Detection device for detecting noise of ball screw

Abstract

A detection device for detecting noise of a ball screw comprises a sound insulation chamber and a base arranged in the sound insulation chamber, a sliding rail and a sliding block slidably mounted on the sliding rail are mounted on the base, and a driving device for driving the ball screw to rotate and driving a nut of the ball screw to slide on the base is mounted on the base. And a decibel meter for detecting noise generated when the ball screw rotates and the ball screw nut moves is arranged in the sound insulation chamber. According to the utility model, through the arrangement of the positioning seat, the driving motor, the coupling, the driving spring chuck and the ball screw are ensured to be located at the same axis, and the ball screw does not need to be calibrated subsequently, so that the detection efficiency is improved; meanwhile, a ball screw clamping device capable of sliding on the sliding rail is arranged on the sliding rail, so that the detection device can detect ball screws with different lengths, and a fixing seat slidably mounted on the sliding rail can clamp and mount ball screw nuts with different sizes, so that the practicability of the device is improved; and meanwhile, the detection device is mounted in the sound insulation chamber, so that the detection accuracy is improved.

Description

Technical Field

[0001] The utility model relates to the field of ball screw detection equipment, in particular to a detection device for detecting ball screw noise. Background Art

[0002] Ball screws are the most commonly used transmission elements in tool machinery and precision machinery. Their main function is to convert rotational motion into linear motion, or torque into axial repetitive force, while having the characteristics of high precision, reversibility and high efficiency. Due to their small friction resistance, ball screws are widely used in various industrial equipment and precision instruments. The quality of the ball screws they are equipped with directly determines the transmission efficiency and stability of the ball screws.

[0003] At present, noise detection is usually carried out after the ball screw and ball screw nut are assembled. Noise detection can determine whether there are foreign objects in the ball screw nut, whether the size and number of steel balls inside the ball screw nut meet the requirements, and whether the slenderness ratio and concentricity of the ball screw meet the standards. The above problems will cause additional noise in the operation of the ball screw and ball screw nut. The ball screw and ball screw nut have different sizes. Different devices need to be used when testing ball screws and ball screw nuts of different sizes, which greatly increases the detection cost. In addition, the detection device usually has a certain volume, and a variety of detection equipment will also take up a lot of space, further increasing the detection cost. Utility Model Content

[0004] The utility model aims to solve the problems existing in the prior art. The detection device for detecting the noise of a ball screw is designed to detect ball screws and ball screw nuts of different sizes.

[0005] The utility model adopts a technical solution to solve its technical problems: a detection device for detecting ball screw noise, comprising a soundproof chamber and a base arranged in the soundproof chamber, a slide rail and a slider slidably installed on the slide rail are installed on the base, a driving device for driving the ball screw to rotate and driving the ball screw nut to slide on the base is installed on the base, and a detection device for detecting the noise generated when the ball screw rotates and the ball screw nut moves is arranged in the soundproof chamber.

[0006] For further improvement, the driving device includes a driving motor, a coupling fixedly connected to the output shaft of the driving motor, and the other end of the coupling is connected to a driving spring chuck, which can clamp and fix one end of the ball screw and drive the ball screw to rotate. The provision of the spring chuck enables one driving motor to drive multiple ball screws to rotate, thereby improving the practicality of the device.

[0007] For further improvement, a positioning seat is installed on the base to make the drive motor, coupling, drive spring chuck and ball screw on the same axis. The positioning seat can ensure that the ball screw can be installed in the correct position after replacing the ball screw, preventing detection errors caused by inaccurate installation of the ball screw.

[0008] To be further improved, the bottom of the positioning seat is provided with a mounting surface fixedly connected to the drive motor, the mounting surface is provided with a motor hole for setting the output shaft of the drive motor inside the positioning seat, the positioning seat is provided with a coupling accommodating space for accommodating the coupling, and the positioning seat is provided with a connecting hole which is located on the same axis as the motor hole and assists the drive spring clamp in connecting with the coupling.

[0009] For further improvement, a pair of slide blocks are fixedly mounted with a ball screw clamping device that can slide on the slide rail and clamp the other end of the ball screws of different lengths. The ball screw clamping device can ensure that the ball screw is in a straight state and will not bend to affect the detection.

[0010] Further improvement, the ball screw clamping device includes a fixed seat fixedly mounted on the slider, and an adjustable spring chuck fixedly mounted on the fixed seat and clamping one end of the ball screw to the mounting seat. The adjustable spring chuck installed on the fixed seat can clamp and install ball screws of different sizes, thereby improving the practicality of the device.

