A high-precision linear motor module

Abstract

The present invention relates to the technical field of linear motors, and discloses a high-precision linear motor module, including a base, a stator, a mover, a slide rail, a load, a slider and a lubrication module. The base is fixedly provided with a stator, a mover is slidably fitted above the stator, the base is symmetrically fixedly provided with slide rails, the load is slidably fitted with the slide rails through the slider, and one end of the load is fixedly provided with a lubrication module that can swing and spray lubricating oil. The present invention utilizes the characteristics of the swingable structure in the lubrication module so that the lubricating oil can cover the slide rails on both sides at the same time when spraying. This arrangement eliminates the need to replenish the lubricating oil independently for each slide rail, ensuring that the lubricating oil is more evenly replenished, which is conducive to maintaining the high-precision operation of the linear motor module. The range of the swinging injection of the lubricating oil also covers the contact part between the stator and the mover, and the sliding action of the mover is also fully lubricated, effectively preventing the mover from generating heat when sliding at high speed.

Description

Technical Field

[0001] The present invention relates to the technical field of linear motors, and more specifically, to a high-precision linear motor module. Background Art

[0002] A linear motor is a transmission device that converts electrical energy directly into linear motion mechanical energy without any intermediate structural conversion. A linear motor is also called a linear motor, linear motor or linear motor.

[0003] Before assembling and using the traditional linear motor module, it is necessary to pour lubricating oil on the slide rail, and use a brush, cotton cloth and other tools to evenly cover the working surface of the slide rail with the lubricating oil. During the long-term use of the motor module, the lubricating performance of the lubricating oil will decrease and it will not be able to provide sufficient lubrication effect, which will increase the friction between the slider and the slide rail. At the same time, the lubricating oil used for a long time will also be difficult to take away the heat generated by the friction between the slider and the slide rail. For this reason, the existing technology adds a means of replenishing the lubricating oil, but the replenishment of the lubricating oil in the existing linear motor has the following disadvantages:

[0004] First, the slide rails for load sliding in the linear motor need to be set in pairs under the limitation of stability. However, due to the obstruction of the load, it is impossible to set a lubrication channel connecting the two sets of slide rails. The channel lubrication solution is difficult to implement. This requires that each slide rail needs to be independently provided with lubricating oil replenishment, which is complicated and inconvenient to operate. Moreover, it is difficult to maintain uniformity when replenishing the lubricating oil independently, which has an adverse effect on the accuracy of the linear motor.

[0005] Second, in existing linear motors, lubricating oil is often only added to the rail and slider, ignoring the sliding effect between the mover and the stator, which causes the mover to generate heat during the operation of the linear motor and cannot be solved, thereby reducing the working accuracy of the linear motor. Summary of the invention

[0006] The present invention provides a high-precision linear motor module, which solves the technical problems in the related art that it is difficult to maintain uniformity in replenishing lubricating oil to an independent slide rail and that the working accuracy is reduced due to neglecting lubrication replenishment for sliding between a mover and a stator.

[0007] The present invention provides a high-precision linear motor module, comprising a base, a stator, a mover, a slide rail, a load, a slider and a lubrication module, wherein the stator is fixedly arranged in the base, the mover is slidably fitted above the stator, the slide rails are symmetrically fixedly installed in the base, the load is slidably fitted with the slide rails via the slider, and a lubrication module that can swing and spray lubricating oil is fixedly arranged at one end of the load, and during the movement of the load, the lubricating oil sprayed by the lubrication module can simultaneously cover the connecting surface between the stator and the mover and the connecting surface between the slide rail and the slider.

[0008] As a further solution of the present invention: upper lubrication holes are evenly opened on the slide rail, lower lubrication holes horizontally aligned with the upper lubrication holes are opened on both sides of the sliding track of the mover in the base, and the upper lubrication holes are connected to the lower lubrication holes through a flow channel.

[0009] As a further solution of the present invention: the lubrication module includes a base plate, a motor, a gear block, a rotating shaft, a loading block, a lubricating oil supply part, a nozzle and a rack, the base plate is fixedly installed on one end of the load, the motor is fixedly arranged on the base plate, the gear block is fixedly installed on the output shaft of the motor, the rotating shaft horizontally aligned with the output shaft of the motor is rotatably installed on the base plate, the loading block is fixedly arranged on the end of the rotating shaft, the lubricating oil supply part is fixedly installed in the interlayer of the loading block, the output end directly below the lubricating oil supply part is connected with a nozzle, a rack matching the gear block is fixedly arranged on the side of the loading block, the rack is in a semicircular arc shape, and the nozzle swings back and forth with the loading block when driven by the motor, and the swing trajectory is in a semicircular arc shape with the opening facing downward, and the upper lubrication hole and the lower lubrication hole are both in the coverage range of the nozzle swing.

