Multi-parameter detection system and detection method for peach-shaped groove raceway of slewing bearing

Abstract

The invention relates to the technical field of bearing parameter measurement, in particular to a slewing bearing peach-shaped groove raceway multi-parameter detection system and method, the detection system comprises a diameter detection assembly, the diameter detection assembly comprises a support block pair, a cross beam, a tube ruler support pair, a measuring instrument and a contact hemisphere; the supporting block pair is detachably installed on the cross beam, and the tube ruler support pair is detachably installed on the cross beam and can move up and down. A supporting rod is arranged on the pipe ruler support pair, the contact hemisphere is fixed to the first end of the supporting rod, and the measuring instrument is detachably installed at the second end of the supporting rod. And the radius of the upper arc of the groove-shaped raceway is equal to that of the lower arc of the groove-shaped raceway. According to the invention, the technical problem of complex parameter measurement operation of the groove-shaped raceway of the slewing bearing in the prior art is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of bearing parameter measurement, and in particular to a multi-parameter detection system and method for a peach-shaped groove raceway of a slewing bearing. Background Art

[0002] Currently, the industry's most common method for measuring grooved raceway diameters involves marking the axial location of the bearing raceway diameter. The diameter is then manually measured at the contact point using a radial diameter measuring instrument. The measuring head uses a ball head, which is tangential to the raceway. This tangency point can lead to a certain degree of error compared to the actual measurement. Repeated measurements can cause stress and wear on the grooved raceway, affecting the raceway surface quality and, in turn, the bearing's precision characteristics. Furthermore, radial clearance adjustment is required during bearing assembly, and this radial clearance value is directly related to the accuracy of the raceway diameter measurement. Alternative technologies can effectively circumvent these issues by performing automated, non-contact raceway position scanning of the inner ring raceway, enabling diameter measurement. However, as a software-based inspection system, while highly accurate, this requires initial and secondary position calibration steps, followed by scanning, three-dimensional modeling, and spatial position adjustment, making it unsuitable for rapid and convenient inter-process inspection in current industrial applications. Summary of the Invention

[0003] The present invention aims to provide a multi-parameter detection system and method for a peach-shaped groove raceway of a slewing bearing, so as to solve the technical problem of complex parameter measurement operation of the groove raceway of a slewing bearing in the prior art. The specific technical solution is as follows:

[0004] The present invention provides a multi-parameter detection system for a slewing bearing peach-shaped groove raceway, comprising a diameter detection component, which comprises a pair of support blocks, a crossbeam, a pair of pipe ruler brackets, a measuring instrument and a contact hemisphere; the pair of support blocks is detachably mounted on the crossbeam, and the pair of pipe ruler brackets is detachably and movably mounted on the crossbeam; a support rod is provided on the pair of pipe ruler brackets, the contact hemisphere is fixed to a first end of the support rod, and the measuring instrument is detachably mounted on a second end of the support rod; the radius of an upper circular arc of the grooved raceway is equal to the radius of a lower circular arc, a first reference point in contact with the contact hemisphere is provided on the upper circular arc of the grooved raceway, and a second reference point in contact with the contact hemisphere is provided on the lower circular arc of the grooved raceway, and lines connecting the first reference point, the second reference point and the center of the contact hemisphere are respectively at an angle of 45° to a horizontal line.

[0005] A further improvement of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention is that it further includes a raceway arc radius detection template, the raceway arc radius detection template is provided with a first arc and a second arc facing each other;

[0006] Assuming that the radius of the contact hemisphere is R3, the radius of the first arc is R5, and the radius of the second arc is R6, then R5=R3+0.05±0.01, R6=R3-0.05±0.01.

[0007] A further improvement of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention is that it also includes a raceway arc eccentricity detection template, and the raceway arc eccentricity detection template is provided with a third arc and a fourth arc facing back;

[0008] Suppose the eccentricity between the centers of the first reference point and the second reference point is d, the eccentricity between the centers of the first reference point and the second reference point on the third arc is d1, the eccentricity between the centers of the first reference point and the second reference point on the fourth arc is d2, the radius of the third arc is R7, and the radius of the fourth arc is R8, then R7=R3+0.05±0.01, R8=R3-0.05±0.01, d1=(d+0.05)(0,-0.005), d2=(d-0.05)(+0.005,0).

[0009] A further improvement of the multi-parameter detection system of the peach-shaped groove raceway of the slewing bearing of the present invention is that it also includes a contact point chord length detection template, which is provided with a semicircular arc, and a first groove is opened on the semicircular arc plate corresponding to the first reference point, and a second groove is opened on the semicircular arc plate corresponding to the second reference point.

[0010] A further improvement of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention is that it also includes a raceway position detection component, which includes a measuring ball and a depth gauge. The depth gauge is provided with a positioning baffle, and the measuring ball is detachably mounted on the end of the depth gauge.

[0011] The present invention also provides a detection method using the above-mentioned slewing bearing peach-shaped groove raceway multi-parameter detection system, wherein the groove raceway diameter measurement comprises the following steps:

[0012] When measuring the outer ring groove raceway, install the ruler bracket pair inside the support block pair, then set the support rods of the ruler bracket pair back to back, install a contact hemisphere at the back-facing end of the support rod, install a measuring instrument at the opposite end of the support rod, and calibrate the installation height of the ruler bracket pair through a length measuring machine; apply powder dye at the first reference point and the second reference point in the groove raceway; fit the support block pair to the top surface of the ring of the groove raceway; adjust the contact hemisphere to fit it to the groove raceway, and adjust the measuring instrument for fine-tuning and recording the value; retract the ruler bracket pair and remove the contact hemisphere, and observe whether there is powder dye on the surface of the contact hemisphere. If so, the recorded value is the outer ring groove raceway diameter. If not, the recorded value is inaccurate.

