A device for online detection of the basic dimensions of a rolling ball screw

Abstract

The application discloses a device for detecting the basic size of a rolling ball screw online, which takes a marble base as a bearing body, and linear modules and a detection module are fixed on the base. The detection module is divided into upper and lower modules, and is driven by a linear module to realize up-and-down movement. The detection module is internally provided with an angle sensor and a distance sensor to realize the detection of parameters of the ball screw. Springs are internally arranged in the upper and lower detection modules, so that the detection module can be closely attached to a screw rod raceway, and the error caused by the vibration of the screw rod is reduced. Screw rod positioning mechanisms are arranged on the two sides of the base to further fix the screw rod, reduce the vibration of the screw rod and improve the detection precision. When the screw rod is in the screw rod positioning mechanism, the linear module drives the upper and lower detection modules to move up and down, so that the detection module is closely attached to the screw rod, and a measuring column in the detection module is automatically embedded in the raceway under the rotation of the raceway of the screw rod. The device has the characteristics of high precision, high automation and continuous measurement, and is suitable for the detection of the nominal diameter, the major diameter, the pitch and the helix angle of the screw rod.

Description

Technical Field

[0001] This invention belongs to the field of ball screw testing technology, and in particular, it is a testing device for online testing of the basic dimensions of rolled ball screws. Background Technology

[0002] Nominal diameter, major diameter, pitch, and helix angle are important parameters of ball screws, and testing of rolled screws is necessary.

[0003] Currently, the production of lead screws lacks equipment for online detection of the screw's basic parameters, making real-time monitoring of these parameters essential. During the rolling process, the screw's parameters can change due to factors such as roll wear and alterations in deflection angle, resulting in variations that are difficult to observe with the naked eye. Currently, most equipment relies on static monitoring, with very few devices capable of online detection of rolled lead screws. Summary of the Invention

[0004] The purpose of this invention is to address the difficulty of online inspection of rolled ball screws by providing an online inspection device for the basic dimensions of rolled ball screws.

[0005] The technical solution to achieve the purpose of this invention is as follows: an online detection device for the basic dimensions of rolled ball screws, comprising two linear modules, an upper detection module, a pair of rolled ball screw positioning mechanisms, a lower detection module, two linear module positioning mechanisms, a marble bed, two servo motor systems, two motor-to-linear module connection blocks, and a detection module positioning frame; the linear module positioning mechanism, the detection module positioning frame, and the linear module positioning mechanism are sequentially installed on the upper surface of the marble bed from left to right; the two linear modules are respectively installed on the two linear module positioning mechanisms; the two servo motor systems are respectively connected to one linear module positioning mechanism through one motor-to-linear module connection block; the upper and lower detection modules are used for online detection of the basic dimensions of rolled ball screws, positioned within the detection module positioning frame, and respectively connected to the two linear modules; the pair of rolled ball screw positioning mechanisms are installed on the front and rear sides of the marble bed for positioning the rolled ball screw to be detected and ensuring that it is within the detection module positioning frame;

[0006] When the ball screw to be tested is in a pair of ball screw positioning mechanisms, two servo motor systems drive two linear modules respectively, causing the upper detection module to move downward linearly and the lower detection module to move upward linearly. The upper and lower detection modules contact the ball screw to be tested and measure its basic dimensions. When the ball screw to be tested leaves one of the ball screw positioning mechanisms, the two servo motor systems drive two linear modules respectively, causing the upper detection module to move upward linearly and the lower detection module to move downward linearly, so that the detection module separates from the ball screw to be tested.

[0007] Furthermore, the upper detection module includes an upper baffle, a first spring, an upper positioning block, a first limiting plate, an angle sensor, an end cap, an upper turntable, and a first measuring column; the lower detection module includes a lower turntable, a lower positioning block, a lower baffle, a second spring, a second limiting plate, a second measuring column, and a distance sensor.

