A novel flux reversal linear motor

Abstract

The utility model discloses a novel magnetic flux reverse linear motor, it includes: the slide table, all inside being equipped with air floatation sliding part, and air floatation sliding part is equipped with a plurality of at least along two directions's air hole, the mover, its fixed in the slide table inside, and it includes the mover core and multiple sets setting in the permanent magnet group of the lower end of mover core and multiple sets being located in the coil of the upper of mover core and one to one corresponding distribution in the periphery of permanent magnet group, and the mover core has a plurality of downward convex and interval distribution's armature tooth, and the coil surrounds the periphery of armature tooth, the permanent magnet group inlays fixed in the lower end of armature tooth, and exposes in the lower end surface of armature tooth, as the non -magnetic track of stator, its upper portion is equipped with a plurality of interval distribution's stator tooth pole, and this stator tooth pole is located below permanent magnet group, and forms air gap, and the non -magnetic track outside is equipped with the sliding slot, and air floatation sliding part is loaded into the sliding slot from outside to inside, and air floatation sliding part passes through air hole and sprays gas to the inner wall of sliding slot, makes air film between air floatation sliding part and the inner wall of sliding slot to suspend assembly.

Description

Technical fields:

[0001] This utility model relates to the technical field of linear motor products, and specifically to a novel magnetic flux reverse linear motor. Background technology:

[0002] A linear motor is a transmission device that directly converts electrical energy into linear motion mechanical energy without any intermediate conversion mechanism. Linear motors are also called linear actuators, linear motors, or pushrod motors. Once powered on, these motors can directly generate linear motion, making them particularly suitable for applications requiring linear movement. Compared to traditional rotary motors, linear motors feature high speed, high response, high precision, and direct drive capabilities, and are widely used in industrial automation.

[0003] In recent years, the demand for linear motors has been increasing year by year with a stable growth rate. However, the price of materials (praseodymium and neodymium) required for the permanent magnets of linear motors has been rising continuously. The increasing demand for linear motors with low magnetic strength, high thrust density, high efficiency, high precision, and high reliability has become a favored research direction for researchers in recent years.

[0004] Utility model patent application number 202420211226.5 discloses a non-magnetic track linear motor. This non-magnetic track linear motor includes a motor mover and a motor stator corresponding to the mover. The motor mover includes multiple mover cores connected together, a coil wound around each mover core, and a permanent magnet located at the top of each mover core. The motor stator includes multiple stator poles arranged side-by-side, and stator yokes corresponding to the bottom of the stator poles. The stator yokes of the multiple stator poles are connected as a single unit, and stator slots are located between adjacent stator poles. An auxiliary slot is provided at the top of each stator pole, with the top surface of the auxiliary slot spaced apart from the top of the mover core. This non-magnetic track linear motor solves the problem in traditional non-magnetic track linear motors where cogging effect occurs during operation, generating cogging force that affects the motor's thrust and causes fluctuations during operation.

[0005] However, the aforementioned non-magnetic track linear motor does not disclose the slide rail and the slide table that matches the slide rail, and there is no part on the outside of the motor stator where the slide rail is installed. Therefore, it can be assumed that the motor stator is fixed to a base, with the slide rail installed on the base, and the motor stator mounted on the slide table. A slider is installed on this slide table, and the slider and slide rail are fitted together to form a slidable assembly, thus forming a complete linear motor. However, this structure requires an additional base to install the slide rail, making its structure complex, requiring more materials, and relatively large in size. It cannot meet the needs of environments with limited installation space. Furthermore, the later use of a slider and slide rail to form a slidable assembly results in high friction and low operating accuracy, which is detrimental to improving the product's market competitiveness.

[0006] In view of the above, the inventors propose the following technical solution. Utility Model Content:

[0007] The purpose of this invention is to overcome the shortcomings of the existing technology and provide a novel magnetic flux reverse linear motor.

