A linear motor test platform

Abstract

The present invention provides a linear motor test platform that can be used as a universal test platform for measuring a variety of linear motors. The platform comprises a test platform baseplate assembly and a prime mover assembly that connects to and provides tension and pressure to a mover module of the linear motor under test, mounted on the test platform baseplate assembly. The test platform baseplate assembly is provided with a mover assembly for mounting the mover module and a stator assembly for mounting the stator module of the linear motor under test. The spacing between the stator assembly and the mover assembly is adjustable. The gap between the mover and stator of the present invention can be freely adjusted as needed, making it suitable for use as a universal test platform for measuring a variety of linear motors, thereby addressing the shortcomings of existing testing methods.

Description

Technical Field

[0001] The invention belongs to the field of linear motor testing, and in particular relates to a linear motor testing platform. Background Art

[0002] A linear motor is a device that converts electrical energy into mechanical energy for reciprocating linear motion. Compared to traditional devices that rely on the combination of a rotary motor and a lead screw to achieve linear motion, linear motors offer high transmission efficiency, frictionless transmission, fast motion speed, high positioning accuracy, and rapid dynamic response, making them widely used in high-speed precision machining. Based on their operating principles, linear motors can be categorized into various types, including induction linear motors, permanent magnet synchronous linear motors, reluctance linear motors, and switched flux linear motors. These linear motors share a common characteristic: they all have a mover and a stator, which can achieve contactless relative motion under the action of electromagnetic force. The mechanical state of the electromagnetic force is closely related to the gap between the mover and stator and the positional relationship between the mover and stator.

[0003] Before a new linear motor is launched, it is essential to test the mechanical properties of its electromagnetic force. Currently, the commonly used testing methods are as follows: Figure 1 (Patent CN102435944B) and Figure 2 shown. Figure 1 The main components of the test platform shown include the system platform, linear motor mover, linear motor stator, pulley, rope, weight, etc. Through the pulley and rope, relying on the deadweight of the weight, a unidirectional pulling force is applied to the linear motor mover. The weight of the weight is continuously increased. When the mover of the linear motor starts to run at a uniform speed, the pulling force on the mover and the electromagnetic braking force between the stator and mover will form a pair of balancing forces. The deadweight of the weight is equal to the electromagnetic braking force of the linear motor. The main defects of this test device are that it is not suitable for long-stroke testing, the loading force cannot be continuously changed, the test parameters are single, and it is easily affected by the deformation and vibration of the rope. Figure 2 The test platform shown uses another linear motor (prime motor) to generate tension. The prime motor mover and the mover of the motor under test are connected together by a towing device. The towing device is composed of a connecting plate 1, a tension pressure sensor, and a connecting plate 2 connected in sequence. The prime motor mover provides a pulling force to the left, and the mover module is subjected to a braking force to the right. When the assembly consisting of the prime motor mover, the towing device, and the mover module is in a state of rest or uniform motion, the pulling force and the braking force are in a state of balance, and the pulling force and the braking force can be measured by the tension pressure sensor. Figure 1 and Figure 2In the existing test method shown, the gap between the moving and stator is determined by the slide rail installed on the system platform and the slider installed on the mover. Once the two are fixed, the gap cannot be adjusted. Therefore, the existing test platform can only be used to measure one type of linear motor and cannot be used as a universal test platform for measuring multiple linear motors. It is difficult to replace the test motor. Moreover, using Figure 1 and Figure 2 The test method shown is also not convenient for measuring the influence of end effects on the mechanical properties of the linear motor. Summary of the Invention

[0004] The invention provides a linear motor test platform which can be used as a universal test platform for measuring various linear motors.

[0005] The objective of the present invention is achieved in the following manner: a linear motor test platform, comprising a test platform base plate assembly and a prime mover assembly for connecting to and providing tensile and compressive forces for a mover module of a linear motor to be tested arranged on the test platform base plate assembly; the base plate assembly of the test platform is respectively provided with a mover assembly for installing the mover module and a stator assembly for installing the stator module of the linear motor to be tested; the spacing between the stator assembly and the mover assembly is adjustable.

[0006] The stator assembly and the surface on which the mover module is installed in the mover assembly and the surface on which the stator module is installed are arranged vertically, so that the stator module to be tested installed on the stator assembly and the mover module to be tested installed on the mover assembly are arranged vertically.

