CN110779426A - Bearing roundness and concentricity measuring device - Google Patents
Bearing roundness and concentricity measuring device Download PDFInfo
- Publication number
- CN110779426A CN110779426A CN201911156527.2A CN201911156527A CN110779426A CN 110779426 A CN110779426 A CN 110779426A CN 201911156527 A CN201911156527 A CN 201911156527A CN 110779426 A CN110779426 A CN 110779426A
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- Prior art keywords
- bearing
- measuring
- base
- concentricity
- roundness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/20—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures
- G01B5/201—Measuring arrangements characterised by the use of mechanical techniques for measuring contours or curvatures for measuring roundness
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- A Measuring Device Byusing Mechanical Method (AREA)
- Length Measuring Devices With Unspecified Measuring Means (AREA)
Abstract
The invention relates to a bearing roundness and concentricity measuring device which comprises a base, wherein a chuck used for clamping a bearing is rotatably arranged on the base, measuring devices are movably arranged on two sides of the base, and a lifting mechanism is arranged on the base opposite to the chuck and used for supporting the bearing. The device can simultaneously measure the numerical values of roundness and concentricity, can detect bearings of different types, and has high measurement precision; the device has simple structure, is popular and easy to understand, is convenient to operate, can be placed in a field for measurement operation, and ensures that the measured data and the calculated data can be butted in real time.
Description
Technical Field
The invention relates to the technical field of measurement, in particular to a device for measuring roundness and concentricity of a bearing.
Background
The roundness and the concentricity of the bearing have great influence on the state of the bearing during normal working, the out-of-tolerance of the roundness enables the part matched with the roundness to have a gap, thereby increasing the stress of the contact surface of the bearing, reducing the service life of the bearing, and the out-of-tolerance of the concentricity enables the bearing to have larger rotation error, thereby influencing the precision of the whole mechanical system. There are many methods and devices for roundness and concentricity measurement, but all are single measurements, and the accuracy of the measurement is directly related to the measurement device chosen. In addition, the conventional manual measurement is adopted for the measurement of the two types of the measurement, so that great human errors are easy to generate, the efficiency is low, and the measurement is performed by a large-scale sensing technology. The invention provides a bearing roundness and concentricity measuring device which can simultaneously measure roundness and concentricity of a part, can measure inner and outer tracks, and is convenient for later calculation to carry out data comparison, so that more accurate roundness and concentricity values can be obtained, human errors can be reduced, the measuring efficiency is improved, and the requirements of actual industrial production can be well met.
Disclosure of Invention
The invention provides a bearing roundness and concentricity measuring device for measuring the roundness and concentricity of a bearing, which comprises a base and a supporting mechanism, wherein a chuck for clamping the bearing is rotatably arranged on the base, one end of the supporting mechanism is movably arranged on the base, the other end of the supporting mechanism is provided with a first measuring head for detecting the roundness, a second measuring head for measuring the concentricity and a digital display meter for displaying detection data, a lifting mechanism is arranged on the base at a position opposite to the chuck, and the lifting mechanism is used for propping against the bearing.
Preferably, the lifting mechanism comprises a motor fixed on the base and a lead screw connected with a rotating shaft of the motor, the other end of the screw rod is fixed in a bearing seat, the bearing seat is fixed on the base, two sections of threads with opposite rotation directions are arranged on the screw rod, the screw rod is also provided with two moving pairs, the moving pairs are arranged on the base in a sliding manner, threaded holes I with consistent thread turning directions are formed in the moving pairs, the two moving pairs are respectively in threaded connection with two ends of the screw rod through the threaded holes I, two ends of the moving pair are hinged with connecting rods, the connecting rods on the two moving pairs are arranged in opposite directions, the connecting rod is hinged with the top plate, an oil cylinder is fixed on the top plate, a piston of the oil cylinder is connected with a fastening block used for propping against the bearing inner ring, and the size of the fastening block corresponds to that of the bearing inner ring. The lead screw rotates, the sliding pair moves relatively or in the opposite direction, and the top plate ascends and descends under the transmission action of the connecting rod, so that the fixation of bearings with different sizes is met.
Furthermore, the material of fastening block is 45# steel, be equipped with heating device in the fastening block. Thereby heating device makes the tight piece expand and open and reach the effect of tight piece and bearing inner race interference.
Preferably, the supporting mechanism comprises a sliding block arranged on the base in a sliding mode, the sliding block is fixedly connected with the installation rod, two clamping buckles are movably arranged on the installation rod and are respectively rotatably provided with a first measuring rod and a second measuring rod, the first measuring head and the digital display meter are fixedly arranged on the first measuring rod, and the second measuring head is fixedly arranged on the second measuring rod.
