A device and method for measuring the depth of the center hole of a large bearing

Abstract

This invention relates to a device and method for measuring the depth of the center hole of a large bearing, belonging to the field of bearing inspection technology. It includes a coordinate measuring instrument with guide rails on both sides. A sliding seat is mounted on the outside of the two guide rails. A first cylinder is mounted at the lower end of the sliding seat, and a fixed base is fixedly connected to the output end of the first cylinder. A rotary motor is mounted at the center of the bottom end of the fixed base, and a rotating disk is fixedly connected to the output end of the rotary motor. Industrial cameras are fixedly connected to the bottom ends of both sides of the fixed base. A centering component is mounted at the bottom of the rotating disk, which positions the center of the bearing using probes. A roundness measuring component is mounted on one side of the centering component, used to detect the roundness of the bearing. This invention achieves automatic calculation and calibration of the center position by using the centering component and dual probes for coordinated positioning, combined with the data analysis function of the coordinate measuring instrument.

Description

Technical Field

[0001] This invention relates to the field of bearing testing technology, and in particular to a device and method for measuring the depth of the center hole of a large bearing. Background Technology

[0002] The large bearing center hole depth measuring device is a specialized integrated testing equipment designed to measure the depth and other dimensions of the center hole on large or heavy bearing rings, housing rings, or integral bearings.

[0003] Currently, most existing equipment adopts a step-by-step measurement mode, which requires first locating the center using a special centering tool, and then switching to depth measurement tools and roundness inspection equipment for separate operations. Each measurement is time-consuming and cannot meet the inspection needs of large-scale production. At the same time, traditional measurement relies on manual operation of tools such as dial indicators and depth gauges, or the use of simple tooling to assist in positioning, which makes it difficult to accurately capture the center position of large bearings, resulting in measurement benchmark deviation. Large bearings have large size differences and heavy weight, and the traditional process of manually adjusting probe pressure and calibrating measurement benchmarks is cumbersome and requires extremely high operator skills. It is easy to introduce additional errors due to human factors. Furthermore, the data from depth measurement and roundness inspection are independent of each other and require manual processing and analysis. It is impossible to link the center positioning data in real time for error compensation, and there is a lack of visualization recording methods, which is not conducive to quality traceability, thus seriously affecting the inspection progress.

[0004] Therefore, this application provides a device and method for measuring the depth position of the center hole of a large bearing to meet the requirements. Summary of the Invention

[0005] The technical problem to be solved by the present invention is to provide a device and method for measuring the depth position of the center hole of a large bearing, so as to solve the problems that the traditional centering steps are cumbersome, resulting in long time consumption for a single measurement; the large size difference of large bearings makes the manual adjustment and calibration process cumbersome; and the depth measurement and roundness measurement processes are separated, resulting in independent data and affecting the detection progress.

[0006] To solve the above-mentioned technical problems, the present invention provides the following technical solution:

[0007] A device for measuring the depth of a large bearing center hole includes a coordinate measuring instrument. Guide rails are provided on both sides of the coordinate measuring instrument. A sliding seat is mounted on the outside of the two guide rails. A first cylinder is located at the lower end of the sliding seat. The output end of the first cylinder is fixedly connected to a fixed base. A rotary motor is mounted at the center of the bottom end of the fixed base. A rotating disk is fixedly connected to the output end of the rotary motor. Industrial cameras are fixedly connected to the bottom ends of both sides of the fixed base. A centering component is located at the bottom end of the rotating disk. The centering component positions the center of the bearing using a probe. One side of the centering component is equipped with... The bearing is equipped with a roundness measuring component for detecting the roundness of the bearing; a depth measuring component is provided on the other side of the centering component for detecting the depth of the bearing's center hole; the centering component includes a rotating shaft, which is fixedly connected to the bottom center of a rotating disk, and a connecting seat is rotatably connected to the outside of the rotating shaft. A second cylinder is fixedly connected to one or both sides of the connecting seat. A sliding groove is formed on the outer wall of the rotating shaft, and several first locking grooves are formed at both ends of the sliding groove. The several first locking grooves are arranged in a ring array at both ends of the sliding groove.

[0008] Optionally, the centering component also includes a first electric telescopic rod, with two first electric telescopic rods respectively installed inside the other side of the connecting seat, and the output ends of the two first electric telescopic rods are fixedly connected to a first drive rod.

[0009] Optionally, the centering component further includes two first locking pin seats, which are slidably connected to the outside of the first drive rod, and are fixedly connected to the inner wall of the connecting seat. The two first locking pin seats are slidably connected to the inner sides of their bottom ends, and each first locking ball is engaged with the outer wall of the bottom end of the first drive rod.

