A performance testing device for linear guide rails

Abstract

This application belongs to the field of performance testing technology and relates to a performance testing device for linear guides. The linear guide performance testing device includes a frame and a loading mechanism. The frame is equipped with a linear guide, a test guide, a load component, a traction rope, and a drive assembly. The linear guide includes a guide body and a test slider. The load component is slidably connected to the guide body via the test slider. The drive assembly drives the movement of the load component. A test structure is slidably connected to the test guide and connected to the load component. The load component has a main pulley and a secondary pulley connected to it. The loading mechanism is located at one end of the guide body along its length. One end of the traction rope is connected to the test structure, and the other end passes downwards past the main and secondary pulleys and is connected to the loading mechanism. This linear guide performance testing device can simulate dynamic changes in load and speed during equipment operation, making the performance testing of the linear guide more closely resemble real-world working conditions.

Description

Technical Field

[0001] This application belongs to the field of performance testing technology and relates to a performance testing device for linear guide rails. Background Technology

[0002] With the increasing speed and heavy load of equipment operation, the damage problem of linear guides is becoming increasingly serious. Under harsh and complex service conditions, linear guides are more prone to surface damage and defects when in dynamic contact with moving equipment. If these damages and defects are not addressed in a timely manner, they will increase the operating noise of the equipment. In particular, these damages and defects will continue to expand over time, eventually leading to partial or complete failure of the linear guide, or even causing equipment derailment. Therefore, performance testing of linear guides is necessary to assess their service condition and lifespan.

[0003] In related technologies, constant load loading is often used to test the performance of linear guides. For example, a fixed weight or hydraulic device is applied to the slider of the linear guide to simulate the load, and then the load is moved by a drive device to test the load-bearing capacity and wear resistance of the linear guide. However, such methods cannot realistically simulate the dynamic changes in load and speed during equipment operation, resulting in significant deviations between the test results and actual working conditions. Summary of the Invention

[0004] To address the shortcomings or improvement needs of existing technologies, this application provides a performance testing device for linear guides. It aims to solve the problem that traditional testing methods struggle to simulate dynamic load and speed changes during equipment operation.

[0005] This application provides a performance testing device for linear guides, specifically including a frame and a loading mechanism. The frame is equipped with a linear guide, a test guide, a load element, a traction rope, and a drive assembly, wherein: The linear guide rail includes a guide rail body and a slider to be tested. The guide rail body is fixedly connected to the frame. The load member is disposed on the side of the guide rail body. The load member is slidably connected to the guide rail body through the slider to be tested. The driving component is used to drive the load member to reciprocate along the length direction of the guide rail body at an adjustable speed. The accompanying test rail is positioned above the rail body and the load component. A slidable accompanying test structure is connected to the accompanying test rail. The accompanying test structure is connected to the load component, and the load component can drive the accompanying test structure to move synchronously. The load-bearing component is connected to a main pulley and a secondary pulley. The axis of the main pulley is parallel to the length direction of the guide rail body, and the axis of the secondary pulley is perpendicular to the length direction of the guide rail body. The loading mechanism is located at one end of the guide rail body along its length. One end of the traction rope is connected to the supporting structure, and the other end passes downwards around the main pulley and the secondary pulley before connecting to the loading mechanism. The loading mechanism can apply an adjustable traction force to the traction rope.

[0006] As a further preferred embodiment, the frame is provided with a support structure, and the test guide rail is connected to the frame in an adjustable position via the support structure.

[0007] As a further preferred embodiment, the support structure includes a connecting bracket and a crossbar, wherein: Two connecting brackets are provided, and the two connecting brackets are horizontally adjustable and connected to the frame; The two ends of the crossbar correspond one-to-one with the two connecting brackets, and both ends of the crossbar can be height-adjusted and connected to the corresponding connecting brackets. The accompanying guide rail is connected to the crossbar.