[0008] To solve the above-mentioned technical problems, this utility model adopts the following technical solution: A novel magnetic flux reverse linear motor includes: a slide table, each having air-bearing sliding parts distributed along its length, each air-bearing sliding part having multiple air holes in at least two directions; a mover, fixed inside the slide table, comprising a mover core, multiple sets of permanent magnets disposed at the lower end of the mover core, and multiple coils disposed on the mover core and correspondingly distributed around the permanent magnets, the mover core having multiple downwardly protruding and spaced-apart components. The armature tooth has a coil surrounding it. The permanent magnet assembly is embedded and fixed at the lower end of the armature tooth and exposed on the lower end face of the armature tooth. The non-magnetic track of the stator has multiple stator tooth poles that are spaced apart and protrude upwards on its upper part. The stator tooth poles are located below the permanent magnet assembly and form an air gap. The non-magnetic track has a sliding groove on its outside. The air-floating sliding part is installed in the sliding groove from the outside to the inside. The air-floating sliding part sprays gas onto the inner wall of the sliding groove through an air hole, so that an air film is formed between the air-floating sliding part and the inner wall of the sliding groove for suspension assembly.

[0009] Furthermore, in the above technical solution, the slide table has an installation groove facing upward along its lower end, and the air-floating sliding part is provided at the lower end of both inner walls of the installation groove; the mover is disposed in the installation groove, and the outer side of the mover is spaced between the two inner walls of the installation groove.

[0010] Furthermore, in the above technical solution, the chute is in the shape of an inverted V, which has two first inclined surfaces that are symmetrical from top to bottom; the outer side of the air-floating sliding part is also in the shape of an inverted V, which has two second inclined surfaces that are symmetrical from top to bottom, and both second inclined surfaces are provided with air holes that are symmetrically distributed from top to bottom. The air-floating sliding part is provided with an air passage that connects to the air holes along its length, and the air passage port is provided with an air nozzle.

[0011] Furthermore, in the above technical solution, the air-bearing sliding part is integrally disposed inside the slide table and is a non-removable part of the slide table; or, the air-bearing sliding part is a component independent of the slide table and is fixed inside the slide table by embedding.

[0012] Furthermore, in the above technical solution, the non-magnetic track is made of soft magnetic material, and a steel rail is inlaid and fixed on its outer side, with the aforementioned groove provided on the outer side of the steel rail.

[0013] Furthermore, in the above technical solution, a Hall module is provided on the front or rear side of the slide table. The Hall module is located above the stator teeth, and the Hall module cooperates with the stator teeth to detect the speed and position of the slide table movement.

[0014] Furthermore, in the above technical solution, each group of permanent magnets consists of a radially magnetized permanent magnet and a first axially magnetized permanent magnet and a second axially magnetized permanent magnet sandwiched on both sides of the radially magnetized permanent magnet. The magnetization direction of the second axially magnetized permanent magnet is axially to the left, toward the radially magnetized permanent magnet, and the magnetization direction of the first axially magnetized permanent magnet is axially to the right, toward the radially magnetized permanent magnet. The magnetization direction of the radially magnetized permanent magnet is radially downward, toward the non-magnetic track, so as to form a Heilbeck array magnetic focusing structure.

[0015] Furthermore, in the above technical solution, a rectangular groove is provided on the lower end face of the armature tooth; the first axially magnetized permanent magnet and the second axially magnetized permanent magnet are respectively attached to the two sides of the radially magnetized permanent magnet and then embedded and fixed in the rectangular groove, with no gap between them.

[0016] Furthermore, in the above technical solution, the longitudinal sections of the first axially magnetized permanent magnet, the second axially magnetized permanent magnet, and the radially magnetized permanent magnet are all rectangular, and their heights are equal to the depth of the rectangular groove. This makes the lower end faces of the first axially magnetized permanent magnet, the second axially magnetized permanent magnet, and the radially magnetized permanent magnet flush with the lower end face of the armature tooth, so that the first axially magnetized permanent magnet, the second axially magnetized permanent magnet, and the radially magnetized permanent magnet are completely embedded in the rectangular groove of the armature tooth. The width of the first axially magnetized permanent magnet and the second axially magnetized permanent magnet are the same, and the width of the first axially magnetized permanent magnet is greater than the width of the radially magnetized permanent magnet.

