Angular contact bearing protrusion measuring device and measuring method

Abstract

The present invention discloses a device and method for measuring the protrusion of an angular contact bearing, belonging to the technical field of bearings. The device comprises a base, a supporting mechanism and a leveling mechanism; the supporting mechanism comprises a plurality of annularly distributed linear guide rails, a slider and a first fixing device for fixing the slider; the slider is provided with a spherical fulcrum, an eccentric wheel located on one side of the spherical fulcrum and a second fixing device for fixing the eccentric wheel; the spherical fulcrum is used to support the end face of the bearing to be measured, and limit the bearing to be measured from the bottom; the eccentric wheel is used to contact the outer side face of the bearing to be measured, and limit the bearing to be measured from the side; by loosening the first fixing device and moving the slider, the position of the slider on the linear guide rail can be adjusted, and then the diameter of the circle formed by the inner side connecting lines of the plurality of eccentric wheels can be adjusted; by loosening the second fixing device and rotating the eccentric wheel, the distance between the eccentric wheel and the spherical fulcrum can be adjusted to adapt to the measurement of angular contact bearings with different outer diameters and wall thicknesses.

Description

Technical Field

[0001] The invention belongs to the technical field of axonometric measurement, and in particular relates to a device and a method for measuring the protrusion of an angular contact bearing. Background Art

[0002] Angular contact bearings are a commonly used bearing that can withstand axial and radial loads well and are widely used in machine tools, automobiles, aviation and other fields. For angular contact bearings, the protrusion is an important parameter that affects the performance of the bearing. The protrusion mainly refers to the distance that the inner ring end face protrudes from the outer ring end face at the same end face after the bearing is preloaded. In the production and installation of angular contact bearings, the measurement of the protrusion is also a necessary procedure.

[0003] The existing protrusion measurement device has too many limitations in measuring bearings with different widths, and cannot meet the requirements of measuring bearings with different end face widths with the same tool. When measuring bearings with different end face widths, the fixing mechanism needs to be replaced. Moreover, when measuring the bearing, it is impossible to ensure that the end face and the plane standard part are in the same plane position, and it is impossible to ensure that the measured plane is in a horizontal state, resulting in certain errors in the measurement results, affecting the use of the bearing. Summary of the invention

[0004] The purpose of the present invention is to provide a device and method for measuring the protrusion of an angular contact bearing in order to solve the deficiencies of the prior art.

[0005] The purpose of the present invention is achieved by the following technical solutions:

[0006] The present application provides an angular contact bearing protrusion measurement device, comprising a base, and also comprising a supporting mechanism and a leveling mechanism arranged on the base;

[0007] The support mechanism includes a plurality of linear guide rails distributed in an annular manner, a slider and a first fixing device for fixing the slider; a spherical fulcrum, an eccentric wheel located on one side of the spherical fulcrum and a second fixing device for fixing the eccentric wheel are provided on the slider; the spherical fulcrum is used to support the end face of the angular contact bearing to be measured, and to limit the angular contact bearing to be measured from the bottom; the eccentric wheel is used to contact the outer side face of the angular contact bearing to be measured, and to limit the angular contact bearing to be measured from the side; by loosening the first fixing device and moving the slider, the position of the slider on the linear guide rail can be adjusted, thereby adjusting the diameter of the circle formed by the inner side connecting line of the plurality of eccentric wheels; by loosening the second fixing device and rotating the eccentric wheel, the distance between the eccentric wheel and the spherical fulcrum can be adjusted to adapt to the measurement of angular contact bearings with different outer diameters and wall thicknesses;

[0008] The leveling mechanism is used to adjust the plurality of spherical pivots to be in a horizontal state.

[0009] Preferably, the first fixing device is a first fixing screw.

[0010] Preferably, the sliding block is further provided with a connecting block, and the spherical fulcrum and the eccentric wheel are arranged on the connecting block.

[0011] Preferably, a hemispherical hole is provided on the surface of the connection block;

[0012] A supporting ball is embedded in the hemispherical hole, and the upper part of the supporting ball is exposed from the surface of the connecting block to form the spherical fulcrum.

[0013] Preferably, a threaded hole is provided on the surface of the connecting block, and the eccentric wheel is provided with a through hole passing through the upper and lower surfaces thereof. The second fixing device is a second fixing screw, and the second fixing screw passes through the through hole and the threaded hole. By loosening or tightening the first fixing screw, the eccentric wheel can be rotated or fixed on the connecting block.

[0014] Preferably, the leveling mechanism is a leveling screw that passes through the upper and lower surfaces of the base.