[0008] As a further preferred embodiment, the performance testing device for linear guides also includes a follower, one end of which is connected to the test structure and the other end of which is connected to the load component. The test structure moves synchronously with the load component through the follower.

[0009] As a further preferred embodiment, the follower is a freely extendable connecting rod, one end of which is rotatably connected to the test structure and the other end is rotatably connected to the load component, and the rotation axes of both ends are parallel to the length direction of the guide rail body.

[0010] As a further preferred embodiment, the follower, the rope segment of the traction rope located between the auxiliary structure and the main pulley, and the rope segment of the traction rope located between the main pulley and the secondary pulley are all perpendicular to the guide rail body.

[0011] As a further preferred embodiment, the drive assembly includes a drive shaft, a lead screw, a transmission structure, and a drive motor, wherein: The drive shaft is rotatably connected to the frame, the lead screw is threadedly connected to the load member, and the drive shaft and the lead screw are connected by the transmission structure; the drive motor is fixed to the frame and is used to drive the drive shaft to rotate.

[0012] As a further preferred embodiment, the performance testing device for the linear guide rail also includes self-aligning roller bearings, with both ends of the drive shaft rotatably connected to the frame via the self-aligning roller bearings.

[0013] As a further preferred embodiment, the guide rail body is horizontally placed on the side and connected to the frame.

[0014] As a further preferred embodiment, the center of gravity of the load member is located at the end of the load member closer to the guide rail body.

[0015] In summary, compared with the prior art, the technical solutions conceived in this application have the following main technical advantages: This application's performance testing device overcomes the limitations of traditional constant loading, achieving controllable coupling of dynamic load and motion speed. In particular, this application uses a traction rope as the force transmission medium, which, combined with the synergistic effect of the test guide rail and the follower, ensures that the load direction is always perpendicular to the motion surface of the linear guide rail, significantly reducing lateral interference. Furthermore, by adjusting the installation position of the test guide rail, this application can adjust the winding angle of the traction rope, thereby precisely controlling the magnitude of the load component in the normal direction of the linear guide rail. This simulates the actual stress state of the linear guide rail under different working conditions, making the test more closely resemble real-world application scenarios. With this design, this performance testing device is particularly suitable for simulating the wear and tear of the guide rail body and slider under different heavy loads and relative motion at different speeds under extreme working conditions. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of a performance testing device for linear guides provided in an embodiment of this application; Figure 2 This is a partial structural schematic diagram of the performance testing device provided in the embodiments of this application; Figure 3 This is a side view of the performance testing apparatus provided in the embodiments of this application; Figure 4 This is a simulation diagram of the force on the traction rope provided in the embodiments of this application.

[0017] In all the accompanying drawings, the same reference numerals are used to denote the same elements or structures, wherein: 1. Frame; 2. Loading mechanism; 3. Test guide rail; 4. Loading component; 5. Traction rope; 6. Guide rail body; 7. Sliding block under test; 8. Test structure; 9. Main pulley; 10. Secondary pulley; 11. Connecting bracket; 12. Crossbar; 13. Follower; 14. Drive shaft; 15. Lead screw; 16. Transmission structure; 17. Self-aligning roller bearing. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the scope of this application.

[0019] The following is in conjunction with the appendix Figures 1-4 This application will be described in further detail.

