Guide mechanisms for linear motors

Abstract

The present invention discloses a guide mechanism for a linear motor, which includes a rail beam, a slide and two rolling bearing units. The inner walls on both sides of the rail beam are provided with guide rail grooves, and the rolling bodies on the outer sides of the rolling bearing units are partially embedded in the guide rail grooves. The two rolling bearing units are fixed to the two sides of the lower end of the slide in a manner that the relative positions can be adjusted. The guide mechanism for the linear motor also includes an adjustment mechanism for driving the two rolling bearing units to move outward to adjust the gap between the rolling bodies and the guide rail grooves. The present invention adopts two rolling bearing units, and the slide stably slides on the rail beam through the rolling bearing units. The adjustment mechanism added in the present invention can drive the two rolling bearing units to move outward synchronously relative to the slide, so as to adjust the gap between the rolling bodies in the rolling bearing units and the guide rail grooves, and can eliminate the gap between the rolling bodies and the guide rail grooves to eliminate the jumping during movement, thereby ensuring the accuracy and stability of the operation.

Description

Technical field:

[0001] The present invention relates to the field of guide drive technology, in particular to a guide mechanism for a linear motor which is easy to process, convenient to install, and capable of adjusting the gap to improve the running stability and accuracy. Background technology:

[0002] In the processing and manufacturing industry, with the increase in labor costs and the advancement of science and technology, automated processing equipment is becoming more and more popular, and linear motor products have been widely used in the field of automation.

[0003] A linear motor is a transmission device that converts electrical energy directly into mechanical energy for linear motion by expanding a closed magnetic field into an open magnetic field, without the need for any intermediate conversion mechanism. Simply put, a linear motor is an expanded rotary servo motor. Imagine a rotating induction motor cut radially and the stator and rotor circumferences expanded into a straight line. This creates the simplest iron-core linear induction motor.

[0004] As a key component of a linear motor, a Chinese invention patent application, published with application number CN111917272A, discloses a linear motor slide. The slide primarily consists of a rail and a seat. The rail incorporates a flat linear motor stator, while the seat incorporates a flat linear motor mover. The slide reciprocates on the rail through the electromagnetic force between the stator and the mover. The seat comprises a body with an n-type slot structure. A slide raceway is designed on the outside of the body, positioned opposite the rail raceway. Several steel balls are positioned between the slide raceway and the rail raceway. Two through-holes are designed on either side of the body, positioned opposite the slide raceway. Threaded holes are provided at each end of the body. The body connects to a ball reversing device via the threaded holes, allowing the steel balls to roll endlessly between the slide raceway, the ball reversing device, and the through-holes.

[0005] That is, a set of steel balls is formed on both sides of the slide seat, and the steel balls are embedded in the rail body raceway and the slide seat raceway of the slide rail. During assembly, they can only be embedded and installed from the end face of the slide rail. However, since a small gap is required between the steel balls and the rail body raceway of the slide rail, and it is necessary to ensure that the steel balls do not fall out of the slide seat raceway, it is difficult to install the steel balls, and the assembly efficiency is extremely low, which is not conducive to improving market competitiveness. In addition, after the above assembly is completed, the gap between the steel balls and the rail body raceway of the slide rail cannot be adjusted, resulting in an inability to adjust the operating accuracy. At the same time, the excessive gap will cause the slide seat to shake / jump relative to the slide rail, affecting the stability and smoothness of the operation, and also affecting the operating accuracy, causing great trouble to the manufacturer.

[0006] In addition, the above-mentioned slide body and the two steel ball reversing devices respectively arranged on both sides of the slide body serve as a base, and the base cooperates with a plurality of steel balls to form a rolling bearing unit. Therefore, the base of the rolling bearing unit in the above-mentioned linear motor slide adopts a simple three-section structure of front, middle and rear, wherein the slide body located in the middle is provided with a through hole and the slide body raceway located on the outside, and the through hole is designed in parallel with the slide body raceway, and the two steel ball reversing devices are both provided with a C-shaped or U-shaped reverse rotation hole for the steel balls to pass through, thereby realizing reverse operation (i.e., turning from the through hole to the slide body raceway). The above rolling bearing unit has a complex structure and a large number of parts, especially the front, middle and rear three sections of raceways and the load-bearing surface. Objectively, there are difficulties in processing and limited improvement in precision, and installation is not convenient enough, especially in the steel ball reversing device. It is extremely troublesome to set a C-shaped or U-shaped reverse rotation hole. Therefore, this structure has limited processing precision and increases the production cost of the rolling bearing unit.

[0007] In view of this, the inventors propose the following technical solutions. Summary of the invention:

[0008] The purpose of the present invention is to overcome the deficiencies of the prior art and provide a guide mechanism for a linear motor.

[0009] In order to solve the above technical problems, the present invention adopts the following first technical solution: the guide mechanism for the linear motor includes a rail beam, a slide and two rolling bearing units, the inner walls on both sides of the rail beam are provided with guide rail grooves, the rolling bodies on the outer sides of the rolling bearing units are partially embedded in the guide rail grooves, the two rolling bearing units are fixed to the two sides of the lower end of the slide in a manner that can adjust their relative positions, and the guide mechanism for the linear motor also includes an adjustment mechanism for driving the two rolling bearing units to move outward to adjust the gap between the rolling bodies and the guide rail grooves; the rolling bearing units The element includes a base and a plurality of rolling bodies arranged in the base and capable of rolling along the gyroscopic groove cavity in the base. One side of the gyroscopic groove cavity has a window for accommodating the partial exposure of the rolling body. The base is composed of an upper base and a lower base fixed together; the docking surfaces of the upper base and the lower base are respectively provided with a first gyroscopic groove body and a second gyroscopic groove body with a semicircular cross-section, and the first gyroscopic groove body and the second gyroscopic groove body are docked to form the oblong gyroscopic groove cavity; and the window is formed after the first opening on one side of the first gyroscopic groove body and the second opening on one side of the second gyroscopic groove body are docked.

[0010] Furthermore, in the above technical solution, the adjustment mechanism is a cam, which is placed between the two rolling bearing units and contacts the two rolling bearing units, and the upper end of the cam has a rotating shaft body, which is passed through an axial hole through the upper and lower end surfaces of the slide, and is limited in the slide by a fastener, and the two rolling bearing units are driven to move outward by rotating the cam, so that the rolling bodies are tightly pressed against the guide rail groove without gap; or, the adjustment mechanism is a spring, which is arranged between the two rolling bearing units, and the spring provides elastic force to drive the two rolling bearing units to move outward relative to the slide, so that the rolling bodies are tightly pressed against the guide rail groove without gap; or, the adjustment mechanism is an inclined wedge, which is inserted into the slide, and the inclined surfaces on both sides of the inclined wedge are respectively in contact with the two rolling bearing units, and the two rolling bearing units are driven to move outward by the downward movement of the inclined wedge, so that the rolling bodies are tightly pressed against the guide rail groove without gap.

[0011] Furthermore, in the above technical solution, the upper end surface of the rotating shaft body is provided with a tool groove for inserting a tool to drive the rotation; the upper end of the rotating shaft body is formed with an annular groove, and the retaining spring serving as a fastener is embedded in the annular groove, and the fastener is mounted on the upper end surface of the slide or in a recessed groove provided on the upper end surface of the slide.

[0012] Furthermore, in the above technical solution, the slide is provided with a plurality of oblong through-holes which pass through the upper and lower end surfaces. After the screws pass through the through-holes, they are screwed fixed to the screw holes provided on the rolling bearing unit to fix the rolling bearing unit to the lower end of the slide. After loosening the screws, the screws can slide in the through-holes to adjust the position of the rolling bearing unit relative to the slide.

[0013] Furthermore, in the above technical solution, a mounting seat is formed at the lower end of the slide, which protrudes downward and is embedded in the rail beam, and the mounting seat is provided with a mounting groove running through both side surfaces; the two rolling bearing units are installed side by side in the mounting groove, and the side surfaces of the rolling bearing units extend out of the side surfaces of the mounting seat.

