Self-aligning roller bearing inner ring raceway position detection method based on coordinate measuring machine

Abstract

The invention provides a self-aligning roller bearing inner ring raceway position detection method based on a coordinate measuring machine, and the method comprises the steps: firstly building a rectangular coordinate system on a to-be-detected self-aligning roller bearing inner ring, and then setting a horizontal reference surface on one end surface of the inner ring; when a coordinate measuring machine is used for establishing a rectangular coordinate system on the self-aligning roller bearing, one end face of an inner ring of the self-aligning roller bearing is used as a datum plane, point positions on the inner ring are subjected to coordinate processing, a plurality of inner ring raceway circles are fitted according to point position coordinates of the inner ring of the self-aligning roller bearing, and then a circle center plane is fitted according to circle center coordinates of the plurality of inner ring raceway circles; and judging whether the position of the inner ring raceway of the to-be-detected self-aligning roller bearing is qualified or not by directly comparing the distance between the coordinate of the center of the inner ring raceway circle in the axis direction of the self-aligning roller bearing and the horizontal reference surface and the distance between the circle center plane and the horizontal reference surface. The scheme that in the prior art, at least one standard self-aligning roller bearing must be used as a reference for detection is avoided, and the detection efficiency is improved.

Description

Technical Field

[0001] The invention relates to a method for measuring a profile or a curvature, and in particular to a method for detecting the position of an inner ring raceway of a spherical roller bearing based on a coordinate measuring machine. Background Art

[0002] The spherical roller bearing has double-row rollers, and the inner ring has two raceways that are inclined at an angle relative to the bearing axis. It has self-aligning properties and is not easily affected by the error in the installation angle between the shaft and the bearing housing. It can withstand a certain bidirectional axial load while bearing a large radial load. The position of the inner ring raceway is an important factor in determining the structural performance of the spherical roller bearing. If the position deviation of the inner ring raceway exceeds the tolerance range, the contact area between the bearing roller and the inner ring raceway will be skewed, resulting in premature fatigue failure of the bearing. Therefore, how to detect the position of the inner ring raceway of the spherical roller bearing with high precision is a key issue for technical personnel in this field.

[0003] The Chinese utility model patent with announcement number CN87201349U discloses a bearing inner ring raceway position and radius measuring instrument, including a rotatable measuring rod and a measuring instrument connected to the measuring rod. A standard spherical roller bearing inner ring is placed on the measuring instrument and the measuring rod contact is fitted with its inner ring raceway. At this time, the measuring instrument is zeroed, and the standard spherical roller bearing inner ring is replaced with the spherical roller bearing inner ring to be measured. By reading the amplitude of the jump of the number indicated by the measuring instrument and comparing the parameter difference between the bearing to be measured and the standard bearing, it is judged whether its dimensional accuracy is qualified.

[0004] The problem with this solution is that in many cases in actual production measurement, it is necessary to directly measure the size of the spherical roller bearing to be measured, while the prior art requires at least one standard spherical roller bearing to measure only the geometric parameters of the inner ring raceway of the spherical roller bearing of the same model, and the above-mentioned measuring instrument has a complicated operation process and low detection efficiency. Once an operating error occurs during the operation process, the measurement data will be inaccurate and re-measurement is required, which is very inconvenient. Summary of the invention

[0005] The purpose of the present invention is to provide a method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine, so as to solve the problem of slow speed and low efficiency in detecting the geometric parameters of the inner ring raceway of a spherical roller bearing in the prior art.

