A method for adjusting the centering of a device output shaft and a product input shaft

Abstract

The present invention relates to a method for centering and adjusting the output shaft of an equipment and the input shaft of a product, and is used for the rapid centering and adjusting the input shaft of a main reducer and the connecting shaft of a high-speed gearbox; the centering tooling used in the present invention includes a first dial indicator and a second dial indicator; during installation, the fixed end of the base of the first dial indicator is fixed on the output shaft of the high-speed gearbox, the first dial indicator head contacts the end face of the diaphragm disc shaft, the second dial indicator is installed on the diaphragm disc-gear coupling through a bracket, and the second dial indicator head contacts the sealing mounting surface of the main reducer input shaft; wherein the second dial indicator head and the first dial indicator head are in the same plane and perpendicular to each other. By calculating the angular deviation of the axis of the main reducer input shaft and the output shaft of the high-speed gearbox of the test bench, a theoretical basis and guidance are provided for adjusting the angular deviation of the two within a reasonable range.

Description

Technical Field

[0001] The invention relates to a high-speed shaft alignment calculation method, which is used for fast alignment of a main reducer input shaft and a high-speed gearbox connecting shaft. Background Art

[0002] At present, many aviation products need to undergo a series of tests before delivery or after repair to ensure the use requirements of the products. For the main reducer of the aviation transmission system, according to the product assembly requirements, before the test, the angular deviation between the axis of the main reducer input shaft and the output shaft of the test bench high-speed gearbox should be less than 4', which has high requirements for the tools and methods used for centering; in the currently disclosed patents, such as patent CN109668530A, a method and device for centering detection of shaft and shaft hole are proposed. The shaft and shaft hole alignment detection method of the present invention comprises the following steps: S1, emitting laser from the opposite side of the active shaft connection flange and shooting it toward the active shaft connection flange to obtain the detection center of the active shaft connection flange; S2, setting an extension tool and a light receiving element on the active shaft connection flange; one end of the light receiving element is installed on the extension tool and the axis of the active shaft connection flange passes through the light receiving element, and the laser is projected onto the light receiving element to obtain the center of the extension point; S3, placing the light receiving element at multiple points on the axis of the shaft hole in sequence, and the laser is projected onto the light receiving element, and the light receiving element rotates the driven shaft support structure along the circumferential direction of the inner wall of the shaft hole, and the center of the shaft hole detection point at the corresponding point is respectively presented on the light receiving element; S4, comparing the coincidence degree of the main shaft axis and the axis of the shaft hole. This alignment method is realized by mechanical matching optical detection, and can achieve accurate alignment, but it needs to cooperate with other optical detection equipment, and the operation is cumbersome. Summary of the invention

[0003] The present invention proposes a method for aligning and adjusting an output shaft of an equipment and an input shaft of a product. The method first designs an alignment tool and installs and positions the alignment tool, calculates the angular deviation of the axis of the input shaft of a main reducer and the output shaft of a high-speed gearbox of a test bench, and adjusts the input shaft of the main reducer and the output shaft of the high-speed gearbox of the test bench in reverse based on the calculated angular deviation until the angular deviation is within the design requirement range.

[0004] The measured value of the centering fixture provides a theoretical basis and guidance for adjusting the angular deviation of the two to a reasonable range. The centering fixture is installed with two dial indicators, and the centering adjustment can be completed using a fully mechanical form.

[0005] In the first aspect, the present invention provides an installation method of a centering tool, wherein the centering tool comprises a first dial indicator and a second dial indicator; during installation, the fixed end of the base of the first dial indicator is fixed on the output shaft of the high-speed gearbox, the first dial indicator head contacts the end face of the diaphragm shaft, the second dial indicator is installed on the diaphragm-gear coupling through a bracket, and the second dial indicator head contacts the seal mounting surface of the main reducer input shaft; wherein the second dial indicator head and the first dial indicator head are on the same plane and are perpendicular to each other.

[0006] Preferably, the first dial indicator base is a magnetic base; there is sufficient adsorption force between the magnetic base and the output shaft of the high-speed gearbox, thereby ensuring the stability of the dial indicator.

[0007] Preferably, the second dial indicator is a lever indicator; the dial indicator is fixed to the coupling and adopts a lever-shaped meter stand to facilitate adjustment of the posture of the dial indicator.

[0008] Preferably, the dial indicator should be a digital dial indicator, which is convenient and accurate to read.

[0009] Preferably, the initial positions of the first dial indicator and the second dial indicator should be vertical or horizontal.