[0014] Furthermore, in the above technical solution, the first swirling groove body is formed with a first lip body at the first opening edge, and the second swirling groove body is formed with a second lip body at the second opening edge. The second lip body is placed below the first lip body, and the first lip body and the second lip body cooperate to constrain the rolling body to rotate in the swirling groove cavity.

[0015] In order to solve the above technical problems, the present invention adopts the following second technical solution: the guiding mechanism for the linear motor includes a rail beam, a slide and two rolling bearing units, the inner walls on both sides of the rail beam are provided with guide rail grooves, the rolling bodies on the outer sides of the rolling bearing units are partially embedded in the guide rail grooves, the two rolling bearing units are fixed on both sides of the lower end of the slide in a manner that can adjust their relative positions, and the guiding mechanism for the linear motor also includes an adjustment mechanism for driving the two rolling bearing units to move outward to adjust the gap between the rolling bodies and the guide rail grooves; the rolling bearing unit includes a base and a plurality of rolling bodies arranged in the base and capable of rolling along a convoluted groove cavity in the base, one side of the convoluted groove cavity has a window for accommodating the partial exposure of the rolling bodies, and the base is composed of an upper base, a middle base and a lower base fixed together in this way; the upper base and the lower The end face is provided with a first gyration trough body with a semicircular cross-section, the upper end face of the lower base body is provided with a second gyration trough body with a semicircular cross-section, the upper end face of the middle base body is provided with a third gyration trough body with a semicircular cross-section, the third gyration trough body is connected with the first gyration trough body to form the first gyration trough cavity; and the first opening on one side of the first gyration trough body is connected with the third opening on one side of the third gyration trough body to form the first gyration trough cavity, and the rolling body in the first gyration trough cavity partially extends out of the first window; the lower end face of the middle base body is provided with a fourth gyration trough body with a semicircular cross-section, the fourth gyration trough body is connected with the second gyration trough body to form the second gyration trough cavity, and the second opening on one side of the second gyration trough body is connected with the fourth opening on one side of the fourth gyration trough body to form the second gyration trough cavity; the rolling body in the second gyration trough cavity partially extends out of the second window.

[0016] Furthermore, in the above technical solution, the manufacturing method of the rolling bearing unit includes the following steps:

[0017] S001: Fabricating a lower base: embedding a metal nut into an injection mold, and injecting a melted polymer composite material into the injection mold through the injection mold. After cooling, the lower base is formed into a lower base with a metal nut. The upper end surface of the lower base has a second convoluted groove body with a semicircular cross-section and a second opening located on one side of the second convoluted groove body. The second convoluted groove body has a second inlay groove at a section corresponding to the second opening.

[0018] S002: Making an upper base: Flip the lower base 180 degrees to form an upper base; that is, the lower end of the upper base has a first convoluted groove with a semicircular cross-section and a first opening located on one side of the first convoluted groove; and the first convoluted groove has a first inlay groove at a section corresponding to the first opening;

[0019] S003: Making a hard inlaid shell: using automated equipment to draw a metal material to form an inlaid tube blank and then split it into hard inlaid shells, or using metal or metal oxide materials to precisely press and form the hard inlaid shells, and at the same time grinding and polishing the load-bearing surface of the hard inlaid shells;

[0020] S004: Making rolling elements: Using metal or metal oxide materials to make rolling elements;

[0021] S005: Rolling bearing unit assembly: install the hard inlaid shell into the second inlaid groove of the lower base, place multiple rolling bodies in the second gyroscopic groove body of the lower base and the hard inlaid shell, and cover the upper base, fix it with screws and metal nuts to form a base, and the second gyroscopic groove body and the first gyroscopic groove body and the hard inlaid shell are connected to form a ring-shaped gyroscopic groove cavity for the rolling body to move, and the first opening and the second opening and the hard inlaid shell are connected to form a window that can accommodate the partial exposure of the rolling body, and the rolling body is partially exposed outside the window to make a rolling unit. Element; or, multiple rolling bodies are assembled in a noise reduction segmentation chain in a rollable manner, and then the noise reduction segmentation chain is placed in the second gyroscopic trough body and the hard inlaid shell of the lower base body, and covered with the upper base body, and fixed with screws and metal nuts to form a base body, and the second gyroscopic trough body and the first gyroscopic trough body and the hard inlaid shell are connected to form a gyroscopic trough cavity for the movement of the rolling body and in an annular shape, and the first opening and the second opening and the hard inlaid shell are connected to form a window that can accommodate the partial exposure of the rolling body, and the rolling body is partially exposed outside the window to form a rolling bearing unit.

[0022] Furthermore, in the above technical solution, the manufacturing method of the rolling bearing unit includes the following steps:

[0023] S001: Fabrication of the lower base: The lower base is precisely molded using metal powder under high pressure, and the lower base is tapped to form screw holes. A second convoluted trough with a semicircular cross-section and a second opening located on one side of the second convoluted trough are then formed on the upper end surface of the lower base by grinding. The outer shape of the lower base, the second convoluted trough, and the rear wall of the second opening are then polished using a polishing machine.

[0024] S002: Producing a polymer functional layer for silencing and reducing noise, spraying a layer of polymer composite material on the inner wall of the second gyratory tank to form a polymer functional layer, and grinding and polishing the polymer functional layer;

[0025] S003: Making an upper base: Flip the lower base 180 degrees to form an upper base; that is, the lower end of the upper base has a first convoluted groove with a semicircular cross section and a first opening located on one side of the first convoluted groove;

[0026] S004: Making rolling elements: Using metal or metal oxide materials to make rolling elements;

[0027] S005: Place multiple rolling bodies on the polymer functional layer of the inner wall of the second gyro trough body in the lower base body, and cover the upper base body, and fix them by screws and screw holes to form a base body, and the second gyro trough body is docked with the first gyro trough body to form a gyro trough cavity for the movement of the rolling bodies and is annular, and the first opening and the second opening are docked to form a window that can accommodate the partial exposure of the rolling bodies, thereby forming a rolling bearing unit; or, assemble multiple rolling bodies in a noise reduction dividing chain in a rollable manner, and then place the noise reduction dividing chain in the second gyro trough body of the lower base body, and cover the upper base body, and fix them by screws and screw holes to form a base body, and the second gyro trough body is docked with the first gyro trough body to form a gyro trough cavity for the movement of the rolling bodies and is annular, and the first opening and the second opening are docked to form a window that can accommodate the partial exposure of the rolling bodies, thereby forming a rolling bearing unit.

[0028] Furthermore, in the above technical solution, the manufacturing method of the rolling bearing unit includes the following steps:

[0029] S001: Fabricating the lower base: Using metal powder for high-pressure precision molding, the lower base is tapped to form screw holes. Grinding is then performed to form a second convoluted trough with a semicircular cross-section and a second opening located on one side of the second convoluted trough on the upper end surface of the lower base. Polishing of the lower base, the second convoluted trough, and the second opening is then performed using a polishing machine.

[0030] S002: Producing a polymer functional layer for silencing and reducing noise. First, a polymer composite material is used to form a thin-walled tube by injection molding. The thin-walled tube is fixed to the inner wall of the second swirling tank by inlaying to form a polymer functional layer on the inner wall of the second swirling tank.

[0031] S003: Making an upper base: Flip the lower base 180 degrees to form an upper base; that is, the lower end of the upper base has a first convoluted groove with a semicircular cross section and a first opening located on one side of the first convoluted groove;

[0032] S004: Making rolling elements: Using metal or metal oxide materials to make rolling elements;

[0033] S005: Place multiple rolling bodies on the polymer functional layer of the inner wall of the second gyro trough body in the lower base body, and cover the upper base body, and fix them by screws and screw holes to form a base body, and the second gyro trough body is docked with the first gyro trough body to form a gyro trough cavity for the movement of the rolling bodies and is annular, and the first opening and the second opening are docked to form a window that can accommodate the partial exposure of the rolling bodies, thereby forming a rolling bearing unit; or, assemble multiple rolling bodies in a noise reduction dividing chain in a rollable manner, and then place the noise reduction dividing chain in the second gyro trough body of the lower base body, and cover the upper base body, and fix them by screws and screw holes to form a base body, and the second gyro trough body is docked with the first gyro trough body to form a gyro trough cavity for the movement of the rolling bodies and is annular, and the first opening and the second opening are docked to form a window that can accommodate the partial exposure of the rolling bodies, thereby forming a rolling bearing unit.