[0010] As a further solution of the present invention: the lubrication module also includes a rotating rod, fan blades, bevel gear 1 and bevel gear 2. The rotating rod is rotatably arranged on the inner side of the base plate, the fan blades are fixedly installed on the bottom end of the rotating rod, the bevel gear 1 is fixedly installed on the rotating shaft, the bevel gear 2 is fixedly installed on the rotating rod, the bevel gear 1 is meshed with the bevel gear 2, and the fan blades are vertically aligned with the mover.

[0011] As a further solution of the present invention: a photoelectric switch is fixedly mounted on one side of the base, and a reflector plate cooperating with the photoelectric switch is fixedly mounted on one side of the load.

[0012] As a further solution of the present invention: end covers are fixedly installed at both ends of the base, and a vibration-damping column is fixed on the end cover. The vibration-damping column is made of elastic rubber material, and the vibration-damping column is in compression contact with the end of the mover.

[0013] The beneficial effects of the present invention are:

[0014] The present invention utilizes the characteristics of the swingable structure in the lubrication module so that the lubricating oil can cover the slide rails on both sides at the same time when spraying. This arrangement eliminates the need to replenish the lubricating oil for each slide rail independently, ensuring that the lubricating oil is more evenly replenished, which is beneficial to maintaining high-precision operation of the linear motor module.

[0015] In the present invention, the range of the swing injection of the lubricating oil also covers the contact part between the stator and the mover, and the sliding action of the mover is also fully lubricated, which effectively avoids the increased heat generation of the mover during high-speed sliding and prevents the reduction of the working accuracy of the linear motor due to overheating of the mover.

[0016] When the lubricating oil is replenished in the present invention, since the contact part between the mover and the stator is located at the top, after it is lubricated by the lubricating oil that is fully covered, the excess lubricating oil will flow through the lower lubricating hole, through the flow channel, and overflow from the upper lubricating hole, thereby covering the surface of the slide rail, which is beneficial to the formation of a uniform lubricating oil film on the surface of the slide rail and improves the efficiency of lubricating oil replenishment.

[0017] In the present invention, on the basis of uniformly replenishing the lubricating oil, the lubrication module also has the characteristic of cooling the mover. In the lubrication module, the rotation of the rotating shaft is utilized to mesh the bevel gear one with the bevel gear two, so that the vertical rotating rod is rotated, thereby causing the fan blades to rotate, sending air downward to blow onto the surface of the mover, providing a certain cooling effect for the mover. The effect of wind force can also accelerate the diffusion of the lubricating oil sprayed near the lower lubrication hole, improve the uniformity of the lubricating oil coverage, and increase the speed at which the lubricating oil overflows to the upper lubrication hole after the lubricating oil fully covers the vicinity of the lower lubrication hole, thereby accelerating the formation of the lubricating oil film. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a schematic diagram of the overall structure of a high-precision linear motor module proposed by the present invention;

[0019] Figure 2 It is a schematic diagram of the detailed structure of a high-precision linear motor module proposed by the present invention;

[0020] Figure 3 It is a schematic diagram of the partial decomposition structure of a high-precision linear motor module proposed by the present invention;

[0021] Figure 4 This is a schematic diagram of the flow of lubricating oil in a high-precision linear motor module proposed by the present invention;

[0022] Figure 5 It is a schematic diagram of the first three-dimensional structure of a lubrication module in a high-precision linear motor module proposed by the present invention;

[0023] Figure 6 It is a second three-dimensional structural schematic diagram of a lubrication module in a high-precision linear motor module proposed by the present invention;

[0024] Figure 7 It is a third three-dimensional structural schematic diagram of a lubrication module in a high-precision linear motor module proposed by the present invention.

