CN115682882A - Bearing clearance measuring device and method - Google Patents
Bearing clearance measuring device and method Download PDFInfo
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- CN115682882A CN115682882A CN202211454036.8A CN202211454036A CN115682882A CN 115682882 A CN115682882 A CN 115682882A CN 202211454036 A CN202211454036 A CN 202211454036A CN 115682882 A CN115682882 A CN 115682882A
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Abstract
The invention discloses a bearing clearance measuring device and a measuring method, the device comprises a base, a mandrel, a jacking device, a gasket, a fastening bolt, a magnetic gauge stand and dial gauges, wherein the base is arranged on a workbench, the mandrel penetrates through a bearing inner ring, the bearing inner ring is fixed on the mandrel by using the fastening bolt, the mandrel penetrates through a central through hole on the upper surface of the base and is matched with the gasket to clamp the bottom of the bearing outer ring on a step hole, a groove is arranged along a diagonal line, one end of the jacking device is clamped and embedded in the groove, the other end of the jacking device is tightly pressed on the upper surface of the bearing outer ring, the two magnetic gauge stands are respectively adsorbed on the upper surface of the base, the two dial gauges are fixed on the magnetic gauge stand and are respectively vertical to and parallel to the axis of the mandrel, and the two measuring ends are respectively contacted with the top and the side surface of the fastening bolt and are used for measuring the moving amount of the mandrel. The device has the characteristics of simple process, lower cost and convenient clamping, can quickly realize the measurement work of the radial clearance and the axial clearance of the bearing, and obviously improves the measurement efficiency.
Description
Technical Field
The invention belongs to the technical field of detection, and relates to a device and a method for verifying a clearance value of an inner ring and an outer ring of a ball bearing.
Background
The bearing is one of the most important parts in modern mechanical equipment, is widely applied to the industries of aerospace, automobiles, ships, wind power and the like, and has the main functions of supporting a mechanical rotating body, reducing the friction coefficient in the motion process of the mechanical rotating body and ensuring the rotation precision of the mechanical rotating body. The bearing generally comprises an inner ring, an outer ring, a rolling body and a retainer, and a certain gap, called as a bearing clearance, exists between the assembled inner ring and the assembled outer ring of the bearing. The bearing clearance is a key important parameter influencing the fatigue life and the performance of the bearing, and the bearing clearance detection accuracy is directly related to the safety, the performance and the reliability of equipment. The bearing play is divided into radial play and axial play according to the direction of the clearance. At present, two types of measuring methods for bearing clearance are mainly adopted, one type is a method for measuring by using a feeler gauge, and the method is low in detection precision and poor in repeatability and cannot accurately quantify the bearing clearance value. The other mode is that a clearance measuring instrument is adopted, a special clamping tool needs to be manufactured for bearings of various specifications and sizes, the bearings are clamped on the axial clearance measuring instrument through the special clamping tool and then are disassembled and then are clamped on the radial play instrument for measurement, and the measuring process needs to be carried out twice clamping, twice disassembling and twice measuring, so that the measuring method is high in cost and low in efficiency. Therefore, a device and a method for simply, conveniently and quickly measuring the bearing clearance value need to be designed, so that the bearing clearance is quickly measured, the accuracy of measuring the bearing clearance value is ensured, and the aims of low cost and high efficiency are fulfilled.
Disclosure of Invention
In order to solve the problems, the invention designs a device and a method for verifying and measuring the clearance of the bearing, designs an adjustable jacking device, realizes the clamping of the bearings with different specifications by matching with gaskets and fastening bolts with different specifications, and realizes the clamping on one set of device only once by changing the placing direction of the device and measuring the displacement of a mandrel through a dial indicator, thus completing the measurement of two clearance values of radial clearance and bearing clearance.
