Fatigue life testing machine for roller screw

Abstract

The utility model belongs to the technical field of roller screws, and discloses a roller screw fatigue life testing machine which comprises a test bed, a support frame is arranged on the front side of the top of the test bed, two sliding grooves are formed in the top of the test bed side by side, the bottom of the support frame is connected with sliding blocks which are inserted into the sliding grooves in a sliding mode, and the sliding blocks are connected with the test bed. An electric push rod is installed at the bottom of the inner side of the supporting frame, the output end of the electric push rod penetrates through the top of the supporting frame and is connected with a supporting plate, a plurality of containing grooves used for containing roller screws are formed in the top of the supporting plate side by side, a supporting table is installed on the rear side of the top of the test bed, and an installation frame is installed on the top of the supporting table. A plurality of servo motors are installed on the vertical part of the installation frame side by side. According to the scheme, the problem that a plurality of roller screws cannot be conveniently and efficiently tested at the same time although an existing device can smoothly complete the fatigue life test of the roller screws is solved.

Description

Technical Field

[0001] This utility model belongs to the field of roller screw technology, specifically a roller screw fatigue life testing machine. Background Technology

[0002] The core function of a roller screw is to efficiently convert rotary motion into linear motion. It also has the characteristics of high precision, high efficiency, high rigidity and reversibility. It is the most commonly used transmission element in machine tools and precision machinery. After the roller screw is processed, it needs to be tested for fatigue life to verify the processing quality. In order to conduct the test smoothly, a roller screw fatigue life testing machine needs to be designed.

[0003] However, the following problems were found in the implementation of the relevant technology: Although the existing device can successfully complete the fatigue life test of the roller screw, it cannot conveniently and efficiently test multiple roller screws at the same time. Utility Model Content

[0004] To address the problems mentioned in the background art, this utility model provides a roller screw fatigue life testing machine that can quickly fix multiple roller screws and has the advantage of being able to conveniently and efficiently test multiple roller screws at the same time.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a roller screw fatigue life testing machine, comprising a test bench, a support frame provided on the front top of the test bench, two parallel sliding grooves opened on the top of the test bench, and a slider slidably inserted into the sliding grooves connected to the bottom of the support frame, an electric push rod installed on the bottom inner side of the support frame, and the output end of the electric push rod passing through the top of the support frame and connected to a support plate, a plurality of placement slots for placing roller screws arranged in parallel on the top of the support plate, a support platform installed on the rear top of the test bench, a mounting frame installed on the top of the support platform, a plurality of servo motors arranged in parallel on the vertical part of the mounting frame, and the output ends of the servo motors passing through the vertical part of the mounting frame and installed with couplings corresponding to the placement slots, a semi-circular fixing component one installed on the upper front end of the coupling, a fixing component two hinged to the bottom of the fixing component one, and fixing plates integrally formed on the corresponding sides of the fixing component one and the fixing component two, with a fixing hole opened in the middle of the fixing plate.

[0006] Preferably, the horizontal portion of the mounting bracket has multiple mounting holes arranged side by side, and mounting bolts are installed between the mounting holes and the support platform.

[0007] Preferably, the top of the support plate is symmetrically connected with two connectors, and the two connectors are connected by an elastic buckle.

[0008] Preferably, storage boxes are installed on both the left and right sides of the support platform, and the top of each storage box on the side away from the support platform is hinged with a lid.

[0009] Preferably, handles are installed on both the left and right outer walls of the support frame, and the corners of the handles are rounded.

[0010] Preferably, the side wall of the electric push rod is fixedly fitted with a reinforcing seat, and the reinforcing seat is installed on the corresponding side of the support frame by multiple bolts.

[0011] Preferably, the test bench is equipped with support legs at all four corners of its bottom, and support members are installed at the bottom of the support legs.

[0012] Preferably, a storage rack is installed at the bottom of the test bench, and multiple partitions are connected longitudinally side by side on the inner side of the storage rack.

[0013] Compared with the prior art, the beneficial effects of this utility model are as follows:

[0014] 1. This utility model moves multiple roller screws to below the first fixing part by moving the support frame, then raises the roller screws by electric push rod so that the corresponding ends abut against the inner side of the first fixing part, and then closes and fixes the second fixing part to connect the roller screws to the corresponding servo motors. This allows for convenient and efficient testing of multiple roller screws at the same time.