[0010] Optionally, the roundness measuring component includes a spring telescopic rod, which is fixedly connected to one side of the outer wall of the rotating disk. A third cylinder is disposed above the spring telescopic rod and is fixedly connected to the outer wall of the rotating disk. A mounting base is fixedly connected to the other end of the spring telescopic rod. Second electric telescopic rods are fixedly connected to the top and bottom of both sides of the mounting base. Second drive rods are fixedly connected to the output ends of the four second electric telescopic rods.

[0011] Optionally, the roundness measuring component further includes four second locking pin seats, which are slidably connected to the outer wall of the second drive rod. Each second locking pin seat is fixedly connected to the outer wall of the mounting base. Each second locking pin seat has a second locking ball slidably connected to both sides of its bottom end, and each second locking ball is engaged with the bottom end of the second drive rod.

[0012] Optionally, the roundness measuring component further includes two cylindrical iron blocks, which are fixed at both ends of the mounting base. The other ends of the two cylindrical iron blocks are respectively provided with locking seats. The two locking seats are fixedly connected to the output end of the second electric telescopic rod and the output end of the third cylinder, respectively. Each locking seat has an electromagnet embedded in the center of one side. The number of electromagnets is the same as that of the cylindrical iron blocks, and they correspond one-to-one.

[0013] Optionally, the roundness measuring component further includes four connecting slots, which are respectively opened at both ends of one side of the two locking seats. Each connecting slot has a second locking slot on its inner walls on both sides. A roundness detection probe is installed at the center of one side of the mounting seat, and a first displacement sensor is provided on one side of the roundness detection probe. The first displacement sensor is fixedly connected to the mounting seat.

[0014] Optionally, the depth measuring component includes an L-shaped seat, which is fixedly connected to the output end of the second cylinder on the other side, and a third electric telescopic rod is fixedly connected to the center of one end of the L-shaped seat.

[0015] Optionally, the depth measurement assembly further includes a depth detection probe, which is installed at the output end of the third electric telescopic rod, and a second displacement sensor is fixedly connected to the outside of the output end of the third electric telescopic rod.

[0016] The present invention also provides another technical solution: a method for measuring the depth position of the center hole of a large bearing, the steps of which are as follows:

[0017] S1: The start guide rail drives the sliding seat to move towards the center of the large bearing. When the sliding seat is close to the center, the first cylinder is activated, driving the fixed seat, rotary motor and rotating disk to move down, driving the centering component into the inner side of the bearing, laying the foundation for subsequent positioning and inspection.

[0018] S2: Start the first electric telescopic rod, push the first drive rod to move to the bottom of the first locking pin seat, squeeze the first locking ball to make it enter the first locking groove, realize the fixation of the rotating shaft and the connecting seat, and ensure the stability of the detection structure;

[0019] S3: After the rotating shaft is fixed to the connecting seat, the electromagnet of the lower locking seat is energized to attract the cylindrical iron block at the bottom of the mounting seat. Then, the lower second electric telescopic rod is activated to drive the second drive rod to pressurize the second locking ball, so that it is locked into the lower second locking groove.

[0020] S4: After the roundness detection probe is fixed to the second cylinder on one side, the second cylinders on both sides push the double probe to the edge of the inner hole, start the rotary motor to drive the probe to rotate, collect the coordinates of multiple points to calculate the center of the circle, and after resetting the second cylinder, the guide rail drives the sliding seat to move to the actual position of the center of the circle.

[0021] S5: After determining the center, start the first electric telescopic rod in the reverse direction to release the shaft from the connecting seat, switch the mounting seat from the upper locking seat, and then start the second electric telescopic rod at the lower end in the reverse direction to de-energize the lower electromagnet and release the mounting seat from the lower locking seat.

[0022] S6: Start the third cylinder to push the mounting base and roundness detection probe to fit against the inner wall of the inner hole, start the rotary motor to drive the rotating disk, the third cylinder and the probe to rotate, and record the trajectory with the help of the first displacement sensor to complete the roundness detection of the inner hole;

[0023] S7: After the roundness test is completed, the second cylinder on the depth test probe side is activated to move the L-shaped seat and probe to the test position. The third electric telescopic rod is activated to push the probe down. Data is fed back through the second displacement sensor to complete the center hole depth test.

