Dual-motor anti-backlash simulation test bench and simulation test system

Abstract

The utility model provides a dual-motor anti-backlash simulation test bench and a simulation test system, and the test bench comprises a supporting mechanism which comprises a frame body, installation plates, and a grating ruler, and the installation plates are provided with racks; each load mechanism comprises a bearing table, a moving table, a rotary driver and a gap adjusting assembly, a moving groove is formed in each bearing table, each moving table is embedded in the corresponding moving groove, each gap adjusting assembly is arranged between the corresponding moving table and the corresponding bearing table, each rotary driver is provided with a gear, and a signal acquisition unit is arranged in each rotary driver. Simulation test conditions can be freely adjusted, meanwhile, the formed gantry structure driven by the two motors can effectively balance output force of the two motors, the gap adjusting assembly can achieve accurate adjustment of the gap between the gear and the rack, the grating ruler can assist in detecting the moving precision of the load mechanism, and the test efficiency is improved. The method has the advantages of simplicity in operation, high response speed, high recognition precision, flexibility in use, wide application range and the like.

Description

Technical Field

[0001] This utility model relates to the field of test bench technology, specifically to a dual-motor backlash-free simulation test bench and simulation test system. Background Technology

[0002] In the fields of modern industrial automation and precision machinery, rack and pinion transmission systems serve as crucial drive components, their performance directly impacting the operational efficiency and accuracy of the entire motion system. This is particularly true in precision machining, robotics, and high-speed material handling equipment, where the backlash in rack and pinion transmissions significantly affects the system's end-effector positioning performance. The technical challenge lies in the fact that backlash can cause deviations in the system's positioning tasks, and these deviations exhibit significant inconsistencies under different load conditions, thus impacting the quality of the final product and the reliability of the system.

[0003] Existing rack and pinion transmission systems have significant technical shortcomings in adjusting backlash under different load conditions. Because the adjustment mechanisms of traditional technologies are relatively fixed, they cannot dynamically adjust according to real-time load changes. Therefore, the end-positioning performance of the system is difficult to maintain stable under heavy, light, or variable load conditions. This inflexibility means that in applications requiring high precision, such as precision machine tools and aerospace component manufacturing, the system's performance often fails to meet high standards.

[0004] Furthermore, existing gap testing methods often require specialized equipment and complex processes, which not only increases production costs but also limits their application frequency in actual production due to the complexity of the testing. The inconvenience of gap adjustment and testing makes it difficult for motion systems to achieve rapid and accurate gap compensation when facing rapidly changing load conditions, thus affecting the system's dynamic response capability and long-term operational accuracy and stability.

[0005] This invention is based on a thorough analysis of the shortcomings of existing technologies and a forward-looking consideration of market demands. The invention aims to develop a novel gear and rack transmission backlash adjustment technology. This technology can adjust the backlash in real time and flexibly according to different load conditions, ensuring that the motion system achieves optimal movement accuracy under various working conditions. By simplifying the backlash testing process and improving the intelligence level of the adjustment mechanism, this invention not only significantly improves the end-positioning performance of the motion system but also reduces maintenance costs and increases production efficiency, bringing revolutionary progress to the fields of precision machining and automation control. Summary of the Invention

[0006] Therefore, the technical problem to be solved by this utility model is to overcome the difficulty in adjusting the gear and rack clearance in the existing motion system and the limited simulation scenarios, and to provide a dual-motor backlash elimination simulation test bench and simulation test system.

[0007] To solve the above-mentioned technical problems, this utility model provides a dual-motor backlash elimination simulation test bench, comprising: a support mechanism, the support mechanism including a frame, at least two mounting plates and at least two grating rulers, the at least two mounting plates extending along a first direction and arranged along a second direction on the frame, the at least two grating rulers respectively correspondingly disposed on one side of the at least two mounting plates, and each mounting plate having a rack extending along the first direction; at least two load mechanisms, the at least two load mechanisms respectively disposed on the at least two mounting plates, the at least two load mechanisms being interconnected and moving synchronously, each load mechanism including a bearing platform and at least The system includes a movable stage, at least one rotary driver, and at least one gap adjustment assembly. A load is placed on the support platform, which is slidably connected to the mounting plate along a first direction. The support platform has at least one movable groove extending along a second direction inside, and at least one movable stage is correspondingly embedded in at least one of the movable grooves. The gap adjustment assembly is disposed between the movable stage and the support platform to allow the movable stage to move along the movable groove. The rotary driver is disposed on the movable stage and moves synchronously with the movable stage. Its working end is provided with a gear, and it has a signal acquisition unit inside. The gear meshes with the rack to drive the load mechanism to move along the first direction.

[0008] In one embodiment of this utility model, two adjacent load mechanisms are connected by a connecting plate.