[0015] 2. This utility model ensures the smooth movement of the support frame by using two sets of sliding grooves and sliders. In addition, the method of pressing the top of the roller screw with an elastic buckle ensures that the roller screw can move smoothly. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the mounting bracket of this utility model;

[0018] Figure 3 This is a cross-sectional view of the support frame of this utility model;

[0019] Figure 4 This is a schematic diagram of the structure of the storage rack of this utility model.

[0020] In the diagram: 1. Test bench; 2. Support frame; 3. Slide groove; 4. Electric push rod; 5. Support plate; 6. Placement slot; 7. Support platform; 8. Mounting bracket; 9. Servo motor; 10. Coupling; 11. Fixing component one; 12. Fixing component two; 13. Mounting bolt; 14. Elastic buckle; 15. Storage box; 16. Handle; 17. Reinforcing base; 18. Support leg; 19. Storage rack; 20. Partition. Detailed Implementation

[0021] 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 of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figures 1 to 4 As shown, this utility model provides a roller screw fatigue life testing machine, including a test bench 1. A support frame 2 is provided on the front top of the test bench 1. Two sliding grooves 3 are opened side by side on the top of the test bench 1, and a slider (not shown in the figure) is connected to the bottom of the support frame 2 and slidably inserted into the sliding groove 3. The cooperation between the slider and the sliding groove 3 ensures that the support frame 2 can move smoothly on the top of the test bench 1. An electric push rod 4 is installed on the bottom inner side of the support frame 2, and the output end of the electric push rod 4 passes through the top of the support frame 2 and is connected to a support plate 5. The electric push rod 4 can drive the support plate 5 to lift and lower. Multiple placement grooves 6 for placing roller screws are arranged side by side on the top of the support plate 5. Rubber pads are adhered to the inner side of the placement grooves 6 to increase friction. The roller screws are placed in the corresponding placement grooves 6.

[0023] A support platform 7 is installed on the top rear side of the test bench 1 by multiple sets of bolts. A mounting frame 8 is installed on the top of the support platform 7. Multiple servo motors 9 are installed side by side on the vertical part of the mounting frame 8 via motor mounts. The servo motors 9 can drive the connected roller screw to rotate for fatigue life testing. The output end of the servo motor 9 passes through the vertical part of the mounting frame 8 and is connected to a coupling 10 corresponding to the placement slot 6 by bolts. A semi-circular fixing part 11 is welded to the upper front end of the coupling 10. A fixing part 2 12 is hinged to the bottom of the fixing part 11. When the fixing part 2 12 is closed, it can cooperate with the fixing part 11 to clamp the roller screw. Fixing pieces are integrally formed on the corresponding sides of the fixing parts 11 and 2 12. Fixing holes are opened in the middle of the fixing pieces. Screws are screwed between the two fixing holes to fix the fixing parts 11 and 2 12, thereby completing the fixing of the roller screw.

[0024] Specifically, the horizontal portion of the mounting bracket 8 has multiple mounting holes arranged side by side, and mounting bolts 13 are installed between the mounting holes and the support platform 7 to increase the stability of the mounting bracket 8 and thus increase the stability of the servo motor 9.

[0025] Furthermore, the top of the support plate 5 is symmetrically connected to two connectors by screws, and an elastic buckle 14 is bonded between the two connectors. The elastic buckle 14 can press down on the top of the roller screw to increase stability.

[0026] Furthermore, storage boxes 15 are installed on both the left and right sides of the support platform 7 by screws. The screws used to fix the first fixing part 11 and the second fixing part 12 can be placed inside the storage box 15 for easy access. The top of the storage box 15 on the side away from the support platform 7 is hinged with a lid.

[0027] It is worth noting that the left and right outer walls of the support frame 2 are fitted with handles 16 by screws. The handles 16 facilitate the application of force to move the support frame 2, and the corners of the handles 16 are rounded to improve the grip.

[0028] It is worth noting that the side wall of the electric push rod 4 is fixedly fitted with a reinforcing seat 17, and the reinforcing seat 17 is installed on the corresponding side of the support frame 2 by multiple bolts, which increases the stability of the electric push rod 4 during operation.

