CN110186552B - Full-automatic third-generation hub bearing vibration measuring instrument and measuring method - Google Patents
Full-automatic third-generation hub bearing vibration measuring instrument and measuring method Download PDFInfo
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- CN110186552B CN110186552B CN201910549143.0A CN201910549143A CN110186552B CN 110186552 B CN110186552 B CN 110186552B CN 201910549143 A CN201910549143 A CN 201910549143A CN 110186552 B CN110186552 B CN 110186552B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01H—MEASUREMENT OF MECHANICAL VIBRATIONS OR ULTRASONIC, SONIC OR INFRASONIC WAVES
- G01H11/00—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties
- G01H11/06—Measuring mechanical vibrations or ultrasonic, sonic or infrasonic waves by detecting changes in electric or magnetic properties by electric means
Abstract
The invention discloses a full-automatic third-generation wheel hub bearing vibration measuring instrument and a measuring method. The invention realizes the automatic lifting of the measuring head, the automatic three-point measurement of the bearing to be measured, the automatic up-down bearing and the automatic bearing transportation when measuring the bearing. The sensor lifting and falling mechanism of the measuring head of the vibration measuring instrument not only avoids the defect of scratching the measuring surface when the measured bearing is assembled and disassembled and automatically realizes a mechanism for three-point measurement, but also realizes corresponding excellent, good and poor material distribution structures for the measured bearing.
Description
Technical Field
The invention relates to a measuring instrument and a measuring method, in particular to a full-automatic third-generation hub bearing vibration measuring instrument and a measuring method.
Background
Because the structure of the third-generation hub bearing of the automobile is complex, the vibration quality of the third-generation hub bearing of the automobile is basically detected in a state that the detection cannot be carried out or is simply and manually detected in China at present, the simple and manual detection has low detection efficiency, the labor intensity of detection personnel is increased, human errors in the detection process cannot be overcome, the statistical efficiency of a manager is low, and the development trend of the vibration quality of the bearing is lagged behind the development trend of foreign detection.
Disclosure of Invention
In order to solve the problems and the defects, the invention provides a full-automatic third-generation hub bearing vibration measuring instrument and a measuring method.
The technical scheme of the invention is as follows:
a full-automatic third-generation wheel hub bearing vibration measuring instrument comprises a large platform 2, a frame 3, a driving mechanism, a conveying lifting mechanism, an automatic conveying mechanism, a measuring lifting mechanism, a force applying mechanism 15 and a measuring mechanism 14;
the frame 3 is used for bearing a large platform 2 of a full-automatic third-generation hub bearing vibration measuring instrument; the large platform 2 is arranged on the upper surface of the frame 3 and is used for receiving other parts of the full-automatic third-generation hub bearing vibration measuring instrument;
the driving mechanism comprises a mandrel 1, a spindle motor 4, a belt and an oil static pressure spindle 9, wherein the spindle motor 4 is fixed on the frame 3, the output end of the spindle motor 4 is linked with the tail end of the oil static pressure spindle 9 through the belt, and the upper end of the oil static pressure spindle 9 sequentially penetrates through the frame 3 and the large platform 2 to be fixedly connected with the mandrel 1, so that the mandrel 1 is driven to rotate;
the automatic conveying mechanism comprises a front stopping mechanism 6, a rear stopping mechanism 7, a conveyor 11, a conveying motor 12 and a tray 10; the conveyor 11 is fixed above the large platform 2 and corresponds to the measuring mechanism 14 in position; the front gear stopping mechanism 6 is positioned at the starting end of the advancing direction of the conveyor 11 and is fixed on the body of the conveyor 11, and the front gear stopping mechanism 6 comprises a front gear stopping cylinder and a front stopping proximity switch; the rear gear stopping mechanism 7 is positioned in the middle of the advancing direction of the conveyor 11 and is fixed on the body of the conveyor 11, and the rear gear stopping mechanism 7 comprises a rear gear stopping cylinder and a rear stopping proximity switch; the conveying motor 12 is used for driving the conveyor 11;
