High-precision installation alignment method for diaphragm coupling

Abstract

The invention relates to the field of diaphragm couplings, in particular to a high-precision mounting alignment method for a diaphragm coupling, which comprises the following steps: S1, processing a tool mounting hole in the diaphragm coupling; s2, processing spacer sleeves: processing the axial sizes of the spacer sleeves according to a theoretical axial distance d at a diaphragm body, and processing and grinding all the spacer sleeves at the same time to improve the consistency of the excircle sizes and the axial sizes of all the spacer sleeves; s3, a spacer sleeve is installed; s4, measuring the axial size of the diaphragm coupling; s5, measuring the dynamic balance of the diaphragm coupling; s6, measuring the thickness of the adjusting pad; s7, reserving an installation distance; s8, measuring the actual installation distance; s9, performing match grinding on the thickness of the adjusting pad; and S10, overall installation is carried out. The diaphragm coupling has the effect of being beneficial to meeting the high-precision mounting requirement of the diaphragm coupling in a specific use environment.

Description

Technical Field

[0001] The present application relates to the field of diaphragm couplings, and in particular to a high-precision installation and alignment method for diaphragm couplings. Background Art

[0002] Diaphragm coupling is a kind of coupling that transmits power and torque through a thin plate group made of alloy steel. It has been widely used due to its small mass, no need for lubrication, simple structure, easy disassembly and assembly, strong adaptability and other advantages.

[0003] The additional load introduced to the rotor system by coupling misalignment will be coupled with the load applied to the rotor system in the reliability test, making the loading complicated and inaccurate and causing greater vibration in the system.

[0004] The conventional installation method of the diaphragm coupling is to install it according to the installation distance (usually in millimeters) required by the diaphragm coupling drawing. This installation method can meet the general use requirements of the diaphragm coupling. However, due to the axial installation error, this method often causes the diaphragm to bend and deform along the axis. When the diaphragm coupling is used in equipment with high requirements for vibration indicators, or in high-speed and heavy-load conditions that require high installation accuracy of transmission system components, if the diaphragm coupling has poor axial installation accuracy, the diaphragm is initially in a compressed or tensile state or in a bent state, and the equipment at both ends of the coupling has no forced limit structure in the axial direction, it will have a relatively adverse effect on the vibration characteristics of the equipment at both ends of the diaphragm coupling or the transmission system.

[0005] Therefore, in view of the high-precision installation requirements of the diaphragm coupling in the specific use environment, it is necessary to further optimize and improve the installation and alignment method of the diaphragm coupling. Summary of the invention

[0006] In order to meet the high-precision installation requirements of a diaphragm coupling in a specific usage environment, the present application provides a high-precision installation and alignment method for a diaphragm coupling.

[0007] The high-precision installation and alignment method of a diaphragm coupling provided in this application adopts the following technical solution: A high-precision installation and alignment method for a diaphragm coupling comprises the following steps: S1. Process the tooling installation holes on the diaphragm coupling: ① The intermediate shaft section is processed into a through hole, and the coupling mounting flange is processed into a threaded hole with the same distribution circle as the through hole, and the through hole and the threaded hole are staggered from the radial outer contour of the diaphragm body; ② If the above-mentioned through holes and threaded holes already exist on the diaphragm coupling, the position of all the through holes and threaded holes is measured. If the position meets the requirements, the existing through holes and threaded holes are used. Otherwise, the diaphragm coupling is rotated by a certain angle and the through holes and threaded holes are reprocessed according to step ①; S2. Processing the distance sleeve: processing the axial dimension of the distance sleeve according to the axial distance d of the diaphragm body, processing and grinding all the distance sleeves at the same time, and improving the consistency of the outer circle dimension and axial dimension of all the distance sleeves; S3. Install the distance sleeve: ① Weigh the distance sleeve and the screw in pairs. One distance sleeve and one screw are a component. The weight of the component is adjusted by grinding the outer circle of the distance sleeve and the screw to ensure that the weight difference between the components is ≤0.1g; ② Install the distance sleeve between the diaphragm intermediate shaft section and the diaphragm coupling mounting flange, and make the two ends of the distance sleeve connected to the through hole and the threaded hole respectively, and screws pass through the through hole, the distance sleeve and the threaded hole in sequence to make the diaphragm coupling form a rigid whole; S4. Axial dimension measurement of diaphragm coupling: After installing the distance sleeve, use a high-precision caliper to measure the overall length S of the diaphragm coupling; S5. Dynamic balance measurement of diaphragm coupling: When the distance sleeve is installed, measure the overall dynamic balance of the diaphragm coupling and adjust the diaphragm coupling to remove the imbalance; S6. Measure the thickness of the adjustment pad: measure the thickness of the adjustment pad at 8 evenly spaced points, and take the minimum value as h0; S7, reserved installation distance: when the first equipment mounting flange and the second equipment mounting flange are radially and end-to-end centered according to the technical requirements, the installation distance L0 between the first equipment mounting flange and the second equipment mounting flange is reserved and fixed according to the actual axial measurement dimension S of the diaphragm coupling and the thickness h0 of the adjustment pad; S8. Measure the actual installation distance: measure the actual installation distance between the first equipment installation flange and the second equipment installation flange, and take the average as the actual installation distance L; S9, grinding adjustment pad thickness: according to the actual installation distance L, the actual coupling axial measurement size S, the grinding adjustment pad thickness h = LS; S10, overall installation: The first equipment mounting flange, the diaphragm coupling and the second equipment mounting flange are fixedly connected in sequence by fixing bolts to form an integral part, and the distance sleeve and the screws are removed during the installation and operation of the integral part.

