Universal type device for rapid detection of internal channel of ball screw nut

Abstract

This utility model discloses a universal rapid testing device for the inner groove of a ball screw nut, comprising: a digital dial indicator, a nut to be tested, and a fixed base; one end of the fixed base is clamped to a fixed bracket, and a cross roller guide is fixedly connected to one side of the fixed bracket. An upper fixed block and a lower fixed block are fixedly connected to one side of the cross roller guide. A spring and a sliding rod are arranged between the upper and lower fixed blocks, with the spring sleeved on the outside of the sliding rod. By using the combination of the cross roller guide and the sliding rod, the device achieves rapid positioning and stable movement, allowing the upper and lower fixed blocks to slide along the guide, with the spring providing a buffering effect. During testing, simply pressing the down handle moves the chuck assembly, simplifying the operation process. The spring sleeved on the outside of the sliding rod allows for adjustment of the preload through a locking screw, ensuring smooth movement and avoiding the tedious manual adjustment, thereby shortening the time required for a single test.

Description

Technical Field

[0001] This utility model relates to the technical field of mechanical manufacturing and precision testing, and in particular to a universal rapid testing device for the inner groove of ball screw nuts. Background Technology

[0002] As an indispensable transmission component in engineering and precision machinery, the ball screw works by driving the nut through the rotation of the screw, thus enabling precise displacement of related components. This mechanism has led to its widespread application in various industrial equipment and precision instruments. With the continuous advancement of manufacturing technology, the requirements for the internal groove inspection of ball screw nuts are becoming increasingly stringent. The nut internal groove inspection device, as a high-precision tool, aims to ensure grinding accuracy through rapid positioning and measurement, thereby ensuring the overall performance and reliability of the transmission system and meeting the dual demands of high efficiency and quality control in modern production.

[0003] However, existing nut inner groove detection devices have revealed significant problems in practice, including excessively long detection time for a single part leading to low overall efficiency, large errors in detection data that fail to accurately reflect the inner groove size, which in turn affects the accuracy of ball screws. In addition, the devices lack versatility and are difficult to adapt to the detection needs of nuts of different specifications. These limitations seriously restrict the optimization of production processes and the widespread application of the equipment.

[0004] Therefore, in order to address the shortcomings of the above-mentioned problems, a universal and rapid detection device for the inner groove of ball screw nuts is proposed. Summary of the Invention

[0005] This invention overcomes the shortcomings of the prior art and provides a universal and rapid detection device for the inner groove of ball screw nuts.

[0006] To achieve the above objectives, the technical solution adopted by this utility model is as follows: a universal rapid testing device for the inner groove of a ball screw nut, comprising: a digital dial indicator, a nut to be tested, and a fixing base;

[0007] One end of the fixed base is snapped with a fixed bracket, and a cross roller guide is fixedly connected to one side of the fixed bracket. An upper fixed block and a lower fixed block are fixedly connected to one side of the cross roller guide. A spring and a sliding rod are provided between the upper fixed block and the lower fixed block. The spring is sleeved on the outside of the sliding rod. A locking screw is provided at the bottom of the lower fixed block. One end of the locking screw is threaded to the bottom of the sliding rod.

[0008] The bottom of the digital micrometer is fixedly connected to a micrometer connector. The bottom of the micrometer connector is fixedly connected to the upper fixed block. One end of the digital micrometer is in contact with the top of the sliding rod. An upper jaw is fixedly connected to one side of the upper fixed block, and a lower jaw is fixedly connected to one side of the lower fixed block. A detection unit is provided between the upper jaw and the lower jaw.

[0009] In a preferred embodiment of this utility model, the detection unit is an inner groove detection probe, which is fixedly disposed at the clamping ends of the upper and lower jaws and is used to contact and engage with the inner groove of the nut to be tested during detection.

[0010] In a preferred embodiment of this utility model, both sides of the upper fixing block are fixedly connected with a pressing handle.

[0011] In a preferred embodiment of this utility model, anti-slip pads are adhered to the outer circumference of the pressing handle.

[0012] In a preferred embodiment of this utility model, the cross roller guide rail includes a guide rail slider and a guide rail track.