the conveying lifting mechanism comprises a conveying lifting cylinder 5, a connecting plate 20, an air connector and an air pipe; the two conveying lifting cylinders 5 are symmetrically fixed on the side face of the rack 3, piston rods of the conveying lifting cylinders 5 are connected with the connecting plate 20 and used for fixing and carrying the conveyor 11, and lifting of the automatic conveying mechanism is achieved through lifting and retracting of the conveying lifting cylinders 5; the air pipe is communicated with the conveying lifting cylinder 5 through an air connector and supplies air to the conveying lifting cylinder 5;
the measuring lifting mechanism comprises a measuring mechanism lifting cylinder 13, an upright post 17 and an upper plate 16; the lower ends of a plurality of upright posts 17 are respectively and vertically fixed on the large platform 2, and the upper ends of the upright posts 17 are fixedly connected with an upper plate 16; the measuring mechanism lifting cylinder 13 is fixed on the corresponding upright post 17;
the force applying mechanism 15 comprises a vertical plate 18, a horizontal plate 19, an angular contact bearing 31, a force applying cylinder 32, a movable guide sleeve 33, a force applying disc 34 and a fixed sleeve 35; the upper ends of the two vertical plates 18 are respectively vertically fixed on the lower surface of the upper plate 16 and positioned at the inner side of the upright post 17; the lower ends of the two vertical plates 18 are fixedly connected with a transverse plate 19; the upper end of the boosting cylinder 32 is fixed at the middle part of the upper plate 16, and the lower end of the boosting cylinder 32 penetrates through the transverse plate 19 and is connected with the movable guide sleeve 33; the fixed sleeve 35 is sleeved outside the movable guide sleeve 33, and the upper end of the fixed sleeve 35 is fixed on the transverse plate 19; the stressing disc 34 is connected with the movable guide sleeve 33 through an angular contact bearing 31;
the measuring mechanism 14 comprises a rough adjusting moving plate 21, a rough adjusting fixed seat 22, a fine adjusting fixed seat 23, a fine adjusting hand wheel 24, a sensor cylinder 25, a sensor fixed seat 26, a sensor sleeve 27, a locking hand button 28, a measuring fixed seat 30 and a sensor; the upper end of the measuring fixed seat 30 is fixed on the lower surface of the transverse plate 19, and the lower end of the measuring fixed seat 30 is connected with the rough adjusting fixed seat 22; the coarse adjustment fixed seat 22 is connected with the coarse adjustment movable plate 21 to realize coarse adjustment of the position of the sensor; the bottom of the coarse adjustment fixing seat 22 is connected with a fine adjustment fixing seat 23, a fine adjustment hand wheel 24 is arranged on one side of the fine adjustment fixing seat 23, and fine adjustment of the position of the sensor is achieved by rotating the fine adjustment hand wheel 24; the bottom of the fine adjustment fixing seat 23 is connected with a sensor cylinder 25, the piston rod end of the sensor cylinder 25 is connected with a sensor fixing seat 26, and a sensor sleeve 27 is fixedly connected to the sensor fixing seat 26; the sensor is fixed on the sensor fixing seat 26 and is wrapped by the sensor sleeve 27, and the sensor contact 29 is exposed; a locking hand button 28 is arranged on the sensor fixing seat 26 to realize locking and fixing of the sensor; the measuring fixing seats 30 of the three sets of measuring mechanisms 14 are respectively fixed on the transverse plate 19 at intervals of 120 degrees, so that three-point measurement of the vibration signals of the hub bearing 8 of the third generation to be measured is realized.
The invention has the beneficial effects that: the sensor lifting and falling mechanism of the measuring head of the vibration measuring instrument not only avoids the defect of scratching the measuring surface when the measured bearing is assembled and disassembled and automatically realizes a mechanism for three-point measurement, but also realizes corresponding excellent, good and poor material distribution structures for the measured bearing.
