CN112284322A - Hub bearing axial clearance measuring machine and measuring method thereof - Google Patents
Hub bearing axial clearance measuring machine and measuring method thereof Download PDFInfo
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- CN112284322A CN112284322A CN202011182350.6A CN202011182350A CN112284322A CN 112284322 A CN112284322 A CN 112284322A CN 202011182350 A CN202011182350 A CN 202011182350A CN 112284322 A CN112284322 A CN 112284322A
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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
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/16—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring distance of clearance between spaced objects
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Abstract
The invention provides a hub bearing axial clearance measuring machine and a measuring method thereof. The hub bearing axial clearance measuring machine further comprises a pressing component, and the pressing component is used for pressing the outer ring of the hub bearing to be measured. The displacement sensor is used for acquiring the axial displacement of the inner ring of the hub bearing to be measured relative to the outer ring. According to the hub bearing axial clearance measuring machine and the measuring method thereof provided by the invention, the axial clearance value of the hub bearing to be measured can be more accurately obtained, and the inferior-quality hub bearing products with axial clearance not reaching the standard can be timely detected.
Description
Technical Field
The invention relates to the technical field of detection devices, in particular to a hub bearing axial clearance measuring machine and a measuring method thereof.
Background
The axial play refers to a movement amount when the bearing is not mounted on the shaft or the bearing housing, and then one of the inner ring and the outer ring is fixed, and then the other is moved in the axial direction. The magnitude of the play during operation (referred to as the working play) has an influence on the rolling fatigue life of the bearing, the temperature rise, the noise, the vibration, and other properties.
The hub bearing has wide application in the field of passenger vehicles, is one of important parts of automobiles, and therefore, higher requirements are put forward on the axial play of the finished hub bearing. If the axial clearance value does not meet the design technical requirements, the end face runout of the brake disc is poor if the axial clearance value is small, the driving comfort is affected, and safety accidents such as tyre abrasion and abnormal loosening of the front suspension under stress can be caused if the axial clearance value is heavy.
In the existing device for detecting the axial play of the hub bearing, a dial indicator is usually adopted to obtain the axial displacement of the inner ring of the hub bearing, so that the error of the measured axial play value is large, and the measurement result is not accurate enough.
Disclosure of Invention
In view of the above, a first object of the present invention is to provide a hub bearing axial play measuring machine capable of accurately measuring the hub bearing axial play.
A second object of the present invention is to provide a measuring method of a hub bearing axial play measuring machine.
In order to achieve the first purpose, the invention provides a hub bearing axial clearance measuring machine, which comprises an upper measuring assembly, a workbench, a lower measuring assembly and a base, wherein the upper measuring assembly is arranged above the workbench, a positioning seat is arranged between the upper measuring assembly and the lower measuring assembly, the workbench is arranged at the upper part of the base, the workbench surface is provided with a positioning seat, a pressing assembly and a displacement sensor, the upper measuring assembly and the displacement sensor are arranged above the workbench, the lower measuring assembly is arranged inside the base, a hub bearing to be measured is placed inside the positioning seat, the upper measuring assembly comprises a first working cylinder and a first driving motor, the output end of the first working cylinder is provided with a first piston rod, the output end of the first piston rod is provided with a first pressure head, the first pressure head is connected with the upper inner ring of the hub bearing to be measured, and the first driving motor is in transmission connection with the first, the first pressing head is driven to rotate. The lower measuring assembly comprises a second working cylinder and a second driving motor, a second piston rod is arranged at the output end of the second working cylinder, a second pressure head is arranged at the output end of the second piston rod, the second pressure head is connected with the lower inner ring of the hub bearing to be measured, and the second driving motor is in transmission connection with the second pressure head and used for driving the second pressure head to rotate. The hub bearing axial clearance measuring machine further comprises a pressing component, and the pressing component is used for pressing the outer ring of the hub bearing to be measured. And the displacement sensor is connected with the second piston rod and used for acquiring the axial displacement of the inner ring of the hub bearing to be detected.