[0020] This application discloses a performance testing device for linear guides. (Refer to...) Figures 1-3 As shown, the performance testing device for the linear guide rail includes a frame 1 and a loading mechanism 2. The frame 1 is equipped with a linear guide rail, a test rail 3, a load element 4, a traction rope 5, and a drive assembly. The linear guide rail includes a guide rail body 6 and a test slider 7. The guide rail body 6 is fixedly connected to the frame 1. The load element 4 is located beside the guide rail body 6 and is slidably connected to the guide rail body 6 via the test slider 7. The drive assembly drives the load element 4 to reciprocate along the length of the guide rail body 6 at an adjustable speed. The test rail 3 is located above the guide rail body 6 and the load element 4. A test structure 8 is slidably connected to the test rail 3 via a slider. The test structure 8 is connected to the load element 4, and the load element 4 can drive the test structure 8 to move synchronously. The linear guide rail is equipped with a load-bearing component 4, which is connected to a main pulley 9 and a secondary pulley 10. The axis of the main pulley 9 is parallel to the length direction of the guide rail body 6, and the axis of the secondary pulley 10 is perpendicular to the length direction of the guide rail body 6. A loading mechanism 2 is located at one end of the guide rail body 6 along its length. One end of the traction rope 5 is connected to the test structure 8, and the other end passes downwards around the main pulley 9 and the secondary pulley 10 before connecting to the loading mechanism 2. The loading mechanism 2 can apply an adjustable traction force to the traction rope 5, which can be converted into a load borne by the tested slider 7. Based on the loading mechanism 2 and the drive assembly, the load and speed can be adjusted during performance testing, enabling the linear guide rail performance testing device to test the wear of the guide rail body 6 and the tested slider 7 when they move relative to each other at different speeds under different loads, thus achieving high-fidelity measurement of the linear guide rail.

[0021] Furthermore, such as Figure 3 As shown, in some embodiments, the guide rail body 6 is horizontally placed on the frame 1, with its slide rail surface located on one side of the guide rail body 6. The load member 4 is located on the side of the guide rail body 6 where the slide rail surface is located, and the load member 4 is assembled on the guide rail body 6 via the tested slider 7. The auxiliary guide rail 3 is mounted above the guide rail body 6 and the load member 4. The auxiliary guide rail 3 includes an auxiliary rail and an auxiliary slider. The length direction of the auxiliary rail is parallel to the length direction of the guide rail body 6. The auxiliary guide rail 3 is slidably connected to the auxiliary rail, and the auxiliary slider is connected to the load member 4, so that the load member 4 is slidably connected to the auxiliary rail via the auxiliary slider. In the design of this application, the linear guide rail is preferably a linear heavy-duty guide rail.

[0022] Furthermore, such as Figure 1 and Figure 2As shown, in some embodiments, the drive assembly includes a drive shaft 14, a lead screw 15, a transmission structure 16, and a drive motor (not shown in the figure). The length direction of the drive shaft 14 is aligned with the length direction of the guide rail body 6, and they are parallel to each other. Both ends of the drive shaft 14 are rotatably mounted on the frame 1 via a pair of bearings. The lead screw 15 is parallel to the drive shaft 14 and is preferably positioned below it. Both ends of the lead screw 15 are rotatably connected to the frame 1 via another pair of bearings, and the lead screw 15 is threadedly connected to the load member 4 (preferably at the end of the load member 4 furthest from the guide rail body 6). The lead screw 15 and the drive shaft 14 are connected via the transmission structure 16. The drive motor is fixed to the frame 1, and its output shaft is connected to the drive shaft 14 via a coupling. The drive motor drives the drive shaft 14 to rotate, thereby causing the load member 4 to reciprocate linearly along the length direction of the guide rail body 6 via the lead screw 15 and the transmission structure 16. The speed of the load member 4 can be adjusted by regulating the output speed of the drive motor.

[0023] The transmission structure 16 includes, but is not limited to, gear transmission, belt transmission, and chain transmission. For example, in some embodiments, the transmission structure 16 is a gear transmission, which includes a driving gear fixed on the transmission shaft and a driven gear fixed on the lead screw. The driving gear and the driven gear mesh with each other to ensure that the transmission ratio is precisely controllable. Preferably, the number of teeth of the driving gear is greater than that of the driven gear to achieve a speed reduction and torque increase effect, thereby providing a larger driving torque under low-speed conditions and ensuring that the load component 4 can still operate smoothly under high load conditions.

