Linear motor testing device and linear motor testing method

Abstract

The present application relates to the field of motors, and discloses a linear motor testing device and a linear motor testing method, wherein the device comprises: a base, provided with a test position; a clamping mechanism, provided corresponding to the test position, for clamping its slide assembly when the linear motor to be tested is placed in the test position, so that the slide assembly applies pressure to the guide rail assembly of the linear motor to be tested; a tension driving mechanism, for applying tension to the clamping mechanism to drive the clamping mechanism to drive the slide assembly to move along the extension direction of the guide rail assembly; a tension detection mechanism, for detecting the tension detection data of the tension driving mechanism on the slide assembly, so as to obtain the friction coefficient between the slide assembly and the guide rail assembly according to the tension detection data. Thus, when the slide assembly moves at a uniform speed relative to the guide rail assembly, the friction resistance between the slide assembly and the guide rail assembly can be calculated by the tension detection data, and then in the subsequent application of the linear motor to be tested, the slide assembly can be precisely controlled in motion according to the conversion relationship between the clamping pressure and the friction coefficient.

Description

Technical Field

[0001] The present application relates to the field of motor preparation, and in particular to a linear motor testing device and a linear motor testing method. Background Art

[0002] The integrated linear motor has an integrated motor stator and guide rail assembly. Due to its high precision and high stability, the integrated linear motor has been widely used in many fields such as industrial automation, semiconductor manufacturing, precision measuring instruments, and medical equipment that requires high-precision movement. Whether it is the precision control of industrial robots, high-precision positioning in semiconductor production equipment, or stable support in medical equipment, the integrated linear motor can provide excellent performance and support.

[0003] Preloading is a method of applying a load to the slide assembly and the guide rail assembly externally to eliminate the clearance between the slide assembly and the guide rail assembly to improve the overall rigidity. However, when assembling the linear motor and preloading the slide assembly and the guide rail assembly, it is impossible to determine the effect of the applied load on the friction coefficient between the slide assembly and the guide rail assembly, which makes it difficult to perform precise motion control of the slide assembly in the linear motor, greatly affecting the performance of the linear motor. Summary of the invention

[0004] The embodiments of the present application provide a linear motor testing device and a linear motor testing method, which are intended to obtain the conversion relationship between the pressure applied by the slide assembly to the guide rail assembly in the linear motor to be tested and the friction coefficient between the slide assembly and the guide rail assembly, so as to accurately control the motion of the slide assembly, thereby ensuring the thrust performance and operation stability of the linear motor to be tested.

[0005] In a first aspect, an embodiment of the present application provides a linear motor testing device, comprising:

[0006] A base, wherein the base is provided with a test position for placing the linear motor to be tested, wherein the linear motor to be tested includes a guide rail assembly that can be installed at the test position and a slide assembly that can move relative to the guide rail assembly, the slide assembly at least includes a slide base and a first adjustment block and a second adjustment block connected to the slide base, the first adjustment block and the second adjustment block are arranged on opposite sides of the guide rail assembly, the distance between the first adjustment block and the second adjustment block is adjustable, and the first adjustment block is movably connected to the guide rail assembly, and the second adjustment block is movably connected to the guide rail assembly;

[0007] A clamping mechanism, the clamping mechanism is arranged corresponding to the test position, and is used to clamp the slide assembly when the linear motor to be tested is placed in the test position, so that the first adjustment block and the second adjustment block apply pressure to the guide rail assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjustable;

[0008] A tension driving mechanism, the tension driving mechanism is connected to the base and the clamping mechanism, and is used to apply tension to the clamping mechanism when the clamping mechanism clamps the guide rail assembly, so as to drive the clamping mechanism to drive the slide assembly to move relative to the guide rail assembly along the extension direction of the guide rail assembly;

[0009] The tension detection mechanism is arranged corresponding to the tension driving mechanism and is used to detect the tension applied by the tension driving mechanism to the slide assembly to obtain tension detection data, so as to obtain the friction coefficient between the slide assembly and the guide rail assembly according to the tension detection data.

[0010] In some embodiments, the tension drive mechanism includes a first linear motor and a transmission assembly:

[0011] Among them, the first linear motor includes a stator guide rail and a sliding table. The stator guide rail is connected to the base to form a guide track extending in the same direction as the guide rail assembly. The sliding table is adapted to the guide rail and is connected to the clamping mechanism through a transmission assembly. It can slide along the guide rail relative to the stator guide rail to apply pulling force to the clamping mechanism through the transmission assembly.

[0012] In some embodiments, the transmission assembly includes an elastic transmission member, a first end of the elastic transmission member is connected to the sliding platform, and a second end of the elastic transmission member is connected to the clamping mechanism;

[0013] The tension detection mechanism is connected to the elastic transmission member and is used to detect the tension on the elastic transmission member to obtain tension detection data.

[0014] In some embodiments, the tension driving mechanism further includes a position adjustment component, and the position adjustment component includes:

[0015] An adjustment rail connected to the sliding table to form a position adjustment track extending along a first direction, wherein the first direction is a direction in which the first adjustment block and the second adjustment block are arranged relative to each other;

[0016] The adjusting slider is connected to the clamping mechanism, and the adjusting slider is movably connected to the adjusting guide rail through a position adjustment track.

[0017] In some embodiments, the clamping mechanism includes a first clamping member, a second clamping member, a clamping transmission assembly, and a drive motor;

[0018] Wherein, the first clamping member and the second clamping member are arranged on opposite sides of the test position, and the first clamping member and the second clamping member are movably connected via a clamping transmission assembly;

[0019] The drive motor is connected to the clamping transmission assembly and is used to drive at least one of the first clamping member and the second clamping member to move toward the other through the clamping transmission assembly to clamp the slide assembly of the linear motor to be tested, so that the first adjustment block and the second adjustment block apply clamping pressure to the guide rail assembly.

[0020] In some embodiments, the clamping transmission assembly includes a worm gear, a worm and a transmission screw;

[0021] The first clamping member is connected and fixed to the tension driving mechanism, and is formed with a rotation groove opposite to the second clamping member, the second clamping member is formed with a first thread structure, the first end of the transmission screw is rotationally connected to the rotation groove, the second end of the transmission screw is formed with a second thread structure adapted to the first thread structure, and when the transmission screw rotates relative to the rotation groove, the transmission screw drives the second clamping member to move toward or away from the first clamping member through the first thread structure and the second thread structure;

[0022] The worm wheel is sleeved on the transmission screw and connected with the transmission screw, the worm and the worm wheel form a transmission connection, the output end of the drive motor is connected to the worm, and is used to drive the transmission screw to rotate relative to the rotating groove through the worm and the worm wheel.

[0023] In some embodiments, the linear motor testing device further includes a controller, which is connected to the clamping mechanism, the tension driving mechanism, and the tension detection mechanism, and is used to:

[0024] When the linear motor to be tested is placed in the test position, the clamping mechanism is controlled to clamp the slide assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjusted to a target pressure;

[0025] Controlling the tension driving mechanism to drive the clamping mechanism to clamp the slide assembly to move at a uniform speed relative to the track assembly, and receiving the tension detection data detected by the tension detection mechanism during the uniform speed movement of the slide assembly;

[0026] The friction coefficient between the slide assembly and the guide rail assembly is determined based on the tension test data.