Drawings
FIG. 1 is a schematic view of the whole structure of a bearing vibration measuring instrument in the state that a conveying lifting cylinder extends out;
FIG. 2(a) is a schematic view of the whole structure of the bearing vibration measuring instrument in the retracted state of the conveying lifting cylinder;
FIG. 2(b) is a cross-sectional view A-A of FIG. 2 (a);
FIG. 3 is a schematic view of a measuring mechanism;
FIG. 4 is a schematic view of a force applying mechanism;
in the figure: 1, a mandrel; 2, a large platform; 3, a frame; 4, a spindle motor; 5, conveying a lifting cylinder; 6, a front gear stopping mechanism; 7 rear gear stop mechanism; 8, measuring a third-generation hub bearing; 9 oil hydrostatic spindle; 10 trays; 11 a conveyor; 12 a conveying motor; 13 mechanism lifting cylinder; 14 a measuring mechanism; 15 a force applying mechanism; 16, an upper plate; 17 upright posts; 18 vertical plates; 19, a transverse plate; 20 connecting plates; 21 roughly adjusting a moving plate; 22 roughly adjusting the fixed seat; 23 fine-tuning the fixed seat; 24 fine adjustment of the hand wheel; 25 sensor cylinders; 26 a sensor holder; 27 a sensor sleeve; 28 locking the hand button; 29 a sensor contact; 30 measuring a fixed seat; 31 an angular contact bearing; 32 force application cylinders; 33, a movable guide sleeve; 34 a force application disc; 35 securing the sleeve.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention will be described in further detail below with reference to the accompanying drawings:
a full-automatic third-generation wheel hub bearing vibration measuring instrument comprises a large platform 2, a frame 3, a driving mechanism, a conveying lifting mechanism, an automatic conveying mechanism, a measuring lifting mechanism, a force applying mechanism 15 and a measuring mechanism 14;
the frame 3 is used for bearing a large platform 2 of a full-automatic third-generation hub bearing vibration measuring instrument; the large platform 2 is arranged on the upper surface of the frame 3 and is used for receiving other parts of the full-automatic third-generation hub bearing vibration measuring instrument;
the driving mechanism comprises a mandrel 1, a spindle motor 4, a belt and an oil static pressure spindle 9, wherein the spindle motor 4 is fixed on the frame 3, the output end of the spindle motor 4 is linked with the tail end of the oil static pressure spindle 9 through the belt, and the upper end of the oil static pressure spindle 9 sequentially penetrates through the frame 3 and the large platform 2 to be fixedly connected with the mandrel 1, so that the mandrel 1 is driven to rotate;
the automatic conveying mechanism comprises a front stopping mechanism 6, a rear stopping mechanism 7, a conveyor 11, a conveying motor 12 and a tray 10; the conveyor 11 is fixed above the large platform 2 and corresponds to the measuring mechanism 14 in position; the front gear stopping mechanism 6 is positioned at the starting end of the advancing direction of the conveyor 11 and is fixed on the body of the conveyor 11, and the front gear stopping mechanism 6 comprises a front gear stopping cylinder and a front stopping proximity switch; the rear gear stopping mechanism 7 is positioned in the middle of the advancing direction of the conveyor 11 and is fixed on the body of the conveyor 11, and the rear gear stopping mechanism 7 comprises a rear gear stopping cylinder and a rear stopping proximity switch; the conveying motor 12 is used for driving the conveyor 11;
