Measuring tool for RW series bearing outer ring raceway groove center distance
By designing a measurement tool for three-point adjustment mechanism and dial-meter clamp, the standard parts comparison can achieve rapid and accurate measurement of the center distance of the outer ring raceway of the RW series bearing, which solves the problems of efficiency and accuracy in the existing technology and improves the Productivity.
Patent Information
- Application Number
- CN202420887255.3
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-26
- Publication Date
- 2024-12-13
- Estimated Expiration
- 2034-04-26
AI Technical Summary
When measuring the center distance of the outer ring raceway of the RW series bearing, the detection accuracy is high but the efficiency is low, or the efficiency is high but the accuracy is low, making it difficult to achieve fast and convenient large-scale processing.
A measurement tool including a base assembly and a three-point adjustment mechanism is designed. By adjusting the contact between the lower elastic fulcrum seat and the probe and the raceway, the raceway spacing is measured using a dial-meter clamp, and the comparison of standard parts can be achieved quickly and accurately.
It realizes rapid and accurate measurement of the center distance of the outer ring raceway of the RW series bearing, improves production efficiency, and solves the problems of inaccurate and low efficiency of double raceway measurement.
Smart Images
Figure CN222165963U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of bearing measurement, in particular to a measuring tool for the center distance of a raceway groove of an outer ring of a RW series bearing. Background Art
[0002] As is known, the RW series bearing is a double-row cross cylindrical roller bearing, which uses double-row rollers and has the characteristics of high rigidity, high precision and compactness. Because there are two raceways, the groove center distance of the outer ring raceway has extremely high requirements. The general error is within 0.005mm, so how to quickly and conveniently detect the difference between the raceway groove center distances during raceway grinding becomes a difficult problem. Two methods are usually used for detection in the prior art. The first is to use a profiler to detect the groove center distance of the two raceways. Its characteristics are high detection accuracy, but the measurement efficiency of the profiler is low and cannot be achieved in large-scale processing. The second is to use a gasket equal to the groove center distance for measurement. Although this form of measurement has high detection efficiency, the error of the gasket is easily superimposed, resulting in low detection accuracy. Therefore, it has become a basic demand of technical personnel in this field to propose a measuring tool with high measurement accuracy, rapid detection, and large-scale processing. Summary of the invention
[0003] In order to overcome the deficiencies in the background technology, the utility model discloses a measuring tool for the groove center distance of the outer ring raceway of RW series bearings.
[0004] In order to achieve the above-mentioned purpose, the present invention adopts the following technical solutions:
[0005] A measuring tool for the center distance of the outer ring raceway of an RW series bearing comprises a base assembly and a three-point adjustment mechanism, wherein the three-point adjustment mechanism is fixed on a base plate, and the base assembly consists of a base plate vertically mounted on the base plate and universal wheels fixed on the four corners below the base plate;
[0006] A groove is opened downwardly in the middle of the top surface of the base plate, a vertical front T-shaped groove is opened on the front of the base plate and on both sides of the groove, a vertical rear T-shaped groove is opened on the rear of the base plate and on both sides of the groove, the front T-shaped groove and the rear T-shaped groove are not connected front to back, and an "eight"-shaped T-shaped groove is opened at the lower part of the groove and on both sides of the base plate;
[0007] The three-point adjustment mechanism includes a lower elastic fulcrum seat fixed on two T-shaped grooves, a fixing assembly fixed on the groove, a groove center distance measuring assembly and a position measuring assembly; elastic fulcrum probes are fixed on the two lower elastic fulcrum seats, and the elastic fulcrum probes are respectively in contact with the inner raceways on both sides of the lower part of the bearing to be measured;
[0008] The fixing assembly includes a front fixed fulcrum seat and a probe, the front fixed fulcrum seat is fixed to the upper part of the front T-shaped slot of the base plate by bolts, and the probe is fixed on the upper part of the front fixed fulcrum seat;
[0009] The groove center distance measuring assembly includes a front guide rail base, a rear guide rail base, a fulcrum seat, and a lower micrometer clamp. The front guide rail base is fixed to the lower part of the front T-slot of the base plate by bolts, and the rear guide rail base is fixed to the lower part of the rear T-slot of the base plate by bolts. Guide rails are fixed on the rear guide rail base and the front guide rail base, a fulcrum seat is fixed on the slider of the guide rail, a probe is fixed on the fulcrum seat, and the lower micrometer clamp is fixed to the upper part of the rear guide rail base. The pointer of the micrometer in the lower micrometer clamp hits the inner side of the fulcrum seat; the probe fixed on the front fixed fulcrum seat and the probe on the fulcrum seat are respectively located in the two raceways of the bearing to be measured;
[0010] The position measurement assembly includes a reverse micrometer base and an upper micrometer clamp. The reverse micrometer base is fixed to the upper portion of the T-slot behind the base plate by bolts. The upper micrometer clamp is fixed to the upper portion of the reverse micrometer base. The pointer of the micrometer in the upper micrometer clamp hits the end face of the bearing to be measured.