[0008] The upper baffle and the upper positioning block are installed in slots on the positioning frame of the detection module at both ends, allowing them to move linearly along the vertical direction of the positioning frame. The upper baffle and the upper positioning block are connected by a first spring. The two ends of the first limiting plate are respectively installed on the upper baffle and the upper positioning block to limit the maximum distance between them. The upper turntable is mounted on the upper positioning block and is rotatable. An angle sensor is mounted on the upper turntable to detect the rotation angle of the turntable. The end cap is mounted on the upper positioning block to prevent the turntable from moving up and down. The first measuring column is positioned on the upper turntable. When the detection equipment is working, the first measuring column is positioned in the raceway under the rotation of the ball screw to be tested.

[0009] The lower positioning block and the lower baffle are installed in slots on the positioning frame of the detection module at both ends, and can move linearly along the vertical direction of the positioning frame of the detection module. The lower positioning block and the lower baffle are connected by a second spring, and the two ends of the second limiting plate are respectively installed on the lower positioning block and the lower baffle to limit the maximum distance between the lower positioning block and the lower baffle. The lower turntable is installed on the lower positioning block and can rotate. The distance sensor is installed on the side of the lower turntable to measure the distance between the upper positioning block and the lower positioning block. The second measuring column is positioned on the lower turntable. When the detection equipment is working, the second measuring column is positioned in the raceway under the drive of the rotation of the ball screw to be tested.

[0010] The detection method based on the above-mentioned equipment includes the following steps:

[0011] Step 1: When the ball screw to be tested passes through a pair of ball screw positioning mechanisms, the servo motor system drives the linear module to move linearly, causing the upper detection module to move downward and the lower detection module to move upward, so that the spring is deformed and the measuring column is in close contact with the ball screw to be tested.

[0012] Step 2: Driven by the rotation of the lead screw, the measuring column is positioned in the raceway. The distance sensor detects the nominal diameter and major diameter of the rolling ball screw in real time, and the angle sensor measures the helix angle of the rolling ball screw in real time, thereby measuring the pitch.

[0013] Step 3: When the tested rolling screw leaves a certain rolling ball screw positioning mechanism, the servo motor system drives the linear module to make linear motion, which drives the upper detection module to move upward and the lower detection module to move downward, so that the detection module separates from the rolling ball screw.

[0014] Compared with the prior art, the significant advantages of this invention are:

[0015] 1) The equipment of the present invention has high detection accuracy, high efficiency and high degree of automation, and is suitable for online detection of rolling screws.

[0016] 2) The equipment of the present invention can avoid changes in screw parameters due to wear of the rolls and changes in deflection angle, and can detect the parameters of the rolling screw in a timely manner.

[0017] The present invention will now be described in further detail with reference to the accompanying drawings. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the overall structure of a testing device for online detection of the basic dimensions of a ball screw in one embodiment.

[0019] Figure 2 This is a schematic diagram of the overall structure of a testing device for online detection of the basic dimensions of a ball screw in one embodiment; wherein... Figure 2 (a) is the front view of the testing equipment. Figure 2 (b) is a top view of the testing equipment. Figure 2 (c) is the left view of the testing equipment.

[0020] Figure 3 This is a schematic diagram of the overall structure of the detection module in one embodiment; wherein Figure 3 (a) Front view Figure 3 (b) is a sectional view.

[0021] Figure 4 This is a schematic diagram of the overall structure of the lower detection module in one embodiment; wherein Figure 4 (a) Front view Figure 4 (b) is a sectional view. Figure 4 (c) is the left view.

[0022] Figure 5 This is a schematic diagram of a linear module of a detection device in one embodiment; wherein, 5(a) is a left view of the linear module. Figure 5 (b) is the right view of the linear module. Figure 5 (c) is the main view of the linear module. Figure 5 (d) is a top view of the linear module. Figure 5 (e) is the bottom view of the linear module.

[0023] Figure 6 This is a schematic diagram of a linear module positioning component in one embodiment; wherein Figure 6 (a) Front view Figure 6 (b) Main view Figure 6 (c) Main view.

[0024] Figure 7 This is a schematic diagram of the positioning frame of the detection module in one embodiment.

