Dynamic balance optimization method for high-temperature-resistant automobile metal exhaust rotor

Abstract

The invention provides a dynamic balance optimization method for a high-temperature-resistant automobile metal exhaust rotor. The dynamic balance optimization method comprises the following steps: S1, fixing; s2, a detection step; s3, a grinding step; and S4, rechecking. The invention relates to the field of automobile metal exhaust rotors. According to the scheme, the rotor can be rapidly and conveniently fixed through the two fixing blocks, meanwhile, it is guaranteed that the axis of the rotor and the axis of the bearing are integrated, dynamic balance data of the rotor can be quantified through the dial indicator and the measuring scale, and the actual grinding degree obtained after recording and calculation is combined. And the grinding device is controlled to effectively grind the peripheral side of the rotor, the airflow pulsation of the rotor is reduced after optimization, and adverse effects on other parts are reduced.

Description

Technical Field

[0001] The invention relates to the field of automobile metal exhaust rotors, and in particular to a dynamic balancing optimization method for high-temperature resistant automobile metal exhaust rotors. Background Art

[0002] The exhaust rotor is an air wave supercharger. The air wave supercharger is a pressure converter that allows two gas working fluids to directly contact each other and transfer energy through pressure waves. It is used to boost the pressure of the gas entering the cylinder by utilizing the energy of the internal combustion engine exhaust gas when supercharging the internal combustion engine.

[0003] It mainly consists of an air stator, a gas stator, and a rotor. The rotor is driven by the internal combustion engine crankshaft via a belt. When the rotor rotates, the axial air passage formed by the blades on the rotor connects with the high-pressure gas inlet, generating a compression wave. The compression wave propagates along the air passage at the speed of sound, transferring the gas energy to the air in the air passage, increasing the air pressure and density and causing it to flow forward.

[0004] When the rotor rotates around its axis, the uneven distribution of mass relative to the axis generates centrifugal force. This unbalanced centrifugal force acts on the rotor bearings, causing vibration, noise and accelerated bearing wear, which seriously affects the performance and life of the product.

[0005] Therefore, it is necessary to provide a dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor to solve the above technical problems. Summary of the Invention

[0006] The present invention provides a method for dynamic balancing optimization of a high-temperature resistant automotive metal exhaust rotor, which solves the problem in related technologies that when the rotor rotates around its axis, centrifugal force is generated due to uneven mass distribution relative to the axis, which in turn causes vibration, noise, and accelerated bearing wear, affecting the performance and life of the exhaust rotor.

[0007] To solve the above technical problems, the present invention provides a method for dynamically balancing and optimizing a high-temperature resistant automotive metal exhaust rotor, comprising the following steps:

[0008] S1. Fixation steps:

[0009] Ensure that the rotor is stably clamped without looseness or deformation;

[0010] After clamping, the initial radial runout inspection is carried out to <0.02mm;

[0011] S2. Detection steps:

[0012] Measure the rotor runout and determine the imbalance position;

[0013] Use the dial gauge method to test it. The dial gauge probe needs to touch the outer circle of the rotor vertically, preload 0.2-0.5mm, rotate the rotor slowly, record the data every 30°, and take the average value of multiple rotations;

[0014] S3, grinding steps:

[0015] Correct the imbalance by removing weights;

[0016] Use a grinding wheel to grind the unbalanced part of the rotor. The single grinding should be ≤0.1mm.

[0017] S4. Re-examination steps:

[0018] Retest to ensure the optimization is effective;

[0019] The rotor needs to be cleaned to avoid interference from grinding debris.

[0020] Preferably, in step S1 , a base and a fixing structure are required when fixing the rotor.

[0021] Preferably, in step S2, when inspecting the rotor, a sliding frame, a magnetic gauge stand, and a micrometer are required.

[0022] Preferably, when grinding the rotor in step S3, a base, a movable frame, and a grinding device are required.

[0023] Preferably, the fixing structure includes a first fixed block arranged on the left side of the top of the base, a second fixed block is arranged on the right side of the top of the base and can slide left and right, a diagonal clamping disk is arranged on the side opposite to the first fixed block and can be rotated, and a first motor is arranged on the left side of the top of the base for driving the diagonal clamping disk on the left side to rotate.