the conveying lifting mechanism comprises a conveying lifting cylinder 5, a connecting plate 20, an air connector and an air pipe; the two conveying lifting cylinders 5 are symmetrically fixed on the side face of the rack 3, piston rods of the conveying lifting cylinders 5 are connected with the connecting plate 20 and used for fixing and carrying the conveyor 11, and lifting of the automatic conveying mechanism is achieved through lifting and retracting of the conveying lifting cylinders 5; the air pipe is communicated with the conveying lifting cylinder 5 through an air connector and supplies air to the conveying lifting cylinder 5;
the measuring lifting mechanism comprises a measuring mechanism lifting cylinder 13, an upright post 17 and an upper plate 16; the lower ends of a plurality of upright posts 17 are respectively and vertically fixed on the large platform 2, and the upper ends of the upright posts 17 are fixedly connected with an upper plate 16; the measuring mechanism lifting cylinder 13 is fixed on the corresponding upright post 17;
the force applying mechanism 15 comprises a vertical plate 18, a horizontal plate 19, an angular contact bearing 31, a force applying cylinder 32, a movable guide sleeve 33, a force applying disc 34 and a fixed sleeve 35; the upper ends of the two vertical plates 18 are respectively vertically fixed on the lower surface of the upper plate 16 and positioned at the inner side of the upright post 17; the lower ends of the two vertical plates 18 are fixedly connected with a transverse plate 19; the upper end of the boosting cylinder 32 is fixed at the middle part of the upper plate 16, and the lower end of the boosting cylinder 32 penetrates through the transverse plate 19 and is connected with the movable guide sleeve 33; the fixed sleeve 35 is sleeved outside the movable guide sleeve 33, and the upper end of the fixed sleeve 35 is fixed on the transverse plate 19; the stressing disc 34 is connected with the movable guide sleeve 33 through an angular contact bearing 31;
the measuring mechanism 14 comprises a rough adjusting moving plate 21, a rough adjusting fixed seat 22, a fine adjusting fixed seat 23, a fine adjusting hand wheel 24, a sensor cylinder 25, a sensor fixed seat 26, a sensor sleeve 27, a locking hand button 28, a measuring fixed seat 30 and a sensor; the upper end of the measuring fixed seat 30 is fixed on the lower surface of the transverse plate 19, and the lower end of the measuring fixed seat 30 is connected with the rough adjusting fixed seat 22; the coarse adjustment fixed seat 22 is connected with the coarse adjustment movable plate 21 to realize coarse adjustment of the position of the sensor; the bottom of the coarse adjustment fixing seat 22 is connected with a fine adjustment fixing seat 23, a fine adjustment hand wheel 24 is arranged on one side of the fine adjustment fixing seat 23, and fine adjustment of the position of the sensor is achieved by rotating the fine adjustment hand wheel 24; the bottom of the fine adjustment fixing seat 23 is connected with a sensor cylinder 25, the piston rod end of the sensor cylinder 25 is connected with a sensor fixing seat 26, and a sensor sleeve 27 is fixedly connected to the sensor fixing seat 26; the sensor is fixed on the sensor fixing seat 26 and is wrapped by the sensor sleeve 27, and the sensor contact 29 is exposed; a locking hand button 28 is arranged on the sensor fixing seat 26 to realize locking and fixing of the sensor; the measuring fixing seats 30 of the three sets of measuring mechanisms 14 are respectively fixed on the transverse plate 19 at intervals of 120 degrees, so that three-point measurement of the vibration signals of the hub bearing 8 of the third generation to be measured is realized.
The oil hydrostatic pressure main shaft 9 comprises a main shaft, a bearing bush, a bush seat, a belt pulley and a restrictor; the rotation precision of the mandrel 1 is less than or equal to 3u, the bearing capacity is less than or equal to 1500 newtons, and the basic vibration is below 5 dB.
