A base and guide rail integrated linear motor module

Abstract

This invention discloses an integrated linear motor module with a base and guide rail, belonging to the technical field of linear motor modules. The integrated linear motor module includes a base with eight steel strip grooves on its front and rear sides, arranged in four rows. Grinding steel strips are fixedly installed on the base at the positions of the steel strip grooves. A motor magnet is bolted to the upper center of the base. A slide is provided on the upper side of the base. The structure with grinding steel strips, employing a two-point contact structure between steel balls and grinding steel strips, and the four-row arrangement, ensures equal load in four directions, resulting in higher rigidity and load capacity while saving steel. The slide has multiple sliders on its lower side, allowing for easy disassembly and replacement by operators, providing excellent interchangeability and facilitating future maintenance.

Description

Technical Field

[0001] This invention relates to the field of linear motor module technology, and more specifically, to a linear motor module with an integrated base and guide rail. Background Technology

[0002] The working principle of a linear motor module is based on the law of electromagnetic induction, achieving linear motion through the electromagnetic force between the stator and the mover. Specifically, a linear motor module consists of a stator and a mover. The stator is usually fixed to the bed or slide, while the mover is connected to the worktable or equipment. When an alternating current is passed through the stator winding, a magnetic field is generated in the mover core, thereby causing the mover to move linearly.

[0003] Chinese patent discloses an integrated linear motor module (authorization announcement number CN112491236B), including a linear motor body, multiple sliding structures, and a base. The linear motor body includes a slider, and the base includes a base plate and side plates. The side plates are fixedly connected to the base plate, and the slider is slidably connected to the side plates through multiple sliding structures. The multiple sliding structures are arranged in parallel and the plane formed by them is parallel to the base plate. This linear motor module increases the load-bearing capacity of the linear motor module by increasing the sliding connection between the slider and the base through multiple sliding structures. The parallel arrangement of multiple sliding structures makes the overall height of the linear motor module low, thus improving its stability and shock resistance. However, the slider is integrated into the slide table, which makes it prone to damage after a period of use. Specially made sliders have high maintenance costs, and the slide rail is a horizontal structure, which is prone to deformation and damage due to uneven stress after long-term use. Summary of the Invention

[0004] The purpose of this invention is to provide a linear motor module with an integrated base and guide rail to solve the problems mentioned in the background art.

[0005] A linear motor module integrating a base and guide rail includes a device base. Eight steel strip grooves are formed on the front and rear sides of the device base, arranged in four rows. Grinding steel strips are fixedly installed on the device base at the positions of the steel strip grooves. A motor magnet is fixedly installed on the upper center of the device base via bolts. A slide is provided on the upper side of the device base. A motor coil is fixedly installed on the lower center of the slide via bolts. Four sliders are fixedly installed on the front and rear sides of the lower end of the slide. An encoder assembly is fixedly installed on the rear side of the slide. A photoelectric baffle is fixedly installed on the front center of the slide.

[0006] The inner cavity of the slider is provided with an arc-shaped steel ball groove, and steel balls are arranged between the steel ball groove and the grinding steel strip. Three photoelectric components are arranged on the front side of the device base.

[0007] Furthermore, the device base is a U-shaped aluminum component. The inner cavity width of the U-shaped device base can be adjusted according to the size of the motor magnet and the motor coil. The front and rear upper sides of the device base are provided with four symmetrical steel strip grooves. The steel strip grooves have an eight-shaped groove structure. The grinding steel strips are attached and fixed to the inner wall of the steel strip grooves. The eight-shaped grinding steel strips enable the four rows of sliding guide components to form four-way equal load support.

[0008] By adopting the above technical solution, the grinding steel strips arranged in a figure-eight shape can make the force between components more uniform and extend the service life of the device.

[0009] Furthermore, the encoder assembly includes an encoder bracket fixedly installed on the rear side of the slide table, with an encoder fixedly installed at the lower end of the encoder bracket. The encoder works in conjunction with a magnetic scale to collect the position, movement speed, and acceleration parameters of the slide table in real time.