In the above scheme, before the axial displacement of the inner ring of the hub bearing to be measured is obtained, the outer ring of the hub bearing to be measured is firstly pressed by the pressing component, so that an error generated when the axial displacement of the inner ring of the hub bearing to be measured is measured can be avoided. The axial displacement of the inner ring of the hub bearing to be measured is obtained by the displacement sensor, the obtained measurement result is more accurate, and the measured axial clearance value is more accurate and convincing.
Preferably, the compressing assembly comprises a compressing cylinder and a compressing plate, the compressing cylinder is arranged on the upper surface of the workbench, the compressing plate is arranged at the output end of the compressing cylinder, and the compressing plate is abutted to the outer ring of the hub bearing to be measured.
The further scheme is that the number of the compression cylinders and the compression plates is two, the two compression cylinders and the two compression plates are arranged in a one-to-one correspondence mode, and the two compression cylinders are arranged on the left side and the right side of the positioning seat respectively.
In the above scheme, after the wheel hub bearing to be measured is placed at the positioning seat, the pressing cylinder is started, and the pressing cylinder presses the outer ring of the wheel hub bearing to be measured through the pressing plate. The left side and the right side of the outer ring of the hub bearing to be tested are simultaneously compressed by the two compressing cylinders, so that a better compressing effect is achieved.
According to a further scheme, the hub bearing axial clearance measuring machine further comprises a first connecting plate, the first connecting plate is located above the workbench, a supporting column is arranged between the first connecting plate and the workbench, and a first working cylinder is arranged on the upper surface of the first connecting plate.
According to a further scheme, the hub bearing axial clearance measuring machine further comprises a second connecting plate, the second connecting plate is located between the first connecting plate and the workbench, the first driving motor is arranged on the second connecting plate, the first piston rod is connected with the upper surface of the second connecting plate, the first pressure head is connected with the lower surface of the second connecting plate, the guide rod is arranged between the first piston rod and the first driving motor, and the first connecting plate is provided with a through hole for the guide rod to pass through.
In the above scheme, after the first working cylinder is started, the first piston rod is pushed downwards to drive the whole second connecting plate to move downwards. First driving motor and first piston rod are fixed respectively in the left and right sides of second connecting plate, because first driving motor's dead weight, can produce an ascending reaction force in first pressure head department, and this ascending reaction force can influence first pressure head and to the effect of pushing down of the wheel hub bearing that awaits measuring, consequently sets up the guide bar and can play balanced effect between first driving motor and first piston rod, avoids first driving motor's dead weight to the influence that first pressure head brought.
The first driving motor is connected with the first pressure head, the second driving motor is connected with the second pressure head, and the second driving motor is connected with the second pressure head.
In the above scheme, start first driving motor, first driving motor passes through the drive belt and drives first pressure head rotation, and first straining wheel plays the effect of the first drive belt of tensioning, guarantees the transmission effect of first drive belt.
The output end of the second driving motor is provided with a second transmission belt, the second transmission belt is connected with the second pressure head, and the second transmission belt is provided with a second tensioning wheel which is used for tensioning the second transmission belt.
In the above scheme, start second driving motor, first driving motor passes through the drive belt and drives the second pressure head and rotate, and the second take-up pulley plays the effect of tensioning second drive belt, guarantees the transmission effect of second drive belt.
According to a further scheme, the hub bearing axial clearance measuring machine further comprises a lever mechanism, the lever mechanism comprises a lever seat and a lever, one end of the lever is connected with the displacement sensor, the other end of the lever is connected with the second piston rod, the lever seat is arranged on the lower surface of the workbench, and the middle of the lever is hinged to the lever seat.