[0024] Compared with the prior art, the present invention has at least the following beneficial effects:

[0025] In the above solution, an industrial camera is used to assist in the rough positioning of the metal, and then the centering component and dual probes work together to position it. A rotary motor drives the probes to collect the coordinates of multiple points in the inner hole. Combined with the data analysis function of the coordinate measuring machine, the center position is automatically calculated and calibrated. The entire process of center positioning, roundness detection and depth measurement can be completed without changing tooling or measuring tools. At the same time, the centering component ensures the stable connection between the rotating shaft and the connecting seat through the mechanical locking structure of the first locking ball and the first locking groove, avoiding vibration during rotation detection, further shortening the centering time, ensuring the consistency of the reference for depth measurement and roundness detection, and effectively avoiding the reference offset problem of traditional manual positioning. Compared with the traditional step-by-step measurement mode, the time for a single measurement is greatly reduced and the efficiency is greatly improved, meeting the batch inspection needs of large-scale production.

[0026] In the above solution, the probe's extension and retraction stroke can be automatically adjusted through the coordinated adjustment of the second cylinder, the third cylinder, and multiple sets of electric telescopic rods, thus flexibly adapting to large bearings with different inner diameters. The spring telescopic rod provides flexible support, and the quick-locking structure of the electromagnet and cylindrical iron block ensures stable contact between the roundness detection probe and the inner hole surface, while avoiding damage to the workpiece or probe caused by excessive compression. This solution combines adaptability and safety, effectively offsetting the influence of burrs and chamfer differences on the inner hole surface on the measurement signal, ensuring signal stability during high-speed rotation detection. Simultaneously, the programmed control of the cylinders and electric telescopic rods enables automatic execution of actions such as sliding seat movement, probe extension and retraction, and rotation detection, reducing errors from manual reading and data processing, and improving the repeatability and reliability of the measurement results.

[0027] In the above solution, the probe detection area is made of ruby ​​material, which has excellent wear resistance. Combined with the first displacement sensor to record the movement trajectory in real time, it accurately improves the roundness measurement accuracy. At the same time, the downward stroke of the depth detection probe is precisely controlled by the third electric telescopic rod, and the depth data is fed back in real time by the second displacement sensor. This allows the detection data to be correlated with the center positioning data in real time, enabling automatic error compensation. There is no need for complex benchmark calibration, probe adjustment and other skills, which facilitates quality traceability and production process optimization. In addition, the industrial camera provides real-time visual monitoring during the detection process, and the data is automatically generated into reports to present the measurement results intuitively. This reduces the professional requirements of the operators and facilitates on-site promotion and application. Attached Figure Description

[0028] Figure 1 A frontal three-dimensional structural diagram of a device for measuring the depth of a large bearing's center hole.

[0029] Figure 2 A cross-sectional three-dimensional structural diagram of the rotating disk, the centering component, and the roundness measurement component;

[0030] Figure 3 A schematic diagram of the three-dimensional cross-sectional structure of the component;

[0031] Figure 4 To find the three-dimensional cross-sectional structure diagram of the component;

[0032] Figure 5 This is a schematic diagram of the three-dimensional cross-sectional structure of the roundness measurement component;

[0033] Figure 6 This is a schematic diagram of the three-dimensional cross-sectional structure of the locking seat;

[0034] Figure 7 This is a schematic diagram of the three-dimensional cross-sectional structure of the roundness measurement component.

[0035] Figure 8 This is a schematic diagram of the three-dimensional structure of the depth measurement component;

[0036] Figure 9 for Figure 3 A magnified schematic diagram of the structure at point A in the diagram.

[0037] Figure label:

[0038] 1. Coordinate measuring instrument; 2. Guide rail; 3. First cylinder; 4. Fixed base; 5. Rotary motor; 6. Rotating disk; 7. Centering assembly; 701. Connecting seat; 702. Rotating shaft; 703. Second cylinder; 704. First electric telescopic rod; 705. First locking pin seat; 706. First locking ball; 707. First drive rod; 708. Slide groove; 709. First locking groove; 8. Roundness measuring assembly; 801. Spring telescopic rod; 802. Mounting base; 803. Second electric telescopic rod 804. Rod; 805. Second locking pin seat; 806. Second drive rod; 807. Second locking ball; 808. Roundness detection probe; 809. Locking seat; 810. Connecting groove; 811. Second locking groove; 812. Electromagnet; 813. Cylindrical iron block; 814. First displacement sensor; 815. Third cylinder; 9. Depth measurement assembly; 901. L-shaped seat; 902. Third electric telescopic rod; 903. Second displacement sensor; 904. Depth detection probe; 10. Industrial camera. Detailed Implementation

[0039] To further illustrate the technical means and effects adopted by the present invention in order to achieve the intended purpose, the following detailed description is provided in conjunction with the accompanying drawings and preferred embodiments, based on the specific implementation methods, structures, features and effects of the present invention.

