Impeller outer circle run-out detection device
Patent Information
- Application Number
- CN202522581159.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-12-04
- Publication Date
- 2026-09-18
- Estimated Expiration
- 2035-12-04
AI Technical Summary
[0003]传统检测设备，如千分表、百分表，需将叶轮固定于两顶针或V形块之间，通过人工手动调整测头与叶轮外圆表面接触，确保测头轴线垂直于被测表面，随后需手动旋转叶轮，人工逐点记录指针偏转数据，过程中需多次校准零点并保持测量力均匀，对操作人员的技术熟练度要求极高，导致检测过程繁琐，效率低下
本实用新型提供的一种叶轮外圆跳动检测装置，通过驱动组件推动顶针自动定心固定叶轮，拉簧驱动杠杆使接触杆自动贴合叶轮外圆，无需人工调整接触角度和力度，操作人员仅需完成放料、启动、取料的三步核心操作，大幅降低对技术熟练度的要求，数显回弹式位移传感器与外部检测系统联动，自动完成零点校准、数据采集、曲线生成和合格判断，无需人工逐点记录和计算，避免人为读数误差，进一步简化检测流程，从而达到了简便叶轮外圆跳动检测的操作过程，提高其检测效率的效果。
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Figure CN224772318U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of impeller testing equipment, and in particular to an impeller outer circle runout testing device. Background Technology
[0002] As a core component of mechanical transmission systems, the runout accuracy of the impeller directly affects the operational stability and reliability of the equipment. In aerospace, automotive manufacturing, and industrial machinery, geometric defects such as protrusions or eccentricities on the outer surface of the impeller can lead to increased vibration, noise, or even structural failure. Therefore, accurate detection of the impeller's outer runout is a crucial step in ensuring product quality.
[0003] Traditional testing equipment, such as dial indicators and micrometers, requires fixing the impeller between two pins or V-blocks. The probe must be manually adjusted to contact the outer surface of the impeller to ensure that the probe axis is perpendicular to the surface being measured. Then, the impeller must be manually rotated, and the pointer deflection data must be recorded point by point. The zero point must be calibrated multiple times and the measuring force must be kept uniform. This process requires a high level of technical skill from the operator, making the testing process cumbersome and inefficient. Utility Model Content
[0004] To simplify the operation of impeller outer diameter runout detection and improve its detection efficiency, this application provides an impeller outer diameter runout detection device.
[0005] The impeller outer circle runout detection device provided in this application adopts the following technical solution: A device for detecting impeller outer diameter runout includes a base, a fixed seat, a stage, and ejector pins. The fixed seat is mounted on the base, and the stage is mounted on the fixed seat. Ejector pins are respectively located on opposite sides of the stage. The base is equipped with a drive assembly for driving the two ejector pins to fix the impeller and rotate it. A fixed frame is connected to one side of the fixed seat, and a lever is rotatably connected to the fixed frame. One end of the lever is connected to a contact rod, which is always tangent to the outer diameter of the impeller. A tension spring is connected between the fixed frame and the lever, located at the end of the lever away from the contact rod. A digital display spring-loaded displacement sensor is connected to the fixed frame, and the probe of the digital display spring-loaded displacement sensor is movably connected to the end of the lever away from the contact rod.
[0006] Preferably, the drive assembly includes a guide rail, a slider, a movable seat, a first bearing seat, a push cylinder, a servo motor, a first synchronous pulley, a second synchronous pulley, and a synchronous belt. The guide rail is connected to the base, the fixed seat is fixedly connected to the center of the guide rail, the slider is slidably disposed on the guide rail, two sliders are symmetrically disposed on both sides of the fixed seat, the movable seat is connected to the slider, a first mounting plate is connected to the base, the push cylinder is connected to the first mounting plate, the piston rod of the push cylinder is connected to the movable seat, the first bearing seat is connected to the movable seat, the ejector pin is connected inside the first bearing seat, a second mounting plate is connected to one of the movable seats, the servo motor is connected to the second mounting plate, the first synchronous pulley is connected to the output shaft of the servo motor, the second synchronous pulley is connected to the end of the corresponding ejector pin, and the synchronous belt is tensioned and wound between the first and second synchronous pulleys.
[0007] Preferably, a second bearing seat is connected to the fixing frame, and a second bearing seat is provided on each of the opposite sides of the fixing frame. A fixing rod is fixedly connected to the lever, and the fixing rod is connected between the two second bearing seats.