The utility model provides a bearing play measuring device, the on-line screen storage device comprises a base, the dabber, the roof pressure device, the packing ring, fastening bolt, two magnetic gauge stand, two percentage tables, the workstation is arranged in to the base, the base is positive cubic hollow cavity structure, base upper surface center system has the step through-hole with dabber complex, the dabber passes the bearing inner circle, fix the bearing inner circle at the dabber through fastening bolt, the dabber passes the step through-hole, and cooperate the packing ring with bearing outer lane bottom card on the step through-hole, be equipped with the recess of two sections installation roof pressure devices along base upper surface diagonal, in the wall of the base upper surface inlay card recess, the other end compresses tightly at bearing outer lane upper surface, fix the bearing outer lane on the base, the inner circle is fixed at the dabber, two magnetic gauge stand adsorb respectively on base upper surface recess both sides, two percentage tables are fixed on the magnetic gauge stand and respectively perpendicular and be on a parallel with the dabber axis, two measuring ends contact with fastening bolt's top and side respectively, be used for measure the amount of movement of dabber. .
Furthermore, the mandrel is of a step structure, the diameter of the front end of the mandrel is smaller than the inner diameter of the bearing inner ring and is provided with an internal thread, the diameter of the rear end of the mandrel is larger than the outer diameter of the bearing inner ring, the front end of the mandrel penetrates through the bearing inner ring to clamp the bearing at the step position of the rear end of the mandrel, and the fastening bolt is matched with the internal thread of the front end of the mandrel to fix the bearing inner ring on the mandrel.
Further, the jacking device comprises a limiting seat, an adjusting shifting sheet, a pressing rod and a pressing thimble, the bottom end of the limiting seat is clamped and embedded in a groove of the base, the adjusting shifting sheet is arranged at the top of the limiting seat, one end of the pressing rod is connected with the adjusting shifting sheet, the other end of the pressing rod is fixed with the pressing thimble, the adjusting shifting sheet is pressed downwards, the pressing rod is pushed to the limiting position by the adjusting shifting sheet, the pressing thimble is pressed downwards, and the bearing outer ring is jacked. The pressing thimble is designed to be of a threaded structure, and pressing force can be adjusted by rotating the pressing thimble after pressing.
A bearing clearance measuring method is used for measuring bearing clearance, and comprises the following specific steps:
1, a mandrel penetrates through an inner ring of a bearing to be measured, the inner ring is clamped at a step of the mandrel, and a fastening bolt is arranged on an internal threaded hole at the front end of the mandrel and is screwed until the inner ring of the bearing is completely fixed on the mandrel;
2, placing a gasket with the same inner diameter as the outer ring of the measured bearing on a step hole on the upper surface of the base, placing a mandrel provided with the measured bearing through a central hole, and clamping the outer diameter of the bearing on the gasket of the step hole of the base;
3, the jacking device moves along the groove, the proper position capable of compressing the outer ring of the bearing is adjusted, the adjusting shifting piece is pressed downwards, the compression thimble compresses the outer ring of the bearing, and the bearing is fixed on the base.
4, respectively installing the two dial indicators on the magnetic indicator base to enable the two dial indicators to be respectively vertical to and parallel to the axis of the mandrel, enabling the measuring end of the dial indicator parallel to the axis of the mandrel to be in contact with the top end of the fastening bolt, zeroing the dial indicator after the installation is finished, enabling the measuring end of the dial indicator vertical to the axis of the mandrel to be in contact with the side surface of the fastening bolt, and zeroing the dial indicator after the installation is finished;
5, placing the mounted device on a horizontal working table, rotating and moving the mandrel up and down by a measurer to enable the bearing inner ring to move up and down in a rotating state, observing and recording the maximum measurement value of the dial indicator parallel to the axis of the mandrel, namely the axial clearance value of the bearing;
6 after the axial clearance measurement is finished, rotating the base of the device clockwise by 90 degrees and then placing the base on a horizontal working table surface, enabling a dial indicator arranged perpendicular to the axis of the mandrel to be in a vertical state, rotating a measurer and moving the mandrel up and down, enabling the inner ring of the bearing to move up and down in a rotating state, observing and recording the maximum measurement value of the dial indicator perpendicular to the axis of the mandrel, wherein the maximum measurement value is the radial clearance value of the bearing;
and 7, after the data recording is finished, restoring the original placing position of the device, dismounting the dial indicator, lifting the adjusting shifting sheet of the jacking device, loosening the compression thimble, taking out the mandrel from the base, dismounting the bearing and finishing the measurement.