[0013] When measuring the inner ring groove raceway, install the ruler bracket pair on the outside of the support block pair, then set the support rods of the ruler bracket pair relative to each other, install a contact hemisphere at the opposite end of the support rod, install a measuring instrument at the back end of the support rod, and calibrate the installation height of the ruler bracket pair through a length measuring machine; apply powder dye at the first reference point and the second reference point in the groove raceway; fit the support block pair to the top surface of the workpiece of the groove raceway; adjust the contact hemisphere to stick to the groove raceway, and adjust the measuring instrument to make fine adjustments and record the values; retract the ruler bracket pair and remove the contact hemisphere, and observe whether there is powder dye on the surface of the contact hemisphere. If so, the recorded value is the diameter of the inner ring groove raceway. If not, the recorded value is inaccurate.

[0014] A further improvement of the multi-parameter detection method of the peach-shaped groove raceway of the slewing bearing of the present invention is that the measurement of the arc radius of the groove raceway includes the following steps:

[0015] The light gap method is used for testing. The first arc of the raceway arc radius testing template is attached to the groove raceway arc. If there is no gap between the groove raceway arc and the first arc, the groove raceway arc radius is the largest and it is judged to be qualified. If there is a gap in the middle between the groove raceway arc and the first arc, it proves that the groove raceway radius is between R5 and R6 and it is judged to be qualified. If there is a gap on both sides between the groove raceway arc and the first arc, the groove raceway arc radius is too large and it is judged to be unqualified.

[0016] Use the second arc of the raceway arc radius detection template to stick to the groove raceway arc. If the groove raceway arc and the second arc fit together without any gaps, the groove raceway arc radius is the smallest and is considered qualified. If gaps appear on both sides between the groove raceway arc and the second arc, it proves that the groove raceway radius is between R5 and R6 and is considered qualified. If gaps appear in the middle between the groove raceway arc and the second arc, the groove raceway arc radius is too small and is considered unqualified.

[0017] A further improvement of the multi-parameter detection method of the peach-shaped groove raceway of the slewing bearing of the present invention is that the eccentricity measurement of the groove raceway profile includes the following steps:

[0018] The light gap method is used for testing. The third arc of the raceway arc radius testing template is attached to the groove raceway arc. If there is no gap between the groove raceway arc and the third arc, the groove raceway arc radius is the largest and it is judged to be qualified. If there is a gap in the middle between the groove raceway arc and the third arc, it proves that the groove raceway radius is between R7 and R8 and it is judged to be qualified. If there is a gap on both sides between the groove raceway arc and the third arc, the groove raceway arc radius is too large and it is judged to be unqualified.

[0019] Use the fourth arc of the raceway arc radius detection template to stick to the groove raceway arc. If the groove raceway arc and the fourth arc fit together without any gaps, the groove raceway arc radius is the smallest and is considered qualified. If gaps appear on both sides between the groove raceway arc and the fourth arc, it proves that the groove raceway radius is between R7 and R8 and is considered qualified. If gaps appear in the middle between the groove raceway arc and the fourth arc, the groove raceway arc radius is too small and is considered unqualified.

[0020] A further improvement of the multi-parameter detection method of the peach-shaped groove raceway of the slewing bearing of the present invention is that the chord length measurement of the contact point of the groove raceway includes the following steps:

[0021] The distance between the first reference point and the second reference point is the contact point chord length. Remove the contact hemisphere from the support rod, evenly apply powder dye on the spherical surface of the contact hemisphere, and then draw it across the grooved raceway. The powder dye on the contact hemisphere at the first reference point and the second reference point is stained on the grooved raceway. Fit the contact point chord length detection template to the grooved raceway. If the first groove and the second groove of the contact point chord length detection template are located at the powder dye at the first reference point and the second reference point respectively, the contact point chord length is qualified, otherwise the contact point chord length is unqualified.

[0022] A further improvement of the multi-parameter detection method of the peach-shaped groove raceway of the slewing bearing of the present invention is that the groove raceway position measurement includes the following steps:

[0023] Place the measuring ball against the grooved raceway, adjust the position of the positioning baffle so that it is against the top surface of the raceway ring, and use the depth gauge to read the distance between the highest point of the measuring ball and the top surface of the raceway ring. This distance plus the radius of the measuring ball is the center distance of the grooved raceway.

[0024] The application of the technical solution of the present invention has the following beneficial effects:

[0025] The multi-parameter detection system of the peach-shaped groove raceway of the slewing bearing of the present invention can meet the measurement of multiple parameters such as the diameter, groove raceway arc radius, groove raceway arc eccentricity, groove raceway contact point chord length and groove raceway position of the slewing bearing peach-shaped groove raceway through a diameter detection component, a raceway arc radius detection template, a raceway arc eccentricity detection template, a contact point chord length detection template and a raceway position detection component. Moreover, each measuring tool is simple to use and convenient to measure, thereby solving the technical problem of complex parameter measurement operation of the groove raceway of the slewing bearing in the prior art. By utilizing the characteristics of the grooved raceway, the diameter detection component does not require leveling, saving the time of leveling operation; the diameter detection component can realize the measurement of grooved raceway diameters of multiple specifications by replacing the contact hemisphere, increasing the versatility of the device and reducing costs; the diameter detection component detects whether the contact is good by applying powdered dye at the contact point, which has the advantages of being cheap, easy to obtain and easy to operate; the diameter detection component is tightly attracted to the workpiece through a magnetic switch setting, and the magnetic device has a hinge function that can be bent at different angles to adjust the distance to the bearing end face, ensuring no axial displacement and improving measurement accuracy; the device adjusts the contact hemisphere through a dial indicator to achieve fine-tuning of radial displacement, can record data, and achieve accurate measurement of radial diameter.

