Device for testing sliding performance of ball screw

Abstract

The utility model belongs to the field of ball screw testing, and particularly relates to a device for testing the sliding performance of a ball screw, which comprises a base and a clamping and fixing mechanism, a first bearing is arranged at the top of the base, a first rotating shaft is matched in the first bearing, the clamping and fixing mechanism comprises a mounting sleeve, and the mounting sleeve is arranged at the top of the first rotating shaft. A pair of symmetrical L-shaped plates is arranged outside the mounting sleeve, third bearings are arranged at one ends of the L-shaped plates respectively, a connecting rod is arranged between the third bearings, threads are arranged at the two ends of the connecting rod respectively, the directions of the threads are opposite, a rotary knob is arranged at one end of the connecting rod, and L-shaped sliding blocks are matched with the two ends of the connecting rod respectively. According to the utility model, the reverse threaded connecting rod is driven by the knob, so that synchronous and symmetrical movement of the L-shaped sliding block is realized, concentric clamping of the ball screw by the clamping plate is ensured, eccentric or radial movement is avoided, the problem of test data distortion caused by easy eccentric or radial movement in the clamping process is solved, and the test efficiency is improved.

Description

Technical Field

[0001] This utility model relates to the field of ball screw testing, specifically a testing device for the sliding performance of ball screws. Background Technology

[0002] Ball screws are the most precise and commonly used transmission devices in transmission machinery. Their main function is to convert rotary motion into linear motion, or torque into reciprocating shaft force. They are characterized by high precision, reversibility, and high efficiency, and are widely used in industrial equipment and precision instruments. After ball screws are manufactured, their sliding performance needs to be tested using appropriate testing equipment.

[0003] However, conventional clamps are difficult to adapt to screws of different diameters when fixing the lead screw, and eccentricity or radial movement is easily generated during the clamping process, resulting in distorted test data. Therefore, a test device for the sliding performance of ball screws is proposed to address the above problems. Utility Model Content

[0004] To overcome the shortcomings of existing technologies, such as the tendency for eccentricity or radial movement to occur during clamping, which leads to distorted test data, this invention proposes a testing device for the sliding performance of ball screws.

[0005] The technical solution adopted by this utility model to solve its technical problem is: a testing device for the sliding performance of ball screws, including a base and a clamping and fixing mechanism. The top of the base is provided with a first bearing, and the first bearing is fitted with a first rotating shaft. The clamping and fixing mechanism includes a mounting sleeve, which is set on the top of the first rotating shaft. A pair of symmetrical L-shaped plates are provided on the outside of the mounting sleeve. A third bearing is provided on one end of each pair of L-shaped plates. A connecting rod is provided between the pair of third bearings. The two ends of the connecting rod are respectively provided with threads in opposite directions. A knob is provided at one end of the connecting rod. L-shaped sliders are fitted at both ends of the connecting rod. A clamping plate is provided at one end of each of the two L-shaped sliders. Two grooves are opened on the mounting sleeve, and the L-shaped sliders are fitted in the grooves.

[0006] Preferably, a mounting post is provided on one side of the top of the base, a first threaded rod is fitted inside the mounting post, and a drive source is provided on the top of the mounting post, with the output end of the drive source connected to the first threaded rod.

[0007] The first threaded rod is fitted with a slider, one end of which is equipped with a lower pressure plate. The top of the lower pressure plate is fitted with a top shaft, which is located on the same axis as the mounting sleeve. The top of the lower pressure plate is equipped with two electric push rods, which are located on both sides of the top shaft. The output ends of the two electric push rods are respectively equipped with push blocks.

[0008] Preferably, a ball screw is provided between the top shaft and the mounting sleeve.

[0009] Preferably, a first pulley is provided on the outside of the first rotating shaft, a second bearing is provided on the top of the base, a second rotating shaft is provided inside the second bearing, a second pulley is provided on the outside of the second rotating shaft, and a belt is provided between the second pulley and the first pulley.

[0010] Preferably, an identification block is provided on the top side of the second rotating shaft.

[0011] Preferably, the base has a support rod on top, a connecting block on one side of the support rod, and a receiving sensor at one end of the connecting block.

[0012] Preferably, the base has a display screen on top.

[0013] Preferably, the display screen and the receiving sensor are electrically connected.

[0014] The advantages of this utility model are:

[0015] 1. This utility model uses a knob to drive a reverse threaded connecting rod to achieve synchronous and symmetrical movement of the L-shaped slider, ensuring that the clamping plate concentrically clamps the ball screw, avoiding eccentricity or radial movement, solving the problem of eccentricity or radial movement during clamping that leads to distorted test data, and improving test efficiency.

[0016] 2. This utility model enhances the linear motion accuracy during the clamping process by using an L-shaped slider in conjunction with a sliding groove, and is suitable for the rapid fixing of lead screws of different diameters. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0019] Figure 2 This is a schematic diagram of the internal structure of the testing device of this utility model;

[0020] Figure 3 This is a schematic diagram of the slider and the first threaded rod structure of this utility model;

[0021] Figure 4 This is a schematic diagram of the clamping and fixing mechanism of this utility model.