[0006] To achieve the above object, the present invention provides a method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine, comprising the following steps: S1: Fix the inner ring of the spherical roller bearing, take its end face as the XOY plane and the axis as the Z axis, establish a rectangular coordinate system, select any straight line passing through the Z axis on the XOY plane and identify it as the Y axis, and determine the X axis with the Y axis; S2: Based on the established rectangular coordinate system, multiple points are selected on an end face of the inner ring of the spherical roller bearing as horizontal reference plane measuring points, and the horizontal reference plane is fitted according to the horizontal reference plane measuring points; S3: Select multiple measuring surfaces arranged circumferentially around the Z axis, select multiple points on the intersection line of the inner ring raceway of the spherical roller bearing and each measuring surface as the inner ring raceway circle fitting measuring points, and obtain the coordinates of each inner ring raceway circle fitting measuring point according to the rectangular coordinate system; S4: fitting the inner ring raceway circles on each measuring surface according to the coordinates of the inner ring raceway circle fitting measuring points on each measuring surface, and determining the center coordinates of each inner ring raceway circle according to a rectangular coordinate system; S5: fitting a center plane according to the measured center coordinates of multiple inner ring raceway circles; S6: Obtain the height difference between the coordinates of the center of each inner ring raceway circle in the Z-axis direction and the horizontal reference plane, and at the same time obtain the height difference between the center plane and the horizontal reference plane. If the above two height differences are both within the allowable tolerance range, the position of the inner ring raceway of the spherical roller bearing to be tested meets the requirements. If one of the height difference data exceeds the allowable tolerance range, the position of the inner ring raceway of the spherical roller bearing to be tested does not meet the requirements.

[0007] Furthermore, in S1, a coordinate measuring machine is used to preliminarily determine a rectangular coordinate system through a surface-circle-point method, and the upper end surface of the spherical roller bearing is selected as the XOY plane of the rectangular coordinate system.

[0008] Furthermore, a coordinate measuring machine is used to manually roughly construct a rectangular coordinate system, and then based on the roughly constructed rectangular coordinate system, the automatic program function of the coordinate measuring machine is used to finely construct the rectangular coordinate system to improve the detection accuracy.

[0009] Furthermore, in S2, the inner ring of the spherical roller bearing is placed horizontally, and a plurality of points are selected on its upper end surface as horizontal reference plane measuring points, and a horizontal reference plane is fitted according to the horizontal reference plane measuring points.

[0010] Furthermore, the multiple measurement surfaces selected in S3 and arranged circumferentially around the Z axis are all radiating surfaces starting from the Z axis.

[0011] Further, the multiple measurement surfaces selected by S3 are evenly arranged around the Z axis at a certain angle.

[0012] Furthermore, four measuring planes are selected and arranged along the positive and negative directions of the X-axis and the positive and negative directions of the Y-axis respectively.

[0013] Furthermore, in S3, a coordinate measuring machine is used to uniformly select 16 inner ring raceway circle fitting measuring points along the intersection line of the inner ring raceway of the spherical roller bearing on the measuring surface.

[0014] Furthermore, in S2, a coordinate measuring machine is used to evenly select 16 points around the axis on an end face of an inner ring of the spherical roller bearing as horizontal reference plane measuring points, and a horizontal reference plane is fitted based on the 16 horizontal reference plane measuring points.

[0015] Furthermore, the coordinate measuring machine in S3 uses a horizontally arranged contact head, and the inner ring raceway circle fitting measuring points are selected by rotating the contact head orientation around the Z axis.