[0025] In the figure: 1. base; 10. lower lubrication hole; 100. flow channel; 2. stator; 3. mover; 4. slide rail; 40. upper lubrication hole; 5. load; 6. slider; 7. lubrication module; 71. bottom plate; 72. motor; 73. gear block; 74. rotating shaft; 75. loading block; 76. lubricating oil supply part; 77. nozzle; 78. rack; 79. rotating rod; 710. fan blade; 711. bevel gear one; 712. bevel gear two; 81. photoelectric switch; 82. reflector; 91. end cover; 92. vibration damping column. DETAILED DESCRIPTION

[0026] The subject matter described herein will now be discussed with reference to example implementations. It should be understood that the discussion of these implementations is only to enable those skilled in the art to better understand and implement the subject matter described herein, and the functions and arrangements of the elements discussed may be changed without departing from the scope of protection of the contents of this specification. Various examples may omit, replace, or add various processes or components as needed. In addition, the features described in some examples may also be combined in other examples.

[0027] The present invention discloses a high-precision linear motor module, such as Figure 1 - Figure 7 As shown, it includes a base 1, a stator 2, a mover 3, a slide rail 4, a load 5, a slider 6 and a lubrication module 7. The stator 2 is fixedly arranged in the base 1, and the mover 3 is slidably matched above the stator 2. The slide rail 4 is symmetrically fixedly installed in the base 1. The load 5 is slidably matched with the slide rail 4 through the slider 6. A lubrication module 7 that can swing and spray lubricating oil is fixedly arranged at one end of the load 5. When the load 5 moves, the lubricating oil sprayed by the lubrication module 7 can simultaneously cover the connecting surface between the stator 2 and the mover 3 and the connecting surface between the slide rail 4 and the slider 6.

[0028] When the linear motor module of the present invention is working, the mover 3 slides relative to the stator 2 through electromagnetic action, and the load 5 fixed on the mover 3 slides relative to the slide rail 4, so that the workpiece loaded on the load 5 can achieve linear movement. While the above-mentioned sliding action is taking place, the lubricating oil is replenished to each lubricating surface through the lubricating module 7. By utilizing the characteristics of the swingable structure in the lubricating module 7, the lubricating oil can cover the slide rails 4 on both sides at the same time when spraying. This arrangement eliminates the need to replenish the lubricating oil for each slide rail 4 independently, ensuring that the lubricating oil is more evenly replenished, which is conducive to maintaining high-precision operation of the linear motor module.

[0029] In addition, the range of the lubricating oil swing injection also covers the contact part between the stator 2 and the mover 3, and the sliding action of the mover 3 is also fully lubricated, which effectively avoids the increase of heat generation of the mover 3 during high-speed sliding, and prevents the reduction of the working accuracy of the linear motor due to overheating of the mover 3.

[0030] like Figure 3 and Figure 4 As shown, upper lubrication holes 40 are evenly opened on the slide rail 4, and lower lubrication holes 10 horizontally aligned with the upper lubrication holes 40 are opened on both sides of the sliding track of the mover 3 in the base 1, and the upper lubrication holes 40 and the lower lubrication holes 10 are connected through the flow channel 100.

[0031] When replenishing the lubricating oil, since the contact part between the mover 3 and the stator 2 is located at the top, after being fully covered with the lubricating oil, the excess lubricating oil will flow through the lower lubricating hole 10, through the flow channel 100, and then overflow from the upper lubricating hole 40, thereby covering the surface of the slide rail 4, which is beneficial to the formation of a uniform lubricating oil film on the surface of the slide rail 4 and improves the efficiency of lubricating oil replenishment.

[0032] like Figures 5 to 7 As shown, the lubrication module 7 includes a base plate 71, a motor 72, a gear block 73, a rotating shaft 74, a loading block 75, a lubricating oil supply member 76, a nozzle 77 and a rack 78. The base plate 71 is fixedly mounted on one end of the load 5. The motor 72 is fixedly arranged on the base plate 71. The gear block 73 is fixedly mounted on the output shaft of the motor 72. The rotating shaft 74 horizontally aligned with the output shaft of the motor 72 is rotatably mounted on the base plate 71. The loading block 75 is fixedly arranged at the end of the rotating shaft 74. A lubricating oil supply part 76 is fixedly installed in the interlayer of the loading block 75, and a nozzle 77 is connected to the output end directly below the lubricating oil supply part 76. A rack 78 cooperating with the gear block 73 is fixedly provided on the side of the loading block 75, and the rack 78 is in a semicircular arc shape. Driven by the motor 72, the nozzle 77 swings back and forth with the loading block 75, and the swing trajectory is in a semicircular arc shape with the opening facing downward. The upper lubrication hole 40 and the lower lubrication hole 10 are both within the coverage range of the swing of the nozzle 77.