[0024] It is understood that in some other embodiments, the drive assembly may also use linear power components such as linear motors and hydraulic cylinders to directly drive the load component 4 to move, thereby eliminating the intermediate transmission link.

[0025] Furthermore, such as Figure 1 As shown, in some embodiments, the performance testing device for the linear guide rail further includes a follower 13. One end of the follower 13 is connected to the test structure 8, and the other end is connected to the load member 4. The test structure 8 drives the load member 4 to move synchronously through the follower 13. The main design purpose of the follower 13 is to ensure that when the drive assembly drives the load member 4 to move along the guide rail body 6, the load member 4 drives the test structure 8 to move synchronously through the follower 13, thus ensuring stable tension distribution and constant wrap angle in each segment of the traction rope 5.

[0026] The connecting parts include, but are not limited to, structures such as clamps and connecting seats; when the connecting parts are selected as clamps, the upper end of the clamp can be detachably clamped to the test slider, and the lower end of the clamp is connected to the traction rope 5 and the load member 4 respectively.

[0027] Furthermore, in some embodiments, a support structure is provided on the frame 1, and the test guide rail 3 is positionally adjustable on the frame 1 through the support structure. Under this design, by changing the spatial position of the test guide rail 3, the wrap angle between the traction rope 5 and the main pulley 9 can be adjusted (i.e., the rope segment angle of the traction rope 5 between the test structure 8 and the main pulley 9 can be adjusted), thereby precisely controlling the load component applied by the traction rope 5 to the main pulley 9, making the force between the tested slider 7 and the guide rail body 6 adjustable.

[0028] As a preferred option, such as Figure 1 As shown, in some embodiments, the support structure includes connecting brackets 11 and crossbars 12. Two connecting brackets 11 are provided, arranged on the same side of the load member 4, and are horizontally adjustable and connected to the frame 1. The two ends of the crossbar 12 correspond one-to-one with the two connecting brackets 11, and both ends of the crossbar 12 are height-adjustable and connected to the corresponding connecting brackets 11. The test rail 3 is connected to the crossbar 12.

[0029] Preferably, the two connecting brackets 11 are detachably connected to the frame 1 by bolts. Specifically, the frame 1 has a group of connecting holes corresponding to the position of each connecting bracket 11, and each group of connecting holes includes multiple threaded holes. In a group of connecting holes, the multiple threaded holes are arranged at intervals on the frame 1 with the width direction of the guide rail body 6 as the direction of arrangement, so that the connecting bracket 11 can be selectively fixed to the threaded holes at different positions by bolts, thereby realizing the position adjustment of the test guide rail 3 in the horizontal plane.

[0030] In a further preferred embodiment, the crossbar 12 is placed horizontally between the two connecting brackets 11, and both ends of the crossbar 12 are detachably connected to the two connecting brackets 11 by bolts. The connecting brackets 11 have multiple threaded holes spaced apart along the height direction, allowing the height of the crossbar 12 to be adjusted by bolts, thereby achieving height adjustment of the test guide rail 3 and ultimately adjusting the wrap angle of the traction rope 5.

[0031] It is understandable that in some other embodiments, the support structure may also employ high-load structural components such as hydraulic cylinders to achieve automatic lifting and translation of the test guide rail 3. However, it should be noted that regardless of the adjustment method, it is necessary to ensure that the length direction of the test guide rail 3 remains parallel to the guide rail body 6 to avoid lateral displacement or abnormal wear of the traction rope 5 during operation.

[0032] Furthermore, in some embodiments, when the test guide rail 3 is positionally adjustable on the frame 1 via a support structure, the support member is configured as a freely retractable connecting rod.

[0033] Preferably, the connecting rod is perpendicular to both the test guide rail 3 and the linear guide rail. One end of the connecting rod is connected to the test structure 8, and the other end is rotatably connected to the load member 4. At the same time, the rotation axes of both ends are parallel to the length direction of the guide rail body 6. This allows the follower 13 to automatically adapt to the length change and adjust its posture when the test guide rail 3 is adjusted, so that the load member 4 can still stably drive the test structure 8 to move synchronously through the follower 13.