Further, the clip comprises a clamping part and an installation part, wherein the installation part is provided with an installation groove, the clip passes through the installation groove and is movably arranged on the installation rod, the clamping part is provided with a clamping hole, a clamping rod is fixedly arranged in the clamping hole, the clamping rod is provided with a positioning hole, and the first measuring rod and the second measuring rod are movably arranged on the two positioning holes of the clip respectively. Be equipped with the screw thread on the supporting rod, the supporting rod passes through the nut to be fixed in the centre gripping hole, and the supporting rod can rotate in the centre gripping hole to realize the rotation of measuring stick, the buckle can reciprocate on the installation pole, also can the left and right sides rotate, after confirming the position, locks through supporting rod and nut at last and fixes.
Preferably, the slider is provided with a protrusion, the base is provided with a sliding groove, the sliding groove is internally provided with a groove, and the protrusion is slidably arranged in the groove.
Further, a mounting rack is fixed on the second measuring rod, a sliding rod is sleeved on the upper portion and the lower portion of the mounting rack, and the second measuring head is arranged at one end, far away from the mounting rack, of the sliding rod. The second measuring head is used for measuring concentricity, and the fixed rod can rotate and move up and down on the installation rod, so that the measurement of bearings with different sizes is met.
Preferably, the slide bar is provided with a second threaded hole, the position of the second threaded hole corresponds to the position of the mounting frame, and a locking screw is arranged in the second threaded hole and used for locking the slide bar on the mounting frame. According to the size of the bearing to be measured, the sliding rod is pulled upwards or downwards to be adjusted to a required position, and then the locking screw is screwed down to complete fixing.
Has the advantages that: the device can simultaneously measure the numerical values of roundness and concentricity, can detect bearings of different types, and has high measurement precision; the device has simple structure, is popular and easy to understand, is convenient to operate, can be placed in a field for measurement operation, and ensures that the measured data and the calculated data can be butted in real time.
Drawings
FIG. 1 is a schematic view of the overall structure of the present invention;
FIG. 2 is a schematic view of the assembly of the fastening block of the present invention against the inner race of the bearing;
FIG. 3 is an enlarged view of FIG. 2;
FIG. 4 is a schematic view of a lead screw of the present invention;
FIG. 5 is a schematic view of a lifting mechanism of the present invention;
FIG. 6 is a schematic view of the slide bar and mounting bracket installation of the present invention;
FIG. 7 is a schematic view of a clip according to the present invention;
1. a base; 2. a chuck; 3. a bearing; 4. a first measuring head; 5. a digital display meter; 6. a slider; 7. mounting a rod; 8. clamping and buckling; 9. a first measuring rod; 10. a second measuring rod; 11. a top plate; 12. A motor; 13. an oil cylinder; 14. a fastening block; 15. a chute; 16. a second measuring head; 17. a slide bar; 18. a sliding pair; 19. a lead screw; 20. a connecting rod; 21. a groove; 22. a mounting frame; 23. A bearing seat; 24. a first threaded hole; 25. a protrusion; 26. positioning holes; 27. locking the screw; 28. A second threaded hole; 29. a clamping rod; 30. mounting grooves; .
Detailed Description
The utility model provides a bearing circularity and concentricity measuring device, includes base 1 and supporting mechanism, it is equipped with the chuck 2 that is used for centre gripping bearing 3 to rotate on the base 1, supporting mechanism one end activity sets up on the base 1, the other end is equipped with the first measuring head 4 that is used for detecting the circularity, is used for measuring the second measuring head 16 of concentricity and shows digital display table 5 that detects data, on the base 1 with the position that chuck 2 is relative is equipped with hoist mechanism, hoist mechanism is used for withstanding bearing 3.
The lifting mechanism comprises a motor 12 fixed on the base 1 and a lead screw 19 connected with the motor 12 in a rotating manner, the other end of the lead screw 19 is fixed in a bearing seat 23, the bearing seat 23 is fixed on the base 1, two threads with opposite screwing directions are arranged on the lead screw 19, two sliding pairs 18 are further arranged on the lead screw 19, the sliding pairs 18 are arranged on the base 1 in a sliding manner, threaded holes I24 with consistent screwing directions are formed in the sliding pairs 18, the two sliding pairs 18 are respectively in threaded connection with the two ends of the lead screw 19 through the threaded holes I24, connecting rods 20 are hinged to the two ends of the sliding pairs 18, the connecting rods 20 on the two sliding pairs 18 are arranged in opposite directions, the connecting rods 20 are hinged to the top plate 11, an oil cylinder 13 is fixed on the top plate 11, and a piston of the oil cylinder 13 is connected with a fastening block 14 for propping the inner ring of the bearing 3, the fastening blocks 14 have a size corresponding to the size of the inner ring of the bearing 3. The fastening block 14 is made of 45# steel, and a heating device is arranged in the fastening block 14.
