A laser tracker method for measuring the swing of a coupling

Abstract

The present invention discloses a process method for measuring the swing of a coupling by a laser tracker. The method is to measure the swing of the coupling by a laser tracker, and adjust and re-measure the two axes according to the measurement data until the swing index requirements are met. The difficulty of finding the swing of a coupling lies in the fact that the shaft system has horizontal, vertical and inclined working conditions, the horizontal shaft system has deflection, the vertical shaft system has a high height, and the inclined shaft system has deflection and horizontal angle, which are inconvenient to measure and adjust. Traditional methods such as using a dial indicator to find the swing and using a hanging wire to find the swing often have difficulties in finding the swing due to being limited by the working conditions of the shaft, the connection method, and the inconvenience of measurement. Compared with the traditional methods of using a dial indicator to find the swing and using a hanging wire to find the swing, the present invention can well solve the problems of different working conditions of the shaft system and inconvenience of measurement, and make up for the limitations of the traditional methods. In addition, the method can be used for both rigid couplings and flexible couplings. The present invention has the characteristics of being easy to promote, simple to operate, accurate in measurement, and strong in versatility.

Description

Technical Field

[0001] The invention relates to a process method for finding the swing degree of a transmission shaft coupling in the mechanical field, and in particular to a process method for finding the swing degree of a horizontal, vertical and inclined shaft coupling of a hydraulic unit. Background Art

[0002] The spindle is a key component of hydraulic machinery. The swing of the segmented shafts at high-speed rotation affects the vibration and stability of the entire mechanical system. The spindle coupling swing adjustment is to adjust the axes of the segmented spindles to the same axis after connecting them, so as to avoid vibration caused by the angle and misalignment of the axis when the spindle rotates, which affects the life of the bearings in various parts. Therefore, the spindle coupling swing adjustment plays a key role in the performance and life of the mechanical system.

[0003] At present, the commonly used methods for finding the runout of the spindle coupling include setting up a dial indicator to find the runout and using a hanging wire to measure the runout. Due to the different operating conditions of the spindle, different coupling connection methods, and limited space, it is difficult to find the runout of the spindle coupling using traditional methods. At present, there is no process method or relevant experience in the industry to use laser tracker to measure the runout of the coupling.

[0004] In order to solve the above problems, it is necessary to introduce a laser tracker method for measuring the coupling swing, which is easy to promote, has a wide range of applications, high efficiency, simple operation and simple calculation. Summary of the invention

[0005] The purpose of the present invention is to provide a method for measuring the runout of a coupling by a laser tracker which is easy to promote, has a wide range of applications, is highly efficient, is easy to operate, and has simple calculations. The technical solution of the present invention is specifically described as follows:

[0006] Step 1: One end of the transmission shaft is connected to the load equipment, the middle section of the transmission shaft is supported by the bearing seat, and the other end of the transmission shaft is connected to the motor shaft through a coupling; the base of the motor has two-way adjustment screws in the X direction, two-way adjustment screws in the Y direction, and support screws in the Z direction, and the motor and the base plate are fixedly connected by fastening bolts; the bearing seat and the base plate are fixedly connected by fastening bolts; the laser tracker and the target ball are measuring devices, and the target ball seat is a device for fixing the target ball.

[0007] Step 2: There are two places where the laser tracker measures the transmission shaft. The first place is any AA section on the transmission shaft between the bearing seat and the load equipment, and the second place is any BB section on the coupling connected to the end of the transmission shaft. The AA and BB sections are divided into 16 equal parts and marked with serial numbers. The two target ball seats are glued and fixed at the same serial number positions of the two sections.

[0008] Step 3: There are two places where the laser tracker measures the motor shaft. The first place is any CC section on the coupling connected to the end of the motor shaft, and the second place is any DD section on the motor shaft protruding from the tail of the motor. The CC and DD measurement sections are divided into 16 equal parts and marked with serial numbers, and the two target ball seats are glued and fixed at the same serial number positions of the two sections.

[0009] Step 4: The target ball is magnetically adsorbed onto the four target ball seats in turn, and the transmission shaft and motor shaft are slowly rotated for dynamic measurement. When rotating to each equally divided serial point, the laser tracker collects the current position data of the target ball.