[0016] Beneficial effects: The present invention provides a pioneering method for detecting the raceway position of the inner ring of a spherical roller bearing based on a coordinate measuring machine. The coordinate measuring machine is used to measure the raceway position of the inner ring of the spherical roller bearing. A rectangular coordinate system is first established on the inner ring of the spherical roller bearing, and then a horizontal reference plane is set on an end face of the spherical roller bearing to be measured. When the rectangular coordinate system is established on the spherical roller bearing using the coordinate measuring machine, an end face of the inner ring of the spherical roller bearing is set as a plane of the coordinate system, and the axis of the inner ring of the spherical roller bearing is selected as the coordinate axis perpendicular to the above plane in the rectangular coordinate system. The size of the inner ring of the spherical roller bearing is set as the coordinate axis of the inner ring of the spherical roller bearing. Parameter coordinate conversion, multiple inner ring raceway circles are fitted according to the point coordinates on the inner ring raceway of the spherical roller bearing, and then a center plane is fitted according to the center coordinates of multiple inner ring raceway circles; then an end face of the inner ring of the spherical roller bearing is selected, multiple points are selected on the end face, and a horizontal reference plane is fitted according to the point coordinates, and the horizontal reference plane is used as the reference for comparing the center distance, and the distance between the coordinates of the center of the inner ring raceway circle in the axial direction of the spherical roller bearing and the horizontal reference plane and the distance between the center plane and the horizontal reference plane are compared to determine whether the raceway position of the inner ring of the spherical roller bearing to be tested is qualified. The geometric parameters of the inner ring raceway position of the spherical roller bearing are detected using a coordinate measuring machine, and the geometric data of the spherical roller bearing to be tested is coordinate converted. Only the measurement points of the raceway can be measured to quickly check whether the inner ring of the spherical roller bearing to be tested is qualified, which avoids the scheme in the prior art that at least one standard spherical roller bearing must be used as a reference for detection, and improves the detection efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The present invention is a detection flow chart of a method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine; Figure 2 It is a schematic diagram of the cross section of the selected points on the inner ring of the spherical roller bearing when roughly constructing the rectangular coordinate system; Figure 3 It is a top view of the selected points on the inner ring of the spherical roller bearing when roughly constructing the rectangular coordinate system; Figure 4 It is a top view of the selected points on the inner ring of the spherical roller bearing when the rectangular coordinate system is precisely constructed; Figure 5 It is a top view of the points selected when establishing a horizontal reference plane on the inner ring of a spherical roller bearing; Figure 6 It is a schematic cross-sectional view of the points selected when establishing a horizontal reference surface on the inner ring of a spherical roller bearing; Figure 7 It is a cross-sectional diagram of the points selected when fitting the inner ring raceway circle; Figure 8 Schematic diagram of the inner ring raceway circle.

[0018] In the figure: 1. Inner ring of spherical roller bearing; 2. Roughly selected reference surface measuring point; 3. Roughly selected circumferential surface measuring point; 4. Inner ring end face point; 5. Selected reference surface measuring point; 6. Selected circumferential surface measuring point; 7. Horizontal reference surface measuring point; 8. Inner ring raceway circle fitting measuring point; 9. Inner ring raceway circle; 10. Inner ring raceway circle center. DETAILED DESCRIPTION

[0019] The features and performance of the present invention are further described in detail below in conjunction with the embodiments.

[0020] The principle and concept of the present invention are to first use a coordinate measuring machine to establish a rectangular coordinate system on the inner ring of the spherical roller bearing to be measured, and then set a horizontal reference plane on one end face of the spherical roller bearing to be measured; when establishing the coordinate system, the axis of the inner ring of the spherical roller bearing is used as the Z axis of the rectangular coordinate system, and the end face where the horizontal reference plane is located is used as the XOY plane. The measuring needle set in the horizontal direction of the coordinate measuring machine evenly selects multiple points from top to bottom along the raceway intersection line, and fits the inner ring raceway circle according to the point coordinates; the measuring needle is rotated in the direction to obtain multiple sets of coordinate parameters of the inner ring raceway circles. , fit the center plane according to the center coordinates of the inner ring raceway circle; record the distance differences between the positions of the centers of multiple groups of inner ring raceway circles in the Z-axis direction and the horizontal reference plane, as well as the distance differences between the center plane and the horizontal reference plane, and compare the above distance differences with the standard allowable tolerances of the inner ring raceway positions of the same type of spherical roller bearings. If the above two distance differences are both within the allowable tolerance range, the raceway position of the inner ring of the spherical roller bearing to be tested is determined to be qualified. Conversely, if one of the data is no longer within the tolerance range, the raceway position of the inner ring of the spherical roller bearing to be tested is determined to be unqualified.

[0021] Based on the above principles and concepts, the present invention provides an embodiment of a method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine, comprising the following steps: S1: Fix the inner ring 1 of the spherical roller bearing, take one end face of the inner ring 1 of the spherical roller bearing as the XOY plane, and take the axis of the spherical roller bearing 1 as the Z axis to establish a rectangular coordinate system. Select any point on the XOY plane, draw a straight line perpendicular to the Z axis through the point, and identify the axis of the straight line as the Y axis, and the direction of the foot of the perpendicular toward the point is the positive direction of the Y axis.