[0008] Optionally, in step S1, the positioning accuracy of the through hole and the threaded hole is less than 0.05 mm.

[0009] Optionally, in step S2, the axial dimension of the distance sleeve is controlled within the theoretical dimension d±0.05 mm.

[0010] Optionally, in step S4, a high-precision caliper is used to measure the overall length S of the diaphragm coupling, specifically: 8 measurement points evenly distributed around the circumference of the diaphragm coupling are measured and recorded, the difference in the 8 measured dimensions is ≤0.05mm, and the average of the 8 measured dimensions is calculated; if the difference in the 8 measured dimensions is >0.05mm, the diaphragm coupling is disassembled, and the parallelism accuracy of the intermediate shaft section and the coupling mounting flange is inspected respectively, and repaired as appropriate.

[0011] Optionally, in step S7, L0=S+h0 (0-0.5).

[0012] Optionally, in step S8, when measuring the actual installation distance between the first device mounting flange and the second device mounting flange, 8 measurement points are evenly distributed in the circumferential direction of the diaphragm coupling.

[0013] Optionally, in step S9, after the adjustment pad is worn, the actual thickness of the adjustment pad is measured, and 8 measurement points evenly distributed around the circumference of the adjustment pad are measured and recorded, and the measured dimensional difference at 8 points of the adjustment pad is ≤0.03 mm.

[0014] In summary, the present application includes at least one of the following beneficial technical effects: 1. The method proposed in this application can accurately measure the actual installation distance L and the actual length S of the diaphragm coupling, which helps to keep the installation space L at both ends of the diaphragm coupling consistent with the actual length (S+h) of the diaphragm coupling with high precision, thereby improving the axial installation accuracy of the diaphragm coupling.

[0015] 2. The axial dimension d of the distance sleeve is precisely controlled according to the axial dimension of the diaphragm body of the diaphragm coupling.

[0016] 3. Accurately measure the actual installation dimension S of the diaphragm coupling by installing the tooling distance sleeve.

[0017] 4. Install the distance sleeve to make the diaphragm coupling an integral rigid component, and perform overall dynamic balancing on the diaphragm coupling; before dynamic balancing, use the distance sleeve to counterweight and ensure the position accuracy of the through holes and threaded holes to reduce the influence of the distance sleeve and screws on the dynamic balance of the diaphragm coupling, thereby improving the operating accuracy of the diaphragm coupling.

[0018] 5. An adjustment pad is provided, and the axial distance is precisely adjusted by grinding the thickness h of the adjustment pad. Compared with the solution without the adjustment pad, the axial installation distance L between the first equipment mounting flange and the second equipment mounting flange is directly controlled to be equal to the coupling length S, which reduces the difficulty of installation and centering, and the installation accuracy is more controllable.

[0019] 6. A method of using caliper measuring tools to evenly measure the length of the diaphragm coupling and the thickness of the adjustment pad at multiple points is proposed to evaluate and control the accuracy of the diaphragm coupling itself and the parallelism of the adjustment pad, which effectively improves the installation and operation accuracy of the coupling. This method is simple, reliable and highly practical. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a flow chart of a high-precision installation and alignment method of a diaphragm coupling according to an embodiment of the present application.

[0021] Figure 2 It is a schematic diagram of the connection structure of the first device mounting flange, the diaphragm coupling and the second device mounting flange in an embodiment of the present application.

