Linear motor guide rail with v-shaped rollers

Abstract

The utility model relates to the technical fields of linear guide rail, and discloses a linear motor guide rail with V-shaped roller, which comprises a bearing plate, a mover, a moving base, an eccentric roller, a concentric roller, a guide rail and a stator group, the eccentric roller comprises an eccentric bushing and a first runner, the guide rail is provided with a groove on both sides, the bearing plate is connected with the moving base, the mover is installed on the moving base and penetrates through the bottom of the moving base, the concentric roller is installed on one side of the moving base respectively, the first runner is adjustably connected with the other side of the moving base through the eccentric bushing, the first runner and the concentric roller are embedded in the groove, and the stator group is installed on the guide rail and corresponds to the mover. The utility model can greatly reduce the noise during high-speed movement, is very suitable for use in harsh environments, can greatly reduce the precision requirement of the installation reference surface, and saves time and labor during assembly.

Description

Technical Field

[0001] This utility model relates to the technical field of linear guide rails, and in particular to a linear motor guide rail with V-shaped rollers. Background Technology

[0002] Linear motor guide rails are core components in modern automated equipment, mainly composed of a linear motor and a guide rail. The linear motor achieves linear motion through electromagnetic action, while the guide rail supports and guides the mover, ensuring smooth movement. Current linear motor guide rails face the following technical challenges:

[0003] 1. Noise problem: The existing ball bearing guide rail uses point contact rolling, which results in large vibration and significant noise when moving at high speed.

[0004] 2. Poor environmental adaptability: Traditional guide rail grooves are prone to accumulating dust and chips, leading to increased wear.

[0005] 3. High installation accuracy requirements: The ball bearing guide rail requires a high-precision reference surface, and the assembly is time-consuming.

[0006] 4. High maintenance costs: The integral guide rail needs to be replaced as a whole after it wears out. Utility Model Content

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a linear motor guide rail with V-shaped rollers.

[0008] The objective of this utility model is achieved through the following technical solution: A linear motor guide rail with V-shaped rollers includes a support plate, a mover, a movable base, an eccentric roller, a concentric roller, a guide rail, and a stator assembly. The eccentric roller includes an eccentric bushing and a first rotating wheel. Grooves are provided on both sides of the guide rail. The support plate is connected to the movable base. The mover is installed on the movable base and passes through the bottom of the movable base. The concentric rollers are respectively installed on one side of the movable base. The first rotating wheel is adjustablely connected to the other side of the movable base through the eccentric bushing. Both the first rotating wheel and the concentric roller are embedded in the grooves. The stator assembly is installed on the guide rail and corresponds to the mover.

[0009] A better option is that the eccentric bushing has a hexagonal end.

[0010] A better option is that the eccentric bushing has a hexagonal end, and the eccentric bushing is installed on the other side of the movable base by screws, with the eccentric bushing being threadedly connected to the screws.

[0011] A better option is that the first wheel has a first inclined surface and a second inclined surface, and the included angle between the first inclined surface and the second inclined surface is the same as the included angle of the groove.

[0012] A better option is that the concentric roller includes a concentric bushing and a second roller, the second roller being rotatably connected to the concentric bushing, and the concentric bushing being installed on one side of the movable base by screws.

[0013] A better option is that the second wheel has a third inclined surface and a fourth inclined surface, and the included angle between the third inclined surface and the fourth inclined surface is the same as the included angle of the groove.

[0014] A better alternative is that the movable base includes a movable frame and a slotted plate, the slotted plate is connected to the inner wall of the movable frame, the slotted plate is provided with a mounting groove, the moving element passes through the mounting groove, the top of the movable frame is connected to the bearing plate, the concentric roller is installed on one side of the movable frame, and the eccentric bushing is adjustablely installed on the other side of the movable frame.

[0015] A better option is that the stator assembly includes multiple flat stators, which are sequentially connected and installed on the guide rail, and each of the flat stators corresponds to the mover.

[0016] A better option is that the moving element is provided with multiple silicon steel sheets, with gaps between adjacent silicon steel sheets, and the multiple silicon steel sheets pass through the moving base.