[0034] It is understood that the freely retractable connecting rod includes, but is not limited to, using a piston rod; for example, the connecting rod includes a sleeve and a piston rod body slidably disposed in the sleeve, the end of the sleeve away from the piston rod body is rotatably connected to the load member 4, and the end of the piston rod body away from the sleeve is rotatably connected to the auxiliary structure 8, and the rotation axes of both are parallel to the length direction of the guide rail body 6.

[0035] Furthermore, in some preferred embodiments, the follower 13, the rope segment of the traction rope 5 located between the auxiliary structure 8 and the main pulley 9, and the rope segment of the traction rope 5 located between the main pulley 9 and the secondary pulley 10 are all perpendicular to the length direction of the guide rail body 6.

[0036] In some preferred embodiments, such as Figure 2 As shown, the end of the follower 13 connected to the load member 4 is closer to the lead screw 15 than the end of the follower 13 connected to the test structure 8. As a result, when the load member 4 moves along the axial direction of the lead screw 15, the follower 13 naturally forms an inclined posture, so that the rope segment of the traction rope 5 located between the test structure 8 and the main pulley 9 and the follower 13 are set at an angle, making the follower effect more stable.

[0037] Preferably, in some embodiments, multiple guide rail bodies 6 are provided, and multiple guide rail bodies 6 are spaced apart on the frame 1 along the height direction. Multiple guide rail bodies 6 are respectively connected to the load member 4 on the same side through the slider to be tested, so as to form a multi-layer test mode. Similarly, multiple auxiliary test guide rails 3 can also be provided, and multiple auxiliary test guide rails 3 are arranged in parallel, and multiple auxiliary test guide rails 3 are simultaneously connected to the same auxiliary test structure 8, so as to improve the redundancy and reliability of the test device.

[0038] As a preferred option, such as Figure 2 As shown, in some embodiments, the load member 4 is preferably a block structure, with a groove at the end of the load member 4 away from the guide rail body 6, which can be used to install the secondary pulley 10. Preferably, the center of gravity of the load member 4 is located at the end of the load member 4 closer to the guide rail body 6. Preferably, the end of the load member 4 with the groove is provided with a through hole, and one end of the traction rope 5 passes around the secondary pulley 10 and through the through hole, and then connects to the loading mechanism 2.

[0039] Preferably, both the main pulley 9 and the secondary pulley 10 are rotatably connected to the load member 4. The axis (i.e., the central axis) of the main pulley 9 is located at the end of the load member 4 near the guide rail body 6. The axis of the main pulley 9 is parallel to the length direction of the guide rail body 6, and the axis of the main pulley 9 is closer to the guide rail body 6 than the test guide rail 3. The axis of the secondary pulley 10 is orthogonal to the axis of the main pulley 9, and the axis of the secondary pulley 10 is perpendicular to a plane between the guide rail body 6 and the lead screw 15.

[0040] Preferably, the traction rope 5 is, but is not limited to, a steel wire rope. One end of the traction rope 5 is connected to the auxiliary structure 8, and the other end is guided around the outer periphery of the main pulley 9 and then extends in a direction away from the guide rail body 6. After being guided around the outer periphery of the secondary pulley 10, it extends in a direction parallel to the guide rail body 6 to be connected to the loading mechanism 2.

[0041] Preferably, the loading mechanism 2 can be fixed on the frame 1 or on the ground or other foundation. The loading mechanism 2 is preferably arranged at one end of the guide rail body 6 along its length. The loading mechanism 2 includes, but is not limited to, a brake.