[0026] The raceway arc radius detection template and the raceway arc eccentricity detection template are used. One end is a large-diameter arc and the other end is a small-diameter arc. The light gap method is used for detection. This test can be performed on a processing machine tool. The qualified or unqualified conclusion can be drawn directly by comparing the templates. It has the characteristics of being able to detect at the processing station and quickly obtain results. Based on the principle that the gaps on both sides of the arc are too large in radius, the gaps in the middle of the arc are small in radius, the same radius is considered for perfect contact, and the radius between the large-diameter arc and the small-diameter arc is considered qualified, the raceway arc radius, eccentricity, raceway center distance, and contact point chord length can be measured in a durable, convenient, fast, accurate, and economical manner. It is particularly suitable for enterprise production and detection use.

[0027] In addition to the above-described objects, features and advantages, the present invention has other objects, features and advantages. The present invention will be further described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] The accompanying drawings, which constitute part of this application, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an undue limitation of the present invention. In the accompanying drawings:

[0029] Figure 1 This is an enlarged view of the details of the contact hemisphere and grooved raceway of the multi-parameter detection system for the peach-shaped groove raceway of the slewing bearing of the present invention;

[0030] Figure 2Schematic diagram of outer ring groove raceway measurement of the slewing bearing peach groove raceway multi-parameter detection method of the present invention;

[0031] Figure 3 This is a schematic diagram of measuring the inner ring groove raceway of the slewing bearing peach-shaped groove raceway multi-parameter detection method of the present invention;

[0032] Figure 4 This is a schematic diagram of the contact hemisphere of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention contacting the groove raceway after being tilted at a certain angle;

[0033] Figure 5 Schematic diagram of the contact between the contact hemisphere and the grooved raceway in the multi-parameter detection system of the slewing bearing peach-shaped groove raceway in the tilted and horizontal conditions of the present invention;

[0034] Figure 6 This is a diagram of the vertical state of the articulated device of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention;

[0035] Figure 7 This is a diagram showing the tilting state of the articulated device of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention;

[0036] Figure 8 Schematic diagram of the structure of the raceway arc radius detection sample plate of the slewing bearing peach groove raceway multi-parameter detection system of the present invention;

[0037] Figure 9 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when the gap is found in the middle position between the groove raceway arc and the first arc (qualified state);

[0038] Figure 10 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when the positions on both sides between the groove raceway arc and the second arc are through-slit (qualified state);

[0039] Figure 11 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when the groove raceway arc and the first arc are tightly fitted (qualified state);

[0040] Figure 12 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of the slewing bearing of the present invention when the groove raceway arc and the second arc are tightly fitted (qualified state);

[0041] Figure 13 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when there are gaps on both sides between the groove raceway arc and the first arc (unqualified state);

[0042] Figure 14Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when a gap is formed in the middle position between the groove raceway arc and the second arc (unqualified state);

[0043] Figure 15 This is a schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when the first arc is detected and the middle part of the raceway curved surface has uneven penetration (unqualified state);

[0044] Figure 16 Schematic diagram of the structure of the raceway arc radius detection sample plate of the slewing bearing peach groove raceway multi-parameter detection system of the present invention;

[0045] Figure 17 This is a schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when the positions on both sides between the groove raceway arc and the fourth arc are through-slit (qualified state);

[0046] Figure 18 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when the intermediate position between the groove raceway arc and the third arc is through-seam (qualified state);

[0047] Figure 19 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when the groove raceway arc and the fourth arc are tightly fitted together (qualified state);

[0048] Figure 20 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of the slewing bearing of the present invention when the groove raceway arc and the third arc are tightly fitted (qualified state);

[0049] Figure 21 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when there are gaps on both sides between the groove raceway arc and the third arc (unqualified state);

[0050] Figure 22 Schematic diagram of the multi-parameter detection method for the peach-shaped groove raceway of a slewing bearing according to the present invention when a gap is formed in the middle position between the groove raceway arc and the fourth arc (unqualified state);

[0051] Figure 23 Schematic diagram of the contact point chord length detection sample structure of the slewing bearing peach groove raceway multi-parameter detection system of the present invention;

[0052] Figure 24 It is a schematic diagram of the raceway position detection component of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention using a measuring ball to measure the groove raceway position;

[0053] Figure 25This is a schematic diagram of the grooved raceway position measurement using a contact point chord length detection template in the raceway position detection component of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention. Figure 1 ;

[0054] Figure 26 This is a schematic diagram of the grooved raceway position measurement using a contact point chord length detection template in the raceway position detection component of the slewing bearing peach-shaped groove raceway multi-parameter detection system of the present invention. Figure 2 .