[0017] This utility model has the following advantages and beneficial effects compared to the prior art:

[0018] 1. In this utility model, both the eccentric roller and the concentric roller roll within the groove of the guide rail. Because both the eccentric roller and the concentric roller have a good contour consistency with the groove, noise during high-speed movement can be greatly reduced. During movement, the eccentric roller and the concentric roller scrape away dust, chips, and other impurities from the groove, keeping the groove's slope clean, thus making this guide rail very suitable for use in harsh environments. Since both the eccentric roller and the concentric roller have line contact with the groove, the accuracy requirements of the installation reference surface can be greatly reduced, saving time and effort in assembly.

[0019] 2. The eccentric roller, concentric roller and guide rail of this utility model can be replaced individually due to wear, reducing maintenance costs; and the preload between the eccentric roller and the groove can be adjusted to ensure smooth operation. Attached Figure Description

[0020] Figure 1 This is a schematic diagram of a linear motor guide rail with V-shaped rollers according to the present invention;

[0021] Figure 2 This is a side view of a linear motor guide rail with V-shaped rollers according to the present invention;

[0022] Figure 3 yes Figure 2 Sectional view at point A;

[0023] Figure 4 This is an exploded view of the moving part of a linear motor guide rail with V-shaped rollers according to this utility model.

[0024] Figure 5 This is a schematic diagram of the mover of a linear motor guide rail with V-shaped rollers according to this utility model;

[0025] Figure 6 This is a schematic diagram of a movable base for a linear motor guide rail with V-shaped rollers according to the present invention.

[0026] Figure 7 This is a schematic diagram of a movable base for a linear motor guide rail with V-shaped rollers according to the present invention.

[0027] Figure 8 This is a schematic diagram of the first or second roller of a linear motor guide rail with V-shaped rollers according to this utility model;

[0028] The components in the attached diagram are labeled as follows: 1-Bearing plate; 2-Motor; 21-Silicon steel sheet; 22-Gap; 3-Moving base; 31-Moving frame; 32-Groove plate; 33-Mounting groove; 4-Eccentric bushing; 5-Concentric bushing; 6-First roller; 61-First inclined surface; 62-Second inclined surface; 63-Shaft hole; 7-Second roller; 8-Screw; 9-Guide rail; 91-Groove; 10-Stator assembly; 101-Flat stator; a-First direction; b-Second direction; c-Third direction. Detailed Implementation

[0029] The utility model objective of this utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments. The embodiments cannot be described one by one here, but the implementation of this utility model is not limited to the following embodiments.

[0030] like Figures 1-5As shown in Figure 8, a linear motor guide rail with V-shaped rollers includes a support plate 1, a mover 2, a movable base 3, two eccentric rollers, two concentric rollers, a guide rail 9, and a set of stator assemblies 10. Each eccentric roller includes a screw 8, an eccentric bushing 4, and a first rotating wheel 6. Each concentric roller includes a screw 8, a concentric bushing 5, and a second rotating wheel 7. The support plate 1 is bolted to the top of the movable base 3 to form a mover compartment. The mover 2 is installed inside the mover compartment and extends downward through the bottom of the movable base 3. The two eccentric bushings 4 are respectively installed at the front ends of the movable base 3 by two screws 8. The two eccentric bushings 4 are threadedly connected to the two screws 8, and the tightness of the first rotating wheel 6 and the groove 91 can be adjusted by manually adjusting the relative position of the eccentric bushings 4 and the screws 8. The two first rotating wheels 6 are rotatably connected to the two eccentric bushings 4. The two concentric bushings 5 ​​are respectively installed at the rear ends of the movable base 3 by two screws 8. Two second rotating wheels 7 are rotatably connected to two concentric bushings 5 ​​respectively. The stator assembly 10 is installed in the mounting groove at the top of the guide rail 9, and the mover 2 is located directly above the stator assembly 10. A groove 91 is provided on both inner sides of the guide rail 9. The first rotating wheel 6 is in rolling connection with the groove 91 on the rear side of the guide rail 9, and the second rotating wheel 7 is in rolling connection with the groove 91 on the front side of the guide rail 9.