[0022] In the diagram: 1. Base; 101. First bearing; 102. Second bearing; 2. Mounting column; 201. First threaded rod; 3. Drive source; 4. Lower pressure plate; 401. Electric actuator; 402. Push block; 403. Top shaft; 404. Slider; 5. Ball screw; 6. First rotating shaft; 7. First pulley; 8. Clamping and fixing mechanism; 801. Mounting sleeve; 802. L-shaped plate; 803. Third bearing; 804. Connecting rod; 805. Knob; 806. L-shaped slider; 807. Clamping plate; 808. Slide groove; 9. Belt; 10. Second rotating shaft; 11. Second pulley; 12. Identification block; 13. Support rod; 14. Connecting block; 15. Receiving sensor; 16. Display screen. Detailed Implementation

[0023] 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 scope of protection of the present utility model.

[0024] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0025] This application discloses a testing device for the sliding performance of ball screws. (Refer to...) Figure 2 and Figure 4A testing device for the sliding performance of ball screws includes a base 1 and a clamping and fixing mechanism 8. The base 1 serves as a support platform for the entire device, ensuring structural stability. A first bearing 101 is provided on the top of the base 1, and a first rotating shaft 6 is fitted inside the first bearing 101. The first bearing 101 is used to mount the first rotating shaft 6 and provides low-friction rotational support. The clamping and fixing mechanism 8 includes a mounting sleeve 801, which is disposed on the top of the first rotating shaft 6 and fixed to the top of the first rotating shaft, serving as a base for the clamping mechanism. A pair of symmetrical L-shaped plates 802 are provided on the outside of the mounting sleeve 801, and a third bearing 803 is respectively provided on one end of the pair of L-shaped plates 802. A connecting rod 804 is provided between the three bearings 803. The L-shaped plate 802 and the third bearing 803 support the connecting rod 804 to realize bidirectional threaded transmission. The two ends of the connecting rod 804 are respectively provided with threads in opposite directions. One end of the connecting rod 804 is provided with a knob 805. The connecting rod 804 and the knob 805 drive the two L-shaped sliders 806 on both sides to move closer or further away synchronously by rotation. The two ends of the connecting rod 804 are respectively fitted with L-shaped sliders 806. One end of each of the two L-shaped sliders 806 is provided with a clamping plate 807. Two sliding grooves 808 are opened on the mounting sleeve 801. The L-shaped sliders 806 are fitted in the sliding grooves 808, and the sliding grooves 808 provide guidance. The clamping plates 807 clamp the ball screw 5.

[0026] The reverse threaded connecting rod 804 is driven by knob 805 to achieve synchronous and symmetrical movement of L-shaped slider 806, ensuring that clamping plate 807 concentrically clamps ball screw 5, avoiding eccentricity or radial movement, solving the problem of eccentricity or radial movement during clamping that leads to distorted test data, and improving test efficiency; the L-shaped slider 806 cooperates with slide groove 808 to enhance the linear motion accuracy during clamping, and is suitable for quick fixing of screws of different diameters.

[0027] Reference Figure 1 , Figure 2 and Figure 3 The base 1 has a mounting post 2 on one side of the top. The mounting post 2 has a first threaded rod 201 inside it. The first threaded rod 201 is mounted on the mounting post 2 through a fifth bearing. The top of the mounting post 2 has a drive source 3. The output end of the drive source 3 is connected to the first threaded rod 201. The drive source 3 provides axial power.

[0028] A slider 404 is fitted on the first threaded rod 201. The first threaded rod 201 controls the lifting and lowering of the lower pressure plate 4. The lower pressure plate 4 is provided at one end of the slider 404. The top of the lower pressure plate 4 is fitted with a top shaft 403. The top shaft 403 is mounted on the lower pressure plate 4 through a fourth bearing. The top shaft 403 and the mounting sleeve 801 are located on the same axis. Two electric push rods 401 are provided on the top of the lower pressure plate 4. The two electric push rods 401 are located on both sides of the top shaft 403. The output ends of the two electric push rods 401 are respectively provided with push blocks 402.

[0029] Reference Figure 1 and Figure 2 A ball screw 5 is provided between the top shaft 403 and the mounting sleeve 801. The top shaft 403 contacts the ball screw 5 to transmit axial force.

[0030] Reference Figure 1 and Figure 2 The first rotating shaft 6 is provided with a first pulley 7 on its outside, the base 1 is provided with a second bearing 102 on its top, the second rotating shaft 10 is provided inside the second bearing 102, the second rotating shaft 10 is provided with a second pulley 11 on its outside, and a belt 9 is provided between the second pulley 11 and the first pulley 7. The first rotating shaft is rotated and transmitted to the second rotating shaft 10 by the action of the first pulley 7, the second pulley 11 and the belt 9.

[0031] Reference Figure 1 and Figure 2 The top side of the second rotating shaft 10 is provided with an identification block 12.