[0040] like Figures 1 to 9As shown, an embodiment of the present invention provides a device for measuring the depth of the center hole of a large bearing, including a coordinate measuring instrument 1. Guide rails 2 are provided on both sides of the coordinate measuring instrument 1. A sliding seat is mounted on the outside of the two guide rails 2. A first cylinder 3 is provided at the lower end of the sliding seat. A fixed seat 4 is fixedly connected to the output end of the first cylinder 3. A rotary motor 5 is installed at the center of the bottom end of the fixed seat 4. A rotating disk 6 is fixedly connected to the output end of the rotary motor 5. Industrial cameras 10 are fixedly connected to the bottom ends of both sides of the fixed seat 4. The industrial cameras 10 are used to record the movement trajectory of the sliding seat and assist in roughly locating the center of the large bearing. A centering component 7 is provided at the bottom end of the rotating disk 6. The centering component 7 locates the center of the bearing using a probe. A roundness measuring component 8 is provided on one side of the centering component 7. The roundness measuring component 8 is used to detect the roundness of the bearing. On the other side of the centering component 7, a depth measuring component 9 is provided. The depth measuring component 9 is used to detect the depth of the bearing center hole. The centering component 7 includes a rotating shaft 702, which is fixedly connected to the bottom center of the rotating disk 6. A connecting seat 701 is rotatably connected to the outside of the rotating shaft 702. A second cylinder 703 is fixedly connected to one or both sides of the connecting seat 701. A sliding groove 708 is provided on the outer wall of the rotating shaft 702. The sliding groove 708 is an annular groove, which helps the rotating shaft 702 to rotate freely when the rotating shaft 702 and the connecting seat 701 are not fixed. Several first locking grooves 709 are provided at both ends of the sliding groove 708. The first locking grooves 709 are engaged with the first locking ball 706 to assist the first locking ball 706 in locking. Several first locking grooves 709 are arranged in a ring at both ends of the sliding groove 708.

[0041] like Figures 2 to 9 As shown, the centering component 7 also includes a first electric telescopic rod 704. Two first electric telescopic rods 704 are respectively installed inside the other side of the connecting seat 701. The output ends of the two first electric telescopic rods 704 are fixedly connected to a first drive rod 707. A spring is sleeved at the connection position between the output end of the first electric telescopic rod 704 and the first drive rod 707. At the same time, the other end of the spring is fixedly connected to the inner wall of the first locking pin seat 705, which facilitates the reset of the first drive rod 707 and provides partial flexible buffer to avoid the output end of the first electric telescopic rod 704 from applying too much pressure to the first drive rod 707. The centering component 7 also includes two first locking pin seats 705. The two first locking pin seats 705 are slidably connected to the outside of the first drive rod 707. The two first locking pin seats 705 are fixedly connected to the inner wall of the connecting seat 701. The two sides of the bottom inner end of the two first locking pin seats 705 are slidably connected to first locking balls 706. Each first locking ball 706 fits with the bottom outer wall of the first drive rod 707.