[0007] The base plate assembly of the test platform includes a base plate and a vertical plate perpendicular to the base plate. The mover assembly is driven by the first drive mechanism of the passive sub-assembly to slide along the X direction and is arranged on the vertical plate, wherein the X direction is parallel to the length direction of the linear motor to be tested; the stator assembly is arranged on the base plate, and the stator assembly is slid along the Y direction and is arranged on the base plate by the second stator drive mechanism, wherein the Y direction is parallel to the normal direction of the stator module.

[0008] An X-direction movable platform assembly driven by a first stator driving mechanism to slide along an X-direction is provided on the bottom plate. The stator assembly is slidably provided on the X-direction movable platform assembly along a Y-direction through a second stator driving mechanism.

[0009] A stator X-direction guide rail slider mechanism is provided between the base plate and the X-direction moving platform assembly, a stator Y-direction guide rail slider mechanism is provided between the X-direction moving platform assembly and the stator assembly, and a mover X-direction guide rail slider mechanism is provided between the vertical plate and the mover assembly.

[0010] The mover assembly includes a mover module base plate slidably connected to the vertical plate and a mover module force measuring platform for fixing the mover module; a Y-direction pulling pressure sensor is arranged between the mover module base plate and the mover module force measuring platform.

[0011] A mover Y-direction guide rail slider mechanism is provided between the mover module bottom plate and the mover module force measuring platform.

[0012] The stator first drive mechanism, stator second drive mechanism and mover first drive mechanism are screw nut mechanisms with hand wheels or rockers.

[0013] The prime mover assembly includes a prime mover linear motor, a prime mover linear motor mover and a mover module are connected and an X-direction tension pressure sensor is provided, one end of the rope is connected to a weight, and the other end is connected to the X-direction tension pressure sensor through a pulley mechanism, and the other end of the X-direction tension pressure sensor is connected to the mover module.

[0014] Compared with the prior art, the gap between the moving and stator modules of the present invention can be freely adjusted according to needs, and can be used as a universal test platform for measuring various linear motors to make up for the shortcomings of existing test methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 Schematic diagram of the commonly used linear motor testing method 1.

[0016] Figure 2 This is a schematic diagram of the second commonly used linear motor testing method.

[0017] Figure 3 This is an overall schematic diagram of the linear motor test platform solution 1 proposed in the present invention.

[0018] Figure 4 This is an overall schematic diagram of the second linear motor test platform scheme proposed in the present invention.

[0019] Figure 5 This is a schematic diagram of the bottom plate assembly in the linear motor test platform proposed in the present invention.

[0020] Figure 6 This is a schematic diagram of the axial side of the linear motor rotor assembly in the linear motor test platform proposed in the present invention.

[0021] Figure 7 This is a schematic axial view of the other side of the linear motor rotor assembly in the linear motor test platform proposed in the present invention.

[0022] Figure 8 This is a side view of the linear motor mover assembly in the linear motor test platform proposed in the present invention.

[0023] Figure 9This is an exploded view of the linear motor rotor assembly in the linear motor test platform proposed in the present invention.

[0024] Figure 10 This is a schematic diagram of the linear motor stator assembly in the linear motor test platform proposed in the present invention.

[0025] Figure 11 This is a schematic axial view of the other side of the linear motor stator assembly in the linear motor test platform proposed in the present invention.

[0026] Figure 12 This is an exploded view of the linear motor stator assembly in the linear motor test platform proposed in the present invention.

[0027] Figure 13 This is a schematic diagram of the X-direction moving platform assembly in the linear motor test platform proposed in the present invention.

[0028] Figure 14 This is a schematic diagram of the other side of the X-direction moving platform component in the linear motor test platform proposed in the present invention.

[0029] Figure 15 This is a bottom schematic diagram of the X-direction moving platform assembly in the linear motor test platform proposed in the present invention.

[0030] Figure 16 This is an exploded schematic diagram of the X-direction moving platform assembly in the linear motor test platform proposed in the present invention.

[0031] Figure 17 It is a combination of a mover assembly and a base plate assembly in the linear motor test platform proposed by the present invention.

[0032] Figure 18 This is a side view of the assembly consisting of the mover assembly and the base plate assembly in the linear motor test platform proposed by the present invention.

[0033] Figure 19 It is a combination of the stator assembly and the X-direction moving platform assembly in the linear motor test platform proposed by the present invention.