[0010] Step 5: Based on the collected AA and BB axis section data, the swing R of the transmission shaft axis in the XOY horizontal plane and the swing R in the XOZ vertical plane are obtained. 1 ;According to the collected CC and DD axis section data, the swing N of the motor shaft axis in the XOY horizontal plane and the swing N of the XOZ vertical plane are obtained. 1 ; Based on the collected shaft section data at both ends of the BB and CC couplings, the XOY horizontal plane concentricity difference P and XOZ vertical plane concentricity difference P at both ends of the coupling are obtained. 1 .

[0011] Step 6: Based on the obtained swing R of the XOY horizontal plane of the transmission shaft, the adjustment amount M and M of the swing N of the XOY horizontal plane of the motor shaft are calculated. 1 , so that the adjusted swing is consistent with R, and the concentricity difference P of the XOY horizontal plane at both ends of the coupling is minimized.

[0012] Step 7: Obtain the XOZ vertical plane swing R of the transmission shaft 1 As a reference, the swing N of the vertical plane of the motor axis XOZ is obtained by calculation. 1 Adjustment amount O and O 1 To meet the adjusted swing and R 1 The XOZ vertical plane concentricity difference P at both ends of the coupling is consistent. 1 Reach the minimum.

[0013] Step 8: According to the calculated adjustment amount M and M of the motor shaft on the XOY horizontal plane 1 , and the adjustment amount O and O of the motor shaft in the vertical direction of XOZ 1 , adjust the corresponding parts of the motor shaft according to the calculated adjustment amount.

[0014] In the above-mentioned laser tracker measurement method for coupling runout, the coupling in step 1 is applicable to a rigid coupling and a flexible coupling.

[0015] In the above-mentioned laser tracker measurement method for coupling runout, the working conditions of the transmission shaft and motor shaft in step 1 are applicable to horizontal, vertical and inclined states.

[0016] In the above-mentioned laser tracker measurement method for coupling runout, the shaft system composed of the transmission shaft and the motor shaft in step 1 is suitable for a shaft system composed of two shaft sections and a shaft system composed of multiple shaft sections.

[0017] In the above-mentioned laser tracker measurement method for coupling runout, the AA, BB, CC, and DD measurement sections of the transmission shaft and the motor shaft in step two and step three have a number of sections that ensure that each section of the shaft system consisting of multiple sections has at least two measurement sections.

[0018] In the above-mentioned laser tracker measurement method for coupling runout, the AA, BB, CC, and DD measurement sections of the transmission shaft and the motor shaft in step two and step three are each divided into 16 equal parts, and the number of equal parts of the section is suitable for 4 equal parts, 8 equal parts, 16 equal parts, and multiple equal parts.

[0019] In the above-mentioned laser tracker measurement method for coupling swing, the target ball position data collected by the laser tracker in step 4 is required to ensure that the number of data collected at the 16-equal-division positions of the measuring cross section AA, BB, CC, and DD is not less than 8, that is, the number of data collected at each cross section is not less than half of the cross section equal-division number.

[0020] In the above-mentioned laser tracker measurement method for coupling runout, the slowly rotating transmission shaft and motor shaft in step 4 are dynamically measured. When the shaft system does not have the conditions for rotation, the 16-equal-division positions of the four cross sections AA, BB, CC, and DD are measured with the main shaft static. That is, the 16-equal-division positions of each cross section are measured in turn by reversing the target ball, and the number of data collected at each cross section is not less than half of the cross section equal-division number.

[0021] In the above-mentioned laser tracker measurement method for finding the swing of the coupling shaft, the adjustment amount M and M of the swing N of the XOY horizontal plane of the motor shaft are calculated in step 6. 1 , motor axis XOY horizontal plane adjustment M and M 1 The calculation steps are as follows:

[0022] The swing R of the transmission shaft in the XOY horizontal plane measured by the laser tracker is used as the reference benchmark, combined with the swing N of the motor shaft in the XOY horizontal plane, the distance L from the motor shaft end to the front foot of the motor base, and the distance L from the motor shaft end to the rear foot of the motor base. 1 And the XOY horizontal plane concentricity difference P at both ends of the coupling is calculated, and the judgment formula is as follows:

[0023] M=(RN)xL-P

[0024] M 1 =(RN)xL 1 -P

[0025] Where:

[0026] M: Calculate the adjustment amount of the top screw on the front foot of the motor base on the XOY horizontal plane;

[0027] M 1 : Calculate the adjustment amount of the top screw when adjusting the rear foot of the motor base on the XOY horizontal plane;

[0028] R: The swing of the transmission shaft in the XOY horizontal plane is measured by the laser tracker;

[0029] N: The swing of the motor shaft in the XOY horizontal plane measured by the laser tracker;

[0030] L: The distance from the middle end face of the coupling to the front foot of the motor base;

[0031] L 1 : The distance from the middle end face of the coupling to the rear foot of the motor base;

[0032] P: The concentricity difference between the two ends of the coupling measured by the laser tracker on the XOY horizontal plane;

[0033] In the above-mentioned laser tracker measurement method for finding the swing of the coupling shaft, the swing N of the XOZ vertical plane of the motor shaft is calculated in step 7. 1 Adjustment amount O and O 1 , the swing of the motor shaft in the XOZ vertical plane N 1 Adjustment amount O and O 1 The calculation steps are as follows:

[0034] The XOZ vertical runout R of the transmission shaft measured by a laser tracker 1 As a reference, the swing N of the XOZ vertical plane of the motor shaft is 1 , the distance L from the motor shaft end to the front foot of the motor base and the distance L from the motor shaft end to the rear foot of the motor base 1 And the XOZ vertical plane concentricity difference P at both ends of the coupling 1 Calculate and determine the formula as follows:

[0035] O=(R 1 -N 1 )xL-P 1

[0036] O 1 =(R 1 -N 1 )xL 1 -P1

[0037] Where:

[0038] O: Calculated adjustment amount of the top screw of the front foot support of the motor base when facing the XOZ vertically;

[0039] O 1 : Calculate the adjustment amount of the top screw of the rear foot support facing the motor base vertically on XOZ;

[0040] R 1 : The laser tracker measures the swing of the transmission shaft in the XOZ vertical plane;

[0041] N 1 : The laser tracker measures the swing of the motor shaft in the XOZ vertical plane;

[0042] L: The distance from the middle end face of the coupling to the front foot of the motor base;

[0043] L 1 : The distance from the middle end face of the coupling to the rear foot of the motor base;

[0044] P 1 : The laser tracker measures the concentricity difference between the two ends of the coupling on the XOZ vertical plane;

[0045] Due to the adoption of the above method, the beneficial effects of the present invention are:

[0046] 1. By collecting and measuring the cross-section data of each shaft through a laser tracker, the axis swing of each shaft segment of the coupling and the concentric deviation value of the coupling segment can be accurately, reliably and efficiently obtained.

[0047] 2. Based on the axis swing of various shaft segments of the coupling measured by the laser tracker, the adjustment amount of the shaft segment that needs to be adjusted can be calculated simply and quickly.

[0048] 3. For working conditions that cannot be measured by rotating the shaft, the laser tracker can measure the shaft system's runout under static spindle conditions, and has strong compatibility with other working conditions.

[0049] 4. The present invention is the first to introduce a laser tracker to perform coupling alignment, which makes up for the shortcomings of traditional methods such as setting up a dial indicator to find the alignment and hanging a wire to find the alignment, which are difficult to apply under certain working conditions. It can also replace traditional alignment methods to a certain extent, has a wide range of applications, and can be extended to coupling alignment work in related mechanical fields. BRIEF DESCRIPTION OF THE DRAWINGS

[0050] Figure 1 This is a schematic diagram of the main shaft coupling in front view;

[0051] Figure 2 This is a top view diagram of the spindle coupling measured by the laser tracker;

[0052] Figure 3 This is a schematic diagram of the equally divided points of each axis section measured by the laser tracker. DETAILED DESCRIPTION

[0053] Specific implementation method 1: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment provides a method for measuring the swing of a coupling by using a laser tracker. Taking a horizontal shafting unit as an example, the specific operation steps are as follows:

[0054] Step 1: One end of the transmission shaft 1 is connected to the load device 13, the middle section of the transmission shaft is supported by the bearing seat 2, and the other end of the transmission shaft 1 is connected to the motor shaft 4 through the coupling 3; the base of the motor 5 has two-way adjustment screws 6 in the X direction, two-way adjustment screws 7 in the Y direction, and support screws 8 in the Z direction, and the motor 5 is fixedly connected to the base plate 9 by fastening bolts 10; the bearing seat 2 is fixedly connected to the base plate 11 by fastening bolts 10; the laser tracker 12 and the target ball 14 are measuring devices, and the target ball seat 15 is a device for fixing the target ball.