[0055] Among them, 1. contact hemisphere; 2. upper arc; 3. lower arc; 4. groove; 5. screw; 6. first eccentric center; 7. second eccentric center; 8. contact hemisphere center; 9. first reference point; 10. second reference point; 11. intersection of contact hemisphere and horizontal line; 12. pair of support blocks; 12.1. magnetic device; 12.2. hinge device; 13. pair of pipe ruler brackets; 14. measuring instrument, 15. outer ring; 16. inner ring; 17. ferrule; 18. measuring ball; 19. depth gauge; 20. positioning baffle. DETAILED DESCRIPTION

[0056] The embodiments of the present invention are described in detail below with reference to the accompanying drawings.

[0057] See also Figures 1 to 26 As shown, a multi-parameter detection system for a slewing bearing peach-shaped groove raceway includes a diameter detection component, which includes a support block pair 12, a crossbeam, a pipe ruler bracket pair 13, a measuring instrument 14 and a contact hemisphere 1; the support block pair 12 is detachably mounted on the crossbeam, and the pipe ruler bracket pair 13 is detachably and movably mounted on the crossbeam; a support rod is provided on the pipe ruler bracket pair 13, the contact hemisphere 1 is fixed to the first end of the support rod, and the measuring instrument 14 is detachably mounted on the second end of the support rod; the radius of the upper arc 2 of the groove raceway is equal to the radius of the lower arc 3, the upper arc 2 of the groove raceway is provided with a first reference point 9 that contacts the contact hemisphere 1, and the lower arc 3 of the groove raceway is provided with a second reference point 10 that contacts the contact hemisphere 1, and the lines connecting the first reference point 9 and the second reference point 10 and the center of the contact hemisphere 1 are respectively at an angle of 45° to the horizontal line.

[0058] In this embodiment, the contact hemisphere 1 is made of steel and can be formed by cutting a steel ball. It has high wear resistance and fits well with the grooved raceway to precisely control the contact point. The support rod uses a screw 5, and a threaded hole for the screw 5 to be screwed into is provided at the center 8 of the contact hemisphere, so that the contact hemisphere 1 can be replaced, achieving universal use of raceways of multiple specifications. The measuring instrument 14 can use a dial indicator. The support block pair 12 can be provided in multiple pairs as needed, each pair including two support blocks. The bottom of the support block is connected to a magnetic device 12.1 with controllable magnetism via an articulated device 12.2. The articulated device 12.2 can be bent at different angles to adjust the distance between the crossbeam and the top surface of the bearing ring 17. Through the magnetic device 12.1 and the articulated device 12.2, the end faces at different distances can be tightly fitted, allowing universal measurement of the diameter of raceways of multiple specifications. The 45° angular contact ball bearing grooved raceway provides conditions for the contact hemisphere 1 to serve as a measuring head, allowing accurate diameter measurement even in a non-horizontal state.

[0059] like Figure 1 As shown, reference numeral 2 is the upper arc centered at point 7, with a radius of R2; reference numeral 3 is the lower arc centered at point 6, with a radius of R1; and reference numeral 4 is the groove with a radius of R4. Arcs 2, 3, and 4 together form the grooved raceway of the bearing. The intersections of upper and lower arcs 2 and 3 with contact hemisphere 1 are located at first and second datum points 9 and 10, respectively, forming 45° angles with the horizontal line. L is the chord length of the contact point. The intersection of contact hemisphere 1 and the horizontal line is reference numeral 11. During bearing production, the dimensions of the raceways R2, R3, R1, R4, and the eccentricity d are typically produced to the desired dimensions. Only the diameter D between point 11 and the bottom of the groove is allowed to be machined. Therefore, during production, the distance between point 11 and the bottom of the groove must be measured as the raceway diameter D. The first and second eccentric centers 6 and 7 are separated by a certain eccentricity d from the center of the steel ball 8. The first eccentric center 6 and the second eccentric center 7 pass through the center of the steel ball 8, so their intersection is necessarily at a 45° angle, forming a four-point 45° angular contact ball bearing. Screw 5 is connected to the pipe ruler bracket 13, ensuring the mating connection between the contact hemisphere 1 and the pipe ruler bracket 13. Furthermore, the pipe ruler bracket 13 is provided with multiple circular cutouts that allow for up and down sliding and are secured with nuts. This allows for adjustment of various end faces and raceway heights, enabling universal testing of all specifications.

[0060] Preferably, it further comprises a raceway arc radius detection template, wherein the raceway arc radius detection template is provided with a first arc and a second arc facing back to back;

[0061] Assume that the radius of the contact hemisphere 1 is R3, the radius of the lower arc 3 is R1, the radius of the upper arc 2 is R2, R1=R2=R3+0.05, the radius of the first arc is R5, and the radius of the second arc is R6, then R5=R3+0.05±0.01, R6=R3-0.05±0.01.

[0062] According to the lower arc 3 and the upper arc 2 of the grooved raceway, the raceway arc radius detection template, the raceway arc eccentricity detection template and the contact point chord length detection template are made. The detection is carried out using the light gap method. The detection can be carried out on the processing machine tool. The qualified or unqualified conclusion can be drawn directly by comparing the templates. It has the characteristics of being able to detect at the processing station and quickly obtain the results.