In the above scheme, after the second driving motor is started, the second piston rod is pushed upwards to drive one end of the lever connected with the second piston rod to move upwards, the other end of the lever connected with the displacement sensor moves downwards to drive the displacement sensor to move downwards, the displacement sensor can sense the position change of the displacement sensor in the process, the lever is an equal-arm lever, when the second piston rod pushes the second pressure head to press the inner ring of the hub bearing to be detected to the limit position, the upward pushing displacement of the second piston rod is equal to the downward moving displacement of the displacement sensor, and the axial displacement of the upward movement of the inner ring of the hub bearing to be detected is obtained by the displacement sensor at the moment.
In a further scheme, an electronic display screen is arranged at the top of the first working cylinder.
In the above scheme, after the displacement sensor acquires the extreme axial displacement amount of the upward movement and the extreme axial displacement amount of the downward movement of the inner ring of the hub bearing to be measured, the axial clearance measurement value of the hub bearing to be measured can be obtained, and the axial clearance measurement value can be displayed on the electronic display screen. And a warning lamp is further arranged on the electronic display screen, and when the measured axial clearance value exceeds the technical standard of the hub bearing to be measured, the warning lamp can be lightened to prompt that the axial clearance value of the hub bearing to be measured does not reach the standard.
In order to achieve the second object of the present invention, the present invention provides a measuring method of a hub bearing axial clearance measuring machine, including the steps of:
placing the hub bearing to be tested in the positioning seat;
starting a pressing assembly to press the outer ring of the hub bearing to be tested;
starting a second driving motor and a second working cylinder, and when the starting time reaches a first preset time, closing the second driving motor to obtain a first displacement of the displacement sensor;
starting a first driving motor and a first working cylinder, wherein the pressure of the first working cylinder is twice that of the second working cylinder, and when the starting time reaches a second preset time, closing the second driving motor to obtain a second displacement of the displacement sensor;
and acquiring an axial clearance value, wherein the axial clearance value is the difference value between the first displacement and the second displacement.
In the above scheme, the pressure of the first working cylinder is twice the pressure of the second working cylinder, so that the pressing pressure needs to be firstly offset by the pressing pressure of the second working cylinder in the pressing process of the first working cylinder, and then the pressing pressure applied to the inner ring of the hub bearing to be tested can be equal to the upper pressure. In the process of pressing up and down the inner ring of the hub bearing to be measured, the inner ring of the bearing to be measured is required to be kept to rotate, so that the roller is engaged in the axial movement process of the inner ring of the bearing, the roller is engaged to the optimal position, and the roller is prevented from being clamped with the inner ring in the axial movement process of the inner ring of the bearing, so that the bearing cannot normally work and cannot be measured to obtain a correct clearance value.
Drawings
Fig. 1 is a schematic structural diagram of a hub bearing axial play measuring machine according to an embodiment of the present invention.
Fig. 2 is a cross-sectional view of the hub bearing to be measured in the hub bearing axial play measuring machine according to an embodiment of the present invention, as viewed in the radial direction.
Fig. 3 is a flowchart of a measurement method according to an embodiment of the invention.