[0034] Figure 20 It is a combination of the X-direction moving platform component and the base plate component in the linear motor test platform proposed by the present invention.

[0035] Figure 21 It is a combination of the stator assembly, the X-direction moving platform assembly and the base plate assembly in the linear motor test platform proposed by the present invention.

[0036] Figure 22 This is a schematic diagram of the first embodiment of the original power component in the linear motor test platform of the present invention.

[0037] Figure 23 This is a schematic diagram of the second scheme of the original power component in the linear motor test platform of the present invention.

[0038] Figure 24 This is a force diagram of the mover module of the linear motor test platform of the present invention (top view, taking Scheme 2 as an example). In the figure, Fn is the normal force on the mover module, along the Y direction; Ft is the tangential force on the mover module, along the X direction. Among them, the base plate 1, the vertical plate 2, the first linear guide 3, the second linear guide 4, the X-direction handwheel 5, the X-direction screw fixed end 6, the X-direction screw 7, the X-direction screw support end 8, the mover module 9, the mover module force measuring base plate 10, the mover module force measuring platform 11, the mover module base plate 12, the mover module X-direction slider 13, the first bolt 14, the first nut 15, the mover module Y-direction force measuring guide rail 16, the mover module Y-direction slider 17, the Y-direction tension pressure sensor 18, the stator base plate 19, the stator adapter plate 20, the stator module 21, the second bolt 22, the second nut 23, the stator module Y-direction slider 24, the third bolt 25, the fourth bolt 26, the Y-direction screw nut 27, the Y-direction screw nut Base 28, X-direction moving platform 29, Y-direction moving guide rail 30, Y-direction lead screw support end 31, Y-direction lead screw 32, Y-direction lead screw fixed end 33, Y-direction handwheel 34, moving platform X-direction slider 35, third nut 36, fourth nut 37, X-direction lead screw nut 38, X-direction lead screw nut seat 39, linear motor frame 40, prime mover linear motor mover 41, prime mover linear motor stator 42, drag rod 43, first connecting plate 44, first adapter plate 45, X-direction tension and pressure sensor 46, second adapter plate 47, second connecting plate 48, third adapter plate 49, first telescopic bracket 50, weight 51, rope 52, first pulley 53, second pulley 54, second telescopic bracket 55. DETAILED DESCRIPTION

[0039] In this application, unless otherwise specified or limited, the technical terms used herein shall have the ordinary meanings understood by persons skilled in the art. Terms such as "connected," "attached," "fixed," and "disposed" should be interpreted broadly and may refer to fixed, removable, or integral connections; direct or indirect connections through an intermediary; and mechanical or electrical connections. Unless otherwise specified or limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact or indirect contact through an intermediary. Furthermore, a first feature being "above," "above," or "above" a second feature may mean that the first feature is directly above or diagonally above the second feature, or simply means that the first feature is at a higher level than the second feature. A first feature being "below," "below," or "below" a second feature may mean that the first feature is directly below or diagonally below the second feature, or simply means that the first feature is at a lower level than the second feature. Relational terms such as first and second are used solely to distinguish one entity or operation from another and do not necessarily require or imply any actual relationship or order between these entities or operations. The terms used in the description, such as "center", "transverse", "longitudinal", "length", "width", "thickness", "height", "front", "back", "left", "right", "up", "down", "vertical", "horizontal", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential", "clockwise", "counterclockwise", etc., to indicate the orientation or position relationship are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, be constructed and operate in a specific orientation.

[0040] The following will provide a clear and complete description of the technical solution of the present invention in conjunction with the accompanying drawings and specific embodiments. Figure 1-24As shown, a linear motor testing platform includes a base plate assembly for the testing platform and a prime mover assembly that connects to and provides tension and pressure to a mover module 9 of a linear motor under test, mounted on the base plate assembly. The base plate assembly of the testing platform is provided with a mover assembly for mounting the mover module 9 and a stator assembly for mounting the stator module 21. The stator module 21 and the mover module 9 are arranged in parallel. The spacing between the stator assembly and the mover assembly is adjustable. In existing mechanisms, the distance between the stator module 21 and the mover module 9 under test is fixed and cannot be adjusted. In the present invention, the distance between the mover module 9 and the mover module 21 is freely adjustable, achieving two major goals: first, it can accommodate linear motors of different types and sizes by precisely adjusting the spacing between the stator module 21 and the mover module 9 under test, without having to replace sliders or add shims to change the gap. Second, it facilitates the replacement of linear motors by adjusting the Y-axis spacing between the mover module and the stator module using a handle screw to achieve a safe distance between the mover module and the stator module, and then replacing the new motor under test.