[0063] Preferably, it further comprises a raceway arc eccentricity detection template, wherein the raceway arc eccentricity detection template is provided with a third arc and a fourth arc facing back;

[0064] Assume that the eccentricity between the centers of the first and second reference points 9 and 10 is d, the eccentricity between the centers of the first and second reference points 9 and 10 on the third arc is d1, the eccentricity between the centers of the first and second reference points 9 and 10 on the fourth arc is d2, the radius of the third arc is R7, and the radius of the fourth arc is R8. Then R7 = R3 + 0.05 ± 0.01, R8 = R3 - 0.05 ± 0.01, d1 = (d + 0.05) (0, -0.005), d2 = (d - 0.05) (+0.005, 0). Since the eccentricity fluctuates by 0.05, it changes to R7 and R8. When the eccentricity deviates by 0.05, it needs to pass through the center of the circle. The total deviation between the chord lengths is 1, and the unilateral deviation is 0.5. Calculation shows that R7 and R8 change by exactly 0.05. When the eccentricity changes by 0.05, the radius also deviates by 0.05. (0, -0.005) in the d1 formula represents a negative deviation, while (+0.005, 0) in the d2 formula represents a positive deviation.

[0065] Preferably, the contact point chord length detection template is further included. The contact point chord length detection template is provided with a semicircular arc. A first groove is provided on the semicircular arc plate corresponding to the first reference point 9, and a second groove is provided on the semicircular arc plate corresponding to the second reference point 10. Furthermore, the contact point chord length detection template is further provided with a handle, the end of the handle being located at the center of the semicircular arc.

[0066] Preferably, a raceway position detection assembly is further included, which includes a measuring ball 18 and a depth gauge 19 . A positioning baffle 20 is provided on the depth gauge 19 , and the measuring ball 18 is detachably mounted on the end of the depth gauge 19 .

[0067] Furthermore, a contact point chord length detection template can be used instead of the measuring ball 18 to be installed on the depth gauge 19. An opening for the depth gauge 19 to pass through is provided on the chord length handle of the contact point chord length detection template, and then it is fixed to the depth gauge 19 by other fasteners.

[0068] In addition to the diameter measuring device, the measuring device of the present invention has developed a multi-parameter detection method for grooved raceways. According to the light gap method, a raceway arc radius detection template is used to measure the raceway radius, an eccentricity detection template is used to measure the eccentricity, and a contact point detection template is used to measure the contact point chord length and the raceway center distance, etc. The above templates can all be made of 42CrMo steel after quenching. The light gap method is a method of judging shape errors by observing the light gap between the "measurement reference" and the surface to be measured. It mainly uses the transmission or reflection of visible light to detect shape errors such as straightness and flatness of the workpiece surface. The basic principle of the light gap method is to use the eyes to observe the visible light gap through the actual gap, and compare it with the standard light gap to judge the size of the gap.

[0069] The present invention also provides a detection method using the above-mentioned slewing bearing peach-shaped groove raceway multi-parameter detection system, wherein the groove raceway diameter measurement comprises the following steps:

[0070] like Figure 2 and Figure 3 As shown, when measuring the grooved raceway of the outer ring 15, the ruler bracket pair 13 is installed inside the support block pair 12, and then the support rods of the ruler bracket pair 13 are set back to back, and the contact hemisphere 1 is installed at the end of the support rod facing away, and the measuring instrument 14 is installed at the end opposite to the support rod, and the installation height of the ruler bracket pair 13 is calibrated by a length measuring machine; powder dye is applied at the first reference point 9 and the second reference point 10 in the grooved raceway; the support block pair 12 is attached to the top surface of the ring 17 of the grooved raceway; the contact hemisphere 1 is adjusted to stick to the grooved raceway, and the measuring instrument 14 is adjusted to fine-tune and record the value; the ruler bracket pair 13 is retracted and the contact hemisphere 1 is removed, and the surface of the contact hemisphere 1 is observed to see if there is powder dye. If so, the recorded value is the diameter of the grooved raceway of the outer ring 15. If not, the recorded value is inaccurate because the arc of the grooved raceway of the outer ring 15 does not meet the requirements.

[0071] When measuring the grooved raceway of the inner ring 16, install the ruler bracket pair 13 on the outside of the support block pair 12, then set the support rods of the ruler bracket pair 13 relative to each other, install the contact hemisphere 1 at the opposite end of the support rod, install the measuring instrument 14 at the back end of the support rod, and calibrate the installation height of the ruler bracket pair 13 through a length measuring machine; apply powder dye at the first reference point 9 and the second reference point 10 in the grooved raceway; fit the support block pair 12 to the top surface of the workpiece of the grooved raceway; adjust the contact hemisphere 1 to stick to the grooved raceway, and adjust the measuring instrument 14 to make fine adjustments and record the values; retract the ruler bracket pair 13 and move out of the contact hemisphere 1, and observe whether there is powder dye on the surface of the contact hemisphere 1. If so, the recorded value is the diameter of the grooved raceway of the inner ring 16. If not, the recorded value is inaccurate because the arc of the grooved raceway of the inner ring 16 does not meet the requirements.

[0072] In this embodiment, the measuring instrument 14 is a dial indicator, and the top of the traditional dial indicator is replaced with the contact hemisphere 1 in this application, and the contact hemisphere 1 slides in the raceway; when adjusting the measuring instrument 14 for fine-tuning, since the standard value of the ruler bracket has been calibrated in advance, the value of the dial indicator jump is the deviation from the standard value of the raceway, and the diameter of the grooved raceway is calculated based on the deviation.