[0027] In some embodiments, the clamping mechanism includes a first clamping member, a second clamping member, a clamping transmission assembly, a drive motor, and a pressure sensor;

[0028] Wherein, the first clamping member and the second clamping member are arranged on opposite sides of the test position and are movably connected through the clamping transmission assembly;

[0029] The driving motor is connected to the controller and is used to drive the first clamping member and the second clamping member to clamp the slide assembly located at the test position through the clamping transmission assembly;

[0030] The pressure sensor is connected to the controller and is disposed on at least one of the first clamping member and the second clamping member, and is used to detect the pressure feedback of the first clamping member and the second clamping member on the slide assembly;

[0031] The controller is also used to receive pressure feedback detected by the pressure sensor, and control the drive motor to adjust the clamping pressure of the first clamping member and the second clamping member on the slide assembly to a target pressure according to the pressure feedback.

[0032] In some embodiments, the controller is further configured to:

[0033] When the linear motor to be tested is placed in the test position, the clamping mechanism is controlled to clamp the slide assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjusted to a first target pressure, the tension driving mechanism is controlled to drive the clamping mechanism to clamp the slide assembly to perform a first uniform motion relative to the track assembly, and the tension detection mechanism receives first tension detection data detected by the tension detection mechanism during the first uniform motion process of the slide assembly;

[0034] When the slide assembly and the guide rail assembly are reset, the clamping mechanism is controlled to clamp the slide assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjusted to a second target pressure, the tension driving mechanism is controlled to drive the clamping mechanism to clamp the slide assembly to perform a second uniform motion relative to the track assembly, and the second tension detection data detected by the tension detection mechanism during the second uniform motion process of the slide assembly is received;

[0035] According to the first target pressure, the second target pressure, the first tension detection data and the second tension detection data, a conversion relationship between the clamping pressure of the clamping mechanism on the slide assembly and the friction coefficient between the slide assembly and the guide rail assembly is determined.

[0036] In a second aspect, the present application further provides a linear motor testing method, which is applied to any linear motor testing device provided in the present application, and the method includes:

[0037] When the linear motor to be tested is placed in the test position, the clamping mechanism is controlled to clamp the slide assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjusted to a target pressure;

[0038] Controlling the tension driving mechanism to drive the clamping mechanism to clamp the slide assembly to move at a uniform speed relative to the track assembly, and receiving the tension detection data detected by the tension detection mechanism during the uniform speed movement of the slide assembly;

[0039] The friction coefficient between the slide assembly and the guide rail assembly is determined based on the tension test data.

[0040] In summary, the embodiments of the present application provide a linear motor testing device and a linear motor testing method, the linear motor testing device comprising: a base, the base being provided with a test position for placing the linear motor to be tested, wherein the linear motor to be tested comprises a guide rail assembly that can be installed at the test position and a slide assembly that can move relative to the guide rail assembly, the slide assembly at least comprising a slide base and a first adjusting block and a second adjusting block connected to the slide base, the first adjusting block and the second adjusting block being arranged on opposite sides of the guide rail assembly, the distance between the first adjusting block and the second adjusting block being adjustable, and the first adjusting block being movably connected to the guide rail assembly, and the second adjusting block being movably connected to the guide rail assembly; a clamping mechanism, the clamping mechanism corresponding to the test position A configuration is provided for clamping the slide assembly when the linear motor to be tested is placed in the test position, so that the first adjustment block and the second adjustment block apply pressure to the guide rail assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjustable; a tension driving mechanism, the tension driving mechanism connects the base and the clamping mechanism, and is used to apply tension to the clamping mechanism when the clamping mechanism clamps the guide rail assembly, so as to drive the clamping mechanism to drive the slide assembly to move relative to the guide rail assembly along the extension direction of the guide rail assembly; a tension detection mechanism, the tension detection mechanism is provided corresponding to the tension driving mechanism, and is used to detect the tension applied by the tension driving mechanism to the slide assembly to obtain tension detection data, so as to obtain the friction coefficient between the slide assembly and the guide rail assembly according to the tension detection data. The linear motor testing device provided in the embodiment of the present application adjusts the clamping pressure of the clamping mechanism on the slide assembly to adjust the clamping pressure applied by the first adjusting block and the second adjusting block to the guide rail assembly, and drives the clamping mechanism to clamp the slide assembly and move relative to the guide rail assembly along the extension direction of the guide rail assembly. Therefore, when the slide assembly moves at a uniform speed relative to the guide rail assembly, the friction resistance between the slide assembly and the guide rail assembly can be calculated based on the tension detection data, and then the friction coefficient between the slide assembly and the guide rail assembly under the current clamping pressure of the clamping mechanism on the slide assembly can be calculated based on the friction resistance. Furthermore, in the subsequent application of the linear motor to be tested, the motion control of the slide assembly in the linear motor to be tested can be carried out according to the conversion relationship between the clamping pressure and the friction coefficient, so as to ensure the thrust performance and operation stability of the linear motor to be tested. BRIEF DESCRIPTION OF THE DRAWINGS

[0041] In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings required for use in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present application. For those skilled in the art, other drawings can be obtained based on these drawings without creative work.

[0042] Figure 1 A schematic diagram of the structure of a linear motor to be tested corresponding to the linear motor testing device provided in an embodiment of the present application;

[0043] Figure 2 for Figure 1 The cross-sectional schematic diagram of the linear motor to be tested is shown;

[0044] Figure 3 for Figure 1 The structural schematic diagram of the slide assembly in the linear motor to be tested is shown;

[0045] Figure 4 A schematic diagram of the structure of a linear motor testing device provided in an embodiment of the present application;

[0046] Figure 5 A schematic diagram of a portion of the structure of a tension drive mechanism in a linear motor testing device provided in an embodiment of the present application;

[0047] Figure 6 A schematic diagram of the structure of a clamping mechanism in a linear motor testing device provided in an embodiment of the present application;

[0048] Figure 7 A schematic block diagram of a linear motor testing device provided in an embodiment of the present application;

[0049] Figure 8 for Figure 1 A schematic diagram of a first ball structure and a second ball structure in a linear motor to be tested is shown;

[0050] Fig. 9 A schematic diagram of the steps of the linear motor testing method provided in the embodiment of the present application;

[0051] Reference numerals:

[0052] 1. Linear motor test device; 10. Base; 11. Test position; 12. Auxiliary guide rail; 20. Clamping mechanism; 21. First clamping member; 22. Second clamping member; 23. Drive motor; 24. Pressure sensor; 25. Clamping transmission assembly; 25. Worm gear; 26. Worm; 27. Drive screw; 30. Tension drive mechanism; 31. First linear motor; 311. Stator guide rail; 312. Sliding table; 3121. First guide groove; 31 22. Second guide groove; 32. Transmission assembly; 321. Elastic transmission member; 322. Adapter block; 33. Position adjustment assembly; 331. Adjustment guide rail; 332. Adjustment slider; 40. Tension detection mechanism; 50. Controller; 6. Linear motor to be tested; 61. Guide rail assembly; 62. Slide assembly; 621. Slide base; 622. First adjustment block; 623. Second adjustment block; 624. First ball bearing structure; 625. Second ball bearing structure. DETAILED DESCRIPTION

[0053] The technical solutions of the embodiments of the present application will be described below in conjunction with the drawings in the embodiments of the present application. It is obvious that the described embodiments are some embodiments of the present application, rather than all embodiments. Based on the embodiments of the present application, other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of this application. The flowcharts shown in the accompanying drawings are only examples, and do not necessarily include all the contents and operations / steps, nor do they have to be executed in the described order. For example, some operations / steps can also be decomposed, combined or partially merged, so the actual execution order may change according to actual conditions.