[0041] The stator assembly and the mover assembly are arranged vertically so that the stator module 21 to be tested, which is installed on the stator assembly, and the mover module 9 to be tested, which is installed on the mover assembly, are arranged vertically. In the existing testing mechanism, the electronic stator 21 to be tested and the mover module 9 to be tested are both arranged horizontally. When measuring the normal force between the two, gravity needs to be subtracted, which reduces the accuracy to a certain extent. Secondly, when the linear motor is arranged horizontally, in order to adjust the air gap length between the stator and the mover of the linear motor, it is generally adjusted by four columns in conjunction with a screw rod. The column strength requirements are high and the stability is poor. In addition, when the linear motor is arranged horizontally, the stator and mover of the linear motor are affected by their own gravity, which makes replacement difficult, and easily causes the mover and stator to be attracted together, making it difficult to fix the stator and mover of the linear motor from the back. In the present invention, the electronic stator module 21 to be tested and the mover module 9 to be tested are both arranged vertically. The measurement of the normal force between the two is not affected by the gravity of the electronic stator to be tested, the mover module, the stator assembly, or the mover assembly itself, and the measurement result is more accurate. Replacing the horizontally mounted linear motor with a vertical one reduces the impact of its own gravity on the installation and replacement of the motor, making it easier to install and replace the motor components.

[0042] The base plate assembly of the test platform includes a base plate 1 and a vertical plate 2 perpendicular to the base plate 1. The mover assembly is driven by the first drive mechanism of the passive member to slide along the X direction on the vertical plate 2, wherein the X direction is parallel to the length direction of the linear motor to be tested; the stator assembly is arranged on the base plate 2, and the stator assembly is slid along the Y direction on the base plate 1 by the second stator drive mechanism, wherein the Y direction is parallel to the normal direction of the stator module 21.

[0043] Furthermore, an X-direction movable platform assembly is provided on the base plate 1 and is driven by the first stator drive mechanism to slide in the X-direction. The stator assembly is slidably provided on the X-direction movable platform assembly in the Y-direction by the second stator drive mechanism. The stator assembly is provided on the base plate 1 by slidingly providing the X-direction movable platform assembly, and the X-direction movable platform assembly is slidably provided on the base plate 1, thereby enabling the stator assembly to slide in both the X-direction and the Y-direction.

[0044] A stator X-direction guide rail slider mechanism is set between the base plate 1 and the X-direction moving platform assembly, a stator Y-direction guide rail slider mechanism is set between the X-direction moving platform assembly and the stator assembly, and a mover X-direction guide rail slider mechanism is set between the vertical plate 2 and the mover assembly.

[0045] In addition, the mover assembly includes a mover module base plate 12 that is slidably connected to the vertical plate 2 and a mover module force measurement platform 11 that fixes the mover module. A Y-direction tension and pressure sensor 18 is provided between the mover module base plate 12 and the mover module force measurement platform 11. The Y-direction tension and pressure sensor 18 is used to measure the normal force between the mover module 9 and the stator module 21. The Y-direction tension and pressure sensor 18 can also be provided on the stator assembly.

[0046] A mover Y-direction guide rail and slider mechanism is provided between the mover module base plate 12 and the mover module force measuring platform 11 .

[0047] The stator first drive mechanism, the stator second drive mechanism, and the mover first drive mechanism are screw-nut mechanisms with hand wheels or rockers.

[0048] Specifically, the base plate assembly of the test platform may include a base plate 1, a vertical plate 2, a first linear guide rail 3, a second linear guide rail 4, an X-direction handwheel 5, an X-direction lead screw fixed end 6, an X-direction lead screw 7, and an X-direction lead screw supporting end 8.

[0049] The base plate 1 is placed on the ground, and the vertical plate 2 is vertically installed on the base plate 1; two first linear guide rails 3 are installed on the vertical side of the vertical plate 2, and the installation direction faces the -Y direction; two second linear guide rails 4 are installed on the horizontal surface of the base plate 1; the two first linear guide rails 3 and the two second linear guide rails 4 are parallel to each other and along the X direction.