[0032] Reference Figure 1 and Figure 2 The base 1 has a support rod 13 on its top, a connecting block 14 on one side of the support rod 13, and a receiving sensor 15 at one end of the connecting block 14. The identification block 12 and the receiving sensor 15 monitor the rotation speed and vibration signal of the second rotating shaft 10.

[0033] Reference Figure 1 and Figure 2 The top of the base 1 is equipped with a display screen 16, which displays test data in real time.

[0034] Reference Figure 1 and Figure 2 The display screen 16 is electrically connected to the receiving sensor 15.

[0035] Working principle: By placing one end of the ball screw 5 in the mounting sleeve 801, and then rotating the knob 805 to drive the connecting rod 804 to rotate, the L-shaped slider 806 moves on the connecting rod 804 and the groove 808, causing the clamping plate 807 to move closer to the ball screw 5 for clamping. Then, the drive source 3 drives the first threaded rod 201 to rotate, causing the electric push rod 401 to move downward, driving the lower pressure plate 4 and the top shaft 403 to move downward, so that the top shaft 403 contacts the ball screw 5, transmitting axial force for clamping. Then, the electric push rod 401 drives the push block 402 to move, pushing the ball nut on the ball screw 5. The vertical external force on the ball nut causes the ball screw body to... The rotation of the ball screw causes the ball nut to move linearly downwards. The rotation of the ball screw body drives the top shaft 403 and the first rotating shaft 6 to rotate, which in turn drives the first pulley 7 to rotate. The rotation is accelerated and transmitted to the second pulley 11 via the belt 9. The second pulley 11 drives the second rotating shaft 10 to rotate. The rotation of the second pulley 11 on the second rotating shaft 10 provides a signal source. The sensor 15 detects the rotation of the identification block 12. The faster the identification block 12 rotates, the higher the accuracy of the ball screw 5. The corresponding data is fed back in real time, which can quickly and accurately test the sliding performance of the ball screw 5. The data is converted into preload and smoothness data curves through calculation, displayed on the display screen 16 and compared with the standard to indicate whether it is qualified or not.

[0036] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A testing device for the sliding performance of ball screws, comprising a base (1) and a clamping and fixing mechanism (8), characterized in that: The base (1) is provided with a first bearing (101) at the top, and a first rotating shaft (6) is fitted inside the first bearing (101). The clamping and fixing mechanism (8) includes a mounting sleeve (801), which is disposed on the top of the first rotating shaft (6); The mounting sleeve (801) has a pair of symmetrical L-shaped plates (802) on its outside. A third bearing (803) is provided on one end of each pair of L-shaped plates (802). A connecting rod (804) is provided between the pair of third bearings (803). The two ends of the connecting rod (804) are respectively threaded, and the threads are in opposite directions. A knob (805) is provided at one end of the connecting rod (804); The connecting rod (804) is fitted with L-shaped sliders (806) at both ends. Each of the two L-shaped sliders (806) has a clamp (807) at one end. The mounting sleeve (801) has two grooves (808) and the L-shaped sliders (806) fit into the grooves (808).

2. The testing device for the sliding performance of a ball screw according to claim 1, characterized in that: The base (1) has a mounting post (2) on one side of its top. The mounting post (2) is fitted with a first threaded rod (201). The top of the mounting post (2) is provided with a drive source (3). The output end of the drive source (3) is connected to the first threaded rod (201). The first threaded rod (201) is fitted with a slider (404), one end of which is provided with a lower pressure plate (4), and the top of the lower pressure plate (4) is fitted with a top shaft (403). The top shaft (403) and the mounting sleeve (801) are located on the same axis. The top of the lower pressure plate (4) is provided with two electric push rods (401), which are located on both sides of the top shaft (403). The output ends of the two electric push rods (401) are respectively provided with push blocks (402).

3. The testing device for the sliding performance of a ball screw according to claim 2, characterized in that: A ball screw (5) is provided between the top shaft (403) and the mounting sleeve (801).

4. The testing device for the sliding performance of a ball screw according to claim 1, characterized in that: The first rotating shaft (6) is provided with a first pulley (7) on the outside, the base (1) is provided with a second bearing (102) on the top, the second bearing (102) is provided with a second rotating shaft (10) inside, the second rotating shaft (10) is provided with a second pulley (11) on the outside, and a belt (9) is provided between the second pulley (11) and the first pulley (7).

5. The device for testing the sliding performance of a ball screw according to claim 4, wherein: The second rotating shaft (10) has an identification block (12) on its top side.

6. The testing device for the sliding performance of a ball screw according to claim 1, wherein: The base (1) has a support rod (13) on its top, a connecting block (14) on one side of the support rod (13), and a receiving sensor (15) at one end of the connecting block (14).

7. The testing device for the sliding performance of a ball screw according to claim 6, characterized in that: The base (1) is equipped with a display screen (16) on its top.

8. The testing device for the sliding performance of ball screws according to claim 7, characterized in that: The display screen (16) is electrically connected to the receiving sensor (15).

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