[0055] Step 2: The laser tracker 12 measures two parts of the transmission shaft 1. The first part is any AA section on the transmission shaft 1 between the bearing seat 2 and the load device 13, and the second part is any BB section on the coupling 3 connected to the end of the transmission shaft 1. The AA and BB sections are divided into 16 equal parts and marked with serial numbers, and the two target ball seats 15 are respectively bonded and fixed at the same serial number positions of the two sections.

[0056] Step 3: The laser tracker 12 measures two parts of the motor shaft 4. The first part is any CC section on the coupling 3 connected to the end of the motor shaft 4, and the second part is any DD section on the motor shaft 4 protruding from the tail of the motor 5. The CC and DD measurement sections are divided into 16 equal parts and marked with serial numbers, and the two target ball seats 15 are respectively bonded and fixed at the same serial number positions of the two sections.

[0057] Step 4: The target ball 14 is magnetically adsorbed onto the four target ball seats 15 in turn, and the transmission shaft 1 and the motor shaft 4 are slowly rotated for dynamic measurement. When rotating to each equally divided serial point, the laser tracker 12 collects the current position data of the target ball 14.

[0058] Step 5: Based on the collected AA and BB axis section data, the swing R of the axis of the transmission shaft 1 in the XOY horizontal plane and the swing R in the XOZ vertical plane are obtained. 1 ; According to the collected CC and DD axis section data, the swing N of the axis of the motor shaft 4 in the XOY horizontal plane and the swing N in the XOZ vertical plane are obtained. 1; Based on the collected shaft section data at both ends of the BB and CC couplings, the XOY horizontal plane concentricity difference P and XOZ vertical plane concentricity difference P at both ends of the coupling are obtained. 1 .

[0059] Step 6: Based on the obtained swing R of the XOY horizontal plane of the transmission shaft 1, the adjustment amount M and M of the swing N of the XOY horizontal plane of the motor shaft 4 are obtained by calculation. 1 , so that the adjusted swing is consistent with R, and the concentricity difference P of the XOY horizontal plane at both ends of the coupling is minimized.

[0060] Step 7: Obtain the XOZ vertical plane swing R of the transmission shaft 1 1 As a reference, the swing N of the vertical plane of the motor shaft 4XOZ is calculated. 1 Adjustment amount O and O 1 To meet the adjusted swing and R 1 The XOZ vertical plane concentricity difference P at both ends of the coupling is consistent. 1 Reach the minimum.

[0061] Step 8: According to the calculated adjustment amount M and M of the motor shaft 4 on the XOY horizontal plane 1 , and the adjustment amount O and O of the motor shaft 4 vertically facing XOZ 1 , adjust the corresponding part of the motor shaft 4 according to the calculated adjustment amount.

[0062] In this embodiment, by taking a horizontal unit as an example, the operation method of using a laser tracker to measure the shaft system swing is specifically described, and the operation steps of combining the measurement process method with the specific unit shaft system structure are established.

[0063] Specific implementation method 2: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment further limits step one described in specific embodiment one. In this embodiment, the coupling 3 in step one is applicable to a rigid coupling and a flexible coupling.

[0064] In this embodiment, the method of measuring the runout of shaft systems connected by different types of couplings is described, and the method of using a laser tracker to measure the runout is also applicable. This method is applicable to the working conditions of shaft systems connected by various types of couplings.

[0065] Specific implementation method three: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment further limits step one described in specific embodiment one. In this embodiment, the shaft system working conditions of the transmission shaft 1 and the motor shaft 4 in step one are applicable to horizontal state, vertical state and inclined state.