[0011] The measuring tool for the center distance of the outer ring raceway of the RW series bearing has multiple groups of horizontal long holes evenly spaced on the top of the base plate. Any group of horizontal long holes includes at least two holes that are horizontally spaced. Multiple mounting holes A on the bottom surface of the base plate are connected to the horizontal long holes on the base plate by bolts. Threaded holes are opened at the four corners of the top of the base plate, and the screws on the upper part of the universal wheel are connected to the threaded holes.
[0012] The measuring tooling for the groove center distance of the outer ring raceway of the RW series bearing has an L-shaped lower elastic fulcrum seat, and two connecting holes I are arranged at intervals on the horizontal surface of the lower elastic fulcrum seat. The lower elastic fulcrum seat is fixed to the "eight"-shaped T-slot by bolts in the connecting holes I respectively, and four connecting holes G arranged in a square are opened on the side surface of the vertical surface of the lower elastic fulcrum seat, and an opening is opened in the middle of the four connecting holes G. The probe of the elastic fulcrum probe passes through the opening in the middle to contact the raceway of the bearing to be measured, and the rear seat of the elastic fulcrum probe is fixed to the four connecting holes G on the vertical surface of the lower elastic fulcrum seat by bolts.
[0013] The measuring tool for the center distance of the outer ring raceway of the RW series bearing, the reverse guide rail base includes an integrally arranged rectangular parallelepiped and a vertical square body extending above the middle of the rectangular parallelepiped, connecting holes A are opened on both sides of the rectangular parallelepiped, the reverse guide rail base is fixed to the lower part of the rear T-slot by bolts in the connecting holes A, two vertical long holes A are arranged at intervals on the vertical square body, a thread hole A is opened in the lower part between the two vertical long holes A, the inner end of the guide rail is fixed on the upper side of the reverse guide rail base, and is fixedly connected to the guide rail by screws in the thread hole A.
[0014] The measuring tool for the outer ring raceway groove center distance of RW series bearings, the reverse micrometer base includes an integrally arranged rectangular parallelepiped and a vertical square body extending above the middle of the rectangular parallelepiped, connecting holes B are opened on both sides of the rectangular parallelepiped, the reverse micrometer base is fixed to the upper part of the rear T-slot by bolts in the connecting holes B, two vertical long holes B are arranged at intervals on the vertical square body, and the upper micrometer clamp is fixed on the two vertical long holes A.
[0015] The measuring tool for the outer ring raceway groove center distance of the RW series bearing, the front fixed fulcrum seat includes an integrally arranged rectangular parallelepiped and an extension section on the middle of the rectangular parallelepiped, connecting holes C are opened on both sides of the rectangular parallelepiped, and connecting holes B are opened on the extension section. The extension section of the front fixed fulcrum seat is arranged toward the outer end of the guide rail, and a probe is fixed in its connecting hole B.
