6. The high-rigidity linear motor body profile structure according to claim 1, characterized in that: The profile body (1) is provided with an opening groove (11) and a third stress relief hole (12) used in conjunction with the opening groove (11); the opening groove (11) penetrates the side surface of the second bearing platform (3), and the third stress relief hole (12) does not penetrate the side surface of the second bearing platform (3); the opening groove (11) is used for weight reduction and heat dissipation, and the third stress relief hole (12) is used to release the stress caused by the opening groove (11).

7. The high-rigidity linear motor body profile structure according to claim 1, characterized in that: The profile body (1) is made of high-rigidity material.

8. The high-rigidity linear motor body profile structure according to claim 1, characterized in that: The profile body (1) is an integral structure formed by extrusion molding through an extrusion device.

9. The high-rigidity linear motor body profile structure according to claim 1, characterized in that: The number of the second bearing platform (3) is set to two, and the two second bearing platforms (3) are arranged parallel to each other on both sides of the first bearing platform (2) along the width direction of the profile body (1).

10. A high-rigidity linear motor body profile structure according to claim 2, 5, or 6, characterized in that: The stress relief holes are arranged along the length of the profile body (1).

Images