[0015] Preferably, there are three leveling screws.

[0016] Preferably, the linear guide rail, the slider, the spherical fulcrum and the eccentric wheel are three groups.

[0017] Preferably, the angular contact bearing protrusion measuring device further comprises a measuring instrument fixing device arranged on the base.

[0018] The present application also provides a method for measuring the protrusion amount of an angular contact bearing, comprising the following steps:

[0019] S1. First, loosen the first fixing device and the second fixing device, and according to the size of the angular contact bearing to be measured, move the slider and the eccentric wheel so that the inner side of the eccentric wheel can contact the outer side of the angular contact bearing to be measured during measurement, and the spherical fulcrum can just support the outer ring end face of the angular contact bearing to be measured; then lock the first fixing device and the second fixing device to fix the slider and the eccentric wheel;

[0020] S2. Take a plane standard part with the same size as the angular contact bearing to be measured, place it on the spherical fulcrum, then take a level and place it on the plane standard part, and adjust the multiple spherical fulcrums to a horizontal state through the leveling mechanism;

[0021] S3. Remove the plane standard part and the level, take the angular contact bearing to be measured and place it on the spherical fulcrum, apply a predetermined load to the angular contact bearing to be measured, and use a measuring instrument to detect the protrusion of the angular contact bearing to be measured.

[0022] The measuring device provided in the present application can meet the measurement needs of angular contact bearings with different outer diameters and wall thicknesses by setting an eccentric wheel and a slider; by setting a spherical fulcrum and using point contact instead of the surface contact of conventional technology, the contact area between the fulcrum and the end face of the bearing can be reduced, the detection error can be reduced, and the placement error between the plane standard part and the measured bearing can be eliminated; by setting a leveling mechanism, it can be ensured that the detection plane established by multiple spherical fulcrums is in a horizontal state, eliminating the detection error caused by the tilt of the plane when the product is loaded for detection, thereby improving the measurement accuracy. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 It is a structural schematic diagram of a device for measuring the protrusion of an angular contact bearing provided by a preferred embodiment of the present invention;

[0024] Figure 2 is a structural schematic diagram of a support mechanism provided by a preferred embodiment of the present invention;

[0025] Among them, 1-base; 2-leveling mechanism; 3-linear guide rail; 4-slider; 5-first fixing device; 6-spherical fulcrum; 7-eccentric wheel; 8-second fixing device; 9-connecting block; 10-measuring instrument fixing device; 11-measuring instrument; 12-plane standard part; 13-level instrument. DETAILED DESCRIPTION

[0026] In order to better understand the above technical solution, the above technical solution will be described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0027] The present invention provides a device for measuring the protrusion of an angular contact bearing, such as Figures 1-2 As shown, it includes a base 1, and also includes a supporting mechanism and a leveling mechanism 2 arranged on the base. The base is used to support and carry the measuring component.

[0028] The support mechanism includes a plurality of annularly distributed linear guide rails 3, a slider 4, and a first fixing device 5 for fixing the slider; the slider 4 is provided with a spherical pivot 6, an eccentric wheel 7 located on one side of the spherical pivot, and a second fixing device 8 for fixing the eccentric wheel. The spherical pivot 6, the eccentric wheel 7, etc. are preferably 3 groups, and the 3 pivots can establish a stable detection base surface.

[0029] The spherical fulcrum 6 is used to support the end face of the angular contact bearing to be measured, and to limit the angular contact bearing to be measured from the bottom; the spherical fulcrum 6 is used as a support to establish a detection plane, that is, point contact is used instead of the surface contact of conventional technology, which can reduce the contact area between the fulcrum and the end face of the bearing. The contact plane established by the spherical fulcrum eliminates the placement measurement error between the plane standard part and the measured bearing and reduces the detection error.

[0030] The eccentric wheel 7 is used to contact the outer side of the angular contact bearing to be measured, limit the angular contact bearing to be measured from the side, and limit the angular contact bearing to be measured axially and radially together with the spherical fulcrum to prevent the angular contact bearing to be measured from shifting during the measurement process. By loosening the first fixing device and moving the slider, the position of the slider on the linear guide rail can be adjusted, and then the diameter of the circle formed by the inner connecting line of multiple eccentric wheels can be adjusted. By loosening the second fixing device and rotating the eccentric wheel, the distance between the eccentric wheel and the spherical fulcrum can be adjusted to meet the measurement requirements of angular contact bearings with different outer diameters and wall thicknesses.