[0050] The X-direction screw 7 is mounted on the base plate 1 via a screw fixing end 6 and a screw supporting end 8. The axis of the X-direction screw 7 is along the X-direction, and the rotation of the X-direction screw 7 can be achieved by rotating the X-direction handwheel 5. The X-direction screw 7 is a sliding screw with a self-locking function.

[0051] The mover assembly includes a mover module 9, a mover module force measuring base plate 10, a mover module force measuring platform 11, a mover module bottom plate 12, a mover module X-direction slider 13, a first bolt 14, a first nut 15, a mover module Y-direction force measuring guide rail 16, a mover module Y-direction slider 17, and a Y-direction tensile pressure sensor 18.

[0052] The components of the mover assembly are installed as follows: the mover module 9 is installed on the mover module force measuring base plate 10, and the installation direction faces the -Y direction; the mover module force measuring base plate 10 and the mover module force measuring platform 11 are fixedly connected by a first bolt 14 and a first nut 15; the mover module Y-direction slider 17 is fixedly installed on the mover module force measuring platform 11, and the installation surface faces the +Y direction; the mover module Y-direction force measuring guide rail 16 is fixedly installed on the mover module base plate 12, and the installation surface faces the -Y direction; one side of the Y-direction tensile pressure sensor 18 is fixedly connected to the center of the +Y-direction surface of the mover module force measuring platform 11, and the other side is fixedly connected to the center of the -Y-direction surface of the mover module base plate 12; the X-direction guide rail slider 13 is installed on the +Y-direction surface of the mover module base plate 12; the mover module Y-direction force measuring guide rail 16 is installed in conjunction with the mover module Y-direction slider 17; the mover module X-direction slider 13 is installed in conjunction with the first linear guide rail 3 mentioned above.

[0053] During operation, the mover module 9 will be subjected to forces along the X and Y directions, and the Y-direction pulling pressure sensor 18 can be used to detect the pulling pressure in the Y direction exerted on the mover module 9; the mover module Y-direction force measuring guide rail 16 and the mover module Y-direction slider rail 17 can limit the movement of the mover module force measuring platform 11 so that it only moves along the Y direction, so that the Y-direction pulling pressure sensor 18 can test the force in the Y direction exerted on the mover module 9.

[0054] The stator assembly includes a stator base plate 19, a stator adapter plate 20, a linear motor stator module 21, a second bolt 22, a second nut 23, a stator module Y-direction slider 24, a third bolt 25, a fourth bolt 26, a Y-direction lead screw nut 27, and a Y-direction lead screw nut seat 28.

[0055] The various components of the stator assembly are installed as follows:

[0056] The stator adapter plate 20 is fixed to the +Y-facing surface of the stator base plate 19 by means of the second bolt 22 and the second nut 23; the stator module 21 of the linear motor is fixedly mounted on the +Y-facing surface of the stator adapter plate 20; the stator module Y-direction slider 24 is fixedly mounted on the -Z-facing surface of the stator base plate 19; the Y-direction lead screw nut 27 and the Y-direction lead screw nut seat 28 are connected by the fourth bolt 26, and then fixedly mounted on the -Z-facing surface of the stator base plate 19 by means of the third bolt 25.

[0057] The X-direction moving platform assembly includes an X-direction moving platform 29, a Y-direction moving guide rail 30, a Y-direction lead screw support end 31, a Y-direction lead screw 32, a Y-direction lead screw fixed end 33, a Y-direction handwheel 34, a moving platform X-direction slider 35, a third nut 36, a fourth nut 37, an X-direction lead screw nut 38, and an X-direction lead screw nut seat 39.

[0058] The components of the X-direction moving platform assembly are installed as follows:

[0059] The Y-direction guide rail 30 is mounted on the +Z-facing surface of the X-direction platform 29, with its axial direction aligned along the Y direction. The X-direction slider 35 is mounted on the -Z-facing surface of the X-direction platform 29, with its axial direction aligned along the X direction. The Y-direction lead screw 32 is mounted on the platform 29 via a Y-direction lead screw fixed end 33 and a Y-direction lead screw support end 31. The axis of the Y-direction lead screw 32 is aligned along the Y direction, and rotation of the Y-direction lead screw 32 can be achieved by rotating the Y-direction handwheel 34. The X-direction lead screw nut 38 is connected to the X-direction lead screw nut seat 39 via a fourth nut 37 and corresponding bolts, and then secured to the -Z-facing surface of the X-direction platform 29 by a third nut 36 and corresponding bolts. The Y-direction lead screw 32 is a self-locking sliding lead screw.