[0042] It is understood that a brake is an existing device used to apply traction force to moving parts, thereby slowing down, stopping, or maintaining a stopped state. The principle by which a brake generates traction force is existing technology. Generally speaking, the operating principle of a brake includes: when the load member 4 is driven to move away from the loading mechanism 2 by the drive assembly, the hydraulic pressure P of the brake is controlled simultaneously to cause the brake disc to slide against the brake disk; when the area of ​​the brake disk is S, the dynamic friction force between the brake disc and the brake disk is PSμ, where μ is the coefficient of friction. Since the brake disc is pivotally connected to the winding drum of the traction rope 5, the traction force of the traction rope 5 is equal to PSμ. By adjusting the hydraulic pressure of the brake, the traction force on the traction rope 5 can be adjusted. This unique design of the present application can solve the common problem in the prior art: how to apply a load to the measured slider while simultaneously driving the slider to slide relative to the guide rail body and adjusting the magnitude of the applied load.

[0043] Under this design, the load on the linear guide rail (i.e. the tension on the measured slider 7) is similar to the resultant force on the main pulley 9 on the load component 4. Therefore, to control the load on the linear guide rail, the tension on the traction rope 5 around the main pulley 9 on the load component 4 needs to be controlled. To further adjust and utilize the tension applied by the loading device, the spatial position of the traction rope 5 between the main pulley 9 and the test guide rail 3 can be adjusted.

[0044] Understandably, since the direction of the traction rope 5 between the main pulley 9 and the secondary pulley 10 remains unchanged, when the spatial position of the auxiliary guide rail 3 changes due to adjustments in the support structure (such as adjusting the installation position of the connecting bracket 11 and the crossbar), the spatial position of the traction rope 5 between the main pulley 9 and the auxiliary guide rail 3 will change. As the position of the auxiliary guide rail 3 changes, the tension of the traction rope 5 between the main pulley 9 and the auxiliary guide rail 3 will also change.

[0045] For ease of understanding, Figure 4 The direction change of the traction rope 5 in three position states of the test guide rail 3 (1), (2), and (3) was simply simulated. In these three position states, the tension of the traction rope 5 at the end connected to the test guide rail 3 was F, respectively. 21 F 22 F 23 If the tension at one end of the traction rope 5 connected to the loading mechanism 2 is F1, then the resultant force on the main pulley 9 at positions (1), (2), and (3) is F1 + ... 21 F1+F 22 F1+F 23 As can be seen, the magnitude and direction of the tension force borne by the main pulley 9 can be adjusted, thus allowing the magnitude and direction of the tension force borne by the linear guide under test to also be adjusted.

[0046] As can be seen, since the spatial position of the test guide rail 3 can be adjusted, on the one hand, this design can flexibly adapt to the length of the traction rope 5, so that the length of the traction rope 5 does not need to be adjusted in multiple tests, reducing the complex process of adjusting and replacing the traction rope 5. On the other hand, this design can change the tension on the main pulley 9 by adjusting the spatial position of the test guide rail 3 without adjusting the output value of the loading mechanism 2 (which also changes the tension on the linear guide rail); at this time, by adjusting the spatial position of the test guide rail 3, the tension on the main pulley 9 becomes greater than before, and thus the tension value on the tested linear guide rail is greater.

[0047] Furthermore, in some embodiments, the performance testing device for this linear guide can also simultaneously perform performance testing on the self-aligning roller bearing 17. For example, by replacing the bearings at both ends of the drive shaft 14 with the self-aligning roller bearing 17 to be tested, the drive shaft 14 is mounted on the frame 1 without load using the self-aligning roller bearing 17, and the drive shaft 14 is rotated by the drive motor. This allows for dynamic performance evaluation of the self-aligning roller bearing 17 without external load interference. Under this design, this shaft system structure can accurately measure the starting friction torque and low-speed stability of the self-aligning roller bearing 17 at different speed stages. By using frequency sweep testing to identify the critical speed and resonance point of the bearing-rotor system, and by using vibration sensors to collect data to analyze the inherent defects and vibration spectrum of the bearing parts, specialized tests on the rotational accuracy and operational stability of the self-aligning roller bearing 17 can be achieved.

