Method for detecting angle of large-convexity tapered roller of aircraft bearing

Abstract

The invention discloses an aircraft bearing large-convexity tapered roller angle detection method, and relates to the technical field of bearing detection. The objective of the invention is to solve the problem that when the angle of a large-convexity tapered roller is detected in the prior art, the angle can be determined by using a D744 axis instrument to detect the size variation through a fixed distance, and the measurement error is large due to the convexity influence of the tapered roller. Size detection is carried out on the large-convexity tapered rollers at different point positions in sequence through the three D051 axis instruments, and a deviation value is measured through comparison with a standard part; respectively subtracting the midpoint size variation from the variation of the maximum size and the minimum size measured in the step 1 to obtain the actual deviation value of the comparison theoretical calculation standard value from the large end face to the small end face; finally, whether the angle is qualified or not is judged through the deviation value of the two points. The method is suitable for accurately measuring the angle of the large-convexity tapered roller.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of bearing detection, and in particular to an aviation bearing large convexity conical roller angle detection method. BACKGROUND

[0002] The common cylindrical roller angle standard part design idea is to process the generatrix of the conical roller into a straight line segment, to make the large end face of the standard part adhere to the left side of the detection platform baffle, to adjust the standard inclination angle by adjusting the positions of the adjusting bolts on the left and right sides, to complete the standard adjustment when the table points move a fixed distance and the pointer changes close to 0. Then, the size is adjusted to the standard part size, and the overall adjustment of the measuring instrument can be completed. During detection, the product is replaced and moved for detection according to the moving range of the table points during adjustment, and the deviation value at this time is the conical angle deviation of the conical roller.

[0003] As described above, when the angle of the large convexity conical roller is detected, the D744 shaft instrument is used to detect the size change through a fixed distance to determine the angle. Due to the influence of the convexity of the conical roller, the measurement error is large. SUMMARY

[0004] The present application is to solve the problem that when the angle of the large convexity conical roller is detected, the D744 shaft instrument is used to detect the size change through a fixed distance to determine the angle. Due to the influence of the convexity of the conical roller, the measurement error is large. Therefore, an aviation bearing large convexity conical roller angle detection method is proposed.

[0005] The aviation bearing large convexity conical roller angle detection method of the present application has the following specific method:

[0006] Step one, the size of the large convexity conical roller is detected by the touch points of the three D051 shaft instruments in turn, and the deviation value is measured by comparing the standard part;

[0007] Step two, the change amount of the maximum size and the minimum size measured in step one is subtracted from the midpoint size change amount, respectively, and the actual deviation amount of the large end face to the small end face compared with the theoretical calculation standard value is obtained;

[0008] Step three, whether the angle is qualified is determined by the two-point deviation amount;

[0009] Further, the specific steps of detecting the size of the large convexity conical roller by the touch points of the three D051 shaft instruments in step one are as follows:

[0010] Step one, the three D051 shaft instruments are placed in a three-point manner on the experimental table;

[0011] Step 1 and Step 2: By driving three D051 shaft instruments, the detection contacts of the three D051 shaft instruments are sequentially brought into contact with the outer circumferential surface of the large-convex tapered roller.

[0012] Step 13: At this point, you can take readings of the three D051 axis measuring instruments;

[0013] Furthermore, in steps one and two, the detection contacts of the three D051 shaft instrument can simultaneously generate a certain clamping force with the outer circumferential surface of the large-convex tapered roller.

[0014] Furthermore, before driving the three D051 axis instruments in steps one and two, the three D051 axis instruments are calibrated and zeroed.

[0015] Furthermore, in step one, the three D051 shaft instruments are placed on the experimental table in a three-point arrangement, so that the detection contacts of the three D051 shaft instruments can be fitted as a large-convex tapered roller generatrix.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] This invention overcomes the shortcomings of existing technologies. Due to the significant impact of flatness on the measurement of large-convex tapered rollers in the original method, the test data is unstable. The improved method simultaneously measures the dimensions of the large-convex tapered roller using three contacts of a D051 shaft gauge, comparing the deviation value with a standard part. Then, the change in the maximum and minimum dimensions measured in step one is subtracted from the change in the midpoint dimension, yielding the actual deviation from the theoretically calculated standard value between the large and small end faces. Finally, the angle is judged for compliance based on the deviation at two points. The difficulty of traditional testing methods lies in the leveling of the standard part, which is further complicated by large-convex cylindrical rollers. Compared to traditional methods, this invention's testing method, which only measures the actual dimensions at fixed points to calculate the cone angle deviation from the dimensional change, effectively improves the accuracy of angle testing for large-convex tapered rollers. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of a method for detecting the angle of a large crown tapered roller bearing according to the present invention.

[0019] Figure 2 This is a schematic diagram of an existing method for detecting the angle of tapered rollers with high convexity. Detailed Implementation

[0020] Specific implementation method one: Combining Figure 1 and Figure 2 This embodiment describes a method for detecting the angle of a tapered roller bearing with high crown. The specific method is as follows:

[0021] Step 1: Use the three contacts of the D051 shaft instrument to sequentially measure the dimensions of the large crown tapered roller and compare the deviation value with the standard part.