[0066] In this embodiment, the method of measuring the runout using a laser tracker is described for different types of shaft system working conditions. This method is applicable to the working conditions of various types of unit shaft systems.

[0067] Specific implementation method four: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is a shaft system consisting of the transmission shaft 1 and the motor shaft 4 in step one described in the specific embodiment one. The shaft system is applicable to a shaft system consisting of two shaft sections and a shaft system consisting of multiple shaft sections.

[0068] In this embodiment, the method of measuring the runout of an axis system composed of multiple shaft sections is described, and the method of using a laser tracker to measure the runout is also applicable.

[0069] Specific implementation method five: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is to measure the AA, BB, CC, and DD sections of the transmission shaft 1 and the motor shaft 4 in step 2 and step 3 described in specific embodiment 1. The number of sections is required to ensure that each section of the shaft system composed of multiple sections has at least two measuring sections.

[0070] In this embodiment, the runout detection of an axis system composed of segmented axes is described, the minimum number of measurement sections of each segmented axis is two, and the quantitative relationship between each segmented axis and the measurement sections in the axis system is established.

[0071] Specific implementation method six: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is to measure the AA, BB, CC, and DD sections of the transmission shaft 1 and the motor shaft 4 in step two and step three described in specific embodiment one, and each section is divided into 16 equal parts. The number of equal parts of the section is suitable for 4 equal parts, 8 equal parts, 16 equal parts and multiple equal parts.

[0072] In this embodiment, the number of points for dividing the measuring cross section of each shaft section of the shaft system is described as applicable to 4 equal divisions or multiple equal divisions.

[0073] Specific implementation method seven: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is for the target ball 14 position data collected by the laser tracker 12 in step 4 described in the specific embodiment 1, and it is required to ensure that the number of data collected at the four measurement sections AA, BB, CC, and DD 16 equally divided positions is not less than 8, that is, the number of data collected at each section is not less than half of the section equal fraction.

[0074] In this embodiment, it is described that when the shaft system is finding the runout, the number of data collected at each measurement section is not less than half of the number of points at which the section is divided equally.

[0075] Specific implementation method eight: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is to dynamically measure the slowly rotating transmission shaft 1 and the motor shaft 4 in step four described in the specific embodiment one. When the shaft system does not have the conditions for rotation, the 16 equally divided positions of the four cross sections AA, BB, CC, and DD are measured under the static state of the main shaft, that is, the 16 equally divided positions of each cross section are measured in turn by reversing the target ball 14, and the number of data collected at each cross section is not less than half of the number of cross section equal parts.

[0076] In this embodiment, when the shaft system is described to find the runout, the runout can be dynamically measured by slowly rotating the shaft system. When the shaft system does not have the conditions for dynamic measurement, the runout can be measured in a static state of the shaft system.

[0077] Specific implementation method nine: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is to calculate the adjustment amount M and M of the swing N of the XOY horizontal plane of the motor shaft 4 obtained in step 6 of the specific embodiment 1. 1 , motor axis 4XOY horizontal adjustment amount M and M 1 The calculation steps are as follows:

[0078] The swing R of the XOY horizontal plane of the transmission shaft 1 measured by the laser tracker is used as a reference, combined with the swing N of the XOY horizontal plane of the motor shaft 4, the distance L from the motor shaft end to the front foot of the motor base, and the distance L to the rear foot of the motor base. 1 And the XOY horizontal plane concentricity difference P at both ends of the coupling 3 is calculated, and the judgment formula is as follows:

[0079] M=(RN)xL-P

[0080] M 1 =(RN)xL 1 -P

[0081] Where:

[0082] M: Calculate the adjustment amount of the top screw 7 on the front foot of the motor base at the XOY level;

[0083] M 1 : Calculate the adjustment amount of the top screw 7 on the rear foot of the motor base on the XOY horizontal plane;

[0084] R: The swing of transmission shaft 1 in the XOY horizontal plane is measured by the laser tracker;

[0085] N: The swing of the motor shaft 4 in the XOY horizontal plane is measured by the laser tracker;

[0086] L: The distance from the middle end face of the coupling to the front foot of the motor base;

[0087] L 1 : The distance from the middle end face of the coupling to the rear foot of the motor base;

[0088] P: The concentricity difference between the two ends of the coupling measured by the laser tracker on the XOY horizontal plane;

[0089] In this embodiment, it is described that when finding the swing of the axis system, the swing value of the transmission shaft XOY horizontal plane measured by the laser tracker is used as a reference, combined with the swing value of the motor shaft XOY horizontal plane measured by the laser tracker, to obtain the mathematical calculation relationship of the swing adjustment amount of the motor shaft relative to the transmission shaft in the XOY horizontal plane, and establish a universal calculation relationship for the relative swing adjustment amount of the two shaft sections.