[0054] The integrated linear motor has an integrated motor stator and guide rail assembly. Due to its high precision and high stability, the integrated linear motor has been widely used in many fields such as industrial automation, semiconductor manufacturing, precision measuring instruments, and medical equipment that requires high-precision movement. Whether it is the precision control of industrial robots, high-precision positioning in semiconductor production equipment, or stable support in medical equipment, the integrated linear motor can provide excellent performance and support.

[0055] Preloading is a method of applying a load to the slide assembly and the guide rail assembly externally to eliminate the clearance between the slide assembly and the guide rail assembly to improve the overall rigidity. However, when assembling the linear motor and preloading the slide assembly and the guide rail assembly, it is impossible to determine the effect of the applied load on the friction coefficient between the slide assembly and the guide rail assembly, which makes it difficult to perform precise motion control of the slide assembly in the linear motor, greatly affecting the performance of the linear motor.

[0056] Based on this, the present application provides a linear motor testing device and a linear motor testing method to measure the friction coefficient between the slide assembly and the guide rail assembly under the condition that the slide assembly in the linear motor to be tested applies a quantitative pressure to the guide rail assembly. Furthermore, the conversion relationship between the pressure applied by the slide assembly to the guide rail assembly and the friction coefficient between the slide assembly and the guide rail assembly can be obtained based on multiple sets of quantitative pressures and the friction coefficient measured according to the quantitative pressures.

[0057] See also Figure 1 and Figure 3 , Figure 1 This is a schematic diagram of the structure of the linear motor 6 to be tested corresponding to the linear motor testing device 1 provided in the embodiment of the present application, Figure 2 for Figure 1 The cross-sectional schematic diagram of the linear motor 6 to be tested is shown in FIG. Figure 3 for Figure 1 The structural schematic diagram of the slide assembly 62 in the linear motor 6 to be tested is shown.

[0058] like Figure 1 to Figure 2As shown, this embodiment firstly specifically describes the structure of the linear motor 6 to be tested by the linear motor testing device 1 .

[0059] Specifically, the linear motor 6 to be tested includes a guide rail assembly 61 and a slide assembly 62, wherein the guide rail assembly 61 can be connected and fixed at a preset position, and the slide assembly 62 is adapted to the guide rail assembly 61, and the slide assembly 62 can slide relative to the guide rail assembly 61 along the guide rail formed by the guide rail assembly 61.

[0060] As an embodiment, the slide assembly 62 at least includes a slide base 621 and a first adjustment block 622 and a second adjustment block 623 connected to the slide base 621, the first adjustment block 622 and the second adjustment block 623 are arranged on opposite sides of the guide rail assembly 61, the distance between the first adjustment block 622 and the second adjustment block 623 is adjustable, and the first adjustment block 622 is movably connected to the guide rail assembly 61, and the second adjustment block 623 is movably connected to the guide rail assembly 61. Therefore, when the pressure applied to the first adjustment block 622 and the second adjustment block 623 from the outside of the slide assembly 62 (i.e., the side of the first adjustment block 622 away from the guide rail assembly 61 and the side of the second adjustment block 623 away from the guide rail assembly 61, which will not be repeated below) increases, the pressure applied to the guide rail assembly 61 by the first adjustment block 622 and the second adjustment block 623 will also increase.

[0061] like Figure 3 As shown, as an embodiment, a first ball structure 624 is provided on a side of the first adjustment block 622 close to the guide rail assembly 61, and a second ball structure 625 is provided on a side of the second adjustment block 623 close to the guide rail assembly 61. The first adjustment block 622 forms a sliding fit in the extension direction of the guide rail assembly 61 through the first ball structure 624, and the second adjustment block 623 forms a sliding fit in the extension direction of the guide rail assembly 61 through the second ball structure 625, so that the slide assembly 62 can slide relative to the guide rail assembly 61 in the extension direction of the guide rail assembly 61.

[0062] For the transmission function between the first ball structure 624 and the second ball structure 625, please refer to Figure 8 , Figure 8 for Figure 1 The schematic diagram of the first ball structure 624 and the second ball structure 625 in the linear motor 6 to be tested is shown.

[0063] like Figure 8As shown, the first ball structure 624 and / or the second ball structure 625 include a reflow device arranged near one side of the guide rail, and when the balls of the first ball structure 624 and / or the second ball structure 625 roll to the outside, part of the balls come into direct contact with the guide rail assembly 61, wherein the part in direct contact with the first ball structure 624 is called the load-bearing area, and the part in which the reflow device does not directly contact with the first ball structure 624 is called the non-load-bearing area, and the balls circulate outside and inside the reflow device when the sliding plate moves, i.e., they circulate in the load-bearing area and the non-load-bearing area of ​​the reflow device.

[0064] It should be noted that when the ball is inside the recirculator, it is not affected by the external pressure generated by the guide rail assembly 61. The function of the recirculator is only to make the ball return and reflux to achieve ball circulation. At this time, the ball and the inner wall of the recirculator are in rolling contact and sliding contact at the same time.

[0065] Specifically, when the pressure applied from the outside of the slide assembly 62 to the first adjustment block 622 and the second adjustment block 623 increases, the pressure applied by the first adjustment block 622 to the guide rail assembly 61 through the first ball structure 624 increases, and the pressure applied by the second adjustment block 623 to the guide rail assembly 61 through the second ball structure 625 increases.

[0066] It should be noted that the ratio of the pressure applied from the outside of the slide assembly 62 to the first adjustment block 622 and the pressure applied by the first ball structure 624 to the guide rail assembly 61 is determined by the contact angle between the first ball structure 624, the first adjustment block 622 and the guide rail assembly 61. Similarly, the ratio of the pressure applied from the outside of the slide assembly 62 to the second adjustment block 623 and the pressure applied by the second ball structure 625 to the guide rail assembly 61 is determined by the contact angle between the second ball structure 625, the second adjustment block 623 and the guide rail assembly 61.

[0067] See also Figures 4 to 7 , Figure 4 This is a schematic diagram of the structure of a linear motor testing device 1 provided in an embodiment of the present application. Figure 5 This is a partial structural diagram of the tension driving mechanism 30 in the linear motor testing device 1 provided in an embodiment of the present application. Figure 6 This is a schematic diagram of the structure of the clamping mechanism 20 in the linear motor testing device 1 provided in an embodiment of the present application. Figure 7 This is a schematic block diagram of the modules of the linear motor testing device 1 provided in an embodiment of the present application.