[0008] Preferably, the probe of the digital display spring-loaded displacement sensor is stepped, and the end of the lever has an oblong hole. The end of the probe of the digital display spring-loaded displacement sensor passes through the oblong hole, and the end of the lever always abuts against the step of the probe of the digital display spring-loaded displacement sensor.
[0009] Preferably, the tension of the tension spring is always greater than the elastic force of the probe of the digital display spring-loaded displacement sensor.
[0010] Preferably, the digital display spring-loaded displacement sensor is electrically connected to an external detection system.
[0011] In summary, this application includes the following beneficial technical effects: This utility model provides an impeller outer diameter runout detection device. A drive assembly pushes a pin to automatically center and fix the impeller, and a tension spring drives a lever to automatically engage the contact rod with the impeller outer diameter. No manual adjustment of the contact angle and force is required. Operators only need to complete three core operations: feeding, starting, and unloading, significantly reducing the skill requirements. A digital display spring-loaded displacement sensor, linked with an external detection system, automatically completes zero-point calibration, data acquisition, curve generation, and pass / fail judgment, eliminating the need for manual point-by-point recording and calculation, avoiding human error, and further simplifying the detection process. This achieves a simplified impeller outer diameter runout detection operation and improves detection efficiency. Attached Figure Description
[0012] Figure 1 This is a schematic diagram of the impeller outer circle runout detection device in the embodiments of this application; Figure 2 yes Figure 1 Enlarged view of point A in the middle.
[0013] Explanation of reference numerals in the attached drawings: 1. Base; 11. Fixed seat; 111. Fixed frame; 1111. Second bearing seat; 12. Stage; 13. Ejector pin; 14. First mounting plate; 2. Drive assembly; 21. Guide rail; 22. Slider; 23. Movable seat; 231. Second mounting plate; 24. First bearing seat; 25. Push cylinder; 26. Servo motor; 27. First synchronous pulley; 28. Second synchronous pulley; 29. Synchronous belt; 3. Lever; 31. Contact rod; 32. Fixed rod; 4. Tension spring; 5. Digital display spring-loaded displacement sensor. Detailed Implementation
[0014] To enable those skilled in the art to better understand the present invention, the solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.
[0015] In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating the orientation or positional relationship, are based on the orientation or positional relationship shown in the accompanying drawings and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation or specific orientation structure and operation, and therefore should not be construed as a limitation of this utility model; the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance. In addition, unless otherwise explicitly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. For those skilled in the art, the specific meaning of the above terms in this utility model can be understood according to the specific circumstances.
[0016] This application discloses an impeller outer diameter runout detection device. (Refer to...) Figure 1 and Figure 2The impeller outer diameter runout detection device includes a base 1, a fixed seat 11, a stage 12, and ejector pins 13. The fixed seat 11 is mounted on the base 1, and the stage 12 is mounted on the fixed seat 11. The stage 12 has a contoured groove adapted to the impeller. Ejector pins 13 are respectively located on opposite sides of the stage 12. The base 1 is equipped with a drive assembly 2 for driving the two ejector pins 13 to fix the impeller and drive the impeller to rotate. A fixing frame 111 is connected to one side of the fixed seat 11. A lever 3 is rotatably connected to the fixed frame 111. One end of the lever 3 is connected to a contact rod 31, which is always tangent to the outer circle of the impeller. A tension spring 4 is connected between the fixed frame 111 and the lever 3. The tension spring 4 is located at the end of the lever 3 away from the contact rod 31. The two ends of the tension spring 4 are connected to the fixed frame 111 and the lever 3 through spring seats. A digital display spring-loaded displacement sensor 5 is connected to the fixed frame 111. The probe of the digital display spring-loaded displacement sensor 5 is movably connected to the end of the lever 3 away from the contact rod 31.
[0017] Among them, the tension of the tension spring 4 is always greater than the elastic force of the probe of the digital display spring-loaded displacement sensor 5, so as to avoid the contact rod 31 from detaching or not sticking properly during the detection process.
[0018] The digital display spring-loaded displacement sensor 5 is electrically connected to an external detection system and can automatically complete zero-point calibration, data acquisition, curve generation, and pass / fail judgment without the need for manual point-by-point recording and calculation, thus avoiding human reading errors.
