High-efficiency four-station ball screw spline pair running-in device

Abstract

The utility model discloses a high-efficiency four-station ball screw spline pair running-in device, and relates to the technical field of ball screw spline pairs. The device specifically comprises a fixed workbench, a running-in station and a counterweight device, the fixed workbench is placed on the ground through four supporting ground feet, the running-in station is connected with the fixed workbench through bolts, one end of a ball screw spline pair is fixedly installed on the running-in station, and the other end of the ball screw spline pair is connected with the counterweight device through a tensioning sleeve. By arranging the fixed workbench, the four running-in stations and the counterweight device, running-in tests of four different types of ball screw spline pairs can be realized at the same time, good adaptability is realized, running-in efficiency is improved, the servo motor drives the ball screw spline pairs through the synchronous belt, up-and-down movement, rotation and spiral movement can be realized, and the service life of the ball screw spline pairs is prolonged. The balance weight can be replaced according to different load requirements of different models of ball screw spline pairs under actual working conditions, the operation is convenient, and meanwhile, the operation performance of the ball screw spline pair can be detected.

Description

Technical Field

[0001] The utility model relates to the technical field of ball screw spline pairs, in particular to a high-efficiency four-station ball screw spline pair running-in device. Background Technique

[0002] The ball screw spline pair is a precision rolling functional component that can achieve rotational, linear, and helical motions. As a transmission connecting part, the ball spline has a wide range of applications in industrial machinery, automobiles, aerospace, etc., and has broad application prospects. Due to the higher requirements for transmission accuracy and reliability in its application fields, there are machining errors in the machining and manufacturing processes of the spline shaft of the ball screw, the ball screw nut, the spline nut, the steel balls, and the returner. After assembly, excessive wear of the steel balls and the ball screw spline pair is likely to occur during high-speed operation, which affects the transmission accuracy and reliability of the ball screw pair. After assembly, running-in is required for the trial operation of the ball screw spline pair to achieve the best surface roughness under given friction conditions and form an effective lubricating oil film, which helps to delay the time to enter the severe wear stage, extend the part life, and improve the service performance of the ball screw spline pair.

[0003] At present, there are two ways to run in the ball screw spline pair. One is manual running-in, where the running-in is carried out by moving the spline pair and the ball screw nut to detect the rotation feel and noise. It cannot achieve continuous linear, rotational, and helical motions and can only be in an unloaded state. The other is an automatic running-in machine, which runs in the ball screw nut and the spline nut respectively by two servo motors. However, it cannot simulate the actual working conditions to apply load, and it is generally single-station or double-station with a fixed installation structure. Therefore, only the same type of ball screw spline pair can be installed at each station, with poor adaptability and low efficiency.

[0004] In view of this, the utility model provides a high-efficiency four-station ball screw spline pair running-in device to solve the technical problems existing in the above-mentioned prior art. Summary of the Utility Model

[0005] Based on the technical problems existing in the background technique, the utility model proposes a high-efficiency four-station ball screw spline pair running-in device.

[0006] A high-efficiency four-station ball screw spline pair running-in device proposed by the present utility model includes a fixed workbench and a running-in station. The bottom of the fixed workbench is a fixed bottom plate. Four support feet are fixedly connected to the bottom of the fixed bottom plate and placed on the ground. The top of the fixed bottom plate is fixedly connected with a lower column bottom plate. An upper column bottom plate is fixedly connected with a fixed workbench panel. The columns and the upper and lower column bottom plates are connected by four triangular rib plates respectively. The top of the fixed workbench panel is fixedly connected with the support structure bottom plate. Counterbore holes are opened on both sides of the support structure bottom plate. The bottom plate is fixedly connected with support side plates. Threaded holes are opened at the top of the support side plates. The support side plates are fixedly connected with a reducer fixing plate, a nut flange, a servo motor fixing plate and a locking pressure plate. A tension sleeve is installed at the lower end of the screw spline shaft. The tension sleeve is connected with a weight support plate through bolts. Four oblong holes are opened on the weight support plate, and weight weights are connected through bolts to achieve loading under different working conditions.

[0007] Further, the support bottom plate is connected to the fixed workbench through bolts, and is locked and fixed to the fixed workbench by the locking pressure plate fixed on the support side plate through bolts, so as to improve the support rigidity of the support floor.

[0008] Further, the spline pair is driven by a first servo motor, a planetary reducer, a synchronous pulley and a synchronous belt drive, and torque can be applied to the screw spline shaft to realize the rotational movement of the screw spline shaft.

[0009] Further, the ball screw pair is driven by a second servo motor, a synchronous pulley and a synchronous belt drive, and the screw spline shaft can be moved up and down.