[0042] like Figures 2 to 7As shown, the roundness measuring assembly 8 includes a spring telescopic rod 801, which is fixedly connected to one side of the outer wall of the rotating disk 6. A third cylinder 814 is disposed above the spring telescopic rod 801 and is fixedly connected to the outer wall of the rotating disk 6. The other end of the spring telescopic rod 801 is fixedly connected to a mounting base 802. The spring telescopic rod 801 consists of a spring and a telescopic rod and provides good flexible support to the mounting base 802, facilitating the provision of a certain preload force when the roundness detection probe 807 detects the inner wall of the bearing. Second electric telescopic rods 803 are fixedly connected to the top and bottom of both sides of the mounting base 802. The output ends of the four second electric telescopic rods 803 are fixedly connected to second drive rods 805. The measuring component 8 also includes four second locking pin seats 804, which are slidably connected to the outer wall of the second drive rod 805. A spring is sleeved at the connection between the second electric telescopic rod 803 and the second drive rod 805, and the other end of the spring is fixedly connected to the inner wall of the second locking pin seat 804 to provide flexible buffering and prevent excessive compression of the output end of the second electric telescopic rod 803 against the second drive rod 805. Each second locking pin seat 804 is fixedly connected to the outer wall of the mounting base 802. A second locking ball 806 is slidably connected to both sides of the bottom end of each second locking pin seat 804, and each second locking ball 806 is engaged with the bottom end of the second drive rod 805. The roundness measuring component 8 also includes two cylindrical iron... The mounting base 802 has two cylindrical iron blocks 812 fixed at both ends. The other ends of the two cylindrical iron blocks 812 are respectively provided with locking seats 808. The two locking seats 808 are fixedly connected to the output end of the second electric telescopic rod 803 and the output end of the third cylinder 814, respectively. Each locking seat 808 has an electromagnet 811 embedded in the center of one side. The number of electromagnets 811 is the same as the number of cylindrical iron blocks 812, and they correspond one-to-one. The roundness measuring component 8 also includes four connecting slots 809. The connecting slots 809 are slidably connected to the outer wall of the second locking pin seat 804, allowing the mounting base 802 to move freely after being released from the locking seat 808 on one side. The four connecting slots 809 are respectively opened on both sides. At both ends of one side of each locking seat 808, a second locking groove 810 is respectively opened on the inner walls of both sides of each connecting groove 809. The second locking groove 810 fits with the surface of the second locking ball 806. A roundness detection probe 807 is installed at the center of one side of the mounting seat 802. A ruby ​​is installed at the end of the roundness detection probe 807 to improve the wear resistance of the roundness detection probe 807. A first displacement sensor 813 is provided on one side of the roundness detection probe 807. The first displacement sensor 813 is fixedly connected to the mounting seat 802. The first displacement sensor 813 is used to record the movement trajectory of the roundness detection probe 807, so as to accurately locate the movement coordinates of the roundness detection probe 807 and improve the detection efficiency of the roundness detection probe 807.

[0043] like Figure 2 and Figure 8 As shown, the depth measurement component 9 includes an L-shaped base 901, which is fixedly connected to the output end of the second cylinder 703 on the other side. A third electric telescopic rod 902 is fixedly connected to the center of one end of the L-shaped base 901. The third electric telescopic rod 902 is used to precisely adjust the moving distance of the depth detection probe 904, thereby facilitating precise control of the downward movement depth. The depth measurement component 9 also includes a depth detection probe 904, which is installed at the output end of the third electric telescopic rod 902. A second displacement sensor 903 is fixedly connected to the outside of the output end of the third electric telescopic rod 902. The second displacement sensor 903 is used to record the moving trajectory of the depth detection probe 904, thereby facilitating precise understanding of the coordinate position of the depth detection probe 904.

[0044] The working principle of the technical solution provided by this invention is as follows:

[0045] During operation, the large bearing is placed below the coordinate measuring instrument 1. The guide rail 2 is activated, causing the sliding seat to move towards the center of the large bearing. Simultaneously, the industrial camera 10 records the sliding seat's movement trajectory. When the sliding seat approaches the center of the large bearing, the first cylinder 3 is activated. The output of the first cylinder 3 drives the fixed seat 4 downwards, which in turn drives the rotary motor 5 downwards. The rotary motor 5 then drives the rotating disk 6 downwards, which in turn drives the centering component 7 to move downwards into the inner side of the large bearing. At this point, the first electric telescopic rod 704 is activated, pushing the first drive rod 707 towards the bottom of the first locking pin seat 705. 7. When the first driving rod 707 approaches the first locking ball 706, the bottom end of the first driving rod 707 contacts the surface of the first locking ball 706 and presses the first locking ball 706, causing the first locking ball 706 to move outward and enter the first locking groove 709 for locking, thus fixing the connecting seat 701 and the rotating shaft 702 together, thereby fixing the second cylinder 703 and the rotating disk 6 together. At this time, the electromagnet 811 below the mounting base 802 is energized, causing the electromagnet 811 at the center of the lower locking seat 808 to attract and fix together with the cylindrical iron block 812 at the bottom of the mounting base 802, thereby fixing the mounting base 802 and the lower locking seat 808 together. At this time, the second electric telescopic rod 80 at the lower end of the mounting base 802 is activated. 3. The lower second drive rod 805 is moved downward by the output end of the lower second electric telescopic rod 803. The bottom end of the lower second drive rod 805 pressurizes the lower second locking ball 806, causing the lower second locking ball 806 to enter the second locking groove 810 of the lower locking seat 808 and lock, thereby reinforcing the connection between the mounting base 802 and the lower locking seat 808. At this time, the second cylinders 703 on both sides are activated. The second cylinders 703 on both sides drive the roundness detection probe 807 and the depth detection probe 904 to move towards the inner edge of the large bearing hole, respectively. When the two probes move to the target position, the rotary motor 5 is activated. The output end of the rotary motor 5 drives the rotating disk 6 to rotate. The rotating disk 6 drives the rotating shaft 702 to rotate, which in turn drives the connecting seat 701 to rotate. The connecting seat 701 then drives the second cylinders 703 on both sides to rotate, which in turn drives the two probes to rotate. When the target point is reached, the rotary motor 5 is turned off. The roundness detection probe 807 detects the coordinates of the inner hole of the large bearing at that position, and the depth detection probe 904 detects the corresponding position coordinates. This process is repeated to detect the coordinates of multiple points in the inner hole of the large bearing. The center position of the large bearing is calculated using these non-collinear points. The results calculated by the two probes are then used to verify the actual position of the bearing's center. At this point, the second cylinders 703 on both sides are activated again.The output of the second cylinder 703 drives the two probes to their original positions, and then the guide rail 2 is restarted according to the calculated center. The guide rail 2 then drives the sliding seat to move to the actual position of the bearing center.