[0019] Drive assembly 2 includes a guide rail 21, a slider 22, a movable seat 23, a first bearing seat 24, a push cylinder 25, a servo motor 26, a first synchronous pulley 27, a second synchronous pulley 28, and a synchronous belt 29. The guide rail 21 is connected to the base 1, and the fixed seat 11 is fixedly connected to the center position of the guide rail 21. The slider 22 is slidably disposed on the guide rail 21, and two sliders 22 are symmetrically arranged on both sides of the fixed seat 11. The movable seat 23 is connected to the slider 22. A first mounting plate 14 is connected to the base 1, and the push cylinder 25 is connected to the first synchronous pulley 26. On a mounting plate 14, the piston rod of the cylinder 25 is connected to the movable seat 23. The first bearing seat 24 is connected to the movable seat 23, and the ejector pin 13 is connected inside the first bearing seat 24. A second mounting plate 231 is connected to one of the movable seats 23. The servo motor 26 is connected to the second mounting plate 231. The first synchronous pulley 27 is connected to the output shaft of the servo motor 26, and the second synchronous pulley 28 is connected to the end of the corresponding ejector pin 13. The synchronous belt 29 is tensioned and wound between the first synchronous pulley 27 and the second synchronous pulley 28.
[0020] The two ejector pins 13 are driven synchronously by the cylinder 25 to ensure high coaxiality after the impeller is fixed, avoiding detection errors caused by eccentric fixing; the servo motor 26 precisely controls the angle to ensure uniform distribution of detection points and no missed or incorrect detection problems. The servo motor 26 drives the impeller to rotate automatically, and the rotation speed and angle can be precisely controlled. It can quickly complete 360° full-circle detection according to the preset density without manual intervention.
[0021] A second bearing seat 1111 is connected to the fixed frame 111. The second bearing seat 1111 is provided on each of the opposite sides of the fixed frame 111. A fixed rod 32 is fixedly connected to the lever 3. The fixed rod 32 is connected between the two second bearing seats 1111. The bearing support design is adopted to reduce motion friction and wear.
[0022] The probe of the digital display spring-loaded displacement sensor 5 is stepped, and the end of the lever 3 has an oblong hole. The end of the probe of the digital display spring-loaded displacement sensor 5 passes through the oblong hole, and the end of the lever 3 always abuts against the step of the probe of the digital display spring-loaded displacement sensor 5. This arrangement allows the end of the lever 3 to move up and down in an arc when it rotates, while the lever 3 drives the probe of the digital display spring-loaded displacement sensor 5 to move up and down in a straight line, and the two do not interfere with each other.
[0023] The implementation principle of the impeller outer circle runout detection device in this application embodiment is as follows: 1. Place the impeller to be tested stably at the center of the stage 12, adjust the impeller posture so that the axis of the impeller shaft hole is coaxial with the axis of the two ejector pins 13, and ensure that the ejector pins 13 can be smoothly inserted into the shaft hole for fixation.
[0024] 2. Start the drive assembly 2 and push the cylinder 25. The piston rod of the cylinder 25 drives the movable seats 23 on both sides to slide synchronously along the guide rail 21 toward the fixed seat 11. The movable seats 23 drive the first bearing seat 24 and the ejector pin 13 to approach the impeller until the ejector pins 13 on both sides are precisely inserted into the shaft hole of the impeller and tightly abut against the inner wall of the shaft hole, thereby achieving the centering and fixing of the impeller.
[0025] 3. After confirming that the impeller is securely fixed, observe the contact rod 31 and the outer circle of the impeller. The tension spring 4 applies a pulling force to the end of the lever 3 away from the contact rod 31, causing the lever 3 to rotate around the fixed rod 32, so that the contact rod 31 naturally fits against the outer circle of the impeller and remains tangential. The tension of the tension spring 4 is greater than the elastic force of the sensor probe, ensuring that the contact rod 31 will not detach from the impeller surface due to the force of the probe. Zero-point calibration is performed through the operation panel of the digital display spring-loaded displacement sensor 5 or an external detection system, and the initial displacement data is recorded to ensure accurate detection reference.
[0026] 4. Start the servo motor 26. The output shaft of the servo motor 26 drives the first synchronous pulley 27 to rotate. Through the synchronous belt 29, the second synchronous pulley 28 and the corresponding ejector pin 13 are driven to rotate. The ejector pin 13 drives the impeller to rotate synchronously. The servo motor 26 precisely controls the rotation angle according to the preset program, such as one detection point every 1° or 0.5°. It can be adjusted according to the detection accuracy requirements to ensure that the number of detection points on the outer circle of the impeller meets the industry or production needs. During the rotation of the impeller, if there are runout defects such as protrusions or eccentricity on the outer circle, it will push the contact rod 31 to move radially. The contact rod 31 drives the lever 3 to rotate around the fixed rod 32. The end of the lever 3 away from the contact rod 31 synchronously pushes the probe of the digital display spring-loaded displacement sensor 5. The sensor converts the mechanical displacement into an electrical signal and transmits it to the external detection system in real time.