A method for carrying out vibration measurement by adopting a full-automatic third-generation hub bearing vibration measuring instrument comprises the following steps:
the method comprises the following steps: when the tray A drives the hub bearing 8 of the third generation to be detected to move forwards on the conveyor 11 to the front gear stopping mechanism 6, the front stopping proximity switch is on; if the rear stop proximity switch is on, namely a tray B is arranged in front of the rear stop mechanism 7, a front stop cylinder of the front stop mechanism 6 blocks the tray A; if the rear stop approach switch is turned off, namely the front tray B is not arranged in front of the rear stop mechanism 7, the front stop cylinder on the front stop mechanism 6 retracts, and the tray A reaches the rear stop mechanism 7 under the driving of the conveyor 11 and is blocked by the rear stop cylinder of the rear stop mechanism 7;
step two: the conveying lifting cylinder 5 of the conveying lifting mechanism retracts to drive the automatic conveying mechanism to descend, the detected third-generation hub bearing 8 is in contact with the mandrel 1, and the detected bearing 8 is blocked by the mandrel and separated from the tray 10 because a gap is reserved between the detected bearing 8 and the tray 10, and the tray 10 is always positioned above the conveying belt due to the self weight of the tray 10 as shown in figure 2, so that the detected third-generation hub bearing 8 is separated from the tray A;
step three: the measuring mechanism lifting cylinder 13 of the measuring lifting mechanism retracts to drive the force applying mechanism 15 and the measuring mechanism 14 to integrally descend, so that the sensor of the measuring mechanism 14 reaches the horizontal position of a measuring position;
step four: a boosting cylinder 32 on the boosting mechanism 15 extends out to drive a boosting disc 34 to completely push the hub bearing 8 of the third generation to be tested onto the mandrel 1 and apply certain pressure;
step five: the oil hydrostatic spindle 9 drives the mandrel 1 to rotate under the driving of the spindle motor 4, so as to drive the inner ring of the hub bearing 8 of the third generation to be tested to rotate; the sensor cylinder 25 extends out, so that a sensor contact 29 of the sensor contacts the outer ring of the hub bearing 8 of the third generation to be measured, and three-point measurement of the vibration signal of the hub bearing 8 of the third generation to be measured is started;
step six: after the vibration signal is measured, the sensor cylinder 25 retracts, so that the sensor contact 29 of the sensor leaves the outer ring of the third-generation hub bearing 8 to be measured; the measuring mechanism lifting cylinder 13 ascends, and the stressing cylinder 32 retracts; the conveying lifting cylinder 5 rises to drive the automatic conveying mechanism to rise, and the hub bearing 8 of the third generation to be tested is separated from the mandrel 1 and enters the tray A under the action of the tray A; the rear gear stopping cylinder of the rear gear stopping mechanism 7 retracts, so that the tray A with the third-generation hub bearing 8 to be detected moves backwards to the material distributing mechanism on the conveyor 11;
step seven: the host machine picks up the vibration signal of the hub bearing 8 of the third generation to be tested and converts the vibration signal into a corresponding electric signal; the material distribution mechanism classifies the hub bearings 8 of the third generation to be tested according to the host computer instruction, and the hub bearings 8 of the third generation to be tested automatically enter the material channels corresponding to the excellent, good and poor materials.
During measurement, the sensor contact 29 is positioned at one half of the width of the hub bearing 8 of the third generation to be measured; the sensor contact 29 applies force to the surface which is in contact with the hub bearing 8 of the third generation to be measured, so that the surface has certain contact rigidity.
The vibration measuring method is used for measuring bearings with various specifications.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are included in the scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (5)
1. The full-automatic third-generation hub bearing vibration measuring instrument is characterized by comprising a large platform (2), a rack (3), a driving mechanism, a conveying lifting mechanism, an automatic conveying mechanism, a measuring lifting mechanism, a force applying mechanism (15) and a measuring mechanism (14);
the rack (3) is used for bearing a large platform (2) of a full-automatic third-generation hub bearing vibration measuring instrument; the large platform (2) is arranged on the upper surface of the frame (3) and is used for receiving other parts of the full-automatic third-generation hub bearing vibration measuring instrument;
the driving mechanism comprises a mandrel (1), a spindle motor (4), a belt and an oil static pressure spindle (9), the spindle motor (4) is fixed on the rack (3), the output end of the spindle motor (4) is linked with the tail end of the oil static pressure spindle (9) through the belt, and the upper end of the oil static pressure spindle (9) sequentially penetrates through the rack (3), the large platform (2) and the mandrel (1) to be fixedly connected, so that the mandrel (1) is driven to rotate;