[0022] Figure 3 yes Figure 2 Enlarged view of point A in the middle.

[0023] Explanation of the accompanying drawings: 1. First equipment mounting flange; 2. Adjustment gasket; 3. Fixing bolt; 4. Distance sleeve; 5. Screw; 6. Diaphragm coupling; 61. Intermediate shaft section; 62. Diaphragm body; 63. Coupling mounting flange; 64. Through hole; 65. Threaded hole; 7. Second equipment mounting flange. DETAILED DESCRIPTION

[0024] The following is combined with Figure 1-3 This application is described in further detail.

[0025] The present application embodiment discloses a high-precision installation and alignment method for a diaphragm coupling. Figure 1-3 The high-precision installation and alignment method of the diaphragm coupling includes the following steps: S1. Process the tooling installation hole on the diaphragm coupling 6: ① The diaphragm coupling 6 is decomposed into an intermediate shaft section 61, two diaphragm bodies 62 and two coupling mounting flanges 63. The two coupling mounting flanges 63 are respectively located at the two ends of the intermediate shaft section 61, and the diaphragm body 62 is correspondingly located between the end of the intermediate shaft section 61 and the coupling mounting flange 63. One part of the diaphragm body 62 is connected to the end of the intermediate shaft section 61 by bolts, and the other part of the diaphragm body 62 is connected to the coupling mounting flange 63 by bolts.

[0026] A through hole 64 is machined at the end of the intermediate shaft section 61, and a threaded hole 65 with the same distribution circle as the through hole 64 is machined on the coupling mounting flange 63. Before drilling, the same marking is performed to determine the angle zero point. Three holes are drilled at each end of the intermediate shaft section 61, and it is confirmed that the three holes can stagger the outer contour of the diaphragm body 62. 2×3×φ9mm holes are evenly drilled at both ends of the intermediate shaft section 61 (distribution circle is φ210mm), and 2×3×M8-7H holes are evenly drilled on the two coupling mounting flanges 63 (distribution circle is φ210mm), and the position accuracy is required to be less than φ0.05mm.

[0027] ② If the above-mentioned through holes 64 and threaded holes 65 already exist on the diaphragm coupling 6, the position of all through holes 64 and threaded holes 65 is measured. If the position meets the requirements, the existing through holes 64 and threaded holes 65 are used. Otherwise, the diaphragm coupling 6 is rotated by a certain angle and the through holes 64 and threaded holes 65 are reprocessed according to step ①. S2. Processing the distance sleeve 4: The theoretical dimension d=15mm is obtained when the diaphragm body 62 is designed. The axial dimension of the distance sleeve 4 is processed according to the theoretical axial distance d of the diaphragm body 62. The axial dimension of the distance sleeve 4 is φ15×φ9×15mm, and the axial dimension is controlled at 15±0.05mm. The outer circle of the distance sleeve 4 is processed by the same batch processing and then cutting method. The axial dimensions of the six groups of distance sleeves 4 are ground together to improve the consistency of the outer circle dimensions and axial dimensions of all distance sleeves 4. S3. Install the distance sleeve 4: ① Weigh the distance sleeve 4 and the screw 5 in pairs. Weigh and roughly balance the distance sleeve 4 and the screw 5. The weight difference between the distance sleeve 4 and the screw 5 is ≤0.5g. In addition, a distance sleeve 4 and a screw 5 are a component. The weight of the component is adjusted by grinding the outer circle of the distance sleeve 4 and the screw 5 to ensure that the weight difference between the components is ≤0.1g, and make matching marks; ② Install the distance sleeve 4 between the diaphragm intermediate shaft section 61 and the mounting flange of the diaphragm coupling 6, and make the two ends of the distance sleeve 4 communicate with the through hole 64 and the threaded hole 65 respectively, and the screw 5 passes through the through hole 64, the distance sleeve 4 and the threaded hole 65 in sequence, so that the diaphragm coupling 6 forms a rigid whole; S4, axial dimension measurement of diaphragm coupling 6: after installing the spacer sleeve 4, use a high-precision caliper to measure the overall length S of diaphragm coupling 6, measure and record 8 measurement points evenly distributed around the circumference of diaphragm coupling 6, the difference in the 8 measured dimensions is ≤0.05mm, and calculate the average of the 8 measured dimensions; if the difference in the 8 measured dimensions is >0.05mm, disassemble diaphragm coupling 6, test the parallelism accuracy of the intermediate shaft section 61 and the coupling mounting flange 63 respectively, and grind them as needed; the measured values ​​are 392.11, 392.13, 392.20, 392.20, 392.13, 392.12, 392.12, 392.11, in millimeters. Disassemble diaphragm coupling 6, and measure the intermediate shaft section 61 and coupling mounting flange 63 in three coordinates, and find that the shape and position accuracy is relatively low. The four surfaces of the intermediate shaft section 61, the coupling mounting flange 63 and the diaphragm coupling 6 are ground and repaired for parallelism based on the stop of the coupling mounting flange 63, and then the diaphragm coupling 6 is assembled. The axial length S of the diaphragm coupling 6 is measured again, which are 392.00, 392.00, 392.02, 392.02, 392.02, 392.04, 392.04, 392.04, in millimeters, and the value of S is 392.02mm.