[0016] The measuring tool for the center distance of the outer ring raceway of the RW series bearings, the front guide rail base includes an integrally arranged rectangular block and a square body on the middle of the rectangular block, connecting holes K are opened on both sides of the rectangular block, the square body of the front guide rail base is arranged toward the inner end of the guide rail, and the guide rail is fixed on the top of the front guide rail base through the screws in the thread hole C42.
[0017] The measuring tool for the center distance of the outer ring raceway of the RW series bearing has steps on the top and bottom of the fulcrum seat. The lower step is set on the slider of the guide rail, and the upper step surface is provided with multiple connecting holes D, which are fixedly connected to the guide rail through bolts in the connecting holes D.
[0018] The measuring fixture of the groove center distance of the outer ring raceway of the RW series bearing has a through hole in the middle of the upper micrometer clamp and the lower micrometer clamp, and a through slot connected to the through hole on the top, and the through slot divides the top of the lower micrometer clamp into two side plates, and the two side plates are correspondingly provided with connecting holes E; the bottom surface of the upper micrometer clamp is set as a plane, and a plurality of connecting holes G are provided on the plane, and the bolts in the connecting holes G are fixedly connected to the vertical long holes B on the reverse micrometer base; a recessed groove is provided in the middle of the bottom surface of the lower micrometer clamp, and the inner end of the guide rail passes through the recessed groove, and bolts are provided in the connecting holes F on the two side surfaces of the bottom surface of the lower micrometer clamp, and the bolts in the connecting holes F of the lower micrometer clamp are fixedly connected to the vertical long holes A of the reverse guide rail base.
[0019] Due to the adoption of the above technical solution, the utility model has the following beneficial effects:
[0020] The measuring jig for the groove center distance of the outer ring raceway of the RW series bearing described in the utility model adjusts the three-point adjustment mechanism and adjusts the two lower elastic fulcrum seats to the same height to support the standard bearing, so that the two probes on the three-point adjustment mechanism are respectively in contact with the two raceways of the standard bearing, the pointer of the upper micrometer hits the end face of the standard bearing, and the pointer of the lower micrometer hits the front end face of the fulcrum seat. After the standard parts are used for alignment, they are removed, and the bearings to be measured that are subsequently processed in batches are placed on the measuring jig in turn, and the errors of the standard parts and the bearings to be measured that are processed in batches are compared, so as to achieve the purpose of rapid measurement. The utility model has a simple structure and is easy to use, solves the problems of inaccurate and low efficiency in measuring the double raceways of the outer rings of the RW series bearings, and greatly improves production efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0021] Figure 1 It is a schematic diagram of the use structure of the utility model.
[0022] Figure 2 The utility model is a schematic diagram of the installation structure of the fixing component, the groove center distance measuring component and the position measuring component.
[0023] Figure 3 It is a front structural schematic diagram of the substrate of the utility model.
[0024] Figure 4 It is a schematic diagram of the reverse structure of the substrate of the utility model.
[0025] Figure 5 It is a structural schematic diagram of the reverse guide rail base of the utility model.
[0026] Figure 6 It is a structural schematic diagram of the reverse micrometer base of the utility model.
[0027] Figure 7 It is a structural schematic diagram of the front fixed fulcrum seat of the utility model.
[0028] Figure 8 It is a structural schematic diagram of the fulcrum seat of the utility model.
[0029] Fig. 9 The utility model is a schematic structural diagram of a lower micrometer clamp.
[0030] Fig.10 The utility model is a structural schematic diagram of a micrometer clamp.
[0031] Fig.11 It is a structural schematic diagram of the lower elastic fulcrum seat of the utility model.
[0032] Fig.12 It is a structural schematic diagram of the bottom plate of the utility model.
[0033] Fig.13 It is a structural schematic diagram of the front guide rail base of the utility model.