[0034] After adopting the above technical solution, the present invention has the following beneficial effects compared with the prior art:

[0035] 1. The present invention utilizes two rolling bearing units, which are fixed to either side of the lower end of the slide in an adjustable relative position. The rolling bearing units enable stable sliding operation on the rail beam. Furthermore, an adjustment mechanism incorporated into the present invention drives the two rolling bearing units to move synchronously outward relative to the slide, thereby adjusting the gap between the rolling elements in the rolling bearing units and the guide rail grooves. This gap can also be eliminated to eliminate jitter during movement, thereby ensuring operational precision and stability. This makes the present invention highly competitive in the market.

[0036] 2. The base structure adopted by the rolling bearing unit in the present invention is simple. The base is only a two-piece structure with few parts, easy processing, convenient assembly, and low cost. In addition, since the base is composed of an upper base and a lower base fixed together, it is convenient to design the gyroscopic groove cavity and the window, especially convenient to design the internal details of the gyroscopic groove cavity such as the force contact section, oil groove, scale groove, hardened force area and wear reduction and noise elimination, which can further reduce the production cost and simplify the production process, making the present invention highly competitive in the market. Description of the drawings:

[0037] Figure 1 is a perspective view of the present invention;

[0038] Figure 2 This is an assembly diagram of the slide and the rolling bearing unit of the present invention;

[0039] Figure 3 This is an assembly diagram of the slide and the rolling bearing unit of the present invention from another perspective;

[0040] Figure 4 is a cross-sectional view of the slide and the rolling bearing unit in the present invention;

[0041] Figure 5 It is an exploded view of the slide and the rolling bearing unit in the present invention;

[0042] Figure 6 It is a three-dimensional diagram of the slide in the present invention;

[0043] Figure 7 is a three-dimensional diagram of the rolling bearing unit of the present invention;

[0044] Figure 8 It is a three-dimensional diagram of the rolling bearing unit in the present invention from another perspective;

[0045] Figure 9 is a cross-sectional view of the rolling bearing unit of the present invention;

[0046] Figure 10 It is a three-dimensional exploded view of the rolling bearing unit in the present invention;

[0047] Figure 11 is a perspective view of the upper base of the present invention;

[0048] Figure 12 This is an assembly diagram of the lower substrate, polymer functional layer and rolling element in the present invention;

[0049] Figure 13 This is an assembly diagram of the upper substrate and the polymer functional layer in the present invention;

[0050] Figure 14 This is a process flow chart of the manufacturing method of the first rolling bearing unit in the present invention;

[0051] Figure 15 This is a process flow chart of a method for manufacturing the second rolling bearing unit of the present invention;

[0052] Figure 16 This is a process flow chart of a method for manufacturing a third rolling bearing unit in the present invention;

[0053] Figure 17 This is an assembly diagram of the flexible noise reduction segmentation chain structure and the cylindrical rolling element in the present invention;

[0054] Figure 18 This is an assembly diagram of the flexible noise reduction segmentation chain structure and the spherical rolling element in the present invention;

[0055] Figure 19 This is a structural diagram of the rolling bearing unit of the present invention equipped with an upper half tube body and a lower half tube body;

[0056] Figure 20 This is a structural diagram of the rolling bearing unit of the present invention equipped with a hard inlaid shell;

[0057] Figure 21This is a three-dimensional diagram of another structure of the rolling bearing unit of the present invention;

[0058] Figure 22 yes Figure 21 sectional view of

[0059] Figure 23 yes Figure 21 Exploded diagram of . Specific implementation method:

[0060] The present invention will be further described below with reference to specific embodiments and accompanying drawings.

[0061] See Figure 1-23 As shown, a guide mechanism for a linear motor is used to make a beam-rail integrated linear motor as a part of the linear motor.

[0062] Combine Figure 1-6 As shown, the guiding mechanism for the linear motor includes a rail beam 5, a slide 6 and two rolling bearing units 1000. The two rolling bearing units 1000 are fixed on both sides of the lower end of the slide 6 in a manner that their relative positions can be adjusted. The inner walls on both sides of the rail beam 5 are provided with guiding rail grooves 51. The rolling bodies 2 on the outer sides of the rolling bearing units 1000 are partially embedded in the guiding rail grooves 51, so that the slide 6 is installed on the rail beam 5 through the rolling bearing units 1000, and can slide on the rail beam 5 through the rolling bearing units 1000.

[0063] In order to improve the operating accuracy and stability of the present invention, the guide mechanism for the linear motor also includes an adjustment mechanism 700 for driving the two rolling bearing units 1000 to move outward to adjust the gap between the rolling body 2 and the guide rail groove 51. That is to say, the adjustment mechanism 700 can drive the two rolling bearing units 1000 to move outward synchronously relative to the slide 6, so as to adjust the gap between the rolling body 2 in the rolling bearing unit 1000 and the guide rail groove 51, and can eliminate the gap between the rolling body 2 and the guide rail groove 51 to eliminate the jumping during movement, thereby ensuring the accuracy and stability of operation, making the present invention extremely competitive in the market.

[0064] The adjustment mechanism 700 has at least the following three different structures:

[0065] The first structure is: the adjustment mechanism 700 is a cam 7, which is placed between the two rolling bearing units 1000 and in contact with the two rolling bearing units 1000, and the upper end of the cam 7 has a rotating shaft body 71, which is passed through the axial hole 61 opened on the slide 6 and passes through the upper and lower end surfaces, and is limited in the slide 6 by a fastener 72, so that the cam 7 is stably installed between the two rolling bearing units 1000. When it is necessary to drive the two rolling bearing units 1000 to move synchronously, adjust the interval between the two rolling bearing units 1000, and then adjust the gap between the rolling body 2 and the guide rail groove 51, the rotating shaft body 71 is directly driven to rotate, thereby driving the cam 7 to rotate, and through the characteristics of different outer circle sizes of the cam 7, the two rolling bearing units 1000 can be driven to move, so that the rolling body 2 is tightly pressed against the guide rail groove 51 without gap, so as to achieve the above-mentioned function.

[0066] Specifically, the upper end surface of the rotating shaft body 71 is provided with a tool groove 711 for inserting a tool to drive the rotation, so that when in use, after inserting the tool into the tool groove 711, the rotating shaft body 71 can be driven to rotate by rotating the tool, which is convenient to operate; the upper end of the rotating shaft body 71 is formed with an annular groove 712, and the retaining spring serving as the fastener 72 is embedded in the annular groove 712, and the fastener 72 is mounted on the upper end surface of the slide 6 or in the recessed groove provided on the upper end surface of the slide 6, so that the rotating shaft body 71 is rotatably limited on the slide 6, and the cam 7 is also rotatably limited between the two rolling bearing units 1000.

[0067] The second structure is:

[0068] The adjustment mechanism 700 is a spring (i.e., a spring), which is arranged between the two rolling bearing units 1000, and the spring provides elastic force to drive the two rolling bearing units 1000 to move outward relative to the slide 6 to adjust the spacing between the two rolling bearing units 1000, and then adjust the gap between the rolling body 2 and the guide rail groove 51, so that the rolling body 2 is tightly pressed against the guide rail groove 51 without any gap.

[0069] The third structure is:

[0070] The adjustment mechanism 700 is an inclined wedge, which is inserted on the slide 6, and the inclined surfaces on both sides of the inclined wedge are in contact with the two rolling bearing units 1000 respectively. The inclined wedge moves downward to drive the two rolling bearing units 1000 to move outward to adjust the distance between the two rolling bearing units 1000, and then adjust the gap between the rolling body 2 and the guide rail groove 51, so that the rolling body 2 is tightly pressed against the guide rail groove 51 without any gap.