[0025] Figure 8 This is a schematic diagram of a rolling ball screw positioning mechanism in one embodiment. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of this application clearer, the following detailed description is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific implementations described herein are merely illustrative and not intended to limit the scope of this application.

[0027] It should be noted that if the embodiments of the present invention involve directional indicators (such as up, down, left, right, front, back, etc.), the directional indicators are only used to explain the relative positional relationship and movement of the components in a certain specific posture (as shown in the figure). If the specific posture changes, the directional indicators will also change accordingly.

[0028] In one embodiment, combined Figures 1 to 2 and Figures 5 to 7 This invention provides an online detection device for the basic dimensions of rolled ball screws. The device includes two linear modules 1, an upper detection module 2, a pair of rolled ball screw positioning mechanisms 3, a lower detection module 4, two linear module positioning mechanisms 5, a marble bed 6, two servo motor systems 7, two motor-linear module connection blocks 8, and a detection module positioning frame 9. The linear module positioning mechanisms 5, the detection module positioning frame 9, and the linear module positioning mechanisms 5 are sequentially installed from left to right on the upper surface of the marble bed 6. The two linear modules 1 are respectively installed on two linear... On the module positioning mechanism 5; two servo motor systems 7 are respectively connected to a linear module positioning mechanism 5 through a motor and a linear module connecting block 8; the upper detection module 2 and the lower detection module 4 are used to detect the parameters of the rolled ball screw (nominal diameter, major diameter, pitch and helix angle) online, are positioned within the detection module positioning frame 9, and are respectively connected to two linear modules 1; the pair of rolled ball screw positioning mechanisms 3 are installed on the front and rear sides of the marble bed 6, which are used to position the rolled ball screw to be detected and make it within the detection module positioning frame 9;

[0029] When the ball screw to be tested is in a pair of ball screw positioning mechanisms 3, the two servo motor systems 7 drive the two linear modules 1 to move the upper detection module 2 downward and the lower detection module 4 upward respectively. The upper detection module 2 and the lower detection module 4 contact the ball screw to be tested and measure its basic dimensions. When the ball screw to be tested leaves one of the ball screw positioning mechanisms 3, the two servo motor systems 7 drive the two linear modules 1 to move the upper detection module 2 upward and the lower detection module 4 downward respectively, so that the detection module is separated from the ball screw to be tested.

[0030] Here, the lead screw positioning mechanism further fixes the lead screw, reduces its vibration, and improves detection accuracy.

[0031] Furthermore, in one embodiment, combined with Figure 8 The marble bed 6 has steps on its upper surface, and two linear module positioning mechanisms 5 are respectively set on the upper and lower parts of the steps.

[0032] This setting allows for increased movement distance of the upper and lower detection modules, enabling the detection of both small and large lead screws.

[0033] Furthermore, in one embodiment, combined with Figure 3 The upper detection module 2 includes an upper baffle 10, a first spring 11, an upper positioning block 12, a first limiting plate 13, an angle sensor 14, an end cap 15, an upper turntable 16, and a first measuring column 17.

[0034] The upper baffle 10 and the upper positioning block 12 are installed in the slots on the positioning frame 9 of the detection module (e.g., Figure 7 As shown), it can move linearly along the vertical direction of the detection module positioning frame 9; the upper baffle 10 and the upper positioning block 12 are connected by the first spring 11 (four springs are built into the upper positioning block and the upper baffle), the two ends of the first limiting plate 13 are respectively installed on the upper baffle 10 and the upper positioning block 12, and are used to limit the maximum distance between the upper baffle 10 and the upper positioning block 12; the upper turntable 16 is installed on the upper positioning block 12 and can rotate, the angle sensor 14 is installed on the upper turntable 16, and is used to detect the rotation angle of the upper turntable 16; the end cover 15 is installed on the upper positioning block 12, and is used to prevent the upper turntable 16 from moving up and down; the first measuring column 17 is positioned on the upper turntable 16; when the detection equipment is working, the first measuring column 17 is positioned in the raceway under the drive of the rotation of the ball screw to be tested.