Detailed Description
In order to facilitate a better understanding of the invention, the invention will be further explained below with reference to the accompanying drawings of embodiments. Embodiments of the present invention are shown in the drawings, but the present invention is not limited to the preferred embodiments described above. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
Axial play measuring machine embodiment:
referring to fig. 1 and 2, the axial clearance measuring machine for a hub bearing according to an embodiment of the present invention includes a base 1 and a workbench 2, the workbench 2 is disposed on the upper portion of the base 1, a positioning seat 3 is disposed on the workbench 2, an upper measuring assembly and a displacement sensor 4 are disposed on the workbench 2, and a lower measuring assembly is disposed inside the base 1. The positioning seat 3 is arranged between the upper measuring component and the lower measuring component, and the hub bearing 5 to be measured is arranged inside the positioning seat 3. Go up measuring component and include first working cylinder 6 and first driving motor 7, the output of first working cylinder 6 is provided with first piston rod 8, is provided with first pressure head 9 at the output of first piston rod 8, and first pressure head 9 is connected with the last inner circle 51 of wheel hub bearing 5 that awaits measuring. A first driving belt 10 is arranged at the output end of the first driving motor 7, the first driving belt is connected with the first pressing head 9, a first tensioning wheel 11 is arranged on the first driving belt 10, and the first tensioning wheel 11 is used for tensioning the first driving belt 10. The lower measuring assembly comprises a second working cylinder 12 and a second driving motor 13, a second piston rod 14 is arranged at the output end of the second working cylinder 12, and a second pressure head 15 is arranged at the output end of the second piston rod 14. The second pressure head 15 is connected with the lower inner ring 53 of the hub bearing 5 to be tested. A second belt 16 is arranged at the output end of the second driving motor 13, the second belt 16 is connected with the second ram 15, a second tension wheel 17 is arranged on the second belt 16, and the second tension wheel 17 is used for tensioning the second belt 16. The axial clearance measuring machine of the hub bearing further comprises a pressing assembly, the pressing assembly comprises a pressing cylinder 18 and a pressing plate 19, the pressing cylinder 18 is arranged on the upper surface of the workbench 2, the pressing plate 19 is arranged at the output end of the pressing cylinder 18, and the pressing plate 19 abuts against the outer ring 52 of the hub bearing 5 to be measured. The number of the pressing cylinders 18 and the pressing plates 19 is two, the two pressing cylinders 18 and the two pressing plates 19 are arranged in a one-to-one correspondence manner, and the two pressing cylinders 18 are respectively arranged on the left side and the right side of the positioning seat 3.
In this embodiment, the wheel hub bearing axial clearance measuring machine further includes a first connecting plate 20, the first connecting plate 20 is located above the workbench 2, support columns 21 are arranged between the first connecting plate 20 and the workbench 2, and the number of the support columns 21 is two and located on the left and right sides of the workbench 2 respectively. The first operating cylinder 6 is provided on the upper surface of the first connection plate 20. The wheel hub bearing axial clearance measuring machine further comprises a second connecting plate 22, the second connecting plate 22 is located between the first connecting plate 20 and the workbench 2, the first driving motor 7 is arranged on the second connecting plate 22, the first piston rod 8 is connected with the upper surface of the second connecting plate 22, the first pressure head 9 is connected with the lower surface of the second connecting plate 22, a guide rod 23 is arranged between the first piston rod 8 and the first driving motor 7, and a through hole (not shown in the figure) for the guide rod 23 to pass through is formed in the first connecting plate 20. After the first working cylinder 6 is started, the first piston rod 8 is pushed downwards to drive the whole second connecting plate 22 to move downwards. First driving motor 7 and first piston rod 8 are fixed respectively in the left and right sides of second connecting plate 22, because first driving motor 7's dead weight, can produce an ascending effort in first pressure head 9 department, this ascending effort can influence first pressure head 9 and to the effect of pushing down of wheel hub bearing 5 that awaits measuring, consequently set up guide bar 23 and can play balanced effect between first driving motor 7 and first piston rod 8, avoid the influence that first driving motor 7's dead weight brought to first pressure head 9.
In this embodiment, the hub bearing axial clearance measuring machine further comprises a lever mechanism, the lever mechanism comprises a lever seat 24 and a lever 25, one end of the lever 25 is connected with the displacement sensor 4, and the other end of the lever 25 is connected with the second piston rod 14. The lever seat 24 is arranged on the lower surface of the workbench 2, and the middle part of the lever 25 is hinged with the lever seat 24. The displacement sensor 4 is fixed to a sensor holder 32, and the sensor holder 32 is provided on the upper surface of the table 2.