[0048] The implementation principle of a performance testing device for linear guide rails according to an embodiment of this application includes: When using this linear guide performance testing device to test the linear guide, the drive assembly is first started, causing the drive motor to drive the lead screw 15 to rotate through the transmission shaft 14. Then, the lead screw 15 drives the load member 4 to move along the axial direction of the lead screw 15 (and also along the length direction of the guide body 6) through the transmission structure 16. Since the main pulley 9 on the load member 4 is also surrounded by the traction rope 5, and one end of the traction rope 5 is pulled by the test guide rail 3, and the other end is pulled by the loading mechanism 2; during the movement of the load member 4, the main pulley 9 on the load member 4 needs to overcome more than 1 times the tension applied by the loading device to the traction rope 5. At the same time, this tension will be transmitted to the guide body 6 and the tested slider 7, so that the tested slider 7 bears a load equivalent to this tension. As can be seen, when the load component 4 moves away from the loading mechanism 2 at the speed output by the drive motor (at this time, the load component 4 is regarded as moving forward), the guide rail body 6 under test will bear the pulling force applied by the load component 4 to the slider 7 under test. This pulling force causes friction between the slider 7 under test and the guide rail body 6, so that the guide rail body 6 needs to bear the friction of the slider 7 under test. During the cyclic movement of the load component 4, the slider 7 under test cyclically rubs until the slider 7 under test is damaged.

[0049] During the process of the tested slider 7 cyclically rubbing against the guide rail body 6, the traction force applied by the loading mechanism 2 to the traction rope 5 is set to a constant value. The moving speed of the load component 4 is adjusted by the drive component so that the tension of the traction rope 5 is a constant value and the moving speed of the load component 4 is a controllable variable. The relationship between the wear condition of the guide rail body 6 and the moving speed of the tested slider 7 can be obtained, thereby obtaining the limit value of the speed at which the tested slider 7 can withstand the load.

[0050] During the process of the tested slider 7 cyclically rubbing against the guide rail body 6, the moving speed of the drive component to the load component 4 is set to a constant value. The tension of the traction rope 5 is adjusted by the loading mechanism 2 so that the load on the tested slider 7 becomes a controllable variable. The relationship between the wear condition of the tested slider 7 and the load borne by the tested slider 7 can be obtained, thereby obtaining the limit value of the load that the tested slider 7 can withstand.

[0051] It's important to understand that the term "and / or" describes a relationship between related objects, indicating that three relationships can exist. For example, A and / or B can represent: A alone, A and B simultaneously, or B alone. In this article, the symbol " / " indicates that the related objects are in an "or" relationship, such as A / B meaning A or B.

[0052] It should be understood that expressions such as "comprising" and "may include" as used in this application indicate the existence of the disclosed functions, operations, or constituent elements, and do not limit one or more additional functions, operations, and constituent elements. In this application, terms such as "comprising" and / or "having" may be interpreted as indicating a specific characteristic, number, operation, constituent element, component, or combination thereof, but should not be interpreted as excluding the existence or possibility of adding one or more other characteristics, numbers, operations, constituent elements, components, or combinations thereof.

[0053] It should be understood that the terms “center,” “upper,” “lower,” “front,” “rear,” “left,” “right,” “vertical,” “horizontal,” “inner,” “outer,” “clockwise,” “counterclockwise,” “axial,” “radial,” and “circumferential” indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this application.