[0071] The assembly structure of the slide 6 and the rolling bearing unit 1000 is described in detail below:

[0072] The slide 6 is provided with a plurality of oblong through-holes 62 which pass through the upper and lower end surfaces. The screws 63 pass through the through-holes 62 and are screwedly fixed to the screw holes 1001 provided on the rolling bearing unit 1000 to fix the rolling bearing unit to the lower end of the slide 6. After loosening the screws 63, the screws 63 can slide in the through-holes 62 to adjust the position of the rolling bearing unit relative to the slide 6. When the position adjustment is completed, the screws 63 are tightened again to fasten the rolling bearing unit 1000 to the lower end of the slide 6, thereby achieving a fixed assembly with adjustable relative position, which is very convenient to operate / assemble.

[0073] In addition, a mounting seat 64 is formed at the lower end of the slide 6, which protrudes downward and is embedded in the rail beam 5. The mounting seat 64 is provided with a mounting groove 641 that passes through both sides. The two rolling bearing units 1000 are installed side by side in the mounting groove 641, and the side of the rolling bearing unit 1000 extends out of the side of the mounting seat 64. Since the mounting seat 64 is embedded in the rail beam 5, the stability of the assembly is improved, and the side of the rolling bearing unit 1000 extends out of the side of the mounting seat 64, so that the rolling body 2 in the rolling bearing unit 1000 also protrudes out of the side of the mounting seat 64, so that it is easy to embed in the guide rail groove 51, thereby achieving the purpose of stable assembly.

[0074] The rolling bearing unit 1000 includes at least the following two structures:

[0075] The first structure of the rolling bearing unit 1000 is: Figure 7-20 As shown, the rolling bearing unit 1000 includes a base 1 and a plurality of rolling bodies 2 arranged in the base 1 and capable of rolling along the spiral groove cavity 100 in the base 1. One side of the spiral groove cavity 100 has a window 200 for accommodating partial exposure of the rolling body 2, wherein the plurality of rolling bodies 2 form a rolling body chain to rotate / roll in the spiral groove cavity 100. The diameter of the rolling body 2 is larger than the size of the window 200, so that the rolling body 2 can only be partially exposed outside the window 200 to form a rolling contact with the object, thereby reducing friction and improving the speed and smoothness of operation.

[0076] The base 1 is composed of an upper base 11 and a lower base 12 that are fixed together in an upper and lower manner. That is, the base 1 in the present invention is a two-piece structure, namely the upper base 11 and the lower base 12, and the upper base 11 and the lower base 12 are fixed together in an upper and lower manner and locked by screws 10 to form a complete base. It has few parts, a simple structure, is easy to install, and has low cost.

[0077] Furthermore, the base 1 is formed by an upper base 11 and a lower base 12 fixed together, which has the greater advantage of facilitating the design of the swirl groove cavity 100, especially facilitating the design of internal details of the swirl groove cavity such as the force contact section, oil groove, scale groove, hardened force area, wear reduction and noise elimination, etc. Specifically, the surfaces where the upper base 11 and the lower base 12 are connected are respectively provided with a first swirl groove body 111 and a second swirl groove body 121 with a semicircular cross-section. The first swirl groove body 111 and the second swirl groove body 121 are connected to form the oblong swirl groove cavity 100; and the first opening 112 on one side of the first swirl groove body 111 and the second opening 122 on one side of the second swirl groove body 121 are connected to form the window 200. Among them, the cross-section of the first gyration trough body 111 is semicircular, and the overall shape is oblong, so that the first gyration trough body 111 can be directly set on the lower end face of the upper base 11, and its design / setting is very simple. Similarly, the cross-section of the second gyration trough body 121 is semicircular, and the overall shape is oblong, so that the second gyration trough body 121 can be directly set on the upper end face of the lower base 12, and its design / setting is very simple, so that after the upper base 11 and the lower base 12 are fixed together in an upper and lower manner in the later stage, an oblong gyration trough cavity 100 is formed, and the cross-section of the gyration trough cavity 100 is circular. In summary, the structure of the base 1 in the present invention is simple. It is only a two-piece structure with few parts, easy processing, convenient assembly, and low cost. In addition, since the base 1 is composed of an upper base 11 and a lower base 12 fixed together, it is convenient to design the gyratory groove cavity 100 and the window 200, which can further reduce the production cost and simplify the production process, making the present invention extremely competitive in the market.

[0078] The structure, shape and size of the upper base 11 and the lower base 12 are the same, and they are symmetrical structures. Therefore, the base 1 in the present invention has only one part, which is the upper base 11 or the lower base 12. That is, the upper base 11 and the lower base 12 can be used interchangeably, which is convenient for replacement and use, thereby making the production of the present invention simpler and more cost-effective. Only one set of molds is needed to produce the upper base 11 or the lower base 12, which is more convenient to use and has stronger market competitiveness.

[0079] One side of the base body 1 is also provided with a first anti-slip guide portion 101 and a second anti-slip guide portion 102 protruding outward, and the first anti-slip guide portion 101 and the second anti-slip guide portion 102 are distributed on both sides of the window 200. The cross-sections of the first anti-slip guide portion 101 and the second anti-slip guide portion 102 are both semicircular, and the outer surface of the portion after the rolling body 2 passes through the window 200 also protrudes outside the first anti-slip guide portion 101 and the second anti-slip guide portion 102. When the rolling body 2 is installed in the guide rail groove 51 of the slide rail 5, the first anti-slip guide portion 101 and the second anti-slip guide portion 102 will not contact the inner wall of the guide rail groove 51. Only when the entire rolling bearing unit is subjected to excessive force, the first anti-slip guide portion 101 and the second anti-slip guide portion 102 may contact the inner wall of the guide rail groove 51, thereby enhancing the bearing capacity and preventing derailment.

[0080] The upper substrate 11 and the lower substrate 12 can be made of different materials, as follows:

[0081] The first type: the upper substrate 11 and the lower substrate 12 are both integrally formed of metal or metal oxide material. Preferably, the upper substrate 11 and the lower substrate 12 are both made of stainless steel.

[0082] To reduce the noise generated by the rolling element 2 within the swirling groove cavity 100, the present invention provides a sound-absorbing and noise-reducing polymer functional layer 3 on the inner wall of the swirling groove cavity 100. The rolling element 2 contacts the polymer functional layer 3. Since the polymer functional layer 3 is a non-rigid material and a soft layer, the rolling contact between the rolling element 2 and the polymer functional layer 3 effectively achieves the function of noise reduction. The design of the polymer functional layer 3 does not affect the normal use of the window 200, that is, the polymer functional layer 3 does not cover or block the window 200, ensuring the normal use of the window 200.

[0083] Today's polymer composites include a wide range of materials, including plastics, rubber, fibers, films, adhesives, and coatings. Plastics, synthetic rubber, and synthetic fibers are known as the three major polymer composites of modern times. Their lightweight, abundant raw materials, ease of processing, excellent performance, and wide range of applications have led to their rapid development, significantly outpacing the traditional three basic materials.

[0084] The polymer functional layer 3 is a coating, i.e., a polymer composite coating, which is applied to the inner wall of the swirling groove cavity 100. Alternatively, the polymer functional layer 3 is a pipe, i.e., a polymer composite pipe, which is embedded and fixed to the inner wall of the swirling groove cavity 100. The pipe is C-shaped, and a gap is formed at the position corresponding to the window 200. Figure 19As shown, the pipe fitting includes an upper half pipe body 301 and a lower half pipe body 302 formed by dividing the pipe into two halves. The upper half pipe body 301 and the lower half pipe body 302 are respectively embedded and fixed in the first gyroscopic trough body 111 and the second gyroscopic trough body 121. When the upper base body 11 and the lower base body 12 are fixed together in an up-down manner, the upper half pipe body and the lower half pipe body are docked to form a complete pipe fitting. Of course, the pipe fitting can also be an integrated structure. As a preferred embodiment, the scheme adopted in this embodiment is that the polymer functional layer 3 is a coating, which is applied to the inner wall of the gyroscopic trough cavity 100. It is simple to set up, and the structure is more stable and not easy to fall off. The thickness of the coating is 0.01-1mm.