[0028] S5. Dynamic balance measurement of diaphragm coupling 6: When the distance sleeve 4 is installed, the overall dynamic balance of the diaphragm coupling 6 is measured, the diaphragm coupling 6 is dynamically balanced according to the G1 level accuracy, and the diaphragm coupling 6 is adjusted to remove the unbalance; S6. Measure the thickness of the adjustment pad 2: Use a micrometer to measure the thickness of the adjustment pad 2 h0 at 8 points evenly distributed around the circumference: 25.375, 25.385, 25.390, 25.395, 25.385, 25.380, 25.375, 25.370, in millimeters. Take the minimum value as h0, which is 25.370 mm.

[0029] S7, reserved installation distance: radial and end face centering of the first equipment mounting flange 1 and the second equipment mounting flange 7 according to technical requirements, requiring radial runout ≤ 0.10mm, end face runout ≤ 0.08mm, reserved distance between the first equipment mounting flange 1 and the second equipment mounting flange 7 is controlled by L0 = S + h0 (0 -0.5), that is, L0 = 25.370 + 392.02 (0 -0.5), unit: mm, the first equipment mounting flange 1 is the variable frequency drive motor equipment mounting flange; S8. Measure the actual installation distance: take 8 measuring points evenly distributed in the circumferential direction of the diaphragm coupling 6, and measure the actual installation distance between the first equipment mounting flange 1 and the second equipment mounting flange 7. The results are 417.00, 417.02, 417.04, 417.06, 417.08, 417.06, 417.04, 417.02, in millimeters, respectively. The average value is taken as the actual installation distance L. The actual value of L is 417.04 mm. S9. Thickness of grinding adjustment pad 2: According to the actual installation distance L and the actual coupling axial measurement dimension S, the thickness of grinding adjustment pad 2 h=LS, and grinding is performed according to h of 25.02±0.01mm. After the grinding of adjustment pad 2 is completed, the actual thickness of adjustment pad 2 is measured, and 8 measurement points are evenly distributed on the circumference of adjustment pad 2 are measured and recorded. The difference in the measured dimensions at 8 points of adjustment pad 2 is ≤0.03mm; the thickness of adjustment pad 2 at 8 points evenly distributed on the circumference is: 25.010, 25.010, 25.015, 25.02, 25.02, 25.015, 25.01, 25.01, in millimeters, which meets the use requirements.

[0030] S10, overall installation: remove the distance sleeve 4 and the screw 5, and fix the first device mounting flange 1, the diaphragm coupling 6 and the second device mounting flange 7 in sequence through the fixing bolts 3 to form an integral part. The diaphragm coupling 6 has been correctly installed in the rotor system, and the high-precision installation and alignment of the diaphragm coupling 6 has been completed.

