One-way loading and running device for planetary roller screw pair

Abstract

The utility model discloses a one -way loading run -in device of planetary roller screw pair belongs to detection equipment technical field, including base, the inside of base is established in many places with support groove, the inside of base is established in many places with test groove to the top of support groove, the inside fixed mounting of support groove has rotary seat, the inside bushing of rotary seat has the bearing disc, the inside of bearing disc is established with the rotary disc, the inside of rotary disc is equipped with the rotary slide pearl in many places, in the utility model, through the setting up of the shaft coupling, through the starting transmission motor, drive output shaft rotation, and the output shaft rotation main screw starts to rotate, and then another main screw is installed in the position of another test groove, and starts multiple transmission motor, and the performance of two main screws under different speed conditions is observed through the power of two different transmission motors, so as to eliminate microscopic defects, optimize the contact surface, improve transmission efficiency and motion accuracy, prolong the service life and reliability.

Description

Technical Field

[0001] This utility model belongs to the field of testing equipment technology, and in particular relates to a unidirectional loading and running-in device for a planetary roller screw pair. Background Technology

[0002] The planetary roller screw pair unidirectional loading run-in device is a specialized piece of equipment that optimizes the contact surfaces of the rollers, screw, and nut by simulating actual unidirectional load conditions, eliminating microscopic defects. It integrates a drive system, a high-precision loading module, and a real-time monitoring unit, allowing for segmented load adjustment. Combined with lubrication control and vibration analysis, it significantly improves transmission efficiency, positioning accuracy, and service life, and is widely used in high-precision transmission fields such as aerospace and CNC machine tools.

[0003] Existing technologies disclose several utility model patents in the field of unidirectional loading and running-in devices for planetary roller screw pairs. Among them, utility model patent CN 116593156 A discloses a unidirectional loading and running-in device for planetary roller screw pairs, including a base plate; a motor fixedly connected to the top of the base plate; a torque sensor coaxially fixed to the motor; a first support seat and a second support seat, both fixedly connected to the top of the base plate and coaxially arranged, wherein the first and second support seats are used to support the rotation of the screw; two limiting slides are provided, located on both sides of the screw, with their ends detachably connected to the first and second support seats respectively; and a pressure testing component fixedly connected to the nut for testing the thrust on the nut. This invention can achieve the purpose of simulating and testing the actual working conditions of planetary roller screw pairs.

[0004] The aforementioned utility model patent mounts the lead screw on a support frame. Although a series of tests can be conducted to test the performance of the lead screw, they cannot test the data performance of different models of lead screws at the same speed, so improvements are needed.

[0005] Based on this, this utility model designs a unidirectional loading and running-in device for planetary roller screw pairs to solve the above problems. Utility Model Content

[0006] The purpose of this utility model is to solve the problem that, although the performance of the lead screw can be tested through a series of tests when the lead screw is mounted on the support frame, it cannot test the data performance of different models of lead screws at the same speed, so an improvement is needed. Therefore, a one-way loading run-in device for planetary roller lead screw pairs is proposed.

[0007] To achieve the above objectives, the present invention adopts the following technical solution:

[0008] A unidirectional loading and running-in device for a planetary roller screw pair includes a base, with multiple support grooves inside the base and multiple test grooves corresponding to the upper part of the support grooves inside the base. A rotating seat is fixedly installed inside the support grooves, and a bearing plate is sleeved inside the rotating seat. A rotating disk is formed inside the bearing plate, and rotating balls are provided inside the rotating disk. A fixing groove is formed inside the rotating seat, and a rotating groove is formed inside the bearing plate.

[0009] As a further description of the above technical solution:

[0010] The rotating groove is internally connected to a main lead screw, and the surface of the main lead screw is connected to rollers at multiple points, and the surface of the main lead screw is also connected to retaining rings at multiple points.

[0011] As a further description of the above technical solution:

[0012] The retaining ring has multiple fixing holes on its surface, and the positions of the fixing holes correspond to the positions of the rollers. The surfaces of the multiple rollers are engaged with the outer shell.

[0013] As a further description of the above technical solution:

[0014] A coupling is engaged on one side of the main lead screw, and a transmission groove is provided on the top of the coupling.

[0015] As a further description of the above technical solution:

[0016] The base is provided with a mounting plate on top, and the mounting plate has a mounting groove inside. Multiple drive motors are fixedly installed on the top of the mounting plate.

[0017] As a further description of the above technical solution:

[0018] One end of the drive motor is provided with an output shaft, and the position of the output shaft corresponds to the position of the mounting groove. Multiple connecting grooves are present inside the base, and a support column is fixedly installed inside the connecting groove.