[0068] like Figures 1 to 7 As shown, the linear motor testing device 1 of the embodiment of the present application includes a base 10, a clamping mechanism 20, a tension driving mechanism 30 and a tension detection mechanism 40. The components in the linear motor testing device 1 are described in detail below.

[0069] Specifically, the base 10 is used to provide fixed support for the linear motor testing device 1, and a test position 11 is provided on the base 10, which is used to place the linear motor 6 to be tested, and when the linear motor 6 to be tested is placed in the test position 11, the guide rail assembly 61 of the linear motor 6 to be tested is connected and fixed to the test position 11, and the slide assembly 62 can slide relative to the guide rail assembly 61.

[0070] Specifically, the clamping mechanism 20 is arranged corresponding to the test position 11, and is used to clamp the slide assembly 62 when the linear motor 6 to be tested is placed in the test position 11, so that the first adjustment block 622 and the second adjustment block 623 in the slide assembly 62 apply pressure to the guide rail assembly 61, and the clamping pressure of the clamping mechanism 20 on the slide assembly 62 is adjustable, thereby, the pressure applied by the first adjustment block 622 and the second adjustment block 623 to the guide rail assembly 61 is adjusted accordingly.

[0071] As an embodiment, a first ball structure 624 is provided on a side of the first adjustment block 622 close to the guide rail assembly 61, and a second ball structure 625 is provided on a side of the second adjustment block 623 close to the guide rail assembly 61. The pressure applied by the first adjustment block 622 and the second adjustment block 623 to the guide rail assembly 61 refers to the pressure applied by the first ball structure 624 and the second ball structure 625 to the guide rail assembly 61.

[0072] Specifically, the tension driving mechanism 30 is connected to the base 10 and the clamping mechanism 20, and is used to apply tension to the clamping mechanism 20 when the clamping mechanism 20 clamps the guide rail assembly 61, so as to drive the clamping mechanism 20 to drive the slide assembly 62 clamped by it to move relative to the guide rail assembly 61 and the base 10 along the extension direction of the guide rail assembly 61. The tension detection mechanism 40 is provided corresponding to the tension driving mechanism 30, and is used to detect the tension applied by the tension driving mechanism 30 to the slide assembly 62 to obtain tension detection data, so as to obtain the friction coefficient between the slide assembly 62 and the guide rail assembly 61 according to the tension detection data.

[0073] It should be understood that the definition of the friction coefficient is: the ratio of the friction force between two surfaces to the vertical force acting on one of the surfaces. Therefore, by adjusting the clamping pressure of the clamping mechanism 20 on the slide assembly 62, the pressure of the first adjustment block 622 (first ball structure 624) and the second adjustment block 623 (first ball structure 624) on the guide rail assembly 61 can be set to a quantitative pressure, and then the tension drive mechanism 30 drives the slide assembly 62 to move at a uniform speed relative to the guide rail assembly 61. At this time, the driving tension output by the tension drive mechanism 30 is equal to the friction resistance between the slide assembly 62 and the guide rail assembly 61, so that the friction coefficient between the slide assembly 62 and the guide rail assembly 61 under the current quantitative pressure of the clamping mechanism 20 on the slide assembly 62 can be calculated based on the friction resistance.

[0074] Furthermore, the conversion relationship between the pressure applied by the slide assembly 62 to the guide rail assembly 61 and the friction coefficient between the slide assembly 62 and the guide rail assembly 61 can be obtained based on multiple sets of quantitative pressures and the friction coefficient measured based on the quantitative pressures. In this way, in the subsequent application of the linear motor 6 to be tested, the slide assembly 62 in the linear motor 6 to be tested can be precisely controlled according to the above-mentioned conversion relationship to ensure the thrust performance and operation stability of the linear motor 6 to be tested.

[0075] In some embodiments, the tension driving mechanism 30 includes a first linear motor 31 and a transmission assembly 32:

[0076] Among them, the first linear motor 31 includes a stator guide rail 311 and a sliding table 312. The stator guide rail 311 is connected to the base 10 and forms a guide track extending in the same direction as the guide rail assembly 61. The sliding table 312 is adapted to the guide track and is connected to the clamping mechanism 20 through the transmission assembly 32. It can slide along the guide track relative to the stator guide rail 311 to apply pulling force to the clamping mechanism 20 through the transmission assembly 32.

[0077] Specifically, the guide track formed by the stator guide rail 311 extends in the same direction as the track formed by the guide rail assembly 61, and when the driving current is input to the first linear motor 31, the sliding table 312 is driven to slide along the guide track to apply a pulling force to the clamping mechanism 20 through the transmission assembly 32, thereby pulling the clamping mechanism 20 and the slide assembly 62 clamped by the clamping mechanism 20 to move relative to the guide rail assembly 61, and because the guide track formed by the stator guide rail 311 extends in the same direction as the track formed by the guide rail assembly 61, the linearity of the movement of the sliding table 312, the clamping mechanism 20, and the slide assembly 62 is ensured, ensuring that they will not deviate sideways during movement.

[0078] As an embodiment, the surface of the base 10 is also provided with an auxiliary guide rail 12 adapted to the sliding platform 312, for example, Figure 5 As shown in the figure, the stator guide rail 311 and the auxiliary guide rail 12 are both connected and fixed on the surface of the base 10, and the stator guide rail 311 and the auxiliary guide rail 12 are respectively located on the side of the first adjustment block 622 away from the guide rail assembly 61 and the side of the second adjustment block 623 away from the guide rail assembly 61, and the sliding table 312 forms a guiding fit with the stator guide rail 311 and the auxiliary guide rail 12 respectively, further ensuring the linearity of the movement of the sliding table 312, the clamping mechanism 20, and the slide assembly 62 to avoid displacement during sliding.

[0079] Furthermore, the sliding table 312 is also formed with a first guide groove 3121 that is adapted to form a guide with the stator guide rail 311 and a second guide groove 3122 that is adapted to form a guide with the auxiliary guide rail 12 to ensure the linearity and stability of the movement of the sliding table 312 relative to the stator guide rail 311.

[0080] In some embodiments, the transmission assembly 32 includes an elastic transmission member 321 , a first end of the elastic transmission member 321 is connected to the sliding platen 312 , and a second end is connected to the clamping mechanism 20 ;

[0081] The tension detection mechanism 40 is connected to the elastic transmission member 321 and is used to detect the tension on the elastic transmission member 321 to obtain tension detection data.

[0082] Specifically, the elastic transmission member 321 is connected between the sliding platen 312 and the clamping mechanism 20, and when the sliding platen 312 is pulled in a direction away from the clamping mechanism 20, the elastic transmission member 321 is elastically stretched and pulls the clamping mechanism 20 to slide in the direction of the clamping mechanism 20. The tension is equal everywhere on the elastic transmission member 321, and the tension detection mechanism 40 is connected to the elastic transmission member 321 to detect the tension on the elastic transmission member 321 and obtain tension detection data.