[0010] By adopting the above technical solution, the encoder can monitor parameters such as position, speed, and acceleration in real time.

[0011] Furthermore, a pair of module end caps are fixedly installed at the front and rear ends of the device base. Four anti-collision blocks are fixedly installed on the opposite side of the module end caps. The anti-collision blocks are made of elastic rubber, and the four anti-collision blocks correspond to the four corner positions at the front and rear ends of the slide table. The height of the anti-collision blocks is adapted to the height of the slide table.

[0012] By adopting the above technical solution, the module end cap can seal both ends of the device base, and the anti-collision block can buffer and protect the slide.

[0013] Furthermore, two photoelectric components are provided on one side of the front of the device base, and one photoelectric component is provided on the other side of the front of the device base. The photoelectric component includes a photoelectric sensor bracket fixedly installed on the front of the device base. A photoelectric sensor is fixedly installed on the upper side of the photoelectric sensor bracket. When the photoelectric baffle moves with the slide table, it can block the light of the photoelectric sensor to trigger a control signal.

[0014] By adopting the above technical solution, when the photoelectric baffle passes over the photoelectric sensor, the photoelectric sensor can sense the position of the photoelectric baffle. When the photoelectric baffle blocks the light of the photoelectric sensor, the control system controls and adjusts the whole system according to this signal.

[0015] Furthermore, a magnetic scale is fixedly installed at the rear center of the device base. The length of the magnetic scale is the same as the length of the device base, and the center line of the magnetic scale is collinear with the center line of the device base.

[0016] By adopting the above technical solution, the magnetic grating ruler can accurately reflect the movement position of the slide table, and has the characteristics of high reliability, high precision and long life.

[0017] Furthermore, a module top cover is fixedly installed on the upper side of the module end cover by bolts.

[0018] By adopting the above technical solution, the module cover can provide a certain degree of sealing and protection, effectively preventing foreign objects from entering the device.

[0019] Compared with the prior art, the advantages of this invention are:

[0020] 1. In this invention, by setting a structure with grinding steel strips, adopting a two-point contact structure between steel balls and grinding steel strips, and a four-row arrangement structure, equal load is applied in four directions, resulting in higher rigidity, higher load capacity, and greater steel saving.

[0021] 2. In this invention, by providing a slide table structure with multiple slider structures on the lower side of the slide table, operators can easily disassemble and replace them, which has good interchangeability and facilitates later maintenance. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of the present invention;

[0023] Figure 2 This is an exploded view of the overall structure of the present invention;

[0024] Figure 3 This is a cross-sectional view of the slide table of the present invention.

[0025] The following are the labels in the diagram: 1. Slide table; 2. Module top cover; 3. Module end cover; 4. Photoelectric sensor; 5. Photoelectric sensor bracket; 6. Slider; 7. Photoelectric baffle; 8. Device base; 9. Encoder; 10. Magnetic scale; 11. Motor magnet; 12. Motor coil; 13. Anti-collision block; 14. Encoder bracket; 15. Grinding steel strip; 16. Steel strip groove; 17. Steel ball; 18. Steel ball groove. Detailed Implementation

[0026] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0027] like Figure 1 - Figure 3As shown, the embodiment of the present invention provides: a device base 8, eight steel strip grooves 16 are provided on the front and rear sides of the device base 8, the steel strip grooves 16 are arranged in four rows, grinding steel strips 15 are fixedly installed on the device base 8 at the position of the steel strip grooves 16, a motor magnet 11 is fixedly installed on the upper middle part of the device base 8 by bolts, a slide table 1 is provided on the upper side of the device base 8, a motor coil 12 is fixedly installed on the lower middle part of the slide table 1 by bolts, four sliders 6 are fixedly installed on the front and rear sides of the lower end of the slide table 1, an encoder assembly is fixedly installed on the rear side of the slide table 1, and a photoelectric baffle 7 is fixedly installed on the front middle part of the slide table 1;

[0028] The inner cavity of the slider 6 is provided with an arc-shaped steel ball groove 18, and a steel ball 17 is provided between the steel ball groove 18 and the grinding steel strip 15. Three photoelectric components are provided on the front side of the device base 8.