[0019] In summary, due to the adoption of the above technical solution, the beneficial effects of this utility model are:

[0020] 1. In this utility model, by setting a coupling and a transmission groove, when using the device, first install the main lead screw in a position corresponding to the test groove, ensuring that the main lead screw and the output shaft are coaxially aligned. Then, select a lubricant according to the running-in stage, start the transmission motor to drive the output shaft to rotate, and the main lead screw will start to rotate when the output shaft rotates. Then, install another main lead screw in another test groove and start multiple transmission motors. By using the power of two different transmission motors, observe the performance of the two main lead screws at different speeds to eliminate micro-defects, optimize the contact surface, improve transmission efficiency and motion accuracy, and extend service life and reliability.

[0021] 2. In this utility model, by setting rotating ball bearings and rotating grooves, one end of the main screw is aligned with the position of the rotating groove. The output shaft is driven to rotate by starting the transmission motor. The output shaft drives the main screw, which is meshed with the coupling, to rotate. One end of the main screw rotates inside the rotating groove. Multiple rotating ball bearings are driven to rotate synchronously inside the rotating disk. By replacing sliding friction with rolling friction, adaptive load sharing and vibration suppression, the control accuracy and efficiency of the running-in process are significantly improved, while reducing the wear risk of key components. Attached Figure Description

[0022] Figure 1 This is a three-dimensional structural diagram of a unidirectional loading and running-in device for a planetary roller screw pair proposed in this utility model.

[0023] Figure 2 This is a schematic diagram of the support structure of a unidirectional loading and running-in device for a planetary roller screw pair proposed in this utility model.

[0024] Figure 3 This is a schematic diagram of the nut structure of a unidirectional loading and running-in device for a planetary roller screw pair proposed in this utility model.

[0025] Figure 4 This is a cross-sectional structural schematic diagram of a unidirectional loading and running-in device for a planetary roller screw pair proposed in this utility model.

[0026] Figure 5 A schematic diagram of the coupling structure of a one-way loading run-in device for a planetary roller screw pair proposed in this utility model;

[0027] Figure 6 This is a cross-sectional view of the rotating seat of a unidirectional loading and running-in device for a planetary roller screw pair proposed in this utility model.

[0028] Figure 7 This is a schematic diagram of the drive motor structure of a unidirectional loading and running-in device for a planetary roller screw pair proposed in this utility model.

[0029] Legend:

[0030] 1. Base; 2. Support groove; 3. Test groove; 4. Rotary seat; 5. Bearing plate; 6. Rotary disk; 7. Rotary ball bearing; 8. Fixing groove; 9. Rotating groove; 10. Main lead screw; 11. Roller; 12. Retaining ring; 13. Fixing hole; 14. Housing; 15. Coupling; 16. Transmission groove; 17. Mounting plate; 18. Mounting groove; 19. Drive motor; 20. Output shaft; 21. Connecting groove; 22. Support column. Detailed Implementation

[0031] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative effort are within the protection scope of the present utility model.

[0032] Please see the appendix Figure 1 - Appendix Figure 7 This utility model provides a technical solution: a unidirectional loading and running-in device for a planetary roller screw pair, including a base 1, with multiple support grooves 2 inside the base 1, and multiple test grooves 3 inside the base 1 corresponding to the upper part of the support grooves 2. A rotating seat 4 is fixedly installed inside the support grooves 2, and a bearing plate 5 is sleeved inside the rotating seat 4. A rotating disk 6 is opened inside the bearing plate 5, and multiple rotating ball bearings 7 are provided inside the rotating disk 6. Multiple fixing grooves 8 are opened inside the rotating seat 4, and a rotating groove 9 is opened inside the bearing plate 5.

[0033] The specific implementation method is as follows: the main screw 10 is meshed inside the rotating groove 9, the main screw 10 is meshed with rollers 11 at multiple points on its surface, and the main screw 10 is meshed with retaining rings 12 at multiple points on its surface.

[0034] By setting a main lead screw 10 and rollers 11, a drive motor 19 is driven. One end of the drive motor 19 drives the main lead screw 10 to rotate. The main lead screw 10 meshes with multiple rollers 11, causing the multiple rollers 11 to rotate synchronously on the surface of the main lead screw 10. Through multi-point contact, the load is distributed, and the unidirectional axial force during the running-in process is borne, avoiding local plastic deformation.

[0035] The specific implementation method is as follows: multiple fixing holes 13 are provided on the surface of the retaining ring 12, and the positions of the fixing holes 13 correspond to the positions of the rollers 11. The surfaces of the multiple rollers 11 are engaged with the outer shell 14.

[0036] By setting retaining rings 12 and fixing holes 13, multiple retaining rings 12 are rotatably mounted inside, and multiple rollers 11 are driven to rotate when the main screw 10 rotates. The retaining rings 12 are installed at the end of the roller 11 assembly to restrict the axial movement of the rollers 11 and ensure that they always maintain engagement with the retaining rings 12 and the base 1 during the running-in process, so as to avoid uneven load distribution caused by displacement.