[0035] Furthermore, in one embodiment, combined with Figure 4The lower detection module 4 includes a lower turntable 18, a lower positioning block 19, a lower baffle 20, a second spring, a second limiting plate, a second measuring column, and a distance sensor 21. The lower positioning block 19 and the lower baffle 20 are installed in slots on the positioning frame 9 of the detection module, and can move linearly along the vertical direction of the positioning frame 9. The lower positioning block 19 and the lower baffle 20 are connected by the second spring (four springs are built into the lower positioning block and the lower baffle). The two ends of the second limiting plate are respectively installed on the lower positioning block 19 and the lower baffle 20 to limit the maximum distance between the lower positioning block 19 and the lower baffle 20. The lower turntable 18 is installed on the lower positioning block 19 and can rotate. The distance sensor 21 is installed on the side of the lower turntable 18 to measure the distance between the upper positioning block 12 and the lower positioning block 19. The second measuring column is positioned on the lower turntable 18. When the detection equipment is working, the second measuring column is positioned in the raceway under the drive of the rotating ball screw of the rolling mill to be detected.

[0036] Here, the built-in spring allows the detection module to fit snugly inside the lead screw raceway, reducing errors caused by lead screw vibration.

[0037] More preferably, in one embodiment, the first measuring column 17 is positioned on the upper turntable 16 via a trapezoidal groove, and the second measuring column is positioned on the lower turntable 18 via a trapezoidal groove.

[0038] More preferably, in one embodiment, both the first limiting plate 13 and the second limiting plate are fixed by retaining rings.

[0039] Based on the above embodiments, the specific detection process of the online detection equipment for detecting the basic dimensions of ball screws according to the present invention is as follows:

[0040] Step 1: When the ball screw to be tested passes through a pair of ball screw positioning mechanisms, the servo motor system drives the linear module to move linearly, causing the upper detection module to move downward and the lower detection module to move upward, so that the spring is deformed and the measuring column is in close contact with the ball screw to be tested.

[0041] Step 2: Driven by the rotation of the lead screw, the measuring column is positioned in the raceway. The distance sensor detects the nominal diameter and major diameter of the rolling ball screw in real time, and the angle sensor measures the helix angle of the rolling ball screw in real time, thereby measuring the pitch.

[0042] Step 3: When the tested rolling screw leaves a certain rolling ball screw positioning mechanism, the servo motor system drives the linear module to make linear motion, which drives the upper detection module to move upward and the lower detection module to move downward, so that the detection module separates from the rolling ball screw.

[0043] The device for online detection of the basic dimensions of ball screws of this invention has high detection accuracy, high efficiency and high degree of automation. It is suitable for online detection of rolling screws and can avoid changes in screw parameters caused by roller wear and deflection angle, and detect the parameters of rolling screws in a timely manner.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of the invention. Various changes and modifications can be made to the invention without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed invention.