[0017] Furthermore, in the above technical solution, the moving core 1 is composed of multiple stacked and fixed second silicon steel sheets; the number of armature teeth is 6N, where N is greater than or equal to 1; the extension direction of the stator teeth is perpendicular to the length direction of the non-magnetic track; or, the angle formed by the extension direction of the stator teeth and the length direction of the non-magnetic track is less than 90°, so that the stator teeth are inclinedly distributed on the upper end of the non-magnetic track; the spacing between two adjacent stator teeth is greater than the spacing between two adjacent armature teeth, and the width of the armature teeth is greater than the spacing between two adjacent stator teeth.

[0018] By adopting the above technical solution, this utility model has the following beneficial effects compared with the prior art:

[0019] 1. This utility model integrates both the coil and the permanent magnet assembly onto the mover, thereby reducing the operating cost of the linear motor, increasing the utilization rate of the permanent magnet, and making it suitable for long-stroke applications. Furthermore, the absence of a magnetic track and magnets (i.e., the stator structure contains no magnetism) ensures that the working environment is free from the dangers of strong magnetism, improving the service life of the linear motor, reducing maintenance costs, and significantly reducing the operating cost of the motor in long-stroke applications by minimizing the amount of permanent magnets used, while also ensuring good structural stability.

[0020] 2. When the moving part runs relative to the non-magnetic track (which acts as the stator), the slide table does not directly contact the non-magnetic track; instead, they are suspended by an air film. This results in minimal or even no friction, improving running accuracy and thus enhancing the quality of the linear motor. Furthermore, the linear motor eliminates the need for an additional base to mount the slide rails and sliders, simplifying its structure and reducing material usage. The groove is directly integrated into the outer side of the non-magnetic track, allowing for a smaller overall width and compact size, making it suitable for applications in environments with limited installation space. Attached image description:

[0021] Figure 1 This is a perspective view of the present invention;

[0022] Figure 2 This is a cross-sectional view of the present invention;

[0023] Figure 3 This is an exploded perspective view of the present invention;

[0024] Figure 4 This is an assembly drawing of the slide and the mover in this utility model;

[0025] Figure 5 This is a cross-sectional view from another perspective of this utility model;

[0026] Figure 6 This is a perspective view of the mover in this utility model;

[0027] Figure 7 This is a schematic diagram illustrating the magnetization direction of the permanent magnet assembly in this utility model. Detailed implementation method:

[0028] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0029] See Figure 1-7 As shown, a novel magnetic flux reverse linear motor includes a slide table 5, a mover 100, and a non-magnetic rail 4 serving as a stator. The mover 100 is fixed inside the slide table 5, which is also mounted on the non-magnetic rail 4 and can slide relative to the non-magnetic rail 4.

[0030] The mover 100 includes a mover core 1, multiple sets of permanent magnet groups 2 disposed at the lower end of the mover core 1, and multiple coils 3 disposed on the mover core 1 and distributed one-to-one around the permanent magnet groups 2. The mover core 1 has multiple downward protruding and spaced armature teeth 11, and the coils 3 surround the armature teeth 11. The permanent magnet groups 2 are embedded and fixed at the lower end of the armature teeth 11 and exposed on the lower end face of the armature teeth 11. Correspondingly, the upper part of the non-magnetic track 4 is provided with multiple stator teeth 41 that are spaced apart and protrude upwards. These stator teeth 41 are located below the permanent magnet assembly 2 and form an air gap. This utility model integrates both the coil and the permanent magnet assembly on the mover, which reduces the operating cost of the linear motor, increases the utilization rate of the permanent magnet, and is suitable for long-stroke applications. At the same time, the non-magnetic track 4 has no magnets, that is, the stator structure does not contain magnetism. In actual application environments, this ensures that there is no danger of strong magnetism in the working environment, improves the service life of the linear motor, reduces the maintenance cost of the linear motor, and can significantly reduce the operating cost of the motor in long-stroke applications by reducing the amount of permanent magnets used, while also providing good structural stability.