[0083] Exemplarily, the tension detection mechanism 40 is a tension and compression sensor connected to one end of the elastic transmission member 321 close to the sliding table 312 or one end close to the clamping mechanism 20 to detect the tension on the elastic transmission member 321 .

[0084] As an embodiment, the transmission assembly 32 further includes a transfer block 322 , and the first end of the elastic transmission member 321 is connected to the sliding platform 312 through the transfer block 322 .

[0085] In some embodiments, the tension driving mechanism 30 further includes a position adjustment component 33, and the position adjustment component 33 includes:

[0086] The adjusting guide rail 311 is connected to the sliding platform 312 and forms a position adjustment track extending along the first direction;

[0087] The adjusting slider 332 , the clamping mechanism 20 is connected to the adjusting slider 332 , and the adjusting slider 332 is movably connected to the adjusting guide rail 311 through a position adjustment track.

[0088] Specifically, the adjusting guide rail 311 can also be called a guide rail pair. The clamping mechanism 20 is connected to the sliding table 312 through the adjusting slider 332 and the adjusting guide rail 311. The adjusting slider 332 can move on the position adjustment rail along the first direction and maintain the connection with the adjusting guide rail 311. It should be understood that when the clamping mechanism 20 adjusts the clamping pressure on the slide assembly 62 in the first direction, the clamping mechanism 20 may deviate a certain amount relative to the sliding table 312 in the first direction. Based on this, an adjusting slider 332 that can adjust the position relative to the adjusting guide rail 311 in the first direction is provided, so that the clamping mechanism 20 can still maintain the linearity of movement when it deviates relative to the sliding table 312 in the first direction.

[0089] As an embodiment, the relative direction of the first adjustment block 622 and the second adjustment block 623 is perpendicular to the extension direction of the guide rail assembly 61, and the movable direction of the adjustment slider 332 relative to the adjustment guide rail 311 is perpendicular to the extension direction of the guide rail assembly 61, which has a better position adjustment effect.

[0090] As an embodiment, the first end of the elastic transmission member 321 is connected to the adjusting slider 332 through the adapter block 322 .

[0091] In some embodiments, the clamping mechanism 20 includes a first clamping member 21, a second clamping member 22, a clamping transmission assembly 3225, and a driving motor 23;

[0092] The first clamping member 21 and the second clamping member 22 are disposed on opposite sides of the test position 11, and the first clamping member 21 and the second clamping member 22 are movably connected via a clamping transmission assembly 3225;

[0093] The driving motor 23 is connected to the clamping transmission assembly 3225, and is used to drive at least one of the first clamping member 21 and the second clamping member 22 to move toward the other through the clamping transmission assembly 3225 to clamp the slide assembly 62 of the linear motor 6 to be tested, so that the first adjustment block 622 and the second adjustment block 623 apply clamping pressure to the guide rail assembly 61.

[0094] Specifically, the first clamping member 21 and the second clamping member 22 are arranged on opposite sides of the first direction of the test position 11 (a direction perpendicular to the extension direction of the guide rail assembly 61), that is, the clamping mechanism 20 is used to clamp the first adjustment block 622 and the second adjustment block 623 along the first direction through the first clamping member 21 and the second clamping member 22. More specifically, when the linear motor 6 to be tested is placed in the test position 11, the first clamping member 21 is located on the side of the first adjustment block 622 away from the guide rail assembly 61, and the second clamping member 22 is located on the side of the second adjustment block 623 away from the guide rail assembly 61. Thus, the first clamping member 21 and the second clamping member 22 can press or release the slide assembly 62 from both sides of the slide assembly 62 in the first direction, thereby adjusting the pressure applied by the first adjustment block 622 and the second adjustment block 623 to the guide rail assembly 61.

[0095] In some embodiments, the clamping transmission assembly 3225 includes a worm gear 25, a worm 26, and a transmission screw 27;

[0096] The first clamping member 21 is connected and fixed to the tension driving mechanism 30, and is formed with a rotation groove opposite to the second clamping member 22, the second clamping member 22 is formed with a first thread structure, the first end of the transmission screw 27 is rotationally connected to the rotation groove, the second end of the transmission screw 27 is formed with a second thread structure adapted to the first thread structure, and when the transmission screw 27 rotates relative to the rotation groove, the transmission screw 27 drives the second clamping member 22 to move toward or away from the first clamping member 21 through the first thread structure and the second thread structure;

[0097] The worm wheel 25 is sleeved on the transmission screw 27 and connected to the transmission screw 27. The worm 26 forms a transmission connection with the worm wheel 25. The output end of the drive motor 23 is connected to the worm 26 and is used to drive the transmission screw 27 to rotate relative to the rotating groove through the worm 26 and the worm wheel 25.

[0098] Specifically, through the setting of the transmission screw 27, when the transmission screw 27 rotates relative to the rotating groove, the transmission screw 27 drives the second clamping member 22 to move toward the first clamping member 21 or away from the first clamping member 21 through the first threaded structure and the second threaded structure, so that the first clamping member 21 and the second clamping member 22 can press or loosen the slide assembly 62 from both sides of the slide assembly 62 in the first direction, thereby adjusting the pressure applied by the first adjustment block 622 and the second adjustment block 623 to the guide rail assembly 61.

[0099] The output end of the driving motor 23 forms a transmission connection with the transmission screw 27 through the worm 26 and the worm wheel 25. When the driving motor 23 drives its output end to rotate, the worm 26 rotates accordingly, and the worm wheel 25 adapted to the worm 26 reverses the movement direction of the worm 26 to drive the transmission screw 27 to rotate relative to the rotating groove.

[0100] Exemplarily, the first clamping member 21 is a fixed platform connected and fixed to the tension driving mechanism 30 , and the second clamping member 22 is a movable platform movably connected to the first clamping member 21 through a worm 26 and a transmission screw 27 .

[0101] See also Figure 7 In some embodiments, the linear motor testing device 1 further includes a controller 50, which is connected to the clamping mechanism 20, the tension driving mechanism 30 and the tension detection mechanism 40, and is used to:

[0102] When the linear motor 6 to be tested is placed at the test position 11, the clamping mechanism 20 is controlled to clamp the slide assembly 62, and the clamping pressure of the clamping mechanism 20 on the slide assembly 62 is adjusted to the target pressure;

[0103] Control the tension driving mechanism 30 to drive the clamping mechanism 20 to clamp the slide assembly 62 to move at a uniform speed relative to the track assembly, and receive the tension detection data detected by the tension detection mechanism 40 during the uniform speed movement of the slide assembly 62;

[0104] The friction coefficient between the slide assembly 62 and the guide rail assembly 61 is determined based on the tension detection data.

[0105] Specifically, based on the definition of the friction coefficient, when the slide assembly 62 moves at a constant speed driven by the tension detection mechanism 40, the driving tension output by the tension driving mechanism 30 is equal to the friction resistance between the slide assembly 62 and the guide rail assembly 61. At this time, the friction coefficient between the slide assembly 62 and the guide rail assembly 61 under the current quantitative pressure of the clamping mechanism 20 on the slide assembly 62 can be calculated based on the friction resistance.