the automatic conveying mechanism comprises a front stopping mechanism (6), a rear stopping mechanism (7), a conveyor (11), a conveying motor (12) and a tray (10); the conveyor (11) is fixed above the large platform (2) and corresponds to the measuring mechanism (14); the front gear stopping mechanism (6) is positioned at the starting end of the advancing direction of the conveyor (11) and is fixed on the body of the conveyor (11), and the front gear stopping mechanism (6) comprises a front gear stopping cylinder and a front stopping proximity switch; the rear gear stopping mechanism (7) is positioned in the middle of the advancing direction of the conveyor (11) and fixed on the body of the conveyor (11), and the rear gear stopping mechanism (7) comprises a rear gear stopping cylinder and a rear stopping proximity switch; the conveying motor (12) is used for driving the conveyor (11);
the conveying lifting mechanism comprises a conveying lifting cylinder (5), a connecting plate (20), an air connector and an air pipe; the two conveying lifting cylinders (5) are symmetrically fixed on the side face of the rack (3), piston rods of the conveying lifting cylinders (5) are connected with the connecting plate (20) and used for fixing and carrying the conveyor (11), and the lifting of the automatic conveying mechanism is realized through the lifting and retracting of the conveying lifting cylinders (5); the air pipe is communicated with the conveying lifting cylinder (5) through an air connector and supplies air to the conveying lifting cylinder (5);
the measuring lifting mechanism comprises a measuring mechanism lifting cylinder (13), an upright post (17) and an upper plate (16); the lower ends of a plurality of upright posts (17) are respectively and vertically fixed on the large platform (2), and the upper ends of the upright posts (17) are fixedly connected with an upper plate (16); the measuring mechanism lifting cylinder (13) is fixed on the corresponding upright post (17);
the force application mechanism (15) comprises a vertical plate (18), a transverse plate (19), an angular contact bearing (31), a force application cylinder (32), a movable guide sleeve (33), a force application disc (34) and a fixed sleeve (35); the upper ends of the two vertical plates (18) are respectively and vertically fixed on the lower surface of the upper plate (16) and positioned at the inner side of the upright post (17); the lower ends of the two vertical plates (18) are fixedly connected with a transverse plate (19); the upper end of the boosting cylinder (32) is fixed in the middle of the upper plate (16), and the lower end of the boosting cylinder (32) penetrates through the transverse plate (19) to be connected with the movable guide sleeve (33); the fixed sleeve (35) is sleeved outside the movable guide sleeve (33), and the upper end of the fixed sleeve (35) is fixed on the transverse plate (19); the stressing disc (34) is connected with the movable guide sleeve (33) through an angular contact bearing (31);
the measuring mechanism (14) comprises a coarse adjusting moving plate (21), a coarse adjusting fixed seat (22), a fine adjusting fixed seat (23), a fine adjusting hand wheel (24), a sensor cylinder (25), a sensor fixed seat (26), a sensor sleeve (27), a locking hand button (28), a measuring fixed seat (30) and a sensor; the upper end of the measuring fixed seat (30) is fixed on the lower surface of the transverse plate (19), and the lower end of the measuring fixed seat (30) is connected with the rough adjusting fixed seat (22); the coarse adjustment fixed seat (22) is connected with a coarse adjustment moving plate (21) to realize the coarse adjustment of the position of the sensor; the bottom of the coarse adjustment fixing seat (22) is connected with a fine adjustment fixing seat (23), a fine adjustment hand wheel (24) is arranged on one side of the fine adjustment fixing seat (23), and fine adjustment of the position of the sensor is realized by rotating the fine adjustment hand wheel (24); the bottom of the fine adjustment fixing seat (23) is connected with a sensor cylinder (25), the piston rod end of the sensor cylinder (25) is connected with a sensor fixing seat (26), and a sensor sleeve (27) is fixedly connected to the sensor fixing seat (26); the sensor is fixed on the sensor fixing seat (26) and is wrapped by the sensor sleeve (27), and the sensor contact (29) is exposed; a locking hand button (28) is arranged on the sensor fixing seat (26) to realize locking and fixing of the sensor; three sets of measuring mechanism (14) measure fixing base (30) and fix respectively on diaphragm (19) at an interval of 120, realize being surveyed three generations of wheel hub bearing (8) vibration signal's three-point measurement.
2. The fully automatic third generation wheel hub bearing vibration measuring instrument according to claim 1, wherein the oil hydrostatic spindle (9) comprises a spindle, a bearing bush, a bush seat, a belt pulley and a restrictor; the rotation precision of the mandrel (1) is less than or equal to 3u, the bearing capacity is less than or equal to 1500 Newton, and the basic vibration is below 5 dB.