[0010] In a second aspect, the present invention provides a method for calculating the angular deviation between the axis of the main reducer input shaft and the axis of the test bench high-speed gearbox output shaft, the method comprising:

[0011] After the centering tooling is installed as required, perform the shaft operation, rotate the membrane shaft for one circle, and record the readings when the first and second dial indicator heads are at the first angle, second angle, third angle, and fourth angle respectively. The four selected angles can be set randomly; calculate the angular deviation between the output shaft of the equipment and the input shaft of the product through the four groups of readings;

[0012] The calculation formula is: True deviation:

[0013] Δδ1=(ΔT d1 -ΔT r1 ) / 2

[0014] Δδ2=(ΔT d2 -ΔT r2 ) / 2

[0015] Δδ 180° =(ΔT d3 -ΔT r3 ) / 2

[0016] Δδ 270° =(ΔT d4 -ΔT r4 ) / 2

[0017] Angular deviation:

[0018] Φ 1—3 =(Δδ1-Δδ3) / L

[0019] Φ 2—4 =(Δδ2-Δδ4) / L.

[0020] In the above calculation method, ΔTr is the radial runout of the diaphragm shaft at different angles, which is read by the first dial indicator; L is the length of the intermediate shaft, which is a fixed value of the real object; ΔTd is the end face runout of the main reducer input shaft seal installation surface, which is read by the second dial indicator; D is the end face runout dialing scale circle diameter, that is, the main reducer input shaft seal installation surface diameter;

[0021] Specifically, when the left high-speed box and the left input shaft end face of the final reducer are at the first angle, the value of the measuring point is recorded as ΔT d1 ;

[0022] When the left high-speed box and the left input shaft end face of the main reducer are at the second angle, the value of this measuring point is recorded as ΔT d2 ;

[0023] When the left high-speed box and the left input shaft end face of the main reducer are at the third angle, the value of this measuring point is recorded as ΔT d3 ;

[0024] When the left high-speed box and the left input shaft end face of the final reducer are at the fourth angle, the value of this measuring point is recorded as ΔT d4 ;

[0025] When the left high-speed box and the left input shaft of the main reducer are at the first radial angle, the value of this measuring point is recorded as ΔT r1 ;

[0026] When the left high-speed box and the left input shaft of the main reducer have the second radial angle, the value of this measuring point is recorded as ΔT r2 ;

[0027] When the left high-speed box and the left input shaft of the main reducer are at the third radial angle, the value of this measuring point is recorded as ΔT r3 ;

[0028] When the left high-speed box and the left input shaft of the main reducer are at the fourth radial angle, the value of this measuring point is recorded as ΔT r4 ;

[0029] When the right high-speed box and the right input shaft end face of the main reducer are at the first angle, the value of this measuring point is recorded as ΔT D1 ;

[0030] When the right high-speed box and the right input shaft end face of the main reducer are at the second angle, the value of this measuring point is recorded as ΔT D2 ;

[0031] When the right high-speed box and the right input shaft end face of the main reducer are at the third angle, the value of this measuring point is recorded as ΔT D3 ;

[0032] When the right high-speed box and the right input shaft end face of the main reducer are at the fourth angle, the value of this measuring point is recorded as ΔT D4 ;

[0033] When the right high-speed box and the right input shaft of the main reducer are at the first radial angle, the value of this measuring point is recorded as ΔT R1 ;

[0034] When the right high-speed box and the right input shaft of the main reducer are at the second radial angle, the value of this measuring point is recorded as ΔT R2 ;

[0035] When the right high-speed box and the right input shaft of the main reducer are at the third radial angle, the value of this measuring point is recorded as ΔT R3 ;

[0036] When the right high-speed box and the right input shaft of the main reducer are at the fourth radial angle, the value of this measuring point is recorded as ΔT R4 .

[0037] To sum up, the high-speed shaft alignment method of the present invention is simple in calculation, clear in principle, and has high practicality and reliability. It meets the calculation requirements of high-speed shaft alignment and provides a theoretical basis for high-speed shaft alignment. The centering tooling is easy to install and easy to operate, and can complete the high-speed shaft centering operation with high efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] Figure 1 It is a schematic diagram of the centering adjustment of the present invention. DETAILED DESCRIPTION

[0039] To further describe the present invention, the following is a schematic diagram.

[0040] like Figure 1 As shown, a, high-speed gearbox output shaft, b, main reducer input shaft seal installation surface, c, diaphragm-gear coupling, d, first dial indicator, e, dial indicator bracket, f, second dial indicator,

[0041] When implementing the centering positioning, the above-mentioned centering auxiliary mechanism is installed, wherein the fixed end of the base of the first dial indicator d is fixed on the output shaft a of the high-speed gearbox; the head of the first dial indicator d contacts the end face of the diaphragm shaft, the dial indicator bracket e is installed on the diaphragm-gear coupling c, and the dial indicator bracket e is connected to the second dial indicator f; the head of the second dial indicator f contacts the seal mounting surface b of the main reducer input shaft; during the installation process, it is necessary to ensure that the fixed end of the base of the second dial indicator f and the fixed end of the base of the first dial indicator d are kept on the same horizontal line.