[0046] Furthermore, after determining the bearing center, the first electric telescopic rod 704 is activated. The output end of the first electric telescopic rod 704 drives the first drive rod 707 to move in the opposite direction, thereby causing the bottom end of the first drive rod 707 to separate from the first locking ball 706. This allows the first locking ball 706 to re-enter the inner side of the first locking pin seat 705, thus releasing the fixed state between the connecting seat 701 and the rotating shaft 702. Then, the second electric telescopic rod 803 at the upper end of the mounting base 802 is activated, driving the upper second drive rod 805 through its output end. Moving upwards, the bottom end of the upper second drive rod 805 applies pressure to the upper second locking ball 806, causing the upper second locking ball 806 to enter the interior of the second locking groove 810 of the upper locking seat 808 and lock. Simultaneously, the electromagnet 811 at the center of the upper locking seat 808 is energized, causing the cylindrical iron block 812 at the upper end of the mounting base 802 to attract and fix itself to the electromagnet 811, thus securing it to the upper locking seat 808. Then, the second electric telescopic rod 803 at the lower end of the mounting base 802 is activated, moving downwards... The output end of the second electric telescopic rod 803 drives the second drive rod 805 to move in the opposite direction, thereby driving the bottom end of the second drive rod 805 to separate from the second locking ball 806. This causes the second locking ball 806 to separate from the second locking groove 810 of the lower locking seat 808 and re-enter the inner side of the lower second locking pin seat 804. Then, the electromagnet 811 at the center of the lower locking seat 808 is de-energized, thereby releasing the fixed state between the mounting base 802 and the lower locking seat 808. At this time, the third cylinder 814 is activated, and the third cylinder... The output end of cylinder 814 drives the mounting base 802 to move towards the inner wall of the bearing center hole. Then, the mounting base 802 drives the roundness detection probe 807 to move towards the inner wall of the center hole, so that the roundness detection probe 807 fits against the inner wall of the bearing center hole. Then, the rotary motor 5 is started, and the output end of the rotary motor 5 drives the rotating disk 6 to rotate. The rotating disk 6 drives the third cylinder 814 to rotate, and the third cylinder 814 drives the roundness detection probe 807 to rotate, so that the roundness of the bearing inner hole is detected by the roundness detection probe 807.

[0047] In addition, after the roundness test is completed, the second cylinder 703 in the direction of the depth detection probe 904 is activated. The output end of the second cylinder 703 in this direction drives the L-shaped seat 901 to move towards the inner wall of the bearing center hole. Then, the L-shaped seat 901 drives the depth detection probe 904 to the detection position. Then, the third electric telescopic rod 902 is activated. The output end of the third electric telescopic rod 902 drives the roundness detection probe 807 to move downward, thereby detecting the depth position of the bearing center hole.

[0048] The present invention also provides another technical solution: a method for measuring the depth position of the center hole of a large bearing, the steps of which are as follows:

[0049] S1: Start the guide rail 2 to move the sliding seat towards the center of the large bearing. When the sliding seat is close to the center, start the first cylinder 3 to drive the fixed seat 4, rotary motor 5 and rotating disk 6 to move down, and drive the centering component 7 into the inner side of the bearing, laying the foundation for subsequent positioning and inspection.

[0050] S2: Start the first electric telescopic rod 704, push the first drive rod 707 to move towards the bottom of the first locking pin seat 705, squeeze the first locking ball 706 to make it enter the first locking groove 709, realize the fixation of the rotating shaft 702 and the connecting seat 701, and ensure the stability of the detection structure;

[0051] S3: After the rotating shaft 702 is fixed to the connecting seat 701, the electromagnet 811 of the lower locking seat 808 is energized to attract the cylindrical iron block 812 at the bottom of the mounting seat 802. Then, the lower second electric telescopic rod 803 is activated to drive the second drive rod 805 to press the second locking ball 806, so that it is locked into the lower second locking groove 810.