[0031] Each slide table 5 is internally provided with air-bearing sliding parts 51 distributed along its length. Each air-bearing sliding part 51 is provided with multiple air holes 511 in at least two directions. The non-magnetic rail 4 is externally provided with a slide groove 40. The air-bearing sliding parts 51 are installed in the slide groove 40 from the outside to the inside. The air-bearing sliding parts 51 spray gas onto the inner wall of the slide groove 40 through the air holes 511, so that an air film is formed between the air-bearing sliding parts 51 and the inner wall of the slide groove 40 for suspension assembly. This achieves the air-bearing effect between the mover and the slide table 5. That is, when the mover runs relative to the non-magnetic rail 4, which serves as the stator, the slide table 5 and the non-magnetic rail 4 do not directly contact each other. They are suspended by the air film, resulting in minimal or even no friction. This improves the running accuracy and thus the quality of the linear motor. Furthermore, linear motors do not require additional bases for mounting slide rails, sliders, etc., resulting in a simple structure and less material usage. Additionally, a slide groove 40 is directly provided on the outer side of the non-magnetic track 4, which reduces the width of the entire linear motor, thus making the overall size smaller and enabling it to be used in environments with limited installation space.

[0032] In this embodiment, the slide table 5 has an installation groove 50 extending upward along its lower end surface. The air-bearing sliding part 51 is provided at the lower end of both inner walls of the installation groove 50. The mover 100 is disposed in the installation groove 50, that is, the mover 100 is fixed in the installation groove 50 by being embedded in the mover core 1. The outer side of the mover 100 forms a gap between the two inner walls of the installation groove 50, which provides sufficient space for the assembly of the air-bearing sliding part 51 and the slide groove 40.

[0033] The chute 40 is inverted V-shaped, with two symmetrical first inclined surfaces 401. The outer side of the air-floating sliding part 51 is also inverted V-shaped, with two symmetrical second inclined surfaces 513. Each of the two second inclined surfaces 513 has symmetrically distributed air holes 511, which are arranged in a V-shape. The air-floating sliding part 51 has an air passage 512 along its length connecting the air holes 511, and an air nozzle (not shown in the figure) is provided at the end of the air passage 512. An air pipe is connected to the air source through the air nozzle. Gas is input through the air passage 512 and simultaneously injected through the air holes 511 onto the two symmetrical first inclined surfaces 401, thereby forming an air film. The air holes 511 have a microporous structure, and the pore diameter of the air holes 511 is smaller than that of the air passage 512. As a result, the pressure of the gas increases after it is ejected through the air holes 511, thus forming a more stable air film and improving the suspension effect.

[0034] The air flotation sliding part 51 is configured in at least the following two ways:

[0035] The first type is: the air-float sliding part 51 is integrally set inside the slide table 5 and is a non-removable part of the slide table 5. Its structure is simple and stable and does not require assembly, but it is more difficult to open the air hole 511, air passage 512 and other parts.

[0036] The second method involves an air-bearing sliding part 51 that is an independent component relative to the slide table 5. It is fixed inside the slide table 5 by an inlay method. Its structure is relatively complex, but the opening of air holes 511 and air passages 512 is relatively simple. As a preferred embodiment, the second method is adopted.

[0037] The non-magnetic track 4 is made of soft magnetic material, and a steel rail 42 is inlaid and fixed on its outer side. The outer side of the steel rail 42 is provided with the aforementioned groove 40, which can increase the strength of the groove 40. When not in use with power on, the groove 40 can more stably support the positioning air-bearing sliding part 51.

[0038] A Hall module 53 is provided on the front or rear side of the slide table 5. This Hall module 53 is located above the stator teeth 41, and it works in conjunction with the stator teeth 41 to detect the speed and position of the slide table 5. In other words, since the stator teeth 41 are arranged at regular intervals on the non-magnetic track 4, which is similar to a grating ruler, the Hall element of the Hall module 53 can identify these stator teeth 41 for line finding and act as an encoder, thereby detecting the speed and position of the slide table 5 – a technology already in use. Simultaneously, this reduces the need for grating rulers, encoders, and other structures, allowing for a smaller linear motor, achieving high integration and miniaturization, and meeting the requirements of environments with limited space. In other words, by using the Hall module to identify the stator teeth 41, the grating ruler and encoder are eliminated, significantly reducing the installation space required. This allows for application in many structures with limited installation space, ensuring overall strength while saving space.