[0042] After the centering fixture designed above is installed as required, the disk shaft operation is performed, and the membrane disk shaft is rotated to 0°, 90°, 180°, and 270°. Several iconic angle positions are selected for later calculation and inspection, and four sets of values ​​when the digital display is at the four positions are measured and recorded respectively;

[0043] The parameters that need to be known in the calculation method are radial runout ΔTr, which is the value measured by the first dial indicator d;

[0044] The parameters that need to be known in the calculation method are the middle axis length L, which is a fixed value of the actual object;

[0045] The parameters that need to be known in the calculation method are the end face runout ΔTd, which is the value measured by the second dial indicator f;

[0046] The parameters that need to be known in the calculation method are the end face runout dial index circle diameter D, which is the diameter of the main reducer input shaft seal mounting surface b;

[0047] The points measured by the calculation method are numbered:

[0048] Among them, when the left high-speed box and the left input shaft end face of the main reducer are 0°, the value of this measuring point is recorded as Δ T d1 ;

[0049] When the left high-speed box and the left input shaft end face of the main reducer are 90°, the value of this measuring point is recorded as ΔT d2 ;

[0050] When the left high-speed box and the left input shaft end face of the final reducer are 180° apart, the value of this measuring point is recorded as ΔT d3 ;

[0051] When the left high-speed box and the left input shaft end face of the main reducer are 270 degrees, the value of this measuring point is recorded as ΔT d4 ;

[0052] When the radial angle between the left high-speed box and the left input shaft of the main reducer is 0°, the value of this measuring point is recorded as ΔT r1 ;

[0053] When the left high-speed box and the left input shaft of the main reducer are at a radial angle of 90°, the value of this measuring point is recorded as ΔT r2 ;

[0054] When the left high-speed box and the left input shaft of the main reducer are 180° apart in radial direction, the value of this measuring point is recorded as ΔT r3 ;

[0055] When the radial angle between the left high-speed box and the left input shaft of the main reducer is 270°, the value of this measuring point is recorded as ΔT r4 ;

[0056] When the right high-speed box and the right input shaft end face of the main reducer are 0°, the value of this measuring point is recorded as ΔT D1 ;

[0057] When the right high-speed box and the right input shaft end face of the main reducer are 90°, the value of this measuring point is recorded as ΔT D2 ;

[0058] When the right high-speed box and the right input shaft end face of the main reducer are 180°, the value of this measuring point is recorded as ΔT D3 ;

[0059] When the right high-speed box and the right input shaft end face of the main reducer are 270 degrees, the value of this measuring point is recorded as ΔT D4 ;

[0060] When the radial angle between the right high-speed box and the right input shaft of the main reducer is 0°, the value of this measuring point is recorded as ΔT R1 ;

[0061] When the right high-speed box and the right input shaft of the main reducer are at a radial angle of 90°, the value of this measuring point is recorded as ΔT R2 ;

[0062] When the right high-speed box and the right input shaft of the main reducer are 180 degrees apart in radial direction, the value of this measuring point is recorded as ΔT R3 ;

[0063] When the radial angle between the right high-speed box and the right input shaft of the main reducer is 270°, the value of this measuring point is recorded as ΔT R4 ;

[0064] The calculation method described above takes the left high-speed box and the left input shaft end face of the final reducer as an example, and the calculation method is as follows:

[0065] The actual deviation:

[0066] Δδ 0° =(ΔT d1 -ΔT r1 ) / 2

[0067] Δδ 90° =(ΔT d2 -ΔT r2 ) / 2

[0068] Δδ 180° =(ΔT d3 -ΔT r3 ) / 2

[0069] Δδ 270° =(ΔT d4 -ΔT r4 ) / 2

[0070] Angular deviation:

[0071] φ 0°—180° =(Δδ 0° -Δδ 180° ) / L

[0072] φ 90°—270° =(Δδ 90° -Δδ 270° ) / L.

[0073] In actual calculation, four specific angular positions are selected to facilitate calculation and inspection. After calculation by the angular deviation formula, the angular deviation between the positions measured by the first dial indicator d and the second dial indicator f can be calculated and compared with the specified range value to determine whether the next centering operation is required. The centering tooling and centering method proposed in the present invention are used, and the calculation results provide a theoretical basis and guidance for adjusting the angular deviation between the input shaft of the main reducer and the output shaft of the high-speed gearbox of the test bench to a reasonable range.