[0106] As an embodiment, a first ball structure 624 is provided on a side of the first adjustment block 622 close to the guide rail assembly 61, and a second ball structure 625 is provided on a side of the second adjustment block 623 close to the guide rail assembly 61. At this time, the surface pressure of the slide assembly 62 on the guide rail assembly 61 is specifically provided by the surface of the first ball structure 624 abutting against the guide rail assembly 61 and the surface of the second ball structure 625 abutting against the guide rail assembly 61. At this time, the friction coefficient between the slide assembly 62 and the guide rail assembly 61 is the friction coefficient between the first ball structure 624 and the guide rail assembly 61 / the friction coefficient between the second ball structure 625 and the guide rail assembly 61.

[0107] Specifically, the first adjustment block 622 and the guide rail assembly 61 are respectively formed with a rolling track adapted to the first ball structure 624 on one side close to the other, and the second adjustment block 623 and the guide rail assembly 61 are respectively formed with a rolling track adapted to the second ball structure 625 on one side close to the other, wherein the friction coefficient between the first ball structure 624 and the guide rail assembly 61 / the friction coefficient between the second ball structure 625 and the guide rail assembly 61 is, the contact angle between the first ball structure 624 and the first adjustment block 622, the contact angle between the first ball structure 624 and the guide rail assembly 61, the contact angle between the second ball structure 625 and the second adjustment block 623, and the contact angle between the second ball structure 625 and the guide rail assembly 61 are all α, and the clamping mechanism 20 outputs a magnitude of F to both sides of the slide assembly 62 respectively. H The pressure of the non-load-bearing area on the guide rail assembly 61 is f.

[0108] like Figure 2 As shown, the friction resistance F of the guide rail assembly 61 can be obtained by decomposing and synthesizing the force. f The expression is:

[0109] 2F n1 cosα=F1 / tanα.

[0110] Correspondingly, the expression of friction coefficient can be obtained as

[0111] Combination Figure 8 , further explaining the friction force in the non-load-bearing area: the specific structure of the first ball structure 624 / the second ball structure 625 can be referred to Figure 8 Taking the first ball structure 624 as an example, the friction force generated by the contact between the first ball structure 624 and the slide assembly 62 is called the bearing area friction force, that is, 4μF ni , and the friction force generated by the non-contact between the first ball structure 624 and the slide assembly 62 is called the non-load-bearing area friction force, which is the sum of the rolling friction and sliding friction generated by the contact between the balls in the first ball structure 624 and the inner wall of the returner, and the non-load-bearing area friction force is a constant value, which can be represented by f. The second ball structure 625 is similar, and will not be described here.

[0112] Furthermore, the clamping mechanism 20 can be controlled to output a pressure of Fh=0 to both sides of the slide assembly 62, and the tension driving mechanism 30 can be controlled to drive the clamping mechanism 20 to clamp the slide assembly 62 to move at a uniform speed relative to the track assembly, so that the friction force in the non-load-bearing area is equal to the driving tension provided by the tension driving mechanism 30, thereby calculating the friction force in the non-load-bearing area.

[0113] In some embodiments, the clamping mechanism 20 includes a first clamping member 21, a second clamping member 22, a clamping transmission assembly 3225, a driving motor 23, and a pressure sensor 24;

[0114] The first clamping member 21 and the second clamping member 22 are disposed on opposite sides of the test position 11 and are movably connected via the clamping transmission assembly 3225;

[0115] The driving motor 23 is connected to the controller 50 and is used to drive the first clamping member 21 and the second clamping member 22 to clamp the slide assembly 62 located at the test position 11 through the clamping transmission assembly 3225;

[0116] The pressure sensor 24 is connected to the controller 50 and is disposed on at least one of the first clamping member 21 and the second clamping member 22, and is used to detect the pressure feedback of the first clamping member 21 and the second clamping member 22 on the slide assembly 62;

[0117] The controller 50 is also used to receive pressure feedback detected by the pressure sensor 24, and control the drive motor 23 to adjust the clamping pressure of the first clamping member 21 and the second clamping member 22 on the slide assembly 62 to a target pressure according to the pressure feedback.

[0118] Specifically, the driving motor 23 drives the first clamping member 21 and the second clamping member 22 to output an adjustable pressure to the slide assembly 62. When the pressure feedback detected by the pressure sensor 24 is greater than the target, the output of the driving motor 23 is reduced. When the pressure feedback is smaller, the output of the driving motor 23 is increased, thereby ensuring the precise pressure output of the first clamping member 21 and the second clamping member 22 to the slide assembly 62.

[0119] In some embodiments, the controller 50 is further configured to:

[0120] When the linear motor 6 to be tested is placed at the test position 11, the clamping mechanism 20 is controlled to clamp the slide assembly 62, and the clamping pressure of the clamping mechanism 20 on the slide assembly 62 is adjusted to the first target pressure, the tension driving mechanism 30 is controlled to drive the clamping mechanism 20 to clamp the slide assembly 62 to perform a first uniform motion relative to the track assembly, and the tension detection mechanism 40 receives the first tension detection data detected during the first uniform motion of the slide assembly 62;

[0121] When the slide assembly 62 and the guide rail assembly 61 are reset, the clamping mechanism 20 is controlled to clamp the slide assembly 62, and the clamping pressure of the clamping mechanism 20 on the slide assembly 62 is adjusted to the second target pressure, the tension driving mechanism 30 is controlled to drive the clamping mechanism 20 to clamp the slide assembly 62 to perform a second uniform motion relative to the track assembly, and the second tension detection data detected by the tension detection mechanism 40 during the second uniform motion process of the slide assembly 62 is received;

[0122] The conversion relationship between the clamping pressure of the clamping mechanism 20 on the slide assembly 62 and the friction coefficient between the slide assembly 62 and the guide rail assembly 61 is determined according to the first target pressure, the second target pressure, the first tension detection data and the second tension detection data.

[0123] It should be noted that the resetting of the slide assembly 62 and the guide rail assembly 61 means that the position of the slide assembly 62 relative to the guide rail assembly 61 returns to the initial position. Specifically, the friction coefficient between the slide assembly 62 and the guide rail assembly 61 under the first target pressure can be obtained according to the first target pressure and the first tension detection data. Similarly, the friction coefficient between the slide assembly 62 and the guide rail assembly 61 under the second target pressure can be obtained according to the second target pressure and the second tension detection data. The specific calculation method of the friction coefficient can refer to the above. After that, the conversion relationship between the clamping pressure of the clamping mechanism 20 on the slide assembly 62 and the friction coefficient between the slide assembly 62 and the guide rail assembly 61 can be obtained according to at least the above two sets of quantitative pressures and the corresponding friction coefficients.

[0124] Furthermore, after receiving the second tension detection data, the slide assembly 62 and the guide rail assembly 61 can be reset, the clamping mechanism 20 can be controlled to adjust the clamping pressure of the slide assembly 62 to more groups of quantitative pressures, and the corresponding tension detection data can be detected during the uniform motion of the slide assembly 62 under the quantitative pressure, thereby making the simulation of the conversion relationship between the clamping pressure and the friction coefficient more accurate.