[0090] Specific implementation method ten: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is to calculate the swing N of the XOZ vertical plane of the motor shaft 4 in step 7 of the specific embodiment 1. 1 Adjustment amount O and O 1 , the swing N of the XOZ vertical plane of the motor shaft 4 1 Adjustment amount O and O 1 The calculation steps are as follows:

[0091] The XOZ vertical plane runout R of the transmission shaft 1 measured by the laser tracker 1 As a reference, the swing N of the XOZ vertical plane of the motor shaft 4 is 1 , the distance L from the motor shaft end to the front foot of the motor base and the distance L from the motor shaft end to the rear foot of the motor base 1 And the XOZ vertical plane concentricity difference P at both ends of coupling 3 1 Calculate and determine the formula as follows:

[0092] O=(R 1 -N 1 )xL-P 1

[0093] O 1 =(R 1 -N 1 )xL 1 -P 1

[0094] Where:

[0095] O: The calculated adjustment amount of the top screw 8 of the front foot support of the motor base when XOZ is vertically facing it;

[0096] O 1 : Calculate the adjustment amount of the top screw 8 of the rear foot support when XOZ is facing vertically toward the motor base;

[0097] R 1 : The laser tracker measures the swing of the transmission shaft 1 on the XOZ vertical plane;

[0098] N 1 : The laser tracker measures the swing of the motor shaft 4 in the XOZ vertical plane;

[0099] L: The distance from the middle end face of the coupling to the front foot of the motor base;

[0100] L 1 : The distance from the middle end face of the coupling to the rear foot of the motor base;

[0101] P 1 : The laser tracker measures the concentricity difference between the two ends of the coupling on the XOZ vertical plane;

[0102] In this embodiment, it is described that when finding the swing of the axis system, the swing value of the vertical plane XOZ of the transmission shaft measured by the laser tracker is used as a reference, combined with the swing value of the vertical plane XOZ of the motor shaft measured by the laser tracker, the mathematical calculation relationship of the swing adjustment amount of the motor shaft relative to the transmission shaft in the vertical plane XOZ is obtained, and the general calculation relationship of the relative swing adjustment amount of the two shaft sections is established.

[0103] Specific implementation method eleven: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is the adjustment amount M of the front foot of the motor base and the adjustment amount M of the rear foot of the motor base calculated in step 6 of the specific embodiment 1. 1 , and complete the adjustment by adjusting the top screw 7.

[0104] This implementation describes a specific method for adjusting the swing when the shaft system is finding the swing, based on the calculated swing adjustment value of the motor shaft relative to the transmission shaft in the XOY horizontal plane, taking a horizontal unit structure as an example.

[0105] Specific implementation method 12: Figure 1 , Figure 2 , Figure 3 As shown, this embodiment is to adjust the adjustment amount O of the front foot support top of the motor base and the adjustment amount O of the rear foot support top of the motor base vertically facing XOZ calculated in step seven of the specific embodiment one. 1 , the adjustment is completed by adjusting the top screw 8.

[0106] This implementation describes the specific adjustment method for finding the swing of the shaft system based on the calculated swing adjustment value of the motor shaft relative to the transmission shaft in the XOZ vertical plane, taking the horizontal unit structure as an example.