[0085] The second type: the upper substrate 11 and the lower substrate 12 are both integrally formed of a polymer composite material, so that the upper substrate 11 and the lower substrate 12 themselves have the effect of silencing and reducing noise, so that there is no need to add the above-mentioned polymer functional layer on the inner wall of the gyratory groove cavity 100.

[0086] In order to ensure the strength of the gyratory groove cavity 100 at the window 200 and avoid the phenomenon of extrusion and cracking caused by the contact between the rolling body 2 and the outside world,

[0087] A hard inlaid shell 10 is provided at the first opening 112 of the first gyro trough body 111 and the second opening 122 of the second gyro trough body 121. The load surface of the hard inlaid shell 10 is smoothly connected with the first gyro trough body 111 and the second gyro trough body 121, and can also increase the strength of the entire window 200, thereby avoiding the phenomenon of extrusion and cracking caused by the contact of the rolling body 2 with the outside world, thereby improving the service life of the product. The hard inlaid shell 10 is integrally formed from a metal or metal oxide material. Preferably, the hard inlaid shell 10 is made of stainless steel. Furthermore, the hard inlaid shell 10 is made of high-hardness stainless steel, which has greater strength and longer service life.

[0088] To prevent the rolling element 2 from escaping from the swirling groove cavity 100, the following design is also implemented: a first lip 110 is formed on the edge of the first opening 112 of the first swirling groove 111. Correspondingly, a second lip 120 is formed on the edge of the second opening 122 of the second swirling groove 121. The second lip 120 is positioned below the first lip 110, and the first and second lips 110, 120 cooperate to constrain the rolling element 2 from rotating within the swirling groove cavity 100. The distance between the second lip 120 and the first lip 110 is less than the diameter of the rolling element 2, effectively preventing the rolling element 2 from accidentally escaping and constraining the rolling element 2 from rotating within the swirling groove cavity 100.

[0089] The rolling element 2 is formed integrally from a metal or metal oxide material. Preferably, the rolling element 2 is made of stainless steel, in the form of a steel ball or a stainless steel cylinder.

[0090] There is a spacer 4 between the rolling elements 2, which separates the rolling elements 2 to avoid direct contact between the rolling elements 2. This can also reduce the collision friction between the rolling elements, play a role in reducing wear, maintaining accuracy and reducing noise. The spacer 4 is a flexible noise reduction segmentation chain structure, that is, a retainer, combined with Figure 18 As shown, the isolator 4 has a plurality of connected frames, each frame having a spherical cavity, the spherical rolling body 2 is placed in the spherical cavity and can move in the spherical cavity, and the rolling body 2 partially protrudes from the frame. Figure 17 As shown, the rolling body 2 is a cylindrical body, which is rotatably installed inside the flexible noise reduction segmentation chain structure through a rotating shaft. The cylindrical rolling body partially protrudes outside the flexible noise reduction segmentation chain structure to contact the inner wall of the swirling groove cavity 100.

[0091] In summary, the structure of the base 1 in the present invention is simple. It is only a two-piece structure with few parts, easy processing, convenient assembly, and low cost. In addition, since the base 1 is composed of an upper base 11 and a lower base 12 fixed together, it is convenient to design the gyratory groove cavity 100 and the window 200, which can further reduce the production cost and simplify the production process, making the present invention extremely competitive in the market.

[0092] Combine Figure 14 As shown, the present invention also discloses a first method for manufacturing a rolling bearing unit, which comprises the following steps:

[0093] S001: Fabricating the lower base 12: Embedding a metal nut into an injection mold, and then injecting a melted polymer composite material into the injection mold. After cooling, the lower base 12 with the metal nut is formed. The upper end surface of the lower base 12 has a second convoluted groove 121 with a semicircular cross-section and a second opening 122 located on one side of the second convoluted groove 121. A second inlay groove 123 is formed in a section of the second convoluted groove 121 corresponding to the second opening 122.

[0094] S002: Fabricating the upper base 11: Flipping the lower base 12 180° to form the upper base 11; the lower end of the upper base 11 has a first convoluted groove 111 with a semicircular cross-section and a first opening 112 located on one side of the first convoluted groove 111; and a first inlay groove 113 is formed in a section of the first convoluted groove 111 corresponding to the first opening 112;

[0095] S003: Making a hard inlaid shell 10: Using automated equipment to draw a metal material into an inlaid tube blank and then split it into hard inlaid shells 10, or, alternatively, using a metal or metal oxide material to precisely press-form the hard inlaid shell 10, while grinding and polishing the load-bearing surface of the hard inlaid shell 10. Finally;

[0096] S004: Making a rolling element: Using metal or metal oxide material to make a rolling element 2;

[0097] S005: Rolling bearing unit assembly: Combine Figure 20 As shown, the hard inlaid shell 10 is installed in the second inlaid groove 123 of the lower base 12, and multiple rolling elements 2 are placed in the second gyratory groove body 121 of the lower base 12 and the hard inlaid shell 10, and then covered with the upper base 11. After being fixed by screws and metal nuts, the base 1 is formed, and the second gyratory groove body 121, the first gyratory groove body 111 and the hard inlaid shell 10 are docked to form an annular gyratory groove cavity 100 for the movement of the rolling elements 2, and the first opening 112 and the second opening 122 and the hard inlaid shell 10 are docked to form a window 200 for accommodating a part of the rolling element 2, and the rolling element 2 is partially exposed outside the window 200, thereby forming a rolling unit; Alternatively, multiple rolling bodies 2 are assembled in a rolling manner in a noise reduction segmentation chain, and then the noise reduction segmentation chain is placed in the second gyration trough body 121 of the lower base 12 and the hard inlaid shell 10, and covered with the upper base 11, and fixed with screws and metal nuts to form a base 1, and the second gyration trough body 121 and the first gyration trough body 111 and the hard inlaid shell 10 are docked to form a gyration trough cavity 100 for the movement of the rolling body 2 and in an annular shape, and the first opening 112 and the second opening 122 and the hard inlaid shell 10 are docked to form a window 200 that can accommodate the partial exposure of the rolling body 2, and the rolling body 2 is partially exposed outside the window 200 to form a rolling bearing unit.

[0098] The manufacturing method of the first rolling bearing unit is extremely simple. When manufacturing the base 1, only the lower base 12 needs to be manufactured. That is, the upper base 11 and the lower base 12 can be used interchangeably, which makes the manufacturing easier, reduces the process / method steps, and reduces the cost. Only one set of molds is needed to manufacture the upper base 11 or the lower base 12, which is more convenient to use. The manufacturing method of the first rolling bearing unit adopts a polymer composite material to form the upper base 11 and the lower base 12, so that the upper base 11 and the lower base 12 themselves have the effect of silencing and reducing noise, so that there is no need to form a sound insulation layer on the inner wall of the gyratory groove cavity 100. An additional sound-absorbing and noise-reducing structure is added to make the product structure simpler and the manufacturing process / method steps fewer; in addition, the manufacturing method of the rolling bearing unit in the present invention also inlays and fixes the hard inlaid shell 10 in the second inlay groove 123 of the lower base 12 and the first inlay groove 113 of the upper base 11, and the load surface of the hard inlaid shell 10 is smoothly connected with the first spiral groove body 111 and the second spiral groove body 121, so as to ensure the strength of the spiral groove cavity 100 at the window 200, avoid the phenomenon of extrusion and cracking due to contact between the rolling body 2 and the outside world, and improve the service life of the product.

[0099] Combine Figure 15As shown, the present invention also discloses a second method for manufacturing a rolling bearing unit, which comprises the following steps:

[0100] S001: Fabricating the lower base 12: Using metal powder for high-pressure precision molding, the lower base 12 is tapped to form screw holes. A second convoluted trough 121 with a semicircular cross-section and a second opening 122 located on one side of the second convoluted trough 121 are formed on the upper end surface of the lower base 12 by grinding. The outer shape of the lower base 12 and the rear walls of the second convoluted trough 121 and the second opening 122 are then polished using a polishing machine.