[0024] Preferably, a first screw rod is laterally rotatably provided on the inner side of the base, the peripheral side of the first screw rod is threadedly connected to the bottom of the second fixed block, and a rotating hand wheel is provided at the right end of the first screw rod and on the right side of the base.

[0025] Preferably, a magnetic base is provided on the inner side of the sliding frame, a micrometer is provided on the bottom of the magnetic base, a probe at the bottom of the micrometer is located at the top of the rotor, and a range ruler is provided on the front of the sliding frame.

[0026] Preferably, the bottom of the movable frame is slidably connected to the top of the base, a sliding frame is provided on the inner side of the movable frame so as to slide up and down, and the inner side of the sliding frame is slidably connected to the top of the grinding device.

[0027] Preferably, a first electrically-controlled telescopic rod is provided on the inner side of the mobile frame, the telescopic end of the bottom of the first electrically-controlled telescopic rod is fixedly connected to the top of the sliding frame, a second electrically-controlled telescopic rod is provided on the inner side of the base and at the bottom of the back side of the mobile frame, a second screw rod is provided on the inner side of the sliding frame so as to be rotatable laterally, and a second motor is provided at the left end of the second screw rod and located on the inner side of the sliding frame.

[0028] Compared with related technologies, the dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor provided by the present invention has the following beneficial effects:

[0029] The two fixing blocks can quickly and conveniently fix the rotor, while ensuring that the rotor axis and the bearing axis are integrated. The micrometer and range ruler make the dynamic balance data of the rotor quantifiable. Combined with the actual grinding degree obtained after recording and calculation, the grinding device is controlled to effectively grind the circumference of the rotor. After optimization, the rotor airflow pulsation is reduced, reducing the adverse effects on other components. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0031] Figure 1 The best structural diagram provided by the present invention;

[0032] Figure 2 for Figure 1 The front view structural diagram of the sliding frame shown;

[0033] Figure 3 for Figure 1 The schematic diagram of the front view of the base part is shown;

[0034] Figure 4 for Figure 1 A structural schematic diagram of a partial front view of the mobile frame shown;

[0035] Figure 5 for Figure 1 A schematic structural diagram of a top view of the base shown;

[0036] Figure 6 This is a schematic structural diagram of the diagonal clamping disc provided by the present invention.

[0037] Description of Figure Numbers:

[0038] 1. Base;

[0039] 21. First fixed block; 22. Second fixed block; 23. Diagonal clamping plate; 24. First motor; 25. First screw rod;

[0040] 31. Sliding rack; 32. Magnetic gauge stand; 33. Dial indicator; 34. Range ruler;

[0041] 41. Moving frame; 42. Sliding frame; 43. Grinding device; 44. First electrically controlled telescopic rod; 45. Second electrically controlled telescopic rod; 46. Second screw rod; 47. Second motor.

[0042] The purpose, features and advantages of the present invention will be further described with reference to the accompanying drawings and in conjunction with the embodiments. DETAILED DESCRIPTION

[0043] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0044] The present invention provides a method for dynamic balancing optimization of a high-temperature resistant automobile metal exhaust rotor, comprising the following steps:

[0045] S1. Fixation steps:

[0046] Ensure that the rotor is stably clamped without looseness or deformation;

[0047] After clamping, the initial radial runout inspection is carried out to <0.02mm;

[0048] S2. Detection steps:

[0049] Measure the rotor runout and determine the imbalance position;

[0050] Use the dial gauge method to test it. The dial gauge probe needs to touch the outer circle of the rotor vertically, preload 0.2-0.5mm, rotate the rotor slowly, record the data every 30°, and take the average value of multiple rotations;

[0051] S3, grinding steps:

[0052] Correct the imbalance by removing weights;

[0053] Use a grinding wheel to grind the unbalanced part of the rotor. The single grinding should be ≤0.1mm.

[0054] S4. Re-examination steps:

[0055] Retest to ensure the optimization is effective;

[0056] The rotor needs to be cleaned to avoid interference from grinding debris.

[0057] First embodiment:

[0058] See also Figure 1 、 Figure 3 and Figure 6 , a dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor, including a base and a fixing structure.