[0125] Specifically, the conversion relationship between the pressure applied by the slide assembly 62 to the guide rail assembly 61 and the friction coefficient between the slide assembly 62 and the guide rail assembly 61 is obtained through at least two sets of quantitative pressures and the friction coefficient measured according to the quantitative pressures. This plays a significant role in the subsequent application process of the linear motor 6 to be tested. Based on the conversion relationship, the slide assembly 62 in the linear motor 6 to be tested can be precisely controlled in motion to ensure the thrust performance and operation stability of the linear motor 6 to be tested.

[0126] Exemplarily, the clamping mechanism 20 is controlled to load the slide assembly 62 with six levels of quantitative pressure, namely 2.5%, 5%, 7.5%, 10%, 12.5% ​​and 15% of its rated dynamic load, respectively. Then, the slide assembly 62 of the linear motor 6 to be tested is driven to move at a uniform speed relative to the guide rail assembly 61 and the corresponding tension detection data is measured, so as to obtain the friction coefficient corresponding to each group of quantitative pressure according to the tension detection data and the quantitative pressure, thereby simulating the conversion relationship between the clamping pressure and the friction coefficient.

[0127] See also Fig. 9 , Fig. 9 A schematic flowchart of the steps of the linear motor testing method provided in an embodiment of the present application.

[0128] like Fig. 9 As shown, the embodiment of the present application further provides a linear motor testing method, which is applied to any linear motor testing device 1 provided in the present application, and the method includes steps S1 to S3:

[0129] Step S1: When the linear motor 6 to be tested is placed at the test position 11, the clamping mechanism 20 is controlled to clamp the slide assembly 62, and the clamping pressure of the clamping mechanism 20 on the slide assembly 62 is adjusted to a target pressure;

[0130] Step S2: Control the tension driving mechanism 30 to drive the clamping mechanism 20 to clamp the slide assembly 62 to move at a uniform speed relative to the track assembly, and receive the tension detection data detected by the tension detection mechanism 40 during the uniform motion process of the slide assembly 62;

[0131] Step S3: Determine the friction coefficient between the slide assembly 62 and the guide rail assembly 61 according to the tension detection data.

[0132] Specifically, when the linear motor 6 to be tested is placed in the test position 11, the clamping mechanism 20 is controlled to clamp the slide assembly 62, and the clamping pressure of the clamping mechanism 20 on the slide assembly 62 is adjusted to the target pressure; the tension driving mechanism 30 is controlled to drive the clamping mechanism 20 to clamp the slide assembly 62 to move at a uniform speed relative to the track assembly, and the tension detection data detected by the tension detection mechanism 40 during the uniform motion process of the slide assembly 62 is received; the friction coefficient between the slide assembly 62 and the guide rail assembly 61 is determined according to the tension detection data.

[0133] It should be noted that the specific implementation of the test method can refer to the aforementioned specific description of the linear motor test device 1 provided in the present application, which will not be repeated here.

[0134] In summary, the embodiment of the present application provides a linear motor testing device 1 and a linear motor testing method, the linear motor testing device 1 includes: a base 10, the base 10 is provided with a test position 11 for placing the linear motor 6 to be tested, wherein the linear motor 6 to be tested includes a guide rail assembly 61 that can be installed on the test position 11 and a slide assembly 62 that can move relative to the guide rail assembly 61, the slide assembly 62 at least includes a slide base 621 and a first adjustment block 622 and a second adjustment block 623 connected to the slide base 621, the first adjustment block 622 and the second adjustment block 623 are arranged on opposite sides of the guide rail assembly 61, the distance between the first adjustment block 622 and the second adjustment block 623 is adjustable, and the first adjustment block 622 is movably connected to the guide rail assembly 61, and the second adjustment block 623 is movably connected to the guide rail assembly 61; a clamping mechanism 20, the clamping mechanism 20 corresponds to The test position 11 is provided for clamping the slide assembly 62 when the linear motor 6 to be tested is placed at the test position 11, so that the first adjustment block 622 and the second adjustment block 623 apply pressure to the guide rail assembly 61, and the clamping pressure of the clamping mechanism 20 on the slide assembly 62 is adjustable; a tension driving mechanism 30, the tension driving mechanism 30 connects the base 10 and the clamping mechanism 20, and is used to apply tension to the clamping mechanism 20 when the clamping mechanism 20 clamps the guide rail assembly 61, so as to drive the clamping mechanism 20 to drive the slide assembly 62 to move relative to the guide rail assembly 61 along the extension direction of the guide rail assembly 61; a tension detection mechanism 40, the tension detection mechanism 40 is provided corresponding to the tension driving mechanism 30, and is used to detect the tension applied by the tension driving mechanism 30 to the slide assembly 62 to obtain tension detection data, so as to obtain the friction coefficient between the slide assembly 62 and the guide rail assembly 61 according to the tension detection data. The linear motor testing device 1 provided in the embodiment of the present application adjusts the clamping pressure of the clamping mechanism 20 on the slide assembly 62 to adjust the clamping pressure applied by the first adjustment block 622 and the second adjustment block 623 to the guide rail assembly 61, and drives the clamping mechanism 20 to clamp the slide assembly 62 and move it relative to the guide rail assembly 61 along the extension direction of the guide rail assembly 61. Therefore, when the slide assembly 62 moves at a uniform speed relative to the guide rail assembly 61, the friction resistance between the slide assembly 62 and the guide rail assembly 61 can be calculated according to the tension detection data, and then the friction coefficient between the slide assembly 62 and the guide rail assembly 61 under the current clamping pressure of the clamping mechanism 20 on the slide assembly 62 can be calculated according to the friction resistance. Then, in the subsequent application of the linear motor 6 to be tested, the motion of the slide assembly 62 in the linear motor 6 to be tested can be accurately controlled according to the conversion relationship between the clamping pressure and the friction coefficient, so as to ensure the thrust performance and operation stability of the linear motor 6 to be tested.The above description is only a specific embodiment of the present application, but the protection scope of the present application is not limited thereto. Any technician familiar with the technical field can easily think of various equivalent modifications or substitutions within the technical scope disclosed in the present application, and these modifications or substitutions should be included in the protection scope of the present application. The protection scope of the present application should be based on the protection scope of the claims.

[0135] It should be understood that the terms used in this specification of the present application are only for the purpose of describing specific embodiments and are not intended to limit the present application. Unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or it can be a connection between the two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances. As used in the specification of this application and the appended claims, the singular forms of "one", "an" and "the" are intended to include plural forms unless the context clearly indicates otherwise. It should also be understood that the term "and / or" used in the specification of this application and the appended claims refers to any combination of one or more of the associated listed items and all possible combinations, and includes these combinations. As used herein, the terms "comprises," "comprising," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or system that includes a list of elements includes not only those elements but also other elements not expressly listed, or also includes elements that are inherent to such process, method, article, or system.