[0101] S002: Manufacturing a polymer functional layer 3 for silencing and reducing noise. Spray a layer of polymer composite material on the inner wall of the second gyratory trough 121 to form the polymer functional layer 3, and then grind and polish the polymer functional layer.

[0102] S003: Making the upper base 11: Flip the lower base 12 180 degrees to form the upper base 11; that is, the lower end of the upper base 11 has a first gyratory groove 111 with a semicircular cross section and a first opening 112 located on one side of the first gyratory groove 111;

[0103] S004: Making a rolling element: Using metal or metal oxide material to make a rolling element 2;

[0104] S005: Place multiple rolling bodies 2 on the polymer functional layer 3 on the inner wall of the second gyroscopic groove 121 in the lower base 12, and cover the upper base 11, and fix them with screws through the screw holes to form a base 1, and the second gyroscopic groove 121 is docked with the first gyroscopic groove 111 to form a ring-shaped gyroscopic groove cavity 100 for the movement of the rolling body 2, and the first opening 112 and the second opening 122 are docked to form a window 200 that can accommodate the partial exposure of the rolling body 2, so as to make a rolling bearing unit; or, place multiple rolling bodies 2 on the upper base 11, and fix them with screws through the screw holes to form a base 1. The rolling body 2 is assembled in the noise reduction segmentation chain in a rollable manner, and then the noise reduction segmentation chain is placed in the second gyration groove body 121 of the lower base body 12, and covered with the upper base body 11, and fixed by screws and screw holes to form a base body 1, and the second gyration groove body 121 is docked with the first gyration groove body 111 to form a ring-shaped gyration groove cavity 100 for the movement of the rolling body 2, and the first opening 112 and the second opening 122 are docked to form a window 200 that can accommodate the partial exposure of the rolling body 2, to form a rolling bearing unit.

[0105] The manufacturing method of the above-mentioned second rolling bearing unit is extremely simple. When manufacturing the base 1, only the lower base 12 needs to be manufactured, that is, the upper base 11 and the lower base 12 can be used interchangeably, which is simpler to manufacture, can reduce the process / method steps, and has lower costs. Only one set of molds needs to be opened to manufacture the upper base 11 or the lower base 12, which is more convenient to use; the manufacturing method of the second rolling bearing unit uses metal materials to form the upper base 11 and the lower base 12, which have sufficient strength, so that there is no need to manufacture a hard inlaid shell in the later stage as in the manufacturing method of the first rolling bearing unit, and inlay the hard inlaid shell as a hard layer, thereby making the product structure simpler and having fewer manufacturing process / method steps; in addition, the manufacturing method of the rolling bearing unit in the present invention also sprays a layer of polymer composite material on the inner wall of the second gyratory trough 121 in the lower base 12 to form a polymer functional layer 3, which is very simple to manufacture, and the sound insulation and noise reduction effect is achieved through the polymer functional layer 3.

[0106] Combine Figure 16 As shown, the present invention also discloses a third method for manufacturing a rolling bearing unit, which comprises the following steps:

[0107] S001: Fabricating the lower base 12: Using metal powder for high-pressure precision molding, the lower base 12 is tapped to form screw holes, and then ground to form a second convoluted trough 121 with a semicircular cross-section and a second opening 122 located on one side of the second convoluted trough 121 on the upper end surface of the lower base 12; then, polishing the outer shape of the lower base 12, the second convoluted trough 121, and the second opening 122 is performed using a polishing machine;

[0108] S002: Producing a polymer functional layer 3 for silencing and reducing noise. First, a polymer composite material is used to form a thin-walled tube by injection molding. The thin-walled tube is fixed to the inner wall of the second swirling trough 121 by inlaying to form the polymer functional layer 3 on the inner wall of the second swirling trough 121.

[0109] S003: Making the upper base 11: Flip the lower base 12 180 degrees to form the upper base 11; that is, the lower end of the upper base 11 has a first gyratory groove 111 with a semicircular cross section and a first opening 112 located on one side of the first gyratory groove 111;

[0110] S004: Making a rolling element: Using metal or metal oxide material to make a rolling element 2;

[0111] S005: Place multiple rolling bodies 2 on the polymer functional layer 3 on the inner wall of the second gyroscopic groove 121 in the lower base 12, and cover the upper base 11, and fix them with screws through the screw holes to form a base 1, and the second gyroscopic groove 121 is docked with the first gyroscopic groove 111 to form a ring-shaped gyroscopic groove cavity 100 for the movement of the rolling body 2, and the first opening 112 and the second opening 122 are docked to form a window 200 that can accommodate the partial exposure of the rolling body 2, so as to make a rolling bearing unit; or, place multiple rolling bodies 2 on the upper base 11, and fix them with screws through the screw holes to form a base 1. The rolling body 2 is assembled in the noise reduction segmentation chain in a rollable manner, and then the noise reduction segmentation chain is placed in the second gyration groove body 121 of the lower base body 12, and covered with the upper base body 11, and fixed by screws and screw holes to form a base body 1, and the second gyration groove body 121 is docked with the first gyration groove body 111 to form a ring-shaped gyration groove cavity 100 for the movement of the rolling body 2, and the first opening 112 and the second opening 122 are docked to form a window 200 that can accommodate the partial exposure of the rolling body 2, to form a rolling bearing unit.

[0112] The manufacturing method of the above-mentioned third rolling bearing unit is extremely simple. When manufacturing the base 1, only the lower base 12 needs to be manufactured, that is, the upper base 11 and the lower base 12 can be used interchangeably, which is simpler to manufacture, can reduce the process / method steps, and has lower costs. Only one set of molds needs to be opened to manufacture the upper base 11 or the lower base 12, which is more convenient to use; the manufacturing method of the third rolling bearing unit uses metal materials to form the upper base 11 and the lower base 12, which have sufficient strength, so that there is no need to manufacture a hard inlaid shell in the later stage as in the manufacturing method of the first rolling bearing unit, and inlay the hard inlaid shell as a hard layer, thereby making the product structure simpler and having fewer manufacturing process / method steps; in addition, the manufacturing method of the rolling bearing unit in the present invention also inlays a layer of thin-walled pipe of polymer composite material on the inner wall of the second gyroscopic trough 121 in the lower base 12 to form a polymer functional layer 3, and the sound insulation and noise reduction effect is achieved through the polymer functional layer 3.

[0113] The second structure of the rolling bearing unit 1000 is: Figure 21-23As shown, it includes a base 1 and a plurality of rolling bodies 2 arranged in the base 1 and capable of rolling along the gyratory groove cavity 100 in the base 1, one side of the gyratory groove cavity 100 has a window 200 for accommodating the partial exposure of the rolling body 2, and the base 1 is composed of an upper base 11, a middle base 13 and a lower base 12 fixed together in this manner; the lower end face of the upper base 11 is provided with a first gyratory groove body 111 with a semicircular cross-section, the upper end face of the lower base 12 is provided with a second gyratory groove body 121 with a semicircular cross-section, the upper end face of the middle base 13 is provided with a third gyratory groove body 131 with a semicircular cross-section, and the third gyratory groove body 131 is docked with the first gyratory groove body 111 to form a first The vortex groove cavity described above; and the first opening 112 on one side of the first vortex groove body 111 is connected with the third opening 133 on one side of the third vortex groove body 131 to form the first window, and the rolling body in the first vortex groove cavity partially extends out of the first window; the lower end face of the middle base body 13 is provided with a fourth vortex groove body 132 with a semicircular cross-section, and the fourth vortex groove body 132 is connected with the second vortex groove body 121 to form the second vortex groove cavity, and the second opening 122 on one side of the second vortex groove body 121 is connected with the fourth opening 134 on one side of the fourth vortex groove body 132 to form the second window; the rolling body in the second vortex groove cavity partially extends out of the second window.