3. A method for vibration measurement using the fully automatic third generation wheel hub bearing vibration measuring instrument of claim 1, comprising the steps of:
the method comprises the following steps: when the tray A drives the hub bearing (8) of the third generation to be detected to move forwards on the conveyor (11) to the front gear stop mechanism (6), the front stop proximity switch is on; if the rear stop proximity switch is on, namely a tray B is arranged in front of the rear gear stop mechanism (7), a front gear stop cylinder of the front gear stop mechanism (6) blocks the tray A; if the rear stop approach switch is turned off, namely a tray B is not arranged in front of the rear stop mechanism (7), a front stop cylinder on the front stop mechanism (6) retracts, and the tray A reaches the rear stop mechanism (7) under the drive of the conveyor (11) and is blocked by the rear stop cylinder of the rear stop mechanism (7);
step two: a conveying lifting cylinder (5) of the conveying lifting mechanism retracts to drive the automatic conveying mechanism to descend, and the hub bearing (8) of the third generation to be detected is in contact with the mandrel (1) to separate the hub bearing (8) of the third generation to be detected from the tray A;
step three: a measuring mechanism lifting cylinder (13) of the measuring lifting mechanism retracts to drive the force application mechanism (15) and the measuring mechanism (14) to integrally descend, so that a sensor of the measuring mechanism (14) reaches the horizontal position of a measuring position;
step four: a stress application cylinder (32) on the stress application mechanism (15) extends out to drive a stress application disc (34) to completely push the hub bearing (8) of the third generation to be tested onto the mandrel (1) and apply certain pressure;
step five: the oil hydrostatic pressure main shaft (9) drives the mandrel (1) to rotate under the driving of the main shaft motor (4), so that the inner ring of the hub bearing (8) of the third generation to be tested is driven to rotate; the sensor cylinder (25) extends out, so that a sensor contact (29) of the sensor is contacted with the outer ring of the third-generation wheel hub bearing (8) to be measured, and three-point measurement of the vibration signal of the third-generation wheel hub bearing (8) to be measured is started;
step six: after the vibration signal is measured, the sensor cylinder (25) retracts, so that a sensor contact (29) of the sensor leaves the outer ring of the third-generation wheel hub bearing (8) to be measured; the measuring mechanism lifting cylinder (13) rises, and the stressing cylinder (32) retracts; the conveying lifting cylinder (5) rises to drive the automatic conveying mechanism to rise, and the hub bearing (8) of the third generation to be detected is separated from the mandrel (1) and enters the tray A under the action of the tray A; a rear gear stopping cylinder of the rear gear stopping mechanism (7) retracts, so that the tray A with the third-generation hub bearing (8) to be detected moves backwards to the material distributing mechanism on the conveyor (11);
step seven: the host machine picks up the vibration signal of the hub bearing (8) of the third generation to be tested and converts the vibration signal into a corresponding electric signal; the material distribution mechanism classifies the hub bearings (8) of the third generation to be tested according to the host computer instruction, and the hub bearings (8) of the third generation to be tested automatically enter material channels corresponding to the excellent, good and poor materials.
4. A method according to claim 3, characterized in that the sensor contact (29) is located, when measuring, at one half the width of the third generation hub bearing (8) to be measured; the sensor contact (29) applies force measurement to the surface which is in contact with the third generation hub bearing (8) to be measured, so that the sensor contact has certain contact rigidity.
5. A method according to claim 3 or 4, characterized in that the vibration measuring method is used for measuring bearings of various specifications.
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| CN112474395B (en) * | 2020-12-16 | 2022-04-15 | 大连贝林轴承仪器有限公司 | Manipulator type full-automatic third-generation hub bearing vibration measuring instrument and measuring method |
| CN113654814B (en) * | 2021-08-13 | 2022-04-19 | 滁州学院 | Detection mechanism for automobile hub |
| CN114739506B (en) * | 2022-04-20 | 2023-09-26 | 杭州宝利嘉轴承有限公司 | Full-automatic third-generation hub bearing vibration measuring instrument and measuring method |
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