[0011] Further improvement, the fixed seat includes a connection part fixedly connected to the inside of a pair of sliders, a fixing hole for assisting the adjustment spring chuck to be fixedly installed on the fixed seat is provided between the connection parts, and an adjustment fixing piece for fixing the adjustment spring chuck on the fixed seat is provided on the side of the fixing hole away from the adjustment spring chuck. The provision of the adjustment fixing piece enables the adjustment spring chuck to be stably installed on the fixed seat.

[0012] Further improvement, a mounting seat is provided between the ball screw clamping device and the driving device, which is slidably mounted on the slide rail and can detachably mount ball screw nuts of different sizes. The detachable mounting seat allows the detection device to install and detect ball screw nuts of different sizes, thereby improving the practicality of the device.

[0013] For further improvement, the mounting seat can be detachably mounted on the slider, and the mounting seat includes a base plate mounted on the slider, a pair of positioning blocks arranged on the base plate, a pair of positioning blocks equipped with a ball screw nut clamping device for clamping the ball screw nut, and a ball screw nut accommodating space for accommodating the ball screw nut is provided between the pair of positioning blocks.

[0014] For further improvement, the ball screw nut clamping device is arranged on the inner side of the positioning block and is a clip that can extend inwardly, and the positioning block is provided with a driving rod that can drive the clip to extend inwardly.

[0015] The beneficial effects of the utility model are as follows: the utility model ensures that the drive motor, the coupling, the drive spring chuck and the ball screw are located on the same axis by providing a positioning seat, and there is no need to subsequently calibrate the ball screw, thereby improving the detection efficiency. At the same time, a ball screw clamping device that can slide on the slide rail is provided on the slide rail, so that the detection device can detect ball screws of different lengths, and the fixed seat slidably installed on the slide rail can clamp and install ball screw nuts of different sizes, thereby improving the practicability of the device. At the same time, the detection device is installed inside the soundproof room, which improves the accuracy of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a top view of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the soundproof room;

[0018] Figure 3 is a cross-sectional view of the soundproof room;

[0019] Figure 4 The schematic diagram of the drive device is as follows:

[0020] Figure 5 It is a structural schematic diagram of a fixed seat;

[0021] Figure 6 It is a structural schematic diagram of the positioning seat;

[0022] Figure 7 is a schematic diagram of the structure of the mounting base;

[0023] Figure 8 for Figure 1 A magnified view of part A;

[0024] Fig. 9 for Figure 1 Magnified view of part B.

[0025] Explanation of the accompanying drawings: soundproof chamber 1, base 2, slide rail 3, slider 4, drive device 5, decibel meter 6, drive motor 7, coupling 8, drive spring chuck 9, positioning seat 10, mounting surface 11, motor hole 12, coupling accommodating space 13, connecting hole 14, ball screw clamping device 15, fixed seat 16, adjusting spring chuck 17, connecting part 18, fixing hole 19, adjusting fixture 20, mounting seat 21, bottom plate 22, positioning block 23, ball screw nut clamping device 24, nut accommodating space 25, clip 26, drive rod 27, drive fixture 28. DETAILED DESCRIPTION

[0026] The utility model is further described below in conjunction with the drawings and specific embodiments of the specification. A person of ordinary skill in the art will be able to implement the utility model based on these descriptions. In addition, the embodiments of the utility model involved in the following description are usually only embodiments of a part of the utility model, rather than all of the embodiments. Therefore, based on the embodiments in the utility model, all other embodiments obtained by a person of ordinary skill in the art without making creative work should fall within the scope of protection of the utility model.

[0027] Reference Figure 3 A detection device for detecting ball screw noise, comprising a soundproof chamber 1 and a base 2 arranged in the soundproof chamber 1, a slider 4 and a slider 4 slidably installed on a slide rail 3 are installed on the base 2, a driving device 5 for driving the ball screw to rotate and driving the ball screw nut to slide on the base 2 is installed on the base 2, and a decibel meter 6 for detecting the noise generated when the ball screw rotates and the ball screw nut moves is arranged in the soundproof chamber 1.

[0028] Refer to the accompanying drawings: 4, the driving device 5 includes a driving motor 7, a coupling 8 fixedly connected to the output shaft of the driving motor 7, the other end of the coupling 8 is connected to a driving spring chuck 9, the driving spring chuck 9 can clamp and fix one end of the ball screw and drive the ball screw to rotate, and a positioning seat 10 is installed on the base 2 so that the driving motor 7, the coupling 8, the driving spring chuck 9 and the ball screw are located on the same axis. The positioning seat 10 can ensure that the driving motor 7, the coupling 8, the driving spring chuck 9 and the ball screw are located on the same axis. When installing the ball screw, it is only necessary to fix the ball screw through the driving spring chuck 9, without the need for additional calibration procedures, which greatly improves the detection efficiency.