[0031] The support plate 1 bears external loads (such as workpieces or equipment) and provides a mounting surface. The mover 2 generates electromagnetic force to drive the entire guide rail. It consists of multiple silicon steel sheets 21 with gaps 22 between adjacent sheets to optimize magnetic field response and heat dissipation. The mover 2 passes through the movable base 3 and corresponds to the stator assembly 10, realizing the conversion of electrical energy into mechanical energy. The movable base 3 supports the mover 2 and the support plate 1, providing mounting points for the eccentric rollers and concentric rollers. The movable base 3 includes a movable frame 31 and a slotted plate 32, with mounting slots 33 for the mover 2 to pass through, ensuring precise positioning of the mover 2. The movable base 3 transmits motion to the eccentric rollers and concentric rollers, achieving smooth movement on the guide rail 9. The eccentric rollers provide adjustable guidance and preload, ensuring a tight fit between the eccentric rollers and the grooves 91 of the guide rail 9. The eccentric rollers are finely positioned via eccentric bushings 4 to compensate for wear and maintain stable operation of the guide rail. The eccentric bushing 4, with its hexagonal end, serves as the core component of the eccentric roller, allowing for manual adjustment of the roller's position. It fine-tunes the preload of the first roller 6 in the groove 91, reducing clearance and vibration and improving guide rail life. The first roller 6 rolls within the groove 91 of the guide rail 9, providing guidance and support. It features a first inclined surface 61 and a second inclined surface 62, matching the V-shaped structure of the groove 91 to achieve line contact, reduce noise, and remove impurities. The concentric roller is fixed to the other side of the movable base 3, providing stable guidance. It works in conjunction with the eccentric roller, rolling within the groove 91 to ensure load balance and motion accuracy. The concentric bushing 5 serves as the mounting base for the concentric roller, fixed in position by screws 8. The concentric bushing 5 ensures the concentric rotation of the second roller 7, reducing friction and simplifying maintenance. The second roller 7, rolling within the groove 91, features a third and fourth inclined surface, matching the groove 91. The second roller 7 has the same structure as the first roller 6, providing a cleaning function (such as scraping off dust and chips), suitable for harsh environments. The stator assembly 10 serves as the fixed part of the guide rail, generating a magnetic field to drive the mover 2, achieving efficient energy conversion through electromagnetic induction. The screw 8 is used to fix the concentric bushing 5 and the eccentric bushing 4 to the movable base 3. Grooves 91 are located on both sides of the guide rail 9, and the grooves 91 have a V-shaped structure (90° included angle) to provide a rolling surface. The first roller 6 and the second roller 7 are embedded therein, achieving line contact guidance, reducing installation accuracy requirements, and automatically cleaning impurities.

[0032] like Figure 6 and 7 As shown, the movable base 3 includes a movable frame 31 and a slotted plate 32. The slotted plate 32 is connected to the inner wall of the movable frame 31. The slotted plate 32 is provided with an installation groove 33. The moving part 2 passes through the installation groove 33. The top of the movable frame 31 is connected to the bearing plate 1. Concentric rollers are installed on one side of the movable frame 31. Eccentric bushing 4 is adjustablely installed on the other side of the movable frame 31.

[0033] Working principle: The stator assembly 10 generates a traveling wave magnetic field. The silicon steel sheets 21 of the mover 2 respond to the changes in the magnetic field, generating Lorentz force and achieving linear motion. The silicon steel sheets 21 of the mover 2 are designed with a gap 22 to reduce eddy current losses and improve efficiency. The grooves 91 achieve line contact rolling with the first wheel 6 and the second wheel 7 respectively, reducing friction and noise.

[0034] Working Process Description: Upon power-on, the stator assembly 10, installed within the guide rail 9, generates an alternating magnetic field. Multiple flat stators 101 are sequentially activated, forming a traveling wave magnetic field. The mover 2, passing through the silicon steel sheet 21 of the movable base 3, senses the magnetic field, generating an electromagnetic thrust. Driven by this electromagnetic force, the mover 2 moves along the guide rail 9 in the second direction b. The movable base 3 moves with the mover 2, driving the support plate 1 and the load. The first roller 6 rolls in the groove 91 on one side of the guide rail 9, its first inclined surface 61 and second inclined surface 62 matching the groove 91. The second roller 7 rolls in the groove 91 on the other side, its third and fourth inclined surfaces providing stable support. The line contact design of the first roller 6 and the second roller 7 reduces noise and removes dust from the groove 91. The eccentric bushing 4 allows manual adjustment via the hexagonal end, ensuring the first roller 6 has appropriate preload and preventing slippage or over-tightening. During high-speed movement, the first roller 6 and the second roller 7 continuously clean the groove 91, extending the life of the guide rail. If the eccentric bushing 4, concentric bushing 5, first wheel 6, or second wheel 7 wears out, they can be replaced individually. When the guide rail stops, the power is disconnected, the magnetic field disappears, and the mover 2 comes to a standstill. The bearing plate 1 maintains the load position. The entire process is seamlessly integrated by electromagnetic drive and mechanical guidance. The stator assembly 10 and the mover 2 form the motor section, while the first wheel 6, the second wheel 7, and the groove 91 form the guide rail section, achieving high-precision, low-maintenance linear motion.