[0031] The above are all preferred embodiments of the present application, and the protection scope of the present application is not limited thereto. Therefore, any equivalent changes made according to the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A high-precision installation and alignment method for a diaphragm coupling, characterized in that: The steps include: S1. Process the tooling installation hole on the diaphragm coupling (6): ① The intermediate shaft section (61) is processed into a through hole (64), and the coupling mounting flange (63) is processed into a threaded hole (65) with the same distribution circle as the through hole (64), and the through hole (64) and the threaded hole (65) are staggered from the radial outer contour of the diaphragm body (62); ② If the diaphragm coupling (6) already has the above-mentioned through holes (64) and threaded holes (65), the positions of all the through holes (64) and threaded holes (65) are measured. If the positions meet the requirements, the existing through holes (64) and threaded holes (65) are used. Otherwise, the diaphragm coupling (6) is rotated by a certain angle and the through holes (64) and threaded holes (65) are re-processed in the manner of step ①. S2, processing the distance sleeve (4): processing the axial dimension of the distance sleeve (4) according to the axial distance d of the diaphragm body (62), processing and grinding all the distance sleeves (4) at the same time, so as to improve the consistency of the outer diameter and axial dimension of all the distance sleeves (4); S3. Install the distance sleeve (4): ① The distance sleeve (4) and the screw (5) are weighed in pairs. One distance sleeve (4) and one screw (5) are a component. The weight of the component is adjusted by grinding the outer circle of the distance sleeve (4) and the screw (5) to ensure that the weight difference between the components is ≤0.1g; ② Install the distance sleeve (4) between the diaphragm intermediate shaft section (61) and the mounting flange of the diaphragm coupling (6), and make the two ends of the distance sleeve (4) communicate with the through hole (64) and the threaded hole (65) respectively, and the screw (5) passes through the through hole (64), the distance sleeve (4) and the threaded hole (65) in sequence, so that the diaphragm coupling (6) forms a rigid whole; S4. Axial dimension measurement of the diaphragm coupling (6): After the spacer sleeve (4) is installed, use a high-precision caliper to measure the overall length S of the diaphragm coupling (6); S5. Dynamic balance measurement of the diaphragm coupling (6): When the spacer sleeve (4) is installed, the overall dynamic balance of the diaphragm coupling (6) is measured, and the diaphragm coupling (6) is adjusted to eliminate the imbalance; S6. Measure the thickness of the adjustment pad (2): measure the thickness of the adjustment pad (2) at 8 evenly spaced points, and take the minimum value as h0; S7, reserved installation distance: when the first equipment installation flange (1) and the second equipment installation flange (7) are radially and end-to-end aligned according to technical requirements, the installation distance L0 between the first equipment installation flange (1) and the second equipment installation flange (7) is reserved and fixed according to the actual axial measurement dimension S of the diaphragm coupling (6) and the thickness h0 of the adjustment pad (2); S8, measuring the actual installation distance: measuring the actual installation distance between the first equipment installation flange (1) and the second equipment installation flange (7), and taking the average value as the actual installation distance L; S9, thickness of the wear-matching adjustment pad (2): based on the actual installation distance L and the actual coupling axial measurement dimension S, the thickness of the wear-matching adjustment pad (2) h=LS; S10, integral installation: The first device mounting flange (1), the diaphragm coupling (6) and the second device mounting flange (7) are fixedly connected in sequence by means of fixing bolts (3) to form an integral part. During the installation and operation of the integral part, the distance sleeve (4) and the screws (5) are removed.

2. The high-precision installation and alignment method of a diaphragm coupling according to claim 1 is characterized in that: In the step S1, the position accuracy of the through hole (64) and the threaded hole (65) is less than 0.05 mm.

3. The high-precision installation and alignment method of a diaphragm coupling according to claim 1 is characterized in that: In the step S2, the axial dimension of the distance sleeve (4) is controlled within the theoretical dimension d±0.05 mm.

4. The high-precision installation and alignment method of a diaphragm coupling according to claim 1 is characterized in that: In step S4, the overall length S of the diaphragm coupling (6) is measured using a high-precision caliper, specifically by measuring and recording 8 measurement points evenly distributed around the circumference of the diaphragm coupling (6), the difference in the 8 measurements being ≤0.05 mm, and calculating the average of the 8 measurements; if the difference in the 8 measurements being >0.05 mm, the diaphragm coupling (6) is disassembled, and the parallelism accuracy of the intermediate shaft section (61) and the coupling mounting flange (63) is respectively tested, and repaired as appropriate.

5. The high-precision installation and alignment method of a diaphragm coupling according to claim 1 is characterized in that: In the step S7, L0=S+h0 (0-0.5).

6. The high-precision installation and alignment method of a diaphragm coupling according to claim 1 is characterized in that: In the step S8, when measuring the actual installation distance between the first equipment installation flange (1) and the second equipment installation flange (7), 8 measurement points are evenly distributed in the circumferential direction of the diaphragm coupling (6).

7. The high-precision installation and alignment method of a diaphragm coupling according to claim 1 is characterized in that: In the step S9, after the adjustment pad (2) is worn, the actual thickness of the adjustment pad (2) is measured, and 8 measurement points evenly distributed around the circumference of the adjustment pad (2) are measured and recorded, and the difference in the measured dimensions at the 8 points of the adjustment pad (2) is ≤0.03 mm.

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