[0013] In a preferred embodiment of this utility model, the guide rail is fixedly connected to the corresponding positions on the back of the upper and lower fixed blocks, and the guide rail slider is fixedly connected to the fixed bracket.

[0014] In a preferred embodiment of this invention, the spring is a stainless steel compression spring.

[0015] In a preferred embodiment of this invention, the inner channel detection probe is made of alloy or ceramic.

[0016] In a preferred embodiment of this utility model, the detection end of the inner channel detection probe is a hemispherical or arc-shaped structure.

[0017] In a preferred embodiment of this utility model, the nut to be tested is sleeved on the outside of the upper and lower jaws.

[0018] This utility model solves the defects existing in the background technology, and has the following beneficial effects:

[0019] (1) This utility model provides a universal fast detection device for the inner groove of ball screw nut. By adopting a combination of cross roller guide rail and sliding bar, the device can achieve rapid positioning and stable movement, so that the upper and lower fixed blocks can slide along the guide rail, and with the buffering effect of the spring, the claw assembly can be moved by simply pressing the pressing handle during detection, thereby simplifying the operation process. The spring is sleeved on the outside of the sliding bar, and the preload is adjusted by the locking screw to ensure smooth movement and avoid the tedious manual adjustment, thereby shortening the time of a single detection and improving detection efficiency.

[0020] (2) This utility model provides a general-purpose rapid detection device for the inner groove of ball screw nuts. By using the inner groove detection probe and digital micrometer, the accuracy of the detection data is enhanced. The probe adopts a hemispherical or arc-shaped structure and is fixed to the ends of the upper and lower jaws, which can be tightly inserted into the inner groove of the nut to avoid slippage or displacement. The digital micrometer is fixed to the upper fixed block through the micrometer connecting seat. The detection end directly contacts the top of the sliding rod, converting the small displacement of the probe into an electrical signal output, ensuring the real-time and reliability of the reading, greatly reducing the detection error, and providing high-precision inner groove size data.

[0021] (3) This utility model provides a universal and fast detection device for the inner groove of ball screw nuts. By setting replaceable upper and lower jaws, the device achieves universality and adaptability, allowing users to select matching jaw components according to the specifications of the nut to be tested and install them in the appropriate position on the fixing block without replacing the entire device. The jaws are connected to the upper and lower fixing blocks by simple mechanical fixation, and the inner groove detection probe can be adjusted with the jaws to ensure that the inner grooves of nuts of different sizes can be effectively detected. It can realize the common detection of nuts of multiple specifications and reduce the investment in special equipment. Attached Figure Description

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0023] Figure 1 This is a three-dimensional structural diagram of the device body according to a preferred embodiment of the present invention;

[0024] Figure 2 This is a cross-sectional perspective view of a preferred embodiment of the present invention;

[0025] Figure 3 This is an enlarged structural view of part A of a preferred embodiment of the present invention.

[0026] In the diagram: 1. Digital dial indicator; 2. Nut to be tested; 3. Fixing base; 4. Press-down handle; 5. Lower fixing block; 6. Upper fixing block; 7. Lower jaw; 8. Upper jaw; 9. Dial indicator connecting base; 10. Cross roller guide; 11. Sliding rod; 12. Locking screw; 13. Spring; 14. Fixing bracket; 15. Inner groove testing probe. Detailed Implementation

[0027] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. These drawings are simplified schematic diagrams, which are only used to illustrate the basic structure of the present invention in a schematic manner, and therefore only show the components related to the present invention.

[0028] like Figure 1 As shown, a general-purpose rapid testing device for the inner groove of a ball screw nut includes: a digital dial indicator 1, a nut to be tested 2, and a fixing seat 3;