[0039] Each group of permanent magnets 2 consists of a radially magnetized permanent magnet 21 and a first axially magnetized permanent magnet 22 and a second axially magnetized permanent magnet 23 sandwiched on both sides of the radially magnetized permanent magnet 21. The magnetization direction of all permanent magnets in each group of permanent magnets 21 is different. Specifically, the magnetization direction of the second axially magnetized permanent magnet 23 is axially to the left, towards the radially magnetized permanent magnet 21; the magnetization direction of the first axially magnetized permanent magnet 22 is axially to the right, towards the radially magnetized permanent magnet 21. The magnetization direction of the permanent magnet 21 is radially downward, toward the non-magnetic track 4, to form a Halbach array magnetic focusing structure. The arrangement of the radially magnetized permanent magnet 21, the first axially magnetized permanent magnet 22, and the second axially magnetized permanent magnet 23 makes the magnetic field lines of each group of permanent magnets distributed in the middle. Compared with ordinary permanent magnet array combinations, this structure belongs to the Halbach type (Haelbeck array) magnetic focusing structure. The characteristic of this structure is that the magnetic flux density increases on the side near the air gap and decreases on the side away from the air gap.

[0040] The lower end face of the armature tooth 11 is provided with a rectangular groove 111; the first axially magnetized permanent magnet 22 and the second axially magnetized permanent magnet 23 are respectively attached to the two sides of the radially magnetized permanent magnet 21 and then embedded and fixed in the rectangular groove 111, with no gap between them. The assembly structure is simple and stable, and the mechanical air gap is smaller than that of the permanent magnet directly attached to the lower surface of the armature tooth 11. In addition, the mover core is composed of multiple stacked and fixed second silicon steel sheets. The magnetic permeability of the second silicon steel sheets is higher than that of air, which is beneficial to improving the thrust density and air gap magnetic flux density of the motor, reducing thrust fluctuation, and thus better meeting the application scenarios of high thrust, making this utility model more competitive in the market.

[0041] In this embodiment, the rectangular groove 111 passes through the front and rear end faces of the armature tooth 11, and the front and rear end faces of the first axially magnetized permanent magnet 22, the second axially magnetized permanent magnet 23, and the radially magnetized permanent magnet 21 are flush with the front and rear end faces of the armature tooth 11. The coil 3 is fitted and wrapped around the front and rear end faces of the first axially magnetized permanent magnet 22, the second axially magnetized permanent magnet 23, and the radially magnetized permanent magnet 21.

[0042] In some embodiments, an annular groove is provided around the armature tooth 11, the coil 3 is enclosed in the annular groove, and the annular groove can limit the coil 3 to a certain extent, which can ensure the stability of the assembly structure.

[0043] The longitudinal sections of the first axially magnetized permanent magnet 22, the second axially magnetized permanent magnet 23, and the radially magnetized permanent magnet 21 are all rectangular, and their heights are equal to the depth of the rectangular groove 111. This makes the lower end faces of the first axially magnetized permanent magnet 22, the second axially magnetized permanent magnet 23, and the radially magnetized permanent magnet 21 flush with the lower end face of the armature tooth 11, so that the first axially magnetized permanent magnet 22, the second axially magnetized permanent magnet 23, and the radially magnetized permanent magnet 21 are completely embedded in the rectangular groove 111 of the armature tooth 11. The width of the first axially magnetized permanent magnet 22 and the second axially magnetized permanent magnet 23 is the same, and the width of the first axially magnetized permanent magnet 22 is greater than the width of the radially magnetized permanent magnet 21.

[0044] The extension direction of the stator tooth pole 41 is perpendicular to the length direction of the non-magnetic track 4; or, the angle formed by the extension direction of the stator tooth pole 41 and the length direction of the non-magnetic track 4 is less than 90°, so that the stator tooth pole 41 is inclinedly distributed on the upper end of the non-magnetic track 4; the use of inclined stator tooth pole 41 (i.e., skewed pole) can reduce the high thrust fluctuation brought about by the linear motor, that is, solve the problem of high magnetic resistance caused by the mover of the linear motor due to the disconnection on both sides and the double salient pole structure, which is conducive to optimizing the performance of the linear motor.