The supporting mechanism comprises a sliding block 6 arranged on the base 1 in a sliding mode, the sliding block 6 is fixedly connected with an installation rod 7, two buckles 8 are movably arranged on the installation rod 7, the two buckles 8 are respectively and rotatably provided with a first measuring rod 9 and a second measuring rod 10, the first measuring head 4 and the digital display 5 are fixedly arranged on the first measuring rod 9, and the second measuring head 16 is fixedly arranged on the second measuring rod 10.
The clip 8 comprises a clamping part and an installation part, the installation part is provided with an installation groove 30, the clip 8 passes through the installation groove 30 and is movably arranged on the installation rod 7, the clamping part is provided with a clamping hole, a clamping rod 29 is fixedly arranged in the clamping hole, the clamping rod 29 is provided with a positioning hole 26, and the first measuring rod 9 and the second measuring rod 10 are movably arranged on the positioning hole 26 of the clip 8 respectively. Be equipped with arch 25 on the slider 6, be equipped with spout 15 on the base 1, be equipped with recess 21 in the spout 15, arch 25 slides and sets up in the recess 21. A mounting rack 22 is fixed on the second measuring rod 10, a sliding rod 17 is sleeved on the mounting rack 22 from top to bottom, and the second measuring head 16 is arranged at one end, far away from the mounting rack 22, of the sliding rod 17. And a second threaded hole 28 is formed in the slide bar 17, the position of the second threaded hole 28 corresponds to the position of the mounting frame 22, and a locking screw 27 is arranged in the second threaded hole 28 and used for locking the slide bar 17 on the mounting frame 22.
The working principle is as follows: the outer ring of the bearing 3 is clamped by the chuck 2, the sliding block 6 is used for adjusting the position of the first measuring head 4, if the roundness of the outer ring of the bearing 3 needs to be measured, the first measuring head 4 is contacted with the outer ring of the bearing 3 by the adjusting measuring rod 9, the chuck 2 is rotated, data can be displayed on the digital display meter 5, the data is recorded, and the average number is obtained through multiple measurements.
If the roundness of the inner ring of the bearing 3 needs to be measured, the chuck 2 extends into the inner ring of the bearing 3, then the clamping jaws on the chuck 2 support the inner ring of the bearing 3, the first measuring head 4 is tightly attached to the inner ring of the bearing 3 by adjusting the measuring rod 9, the chuck 2 is rotated, data on the digital display table 5 are read, the data are recorded, and the average number is obtained through multiple measurements.
If the concentricity needs to be measured, the motor 12 is started, the motor 12 drives the screw rod 19 to rotate (because the screw rod 19 is provided with two sections of threads with different screw directions, and the screw directions of the mounting holes on the sliding pair 18 are consistent, so that the sliding pair 18 can only move relatively or oppositely), the screw rod 19 rotates to drive the sliding pair 18 to move oppositely, at the moment, the connecting rod 20 drives the top plate 11 to ascend, the top plate 11 drives the oil cylinder 13 to ascend, the oil cylinder 13 is aligned with the inner ring of the bearing 3, the motor 12 is closed to start the oil cylinder 13 until the fastening block 14 extends into the inner ring of the bearing 3 and is attached to the inner ring of the bearing 3, and the heating device is opened, so that the fastening block 14 expands to achieve. The sliding block 6 is used for adjusting the position of the fixing rod 10 to be aligned with the bearing 3, the sliding rod 17 on the mounting frame 22 is slid, so that the distance between the upper sliding rod 17 and the lower sliding rod 17 corresponds to the size of the outer ring of the bearing 3, the locking screw 27 is screwed down, the second measuring head 16 on the sliding rod 17 is attached to the outer ring of the bearing 3, the chuck 2 is rotated, the arc track of the outer ring can be measured, and the position of the circle center is calculated, the digital display 5 analyzes the measured position of the circle center of the outer ring and the position of the circle center of the fastening block 14 to obtain the concentricity of the outer ring and the fastening block 14, due to the heating device in the fastening block 14, the fastening block 14 is in interference with the inner ring of the bearing 3, the fastening block.