[0114] The base body 1 of the present invention has a simple structure, a three-piece, stacked structure similar to a hamburger. It has few parts, is easy to process, conveniently assembled, and inexpensively constructed. Furthermore, the two layers of rolling elements provide a stable rolling support, ensuring more stable operation. Furthermore, since the base body 11, the middle base body 13, and the lower base body 12 are fixed together in a top, middle, and bottom alignment, the design of the convoluted groove cavity 100 and the window 200 is facilitated, further reducing manufacturing costs and simplifying the manufacturing process, making the present invention highly competitive in the market.

[0115] Of course, the above description is only a specific embodiment of the present invention and is not intended to limit the scope of implementation of the present invention. Any equivalent changes or modifications made based on the structure, features and principles described in the scope of the patent application of the present invention should be included in the scope of the patent application of the present invention.

Claims

1. A guide mechanism for a linear motor, comprising a rail beam (5), a slide (6), and two rolling bearing units (1000), wherein the inner walls of both sides of the rail beam (5) are provided with guide rail grooves (51), and the rolling bodies (2) on the outer sides of the rolling bearing units (1000) are partially embedded in the guide rail grooves (51). Its characteristics are: The two rolling bearing units (1000) are fixed to both sides of the lower end of the slide (6) in a manner in which their relative positions can be adjusted, and the guide mechanism for the linear motor further includes an adjustment mechanism (700) for driving the two rolling bearing units (1000) to move outward to adjust the gap between the rolling body (2) and the guide rail groove (51); The rolling bearing unit (1000) comprises a base (1) and a plurality of rolling bodies (2) arranged in the base (1) and capable of rolling along a gyratory groove cavity (100) in the base (1); a window (200) is provided on one side of the gyratory groove cavity (100) for accommodating a portion of the rolling body (2) exposed; the base (1) comprises an upper base (11) and a lower base (12) fixed together; the surfaces where the upper base (11) and the lower base (12) meet are respectively provided with a first gyratory groove body (111) and a second gyratory groove body (121) with a semicircular cross section; the first gyratory groove body (111) and the second gyratory groove body (121) are connected to form the oblong gyratory groove cavity (100); and the window (200) is formed when a first opening (112) on one side of the first gyratory groove body (111) and a second opening (122) on one side of the second gyratory groove body (121) are connected; One side of the base body (1) is further provided with a first anti-slip guide portion (101) and a second anti-slip guide portion (102) protruding outward, and the first anti-slip guide portion (101) and the second anti-slip guide portion (102) are distributed on both sides of the window (200); wherein the first anti-slip guide portion (101) and the second anti-slip guide portion (102) are both semicircular in cross section, and the outer surface of the portion of the rolling body (2) after passing through the window (200) is also protruding from the first anti-slip guide portion (101). 1) and the second anti-slip guide portion (102); when the rolling body (2) is installed in the guide rail groove (51) of the rail beam (5), the first anti-slip guide portion (101) and the second anti-slip guide portion (102) will not contact the inner wall of the guide rail groove (51); only when the entire rolling bearing unit is subjected to excessive force, the first anti-slip guide portion (101) and the second anti-slip guide portion (102) may contact the inner wall of the guide rail groove (51), thereby enhancing the bearing capacity and preventing derailment.

2. The guide mechanism for a linear motor according to claim 1, characterized in that: The adjustment mechanism (700) is a cam (7), which is placed between the two rolling bearing units (1000) and contacts the two rolling bearing units (1000), and the upper end of the cam (7) has a rotating shaft body (71), which is arranged in an axial hole (61) through the upper and lower end surfaces of the slide (6) and is limited in the slide (6) by a fastener (72), and the two rolling bearing units (1000) are driven to move outward by rotating the cam (7), so that the rolling body (2) is tightly pressed against the guide rail groove (51) without gap; or, the adjustment mechanism (7 00) is a spring, which is arranged between the two rolling bearing units (1000), and the spring provides elastic force to drive the two rolling bearing units (1000) to move outward relative to the slide (6), so that the rolling body (2) is tightly pressed against the guide rail groove (51) without any gap; or, the adjustment mechanism (700) is a wedge, which is inserted on the slide (6), and the inclined surfaces on both sides of the wedge are in contact with the two rolling bearing units (1000) respectively, and the two rolling bearing units (1000) are driven to move outward by the downward movement of the wedge, so that the rolling body (2) is tightly pressed against the guide rail groove (51) without any gap.

3. The guide mechanism for a linear motor according to claim 2, wherein: The upper end surface of the rotating shaft body (71) is provided with a tool groove (711) for inserting a tool to drive the rotation; the upper end of the rotating shaft body (71) is formed with an annular groove (712), and a retaining spring as a fastener (72) is embedded in the annular groove (712), and the fastener (72) is mounted on the upper end surface of the slide (6) or in a recessed groove provided on the upper end surface of the slide (6).

4. The guide mechanism for a linear motor according to claim 1, wherein: The slide (6) is provided with a plurality of oblong through-holes (62) penetrating the upper and lower end surfaces. The screws (63) pass through the through-holes (62) and are screwedly fixed to the screw holes (1001) provided on the rolling bearing unit (1000) to fix the rolling bearing unit to the lower end of the slide (6). After the screws (63) are loosened, the screws (63) can slide in the through-holes (62) to adjust the position of the rolling bearing unit relative to the slide (6).

5. The guide mechanism for a linear motor according to claim 1, characterized in that: The lower end of the slide (6) is formed with a mounting seat (64) that protrudes downward and is embedded in the rail beam (5), and the mounting seat (64) is provided with a mounting groove (641) that passes through both sides; the two rolling bearing units (1000) are installed in parallel in the mounting groove (641), and the side surfaces of the rolling bearing units (1000) extend outside the side surfaces of the mounting seat (64).

6. The guide mechanism for a linear motor according to any one of claims 1 to 5, characterized in that: The first gyration groove body (111) is formed with a first lip body (110) at the edge of the first opening (112), and the second gyration groove body (121) is formed with a second lip body (120) at the edge of the second opening (122). The second lip body (120) is placed below the first lip body (110), and the first lip body (110) and the second lip body (120) cooperate to constrain the rolling body (2) to rotate in the gyration groove cavity (100).

7. The guide mechanism for a linear motor according to claim 1, characterized in that: The manufacturing method of the rolling bearing unit includes the following steps: S001: making a lower base (12): embedding a metal nut into an injection mold, and injecting the polymer composite material into the injection mold after melting through the injection mold, and forming the lower base (12) with a metal nut after cooling, wherein the upper end surface of the lower base (12) has a second gyratory groove (121) with a semicircular cross section and a second opening (122) located on one side of the second gyratory groove (121), and a section of the second gyratory groove (121) corresponding to the second opening (122) has a second inlay groove (123); S002: Making an upper base (11): turning the lower base (12) 180 degrees to form an upper base (11); that is, the lower end of the upper base (11) has a first convoluted groove (111) with a semicircular cross section and a first opening (112) located on one side of the first convoluted groove (111); and a section of the first convoluted groove (111) corresponding to the first opening (112) has a first inlay groove (113); S003: Making a hard inlaid shell (10): using an automated device to draw a metal material to form an inlaid tube embryo and split it into a hard inlaid shell (10), or, or using a metal or metal oxide material to precisely press and form the hard inlaid shell (10), and at the same time, grinding and polishing the load surface of the hard inlaid shell (10); S004: Making a rolling element: Making a rolling element (2) using a metal or metal oxide material; S005: Assembling the rolling bearing unit: insert the hard inlaid shell (10) into the second inlaid groove (123) of the lower base (12), place a plurality of rolling bodies (2) in the second gyratory groove body (121) of the lower base (12) and the hard inlaid shell (10), and cover the upper base (11). After being fixed by screws and metal nuts, the base (1) is formed, and the second gyratory groove body (121) and the first gyratory groove body (111) and the hard inlaid shell (10) are docked to form a gyratory groove cavity (100) for the rolling body (2) to move and is annular, and the first opening (112) and the second opening (122) and the hard inlaid shell (10) are docked to form a window (200) for accommodating the partial exposure of the rolling body (2), and the rolling body (2) is partially exposed outside the window (200). , forming a rolling unit; or, assembling a plurality of rolling bodies (2) in a rolling manner in a noise reduction segmentation chain, and then placing the noise reduction segmentation chain in the second gyration groove body (121) and the hard inlaid shell (10) of the lower base body (12), and covering the upper base body (11), and fixing by screws and metal nuts to form a base body (1), and the second gyration groove body (121) and the first gyration groove body (111) and the hard inlaid shell (10) are docked to form a ring-shaped gyration groove cavity (100) for the rolling body (2) to move, and the first opening (112) and the second opening (122) and the hard inlaid shell (10) are docked to form a window (200) for accommodating the partial exposure of the rolling body (2), and the rolling body (2) is partially exposed outside the window (200), so as to form a rolling bearing unit.