[0045] The spacing between two adjacent stator tooth poles 41 is larger than the spacing between two adjacent armature teeth 11, and the width of the armature teeth 11 is larger than the spacing between two adjacent stator tooth poles 41. This allows the mover to cut the magnetic flux density lines better during operation, increasing the thrust density of the linear motor and thus improving its thrust performance. The aforementioned magnetic flux density, also known as magnetic induction intensity, is an important physical quantity describing the strength and direction of a magnetic field.

[0046] The armature teeth 11 are 6N in number, where N is greater than or equal to 1. In this embodiment, N equals 1, that is, the number of armature teeth 11 is 6. In other words, each mover 100 contains six groups of permanent magnets. Each group of permanent magnets consists of three permanent magnets (i.e., radially magnetized permanent magnet 21, first axially magnetized permanent magnet 22, and second axially magnetized permanent magnet 23). The magnetization directions of the three permanent magnets are different. Specifically, the magnetization direction of the second axially magnetized permanent magnet 23 is axially to the left, the magnetization direction of the first axially magnetized permanent magnet 22 is axially to the right, toward the radially magnetized permanent magnet 21, and the magnetization direction of the radially magnetized permanent magnet 21 is radially downward. The arrangement of the radially magnetized permanent magnet 21, the first axially magnetized permanent magnet 22, and the second axially magnetized permanent magnet 23 makes the magnetic field lines of each group of permanent magnets distributed in the middle. Compared with ordinary permanent magnet array combinations, this structure belongs to the Halbach-type magnetic concentration structure. The characteristic of this structure is that the magnetic flux density increases on the side near the air gap and decreases on the side away from the air gap.

[0047] In other words, the mover 100 in this invention uses three permanent magnets in different directions to form a unit (i.e., a permanent magnet group). Each mover's armature tooth 11 contains one unit, and each mover has six armature teeth or multiples of six. It can be switched at will to produce movers of different lengths to adapt to different application scenarios under different thrust conditions. Each permanent magnet group has three different magnetization directions, but the directions are concentrated at the midpoint, which improves the utilization rate of the permanent magnets, resulting in an increase in magnetic flux density on the side closer to the air gap and a decrease in magnetic flux density on the side away from the air gap.

[0048] Of course, the above description is only a specific embodiment of the present utility model and is not intended to limit the scope of the present utility model. All equivalent changes or modifications made to the structure, features and principles described in the claims of the present utility model should be included in the scope of the claims of the present utility model.

Claims

1. A novel magnetic flux-reversing linear motor, characterized in that: It includes: The slide (5) is provided with air-floating sliding parts (51) distributed along its length direction. Each air-floating sliding part (51) is provided with a plurality of air holes (511) in at least two directions. The mover (100) is fixed inside the slide (5). It includes a mover core (1), multiple sets of permanent magnet groups (2) disposed at the lower end of the mover core (1), and multiple coils (3) disposed on the mover core (1) and distributed one-to-one around the permanent magnet groups (2). The mover core (1) has multiple downward protruding and spaced armature teeth (11). The coils (3) surround the armature teeth (11). The permanent magnet groups (2) are embedded and fixed at the lower end of the armature teeth (11) and exposed on the lower end face of the armature teeth (11). The non-magnetic track (4) of the stator has multiple stator teeth (41) arranged at intervals and protruding upwards on its upper part. The stator teeth (41) are located below the permanent magnet assembly (2) and form an air gap. The non-magnetic track (4) has a sliding groove (40) on its outside. The air-floating sliding part (51) is installed in the sliding groove (40) from the outside to the inside. The air-floating sliding part (51) sprays gas to the inner wall of the sliding groove (40) through the air hole (511) so that an air film is formed between the air-floating sliding part (51) and the inner wall of the sliding groove (40) for suspension assembly.

2. The novel magnetic flux reverse linear motor according to claim 1, characterized in that: The slide (5) has an installation groove (50) facing upward along its lower end. The air-floating sliding part (51) is provided at the lower end of both inner walls of the installation groove (50). The mover (100) is disposed in the installation groove (50), and the outer side of the mover (100) is spaced between the two inner walls of the installation groove (50).