In this embodiment, after the second driving motor 13 is started, the second piston rod 14 is pushed upwards to drive one end of the lever 25 connected to the second piston rod 14 to move upwards, the other end of the lever 25 connected to the displacement sensor 4 moves downwards to drive the displacement sensor 4 to move downwards, and the displacement sensor 4 can sense the position change of itself in the process. The lever 25 is an equal-arm lever, when the second piston rod 14 pushes the second pressure head 15 to press the lower inner ring 53 to the limit position, the upward pushing displacement of the second piston rod 14 is equal to the downward movement displacement of the displacement sensor 4, and the displacement acquired by the displacement sensor 4 is the upward movement axial displacement of the lower inner ring 53 of the hub bearing to be measured. Similarly, when the first driving motor 7 is started, the first piston rod 8 is pushed downwards, and when the first piston rod 8 pushes the first pressure head 9 to press the upper inner ring 51 of the hub bearing 5 to be measured downwards to the limit position, the downward movement displacement of the upper inner ring 51 is equal to the upward movement displacement of the displacement sensor 4. Through the lever mechanism, the displacement sensor 4 can more accurately measure the axial displacement amount of the bearing inner race.
In the present embodiment, an electronic display screen 26 is provided on the top of the first operating cylinder 6. After the displacement sensor 4 obtains the extreme axial displacement amount of the upward movement and the extreme axial displacement amount of the downward movement of the inner ring of the hub bearing to be measured, the axial clearance measurement value of the hub bearing to be measured can be obtained, and the axial clearance measurement value can be displayed on the electronic display screen 26. Still be provided with warning light 27 on the electronic display screen, when the axial play value that records surpassed the technical standard of the wheel hub bearing that awaits measuring, warning light 27 can light, and the suggestion should be awaited measuring the axial play value of wheel hub bearing and not up to standard.
Referring to fig. 1, a tool box 28, a solenoid valve 29, a relay 30, and a pressure reducing valve 31 are provided inside a base 2. The tool box 28 is used for placing work tools, such as wrenches, spare parts, etc. The operation of the whole hub bearing axial clearance measuring machine is controlled by a PLC control system, and the electromagnetic valve 29, the relay 30 and the pressure reducing valve 31 belong to auxiliary elements of the PLC control system, belong to the common technology of the technical personnel in the field, and are not described herein.
The embodiment of the measuring method comprises the following steps:
referring to fig. 3, the measurement method provided by the embodiment includes the following steps, firstly, step S1 is executed, and the hub bearing to be measured is placed in the positioning seat. Then, step S2 is executed to start the pressing assembly to press the outer ring of the hub bearing to be tested. Next, step S3 is executed to start the second driving motor and the second working cylinder, and when the start time reaches a first preset time, the second driving motor is turned off to obtain a first displacement of the displacement sensor. Next, step S4 is executed to start the first driving motor and the first working cylinder, where the pressure of the first working cylinder is twice the pressure of the second working cylinder, and when the start time reaches a second preset time, the second driving motor is turned off to obtain a second displacement of the displacement sensor. Finally, step S5 is executed to obtain an axial play value, which is a difference between the first displacement amount and the second displacement amount.
Referring to fig. 2 and 3, in the process of executing step S4, the pressure of the first working cylinder 6 is twice the pressure of the second working cylinder 12, so that the pressure of the pressing-down needs to be first offset by the pressure of the pressing-up of the second working cylinder 12 during the pressing-down of the first working cylinder 6, and then the value of the pressing-down force applied to the upper inner ring 51 is equal to the value of the pressing-down force applied to the lower inner ring 53. In the process of executing step S3 and step S4, the rotation of the inner ring of the hub bearing to be measured needs to be maintained, so that the rollers 54 are allowed to run in during the axial movement of the inner ring of the bearing, the rollers 54 are allowed to run in the optimal position, and the rollers 54 are prevented from being stuck with the inner ring during the axial movement of the inner ring of the bearing, so that the bearing cannot work normally, and the correct play value cannot be measured.
In the present embodiment, in the process of executing step S3, the first preset time is 60 seconds, after the second working cylinder 12 is started, the second piston rod 14 is pushed upward to push the lower inner ring 53 upward to move axially, and after 60 seconds of starting, the lower inner ring 53 is already attached to the upper inner ring 51, and at this time, the displacement sensor obtains the limit displacement amount of the upward movement of the lower inner ring 53, that is, the first displacement amount. In the process of executing step S4, the second preset time is 60 seconds, after the first working cylinder 6 is activated, the first piston rod 8 is pushed downward to push the upper inner ring 51 to move downward axially, and after 60 seconds of activation, the upper inner ring 51 has moved downward to the extreme position, and at this time, the displacement sensor obtains the extreme displacement amount of the downward movement of the upper inner ring 51, that is, the second displacement amount. In the process of executing step S5, the difference between the first displacement amount and the second displacement amount is the axial play value, and the measured axial play value is displayed on the electronic display screen 26.