[0037] The specific implementation method is as follows: a coupling 15 is engaged with one side of the main lead screw 10, and a transmission groove 16 is provided on the top of the coupling 15.

[0038] By setting up the coupling 15 and the transmission groove 16, when the device is in use, one end of the main lead screw 10 is meshed with one end of the coupling 15. After driving the transmission motor 19, the output shaft 20 of one end of the transmission motor 19 corresponds to the transmission groove 16 of one end of the coupling 15 to transmit the power source to the main lead screw 10. This avoids additional bending moment or vibration caused by misalignment, protects the threads of the main lead screw 10 and the meshing surface of the rollers 11, and reduces uneven wear.

[0039] The specific implementation method is as follows: the top of the base 1 is provided with a mounting plate 17, the inside of the mounting plate 17 is provided with a mounting groove 18, and multiple drive motors 19 are fixedly installed on the top of the mounting plate 17.

[0040] By setting up mounting plate 17 and mounting slot 18, mounting plate 17 is fixedly installed on the top of base 1 by multiple support columns 22, and drive motor 19 is fixedly installed at multiple locations on the bottom of mounting plate 17. During testing, after fixing drive motor 19 to the top of mounting plate 17, the output shaft 20 of one end of drive motor 19 corresponds to mounting slot 18 to complete the further installation of the equipment.

[0041] The specific implementation method is as follows: one end of the drive motor 19 is provided with an output shaft 20, and the position of the output shaft 20 corresponds to the position of the mounting groove 18. Multiple connecting grooves 21 are provided inside the base 1, and a support column 22 is fixedly installed inside the connecting groove 21.

[0042] By setting up a drive motor 19 and an output shaft 20, when using this device, by aligning the output shaft 20 at one end of the drive motor 19 with the position of the transmission groove 16, the drive motor 19 is driven, and the output shaft 20 drives the main screw 10 at one end of the coupling 15 to rotate. The drive motor 19 can precisely control the speed and torque to adapt to the load requirements of different stages during the running-in process. During the deceleration or unloading stage, the drive motor 19 can convert kinetic energy into electrical energy to feed back to the power grid, thereby reducing energy consumption.

[0043] Working principle and usage: When using this device, first align the two main lead screws 10 with the test groove 3, align one end of the main lead screw 10 with one end of the coupling 15, and then align one end of the main lead screw 10 with the rotating groove 9, ensuring that the main lead screw 10 and the coupling 15 are coaxially aligned. Inject a certain amount of grease containing abrasive particles, and set parameters such as load gradient, speed, and duration through external equipment. After starting two different drive motors 19, observe the load, torque, speed, temperature, vibration, and acoustic emission signals of the two main lead screws 10 at different speeds. When the main lead screw 10 rotates, it drives multiple meshing rollers 11 to rotate. Through staged loading and dynamic adjustment, the contact surface characteristics are systematically optimized, improving the transmission efficiency and life of the PRS.

[0044] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A one-way loading running device for a planetary roller screw pair, comprising a base (1), characterized in that, The base (1) has multiple support grooves (2) inside, and multiple test grooves (3) are provided inside the base (1) above the support grooves (2). A rotating seat (4) is fixedly installed inside the support groove (2). A bearing plate (5) is sleeved inside the rotating seat (4). A rotating disk (6) is provided inside the bearing plate (5). A rotating ball (7) is provided inside the rotating disk (6). A fixing groove (8) is provided inside the rotating seat (4). A rotating groove (9) is provided inside the bearing plate (5).

2. A one-way loading play device for a planetary roller screw pair according to claim 1, characterized in that The rotating groove (9) is internally connected to a main screw (10), and the surface of the main screw (10) is connected to rollers (11) at multiple points. The surface of the main screw (10) is also connected to retaining rings (12) at multiple points.

3. A one-way loading play device for a planetary roller screw pair according to claim 2, characterized in that The retaining ring (12) has multiple fixing holes (13) on its surface, and the positions of the fixing holes (13) correspond to the positions of the rollers (11). The surfaces of the multiple rollers (11) are engaged with the outer shell (14).

4. A one-way loading play device for a planetary roller screw pair according to claim 2, wherein A coupling (15) is engaged on one side of the main screw (10), and a transmission groove (16) is provided on the top of the coupling (15).

5. A one-way loading play device for a planetary roller screw pair according to claim 1, wherein The base (1) has a mounting plate (17) on its top, and the mounting plate (17) has a mounting groove (18) inside. Multiple drive motors (19) are fixedly installed on the top of the mounting plate (17).

6. A one-way loading play device for a planetary roller screw pair according to claim 5, characterized in that One end of the drive motor (19) is provided with an output shaft (20), and the position of the output shaft (20) corresponds to the position of the mounting groove (18). Multiple connecting grooves (21) are present inside the base (1), and a support column (22) is fixedly installed inside the connecting groove (21).

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