Claims (8)
1. The utility model provides a bearing circularity and concentricity measuring device which characterized in that: including base (1) and supporting mechanism, it is equipped with chuck (2) that are used for centre gripping bearing (3) to rotate on base (1), supporting mechanism one end activity sets up on base (1), the other end is equipped with first measuring head (4) that are used for detecting the circularity, is used for measuring second measuring head (16) of concentricity and shows digital display table (5) that detect data, on base (1) with the position that chuck (2) are relative is equipped with hoist mechanism, hoist mechanism is used for withstanding bearing (3).
2. A bearing roundness and concentricity measuring apparatus according to claim 1, wherein: the lifting mechanism comprises a motor (12) fixed on the base (1) and a lead screw (19) connected with a rotating shaft of the motor (12), the other end of the lead screw (19) is fixed in a bearing seat (23), the bearing seat (23) is fixed on the base (1), two sections of threads with opposite screwing directions are arranged on the lead screw (19), two moving pairs (18) are further arranged on the lead screw (19), the moving pairs (18) are arranged on the base (1) in a sliding manner, threaded holes I (24) with consistent screwing directions are formed in the moving pairs (18), the two moving pairs (18) are respectively connected with the two threads of the lead screw (19) through the threaded holes I (24), connecting rods (20) are hinged to the two ends of the moving pairs (18), the two connecting rods (20) on the moving pairs (18) are arranged in opposite directions, and the connecting rods (20) are hinged to the top plate (11), an oil cylinder (13) is fixed on the top plate (11), a piston of the oil cylinder (13) is connected with a fastening block (14) used for propping against the inner ring of the bearing (3), and the size of the fastening block (14) corresponds to that of the inner ring of the bearing (3).
3. A bearing roundness and concentricity measuring apparatus according to claim 2, wherein: the fastening block (14) is made of 45# steel, and a heating device is arranged in the fastening block (14).
4. A bearing roundness and concentricity measuring apparatus according to claim 1, wherein: the supporting mechanism is in including sliding the setting slider (6) on base (1), slider (6) and installation pole (7) fixed connection, the activity is equipped with two buckles (8) on installation pole (7), two rotate respectively on buckle (8) and be equipped with measuring stick (9) and measuring stick two (10), first measuring head (4) with digital display table (5) are fixed to be set up on measuring stick (9), second measuring head (16) are fixed to be set up on measuring stick two (10).
5. A bearing roundness and concentricity measuring apparatus according to claim 4, wherein: the utility model discloses a measuring device, including mounting hole, clamping buckle (8) are including clamping part and installation department, mounting groove (30) have been seted up on the installation department, clamping buckle (8) are passed through mounting groove (30) activity sets up on installation pole (7), the clamping part is equipped with the centre gripping hole, centre gripping downthehole clamping rod (29) that is fixed with, be equipped with locating hole (26) on clamping rod (29), measuring stick (9) and measuring stick two (10) are movable respectively and are set up two clamping buckle (8) on locating hole (26).
6. A bearing roundness and concentricity measuring apparatus according to claim 4, wherein: be equipped with on slider (6) protruding (25), be equipped with spout (15) on base (1), be equipped with recess (21) in spout (15), protruding (25) slide to be set up in recess (21).
7. A bearing roundness and concentricity measuring apparatus according to claim 4, wherein: be fixed with mounting bracket (22) on measuring stick two (10), mounting bracket (22) all overlap from top to bottom and be equipped with slide bar (17), second measuring head (16) set up slide bar (17) are kept away from the one end of mounting bracket (22).
8. A bearing roundness and concentricity measuring apparatus according to claim 7, wherein: and a second threaded hole (28) is formed in the sliding rod (17), and a locking screw (27) is arranged in the second threaded hole (28) and used for locking the sliding rod (17) on the mounting frame (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156527.2A CN110779426A (en) | 2019-11-22 | 2019-11-22 | Bearing roundness and concentricity measuring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911156527.2A CN110779426A (en) | 2019-11-22 | 2019-11-22 | Bearing roundness and concentricity measuring device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110779426A true CN110779426A (en) | 2020-02-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911156527.2A Pending CN110779426A (en) | 2019-11-22 | 2019-11-22 | Bearing roundness and concentricity measuring device |
Country Status (1)
| Country | Link |
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| CN (1) | CN110779426A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112683122A (en) * | 2021-01-11 | 2021-04-20 | 张帆 | Hub detection device for automobile part production |
| CN116772690A (en) * | 2023-08-21 | 2023-09-19 | 山东轴研精密轴承有限公司 | Bearing ring opening roundness detector |
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| CN112683122A (en) * | 2021-01-11 | 2021-04-20 | 张帆 | Hub detection device for automobile part production |
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| CN116772690A (en) * | 2023-08-21 | 2023-09-19 | 山东轴研精密轴承有限公司 | Bearing ring opening roundness detector |
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Application publication date: 20200211 |