[0029] The device base 8 is a U-shaped aluminum component. Four symmetrical steel strip grooves 16 are provided on both the front and rear upper sides of the device base 8. The steel strip grooves 16 have an eight-shaped groove structure. The eight-shaped grinding steel strips 15 can make the force between the components more uniform and extend the service life of the device.

[0030] The encoder assembly is fixedly installed on the encoder bracket 14 on the rear side of the slide table 1. The encoder 9 is fixedly installed on the lower end of the encoder bracket 14. The encoder 9 can be used to monitor parameters such as position, moving speed and acceleration in real time.

[0031] A pair of module end caps 3 are fixedly installed at the front and rear ends of the device base 8. Four anti-collision blocks 13 are fixedly installed on the opposite side of the module end caps 3. The anti-collision blocks 13 are made of elastic rubber, and the four anti-collision blocks 13 correspond to the four corner positions of the front and rear ends of the slide table 1. The height of the anti-collision blocks 13 is adapted to the height of the slide table 1. The module end caps 3 can seal the two ends of the device base 8, and the anti-collision blocks 13 can buffer and protect the slide table 1.

[0032] Two photoelectric components are provided on one side of the front of the device base 8, and one photoelectric component is provided on the other side of the front of the device base 8. The photoelectric components are fixedly installed on the photoelectric sensor bracket 5 on the front of the device base 8. A photoelectric sensor 4 is fixedly installed on the upper side of the photoelectric sensor bracket 5. When the photoelectric baffle 7 passes over the upper side of the photoelectric sensor 4, the photoelectric sensor 4 can sense the position of the photoelectric baffle 7. When the photoelectric baffle 7 blocks the light of the photoelectric sensor 4, the control system controls and adjusts the whole according to this signal.

[0033] A magnetic scale 10 is fixedly installed in the middle of the rear side of the device base 8. The magnetic scale 10 can accurately reflect the movement position of the slide table 1 and has the characteristics of high reliability, high precision and long life.

[0034] The module end cover 3 is fixedly installed with a module top cover 2 by bolts. The module top cover 2 can provide a certain degree of sealing protection for the inside, effectively preventing foreign objects from entering the device.