[0022] Select an end face of the spherical roller bearing 1 as the XOY plane, use the coordinate measuring machine, and establish a rectangular coordinate system through the surface-circle-point method. First, the rectangular coordinate system needs to be roughly established. Manually operate the vertical probe of the coordinate measuring machine to evenly select 3 rough-selected reference surface measuring points 2 on the selected end face, and use the end face element program of the coordinate measuring machine to output the rough-selected XOY plane according to the rough-selected reference surface measuring point 2; manually operate the horizontal contact of the coordinate measuring machine to select 3 rough-selected circumferential surface measuring points 3 on the same section of the inner ring circumference of the inner ring of the spherical roller bearing 1, and use the diameter circle program of the coordinate measuring machine to output the rough-selected XOY plane according to the 3 rough-selected circumferential surface measuring points 3. A straight line perpendicular to the XOY plane is drawn through the center of the rough selected circular ring. The straight line is considered to be the axis of the inner ring 1 of the spherical roller bearing and is used as the Z axis of the rectangular coordinate system. Then, an inner ring end face point 4 is selected on the rough selected XOY plane, and a straight line perpendicular to the Z axis is drawn through the inner ring end face point 4. The direction of the perpendicular foot to the inner ring end face point 4 is the positive direction of the Y axis. A straight line perpendicular to the Y axis and extending to both sides of the Y axis is drawn and is defined as the X axis. In another embodiment, 4 rough selected circumferential surface measuring points 3 and 4 rough selected reference surface measuring points 2 can also be selected. The number of measuring points is greater than 3 and the number does not need to be too large. Selecting different numbers of measuring points falls within the protection scope of the present invention.

[0023] When the rectangular coordinate system is precisely constructed, the rough-constructed rectangular coordinate system is used as a basis, and the automatic mode of the coordinate measuring machine is selected to establish the precisely constructed rectangular coordinate system. Eight selected reference surface measuring points 5 are evenly selected around the Z-axis on the upper end surface to generate a plane, and then eight selected circumferential surface measuring points 6 are selected at the same height of the inner ring circumference of the inner ring 1 of the spherical roller bearing to generate a circle. Then, any point in the positive direction of the Y-axis determined in the roughly-constructed rectangular coordinate system is selected as a reference, and the precisely-constructed rectangular coordinate system is automatically established according to the surface-circle-point method. In another embodiment, more selected reference surface measuring points 5 and more selected circumferential surface measuring points 6 can also be selected to achieve the establishment of a rectangular coordinate system with higher precision. The selection of different numbers of measuring points falls within the protection scope of the present invention.

[0024] exist Figure 1-4 In the provided embodiment, the spherical roller bearing inner ring 1 is placed horizontally on the detection platform, and an XOY plane for establishing a coordinate system is set on the upper end surface of the spherical roller bearing inner ring 1. In another embodiment, the spherical roller bearing inner ring to be tested can also be placed vertically and fixed, with its axis set in the horizontal direction, with the end surface of one side of the spherical roller bearing inner ring to be tested as the XOY plane, and the axis as the Z axis to establish a rectangular coordinate system and detect it.

[0025] The coordinate measuring machine and coordinate measuring program used in the above embodiments are both prior art. The coordinate measuring machine of the present invention can use the three-coordinate measuring instrument and measurement program PCDMIS used in a method for measuring the diameter and angle of a tapered inner ring raceway provided in the Chinese invention patent with publication number CN117091552A.

[0026] S2: Based on the established rectangular coordinate system, multiple points are selected on an end face of the inner ring 1 of the spherical roller bearing as horizontal reference plane measuring points 7, and a horizontal reference plane is fitted according to the horizontal reference plane measuring points 7.

[0027] like Figure 5-6 In the provided embodiment, 16 horizontal reference plane measuring points 7 are uniformly selected circumferentially on the upper end face of the inner ring 1 of the horizontally placed spherical roller bearing using a coordinate measuring machine, and then the horizontal reference plane is fitted out using the fitting program of the coordinate measuring machine according to the coordinates of the horizontal reference plane measuring points 7. At this time, the coordinate of the horizontal reference plane in the Z-axis direction may be 0 or may not be 0; in another embodiment, a horizontal reference plane may also be set on the lower end face of the inner ring 1 of the spherical roller bearing, and a coordinate measuring machine is used to detect the geometric parameters of the raceway close to the lower end face and compare them with the Z-axis coordinates of the horizontal reference plane set on the lower end face to determine whether the position of the raceway to be measured is qualified.