[0029] like Figures 1-3 As shown, a fixed bracket 14 is snapped onto one end of the fixed base 3. A cross roller guide rail 10 is fixedly connected to one side of the fixed bracket 14. The cross roller guide rail 10 includes a guide rail slider and a guide rail track. An upper fixed block 6 and a lower fixed block 5 are fixedly connected to one side of the cross roller guide rail 10. The guide rail track is fixedly connected to the corresponding position on the back of the upper fixed block 6 and the lower fixed block 5. The guide rail slider is fixedly connected to the fixed bracket 14. A spring 13 and a sliding rod 11 are provided between the upper fixed block 6 and the lower fixed block 5. The spring 13 is sleeved on the outside of the sliding rod 11. The spring 13 is a stainless steel compression spring 13. A locking screw 12 is provided at the bottom of the lower fixed block 5. One end of the locking screw 12 is threadedly connected to the bottom of the sliding rod 11. A pressing handle 4 is fixedly connected to both sides of the upper fixed block 6. Anti-slip pads are glued to the outer circumference of the pressing handle 4.

[0030] The bottom of the digital micrometer 1 is fixedly connected to a micrometer connector 9. The bottom of the micrometer connector 9 is fixedly connected to the upper fixed block 6. One end of the digital micrometer 1 is in contact with the top of the sliding rod 11. An upper claw 8 is fixedly connected to one side of the upper fixed block 6, and a lower claw 7 is fixedly connected to one side of the lower fixed block 5.

[0031] It should be noted that the combination of the cross roller guide 10 and the sliding bar 11 achieves rapid positioning and stable movement. With the buffering effect of the spring 13, the operator only needs to press the pressing handle 4 to complete the adjustment of the claw assembly, thereby simplifying the cumbersome steps in traditional inspection. This not only shortens the time of a single inspection, but also reduces the risk of human error, thus effectively supporting high-efficiency assembly line operations in industrial applications and meeting the needs of modern manufacturing for rapid response.

[0032] In terms of detection accuracy, the device body ensures the accuracy and real-time performance of data reading through the coordinated work of the digital micrometer 1 and the dedicated inner groove detection probe 15. The probe adopts a hemispherical or arc-shaped structure, which can be tightly inserted into the inner groove of the nut to avoid slippage or displacement. The digital micrometer 1 converts the minute displacement into an electrical signal output, which directly reflects the dimensional deviation of the inner groove, which helps to ensure the performance of the ball screw transmission components. It is especially suitable for scenarios with strict tolerance requirements in precision machinery and engineering equipment.

[0033] Furthermore, with the interchangeable upper jaw 8 and lower jaw 7, it can adapt to the testing needs of nuts of different specifications. Users do not need to invest in multiple sets of dedicated equipment. They can simply adjust the jaw assembly according to the model of the nut 2 to be tested to achieve commonality, which saves costs and enhances the flexibility of the equipment.

[0034] like Figures 1-3 As shown, a detection unit is provided between the upper jaw 8 and the lower jaw 7. The detection unit is an inner channel detection probe 15, which is fixedly installed at the clamping ends of the upper jaw 8 and the lower jaw 7. The nut 2 to be tested is sleeved on the outside of the upper jaw 8 and the lower jaw 7 and is used to contact and engage the inner channel of the nut 2 to be tested during testing. The inner channel detection probe 15 is made of alloy or ceramic, and the detection end of the inner channel detection probe 15 is a hemispherical or arc-shaped structure.

[0035] It should be noted that the probe of the detection unit is fixed to the clamping end of the chuck, so that it can be aligned with the inner groove of the nut 2 to be tested during operation. When the nut 2 to be tested is sleeved on the outside of the chuck, the probe can actively contact and firmly lock into the groove. The direct contact positioning method lays the physical basis for measurement and ensures the initial accuracy of the detection action.

[0036] The inner channel inspection probe 15 is made of alloy or ceramic and uses a hemispherical or arc-shaped structure as the inspection end, which brings many performance advantages. The alloy material provides excellent strength and wear resistance, making it suitable for high-intensity and frequent inspection tasks; the ceramic material has the characteristics of high hardness, corrosion resistance and light weight, which helps to avoid scratching precision workpieces and reduce inertial errors.

[0037] The hemispherical or arc-shaped detection end design of the inner groove detection probe 15 can better fit the curved contour of the inner groove, achieving surface contact rather than point contact. This not only reduces measurement errors caused by inaccurate positioning, but also reduces the potential risk of damage to the precision thread surface, ensuring the safety of the detection process and the repeatability and reliability of the data.