[0031] If the support mechanism is to stably support the bearing, the inner side of the eccentric wheel as the side support should be in close contact with the outer side of the bearing, and the spherical fulcrum as the bottom support should be completely placed below the outer ring end face of the bearing, avoiding being placed below the ball between the inner and outer rings and below the central shaft hole. The support mechanism on the measuring device in the prior art is fixed in position and can generally only fix bearings of a single size. When measuring bearings of different sizes and wall thicknesses, the support mechanism of the corresponding size needs to be replaced.

[0032] In order to solve the above technical problems, the present application first sets a linear guide and a slider supporting an eccentric wheel and a spherical fulcrum. By adjusting the position of the slider on the linear guide, the diameter of the circle formed by the inner connecting line of multiple eccentric wheels can be adjusted, thereby ensuring that the inner side of the eccentric wheel is in close contact with the outer side of the bearing. However, as mentioned above, in addition to the side support members, the bottom support member should also be completely placed below the outer ring end face of the bearing. For bearings with the same outer diameter, there are also multiple models of inner diameter and wall thickness. If the distance between the side support member and the bottom support member is fixed, it cannot be guaranteed that the bottom support member can be placed below the outer ring of bearings with different wall thicknesses and inner diameters. Therefore, the present application sets the side support member as an eccentric wheel. By rotating the eccentric wheel, the distance between the inner side of the eccentric wheel and the spherical fulcrum can be adjusted, thereby meeting the measurement and use of angular contact bearings with different outer diameters and wall thicknesses.

[0033] The leveling mechanism 2 is used to adjust the multiple spherical pivots to be in a horizontal state. By setting the leveling mechanism, the device can be adjusted to be level, ensuring that the detection plane established by the multiple spherical pivots is in a horizontal state, eliminating the detection error caused by the tilt of the plane when the load is added to the product.

[0034] Therefore, the measuring device provided in the present application can meet the measurement needs of angular contact bearings with different outer diameters and wall thicknesses by setting an eccentric wheel and a slider; by setting a spherical fulcrum and using point contact instead of the surface contact of conventional technology, the contact area between the fulcrum and the end face of the bearing can be reduced, the detection error can be reduced, and the placement error between the plane standard part and the measured bearing can be eliminated; by setting a leveling mechanism, it can be ensured that the detection plane established by multiple spherical fulcrums is in a horizontal state, eliminating the detection error caused by the tilt of the plane when the product is loaded for detection, thereby improving the measurement accuracy.

[0035] Preferably, the first fixing device 5 is a first fixing screw, a threaded hole for the first fixing screw to pass through is provided on the slider, a long hole is provided on the linear guide rail, and the first fixing screw passes through the threaded hole and the long hole in sequence to fix the slider on the linear guide rail.

[0036] Preferably, the slider is further provided with a connecting block 9, on which the spherical fulcrum 6 and the eccentric wheel 7 are arranged. By providing the connecting block, the height of the supporting base surface is increased, and it is convenient to measure the protrusion of the bearing from the bottom.

[0037] Preferably, a hemispherical hole is provided on the surface of the connection block 9; a supporting ball is embedded in the hemispherical hole, and the upper part of the supporting ball is exposed from the surface of the connection block to form a spherical fulcrum 6.

[0038] Preferably, a threaded hole is provided on the surface of the connecting block 9, and the eccentric wheel is provided with a through hole passing through the upper and lower surfaces thereof. The second fixing device is a second fixing screw, and the second fixing screw passes through the through hole and the threaded hole. By loosening or tightening the first fixing screw, the eccentric wheel can be rotated or fixed on the connecting block.

[0039] Preferably, the leveling mechanism 2 is a leveling screw that passes through the upper and lower surfaces of the base, and the number of the leveling screws is preferably three.

[0040] Preferably, the measuring device provided in the present application further comprises a measuring instrument fixing device 10 disposed on the base 1 , which can fix the measuring instrument 11 .

[0041] The present application also provides a method for measuring the protrusion amount of an angular contact bearing as described above, comprising the following steps:

[0042] S1. First, according to the size of the angular contact bearing to be measured, loosen the first fixing device and the second fixing device, move the slider and the eccentric wheel, so that the inner side of the eccentric wheel can contact the outer side of the angular contact bearing to be measured, and the spherical fulcrum can contact the outer ring end face of the angular contact bearing to be measured; then lock the first fixing device and the second fixing device to fix the slider and the eccentric wheel;

[0043] S2. Take a plane standard part with the same size as the angular contact bearing to be measured, place it on the spherical fulcrum, then take a level and place it on the plane standard part, and adjust the multiple spherical fulcrums to a horizontal state by adjusting the leveling mechanism;

[0044] S3. Remove the plane standard part and the level, then place the angular contact bearing to be measured on the spherical fulcrum, apply a predetermined load to the angular contact bearing to be measured, and use the measuring instrument to detect the protrusion of the angular contact bearing to be measured according to the conventional method.