[0073] Specifically, such as Figure 6 and Figure 7 As shown, when the support block pair 12 is fitted to the top surface of the ring 17 of the grooved raceway, it can be adsorbed on the top surface of the ring 17 of the grooved raceway by the magnetic device 12.1, and the distance from the crossbeam to the top surface of the bearing ring 17 can be adjusted by bending at different angles through the hinge device 12.2. The ruler bracket 13 preferably adopts at least four, evenly spaced and arranged in the ring 17 of the grooved raceway. When the upper arc 2, lower arc 3 and eccentricity of the bearing grooved raceway change, the diameter of the adapted steel ball also changes, ensuring that any diameter contact hemisphere 1 is made by cutting half of the corresponding steel ball, and the screw 5 is universal, and a threaded hole is drilled on the contact hemisphere 1 for connection, so that this can ensure that the measuring device is suitable for measuring raceways of various diameters, increasing versatility. In particular, the present device is not provided with a leveling device. Under special circumstances, the screw 5 of the contact hemisphere 1 and the ruler bracket 13 are in contact with the grooved raceway at a certain angle, such as Figure 4 Figure 5 As shown, the contact points are still the first reference point 9 and the second reference point 10, which are at a 45° angle to the horizontal. The diameter is still the distance D between point 11 and the bottom point of the groove 4. Therefore, the device has the function of maintaining data without deviation under tilt. The powdered dye can be Sudan red.

[0074] Preferably, the measurement of the groove raceway arc radius includes the following steps:

[0075] like Figures 9 to 15 As shown, the light gap method is used for detection. The first arc of the raceway arc radius detection template is attached to the groove raceway arc. If the groove raceway arc and the first arc fit together without any gap, the groove raceway arc radius is the largest and is considered qualified. If the middle position between the groove raceway arc and the first arc is a gap, it proves that the groove raceway radius is between R5 and R6 and is considered qualified. If the groove raceway arc and the first arc have gaps on both sides, the groove raceway arc radius is too large and is considered unqualified.

[0076] When the first arc is used for detection, if the middle part of the raceway surface is uneven, the raceway is deflected or out of round, including the scraping edge, such as Figure 15 As shown;

[0077] Use the second arc of the raceway arc radius detection template to stick to the groove raceway arc. If the groove raceway arc and the second arc fit together without any gaps, the groove raceway arc radius is the smallest and is considered qualified. If gaps appear on both sides between the groove raceway arc and the second arc, it proves that the groove raceway radius is between R5 and R6 and is considered qualified. If gaps appear in the middle between the groove raceway arc and the second arc, the groove raceway arc radius is too small and is considered unqualified.

[0078] Preferably, the measurement of the eccentricity of the groove raceway profile comprises the following steps:

[0079] like Figures 17 to 22 As shown, the light gap method is used for detection, and the third arc of the raceway arc radius detection template is attached to the groove raceway arc. If the groove raceway arc and the third arc fit together without any gap, the groove raceway arc radius is the largest and it is judged to be qualified; if the middle position between the groove raceway arc and the third arc is a gap, it proves that the groove raceway radius is between R7 and R8 and it is judged to be qualified; if the groove raceway arc and the third arc are gapped on both sides, the groove raceway arc radius is too large and it is judged to be unqualified.

[0080] Use the fourth arc of the raceway arc radius detection template to stick to the groove raceway arc. If the groove raceway arc and the fourth arc fit together without any gaps, the groove raceway arc radius is the smallest and is considered qualified. If gaps appear on both sides between the groove raceway arc and the fourth arc, it proves that the groove raceway radius is between R7 and R8 and is considered qualified. If gaps appear in the middle between the groove raceway arc and the fourth arc, the groove raceway arc radius is too small and is considered unqualified.

[0081] Preferably, the chord length measurement of the groove raceway contact point includes the following steps:

[0082] The distance between the first reference point 9 and the second reference point 10 is the contact point chord length. Remove the contact hemisphere 1 from the support rod, evenly apply powdered dye on the spherical surface of the contact hemisphere 1, and then draw it across the grooved raceway. The powdered dye of the contact hemisphere 1 at the first reference point 9 and the second reference point 10 is stained on the grooved raceway. Fit the contact point chord length detection template to the grooved raceway. If the first groove and the second groove of the contact point chord length detection template are respectively located at the powdered dye of the first reference point 9 and the second reference point 10, the contact point chord length is qualified, otherwise the contact point chord length is unqualified.

[0083] Preferably, the grooved raceway position measurement comprises the following steps:

[0084] like Figure 24As shown, place the measuring ball 18 against the grooved raceway, adjust the position of the positioning baffle 20 so that it is against the top surface of the raceway ring 17, and use the depth gauge 19 to read the distance between the highest point of the measuring ball 18 and the top surface of the raceway ring 17. This distance plus the radius of the measuring ball 18 is the center distance of the grooved raceway.

[0085] If the contact point chord length detection sample is used for detection, the depth gauge 19 is used to detect the distance between the sample handle and the end face of the ring 17, plus (such as Figure 25 ) or minus (such as Figure 26 ) Half of the handle width is the raceway center distance.