[0038] When using this utility model, select the appropriate claw assembly according to the specific specifications and model of the nut 2 to be tested, that is, install the corresponding lower claw 7 at the appropriate position of the lower fixing block 5, and at the same time install the corresponding upper claw 8 at the corresponding position of the upper fixing block 6. After installation, perform a zeroing operation on the digital display dial indicator 1.

[0039] After preparation, press the lower handles 4 on both sides of the device. The handles will cause the jaw assembly to shift, creating space for the nut to be placed. Place the nut 2 to be tested on the outside of the lower jaw 7 and upper jaw 8, and adjust the front-back and left-right positions of the nut so that the inner groove detection probe 15 can be inserted into the inner groove of the nut, achieving full contact between the probe and the groove surface. Once the inner groove detection probe 15 is fully inserted into the groove and stable, the value displayed on the digital micrometer 1 can be read. This value reflects the dimensional deviation or grinding accuracy of the inner groove of the nut. After the test is completed, release the lower handles 4 to remove the nut. The device will automatically reset, preparing for the next test.

[0040] Based on the preferred embodiments of this utility model described above, those skilled in the art can make various changes and modifications without departing from the technical concept of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A universal rapid detection device for internal raceway of ball screw nut, comprising: A digital dial indicator (1), a nut to be tested (2), and a fixing base (3), characterized in that; One end of the fixed seat (3) is snapped with a fixed bracket (14). A cross roller guide (10) is fixedly connected to one side of the fixed bracket (14). An upper fixed block (6) and a lower fixed block (5) are fixedly connected to one side of the cross roller guide (10). A spring (13) and a sliding rod (11) are provided between the upper fixed block (6) and the lower fixed block (5). The spring (13) is sleeved on the outside of the sliding rod (11). A locking screw (12) is provided at the bottom of the lower fixed block (5). One end of the locking screw (12) is threaded to the bottom of the sliding rod (11). The bottom of the digital micrometer (1) is fixedly connected to a micrometer connector (9). The bottom of the micrometer connector (9) is fixedly connected to the upper fixing block (6). One end of the digital micrometer (1) is in contact with the top of the sliding rod (11). An upper jaw (8) is fixedly connected to one side of the upper fixing block (6). A lower jaw (7) is fixedly connected to one side of the lower fixing block (5). A detection unit is provided between the upper jaw (8) and the lower jaw (7).

2. A universal rapid detection device for internal raceway of ball screw nut according to claim 1, characterized in that: The detection unit is an inner channel detection probe (15), which is fixedly installed at the clamping ends of the upper jaw (8) and the lower jaw (7) and is used to contact and clamp into the inner channel of the nut (2) to be tested during the test.

3. A universal rapid detection device for internal raceway of ball screw nut according to claim 1, characterized in that: Both sides of the upper fixing block (6) are fixedly connected to a pressing handle (4).

4. The universal rapid detection device for inner raceway of ball screw nut according to claim 3, characterized in that: The outer circumference of the pressing handle (4) is covered with anti-slip pads.

5. A universal rapid detection device for the inner groove of a ball screw nut according to claim 1, characterized in that: The cross roller guide (10) includes a guide slider and a guide rail track.

6. A universal rapid detection device for the inner groove of a ball screw nut according to claim 5, characterized in that: The guide rail is fixedly connected to the corresponding position on the back of the upper fixed block (6) and the lower fixed block (5), and the guide rail slider is fixedly connected to the fixed bracket (14).

7. A universal rapid detection device for the inner groove of a ball screw nut according to claim 1, characterized in that: The spring (13) is a stainless steel compression spring.

8. A universal rapid detection device for internal raceway of ball screw nut according to claim 2, characterized in that: The inner channel detection probe (15) is made of alloy or ceramic.

9. A universal rapid detection device for the inner groove of a ball screw nut according to claim 2, characterized in that: The detection end of the inner channel detection probe (15) is a hemispherical or arc-shaped structure.

10. A universal rapid detection device for the inner groove of a ball screw nut according to claim 1, characterized in that: The nut (2) to be tested is sleeved on the outside of the upper jaw (8) and the lower jaw (7).

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