[0033] The lubricating oil replenishment operation is specifically implemented through the lubrication module 7. In the lubrication module 7, the motor 72 is controlled to rotate alternately in the forward and reverse directions at a certain frequency, so that the gear block 73 rotates. The gear block 73 drives the rack 78 to rotate through the meshing action. Since the rack 78 is in a semicircular arc shape, the entire loading block 75 swings back and forth in the semicircular arc range with the opening facing downward, ensuring that the lubricating oil supply part 76 installed therein sprays the lubricating oil through the nozzle 77 to cover both the upper lubrication holes 40 on both sides and the lower lubrication holes 10.

[0034] It should be specially noted that the lubricating oil supply component outputs the stored lubricating oil at a uniform speed, which can be achieved by combining the existing oil pump and oil tank. The specific working principle is the existing technology and will not be elaborated here.

[0035] The lubrication module 7 also includes a rotating rod 79, a fan blade 710, a bevel gear 1 711 and a bevel gear 2 712. The rotating rod 79 is rotatably arranged on the inner side of the bottom plate 71. The fan blade 710 is fixedly installed on the bottom end of the rotating rod 79. The bevel gear 1 711 is fixedly installed on the rotating shaft 74. The bevel gear 2 712 is fixedly installed on the rotating rod 79. The bevel gear 1 711 is meshed with the bevel gear 2 712. The fan blade 710 is vertically aligned with the mover 3.

[0036] On the basis of evenly replenishing the lubricating oil, the lubrication module 7 also has the characteristic of cooling the mover 3. In the lubrication module 7, the rotation of the rotating shaft 74 is utilized to mesh the bevel gear 1 711 with the bevel gear 2 712, so that the vertical rotating rod 79 rotates, thereby causing the fan blades 710 to rotate, sending air downward to blow onto the surface of the mover 3, thereby providing a certain cooling effect for the mover 3.

[0037] In addition, the effect of wind can also accelerate the diffusion of the lubricating oil sprayed near the lower lubricating hole 10, improve the uniformity of the lubricating oil coverage, and the speed at which the lubricating oil overflows to the upper lubricating hole 40 after fully covering the lower lubricating hole 10, thereby accelerating the formation of the lubricating oil film.

[0038] like Figure 2 As shown, a photoelectric switch 81 is fixedly mounted on one side of the base 1 , and a reflector 82 matched with the photoelectric switch 81 is fixedly mounted on one side of the load 5 .

[0039] like Figure 2 and Figure 3 As shown, end covers 91 are fixedly mounted on both ends of the base 1 , and a vibration-damping column 92 is fixed on the end cover 91 . The vibration-damping column 92 is made of elastic rubber material, and the vibration-damping column 92 is in compression contact with the end of the mover 3 .

[0040] How it works

[0041] When the linear motor module of the present invention is working, the mover 3 slides relative to the stator 2 through electromagnetic action, and the load 5 fixed on the mover 3 slides relative to the slide rail 4, so that the workpiece loaded on the load 5 can achieve linear movement. While the above sliding action is being performed, the lubricating module 7 is used to replenish the lubricating oil to each lubricating surface. By utilizing the characteristics of the swingable structure in the lubricating module 7, the lubricating oil can cover the slide rails 4 on both sides at the same time when spraying. This arrangement does not require the lubricating oil to be replenished independently for each slide rail 4, ensuring that the lubricating oil is more uniform when replenished, which is conducive to maintaining the high-precision operation of the linear motor module. The range of the swing injection of the lubricating oil also covers the contact part between the stator 2 and the mover 3, and the sliding action of the mover 3 is also fully lubricated, effectively avoiding the heat generation of the mover 3 when sliding at high speed, and preventing the working accuracy of the linear motor from decreasing due to overheating of the mover 3. When replenishing the lubricating oil, since the contact part between the mover 3 and the stator 2 is located at the top, after it is lubricated by the fully covered lubricating oil, the excess lubricating oil will pass through the lower lubricating hole 10 and the flow channel 100. The lubricating oil overflows from the upper lubrication hole 40, thereby covering the surface of the slide rail 4, which is conducive to the formation of a uniform lubricating oil film on the surface of the slide rail 4 and improves the efficiency of lubricating oil replenishment. The lubricating oil replenishment operation is specifically implemented by the lubricating module 7. In the lubricating module 7, the motor 72 is controlled to rotate and output alternately in the forward and reverse directions at a certain frequency, so that the gear block 73 rotates, and the gear block 73 drives the rack 78 to rotate through the meshing action. Since the rack 78 is in a semicircular arc shape, the entire loading block 75 swings back and forth in the semicircular arc range with the opening facing downward. , ensuring that the lubricating oil sprayed by the lubricating oil supply member 76 installed therein through the nozzle 77 can cover both the upper lubricating holes 40 on both sides and the lower lubricating holes 10. On the basis of evenly replenishing the lubricating oil, the lubricating module 7 also has the characteristic of cooling the mover 3. In the lubricating module 7, the rotation of the rotating shaft 74 is utilized to mesh the bevel gear 1 711 with the bevel gear 2 712, so that the vertical rotating rod 79 rotates, thereby rotating the fan blades 710, sending air downward to blow onto the surface of the mover 3, providing a certain cooling effect for the mover 3.