[0059] The fixing structure includes a first fixed block arranged on the left side of the top of the base, a second fixed block is arranged on the right side of the top of the base and can slide left and right, a diagonal clamping disk is arranged on the side opposite to the first fixed block and can rotate, and a first motor is arranged on the left side of the top of the base for driving the left diagonal clamping disk to rotate.

[0060] A first screw rod is rotatably arranged on the inner side of the base, and the peripheral side of the first screw rod is threadedly connected to the bottom of the second fixed block. A rotating hand wheel is arranged at the right end of the first screw rod and on the right side of the base.

[0061] In this embodiment, the first screw is driven to rotate by rotating the handwheel, and then the second fixed block is driven to move to the right. When the two ends of the rotor are clamped to the inner sides of the diagonal clamping disks on both sides, the first screw is reversed to move the second fixed block to the left, thereby fixing the axial position of the rotation, and the rotor is completely fixed by the diagonal clamping disk.

[0062] Second embodiment:

[0063] See also Figure 1 and Figure 2 A magnetic base is provided on the inner side of the sliding frame, a micrometer is provided at the bottom of the magnetic base, the probe at the bottom of the micrometer is located at the top of the rotor, and a range ruler is provided on the front of the sliding frame.

[0064] In this embodiment, the magnetic gauge base is directly magnetically attached to the inner side of the sliding frame, and the sliding frame and the base are not in contact. This prevents vibration generated by the rotor during rotation from being transmitted to the sliding frame and affecting the dial indicator. A range scale is also provided to record measurement data of points during the left and right shift of the dial indicator. The first motor rotates the rotor slowly, recording data every 30° and averaging the values ​​for five consecutive revolutions. The runout is calculated (maximum value minus minimum value), and the high point (lighter mass side) is marked.

[0065] Third embodiment:

[0066] See also Figure 1 、 Figure 4 and Figure 5The bottom of the movable frame is slidably connected to the top of the base, and a sliding frame is provided on the inner side of the movable frame so as to slide up and down. The inner side of the sliding frame is slidably connected to the top of the grinding device.

[0067] A first electrically-controlled telescopic rod is provided on the inner side of the mobile frame, and the telescopic end at the bottom of the first electrically-controlled telescopic rod is fixedly connected to the top of the sliding frame. A second electrically-controlled telescopic rod is provided on the inner side of the base and at the bottom of the back side of the mobile frame. A second screw rod is provided on the inner side of the sliding frame so as to be rotatable laterally. A second motor is provided at the left end of the second screw rod and located on the inner side of the sliding frame.

[0068] In this embodiment, after the rotor is inspected in conjunction with the detection step, the imbalance amount at a specific angle of a specific part of the rotor can be determined by calculating the measurement data. Based on the position recorded by the measuring scale, the grinding device is moved to the desired position by rotating the second screw, and the first electrically controlled telescopic rod is controlled to extend so that the height of the grinding head of the grinding device is adjusted, driving the rotor to rotate and grind on the 180° symmetrical side of the high point.

[0069] Please refer to the Figures 1 to 6 The working principle of the dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor provided by the present invention is as follows:

[0070] Step S1: Clamp and secure the rotor so that the rotor axis is aligned with the bearing axis, and the radial runout is ≤0.02 mm. The handwheel is rotated to drive the first screw, which in turn drives the second fixing block to move to the right. When both ends of the rotor are clamped to the inner sides of the diagonal clamping disks on both sides, the first screw is reversed to move the second fixing block to the left, thereby fixing the axial position of the rotation. The rotor is completely secured by the diagonal clamping disks.

[0071] Step S2: By adjusting the left and right position of the magnetic stand and using a scale, the measurement data of the micrometer position can be recorded during the left and right shift of the micrometer. The rotor is slowly rotated by the first motor, and data is recorded every 30°. The average value is taken for 5 consecutive revolutions. The runout is calculated (maximum value - minimum value), and the high point (light weight side) is marked.

[0072] Step S3: Calculate the obtained measurement data to determine the specific angle of the specific part of the rotor where the imbalance occurs. According to the position recorded by the measuring scale, the second screw is rotated to drive the grinding device to the desired position. The first electrically controlled telescopic rod is controlled to extend to adjust the height of the grinding head of the grinding device, and the rotor is driven to rotate and grind on the side 180° symmetrical to the high point.