3. A novel magnetic flux reverse linear motor according to claim 1, characterized in that: The chute (40) is in the shape of an inverted V and has two first inclined surfaces (401) that are symmetrical about the top and bottom. The outer side of the air-floating sliding part (51) is in the shape of an inverted V and has two second inclined surfaces (513) that are symmetrical about the top and bottom. Both second inclined surfaces (513) are provided with air holes (511) that are symmetrically distributed about the top and bottom. The air-floating sliding part (51) is provided with an air passage (512) that connects to the air holes (511) along its length direction. The air passage (512) is provided with an air nozzle at its port.

4. A novel magnetic flux reverse linear motor according to claim 3, characterized in that: The air-float sliding part (51) is integrally disposed inside the slide table (5) and is a non-removable part of the slide table (5); or, the air-float sliding part (51) is a component independent of the slide table (5) and is fixed inside the slide table (5) by embedding.

5. A novel magnetic flux reverse linear motor according to any one of claims 1-4, characterized in that: The non-magnetic track (4) is made of soft magnetic material, and a steel rail (42) is inlaid and fixed on its outer side. The groove (40) is provided on the outer side of the steel rail (42).

6. A novel magnetic flux reverse linear motor according to claim 5, characterized in that: A Hall module (53) is provided on the front or rear side of the slide (5). The Hall module (53) is located above the stator tooth pole (41), and the Hall module (53) cooperates with the stator tooth pole (41) to detect the speed and position of the slide (5).

7. A novel magnetic flux reverse linear motor according to claim 5, characterized in that: Each group of permanent magnets (2) consists of a radially magnetized permanent magnet (21) and a first axially magnetized permanent magnet (22) and a second axially magnetized permanent magnet (23) sandwiched on both sides of the radially magnetized permanent magnet (21). The magnetization direction of the second axially magnetized permanent magnet (23) is axially to the left, toward the radially magnetized permanent magnet (21). The magnetization direction of the first axially magnetized permanent magnet (22) is axially to the right, toward the radially magnetized permanent magnet (21). The magnetization direction of the radially magnetized permanent magnet (21) is radially downward, toward the non-magnetic track (4), so as to form a Heilbeck array magnetic focusing structure.

8. A novel magnetic flux reverse linear motor according to claim 7, characterized in that: The lower end face of the armature tooth (11) is provided with a rectangular groove (111); the first axially magnetized permanent magnet (22) and the second axially magnetized permanent magnet (23) are respectively attached to the two sides of the radially magnetized permanent magnet (21) and then embedded and fixed in the rectangular groove (111), with no gap between them.

9. A novel magnetic flux reverse linear motor according to claim 8, characterized in that: The longitudinal sections of the first axially magnetized permanent magnet (22), the second axially magnetized permanent magnet (23), and the radially magnetized permanent magnet (21) are all rectangular, and their heights are equal to the depth of the rectangular groove (111). This makes the lower end faces of the first axially magnetized permanent magnet (22), the second axially magnetized permanent magnet (23), and the radially magnetized permanent magnet (21) flush with the lower end face of the armature tooth (11). This makes the first axially magnetized permanent magnet (22), the second axially magnetized permanent magnet (23), and the radially magnetized permanent magnet (21) completely embedded in the rectangular groove (111) of the armature tooth (11). The width dimensions of the first axially magnetized permanent magnet (22) and the second axially magnetized permanent magnet (23) are the same, and the width dimension of the first axially magnetized permanent magnet (22) is greater than the width dimension of the radially magnetized permanent magnet (21).

10. A novel magnetic flux reverse linear motor according to claim 5, characterized in that: The moving core 1 is composed of multiple stacked and fixed second silicon steel sheets; the number of armature teeth (11) is 6N, where N is greater than or equal to 1; the extension direction of the stator tooth pole (41) is perpendicular to the length direction of the non-magnetic rail (4); or, the angle formed by the extension direction of the stator tooth pole (41) and the length direction of the non-magnetic rail (4) is less than 90°, so that the stator tooth pole (41) is inclinedly distributed on the upper end of the non-magnetic rail (4); the spacing between two adjacent stator tooth poles (41) is greater than the spacing between two adjacent armature teeth (11), and the width of the armature tooth (11) is greater than the spacing between two adjacent stator tooth poles (41).

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