[0029] In order to enable the positioning seat 10 to ensure that the drive motor 7, the coupling 8, the drive spring chuck 9 and the ball screw are located on the same axis, the positioning seat 10 is designed as the following structure: a mounting surface 11 fixedly connected to the drive motor 7 is provided at the bottom of the positioning seat 10, and a motor hole 12 for setting the output shaft of the drive motor 7 inside the positioning seat 10 is provided on the mounting surface 11. A coupling accommodating space 13 for accommodating the coupling 8 is provided inside the positioning seat 10. A connecting hole 14 is provided on the top of the positioning seat 10, which is located on the same axis as the motor hole 12 and assists in connecting the drive spring chuck 9 to the coupling 8. Specifically, refer to the attached Figure 1 : The right side of the driving spring chuck 9 is clamped and installed for the ball screw, and the left side of the driving spring chuck is provided with a fixed shaft protruding from the driving spring chuck 9, the fixed shaft is installed inside the connecting hole 14 and protrudes from the connecting hole 14, and the part of the fixed shaft protruding from the connecting hole 14 is installed with a driving fixing member 28 which assists the fixed shaft in fixing the connecting hole 14. Specifically, refer to the attached Figure 8The driving fixing part 28 is a nut sleeved on the fixed shaft, and a hole penetrating the nut is opened on the nut, and a threaded hole matching the hole on the nut is opened on the fixed shaft. The opening is aligned with the threaded hole and a screw is screwed in, and the driving spring chuck 9 can be stably installed in the positioning seat 10.

[0030] Since the ball screw is a metal rod with a certain length, when the ball screw is installed on the positioning seat 10 in a horizontal state, the side of the ball screw away from the positioning seat 10 will sink to a certain extent. When the ball screw is not in a straight line, the ball screw nut driven to move by the rotation of the ball screw will generate additional noise, which will cause errors in detection. In order to improve the accuracy of detection, a ball screw clamping device 15 is fixedly installed on a pair of sliders 4, which can slide on the slide rail 3 and clamp the other end of the ball screw of different lengths. The ball screw is ensured to be in a straight line by clamping the other end of the ball screw. The ball screw clamping device 15 includes a fixed seat 16 fixedly installed on the slider 4, and a fixed seat 16 fixedly installed on the fixed seat 16 and clamping the ball screw. An adjusting spring chuck 17 is clamped and installed at one end of the screw, wherein the fixed seat 16 includes a connecting portion 18 fixedly connected to the inner side of a pair of sliders 4, and a fixing port 19 is provided between the connecting portions 18 to assist the adjusting spring chuck 17 in being fixedly installed on the fixed seat 16, and an adjusting fixing piece 20 is provided on the side of the fixing port 19 away from the adjusting spring chuck 17 to fix the adjusting spring chuck 17 on the fixed seat 16. The specific connection method between the adjusting spring chuck 17 and the fixed seat 16 and the structure of the adjusting spring chuck 17 can refer to the connection method between the above-mentioned positioning seat 10 and the driving spring chuck 9 and the structure of the chuck of the driving spring chuck 9, and the specific structure and installation method of the adjusting fixing piece 20 can refer to the specific structure and installation method of the above-mentioned driving fixing piece 28.

[0031] Since the detection device can detect ball screws of different sizes, and ball screws of different sizes have corresponding ball screw nuts of different sizes, in order to be able to detect ball screws and ball screw nuts of different sizes, a mounting seat 21 is provided between the ball screw clamping device 15 and the driving device 5, which is slidably mounted on the slide rail 3 and can detachably mount ball screw nuts of different sizes, wherein the mounting seat 21 is detachably mounted on the slider 4, the mounting seat 21 includes a base plate 22 mounted on the slider 4, a pair of positioning blocks 23 arranged on the base plate 22, and a ball screw nut clamping device 24 for clamping the ball screw nut is installed on the pair of positioning blocks 23, a ball screw nut accommodating space 25 for accommodating the ball screw nut is provided between the pair of positioning blocks 23, the ball screw nut clamping device 24 includes a clip 26 arranged on the inner side of the positioning block 23 and can extend inwardly, since the ball screw nut is usually arranged in a cylindrical shape, refer to the attached Figure 6: In this embodiment, the clip 26 is set to an arc shape that matches the outer surface shape of the ball screw nut, so that the clip 26 can fit tightly with the outer surface of the ball screw nut, thereby improving the stability of the installation of the ball screw nut. The positioning block 23 is provided with a driving rod 27 that can drive the clip 26 to extend inward and clamp the ball screw nut.