[0022] Step 2: Subtract the change in the midpoint dimension from the changes in the maximum and minimum dimensions measured in Step 1. This gives the actual deviation of the theoretically calculated standard value from the large end face to the small end face.

[0023] Step 3: Determine whether the angle is qualified by measuring the deviation between two points;

[0024] In this specific embodiment, the measurement data for large-convex tapered rollers is greatly affected by flatness in the original method, resulting in unstable test data. The improved method uses three contacts of a D051 shaft gauge to simultaneously measure the dimensions of the large-convex tapered rollers, comparing the deviation value with that of a standard part. Then, the change in the maximum and minimum dimensions measured in step one is subtracted from the change in the midpoint dimension, which gives the actual deviation from the theoretically calculated standard value between the large end face and the small end face. Finally, the angle is judged to be qualified based on the deviation at two points. The difficulty of traditional testing methods lies in the leveling of the standard part, and large-convex cylindrical rollers further increase the difficulty of adjustment. Compared with traditional testing methods, the testing method of this application can calculate the cone angle deviation by measuring the actual value of the dimensions at fixed points, effectively improving the accuracy of angle testing for large-convex tapered rollers.

[0025] Specific Implementation Method Two: Combining Figure 1 This embodiment further defines the detection method described in Specific Embodiment 1. The specific steps of the method for detecting the angle of a large crown tapered roller in aerospace bearings described in this embodiment, in step one, are as follows:

[0026] Step 11: Place the three D051 axis instruments in a three-point configuration on the experimental table;

[0027] Step 1 and Step 2: By driving three D051 shaft instruments, the detection contacts of the three D051 shaft instruments are sequentially brought into contact with the outer circumferential surface of the large-convex tapered roller.

[0028] Step 13: At this point, you can take readings of the three D051 axis measuring instruments.

[0029] Specific implementation method three: Combining Figure 1 This embodiment further defines the detection method described in Specific Embodiment Two. In the method for detecting the angle of a large-convex tapered roller bearing described in this embodiment, in steps one and two, the detection contacts of three D051 shaft instruments can simultaneously generate a certain clamping force with the outer circumferential surface of the large-convex tapered roller.

[0030] Specific implementation method four: Combination Figure 1 This embodiment further defines the detection method described in Specific Embodiment Three. In this embodiment, the method for detecting the angle of a large crown tapered roller bearing is described, wherein before driving the three D051 shaft instruments in steps one and two, the three D051 shaft instruments are calibrated to zero.

[0031] Specific Implementation Method Five: Combining Figure 1 This embodiment further defines the detection method described in Specific Embodiment Two. In this embodiment, a method for detecting the angle of a large crown tapered roller bearing is described. In step one, three D051 shaft instruments are placed in a three-point configuration on the test bench so that the detection contact points of the three D051 shaft instruments can be fitted to the generatrix of the large crown tapered roller.

Claims

1. A method for detecting the angle of a tapered roller bearing with high crown in aerospace bearings, characterized in that: The specific method is as follows: Step 1: Use the three contacts of the D051 shaft instrument to sequentially measure the dimensions of the large crown tapered roller and compare the deviation value with the standard part. Step 2: Subtract the change in the midpoint dimension from the changes in the maximum and minimum dimensions measured in Step 1. This gives the actual deviation of the theoretically calculated standard value from the large end face to the small end face. Step 3: Determine whether the angle is qualified by measuring the deviation between the two points.

2. The method for detecting the angle of a large crown tapered roller bearing according to claim 1, characterized in that: The specific steps for performing dimensional inspection on the large-convex tapered roller in step one by sequentially through the three contacts of the D051 shaft instrument are as follows; Step 11: Place the three D051 axis instruments in a three-point configuration on the experimental table; Step 1 and 2: By driving three D051 shaft instruments, the detection contacts of the three D051 shaft instruments are sequentially brought into contact with the outer circumferential surface of the large-convex tapered roller. Step 13: At this point, you can take readings of the three D051 axis measuring instruments.

3. The method for detecting the angle of a large crown tapered roller bearing according to claim 2, characterized in that: In steps one and two, the detection contacts of the three D051 shaft instruments can simultaneously generate a certain clamping force with the outer circumferential surface of the large-convex tapered roller.

4. The method for detecting the angle of a large crown tapered roller bearing according to claim 3, characterized in that: Before driving the three D051 axis instruments in steps one and two, the three D051 axis instruments are calibrated and zeroed.

5. The method for detecting the angle of a large crown tapered roller bearing according to claim 2, characterized in that: In step one, the three D051 shaft instruments are placed on the experimental table in a three-point arrangement so that the detection contacts of the three D051 shaft instruments can be fitted as a large-convex tapered roller generatrix.

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