[0074] It should be noted that the centering tool and centering method disclosed herein should include various components, features and functions when the specific angle is used. The components and assembly methods for realizing basic functions that are not detailed are all considered to be feasible conventional technologies. It should be understood that the implementation forms of the centering tool and method disclosed herein can include any combination of methods, such as several specific implementation angle positions. In principle, the methods of realizing centering positioning by simple changes of other angles should be considered as design solutions equivalent to the present invention, and these changes and implementations all fall within the scope of the present invention.

Claims

1. A method for centering and adjusting the output shaft of a device and the input shaft of a product, characterized in that: The method first designs a centering tool, installs and positions the centering tool, calculates the angular deviation of the axis of the main reducer input shaft and the test bench high-speed gearbox output shaft, and reversely adjusts the main reducer input shaft and the test bench high-speed gearbox output shaft based on the calculated angular deviation until the angular deviation is within the design requirement range; the centering tool at least includes a first dial indicator and a second dial indicator; during installation, the fixed end of the base of the first dial indicator is fixed on the high-speed gearbox output shaft, the first dial indicator head contacts the end face of the diaphragm disc shaft, the second dial indicator is installed on the diaphragm disc-gear coupling through a bracket, and the second dial indicator head contacts the main reducer input shaft seal installation surface; wherein the second dial indicator head and the first dial indicator head are on the same plane and perpendicular to each other; The calculation process of angular deviation is: After the centering tooling is installed as required, perform the shaft operation, rotate the membrane shaft for one circle, and record the readings when the first and second dial indicator heads are at the first angle, second angle, third angle, and fourth angle respectively; calculate the angular deviation between the equipment output shaft and the product input shaft through the four sets of readings; The calculation formula is: True deviation: Δδ1=(ΔT d1 -ΔT r1 ) / 2 Δδ2=(ΔT d2 -ΔT r2 ) / 2 Δδ3=(ΔT d3 -ΔT r3 ) / 2 Δδ4=(ΔT d4 -ΔT r4 ) / 2 Angular deviation: F 1—3 =(Δδ1-Δδ3) / L F 2—4 =(Δδ2-Δδ4) / L; Among them, ΔTr is the radial runout of the diaphragm shaft at different angles, which is read by the first dial indicator; L is the length of the intermediate shaft, which is a fixed value of the actual object; ΔTd is the end face runout of the main reducer input shaft seal installation surface at different angles, which is read by the second dial indicator; When the left high-speed box and the left input shaft end face of the main reducer are at the first angle, the value of this measuring point is recorded as ΔT d1 ; When the left high-speed box and the left input shaft end face of the main reducer are at the second angle, the value of this measuring point is recorded as ΔT d2 ; When the left high-speed box and the left input shaft end face of the final reducer are at the third angle, the value of this measuring point is recorded as ΔT d3 ; When the left high-speed box and the left input shaft end face of the final reducer are at the fourth angle, the value of this measuring point is recorded as ΔT d4 ; When the left high-speed box and the left input shaft of the main reducer are at the first radial angle, the value of this measuring point is recorded as ΔT r1 ; When the left high-speed box and the left input shaft of the main reducer are at the second radial angle, the value of this measuring point is recorded as ΔT r2 ; When the left high-speed box and the left input shaft of the main reducer are at the third radial angle, the value of this measuring point is recorded as ΔT r3 ; When the left high-speed box and the left input shaft of the main reducer are at the fourth radial angle, the value of this measuring point is recorded as ΔT r4 ;.

2. The method for centering the output shaft of the equipment and the input shaft of the product according to claim 1, characterized in that: The first dial indicator base is a magnetic base; there is sufficient adsorption force between the magnetic base and the output shaft of the high-speed gear box.

3. The method for centering the output shaft of the equipment and the input shaft of the product according to claim 1, characterized in that: The second dial indicator is a lever indicator; the dial indicator is fixed on the coupling.

4. The method for centering and adjusting the output shaft of the equipment and the input shaft of the product according to claim 1, characterized in that: The initial positions of the first and second dial indicators should be vertical or horizontal.

5. The method for centering and adjusting the output shaft of the equipment and the input shaft of the product according to claim 4, characterized in that: Both dial indicators are digital.

6. The method for centering and adjusting the output shaft of the equipment and the input shaft of the product according to claim 1, characterized in that: The four different angles, namely, the first angle, the second angle, the third angle and the fourth angle, correspond to rotating the film disc axis to 0°, 90°, 180° and 270° respectively.

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