[0035] Working principle of this invention: The installer locks the device base 8 onto a high-precision marble worktable. The device base 8 has a "U"-shaped structure, with four steel strip grooves 16 on the upper sides of both sides. Four grinding steel strips 15 are embedded inside each of the steel strip grooves 16. The grinding steel strips 15 are bonded to the device base 8 with strong adhesive. The operator slides four sliders 6 into the front and rear sides of the device base 8. The inner wall of the slider 6 has steel ball grooves 18 corresponding to the grinding steel strips 15. Steel balls 17 are placed between the grinding steel strips 15 and the steel ball grooves 18. The inner wall of the slider 6 has good parallelism with the upper side of the device base 8. The four sliders 6 and the grinding steel strips 15 are in contact through the steel balls 17 inside the slider 6 and the eight grinding steel strips 15, minimizing friction and ensuring smooth operation while maintaining high rigidity. Furthermore, the V-shaped arrangement of the grinding steel strips 15 makes the force distribution between components more even, resulting in equal loads in four directions, higher rigidity, higher load capacity, and also saving steel and reducing costs. To extend the lifespan of the device, the slide table 1 and four sliders 6 are then connected with bolts. After confirming smooth operation, the motor coil 12 is fixedly installed at the bottom of the slide table 1 with bolts. The encoder assembly is then installed and fixed with bolts. The device base 8 and motor magnet 11 are then fixedly connected with bolts, ensuring that there is an air gap between the motor coil 12 and the motor magnet 11. This ensures that the mechanical connection between the slider 6 and the device base 8 consists only of the steel ball groove 18 and the grinding steel strip 15. Finally, the magnetic scale 10 is attached to the middle of the rear side of the device base 8 at the specified height. The two module end caps 3, four anti-collision blocks 13, three sets of photoelectric components, module top cover 2, and device base 8 are fixedly connected with bolts to complete the assembly of the device. Since the slider 6 has a universal structure, it can be easily disassembled and replaced by the operator, providing good interchangeability and facilitating later maintenance. The motor coil 12 and motor magnet 11 are located in the inner cavity of the "U"-shaped device base 8. The width of the inner cavity of the device base 8 can be changed according to actual needs to accommodate the installation of various linear motors.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A linear motor module with an integrated base and guide rail, comprising a device base (8), characterized in that: The device base (8) has eight steel strip grooves (16) on its front and rear sides. The steel strip grooves (16) are arranged in four rows. Grinding steel strips (15) are fixedly installed on the device base (8) at the position of the steel strip grooves (16). A motor magnet (11) is fixedly installed on the upper middle part of the device base (8) by bolts. A slide table (1) is provided on the upper side of the device base (8). A motor coil (12) is fixedly installed on the lower middle part of the slide table (1) by bolts. Four sliders (6) are fixedly installed on the front and rear sides of the lower end of the slide table (1). An encoder assembly is fixedly installed on the rear side of the slide table (1). A photoelectric baffle (7) is fixedly installed on the front middle part of the slide table (1). The inner cavity of the slider (6) is provided with an arc-shaped steel ball groove (18). A steel ball (17) is provided between the steel ball groove (18) and the grinding steel strip (15). The steel ball (17) and the grinding steel strip (15) are in contact at two points. The grinding steel strip (15) is arranged in four rows to ensure equal load in four directions. Three photoelectric components are provided on the front side of the device base (8). The device base (8) is a "U" shaped aluminum component. Four symmetrical steel strip grooves (16) are provided on both the front and rear upper sides of the device base (8). The steel strip grooves (16) are figure-eight shaped slotted structures. The grinding steel strips (15) are attached and fixed to the inner wall of the steel strip grooves (16). The figure-eight shaped grinding steel strips (15) enable the four rows of sliding guide components to form four-way equal load support.

2. The linear motor module integrating base and guide rail according to claim 1, characterized in that: The encoder assembly includes an encoder bracket (14) fixedly installed on the rear side of the slide (1). An encoder (9) is fixedly installed at the lower end of the encoder bracket (14). The encoder (9) cooperates with the magnetic scale (10) to collect the position, moving speed and acceleration parameters of the slide (1) in real time.

3. The linear motor module integrating base and guide rail according to claim 1, characterized in that: A pair of module end caps (3) are fixedly installed at the front and rear ends of the device base (8), and four anti-collision blocks (13) are fixedly installed on the opposite side of the module end caps (3).

4. A linear motor module integrating a base and guide rail according to claim 3, characterized in that: The anti-collision block (13) is made of elastic rubber, and the four anti-collision blocks (13) correspond to the four corner positions at the front and rear ends of the slide (1), respectively. The height of the anti-collision block (13) is adapted to the height of the slide (1).

5. A linear motor module integrating a base and guide rail according to claim 1, characterized in that: Two photoelectric components are provided on one side of the front of the device base (8), and one photoelectric component is provided on the other side of the front of the device base (8). The photoelectric component includes a photoelectric sensor bracket (5) fixedly installed on the front of the device base (8). A photoelectric sensor (4) is fixedly installed on the upper side of the photoelectric sensor bracket (5). When the photoelectric baffle (7) moves with the slide (1), it can block the light of the photoelectric sensor (4) to trigger the control signal.

6. A linear motor module integrating a base and a guide rail according to claim 1, characterized in that: A magnetic scale (10) is fixedly installed on the middle rear side of the device base (8).

7. A linear motor module integrating a base and guide rail according to claim 3, characterized in that: The module end cap (3) is fixedly installed with a module top cap (2) by bolts on the upper side.

8. A linear motor module integrating a base and a guide rail according to any one of claims 1-7, characterized in that: The inner width of the U-shaped device base (8) can be adjusted according to the size of the motor magnet (11) and the motor coil (12).

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