[0009] In one embodiment of the present invention, any of the load mechanisms includes two rotary drives and two moving platforms, with the two rotary drives spaced apart along a first direction at opposite ends of the support platform.

[0010] In one embodiment of the present invention, each of the load mechanisms includes two gap adjustment components, and each of the gap adjustment components is symmetrically arranged on both sides of the gear along a first direction.

[0011] In one embodiment of the present invention, the gap adjustment assembly includes a first fixing block, a second fixing block, and an adjustment shaft. The first fixing block is connected to the support platform, the second fixing block is connected to the movable platform, one end of the adjustment shaft is fixedly connected to the first fixing block, and the other end passes through the second fixing block and is threadedly engaged with the second fixing block.

[0012] In one embodiment of the present invention, the mounting plate is provided with at least one slide rail, the slide rail extends along a first direction and is arranged with the rack along a second direction, or the mounting plate is provided with two slide rails, any one of the slide rails extends along the first direction, and the two slide rails are symmetrically arranged on both sides of the support platform in the second direction.

[0013] In one embodiment of the present invention, the support platform is provided with at least one slider, which is slidably connected to the slide rail so that the load mechanism moves along a first direction.

[0014] In one embodiment of this utility model, the bottom of the frame is provided with casters.

[0015] In one embodiment of this utility model, it further includes a control system, wherein the rotary drive and the signal acquisition unit are respectively connected to the control system.

[0016] This utility model also provides a simulation test system, which includes the above-mentioned dual-motor backlash-free simulation test bench.

[0017] The above-mentioned technical solution of this utility model has the following advantages compared with the prior art:

[0018] The dual-motor backlash-free simulation test bench and simulation test system described in this utility model provide an assembly platform for the movement of the load mechanism through a support mechanism. At least two load mechanisms can be set with different loads, allowing for free adjustment of simulation test conditions according to actual usage requirements. Simultaneously, the resulting dual-motor driven gantry structure effectively balances the output forces of the two motors, reducing errors caused by torque fluctuations of a single motor in traditional structures. Furthermore, the gap adjustment component enables precise adjustment of the gap between the gear and rack, and the grating ruler assists in detecting the movement accuracy of the load mechanism, thereby achieving a high-precision simulation test process. Compared to traditional test structures, this application can accurately reflect the impact of gear and rack transmission backlash on the system's end-positioning performance, thus allowing for timely adjustment of the corresponding actual system positioning accuracy and trajectory accuracy. Therefore, it possesses significant advantages such as simple operation, fast response speed, high recognition accuracy, flexible use, and wide applicability. Attached Figure Description

[0019] To make the content of this utility model easier to understand, the present utility model will be further described in detail below with reference to specific embodiments and accompanying drawings.

[0020] Figure 1 This is a three-dimensional structural diagram of the dual-motor backlash elimination simulation test bench in a preferred embodiment of this utility model;

[0021] Figure 2 yes Figure 1A magnified schematic diagram of point A in the dual-motor backlash elimination simulation test bench shown;

[0022] Figure 3 yes Figure 1 A magnified schematic diagram of point B in the dual-motor backlash elimination simulation test bench shown;

[0023] Figure 4 yes Figure 1 A three-dimensional structural diagram of the load mechanism in the dual-motor backlash-free simulation test bench shown.

[0024] Figure 5 yes Figure 1 The diagram shows a three-dimensional structural schematic of part of the load mechanism in the dual-motor backlash elimination simulation test bench.

[0025] Explanation of reference numerals in the accompanying drawings: 100, support mechanism; 110, frame; 111, pulley; 120, mounting plate; 121, slide rail; 122, gear rack; 130, grating ruler; 200, load mechanism; 210, bearing platform; 211, slider; 212, moving groove; 220, moving stage; 230, rotary driver; 231, gear; 240, gap adjustment assembly; 241, first fixing block; 242, second fixing block; 243, adjusting shaft; 250, connecting plate; X, first direction; Y, second direction; Z, third direction. Detailed Implementation

[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, so that those skilled in the art can better understand and implement the present invention. However, the embodiments are not intended to limit the present invention.