[0029] It is worth mentioning that support legs 18 are welded to the four corners of the bottom of the test bench 1, and support components are welded to the bottom of the support legs 18, which can stably support the test bench 1.

[0030] It is worth emphasizing that the bottom of the test bench 1 is equipped with a storage rack 19 by multiple screws, and multiple partitions 20 are connected in parallel and longitudinally on the inner side of the storage rack 19. With the help of multiple partitions 20, various specifications of roller screws can be stored separately.

[0031] Among them, the electric actuator 4 and the servo motor 9 are existing technologies and will not be described in detail; at the same time, this utility model also includes a power supply, controller, and switch, which are not the main technical points of this patent and will not be described in detail; the "front, back, left, and right" perspectives of this device are as follows: Figure 1 The direction shown in the diagram is the reference.

[0032] Working principle: Multiple ball screws are placed in different placement slots 6, and the top of the ball screws is fixed by connecting the elastic buckle 14. Then, the support frame 2 is moved to the vicinity of the support platform by the handle 16. At this time, the corresponding end of the ball screw is located below the fixing part 11. The support plate 5 is raised by the electric push rod 4 so that the corresponding end of the ball screw abuts against the inside of the fixing part 11. Then, the corresponding fixing part 2 12 is closed and the screw is screwed into the fixing hole to fix it. The above steps can be repeated to fix multiple ball screws. Then, the elastic buckle 14 is removed and the support plate 5 is lowered. The servo motor 9 can then drive the ball screw to rotate multiple times through the coupling 10 to conduct fatigue life test.

[0033] It should be noted that, in this document, relational terms such as "first" and "second" are used only to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0034] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A roller screw fatigue life testing machine, comprising a test bench (1), characterized in that: A support frame (2) is provided on the front top of the test bench (1). Two sliding grooves (3) are opened side by side on the top of the test bench (1). A slider is connected to the bottom of the support frame (2) and is slidably inserted into the sliding groove (3). An electric push rod (4) is installed on the bottom inner side of the support frame (2). The output end of the electric push rod (4) passes through the top of the support frame (2) and is connected to a support plate (5). The top of the support plate (5) has multiple placement grooves (6) for placing roller screws. A support platform (7) is installed on the rear top of the test bench (1). A mounting bracket (8) is installed on the top of the support platform (7). Multiple servo motors (9) are installed side by side on the vertical part of the mounting bracket (8). The output end of the servo motor (9) passes through the vertical part of the mounting bracket (8) and is equipped with a coupling (10) corresponding to the placement slot (6). A semi-circular fixing part one (11) is installed on the upper front end of the coupling (10). A fixing part two (12) is hinged to the bottom of the fixing part one (11). Fixing pieces are integrally formed on the corresponding sides of the fixing part one (11) and the fixing piece two (12). A fixing hole is opened in the middle of the fixing piece.

2. The roller screw fatigue life testing machine according to claim 1, characterized in that: The mounting bracket (8) has multiple mounting holes arranged side by side in its horizontal portion, and mounting bolts (13) are installed between the mounting holes and the support platform (7).

3. The roller screw fatigue life testing machine according to claim 1, characterized in that: The top of the support plate (5) is symmetrically connected to two connectors, and the two connectors are connected by an elastic buckle (14).

4. The roller screw fatigue life testing machine according to claim 1, characterized in that: Storage boxes (15) are installed on both the left and right sides of the support platform (7), and the top of the storage box (15) on the side away from the support platform (7) is hinged with a lid.

5. The roller screw fatigue life testing machine according to claim 1, characterized in that: The support frame (2) is equipped with handles (16) on both the left and right outer walls, and the corners of the handles (16) are rounded.

6. The roller screw fatigue life testing machine according to claim 1, characterized in that: The electric push rod (4) has a reinforcing seat (17) fixedly sleeved on its side wall, and the reinforcing seat (17) is installed on the corresponding side of the support frame (2) by multiple bolts.

7. The roller screw fatigue life testing machine according to claim 1, characterized in that: The test bench (1) has support legs (18) installed at the four corners of its bottom, and support members are installed at the bottom of the support legs (18).

8. The roller screw fatigue life testing machine according to claim 1, characterized in that: The bottom of the test bench (1) is equipped with a storage rack (19), and multiple partitions (20) are connected in parallel longitudinally on the inner side of the storage rack (19).

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