Claims

1. A device for online detection of the basic dimensions of rolled ball screws, characterized in that, The equipment includes two linear modules (1), an upper detection module (2), a pair of rolled ball screw positioning mechanisms (3), a lower detection module (4), two linear module positioning mechanisms (5), a marble bed (6), two servo motor systems (7), two motor-linear module connection blocks (8), and a detection module positioning frame (9); the linear module positioning mechanism (5), the detection module positioning frame (9), and the linear module positioning mechanism (5) are installed sequentially from left to right on the upper surface of the marble bed (6); the two linear modules (1) are respectively installed on the two linear modules. On the positioning mechanism (5); two servo motor systems (7) are connected to a linear module positioning mechanism (5) through a motor and a linear module connecting block (8); the upper detection module (2) and the lower detection module (4) are used to detect the basic dimensions of the rolled ball screw online, are positioned in the detection module positioning frame (9), and are connected to two linear modules (1) respectively; the pair of rolled ball screw positioning mechanisms (3) are installed on the front and rear sides of the marble bed (6) to position the rolled ball screw to be detected and make it within the detection module positioning frame (9); When the ball screw to be tested is in a pair of ball screw positioning mechanisms (3), the two servo motor systems (7) drive the two linear modules (1) to move the upper detection module (2) downward and the lower detection module (4) upward respectively. The upper detection module (2) and the lower detection module (4) contact the ball screw to be tested and measure its basic dimensions. When the ball screw to be tested leaves a certain ball screw positioning mechanism (3), the two servo motor systems (7) drive the two linear modules (1) to move the upper detection module (2) upward and the lower detection module (4) downward respectively, so that the detection module is separated from the ball screw to be tested. The upper detection module (2) includes an upper baffle (10), a first spring (11), an upper positioning block (12), a first limiting plate (13), an angle sensor (14), an end cap (15), an upper turntable (16), and a first measuring column (17); the lower detection module (4) includes a lower turntable (18), a lower positioning block (19), a lower baffle (20), a second spring, a second limiting plate, a second measuring column, and a distance sensor (21); The upper baffle (10) and the upper positioning block (12) are installed in slots on the positioning frame (9) of the detection module at both ends, and can move linearly along the vertical direction of the positioning frame (9); the upper baffle (10) and the upper positioning block (12) are connected by a first spring (11), and the two ends of the first limiting plate (13) are respectively installed on the upper baffle (10) and the upper positioning block (12) to limit the maximum distance between the upper baffle (10) and the upper positioning block (12); The upper turntable (16) is mounted on the upper positioning block (12) and is rotatable. An angle sensor (14) is mounted on the upper turntable (16) to detect the rotation angle of the upper turntable (16). The end cap (15) is mounted on the upper positioning block (12) to prevent the upper turntable (16) from moving up and down. The first measuring column (17) is positioned on the upper turntable (16). When the detection equipment is working, the first measuring column (17) is positioned in the raceway under the drive of the rotating ball screw to be tested. The lower positioning block (19) and the lower baffle (20) are installed in the slots on the positioning frame (9) of the detection module, and can move linearly along the vertical direction of the positioning frame (9); the lower positioning block (19) and the lower baffle (20) are connected by a second spring, and the two ends of the second limiting plate are respectively installed on the lower positioning block (19) and the lower baffle (20) to limit the longest distance between the lower positioning block (19) and the lower baffle (20); the lower turntable (18) is installed on the lower positioning block (19) and can rotate, and the distance sensor (21) is installed on the side of the lower turntable (18) to measure the distance between the upper positioning block (12) and the lower positioning block (19); the second measuring column is positioned on the lower turntable (18); when the detection equipment is working, the second measuring column is positioned in the raceway under the drive of the rotating ball screw to be detected.

2. The equipment for online detection of the basic dimensions of rolled ball screws according to claim 1, characterized in that, The marble bed (6) has steps on its upper surface, and two linear module positioning mechanisms (5) are respectively set on the upper and lower parts of the steps.

3. The equipment for online detection of the basic dimensions of rolled ball screws according to claim 1, characterized in that, The first measuring column (17) is positioned on the upper turntable (16) through a trapezoidal groove, and the second measuring column is positioned on the lower turntable (18) through a trapezoidal groove.

4. The equipment for online detection of the basic dimensions of rolled ball screws according to claim 1, characterized in that, Both the first limiting plate (13) and the second limiting plate are fixed by retaining rings.

5. A detection method based on the device according to any one of claims 1 to 4, characterized in that, The method includes the following steps: Step 1: When the ball screw to be tested passes through a pair of ball screw positioning mechanisms, the servo motor system drives the linear module to move linearly, causing the upper detection module to move downward and the lower detection module to move upward, so that the spring is deformed and the measuring column is in close contact with the ball screw to be tested. Step 2: Driven by the rotation of the lead screw, the measuring column is positioned in the raceway. The distance sensor detects the nominal diameter and major diameter of the rolling ball screw in real time, and the angle sensor measures the helix angle of the rolling ball screw in real time, thereby measuring the pitch. Step 3: When the tested rolling screw leaves a certain rolling ball screw positioning mechanism, the servo motor system drives the linear module to make linear motion, which drives the upper detection module to move upward and the lower detection module to move downward, so that the detection module separates from the rolling ball screw.

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