[0027] Example 1

[0028] See Figure 1As shown, this embodiment provides a dual-motor backlash elimination simulation test bench, which includes: a support mechanism 100, the support mechanism 100 including a frame 110, at least two mounting plates 120 and at least two grating rulers 130, the at least two mounting plates 120 extending along a first direction X and arranged along a second direction Y on the frame 110, the at least two grating rulers 130 respectively correspondingly disposed on one side of the at least two mounting plates 120, and each mounting plate 120 is provided with a rack 122 extending along the first direction X; at least two load mechanisms 200, the at least two load mechanisms 200 respectively disposed on the at least two mounting plates 120, the at least two load mechanisms 200 being interconnected and moving synchronously, each load mechanism 200 including a bearing platform 210 and at least one moving platform 220. The system includes at least one rotary driver 230 and at least one gap adjustment assembly 240. The load is placed on the support platform 210, which is slidably connected to the mounting plate 120 along a first direction X. The support platform 210 has at least one movable groove 212 extending along a second direction Y. At least one movable stage 220 is correspondingly embedded in at least one movable groove 212. The gap adjustment assembly 240 is disposed between the movable stage 220 and the support platform 210 to allow the movable stage 220 to move along the movable groove 212. The rotary driver 230 is disposed on the movable stage 220 and moves synchronously with the movable stage 220. Its working end is provided with a gear 231, and it has a signal acquisition unit inside. The gear 231 meshes with the rack 122 to drive the load mechanism 200 to move along the first direction X.

[0029] The dual-motor backlash-free simulation test bench described in this embodiment provides an assembly platform for the movement of the load mechanism 200 through the support mechanism 100. At least two load mechanisms 200 can be configured with different loads, allowing for free adjustment of simulation test conditions according to actual usage requirements. Simultaneously, the dual-motor driven gantry structure effectively balances the output forces of the two motors, reducing errors caused by torque fluctuations of a single motor in traditional structures. Furthermore, the gap adjustment component 240 enables precise adjustment of the gap between the gear 231 and the rack 122, and the grating ruler 130 assists in detecting the movement accuracy of the load mechanism 200, thereby achieving a high-precision simulation test process. Compared to traditional test structures, this application can accurately reflect the impact of the transmission gap of the gear 231 and rack 122 on the system's end-positioning performance, and thus promptly adjust the corresponding actual system positioning accuracy and trajectory accuracy. Therefore, it possesses significant advantages such as simple operation, fast response speed, high recognition accuracy, flexible use, and wide applicability.

[0030] See Figure 1As shown, in this embodiment, the frame 110 is preferably a rectangular frame structure, which provides an installation platform for other structures. It should be noted that, for ease of description, this embodiment defines the length direction of the frame 110 as the first direction X, the width direction as the second direction Y, and the thickness direction as the third direction Z. The first direction X, the second direction Y, and the third direction Z are mutually perpendicular to each other, and the first direction X and the second direction Y are located in the same plane. Furthermore, the frame 110 in this embodiment is provided with universal casters 111 at its bottom to facilitate the overall transport of this dual-motor backlash elimination simulation test bench.

[0031] See Figure 1 and Figure 2 As shown, the support mechanism 100 in this embodiment includes two mounting plates 120, which respectively provide a moving platform for the two load mechanisms 200. Each mounting plate 120 is equipped with a grating ruler 130 to detect the moving accuracy of the load mechanism 200. Further, the mounting plate 120 in this embodiment is provided with two slide rails 121, each extending along a first direction X. The two slide rails 121 are symmetrically arranged on both sides of the support platform 210 in a second direction Y. A rack 122 is correspondingly arranged between the two slide rails 121, thereby further improving the stability of the load mechanism 200 during movement. In different embodiments, the mounting plate 120 may also be provided with one slide rail 121, which is arranged along the second direction Y with the rack 122. Specifically, the number and type of slide rails 121 can be adaptively adjusted according to actual usage requirements, and this utility model does not impose specific limitations in this regard.

[0032] See Figure 3 As shown, correspondingly, each of the two load mechanisms 200 in this embodiment is provided with a slider 211. The slider 211 is connected to the bottom of the corresponding support platform 210, and the slider 211 is slidably connected to the slide rail 121 so that the load mechanism 200 moves along the first direction X. Furthermore, in order to achieve synchronous movement of the two load mechanisms 200, adjacent load mechanisms 200 are connected by a connecting plate 250.

[0033] See Figure 4 As shown, any load mechanism 200 in this embodiment includes two rotary drivers 230 and two moving platforms 220. The two rotary drivers 230 are spaced apart at opposite ends of the bearing platform 210 along the first direction X. The rotary drivers 230 are used to provide driving force for the load mechanism 200. The gear 231 and rack 122 can correspondingly convert this rotary driving force into a linear driving force along the first direction X.

[0034] Furthermore, to achieve gap adjustment between gear 231 and rack 122, each load mechanism 200 in this embodiment includes two gap adjustment components 240, and each gap adjustment component 240 is symmetrically arranged on both sides of gear 231 along the first direction X. Further, each gap adjustment component 240 includes a first fixing block 241, a second fixing block 242, and an adjustment shaft 243. The first fixing block 241 is connected to the support platform 210, the second fixing block 242 is connected to the moving platform 220, one end of the adjustment shaft is fixedly connected to the first fixing block 241, and the other end passes through the second fixing block 242 and is threadedly engaged with the second fixing block 242.