[0073] Step S4: Repeat the test and keep the rotor surface clean.

[0074] Compared with related technologies, the dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor provided by the present invention has the following beneficial effects:

[0075] The two fixing blocks can quickly and conveniently fix the rotor, while ensuring that the rotor axis and the bearing axis are integrated. The micrometer and range ruler make the dynamic balance data of the rotor quantifiable. Combined with the actual grinding degree obtained after recording and calculation, the grinding device is controlled to effectively grind the circumference of the rotor. After optimization, the rotor airflow pulsation is reduced, reducing the adverse effects on other components.

[0076] The above description is only a preferred embodiment of the present invention and does not limit the patent scope of the present invention. All equivalent structural transformations made by using the contents of the present invention description and drawings under the concept of the present invention, or direct / indirect application in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor, characterized in that: The following steps are involved: S1. Fixation steps: Ensure that the rotor is stably clamped without looseness or deformation; After clamping, the initial radial runout inspection is carried out to <0.02mm; S2. Detection steps: Measure the rotor runout and determine the imbalance position; Use the dial gauge method to test it. The dial gauge probe needs to touch the outer circle of the rotor vertically, preload 0.2-0.5mm, rotate the rotor slowly, record the data every 30°, and take the average value of multiple rotations; S3, grinding steps: Correct the imbalance by removing weights; Use a grinding wheel to grind the unbalanced part of the rotor. The single grinding should be ≤0.1mm. S4. Re-examination steps: Retest to ensure the optimization is effective; The rotor needs to be cleaned to avoid interference from grinding debris.

2. The dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor according to claim 1, characterized in that: In the step S1 , when fixing the rotor, a base and a fixing structure are required.

3. The dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor according to claim 2, characterized in that: When inspecting the rotor in step S2, a sliding frame, a magnetic gauge stand, and a micrometer are required.

4. The dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor according to claim 1, characterized in that: When grinding the rotor in step S3, a base, a movable frame, and a grinding device are required.

5. The dynamic balancing optimization method for a high-temperature resistant automobile metal exhaust rotor according to claim 2, characterized in that: The fixing structure includes a first fixing block arranged on the left side of the top of the base, a second fixing block is arranged on the right side of the top of the base and can slide left and right, a diagonal clamping disk is arranged on the side opposite to the first fixing block and can be rotated, and a first motor is arranged on the left side of the top of the base for driving the diagonal clamping disk on the left side to rotate.

6. The method for dynamic balancing optimization of a high-temperature resistant automobile metal exhaust rotor according to claim 5, characterized in that: A first screw rod is rotatably arranged on the inner side of the base, and the peripheral side surface of the first screw rod is threadedly connected to the bottom of the second fixed block. A rotating hand wheel is arranged at the right end of the first screw rod and on the right side of the base.

7. The method for dynamic balancing optimization of a high-temperature resistant automobile metal exhaust rotor according to claim 3, characterized in that: A magnetic meter base is provided on the inner side of the sliding frame, a micrometer is provided on the bottom of the magnetic meter base, a probe at the bottom of the micrometer is located on the top of the rotor, and a range ruler is provided on the front side of the sliding frame.

8. The method for dynamic balancing optimization of a high-temperature resistant automobile metal exhaust rotor according to claim 4, characterized in that: The bottom of the movable frame is slidably connected to the top of the base, and a sliding frame is provided on the inner side of the movable frame so as to slide up and down. The inner side of the sliding frame is slidably connected to the top of the grinding device.

9. The method for dynamic balancing optimization of a high-temperature resistant automobile metal exhaust rotor according to claim 8, characterized in that: A first electrically-controlled telescopic rod is provided on the inner side of the mobile frame, and the telescopic end at the bottom of the first electrically-controlled telescopic rod is fixedly connected to the top of the sliding frame. A second electrically-controlled telescopic rod is provided on the inner side of the base and at the bottom of the back side of the mobile frame. A second screw rod is provided on the inner side of the sliding frame so as to be rotatable laterally. A second motor is provided on the left end of the second screw rod and located on the inner side of the sliding frame.

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