8. The guide mechanism for a linear motor according to claim 1, characterized in that: The manufacturing method of the rolling bearing unit includes the following steps: S001: Making the lower base (12): The lower base (12) is made by high-pressure precision molding of metal powder, and the lower base (12) is tapped to form a screw hole, and then a second convoluted groove (121) with a semicircular cross section and a second opening (122) located on one side of the second convoluted groove (121) are formed on the upper end surface of the lower base (12) by grinding; and the outer shape of the lower base (12) and the rear walls of the second convoluted groove (121) and the second opening (122) are polished by a polishing device; S002: manufacturing a polymer functional layer (3) for silencing and reducing noise, spraying a layer of polymer composite material on the inner wall of the second gyratory trough (121) to form the polymer functional layer (3), and grinding and polishing the polymer functional layer; S003: Making an upper base (11): turning the lower base (12) 180 degrees to form an upper base (11); that is, the lower end of the upper base (11) has a first gyratory groove (111) with a semicircular cross section and a first opening (112) located on one side of the first gyratory groove (111); S004: Making a rolling element: Making a rolling element (2) using a metal or metal oxide material; S005: placing a plurality of rolling bodies (2) on the polymer functional layer (3) on the inner wall of the second gyratory trough (121) in the lower base (12), and covering the upper base (11), and fixing them with screws and screw holes to form a base (1), and the second gyratory trough (121) and the first gyratory trough (111) are docked to form a ring-shaped gyratory trough cavity (100) for the movement of the rolling body (2), and the first opening (112) and the second opening (122) are docked to form a window (200) for accommodating the partial exposure of the rolling body (2), thereby forming a rolling bearing unit; or, A plurality of rolling bodies (2) are assembled in a noise reduction segmentation chain in a rollable manner, and the noise reduction segmentation chain is then placed in a second gyration groove body (121) of a lower base body (12), and covered with the upper base body (11), and fixed by screws and screw holes to form a base body (1), and the second gyration groove body (121) is docked with the first gyration groove body (111) to form a ring-shaped gyration groove cavity (100) for the rolling body (2) to move, and the first opening (112) and the second opening (122) are docked to form a window (200) for accommodating a part of the rolling body (2) to be exposed, thereby forming a rolling bearing unit.

9. The guide mechanism for a linear motor according to claim 1, characterized in that: The manufacturing method of the rolling bearing unit includes the following steps: S001: Making the lower base (12): The lower base (12) is made by high-pressure precision molding of metal powder, and the lower base (12) is tapped to form a screw hole, and then a second convoluted groove (121) with a semicircular cross section and a second opening (122) located on one side of the second convoluted groove (121) are formed on the upper end surface of the lower base (12) by grinding; and the outer shape of the lower base (12) and the second convoluted groove (121) and the second opening (122) are polished by a polishing device; S002: manufacturing a polymer functional layer (3) for silencing and reducing noise, first using a polymer composite material to form a thin-walled tube by injection molding equipment, and fixing the thin-walled tube to the inner wall of the second gyratory trough (121) by embedding to form the polymer functional layer (3) on the inner wall of the second gyratory trough (121); S003: Making an upper base (11): turning the lower base (12) 180 degrees to form an upper base (11); that is, the lower end of the upper base (11) has a first gyratory groove (111) with a semicircular cross section and a first opening (112) located on one side of the first gyratory groove (111); S004: Making a rolling element: Making a rolling element (2) using a metal or metal oxide material; S005: placing a plurality of rolling bodies (2) on the polymer functional layer (3) on the inner wall of the second gyratory trough (121) in the lower base (12), and covering the upper base (11), and fixing them with screws and screw holes to form a base (1), and the second gyratory trough (121) and the first gyratory trough (111) are docked to form a ring-shaped gyratory trough cavity (100) for the movement of the rolling body (2), and the first opening (112) and the second opening (122) are docked to form a window (200) for accommodating the partial exposure of the rolling body (2), thereby forming a rolling bearing unit; or, A plurality of rolling bodies (2) are assembled in a noise reduction segmentation chain in a rollable manner, and the noise reduction segmentation chain is then placed in a second gyration groove body (121) of a lower base body (12), and covered with the upper base body (11), and fixed by screws and screw holes to form a base body (1), and the second gyration groove body (121) is docked with the first gyration groove body (111) to form a ring-shaped gyration groove cavity (100) for the rolling body (2) to move, and the first opening (112) and the second opening (122) are docked to form a window (200) for accommodating a part of the rolling body (2) to be exposed, thereby forming a rolling bearing unit.

10. A guide mechanism for a linear motor, comprising a rail beam (5), a slide (6), and two rolling bearing units (1000), wherein the inner walls of both sides of the rail beam (5) are provided with guide rail grooves (51), and the rolling bodies (2) on the outer sides of the rolling bearing units (1000) are partially embedded in the guide rail grooves (51). Its characteristics are: The two rolling bearing units (1000) are fixed to both sides of the lower end of the slide (6) in a manner such that their relative positions can be adjusted, and the guide mechanism for the linear motor further includes an adjustment mechanism for driving the two rolling bearing units (1000) to move outward to adjust the gap between the rolling body (2) and the guide rail groove (51); The rolling bearing unit comprises a base (1) and a plurality of rolling bodies (2) arranged in the base (1) and capable of rolling along a gyratory groove cavity (100) in the base (1); one side of the gyratory groove cavity (100) is provided with a window (200) for accommodating a portion of the rolling body (2) to be exposed; the base (1) is composed of an upper base (11), a middle base (13) and a lower base (12) fixed together in an upper, middle and lower manner; the lower end face of the upper base (11) is provided with a first gyratory groove body (111) with a semicircular cross section, and the upper end face of the lower base (12) is provided with a A second gyration groove body (121) with a semicircular cross section is provided on the upper end face of the middle base body (13), and the third gyration groove body (131) and the first gyration groove body (111) are connected to form the first gyration groove cavity; and the first opening (112) on one side of the first gyration groove body (111) and the third opening (133) on one side of the third gyration groove body (131) are connected to form the first window, and the rolling body in the first gyration groove cavity partially extends out of the first window; the lower end face of the middle base body (13) is provided with a third gyration groove body (131) and the first opening (112) on one side of the first gyration groove body (111) and the third opening (133) on the other side of the third gyration groove body (131) respectively. The end surface is provided with a fourth gyration groove body (132) with a semicircular cross section, and the fourth gyration groove body (132) is connected with the second gyration groove body (121) to form a second gyration groove cavity, and the second opening (122) on one side of the second gyration groove body (121) is connected with the fourth opening (134) on one side of the fourth gyration groove body (132) to form a second window; the rolling body in the second gyration groove cavity partially extends out of the second window; one side of the base body is also provided with a first anti-slip guide part and a second anti-slip guide part protruding outward, the first anti-slip guide part and The second anti-slip guide portion is distributed on both sides of the window; wherein the cross-sections of the first anti-slip guide portion and the second anti-slip guide portion are both semicircular, and the outer surface of the portion of the rolling body after passing through the window is also protruding outside the first anti-slip guide portion and the second anti-slip guide portion; when the rolling body is installed in the guide rail groove of the rail beam (5), the first anti-slip guide portion and the second anti-slip guide portion will not contact the inner wall of the guide rail groove, and only when the entire rolling bearing unit is subjected to excessive force, the first anti-slip guide portion and the second anti-slip guide portion may contact the inner wall of the guide rail groove, thereby enhancing the bearing capacity and preventing derailment.

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