[0035] In this embodiment, the signal acquisition unit is preferably an encoder, which provides the system with dynamic response capability and long-term operational accuracy and stability under different gap conditions. Furthermore, this embodiment also includes a control system, with the rotary driver 230 and the signal acquisition unit respectively connected to the control system. During actual production and processing, operators can use the control system to adjust the above structure in real time, thereby improving the flexibility of the equipment. Parameters can also be preset through the control system, thereby increasing the automation level of the equipment.

[0036] Example 2

[0037] A simulation test system includes the dual-motor backlash-free simulation test bench described in Embodiment 1.

[0038] In summary, the dual-motor backlash-free simulation test bench and simulation test system described in this utility model provide an assembly platform for the movement of the load mechanism 200 through the support mechanism 100. At least two load mechanisms 200 can be configured with different loads, allowing for free adjustment of simulation test conditions according to actual usage requirements. Simultaneously, the dual-motor driven gantry structure effectively balances the output forces of the two motors, reducing errors caused by torque fluctuations of a single motor in traditional structures. Furthermore, the gap adjustment component 240 enables precise adjustment of the gap between the gear 231 and the rack 122, and the grating ruler 130 assists in detecting the movement accuracy of the load mechanism 200, thereby achieving a high-precision simulation test process. Compared to traditional test structures, this application can accurately reflect the impact of the transmission gap of the gear 231 and rack 122 on the system's end-positioning performance, and thus promptly adjust the corresponding actual system positioning accuracy and trajectory accuracy. Therefore, it possesses significant advantages such as simple operation, fast response speed, high recognition accuracy, flexible use, and wide applicability.

[0039] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the protection scope of this invention.

Claims

1. A dual-motor backlash-free simulation test bench, characterized in that: include: A support mechanism includes a frame, at least two mounting plates, and at least two grating rulers. The at least two mounting plates extend along a first direction and are arranged on the frame along a second direction. The at least two grating rulers are respectively disposed on one side of the at least two mounting plates. Each mounting plate is provided with a rack, which extends along the first direction. At least two load mechanisms are respectively disposed on at least two mounting plates. The at least two load mechanisms are interconnected and move synchronously. Each load mechanism includes a support platform, at least one movable platform, at least one rotary driver, and at least one gap adjustment component. The load is placed on the support platform. The support platform is slidably connected to the mounting plate along a first direction and has at least one movable groove extending along a second direction inside. At least one movable platform is correspondingly embedded in at least one movable groove. The gap adjustment component is disposed between the movable platform and the support platform to allow the movable platform to move along the movable groove. The rotary driver is disposed on the movable platform and moves synchronously with the movable platform. Its working end is provided with a gear and has a signal acquisition unit inside. The gear meshes with the rack to drive the load mechanism to move along the first direction.

2. The dual-motor backlash elimination simulation test bench according to claim 1, characterized in that: The two adjacent load mechanisms are connected by a connecting plate.

3. The dual-motor backlash elimination simulation test bench according to claim 1, characterized in that: Each of the load mechanisms includes two rotary drives and two moving platforms, with the two rotary drives spaced apart along a first direction at opposite ends of the support platform.

4. The dual-motor backlash elimination simulation test bench according to claim 1, characterized in that: Each of the load mechanisms includes two gap adjustment components, and each of the gap adjustment components is symmetrically arranged on both sides of the gear along a first direction.

5. The dual-motor backlash elimination simulation test bench according to claim 1, characterized in that: The gap adjustment assembly includes a first fixed block, a second fixed block, and an adjustment shaft. The first fixed block is connected to the support platform, the second fixed block is connected to the movable platform, one end of the adjustment shaft is fixedly connected to the first fixed block, and the other end passes through the second fixed block and is threadedly engaged with the second fixed block.

6. The dual-motor backlash elimination simulation test bench according to claim 1, characterized in that: The mounting plate is provided with at least one slide rail, which extends along a first direction and is arranged with the rack along a second direction. Alternatively, the mounting plate is provided with two slide rails, both of which extend along the first direction and are symmetrically arranged on both sides of the support platform in the second direction.

7. The dual-motor backlash elimination simulation test bench according to claim 6, characterized in that: The support platform is provided with at least one slider, which is slidably connected to the slide rail so that the load mechanism can move along a first direction.

8. The dual-motor backlash elimination simulation test bench according to claim 1, characterized in that: The frame is equipped with casters at the bottom.

9. The dual-motor backlash elimination simulation test bench according to claim 1, characterized in that: It also includes a control system, with the rotary drive and the signal acquisition unit respectively connected to the control system.

10. A simulation testing system, characterized in that: The dual-motor backlash elimination simulation test bench as described in any one of claims 1 to 9.

Images