[0086] The multi-parameter detection system of the peach-shaped groove raceway of the slewing bearing of the present invention can meet the measurement of multiple parameters such as the diameter, groove raceway arc radius, groove raceway arc eccentricity, groove raceway contact point chord length and groove raceway position of the slewing bearing peach-shaped groove raceway through a diameter detection component, a raceway arc radius detection template, a raceway arc eccentricity detection template, a contact point chord length detection template and a raceway position detection component. Moreover, each measuring tool is simple to use and convenient to measure, thereby solving the technical problem of complex parameter measurement operation of the groove raceway of the slewing bearing in the prior art. By utilizing the characteristics of the grooved raceway, the diameter detection component does not need to be leveled, saving the time of leveling operation; the diameter detection component can realize the measurement of grooved raceway diameters of multiple specifications by replacing the contact hemisphere 1, increasing the versatility of the device and reducing costs; the diameter detection component detects whether the contact is good by applying powdered dye at the contact point, and has the advantages of being cheap, easy to obtain and easy to operate; the diameter detection component is tightly attracted to the workpiece through a magnetic switch setting, and the magnetic device 12.1 has a hinge function and can be bent at different angles to adjust the distance to the bearing end face, ensuring no axial displacement and improving measurement accuracy; the device adjusts the contact hemisphere 1 through a dial indicator to achieve fine-tuning of radial displacement, can record data, and achieve accurate measurement of radial diameter.

[0087] The raceway arc radius detection template and the raceway arc eccentricity detection template are used. One end is a large-diameter arc and the other end is a small-diameter arc. The light gap method is used for detection. This test can be performed on a processing machine tool. The qualified or unqualified conclusion can be drawn directly by comparing the templates. It has the characteristics of being able to detect at the processing station and quickly obtain results. Based on the principle that the gaps on both sides of the arc are too large in radius, the gaps in the middle of the arc are small in radius, the same radius is considered for perfect contact, and the radius between the large-diameter arc and the small-diameter arc is considered qualified, the raceway arc radius, eccentricity, raceway center distance, and contact point chord length can be measured in a durable, convenient, fast, accurate, and economical manner. It is particularly suitable for enterprise production and detection use.

[0088] The foregoing description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Those skilled in the art will readily appreciate that various modifications and variations of the present invention are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present invention are intended to be within the scope of protection of the present invention.

Claims

1. A multi-parameter detection system for peach-shaped groove raceway of slewing bearing, characterized in that: The invention comprises a diameter detection component, wherein the diameter detection component comprises a pair of support blocks (12), a crossbeam, a pair of pipe ruler brackets (13), a measuring instrument (14) and a contact hemisphere (1); the pair of support blocks (12) is detachably mounted on the crossbeam, the pair of pipe ruler brackets (13) is detachably and movably mounted on the crossbeam; a support rod is provided on the pair of pipe ruler brackets (13), the contact hemisphere (1) is fixed to the first end of the support rod, and the measuring instrument (14) is detachably mounted on the crossbeam. The grooved raceway is mounted on the second end of the support rod; the radius of the upper arc (2) and the radius of the lower arc (3) are equal, the upper arc (2) of the grooved raceway is provided with a first reference point (9) in contact with the contact hemisphere (1), the lower arc (3) of the grooved raceway is provided with a second reference point (10) in contact with the contact hemisphere (1), and the lines connecting the first reference point (9) and the second reference point (10) and the center of the contact hemisphere (1) are respectively at an angle of 45 degrees to the horizontal line.

2. The multi-parameter detection system for peach-shaped groove raceway of slewing bearing according to claim 1 is characterized in that: It also includes a raceway arc radius detection template, wherein the raceway arc radius detection template is provided with a first arc and a second arc facing each other; Assuming that the radius of the contact hemisphere (1) is R3, the radius of the first arc is R5, and the radius of the second arc is R6, then R5=R3+0.05±0.01, R6=R3-0.05±0.

01.

3. The multi-parameter detection system for peach-shaped groove raceway of slewing bearing according to claim 1 is characterized in that: It also includes a raceway arc eccentricity detection template, wherein the raceway arc eccentricity detection template is provided with a third arc and a fourth arc facing back; Assume that the eccentricity between the centers of the first reference point (9) and the second reference point (10) is d, the eccentricity between the centers of the first reference point (9) and the second reference point (10) on the third arc is d1, the eccentricity between the centers of the first reference point (9) and the second reference point (10) on the fourth arc is d2, the radius of the third arc is R7, and the radius of the fourth arc is R8, then R7 = R3 + 0.05 ± 0.01, R8 = R3 - 0.05 ± 0.01, d1 = (d + 0.05) (0, -0.005), d2 = (d - 0.05) (+0.005, 0).

4. The multi-parameter detection system for peach-shaped groove raceway of slewing bearing according to claim 1 is characterized in that: It also includes a contact point chord length detection template, the contact point chord length detection template is provided with a semicircular arc, a first groove is provided on the semicircular arc plate corresponding to the first reference point (9), and a second groove is provided on the semicircular arc plate corresponding to the second reference point (10).

5. The multi-parameter detection system for peach-shaped groove raceway of slewing bearing according to claim 1 is characterized in that: The invention also includes a roller position detection assembly, which includes a measuring ball (18) and a depth gauge (19). A positioning baffle (20) is provided on the depth gauge (19). The measuring ball (18) is detachably mounted on the end of the depth gauge (19).