[0028] S3: Select multiple measuring surfaces arranged circumferentially around the Z axis, select multiple points along the intersection line of the inner ring 1 raceway of the spherical roller bearing and each measuring surface as the inner ring raceway circle fitting measuring points 8, and obtain the coordinates of each inner ring raceway circle fitting measuring point 8 according to the rectangular coordinate system.

[0029] like Figure 7 In the embodiment provided, in this step, 4 radial surfaces starting from the Z axis are selected as measuring surfaces, which are evenly arranged at intervals of 90° around the Z axis, and the directions of the 4 measuring surfaces are respectively toward the positive and negative directions of the X axis and the positive and negative directions of the Y axis. In another embodiment, more groups of radial surfaces evenly arranged around the Z axis can also be selected, such as selecting a total of 8 evenly arranged measuring surfaces around the Z axis at intervals of 45°, so as to obtain more accurate parameters of the inner ring raceway circle 9.

[0030] The coordinate measuring machine used in the present invention includes a horizontally oriented probe, and the coordinate data of multiple inner ring raceway circle fitting measuring points 8 on the intersection line of four measuring surfaces and the raceway are read by rotating the orientation angle of the probe around the Z axis. In another embodiment, a coordinate measuring machine with an annular probe frame can also be used. The annular probe frame is provided with multiple probes facing the center of the annular probe frame. The inner ring 1 of the spherical roller bearing is horizontally fixed in the probe frame, and the probe is contacted with the raceway. It only needs to select probes in different directions and move them along the intersection line to obtain the coordinate data of multiple inner ring raceway circle fitting measuring points 8 on the raceway intersection line at the selected probe.

[0031] S4: fitting the inner ring raceway circle 9 on each measuring surface according to the coordinates of the inner ring raceway circle fitting measuring points 8 on each measuring surface, and determining the coordinates of the center 10 of each inner ring raceway circle according to a rectangular coordinate system.

[0032] like Figure 8 The provided embodiment uses the automatic circle programming function in the coordinate measurement program to output the inner ring raceway circle 9 according to the 16 inner ring raceway circle fitting measuring points 8 on each measuring surface.

[0033] S5: Fitting a center plane according to the coordinates of the centers 10 of the multiple inner ring raceway circles measured in S4.

[0034] Use the plane construction function in the coordinate measurement program to construct the center plane according to the coordinates of the center points 10 of the four inner ring raceway circles.

[0035] S6: record the height difference between the coordinates of the center points 10 of the four inner ring raceway circles in the Z-axis direction and the horizontal reference plane, recorded as t1, t2, t3, t4, and record the height difference between the center plane and the horizontal reference plane, recorded as t. If the above height differences are all within the allowable tolerance range of the inner ring raceway position of the same type of spherical roller bearing, the inner ring raceway position of the spherical roller bearing to be tested is determined to be qualified. If one of the above five data exceeds the allowable tolerance range, the inner ring raceway position of the spherical roller bearing to be tested is determined to be unqualified.

[0036] The distance evaluation function of the coordinate measuring machine measurement software can automatically obtain the height difference between the center 10 of the inner ring raceway circle and the originally set horizontal reference plane. Similarly, the height difference between the center plane and the horizontal reference plane can be obtained.

[0037] The present invention adopts a coordinate measuring machine to measure the inner ring of the spherical roller bearing. By establishing a rectangular coordinate system on the inner ring of the spherical roller bearing to be measured, the geometric parameters of the inner ring of the spherical roller bearing to be measured are coordinateized, so that the position coordinates of the center 10 of the inner ring raceway circle can be quickly obtained, and the distance with the set horizontal reference plane is compared and evaluated. The measuring method is reliable and effective. The detection method provided by the present invention has extremely high versatility, is suitable for rapid detection of the inner ring raceway of the spherical roller bearing during batch processing, improves the inspection efficiency, and effectively solves the problems of difficult position detection and low detection efficiency of the inner ring raceway of the existing spherical roller bearing.