[0035] Advantages of a linear motor guide with V-shaped rollers:

[0036] 1. Low noise: The first rotating wheel 6 and the second rotating wheel 7 are in line contact with the groove 91 to reduce vibration, thereby achieving low noise.

[0037] 2. High adaptability: The eccentric bushing 6 can be adjusted to compensate for installation errors.

[0038] 3. Environmental robustness: The first rotor 6 and the second rotor 7 realize self-cleaning grooves 91, thereby resisting dust.

[0039] 4. Efficient maintenance: All components of this guide rail are modular and can be quickly replaced.

[0040] The above-described specific embodiments are preferred embodiments of this utility model and are not intended to limit this utility model. Any other changes or equivalent substitutions made without departing from the technical solution of this utility model are included within the protection scope of this utility model.

Claims

1. A linear motor guide rail with V-shaped rollers, characterized in that: The system includes a support plate (1), a mover (2), a movable base (3), eccentric rollers, concentric rollers, a guide rail (9), and a stator assembly (10). The eccentric rollers include an eccentric bushing (4) and a first rotating wheel (6). The guide rail (9) has grooves (91) on both sides. The support plate (1) is connected to the movable base (3). The mover (2) is installed on the movable base (3) and passes through the bottom of the movable base (3). The concentric rollers are respectively installed on one side of the movable base (3). The first rotating wheel (6) is adjustablely connected to the other side of the movable base (3) through the eccentric bushing (4). The first rotating wheel (6) and the concentric rollers are both embedded in the grooves (91). The stator assembly (10) is installed on the guide rail (9) and corresponds to the mover (2).

2. A linear motor guide rail with V-shaped rollers according to claim 1, characterized in that: The eccentric bushing (4) has a hexagonal end and is installed on the other side of the movable base (3) by screws (8). The eccentric bushing (4) is threadedly connected to the screws (8).

3. A linear motor guide rail with V-shaped rollers according to claim 1, characterized in that: The included angle of the groove (91) is 90°.

4. A linear motor guide rail with V-shaped rollers according to claim 1, characterized in that: The first wheel (6) is provided with a first inclined surface (61) and a second inclined surface (62), and the included angle between the first inclined surface (61) and the second inclined surface (62) is consistent with the included angle of the groove (91).

5. A linear motor guide rail with V-shaped rollers according to claim 1, characterized in that: The concentric roller includes a concentric bushing (5) and a second rotating wheel (7). The second rotating wheel (7) is rotatably connected to the concentric bushing (5). The concentric bushing (5) is installed on one side of the movable base (3) by screws (8).

6. A linear motor guide rail with V-shaped rollers according to claim 5, characterized in that: The second wheel (7) is provided with a third inclined surface and a fourth inclined surface, and the included angle between the third inclined surface and the fourth inclined surface is consistent with the included angle of the groove (91).

7. A linear motor guide rail with V-shaped rollers according to claim 1, characterized in that: The movable base (3) includes a movable frame (31) and a slotted plate (32). The slotted plate (32) is connected to the inner wall of the movable frame (31). The slotted plate (32) is provided with a mounting groove (33). The moving part (2) passes through the mounting groove (33). The top of the movable frame (31) is connected to the bearing plate (1). The concentric roller is installed on one side of the movable frame (31). The eccentric bushing (4) is adjustablely installed on the other side of the movable frame (31).

8. A linear motor guide rail with V-shaped rollers according to claim 1, characterized in that: The stator assembly (10) includes multiple flat stators (101), which are sequentially connected and installed on the guide rail (9). Each of the multiple flat stators (101) corresponds to the mover (2).

9. A linear motor guide rail with V-shaped rollers according to claim 1, characterized in that: The moving part (2) is provided with multiple silicon steel sheets (21), and there is a gap (22) between two adjacent silicon steel sheets (21). The multiple silicon steel sheets (21) pass through the movable base (3).

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