[0034] In the figure: In the figure: 1. Bearing to be tested; 2. Base plate; 3. Lower elastic fulcrum seat; 4. Universal wheel; 5. Bottom plate; 6. Rear guide rail base; 7. Front guide rail base; 8. Rear dial gauge base; 9. Fulcrum seat; 10. Guide rail; 11. Probe; 12. Upper dial gauge clamp; 13. Dial gauge; 14. Lower dial gauge clamp; 15. Front fixed fulcrum seat; 16. Front T-slot; 17. Groove; 18. T-slot; 19. Mounting hole A; 20. Rear T-slot ; 21. Wire hole A; 22. Connection hole A; 23. Vertical long hole A; 24. Vertical long hole B; 25. Connection hole B; 26. Mounting hole B; 27. Connection hole C; 28. Mounting hole C; 29. Connection hole D; 30. Wire hole B; 31. Through hole; 32. Through groove; 33. Connection hole E; 34. Recessed groove; 35. Connection hole F; 36. Connection hole G; 37. Connection hole H; 38. Connection hole I; 39. Connection hole J; 40. Horizontal long hole. DETAILED DESCRIPTION
[0035] The present invention can be explained in detail through the following embodiments. The purpose of disclosing the present invention is to protect all technical improvements within the scope of the present invention.
[0036] Combined with Figure 1-13 The measuring tool for the center distance of the raceway groove of the outer ring of the RW series bearing comprises a base assembly and a three-point adjustment mechanism, the three-point adjustment mechanism is fixed on the base plate 2, the base assembly consists of the base plate 2 vertically mounted on the bottom plate 5 and the universal wheel 4 fixed on the four corners below the bottom plate 5; a plurality of groups of horizontal long holes 40 are evenly spaced on the top of the bottom plate 5, any group of horizontal long holes 40 includes at least two and are spaced horizontally, a plurality of mounting holes A19 on the bottom surface of the base plate 2 are connected to the horizontal long holes 40 on the bottom plate 5 by bolts, threaded holes are opened on the four corners above the bottom plate 5, and the screws on the upper part of the universal wheel 4 are all connected to the threaded holes; The universal wheel 4 is used to drive the bottom plate 5 and the base 2 and the three-point adjustment mechanism on the top of the bottom plate 5 to move a certain distance. The base 2 is fixed on the horizontal long hole 40 on the bottom plate 5, and the horizontal long hole 40 is provided for adjusting the installation position. A groove 17 is provided downwardly in the middle of the top surface of the base plate 2, and vertical front T-shaped grooves 16 are provided on the front of the base plate 2 and on both sides of the groove 17. Vertical rear T-shaped grooves 20 are provided on the back of the base plate 2 and on both sides of the groove 17. The front T-shaped grooves 16 and the rear T-shaped grooves 20 are not connected front to back. "Eight"-shaped T-shaped grooves 18 are provided at the lower part of the groove 17 and on both sides of the base plate 2.
[0037] The three-point adjustment mechanism includes a lower elastic fulcrum seat 3 fixed on two T-slots 18 and a fixing assembly, a groove center distance measuring assembly and a position measuring assembly fixed on the groove 17; elastic fulcrum probes are fixed on the two lower elastic fulcrum seats 3, and the elastic fulcrum probes are respectively in contact with the inner raceways on both sides of the lower part of the bearing 1 to be measured; the fixing assembly includes a front fixed fulcrum seat 15 and a probe 11, the front fixed fulcrum seat 15 is fixed to the upper part of the front T-slot 16 of the base plate 2 by bolts, and the probe 11 is fixed to the front fixed fulcrum seat 15. The top of the fixed fulcrum seat 15; the groove center distance measuring assembly includes a front guide rail base 7, a reverse guide rail base 6, a fulcrum seat 9, and a lower micrometer clamp 14. The front guide rail base 7 is fixed to the lower part of the front T-shaped groove 16 of the base plate 2 by bolts, and the reverse guide rail base 6 is fixed to the lower part of the rear T-shaped groove 20 of the base plate 2 by bolts. A guide rail 10 is fixed on the reverse guide rail base 6 and the front guide rail base 7, and a fulcrum seat 9 is fixed on the slider of the guide rail 10. A probe 11 is fixed on the fulcrum seat 9, and a lower micrometer clamp 14 is fixed. The pointer of the micrometer 13 in the lower micrometer clamp 14 fixed on the upper part of the reverse guide rail base 6 is hit