[0052] S4: After the roundness detection probe 807 is fixed to the second cylinder 703 on one side, the second cylinders 703 on both sides push the double probe to the edge of the inner hole, start the rotary motor 5 to drive the probe to rotate, collect the coordinates of multiple points to calculate the center of the circle, and after resetting the second cylinder 703, the guide rail 2 drives the sliding seat to move to the actual position of the center of the circle.

[0053] S5: After determining the center, start the first electric telescopic rod 704 in the reverse direction to release the rotating shaft 702 from the connecting seat 701, switch the mounting seat 802 to the upper locking seat 808, then start the second electric telescopic rod 803 in the reverse direction, de-energize the lower electromagnet 811, and release the mounting seat 802 from the lower locking seat 808.

[0054] S6: Start the third cylinder 814 to push the mounting base 802 and the roundness detection probe 807 to fit against the inner wall of the inner hole. Start the rotary motor 5 to drive the rotating disk 6, the third cylinder 814 and the probe to rotate. Record the trajectory with the help of the first displacement sensor 813 to complete the roundness detection of the inner hole.

[0055] S7: After the roundness test is completed, the second cylinder 703 on the side of the depth test probe 904 is activated, which drives the L-shaped seat 901 and the probe to the test position. The third electric telescopic rod 902 is activated to push the probe down. Data is fed back through the second displacement sensor 903 to complete the center hole depth test.

[0056] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A device for measuring the depth of a large bearing center hole, characterized in that, The system includes a coordinate measuring instrument (1), with guide rails (2) on both sides of the coordinate measuring instrument (1). Sliding seats are installed on the outside of the two guide rails (2). A first cylinder (3) is installed at the lower end of the sliding seat. A fixed seat (4) is fixedly connected to the output end of the first cylinder (3). A rotary motor (5) is installed at the center of the bottom end of the fixed seat (4). A rotating disk (6) is fixedly connected to the output end of the rotary motor (5). An industrial camera (10) is fixedly connected to the bottom ends of both sides of the fixed seat (4). The bottom end of the rotating disk (6) is provided with a centering component (7), which positions the center of the bearing by means of a probe; A roundness measuring component (8) is provided on one side of the centering component (7), and the roundness measuring component (8) is used to detect the roundness of the bearing; On the other side of the centering component (7), a depth measuring component (9) is provided, which is used to detect the depth of the bearing center hole; The centering component (7) includes a rotating shaft (702), which is fixedly connected to the bottom center of the rotating disk (6). A connecting seat (701) is rotatably connected to the outside of the rotating shaft (702). A second cylinder (703) is fixedly connected to one or both sides of the connecting seat (701). A sliding groove (708) is provided on the outer wall of the rotating shaft (702). Several first locking grooves (709) are provided at both ends of the sliding groove (708). Several first locking grooves (709) are arranged in a ring at both ends of the sliding groove (708).

2. The large bearing center hole depth measuring device according to claim 1, characterized in that, The centering component (7) also includes a first electric telescopic rod (704). The two first electric telescopic rods (704) are respectively installed inside the other side of the connecting seat (701). The output ends of the two first electric telescopic rods (704) are fixedly connected to a first drive rod (707).

3. The large bearing center hole depth measuring device according to claim 2, characterized in that, The centering component (7) further includes two first locking pin seats (705), which are slidably connected to the outside of the first drive rod (707). The two first locking pin seats (705) are fixedly connected to the inner wall of the connecting seat (701). The two first locking pin seats (705) are slidably connected to the inner sides of the bottom end of the two first locking pin seats (705). Each first locking ball (706) is engaged with the outer wall of the bottom end of the first drive rod (707).

4. The large bearing center hole depth measuring device according to claim 3, characterized in that, The roundness measuring component (8) includes a spring telescopic rod (801), which is fixedly connected to the outer wall of one side of the rotating disk (6). A third cylinder (814) is provided above the spring telescopic rod (801), which is fixedly connected to the outer wall of the rotating disk (6). The other end of the spring telescopic rod (801) is fixedly connected to a mounting base (802). The top and bottom sides of the mounting base (802) are fixedly connected to second electric telescopic rods (803). The output ends of the four second electric telescopic rods (803) are fixedly connected to second drive rods (805).