[0054] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0055] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0056] Those skilled in the art will readily understand that the above description is merely a preferred embodiment of this application and is not intended to limit this application. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A performance testing device for linear guides, characterized in that, The system includes a frame (1) and a loading mechanism (2). The frame (1) is equipped with a linear guide rail, a test guide rail (3), a load element (4), a traction rope (5), and a drive assembly, wherein: The linear guide rail includes a guide rail body (6) and a test slider (7). The guide rail body (6) is fixedly connected to the frame (1). The load member (4) is disposed on the side of the guide rail body (6). The load member (4) is slidably connected to the guide rail body (6) through the test slider (7). The driving component is used to drive the load member (4) to reciprocate along the length direction of the guide rail body (6) with adjustable speed. The accompanying test guide rail (3) is set above the guide rail body (6) and the load member (4). A slidable accompanying test structure (8) is connected to the accompanying test guide rail (3). The accompanying test structure (8) is connected to the load member (4). The load member (4) can drive the accompanying test structure (8) to move synchronously. The load member (4) is connected to a main pulley (9) and a secondary pulley (10). The axis of the main pulley (9) is parallel to the length direction of the guide rail body (6), and the axis of the secondary pulley (10) is perpendicular to the length direction of the guide rail body (6). The loading mechanism (2) is located at one end of the guide rail body (6) along its length. One end of the traction rope (5) is connected to the auxiliary structure (8), and the other end passes down around the main pulley (9) and the secondary pulley (10) and is connected to the loading mechanism (2). The loading mechanism (2) can apply an adjustable traction force to the traction rope (5).

2. The performance testing device for linear guides as described in claim 1, characterized in that, The frame (1) is provided with a support structure, and the test guide rail (3) is connected to the frame (1) in an adjustable position through the support structure.

3. The performance testing device for linear guides as described in claim 2, characterized in that, The support structure includes a connecting bracket (11) and a crossbar (12), wherein: Two connecting brackets (11) are provided, and the two connecting brackets (11) are horizontally adjustable and connected to the frame (1); The two ends of the crossbar (12) correspond one-to-one with the two connecting brackets (11), and both ends of the crossbar (12) can be height-adjusted and connected to the corresponding connecting brackets (11), while the accompanying guide rail (3) is connected to the crossbar (12).

4. The performance testing device for linear guides as described in claim 1, characterized in that, The performance testing device for linear guide rails also includes a follower (13), one end of which is connected to the test structure (8) and the other end is connected to the load (4). The test structure (8) moves synchronously with the load (4) through the follower (13).

5. The performance testing device for linear guides as described in claim 4, characterized in that, The follower (13) is a freely extendable connecting rod. One end of the connecting rod is rotatably connected to the test structure (8), and the other end is rotatably connected to the load member (4). The rotation axes of both ends are parallel to the length direction of the guide rail body (6).

6. The performance testing device for linear guides as described in claim 4, characterized in that, The follower (13), the rope segment of the traction rope (5) located between the auxiliary structure (8) and the main pulley (9), and the rope segment of the traction rope (5) located between the main pulley (9) and the secondary pulley (10) are all perpendicular to the guide rail body (6).

7. The performance testing device for linear guides as described in claim 1, characterized in that, The drive assembly includes a drive shaft (14), a lead screw (15), a transmission structure (16), and a drive motor, wherein: The drive shaft (14) is rotatably connected to the frame (1), the lead screw (15) is threadedly connected to the load member (4), and the drive shaft (14) and the lead screw (15) are driven by the transmission structure (16); the drive motor is fixed on the frame (1) and is used to drive the drive shaft (14) to rotate.

8. The performance testing device for linear guides as described in claim 7, characterized in that, The performance testing device for linear guide rails also includes self-aligning roller bearings (17), and both ends of the drive shaft (14) are rotatably connected to the frame (1) through the self-aligning roller bearings (17).

9. The performance testing device for linear guides as described in any one of claims 1-8, characterized in that, The guide rail body (6) is horizontally placed on the side and connected to the frame (1).

10. The performance testing device for linear guides as described in any one of claims 1-8, characterized in that, The center of gravity of the load member (4) is located at one end of the load member (4) near the guide rail body (6).

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