on the inner side of the fulcrum seat 9; the probe 11 fixed on the front fixed fulcrum seat 15 and the probe 11 on the fulcrum seat 9 are respectively located in the two raceways of the bearing 1 to be measured; the front T-slot 16 and the rear T-slot 20 are provided for the fixed positions of the front guide rail base 7, the front fixed fulcrum seat 15, the reverse guide rail base 6, and the reverse micrometer base 8; the position measurement assembly includes the reverse micrometer base 8 and the upper micrometer clamp 12, and the reverse micrometer base 8 is fixed to the rear T-slot 20 of the base plate 2 by bolts The upper part of the micrometer clamp 12 is fixed on the upper part of the micrometer base 8 on the reverse side, and the pointer of the micrometer 13 in the micrometer clamp 12 hits the end face of the bearing 1 to be tested; the three-point adjustment mechanism is used to support the bearing 1 to be tested, and the two lower elastic fulcrum seats 3 are adjusted to the same height position, so that the two elastic fulcrum probes are in contact with the lower sides of the raceway of the bearing 1 to be tested, and the front guide rail base 7, the front fixed fulcrum seat 15, the reverse guide rail base 6, and the reverse micrometer base 8 are respectively installed on the front T-slot 16 and the rear T-slot 15, so as to adjust the two probes 11 to be located in the two raceways of the bearing 1 to be tested;
[0038] Specifically, the lower elastic fulcrum seats 3 are all L-shaped, and two connecting holes I38 are arranged at intervals on the horizontal surface of the lower elastic fulcrum seats 3. The lower elastic fulcrum seats 3 are fixed to the "eight"-shaped T-slot 18 by bolts in the connecting holes I38 respectively, and four connecting holes G32 arranged in a square are opened on the side surface of the vertical surface of the lower elastic fulcrum seat 3, and an opening is opened in the middle of the four connecting holes G32. The probe of the elastic fulcrum probe passes through the opening in the middle to contact the raceway of the bearing 1 to be tested, and the rear seat of the elastic fulcrum probe is fixed to the four connecting holes G32 on the vertical surface of the lower elastic fulcrum seat 3 by bolts.
[0039] Specifically, the reverse guide rail base 6 includes an integrally arranged rectangular parallelepiped and a vertical square body extending above the middle of the rectangular parallelepiped, connecting holes A22 are provided on both sides of the rectangular parallelepiped, the reverse guide rail base 6 is fixed to the lower portion of the rear T-shaped slot 20 by bolts in the connecting holes A22, two vertical long holes A23 are provided at intervals on the vertical square body, a thread hole A21 is provided at the lower portion between the two vertical long holes A23, the inner end of the guide rail 10 is fixed on the upper portion of the reverse guide rail base 6, and is fixedly connected to the guide rail 10 by screws in the thread hole A21.
[0040] Specifically, the reverse micrometer base 8 includes an integrally arranged rectangular body and a vertical square body extending above the middle part of the rectangular body. Connecting holes B25 are provided on both sides of the rectangular body. The reverse micrometer base 8 is fixed to the upper part of the rear T-shaped slot 20 by bolts in the connecting holes B25. Two vertical long holes B24 are provided at intervals on the vertical square body, and the upper micrometer clamp 12 is fixed on the two vertical long holes A23.
[0041] Specifically, the front fixed fulcrum seat 15 includes an integrally arranged rectangular body and an extension section on the middle of the rectangular body. Connecting holes C27 are provided on both sides of the rectangular body, and a connecting hole B26 is provided on the extension section. The extension section of the front fixed fulcrum seat 15 is arranged toward the outer end of the guide rail 10, and a probe 11 is fixed in its connecting hole B26.
[0042] Specifically, the front guide rail base 7 includes an integrally arranged rectangular body and a square body on the middle of the rectangular body. Connection holes K41 are opened on both sides of the rectangular body. The square body of the front guide rail base 7 is arranged toward the inner end of the guide rail 10, and the guide rail 10 is fixed to the top of the front guide rail base 7 by screws in the thread hole C42.