[0060] The installation method between the mover assembly and the base plate assembly is as follows:

[0061] The X-direction slider 13 in the moving subassembly and the first linear guide rail 3 in the base plate assembly form two pairs of moving pairs. Under the drag of the original force along the X direction, the moving subassembly can move along the X direction.

[0062] The installation method between the stator assembly and the X-direction moving platform assembly is as follows:

[0063] The Y-direction lead screw nut 27 in the stator assembly and the Y-direction lead screw 32 in the X-direction movable platform assembly form a pair of screw pairs, and the Y-direction slider 24 of the stator module and the Y-direction movable guide rail 30 in the X-direction movable platform assembly form four pairs of movable pair guide rail slider mechanisms. When the handwheel 34 is turned, the stator assembly can move along the Y direction.

[0064] The installation method between the X-direction moving platform assembly and the base plate assembly is as follows:

[0065] The X-direction lead screw nut 38 in the X-direction moving platform assembly and the X-direction lead screw 7 in the base plate assembly form a pair of screw pairs. The X-direction slider 35 of the moving platform and the second linear guide rail 4 in the base plate assembly form two pairs of guide rail and slider mechanisms. Under the rotation of the X-direction handwheel 5, the X-direction moving platform assembly can move along the X-direction.

[0066] The power assembly may include a power linear motor, with the power linear motor mover connected to the mover module 9 and an X-direction tension and pressure sensor 46 disposed therebetween. Specifically, the power linear motor stator 41 is fixed to the linear motor frame 40, and the power linear motor mover 42 is connected to the drag rod 43. The drag rod 43, the first connecting plate 44, the first adapter plate 45, the X-direction tension and pressure sensor 46, the second adapter plate 47, the second connecting plate 48, and the third adapter plate 49 are sequentially connected along the X-direction. The third adapter plate 49 is fixed to the mover module base plate 12 in the mover assembly. The power linear motor mover 41 can apply a pulling force or a thrust along the X-direction, and the mover assembly can be subjected to the pulling force or thrust along the X-direction. At the same time, the X-direction tension and pressure sensor 46 can measure the pulling force or thrust value applied to the mover assembly.

[0067] Alternatively, the prime mover assembly also includes a pulley mechanism. A rope 52 is connected to a weight 51 at one end and to an X-direction tension and pressure sensor 46 at the other end through the pulley mechanism. The other end of the X-direction tension and pressure sensor 46 is connected to the mover module 9. Specifically, the pulley mechanism includes a first telescopic bracket 50 and a second telescopic bracket 55, each of which is provided with a first pulley 53 and a second pulley 54, respectively. One end of the rope 52 is connected to the weight 51 and the other end passes through the upper surface of the first pulley 53 and the lower surface of the second pulley 54, respectively, to be secured to the first connecting plate 44. The first connecting plate 44, the first adapter plate 45, the X-direction tension and pressure sensor 46, the second adapter plate 47, the second connecting plate 48, and the third adapter plate 49 are sequentially connected along the X-direction. The third adapter plate 49 is secured to the bottom plate of the mover module 9 in the mover assembly. Depending on the weight of the weight 51, different tensile forces can be applied to the mover assembly, and the X-direction tension and pressure sensor 46 can measure the tensile forces applied to the mover assembly.

[0068] In specific implementation, the mechanical performance test of the linear motor includes the normal force Fn and tangential force Ft between the linear motor's mover module 9 and stator module 21 under different gap conditions. The magnitude of the normal force Fn and tangential force Ft is closely related to the gap between the mover module 9 and stator module 21 of the linear motor under test and their positional relationship along the X-direction. By rotating the Y-direction handwheel 34, the gap between the mover module 9 and stator module 21 of the linear motor under test can be adjusted. By rotating the X-direction handwheel 5, the relative position of the mover module 9 and stator module 21 of the linear motor under test along the X-direction can be adjusted.

[0069] The Y-direction tension pressure sensor 18 measures the normal force Fn. When the mover assembly is stationary or moving along the Y-direction, the value measured by the Y-direction tension pressure sensor 18 is the normal force Fn. The X-direction tension pressure sensor 46 measures the tangential force Ft. When the mover assembly is stationary or moving at a constant speed along the X-direction, the value measured by the X-direction tension pressure sensor 46 is the tangential force Ft.