[0045] Although preferred embodiments of the present invention have been described, additional changes and modifications may be made to these embodiments by those skilled in the art once the basic inventive concepts are known. Therefore, the appended claims are intended to be interpreted as including the preferred embodiments and all changes and modifications that fall within the scope of the present invention. Obviously, those skilled in the art may make various changes and modifications to the present invention without departing from the spirit and scope of the present invention. Thus, if these modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include these modifications and variations.

Claims

1. An angular contact bearing protrusion measuring device, comprising a base, characterized in that: It also includes a supporting mechanism and a leveling mechanism disposed on the base; The support mechanism includes a plurality of linear guide rails distributed in an annular manner, a slider and a first fixing device for fixing the slider; a spherical fulcrum, an eccentric wheel located on one side of the spherical fulcrum and a second fixing device for fixing the eccentric wheel are provided on the slider; the spherical fulcrum is used to support the end face of the angular contact bearing to be measured and limit the angular contact bearing to be measured from the bottom; the eccentric wheel is used to contact the outer side face of the angular contact bearing to be measured and limit the angular contact bearing to be measured from the side; by loosening the first fixing device and moving the slider, the position of the slider on the linear guide rail can be adjusted, thereby adjusting the diameter of the circle formed by the inner side connecting line of the plurality of eccentric wheels; by loosening the second fixing device and rotating the eccentric wheel, the distance between the eccentric wheel and the spherical fulcrum can be adjusted to adapt to the measurement of angular contact bearings with different outer diameters and wall thicknesses, so that the inner side of the eccentric wheel is in close contact with the outer side face of the angular contact bearing to be measured during measurement, and the spherical fulcrum is completely placed below the outer ring end face of the angular contact bearing to be measured; The leveling mechanism is used to adjust the plurality of spherical pivots to be in a horizontal state.

2. The angular contact bearing protrusion measuring device according to claim 1, characterized in that: The first fixing device is a first fixing screw.

3. The angular contact bearing protrusion measuring device according to claim 1, characterized in that: The sliding block is also provided with a connecting block, and the spherical fulcrum and the eccentric wheel are arranged on the connecting block.

4. The angular contact bearing protrusion measuring device according to claim 3, characterized in that: The surface of the connecting block is provided with a hemispherical hole; A supporting ball is embedded in the hemispherical hole, and the upper part of the supporting ball is exposed from the surface of the connecting block to form the spherical fulcrum.

5. The angular contact bearing protrusion measuring device according to claim 3, characterized in that: A threaded hole is provided on the surface of the connecting block, and a through hole is provided on the eccentric wheel which passes through the upper and lower surfaces thereof. The second fixing device is a second fixing screw which passes through the through hole and the threaded hole. By loosening or tightening the first fixing screw, the eccentric wheel can be rotated or fixed on the connecting block.

6. The angular contact bearing protrusion measuring device according to claim 1, characterized in that: The leveling mechanism is a leveling screw that passes through the upper and lower surfaces of the base.

7. The angular contact bearing protrusion measuring device according to claim 6, characterized in that: There are three leveling screws.

8. The angular contact bearing protrusion measuring device according to claim 1, characterized in that: The linear guide rail, the slider, the spherical fulcrum and the eccentric wheel are three groups.

9. The angular contact bearing protrusion measuring device according to claim 1, characterized in that: The angular contact bearing protrusion measurement device also includes a measuring instrument fixing device arranged on the base.

10. The measuring method of the angular contact bearing protrusion measuring device according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. First, loosen the first fixing device and the second fixing device, and according to the size of the angular contact bearing to be measured, move the slider and the eccentric wheel so that the inner side of the eccentric wheel can contact the outer side of the angular contact bearing to be measured during measurement, and the spherical fulcrum can just support the outer ring end face of the angular contact bearing to be measured; then lock the first fixing device and the second fixing device to fix the slider and the eccentric wheel; S2. Take a plane standard part with the same size as the angular contact bearing to be measured, place it on the spherical fulcrum, then take a level and place it on the plane standard part, and adjust the multiple spherical fulcrums to a horizontal state by adjusting the leveling mechanism; S3. Remove the plane standard part and the level, then take the angular contact bearing to be measured and place it on the spherical fulcrum, apply a predetermined load to the angular contact bearing to be measured, and use a measuring instrument to detect the protrusion of the angular contact bearing to be measured.

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