6. A detection method using the slewing bearing peach-shaped groove raceway multi-parameter detection system according to claim 1, characterized in that: The groove raceway diameter measurement includes the following steps: When measuring the grooved raceway of the outer ring (15), the pair of ruler brackets (13) are installed inside the pair of support blocks (12), and the support rods of the pair of ruler brackets (13) are arranged opposite to each other, and the contact hemisphere (1) is installed at the end of the support rod facing away from each other, and the measuring instrument (14) is installed at the end opposite to the support rod, and the installation height of the pair of ruler brackets (13) is calibrated by a length measuring machine; powder dye is applied at the positions of the first reference point (9) and the second reference point (10) in the grooved raceway; the pair of support blocks (12) are attached to the top surface of the ring (17) of the grooved raceway; the contact hemisphere (1) is adjusted to be attached to the grooved raceway, and the measuring instrument (14) is adjusted to perform fine adjustment and record the value; the pair of ruler brackets (13) is retracted to remove the contact hemisphere (1), and the surface of the contact hemisphere (1) is observed to see if there is powder dye. If there is, the recorded value is the diameter of the grooved raceway of the outer ring (15); if not, the recorded value is inaccurate. When measuring the grooved raceway of the inner ring (16), the pair of ruler brackets (13) are installed on the outside of the pair of support blocks (12), and the support rods of the pair of ruler brackets (13) are arranged relative to each other, and the contact hemisphere (1) is installed at the opposite end of the support rod, and the measuring instrument (14) is installed at the end opposite to the support rod, and the installation height of the pair of ruler brackets (13) is calibrated by a length measuring machine; powder dye is applied at the positions of the first reference point (9) and the second reference point (10) in the grooved raceway; the pair of support blocks (12) are attached to the top surface of the workpiece of the grooved raceway; the contact hemisphere (1) is adjusted to be attached to the grooved raceway, and the measuring instrument (14) is adjusted to perform fine adjustment and record the value; the pair of ruler brackets (13) is retracted to remove the contact hemisphere (1), and the surface of the contact hemisphere (1) is observed to see whether there is powder dye. If there is, the recorded value is the diameter of the grooved raceway of the inner ring (16); if not, the recorded value is inaccurate.

7. The multi-parameter detection method for peach-shaped groove raceway of slewing bearing according to claim 6, characterized in that: The measurement of the groove raceway arc radius includes the following steps: The light gap method is used for testing. The first arc of the raceway arc radius testing template is attached to the groove raceway arc. If there is no gap between the groove raceway arc and the first arc, the groove raceway arc radius is the largest and it is judged to be qualified. If there is a gap in the middle between the groove raceway arc and the first arc, it proves that the groove raceway radius is between R5 and R6 and it is judged to be qualified. If there is a gap on both sides between the groove raceway arc and the first arc, the groove raceway arc radius is too large and it is judged to be unqualified. Use the second arc of the raceway arc radius detection template to stick to the groove raceway arc. If the groove raceway arc and the second arc fit together without any gaps, the groove raceway arc radius is the smallest and is considered qualified. If gaps appear on both sides between the groove raceway arc and the second arc, it proves that the groove raceway radius is between R5 and R6 and is considered qualified. If gaps appear in the middle between the groove raceway arc and the second arc, the groove raceway arc radius is too small and is considered unqualified.

8. The multi-parameter detection method for peach-shaped groove raceway of slewing bearing according to claim 6, characterized in that: The eccentricity measurement of the groove raceway profile includes the following steps: The light gap method is used for testing. The third arc of the raceway arc radius testing template is attached to the groove raceway arc. If there is no gap between the groove raceway arc and the third arc, the groove raceway arc radius is the largest and it is judged to be qualified. If there is a gap in the middle between the groove raceway arc and the third arc, it proves that the groove raceway radius is between R7 and R8 and it is judged to be qualified. If there is a gap on both sides between the groove raceway arc and the third arc, the groove raceway arc radius is too large and it is judged to be unqualified. Use the fourth arc of the raceway arc radius detection template to stick to the groove raceway arc. If the groove raceway arc and the fourth arc fit together without any gaps, the groove raceway arc radius is the smallest and is considered qualified. If gaps appear on both sides between the groove raceway arc and the fourth arc, it proves that the groove raceway radius is between R7 and R8 and is considered qualified. If gaps appear in the middle between the groove raceway arc and the fourth arc, the groove raceway arc radius is too small and is considered unqualified.

9. The multi-parameter detection method for peach-shaped groove raceway of slewing bearing according to claim 6, characterized in that: The chord length measurement of the groove raceway contact point includes the following steps: The distance between the first reference point (9) and the second reference point (10) is the contact point chord length. The contact hemisphere (1) is removed from the support rod, and powdered dye is evenly applied to the spherical surface of the contact hemisphere (1). Then, the contact hemisphere (1) is scratched across the grooved raceway. The powdered dye at the first reference point (9) and the second reference point (10) of the contact hemisphere (1) is stained on the grooved raceway. The contact point chord length detection template is attached to the grooved raceway. If the first groove and the second groove of the contact point chord length detection template are respectively located at the powdered dye at the first reference point (9) and the second reference point (10), the contact point chord length is qualified. Otherwise, the contact point chord length is unqualified.

10. The multi-parameter detection method for peach-shaped groove raceway of slewing bearing according to claim 6, characterized in that: The groove raceway position measurement includes the following steps: The measuring ball (18) is placed in contact with the grooved raceway, and the position of the positioning baffle (20) is adjusted so that the positioning baffle (20) is in contact with the top surface of the ring (17) of the grooved raceway. The distance between the highest point of the measuring ball (18) and the top surface of the ring (17) of the grooved raceway is read using a depth gauge (19). The distance plus the radius of the measuring ball (18) is the center distance of the grooved raceway.

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