[0070] By adjusting the X-direction hand wheel 5, when the mover module 9 is located at the end position of the stator module 21 along the X-direction, the mechanical properties between the mover and stator of the linear motor under end effect can be measured.

[0071] The above-mentioned X-direction lead screw 7 and Y-direction lead screw 32 are both sliding lead screws with self-locking function, so that the X-direction lead screw 7 and Y-direction lead screw 32 will not rotate on their own even under the action of axial force, thereby ensuring that the relative position between the moving and stator of the linear motor will not change during the measurement process.

[0072] The linear motor test platform proposed in the present invention is not limited by the type of linear motor and can be used to measure a variety of linear motors, including induction linear motors, permanent magnet synchronous linear motors, reluctance linear motors, switched flux linear motors, etc.

[0073] The mover module 9 and stator module 21 mentioned in the present invention are not limited by the primary and secondary of the linear motor. The primary of the linear motor can be set as the mover module 9 and the secondary as the stator module 21, or the primary can be set as the stator module 21 and the secondary can be set as the mover module 9.

[0074] The various technical features of the above-mentioned embodiments can be combined arbitrarily, and as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification. The split screw nut used in the present invention is changed to an integrated screw nut; the sliding screws 7 and 32 with self-locking function used in the present invention are changed to ball screws, and additional locking devices are added to make them have locking functions; the screw fixing method used in the present invention is changed to other fixing methods, etc. Without departing from the overall concept of the present invention, the technical solution according to the present invention and the equivalent replacement or change, as well as the several changes and improvements made, should also be regarded as the scope of protection of the present invention.

Claims

1. A linear motor test platform, comprising a test platform base plate assembly and a motive force assembly for connecting to and providing tension and pressure to a mover module of a linear motor under test disposed on the test platform base plate assembly, characterized in that: The bottom plate assembly of the test platform is respectively provided with a mover assembly for mounting a mover module and a stator assembly for mounting a stator module of the linear motor to be tested; the distance between the stator assembly and the mover assembly is adjustable; The stator assembly and the surface on which the mover module is mounted in the mover assembly and the surface on which the stator module is mounted are arranged vertically so that the stator module to be tested mounted on the stator assembly and the mover module to be tested mounted on the mover assembly are arranged vertically; The base plate assembly of the test platform includes a base plate and a vertical plate perpendicular to the base plate, the mover assembly is driven by the first drive mechanism of the passive sub-assembly to slide along the X direction and is arranged on the vertical plate, wherein the X direction is parallel to the length direction of the linear motor to be tested; the stator assembly is arranged on the base plate, and the stator assembly is slid along the Y direction and is arranged on the base plate by the second stator drive mechanism, wherein the Y direction is parallel to the normal direction of the stator module; An X-direction movable platform assembly driven by a first stator driving mechanism to slide along an X-direction is provided on the bottom plate. The stator assembly is slidably provided on the X-direction movable platform assembly along a Y-direction through a second stator driving mechanism.

2. A linear motor test platform according to claim 1, characterized in that: A stator X-direction guide rail slider mechanism is provided between the base plate and the X-direction moving platform assembly, a stator Y-direction guide rail slider mechanism is provided between the X-direction moving platform assembly and the stator assembly, and a mover X-direction guide rail slider mechanism is provided between the vertical plate and the mover assembly.

3. The linear motor test platform according to claim 1, characterized in that: The mover assembly includes a mover module base plate slidably connected to the vertical plate and a mover module force measuring platform for fixing the mover module; a Y-direction pulling pressure sensor is arranged between the mover module base plate and the mover module force measuring platform.

4. A linear motor test platform according to claim 3, characterized in that: A mover Y-direction guide rail slider mechanism is provided between the mover module bottom plate and the mover module force measuring platform.

5. The linear motor test platform according to claim 1, characterized in that: The stator first drive mechanism, the stator second drive mechanism, and the mover first drive mechanism are screw-nut mechanisms with hand wheels or rockers.

6. The linear motor test platform according to claim 1, characterized in that: The prime mover assembly includes a prime mover linear motor, a prime mover linear motor mover and a mover module are connected and an X-direction tension pressure sensor is provided, one end of the rope is connected to a weight, and the other end is connected to the X-direction tension pressure sensor through a pulley mechanism, and the other end of the X-direction tension pressure sensor is connected to the mover module.

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