Claims

1. A linear motor testing device, characterized in that: include: A base, wherein the base is provided with a test position for placing a linear motor to be tested, wherein the linear motor to be tested comprises a guide rail assembly that can be installed at the test position and a slide assembly that can move relative to the guide rail assembly, the slide assembly at least comprises a slide base and a first adjustment block and a second adjustment block connected to the slide base, the first adjustment block and the second adjustment block are arranged on opposite sides of the guide rail assembly, the distance between the first adjustment block and the second adjustment block is adjustable, and the first adjustment block is movably connected to the guide rail assembly, and the second adjustment block is movably connected to the guide rail assembly; A clamping mechanism, the clamping mechanism is arranged corresponding to the test position, and is used to clamp the slide assembly when the linear motor to be tested is placed in the test position, so that the first adjustment block and the second adjustment block apply pressure to the guide rail assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjustable; A tension driving mechanism, the tension driving mechanism connecting the base and the clamping mechanism, and used to apply tension to the clamping mechanism when the clamping mechanism clamps the guide rail assembly, so as to drive the clamping mechanism to drive the slide assembly to move relative to the guide rail assembly along the extension direction of the guide rail assembly; A tension detection mechanism is provided corresponding to the tension driving mechanism and is used to detect the tension applied by the tension driving mechanism to the slide assembly to obtain tension detection data, so as to obtain the friction coefficient between the slide assembly and the guide rail assembly according to the tension detection data.

2. The linear motor testing device according to claim 1, characterized in that: The tension driving mechanism comprises a first linear motor and a transmission assembly: Among them, the first linear motor includes a stator guide rail and a sliding table, the stator guide rail is connected to the base, and forms a guide track extending in the same direction as the guide rail assembly, the sliding table is adapted to the guide track, and is connected to the clamping mechanism through the transmission assembly, and can slide along the guide track relative to the stator guide rail to apply pulling force to the clamping mechanism through the transmission assembly.

3. The linear motor testing device according to claim 2, characterized in that: The transmission assembly comprises an elastic transmission member, a first end of the elastic transmission member is connected to the sliding platform, and a second end of the elastic transmission member is connected to the clamping mechanism; The tension detection mechanism is connected to the elastic transmission member and is used to detect the tension on the elastic transmission member to obtain the tension detection data.

4. The linear motor testing device according to claim 2, characterized in that: The tension driving mechanism further includes a position adjustment component, and the position adjustment component includes: an adjustment rail connected to the sliding platform and forming a position adjustment track extending along a first direction, wherein the first direction is a direction in which the first adjustment block and the second adjustment block are arranged relative to each other; The adjusting slider is connected to the clamping mechanism, and the adjusting slider is movably connected to the adjusting guide rail through the position adjustment track.

5. The linear motor testing device according to claim 1, characterized in that: The clamping mechanism comprises a first clamping member, a second clamping member, a clamping transmission assembly and a driving motor; Wherein, the first clamping member and the second clamping member are arranged on opposite sides of the test position, and the first clamping member and the second clamping member are movably connected through the clamping transmission assembly; The driving motor is connected to the clamping transmission assembly and is used to drive at least one of the first clamping member and the second clamping member to move toward the other through the clamping transmission assembly to clamp the slide assembly of the linear motor to be tested, so that the first adjustment block and the second adjustment block apply clamping pressure to the guide rail assembly.

6. The linear motor testing device according to claim 5, characterized in that: The clamping transmission assembly includes a worm wheel, a worm and a transmission screw; The first clamping member is connected and fixed to the tension driving mechanism, and is formed with a rotation groove opposite to the second clamping member, the second clamping member is formed with a first thread structure, the first end of the transmission screw is rotationally connected to the rotation groove, the second end of the transmission screw is formed with a second thread structure adapted to the first thread structure, and when the transmission screw rotates relative to the rotation groove, the transmission screw drives the second clamping member to move toward or away from the first clamping member through the first thread structure and the second thread structure; The worm wheel is sleeved on the transmission screw and connected to the transmission screw, the worm and the worm wheel form a transmission connection, the output end of the drive motor is connected to the worm, and is used to drive the transmission screw to rotate relative to the rotating groove through the worm and the worm wheel.

7. The linear motor testing device according to any one of claims 1 to 6, characterized in that: The linear motor testing device further includes a controller, which is connected to the clamping mechanism, the tension driving mechanism and the tension detection mechanism and is used to: When the linear motor to be tested is placed in the test position, controlling the clamping mechanism to clamp the slide assembly, and adjusting the clamping pressure of the clamping mechanism on the slide assembly to a target pressure; Controlling the tension driving mechanism to drive the clamping mechanism to clamp the slide assembly to move at a uniform speed relative to the track assembly, and receiving the tension detection data detected by the tension detection mechanism during the uniform speed movement of the slide assembly; The friction coefficient between the slide assembly and the guide rail assembly is determined according to the tension detection data.

8. The linear motor testing device according to claim 7, characterized in that: The clamping mechanism includes a first clamping member, a second clamping member, a clamping transmission assembly, a driving motor and a pressure sensor; Wherein, the first clamping member and the second clamping member are arranged on opposite sides of the test position and are movably connected through the clamping transmission assembly; The driving motor is connected to the controller and is used to drive the first clamping member and the second clamping member to clamp the slide assembly located at the test position through the clamping transmission assembly; The pressure sensor is connected to the controller and is disposed on at least one of the first clamping member and the second clamping member, and is used to detect pressure feedback of the first clamping member and the second clamping member on the slide assembly; The controller is also used to receive the pressure feedback detected by the pressure sensor, and control the drive motor to adjust the clamping pressure of the first clamping member and the second clamping member on the slide assembly to a target pressure according to the pressure feedback.

9. The linear motor testing device according to claim 7, characterized in that: The controller is also used for: When the linear motor to be tested is placed in the test position, the clamping mechanism is controlled to clamp the slide assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjusted to a first target pressure, the tension driving mechanism is controlled to drive the clamping mechanism to clamp the slide assembly to perform a first uniform motion relative to the track assembly, and first tension detection data detected by the tension detection mechanism during the first uniform motion process of the slide assembly is received; When the slide assembly and the guide rail assembly are reset, the clamping mechanism is controlled to clamp the slide assembly, and the clamping pressure of the clamping mechanism on the slide assembly is adjusted to a second target pressure, the tension driving mechanism is controlled to drive the clamping mechanism to clamp the slide assembly to perform a second uniform motion relative to the track assembly, and second tension detection data detected by the tension detection mechanism during the second uniform motion of the slide assembly is received; The conversion relationship between the clamping pressure of the clamping mechanism on the slide assembly and the friction coefficient between the slide assembly and the guide rail assembly is determined according to the first target pressure, the second target pressure, the first tension detection data and the second tension detection data.

10. A linear motor testing method, characterized in that: Applied to the linear motor testing device according to any one of claims 1 to 9, the method comprises: When the linear motor to be tested is placed in the test position, controlling the clamping mechanism to clamp the slide assembly, and adjusting the clamping pressure of the clamping mechanism on the slide assembly to a target pressure; Controlling the tension driving mechanism to drive the clamping mechanism to clamp the slide assembly to move at a uniform speed relative to the track assembly, and receiving the tension detection data detected by the tension detection mechanism during the uniform speed movement of the slide assembly; The friction coefficient between the slide assembly and the guide rail assembly is determined according to the tension detection data.

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