[0010] Further, when the second servo motor drives and the first servo motor does not drive, the up and down movement of the screw spline shaft can be realized. When the second servo motor rotates forward and the first servo motor rotates reversely, the rotational movement of the screw spline shaft can be realized. When the second servo motor rotates forward at a faster speed and the first servo motor rotates reversely, the helical movement of the screw spline shaft can be realized.

[0011] Further, the weight support plate is installed at the lower end of the screw spline shaft through a tension sleeve.

[0012] Further, the weight weights are symmetrically fixed under the weight support plate through bolts.

[0013] Compared with the prior art, the present utility model provides a high-efficiency four-station ball screw spline pair running-in device, which has the following beneficial effects:

[0014] The utility model can simultaneously perform the running-in of four different types of ball screw spline pairs by setting four running-in stations and a counterweight device, which improves the running-in efficiency. Moreover, the installation tooling of the ball screw spline pair at each station can be replaced to adapt to different types of ball screw spline pairs, having good adaptability and interchangeability. The counterweight weights can also be selected according to the different load requirements under the actual working conditions of different types of ball screw spline pairs to achieve different working condition loadings. And this device has a simple structure, high efficiency, and convenient operation. Brief Description of the Drawings

[0015] Figure 1 is a schematic diagram of the overall structure of the utility model;

[0016] Figure 2 is a front view of the structure of the first running-in station of the utility model;

[0017] Figure 3 is a top view of the structure of the first running-in station of the utility model;

[0018] In the figure: 1. Fixed workbench; 2. Running-in station; 3. Support feet; 4. Ball screw spline pair body; 5. Support side plate; 6. Reducer fixing plate; 7. Lead screw nut flange fixing plate; 8. Servo motor fixing plate; 9. Locking pressure plate; 10. Expansion sleeve; 11. Counterweight support plate; 12. Counterweight weights; 13. First synchronous belt tensioning fixing plate; 14. Second synchronous belt tensioning fixing plate; 15. Planetary reducer; 16. First servo motor; 17. Second servo motor. Detailed Embodiment

[0019] The following details the embodiments of this patent. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below by referring to the drawings are exemplary and are only used to explain this patent and should not be construed as a limitation to this patent.

[0020] As Figure 1 、 Figure 2 、 Figure 3As shown in the figure, a high-efficiency four-station ball screw spline pair running-in device proposed in an embodiment of the present utility model includes a fixed workbench 1 and a running-in station 2. The bottom of the fixed workbench 1 is a fixed bottom plate, and four support feet 3 are fixedly connected to the bottom of the fixed bottom plate and placed on the ground. The top of the fixed bottom plate is fixedly connected with a lower column bottom plate, and an upper column bottom plate is fixedly connected with a panel of the fixed workbench 1. The columns and the upper and lower column bottom plates are connected by four triangular rib plates respectively. The top of the panel of the fixed workbench 1 is fixedly connected with a support structure bottom plate. Counterbored holes are opened on both sides of the support structure bottom plate, and a support side plate 5 is fixedly connected to the bottom plate. Threaded holes are opened at the top of the support side plate 5, and the support side plate 5 is fixedly connected with a reducer fixing plate 6, a ball screw nut fixing plate, a servo motor fixing plate 8 and a locking pressing plate 9. The reducer fixing plate 6 is connected to the output end of the planetary reducer 15, and the input end of the planetary reducer 15 is connected to the first servo motor 16. The servo motor fixing plate 17 fixes the second servo motor 17 that drives the nut to move. The ball screw nut flange fixing plate fixes the ball screw nut on the ball screw spline pair body 4. The spline nut is fixed on the support bottom plate. A tension sleeve 10 is installed at the lower end of the ball screw spline shaft. The tension sleeve 10 is connected to the weight support plate 11 through bolts. Four oblong holes are opened on the weight support plate 11, and weight weights 12 are connected through bolts to achieve loading under different working conditions. To sum up, when running in ball screw spline pairs of different models, the upper and lower limit positions of the ball screw spline shaft are set through the numerical control system to ensure reciprocating running-in within the limit stroke until the ball screw spline pair runs in to meet the use requirements.

[0021] As Figure 1 shown, in some embodiments, different fixed support plates and ball screw nut fixing plates can be configured for the four stations as needed to meet the installation of ball screw spline pairs of different models. The servo motor drive mechanisms of the four stations can simultaneously achieve independent parallel control of the four stations through the numerical control system, realizing the running-in of four different models of ball screw spline pairs at different strokes and different speeds.

[0022] As Figure 1 shown, in some embodiments, four oblong holes are opened on the weight support plate 11. The installation distance of the weight weights 12 can be selected according to the actual required working conditions. The weight weights 12 can also be replaced according to the different load requirements under the actual working conditions of different models of ball screw spline pairs to achieve loading under different working conditions.

[0023] As Figure 2 and Figure 3 shown, in some embodiments, the installation tooling of the ball screw spline pair at each station can be replaced to adapt to ball screw spline pairs of different models, and different models or the same model of ball screw spline pairs can be installed at each station.