[0043] Specifically, steps are provided on the top and bottom of the fulcrum seat 9. The lower step is arranged on the slider of the guide rail 10. The upper step surface is provided with a plurality of connection holes D29, which are fixedly connected to the guide rail 10 through bolts in the connection holes D29.
[0044] Specifically, a through hole 31 is provided in the middle of the upper micrometer clamp 12 and the lower micrometer clamp 14, and a through groove 32 connected to the through hole 31 is provided on the top. The through groove 32 divides the top of the lower micrometer clamp 14 into two side plates, and connecting holes E33 are correspondingly provided on the two side plates; the bottom surface of the upper micrometer clamp 12 is set as a plane, and a plurality of connecting holes G36 are provided on the plane. The bolts in the connecting holes G36 are fixedly connected to the vertical long holes B24 on the reverse micrometer base 8; a recessed groove 34 is provided in the middle of the bottom surface of the lower micrometer clamp 14, the inner end of the guide rail 10 passes through the recessed groove 34, and bolts are provided in the connecting holes F35 on the two side surfaces of the bottom surface of the lower micrometer clamp 14, and the bolts in the connecting holes F35 of the lower micrometer clamp 14 are fixedly connected to the vertical long holes A23 of the reverse guide rail base 6.
[0045] The measuring tooling for the outer ring raceway groove center distance of the RW series bearing described in the utility model is implemented. During installation, the base plate 2 is placed on the bottom plate 5, and is fixedly connected to the multiple horizontal long holes 40 on the bottom plate 5 by bolts in multiple mounting holes A19. The three-point adjustment mechanism is adjusted according to the inner diameter of the bearing 1 to be measured, and the front fixed fulcrum seat 15 and the front guide rail base 7 are fixed on the front T-slot 16 at intervals up and down, and the reverse micrometer base 8 and the reverse guide rail base 6 are fixed on the rear T-slot 20 at intervals up and down. The front ends of the guide rails 10 are respectively fixed on the reverse guide rail base 6 and the front guide rail base 7. The lower micrometer clamp 14 is clamped on the outside of the guide rail 10 through the recessed groove 34, and the bottom surface is fixedly connected to the vertical long hole A23 on the reverse guide rail base 6 by bolts in the connecting hole F35. The micrometer 13 is installed in the through hole 31 of the clamp 14 and is locked by the bolt in the connecting hole E33 on the lower micrometer clamp 14; the bolt in the connecting hole G36 of the upper micrometer clamp 12 is fixedly connected with the vertical long hole B on the reverse micrometer base 8, so that the upper micrometer clamp 12 is fixed on the reverse micrometer base 8, and the micrometer 13 is installed in the through hole 31 of the upper micrometer clamp 12 and is locked by the bolt in the connecting hole E33 on the upper micrometer clamp 12; the two lower elastic fulcrum seats 3 respectively fix the elastic fulcrum probes, and the two lower elastic fulcrum seats 3 are fixed at the same height on the "eight"-shaped T-slot 18, and the probe 11 fixed on the front fixed fulcrum seat 15, the probe 11 on the upper fulcrum seat 9 of the slide block of the guide rail 10, and the elastic fulcrum probes of the two lower elastic fulcrum seats 3 respectively support the bearing 1 to be tested;
[0046] The bearing to be tested at this time is a standard part. When using it, rotate the standard part 2-3 times in the clockwise direction to ensure that the measuring tool is adjusted firmly. Then, according to the inner diameter size of the bearing, adjust the height of the front fixed fulcrum seat 15, the front guide rail base 7, the rear guide rail base 6 and the position of the fulcrum seat 9 on the slider, so that the probe 11 fixed on the front fixed fulcrum seat 15 and the probe 11 fixed on the fulcrum seat 9 are respectively pressed against the two raceways on the upper part of the bearing 1 to be tested, and adjust the elastic fulcrum probes on the two lower elastic fulcrum seats 3 to be pressed against the two raceways on both sides of the lower part of the bearing 1 to be tested. , so as to achieve the purpose of contact between each probe 11 and the elastic fulcrum probe and the raceway of the standard part; loosen the upper micrometer clamp 12 of the micrometer 13, adjust it to the point where the needle of the upper micrometer 13 contacts the end face of the standard part, and the needle of the lower micrometer 13 contacts the front end face of the fulcrum seat 9. After the standard parts are used for alignment, normal measurement can be performed and the measurement results are recorded; after the measurement is completed, the standard parts are removed, and the bearings to be tested that are subsequently processed in batches are placed on the measuring fixture in turn, and the errors between the standard parts and the bearings to be tested that are processed in batches are compared. The measurement has high accuracy and fast speed, which effectively improves the production efficiency.