[0027] 5. The external detection system automatically records the displacement data of each detection point, generates an outer circle runout curve by combining the impeller rotation angle, calculates key parameters such as the maximum runout value and the average runout value, and compares them with the preset qualified threshold to automatically determine whether the impeller outer circle runout meets the standard. At the same time, the detection data is stored for subsequent traceability.
[0028] 6. After the impeller completes a 360° full-circumference inspection, the servo motor 26 stops running and controls the piston rod of the push cylinder 25 to retract, causing the two side ejector pins 13 to disengage from the impeller shaft hole. The movable seat 23 resets along the guide rail 21. The operator takes out the inspected impeller. If the inspection is qualified, it flows into the next process. If it is unqualified, it is marked and reworked or scrapped.
[0029] Finally, it should be noted that the above description is only a preferred embodiment of this utility model, and the protection scope of this utility model is not limited to the above embodiments. All technical solutions within the scope of this utility model's concept are within the protection scope of this utility model. It should be pointed out that for those skilled in the art, any improvements and modifications made without departing from the principle of this utility model should also be considered within the protection scope of this utility model.
Claims
1. A device for detecting impeller outer diameter runout, comprising a base (1), a fixed seat (11), a stage (12), and ejector pins (13), wherein the fixed seat (11) is disposed on the base (1), the stage (12) is disposed on the fixed seat (11), and ejector pins (13) are respectively disposed on opposite sides of the stage (12), characterized in that: The base (1) is provided with a drive assembly (2) for driving two pins (13) to fix the impeller and drive the impeller to rotate. A fixing frame (111) is connected to one side of the fixing seat (11). A lever (3) is rotatably connected to the fixing frame (111). A contact rod (31) is connected to one end of the lever (3). The contact rod (31) is always tangent to the outer circle of the impeller. A tension spring (4) is connected between the fixing frame (111) and the lever (3). The tension spring (4) is located at the end of the lever (3) away from the contact rod (31). A digital display spring-loaded displacement sensor (5) is connected to the fixing frame (111). The probe of the digital display spring-loaded displacement sensor (5) is movably connected to the end of the lever (3) away from the contact rod (31).
2. The impeller outer circle runout detection device according to claim 1, characterized in that: The drive assembly (2) includes a guide rail (21), a slider (22), a movable seat (23), a first bearing seat (24), a push cylinder (25), a servo motor (26), a first synchronous pulley (27), a second synchronous pulley (28), and a synchronous belt (29). The guide rail (21) is connected to the base (1), and the fixed seat (11) is fixedly connected to the center of the guide rail (21). The slider (22) is slidably disposed on the guide rail (21), and the two sliders (22) are symmetrically disposed on both sides of the fixed seat (11). The movable seat (23) is connected to the slider (22). A first mounting plate (14) is connected to the base (1). The push cylinder (25) The piston rod of the push cylinder (25) is connected to the first mounting plate (14), the piston rod of the push cylinder (25) is connected to the movable seat (23), the first bearing seat (24) is connected to the movable seat (23), the ejector pin (13) is connected to the first bearing seat (24), one of the movable seats (23) is connected to the second mounting plate (231), the servo motor (26) is connected to the second mounting plate (231), the first synchronous pulley (27) is connected to the output shaft of the servo motor (26), the second synchronous pulley (28) is connected to the end of the corresponding ejector pin (13), and the synchronous belt (29) is tensioned and wound between the first synchronous pulley (27) and the second synchronous pulley (28).
3. The impeller outer circle runout detection device according to claim 1, characterized in that: The fixed frame (111) is connected to a second bearing seat (1111), and the second bearing seat (1111) is provided on each of the opposite sides of the fixed frame (111). A fixed rod (32) is fixedly connected to the lever (3), and the fixed rod (32) is connected between the two second bearing seats (1111).
4. The impeller outer circle runout detection device according to claim 1, characterized in that: The probe of the digital display spring-loaded displacement sensor (5) is set in a stepped shape. The end of the lever (3) is provided with a waist-shaped hole. The end of the probe of the digital display spring-loaded displacement sensor (5) passes through the waist-shaped hole. The end of the lever (3) always abuts against the step of the probe of the digital display spring-loaded displacement sensor (5).
5. The impeller outer circle runout detection device according to claim 1, characterized in that: The tension of the tension spring (4) is always greater than the elastic force of the probe of the digital display spring-loaded displacement sensor (5).
6. The impeller outer circle runout detection device according to claim 1, characterized in that: The digital display spring-loaded displacement sensor (5) is electrically connected to an external detection system.