[0032] Certain words are used in the specification and claims of this utility model to refer to specific products. It should be understood by those with ordinary knowledge in the art that manufacturers may refer to the same components by different names. This document does not intend to distinguish between components that have the same function but different names. In the following specification and patent scope, the words "comprise", "have" and "include" are open-ended words and should be interpreted as "including but not limited to...".

[0033] The above are preferred implementations of the present utility model. It should be pointed out that, for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principle of the present utility model. These improvements and modifications are also considered to be within the protection scope of the present utility model.

Claims

1. A detection device for detecting ball screw noise, comprising a soundproof chamber (1) and a base (2) arranged in the soundproof chamber (1), a slide rail (3) and a slider (4) slidably mounted on the slide rail (3) being mounted on the base (2), characterized in that: A driving device (5) is installed on the base (2) for driving the ball screw to rotate and the ball screw nut to slide on the base (2), and a decibel meter is provided in the soundproof room (1) for detecting the noise generated when the ball screw rotates and the ball screw nut moves.

2. A detection device for detecting ball screw noise according to claim 1, characterized in that: The driving device (5) comprises a driving motor (7), a coupling (8) fixedly connected to an output shaft of the driving motor (7), the other end of the coupling (8) being connected to a driving spring chuck (9), the driving spring chuck (9) being capable of clamping and fixing one end of a ball screw and driving the ball screw to rotate.

3. A detection device for detecting ball screw noise according to claim 2, characterized in that: The base (2) is provided with a positioning seat (10) which enables the driving motor (7), the coupling (8), the driving spring chuck (9) and the ball screw to be located on the same axis.

4. A detection device for detecting ball screw noise according to claim 3, characterized in that: The bottom of the positioning seat (10) is provided with a mounting surface (11) fixedly connected to the drive motor (7); the mounting surface (11) is provided with a motor hole (12) for arranging the output shaft of the drive motor (7) inside the positioning seat (10); the positioning seat (10) is provided with a coupling accommodating space (13) for accommodating the coupling (8); the top of the positioning seat (10) is provided with a connecting hole (14) which is coaxial with the motor hole (12) and assists in connecting the drive spring clamp (9) to the coupling (8).

5. The detection device for detecting ball screw noise according to claim 1, characterized in that: A ball screw clamping device (15) is fixedly mounted on the pair of slide blocks (4) and is capable of sliding on the slide rail (3) and clamping the other end of the ball screws of different lengths.

6. A detection device for detecting ball screw noise according to claim 5, characterized in that: The ball screw clamping device (15) comprises a fixing seat (16) fixedly mounted on the slider (4), and an adjusting spring chuck (17) fixedly mounted on the fixing seat (16) and clamping one end of the ball screw.

7. A detection device for detecting ball screw noise according to claim 6, characterized in that: The fixing seat (16) comprises a connecting portion (18) fixedly connected to the inner side of a pair of sliders (4), a fixing hole (19) for fixing the auxiliary adjustment spring clamp (17) on the fixing seat (16) is provided between the connecting portions (18), and an adjustment fixing member (20) for fixing the adjustment spring clamp (17) on the fixing seat (16) is provided on a side of the fixing hole (19) away from the adjustment spring clamp (17).

8. The detection device for detecting ball screw noise according to claim 5, characterized in that: A mounting seat (21) is provided between the ball screw clamping device (15) and the driving device (5), which is slidably mounted on the slide rail (3) and can be used to disassemble and install ball screw nuts of different sizes.

9. A detection device for detecting ball screw noise according to claim 8, characterized in that: The mounting seat (21) is detachably mounted on the slider (4), and comprises a base plate (22) mounted on the slider (4), a pair of positioning blocks (23) arranged on the base plate (22), a pair of positioning blocks (23) having ball screw nut clamping devices (24) mounted on them for clamping the ball screw nut, and a nut accommodating space (25) for accommodating the ball screw nut provided between the pair of positioning blocks (23).

10. A detection device for detecting ball screw noise according to claim 9, characterized in that: The ball screw nut clamping device (24) comprises a clamping piece (26) arranged on the inner side of the positioning block (23) and capable of extending inwardly, and a driving rod (27) is arranged on the positioning block (23) and capable of driving the clamping piece (26) to extend inwardly and clamp the ball screw nut.

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