[0047] The parts not described in detail in this utility model are prior art.
Claims
1. A measuring tool for the center distance of the outer ring raceway of an RW series bearing, comprising a base assembly and a three-point adjustment mechanism, characterized in that: The three-point adjustment mechanism is fixed on the base plate, and the base assembly is composed of a base plate vertically mounted on the base plate and universal wheels fixed on the four corners below the base plate; A groove is provided downwardly in the middle of the top surface of the base plate, a vertical front T-shaped groove is provided on the front of the base plate and on both sides of the groove, a vertical rear T-shaped groove is provided on the rear of the base plate and on both sides of the groove, the front T-shaped groove and the rear T-shaped groove are not connected front to back, and an "eight"-shaped T-shaped groove is provided at the lower part of the groove and on both sides of the base plate; The three-point adjustment mechanism includes a lower elastic fulcrum seat fixed on two T-shaped grooves, a fixing assembly fixed on the groove, a groove center distance measuring assembly and a position measuring assembly; elastic fulcrum probes are fixed on the two lower elastic fulcrum seats, and the elastic fulcrum probes are respectively in contact with the inner raceways on both sides of the lower part of the bearing to be measured; The fixing assembly includes a front fixed fulcrum seat and a probe, the front fixed fulcrum seat is fixed to the upper part of the front T-shaped slot of the base plate by bolts, and the probe is fixed on the upper part of the front fixed fulcrum seat; The groove center distance measuring assembly includes a front guide rail base, a rear guide rail base, a fulcrum seat, and a lower micrometer clamp. The front guide rail base is fixed to the lower part of the front T-slot of the base plate by bolts, and the rear guide rail base is fixed to the lower part of the rear T-slot of the base plate by bolts. Guide rails are fixed on the rear guide rail base and the front guide rail base, a fulcrum seat is fixed on the slider of the guide rail, a probe is fixed on the fulcrum seat, and the lower micrometer clamp is fixed to the upper part of the rear guide rail base. The pointer of the micrometer in the lower micrometer clamp hits the inner side of the fulcrum seat; the probe fixed on the front fixed fulcrum seat and the probe on the fulcrum seat are respectively located in the two raceways of the bearing to be measured; The position measurement assembly includes a reverse micrometer base and an upper micrometer clamp. The reverse micrometer base is fixed to the upper portion of the T-slot behind the base plate by bolts. The upper micrometer clamp is fixed to the upper portion of the reverse micrometer base. The pointer of the micrometer in the upper micrometer clamp hits the end face of the bearing to be measured.
2. The measuring tool for the center distance of the outer ring raceway of the RW series bearing according to claim 1 is characterized by: A plurality of groups of horizontal long holes are evenly spaced on the top of the bottom plate, and any group of horizontal long holes includes at least two holes that are horizontally spaced. A plurality of mounting holes A on the bottom surface of the base plate are connected to the horizontal long holes on the bottom plate by bolts. Threaded holes are provided at the four corners of the top of the bottom plate, and the screws on the upper part of the universal wheel are all connected to the threaded holes.