[0042] The above describes an embodiment of the present invention, but this embodiment is not limited to the above-mentioned specific implementation mode. The above-mentioned specific implementation mode is merely illustrative and not restrictive. Under the guidance of this embodiment, ordinary technicians in this field can also make more forms of equivalent embodiments, all of which are within the protection of this embodiment.

Claims

1. A high-precision linear motor module, characterized in that: The invention comprises a base (1), a stator (2), a mover (3), a slide rail (4), a load (5), a slider (6) and a lubrication module (7); the stator (2) is fixedly arranged in the base (1); the mover (3) is slidably engaged above the stator (2); the slide rail (4) is symmetrically fixedly installed in the base (1); the load (5) is slidably engaged with the slide rail (4) via the slider (6); a lubrication module (7) capable of swingably spraying lubricating oil is fixedly arranged at one end of the load (5); when the load (5) moves, the lubricating oil sprayed by the lubrication module (7) can simultaneously cover the connection surface between the stator (2) and the mover (3) and the connection surface between the slide rail (4) and the slider (6); Upper lubrication holes (40) are evenly arranged on the slide rail (4), lower lubrication holes (10) are arranged on both sides of the sliding track of the mover (3) in the base (1) and are horizontally aligned with the upper lubrication holes (40), and the upper lubrication holes (40) and the lower lubrication holes (10) are connected via a flow channel (100); The lubrication module (7) comprises a base plate (71), a motor (72), a gear block (73), a rotating shaft (74), a loading block (75), a lubricating oil supply member (76), a nozzle (77) and a rack (78); the base plate (71) is fixedly mounted on one end of the load (5); the motor (72) is fixedly mounted on the base plate (71); the gear block (73) is fixedly mounted on the output shaft of the motor (72); a rotating shaft (74) horizontally aligned with the output shaft of the motor (72) is rotatably mounted on the base plate (71); and the loading block is fixedly mounted on the end of the rotating shaft (74). (75), a lubricating oil supply member (76) is fixedly installed in the interlayer of the loading block (75), a nozzle (77) is connected to the output end directly below the lubricating oil supply member (76), a rack (78) cooperating with the gear block (73) is fixedly arranged on the side of the loading block (75), the rack (78) is in a semicircular arc shape, and the nozzle (77) swings back and forth with the loading block (75) under the drive of the motor (72), and the swinging trajectory is in a semicircular arc shape with the opening facing downward, and the upper lubrication hole (40) and the lower lubrication hole (10) are both within the coverage range of the swinging of the nozzle (77); The lubrication module (7) further comprises a rotating rod (79), a fan blade (710), a bevel gear 1 (711) and a bevel gear 2 (712); the rotating rod (79) is rotatably arranged on the inner side of the bottom plate (71); the fan blade (710) is fixedly mounted on the bottom end of the rotating rod (79); the bevel gear 1 (711) is fixedly mounted on the rotating shaft (74); the bevel gear 2 (712) is fixedly mounted on the rotating rod (79); the bevel gear 1 (711) is meshed with the bevel gear 2 (712); and the fan blade (710) is vertically aligned with the mover (3).

2. A high-precision linear motor module according to claim 1, characterized in that: A photoelectric switch (81) is fixedly mounted on one side of the base (1), and a reflective plate (82) that cooperates with the photoelectric switch (81) is fixedly mounted on one side of the load (5).

3. A high-precision linear motor module according to claim 2, characterized in that: End covers (91) are fixedly mounted on both ends of the base (1), a vibration-damping column (92) is fixed on the end cover (91), the vibration-damping column (92) is made of elastic rubber material, and the vibration-damping column (92) is in extrusion contact with the end of the mover (3).

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