[0024] As Figure 1 、Figure 2 and Figure 3 As shown in Figure 3 , in some embodiments, by controlling the rotation speed and direction of rotation of the first servo motor 16 and the second servo motor 17 through the numerical control system, the up and down movement, rotation and helical movement of the lead screw spline shaft can be achieved, so as to perform running-in for the movement actions required by the actual working conditions.

[0025] The above are only the preferred specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution of the present invention and its inventive concept, makes equivalent substitutions or changes, and all should be covered within the protection scope of the present invention.

Claims

1. A high-efficiency running-in device for a four-station ball screw spline pair, comprising a fixed workbench (1) and a running-in station (2), characterized in that: The bottom of the fixed workbench (1) is a fixed bottom plate. Four support feet (3) are fixedly connected to the bottom of the fixed bottom plate and placed on the ground. The fixed bottom plate is fixedly connected with a bottom plate of the column. The upper bottom plate of the column is fixedly connected with the panel of the fixed workbench (1). The columns and the upper and lower bottom plates of the columns are welded and connected through four triangular rib plates respectively. The top of the panel of the fixed workbench (1) is fixedly connected with the bottom plate of the running-in station (2). A spline nut flange connection hole is opened in the middle of the bottom plate of the running-in station (2). The spline nut of the ball screw spline pair body (4) is connected through bolts. Countersunk holes are opened on both sides of the bottom plate of the running-in station (2), and the bottom plate is fixedly connected with a support side plate (5); threaded holes are opened at the top of the support side plate (5), and a reducer fixing plate (6), a ball screw nut flange fixing plate (7), a servo motor fixing plate (8) and a locking pressing plate (9) are also fixedly connected to the top of the support side plate (5). The ball screw nut of the ball screw spline pair body (4) is connected with the ball screw nut flange fixing plate (7) through bolts.

2. The high-efficiency four-station ball screw spline pair running-in device according to claim 1, characterized in that The support side plate (5) is fixedly connected with a reducer fixing plate (6), a ball screw nut flange fixing plate (7), a servo motor fixing plate (8), a second synchronous belt tensioning fixing plate (14) and a locking pressing plate (9). Threaded holes are opened on the left side surface of the support side plate (5), and a first synchronous belt tensioning fixing plate (13) is fixedly connected to the left side surface of the support side plate (5).

3. The high-efficiency four-station ball screw spline pair running-in device according to claim 1, characterized in that, Waist-shaped long holes are opened on both sides of the reducer fixing plate (6) and connected with the support side plate (5). A threaded hole is opened in the center of the reducer fixing plate (6) and connected with a planetary reducer (15). The input end of the planetary reducer (15) is connected with a first servo motor (16). The output end of the planetary reducer (15) is connected with the spline nut through a synchronous pulley and a synchronous belt.

4. An efficient four-station running-in device for ball screw spline pairs according to claim 3, characterized in that, A threaded hole is opened in the center of the servo motor fixing plate (8). The servo motor fixing plate (8) is connected with a second servo motor (17). The output shaft of the second servo motor (17) is connected with the ball screw nut through a synchronous pulley and a synchronous belt.

5. The high-efficiency four-station ball screw spline pair running-in device according to claim 2, wherein A hole is opened at the center of the side surface of the first synchronous belt tensioning fixing plate (13). The first synchronous belt tensioning fixing plate (13) is connected with the threaded hole on the side surface of the reducer fixing plate (6) through bolts. Matching with the waist-shaped long holes opened on both sides of the reducer fixing plate (6), the tightness of the synchronous belt can be adjusted.

6. The high-efficiency four-station ball screw spline pair running-in device according to claim 2, characterized in that A hole is opened at the center of the side surface of the second synchronous belt tensioning fixing plate (14). The second synchronous belt tensioning fixing plate (14) is connected with the threaded hole on the side surface of the servo motor fixing plate (8) through bolts. Matching with the waist-shaped long holes opened on both sides of the servo motor fixing plate (8), the tightness of the synchronous belt can be adjusted.

7. The high-efficiency four-station ball screw spline pair running-in device according to claim 3, wherein, With the coordinated control and drive of the first servo motor (16) and the second servo motor (17), the up-and-down movement, rotation and spiral movement of the lead screw shaft can be realized.

8. The high-efficiency four-station ball screw spline pair running-in device according to claim 1, characterized in that, A tension sleeve (10) is installed at the lower end of the lead screw shaft of the ball screw spline pair body (4). The tension sleeve (10) is fixed to the lead screw shaft, and the flange of the tension sleeve (10) is connected to the counterweight support plate (11) by bolts. Four oblong holes are formed in the counterweight support plate (11), and the counterweight support plate (11) is connected to the counterweight weights (12) by bolts to achieve loading under different working conditions.

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