5. The large bearing center hole depth measuring device according to claim 4, characterized in that, The roundness measuring component (8) further includes four second locking pin seats (804), which are slidably connected to the outer wall of the second drive rod (805). Each second locking pin seat (804) is fixedly connected to the outer wall of the mounting base (802). Each second locking pin seat (804) has a second locking ball (806) slidably connected to both sides of its bottom end. Each second locking ball (806) is engaged with the bottom end of the second drive rod (805).

6. The large bearing center hole depth position measuring device according to claim 5, characterized in that, The roundness measuring component (8) also includes two cylindrical iron blocks (812), which are fixed at both ends of the mounting base (802). The other ends of the two cylindrical iron blocks (812) are respectively provided with locking seats (808). The two locking seats (808) are respectively fixedly connected to the output end of the second electric telescopic rod (803) on one side and the output end of the third cylinder (814). Each locking seat (808) has an electromagnet (811) embedded in the center of one side. The number of electromagnets (811) is the same as that of the cylindrical iron blocks (812), and they correspond one-to-one.

7. The large bearing center hole depth measuring device according to claim 6, characterized in that, The roundness measuring component (8) also includes four connecting slots (809), which are respectively opened at both ends of one side of the two locking seats (808). Each connecting slot (809) has a second locking slot (810) on its inner walls on both sides. A roundness detection probe (807) is installed at the center of one side of the mounting seat (802). A first displacement sensor (813) is provided on one side of the roundness detection probe (807). The first displacement sensor (813) is fixedly connected to the mounting seat (802).

8. The large bearing center hole depth measuring device according to claim 7, characterized in that, The depth measurement component (9) includes an L-shaped seat (901), which is fixedly connected to the output end of the second cylinder (703) on the other side, and a third electric telescopic rod (902) is fixedly connected to the center of one end of the L-shaped seat (901).

9. The large bearing center hole depth position measuring device according to claim 8, characterized in that, The depth measurement component (9) also includes a depth detection probe (904), which is installed at the output end of the third electric telescopic rod (902), and a second displacement sensor (903) is fixedly connected to the outside of the output end of the third electric telescopic rod (902).

10. A method for measuring the depth of the center hole of a large bearing, applicable to the large bearing center hole depth measuring device as described in claim 9, characterized in that, The method includes the following steps: S1: Start the guide rail (2) to move the sliding seat towards the center of the large bearing. When the sliding seat is close to the center, start the first cylinder (3) to drive the fixed seat (4), rotary motor (5) and rotating disk (6) to move down, and drive the centering component (7) into the inner side of the bearing, laying the foundation for subsequent positioning and inspection. S2: Start the first electric telescopic rod (704), push the first drive rod (707) to move to the bottom of the first locking pin seat (705), squeeze the first locking ball (706) to make it enter the first locking groove (709), realize the fixation of the rotating shaft (702) and the connecting seat (701), and ensure the stability of the detection structure; S3: After the rotating shaft (702) is fixed to the connecting seat (701), the electromagnet (811) of the lower locking seat (808) is energized to attract the cylindrical iron block (812) at the bottom of the mounting seat (802), and then the lower second electric telescopic rod (803) is activated to drive the second drive rod (805) to pressurize the second locking ball (806) so that it is locked into the lower second locking groove (810); S4: After the roundness detection probe (807) is fixed with the second cylinder (703) on one side, the second cylinders (703) on both sides push the double probe to the edge of the inner hole, start the rotary motor (5) to drive the probe to rotate, collect the coordinates of multiple points to calculate the center of the circle, and after resetting the second cylinder (703), the guide rail (2) drives the sliding seat to move to the actual position of the center of the circle. S5: After determining the center, start the first electric telescopic rod (704) in reverse to release the fixing of the rotating shaft (702) and the connecting seat (701), switch the fixing of the mounting seat (802) and the upper locking seat (808), then start the second electric telescopic rod (803) in reverse, de-energize the lower electromagnet (811), and release the fixing of the mounting seat (802) and the lower locking seat (808); S6: Start the third cylinder (814) to push the mounting base (802) and roundness detection probe (807) to fit against the inner wall of the inner hole, start the rotary motor (5) to drive the rotating disk (6), the third cylinder (814) and the probe to rotate, and record the trajectory with the help of the first displacement sensor (813) to complete the inner hole roundness detection; S7: After the roundness test is completed, the second cylinder (703) on the side of the depth test probe (904) is started, which drives the L-shaped seat (901) and the probe to the test position. The third electric telescopic rod (902) is started to push the probe down. Data is fed back through the second displacement sensor (903) to complete the center hole depth test.

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