The above-described embodiments describe the technical principles of the present invention, and these descriptions are only for the purpose of explaining the principles of the present invention and are not to be construed as limiting the scope of the present invention in any way. Based on the explanations herein, those skilled in the art will be able to conceive of other embodiments of the present invention without inventive effort, which would fall within the scope of the present invention.
Claims (10)
1. The utility model provides a wheel hub bearing axial play measuring machine, includes measuring subassembly, workstation, measuring subassembly and base down, the workstation sets up the upper portion of base be provided with the positioning seat on the workstation, compress tightly subassembly and displacement sensor, go up measuring subassembly with displacement sensor sets up the workstation top, lower measuring subassembly sets up the inside of base, the positioning seat sets up last measuring subassembly with between the measuring subassembly down, the wheel hub bearing that awaits measuring is placed inside the positioning seat, its characterized in that:
the upper measuring assembly comprises a first working cylinder and a first driving motor, a first piston rod is arranged at the output end of the first working cylinder, a first pressure head is arranged at the output end of the first piston rod, the first pressure head is connected with the upper inner ring of the hub bearing to be measured, and the first driving motor is in transmission connection with the first pressure head and used for driving the first pressure head to rotate;
the lower measuring assembly comprises a second working cylinder and a second driving motor, a second piston rod is arranged at the output end of the second working cylinder, a second pressure head is arranged at the output end of the second piston rod, the second pressure head is connected with the lower inner ring of the hub bearing to be measured, and the second driving motor is in transmission connection with the second pressure head and used for driving the second pressure head to rotate;
the axial clearance measuring machine of the hub bearing further comprises a pressing component, and the pressing component is used for pressing the outer ring of the hub bearing to be measured;
and the displacement sensor is connected with the second piston rod and used for acquiring the axial displacement of the inner ring of the hub bearing to be detected.
2. The hub bearing axial play measuring machine according to claim 1, characterized in that:
the compressing assembly comprises a compressing cylinder and a compressing plate, the compressing cylinder is arranged on the upper surface of the workbench, the compressing plate is arranged at the output end of the compressing cylinder, and the compressing plate is abutted to the outer ring of the hub bearing to be detected.
3. The hub bearing axial play measuring machine according to claim 2, characterized in that:
the number of the compression cylinders and the compression plates is two, the two compression cylinders and the two compression plates are arranged in a one-to-one correspondence mode, and the two compression cylinders are arranged on the left side and the right side of the positioning seat respectively.
4. The hub bearing axial play measuring machine according to claim 1, characterized in that:
the wheel hub bearing axial clearance measuring machine further comprises a first connecting plate, the first connecting plate is located above the workbench, a supporting column is arranged between the first connecting plate and the workbench, and a first working cylinder is arranged on the upper surface of the first connecting plate.
5. The hub bearing axial play measuring machine according to claim 4, characterized in that:
the wheel hub bearing axial clearance measuring machine further comprises a second connecting plate, the second connecting plate is located between the first connecting plate and the workbench, the first driving motor is arranged on the second connecting plate, the first piston rod is connected with the upper surface of the second connecting plate, the first pressure head is connected with the lower surface of the second connecting plate, the first piston rod is connected with a guide rod arranged between the first driving motor, and a through hole for the guide rod to pass through is formed in the first connecting plate.
6. The hub bearing axial play measuring machine according to claim 5, characterized in that:
the output end of the first driving motor is provided with a first transmission belt, the first transmission belt is connected with the first pressure head, the first transmission belt is provided with a first tensioning wheel, and the first tensioning wheel is used for tensioning the first transmission belt.