[0107] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit the same. Although the present invention has been described in detail with reference to the aforementioned embodiments, it should be clear to those skilled in the art that the technical solutions described in the aforementioned embodiments may be modified, or some or all of the technical features therein may be replaced by equivalents. However, these modifications or replacements do not deviate the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A laser tracker method for measuring the swing of a coupling, the characteristics of which include Follow these steps: Step 1: one end of the transmission shaft (1) is connected to the load device (13), the middle section of the transmission shaft is supported by the bearing seat (2), and the other end of the transmission shaft (1) is connected to the motor shaft (4) through a coupling (3); the base of the motor (5) has two-way adjustment screws (6) in the X direction, two-way adjustment screws (7) in the Y direction, and a support screw (8) in the Z direction; the motor (5) is fixedly connected to the base plate (9) by fastening bolts (10); the bearing seat (2) is fixedly connected to the base plate (11) by fastening bolts (10); the laser tracker (12) and the target ball (14) are measuring devices, and the target ball seat (15) is a device for fixing the target ball; Step 2: The laser tracker (12) measures two locations of the transmission shaft (1), the first being any AA section on the transmission shaft (1) between the bearing seat (2) and the load device (13), and the second being any BB section on the coupling (3) connected to the end of the transmission shaft (1). The AA and BB sections are divided into 16 equal parts and marked with serial numbers, and two target ball seats (15) are respectively bonded and fixed at the same serial number positions of the two sections; Step 3: The laser tracker (12) measures two locations of the motor shaft (4), the first location being any CC section on the coupling (3) connected to the end of the motor shaft (4), and the second location being any DD section on the motor shaft (4) protruding from the tail of the motor (5). The CC and DD measurement sections are divided into 16 equal parts and marked with serial numbers, and two target ball seats (15) are respectively bonded and fixed at the same serial number positions of the two sections; Step 4: The target ball (14) is magnetically adsorbed onto four target ball seats (15) in sequence, and the transmission shaft (1) and the motor shaft (4) are slowly rotated for dynamic measurement. When the target ball (14) is rotated to each equally divided serial number point, the laser tracker (12) collects the current position data of the target ball (14); Step 5: Based on the collected AA and BB shaft section data, the swing R of the axis of the transmission shaft (1) in the XOY horizontal plane and the swing R1 of the XOZ vertical plane are obtained; based on the collected CC and DD shaft section data, the swing N of the axis of the motor shaft (4) in the XOY horizontal plane and the swing N1 of the XOZ vertical plane are obtained; based on the collected BB and CC shaft section data at both ends of the coupling, the XOY horizontal plane concentricity difference P and the XOZ vertical plane concentricity difference P1 at both ends of the coupling are obtained; Step 6: Taking the obtained swing R of the XOY horizontal plane of the transmission shaft (1) as a reference, the adjustment amounts M and M1 of the swing N of the XOY horizontal plane of the motor shaft (4) are obtained by calculation, so that the adjusted swing is consistent with R, and the concentricity difference P of the XOY horizontal planes at both ends of the coupling is minimized; Step 7: Taking the obtained XOZ vertical plane swing R1 of the transmission shaft (1) as a reference, the adjustment amounts O and O1 of the XOZ vertical plane swing N1 of the motor shaft (4) are obtained by calculation, so that the adjusted swing is consistent with R1, and the concentric difference P1 of the XOZ vertical planes at both ends of the coupling is minimized; Step 8: Based on the calculated adjustment amounts M and M1 of the motor shaft (4) on the XOY horizontal surface, and the adjustment amounts O and O1 of the motor shaft (4) on the XOZ vertical surface, the corresponding parts of the motor shaft (4) are adjusted according to the calculated adjustment amounts.

2. The method for measuring the coupling runout by a laser tracker according to claim 1, characterized in that: The coupling (3) in step 1 is applicable to a rigid coupling and a flexible coupling.

3. The method for measuring the coupling runout by using a laser tracker according to claim 1, characterized in that: The shaft system operating conditions of the transmission shaft (1) and the motor shaft (4) in step 1 are applicable to a horizontal state, a vertical state, and an inclined state.

4. The method for measuring the runout of a coupling by using a laser tracker according to claim 1, wherein: The shaft system composed of the transmission shaft (1) and the motor shaft (4) in step 1 is applicable to a shaft system composed of two shaft sections and a shaft system composed of multiple shaft sections.

5. The method for measuring the coupling runout by using a laser tracker according to claim 1, characterized in that: The AA, BB, CC, and DD measurement sections of the transmission shaft (1) and the motor shaft (4) in step 2 and step 3 are required to have a number of sections to ensure that each section of the shaft system consisting of multiple sections of shafts has at least two measurement sections.