3. The measuring tool for the outer ring raceway groove center distance of the RW series bearing according to claim 1 is characterized by: The lower elastic fulcrum seats are all L-shaped, and two connecting holes I are arranged at intervals on the horizontal surface of the lower elastic fulcrum seat. The lower elastic fulcrum seats are fixed on the "eight"-shaped T-shaped grooves by bolts in the connecting holes I respectively, and four connecting holes G arranged in a square are opened on the side surface of the vertical surface of the lower elastic fulcrum seat, and an opening is opened in the middle of the four connecting holes G. The probe of the elastic fulcrum probe passes through the opening in the middle to contact the raceway of the bearing to be tested, and the rear seat of the elastic fulcrum probe is fixed to the four connecting holes G on the vertical surface of the lower elastic fulcrum seat by bolts.
4. The measuring tool for the center distance of the outer ring raceway of the RW series bearing according to claim 1 is characterized by: The reverse guide rail base includes an integrally arranged rectangular parallelepiped and a vertical square body extending above the middle of the rectangular parallelepiped. Connecting holes A are provided on both sides of the rectangular parallelepiped. The reverse guide rail base is fixed to the lower part of the rear T-shaped slot by bolts in the connecting holes A. Two vertical long holes A are provided at intervals on the vertical square body. A thread hole A is provided at the lower part between the two vertical long holes A. The inner end of the guide rail is fixed on the upper part of the reverse guide rail base and is fixedly connected to the guide rail by screws in the thread hole A.
5. The measuring tool for the center distance of the outer ring raceway of the RW series bearing according to claim 1 is characterized by: The reverse micrometer base includes an integrally arranged rectangular parallelepiped and a vertical square body extending above the middle of the rectangular parallelepiped. Connecting holes B are provided on both sides of the rectangular parallelepiped. The reverse micrometer base is fixed to the upper part of the rear T-slot by bolts in the connecting holes B. Two vertical long holes B are provided at intervals on the vertical square body, and the upper micrometer clamp is fixed above the two vertical long holes A.
6. The measuring tool for the center distance of the outer ring raceway of the RW series bearing according to claim 1 is characterized by: The front fixed fulcrum seat includes an integrally arranged rectangular body and an extension section on the middle part of the rectangular body. Connecting holes C are provided on both sides of the rectangular body, and a connecting hole B is provided on the extension section. The extension section of the front fixed fulcrum seat is arranged toward the outer end of the guide rail, and a probe is fixed in its connecting hole B.
7. The measuring tool for the center distance of the outer ring raceway of the RW series bearing according to claim 1 is characterized by: The front guide rail base includes an integrally arranged rectangular body and a square body on the middle part of the rectangular body. Connection holes K are opened on both sides of the rectangular body. The square body of the front guide rail base is arranged toward the inner end of the guide rail, and the guide rail is fixed to the top of the front guide rail base through screws in the thread hole C42.
8. The measuring tool for the center distance of the outer ring raceway of the RW series bearing according to claim 1 is characterized by: The fulcrum seat is provided with steps on the top and bottom. The lower step is arranged on the slider of the guide rail. The upper step surface is provided with a plurality of connection holes D, which are fixedly connected with the guide rail through bolts in the connection holes D.
9. The measuring tool for the center distance of the outer ring raceway of the RW series bearing according to claim 1 is characterized by: A through hole is provided in the middle of the upper micrometer clamp and the lower micrometer clamp, and a through groove connected to the through hole is provided on the top. The through groove divides the top of the lower micrometer clamp into two side plates, and connecting holes E are provided on the two side plates accordingly; the bottom surface of the upper micrometer clamp is set as a plane, and a plurality of connecting holes G are provided on the plane, and the bolts in the connecting holes G are fixedly connected to the vertical long holes B on the reverse micrometer base; a recessed groove is provided in the middle of the bottom surface of the lower micrometer clamp, and the inner end of the guide rail passes through the recessed groove, and bolts are provided in the connecting holes F on both side surfaces of the bottom surface of the lower micrometer clamp, and the bolts in the connecting holes F of the lower micrometer clamp are fixedly connected to the vertical long holes A of the reverse guide rail base.