7. The hub bearing axial play measuring machine according to claim 6, characterized in that:
and a second driving belt is arranged at the output end of the second driving motor and is connected with the second pressure head, and a second tensioning wheel is arranged on the second driving belt and is used for tensioning the second driving belt.
8. The hub bearing axial play measuring machine according to any one of claims 1 to 7, characterized in that:
the wheel hub bearing axial clearance measuring machine further comprises a lever mechanism, the lever mechanism comprises a lever seat and a lever, one end of the lever is connected with the displacement sensor, the other end of the lever is connected with the second piston rod, the lever seat is arranged on the lower surface of the workbench, and the middle of the lever is hinged to the lever seat.
9. The hub bearing axial play measuring machine according to any one of claims 1 to 7, characterized in that:
and an electronic display screen is arranged at the top of the first working cylinder.
10. A measuring method of a hub bearing axial play measuring machine applied to the hub bearing axial play measuring machine according to claim 1, characterized by comprising the steps of:
placing the hub bearing to be tested in the positioning seat;
starting a pressing assembly to press the outer ring of the hub bearing to be tested;
starting the second driving motor and the second working cylinder, and when the starting time reaches a first preset time, closing the second driving motor to obtain a first displacement of the displacement sensor;
starting the first driving motor and the first working cylinder, wherein the pressure of the first working cylinder is twice that of the second working cylinder, and when the starting time reaches a second preset time, the second driving motor is closed to obtain a second displacement of the displacement sensor;
and acquiring an axial play value, wherein the axial play value is the difference value between the first displacement and the second displacement.
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| CN202011182350.6A CN112284322A (en) | 2020-10-29 | 2020-10-29 | Hub bearing axial clearance measuring machine and measuring method thereof |
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| CN202011182350.6A CN112284322A (en) | 2020-10-29 | 2020-10-29 | Hub bearing axial clearance measuring machine and measuring method thereof |
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| CN113465566A (en) * | 2021-07-22 | 2021-10-01 | 济南易恒技术有限公司 | Commercial vehicle hub unit negative clearance detection method and automatic detection equipment |
| CN113483713A (en) * | 2021-06-30 | 2021-10-08 | 人本股份有限公司 | Bearing tool for detecting axial clearance of rolling bearing |
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| CN113251900A (en) * | 2021-05-26 | 2021-08-13 | 山东易斯特工程工具有限公司 | Shield constructs hobbing cutter tapered roller bearing play measuring equipment |
| CN113483713A (en) * | 2021-06-30 | 2021-10-08 | 人本股份有限公司 | Bearing tool for detecting axial clearance of rolling bearing |
| CN113465566A (en) * | 2021-07-22 | 2021-10-01 | 济南易恒技术有限公司 | Commercial vehicle hub unit negative clearance detection method and automatic detection equipment |
| CN114370839A (en) * | 2022-03-22 | 2022-04-19 | 潍坊埃锐制动系统有限公司 | Detection tool for tapered bearing clearance of brake drum assembly |
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| CN114923451A (en) * | 2022-05-25 | 2022-08-19 | 海宁奥通汽车零件有限公司 | Conical hub unit clearance detection and assembly equipment and detection method |
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| CN115235782A (en) * | 2022-09-21 | 2022-10-25 | 中国航发上海商用航空发动机制造有限责任公司 | Turbine rotor stator axial collision and abrasion detection device and method |
| CN115235782B (en) * | 2022-09-21 | 2023-01-13 | 中国航发上海商用航空发动机制造有限责任公司 | Turbine rotor stator axial collision and abrasion detection device and method |
| CN117606420A (en) * | 2024-01-22 | 2024-02-27 | 湖南星创智能装备有限公司 | Axial clearance detection device and equipment of motor |
| CN117606420B (en) * | 2024-01-22 | 2024-04-26 | 湖南星创智能装备有限公司 | Axial clearance detection device and equipment of motor |
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