6. The method for measuring the runout of a coupling by using a laser tracker according to claim 1, characterized in that: The AA, BB, CC, and DD measurement sections of the transmission shaft (1) and the motor shaft (4) in step 2 and step 3 are each divided into 16 equal parts, and the number of equal parts of the section is suitable for 4 equal parts, 8 equal parts, and 16 equal parts.

7. The method for measuring the runout of a coupling by using a laser tracker according to claim 1, characterized in that: The target ball (14) position data collected by the laser tracker (12) in step 4 is required to ensure that the number of data collected at the four measurement sections AA, BB, CC, DD, which are divided into 16 equal parts, is not less than 8, that is, the number of data collected at each section is not less than half of the cross-section equal parts.

8. The method for measuring the coupling runout by using a laser tracker according to claim 1, characterized in that: In the step 4, the transmission shaft (1) and the motor shaft (4) are slowly rotated for dynamic measurement. When the shaft system does not have the conditions for rotation, the 16-equal-division positions of the four cross sections AA, BB, CC, and DD are measured with the main shaft static, that is, the 16-equal-division positions of each cross section are measured in turn by reversing the target ball (14), and the number of data collected at each cross section is not less than half of the cross section equal-division number.

9. The method for measuring the coupling runout by using a laser tracker according to claim 1, characterized in that: In step 6, the adjustment amounts M and M1 of the swing N of the XOY horizontal plane of the motor shaft (4) are calculated. The steps for calculating the adjustment amounts M and M1 of the XOY horizontal plane of the motor shaft (4) are as follows: The swing R of the XOY horizontal plane of the transmission shaft (1) measured by the laser tracker is used as a reference, and the swing N of the XOY horizontal plane of the motor shaft (4), the distance L from the motor shaft end to the front foot of the motor base and the distance L1 to the rear foot of the motor base, and the concentric difference P of the XOY horizontal plane at both ends of the coupling (3) are calculated. The determination formula is as follows: M=(RN)xL-P M1=(RN)xL1-P Where: M: The calculated adjustment amount of the top screw (7) for adjusting the front foot of the motor base on the XOY horizontal plane; M1: Calculate the adjustment amount of the top screw (7) at the rear foot of the motor base on the XOY horizontal plane; R: The swing of the transmission shaft (1) in the XOY horizontal plane measured by the laser tracker; N: the swing of the motor shaft (4) in the XOY horizontal plane measured by the laser tracker; L: The distance from the middle end face of the coupling to the front foot of the motor base; L1: The distance from the middle end face of the coupling to the rear foot of the motor base; P: The laser tracker measures the concentricity difference between the two ends of the coupling in the XOY horizontal plane.

10. The laser tracker method for measuring the runout of a coupling according to claim 1, characterized in that: In step 7, the adjustment amounts O and O1 of the swing N1 of the XOZ vertical plane of the motor shaft (4) are calculated. The steps for calculating the adjustment amounts O and O1 of the swing N1 of the XOZ vertical plane of the motor shaft (4) are as follows: The XOZ vertical plane swing R1 of the transmission shaft (1) measured by the laser tracker is used as a reference, and the XOZ vertical plane swing N1 of the motor shaft (4), the distance L from the motor shaft end to the front foot of the motor base and the distance L1 to the rear foot of the motor base, and the XOZ vertical plane concentricity difference P1 at both ends of the coupling (3) are calculated. The determination formula is as follows: O=(R1-N1)xL-P1 O1=(R1-N1)xL1-P1 Where: O: Calculated adjustment amount for the top screw (8) of the front foot support of the motor base in the vertical direction of XOZ; O1: Calculated adjustment amount of the top screw (8) of the rear foot support of the motor base when XOZ is vertically facing the motor base; R1: The swing of the transmission shaft (1) in the XOZ vertical plane is measured by the laser tracker; N1: The swing of the motor shaft (4) in the XOZ vertical plane is measured by the laser tracker; L: The distance from the middle end face of the coupling to the front foot of the motor base; L1: The distance from the middle end face of the coupling to the rear foot of the motor base; P1: The laser tracker measures the concentricity difference between the two ends of the coupling in the XOZ vertical plane.

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