[0038] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. The patent protection scope of the present invention shall be based on the claims. All equivalent structural changes made using the contents of the description and drawings of the present invention should also be included in the protection scope of the present invention.

Claims

1. A method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine, characterized in that: include: S1: Fix the inner ring of the spherical roller bearing, take its end face as the XOY plane and the axis as the Z axis, establish a rectangular coordinate system, select any straight line passing through the Z axis on the XOY plane and identify it as the Y axis, and determine the X axis with the Y axis; S2: Based on the established rectangular coordinate system, multiple points are selected on an end face of the inner ring of the spherical roller bearing as horizontal reference plane measuring points, and the horizontal reference plane is fitted according to the horizontal reference plane measuring points; S3: Select multiple measuring surfaces arranged circumferentially around the Z axis, select multiple points on the intersection line of the inner ring raceway of the spherical roller bearing and each measuring surface as the inner ring raceway circle fitting measuring points, and obtain the coordinates of each inner ring raceway circle fitting measuring point according to the rectangular coordinate system; S4: fitting the inner ring raceway circles on each measuring surface according to the coordinates of the inner ring raceway circle fitting measuring points on each measuring surface, and determining the center coordinates of each inner ring raceway circle according to a rectangular coordinate system; S5: fitting a center plane according to the measured center coordinates of multiple inner ring raceway circles; S6: Obtain the height difference between the coordinates of the center of each inner ring raceway circle in the Z-axis direction and the horizontal reference plane, and at the same time obtain the height difference between the center plane and the horizontal reference plane. If the above two height differences are both within the allowable tolerance range, the position of the inner ring raceway of the spherical roller bearing to be tested meets the requirements. If one of the height difference data exceeds the allowable tolerance range, the position of the inner ring raceway of the spherical roller bearing to be tested does not meet the requirements.

2. The method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine according to claim 1, characterized in that In S1, a coordinate measuring machine is used to preliminarily determine the rectangular coordinate system through the surface-circle-point method, and the upper end surface of the spherical roller bearing is selected as the XOY plane of the rectangular coordinate system.

3. The method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine according to claim 2, characterized in that: Use a coordinate measuring machine to manually roughly build a rectangular coordinate system, and then use the automatic program function of the coordinate measuring machine to finely build the rectangular coordinate system based on the roughly built rectangular coordinate system to improve the detection accuracy.

4. The method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine according to claim 1, characterized in that: In S2, the inner ring of the spherical roller bearing is placed horizontally, and multiple points are selected on its upper end surface as horizontal reference plane measuring points, and a horizontal reference plane is fitted according to the horizontal reference plane measuring points.

5. The method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine according to any one of claims 1 to 4, characterized in that: The multiple measurement surfaces selected in S3 and arranged in an annular direction around the Z axis are all radiating surfaces starting from the Z axis.

6. The method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine according to claim 5, characterized in that: The multiple measurement surfaces selected by S3 are evenly arranged at a certain angle around the Z axis.

7. The method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine according to claim 6, characterized in that: A total of four measuring surfaces are selected, which are arranged along the positive and negative directions of the X axis and the positive and negative directions of the Y axis respectively.

8. The method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine according to any one of claims 1 to 4, characterized in that, in S3, a coordinate measuring machine is used to evenly select 16 inner ring raceway circle fitting measuring points along the intersection line of the inner ring raceway of the spherical roller bearing on the measuring surface.

9. The method for detecting the inner ring raceway position of a spherical roller bearing based on a coordinate measuring machine according to any one of claims 1 to 4 is characterized in that, in S2, 16 points are evenly selected around the axis on an end face of the inner ring of the spherical roller bearing as horizontal reference plane measuring points using a coordinate measuring machine, and a horizontal reference plane is fitted based on the 16 horizontal reference plane measuring points.

10. The method for detecting the position of the inner ring raceway of a spherical roller bearing based on a coordinate measuring machine according to any one of claims 1 to 4, characterized in that: The S3 coordinate measuring machine uses a horizontally set probe, which is rotated around the Z axis to select the inner ring raceway circle fitting measurement point.

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