The invention has the beneficial effects that: the device solves the problem that one set of device completes the measurement work of the radial clearance and the axial clearance by one-time clamping through a method of changing the placing direction, and greatly improves the measurement efficiency of the clearance value of the bearing. When the device is placed in the forward direction, the mandrel is rotated and moved up and down, the movement amount of the mandrel is measured by the dial indicator, the measurement of the axial clearance of the bearing is realized, and at the moment, even if the movement amount exists in the horizontal direction, the measurement result of the axial clearance value is not influenced. After the axial measurement is finished, the device is rotated by 90 degrees clockwise and placed, the mandrel is rotated and moved up and down, the displacement of the mandrel is measured by using another dial indicator, the measurement of the radial clearance of the bearing is realized, and at the moment, even if the movement amount in the horizontal direction does not influence the measurement result of the radial clearance value.
The invention provides a device and a method for measuring bearing clearance.A designed mandrel can be matched with fastening bolts with different specifications to clamp bearing inner rings with different specifications and inner diameters, and the motion displacement of the mandrel represents the displacement of the bearing inner rings. The designed base is matched with the jacking device and the gasket to fix the bearing outer ring, and the jacking position of the jacking device can be adjusted according to the specification of the bearing outer ring. Two percentage tables are fixed on the base through the magnetic gauge stand, and the measuring end of the percentage table is in contact with the mandrel, so that the mandrel displacement is measured. The device has the characteristics of simple process, lower cost and convenient clamping, can quickly realize the measurement work of the radial clearance and the axial clearance of the bearing, and obviously improves the measurement efficiency.
Drawings
FIG. 1 shows an overall structure of a bearing play measuring apparatus
FIG. 2 structure diagram of a top pressing device of a bearing clearance measuring device
FIG. 3 structure diagram of mandrel structure of bearing play measuring device
FIG. 4 is a diagram of a bearing axial clearance measurement method
FIG. 5 radial play measurement method diagram of bearing
The numbering in the figures illustrates: 1. a base; 2. fastening a bolt; 3. compressing the thimble; 4. a hold down bar; 5. adjusting the shifting piece; 6. a limiting seat; 7. a bearing; 8. a magnetic gauge stand; 9. a mandrel; 10. a gasket; 11. a dial indicator;
Detailed Description
The present invention will be described in further detail below with reference to specific embodiments.
As shown in fig. 1-3, a bearing clearance measuring device includes a base 1, a fastening bolt 2, a pressing thimble 3, a pressing rod 4, an adjusting plectrum 5, a limiting seat 6, two magnetic force gauge seats 8, a mandrel 9, a gasket 10, and two dial indicators 11, wherein the base 1 is arranged on a workbench, the base 1 is of a square hollow cavity structure, a step through hole matched with the mandrel 9 is formed in the center of the upper surface of the base 1, the mandrel 9 penetrates through an inner ring of the bearing 7, the inner ring of the bearing 7 is fixed on the mandrel 9 by using the fastening bolt 2, the mandrel 9 penetrates through the step through hole of the base 1 and is matched with the gasket 10 to clamp the bottom of the outer ring of the bearing 7 on the step through hole, two grooves for installing the abutting device are arranged on the upper surface of the base along a diagonal line, the limiting seat 6 of the abutting device is clamped in the grooves, the pressing thimble 3 is pressed on the upper surface of the outer ring of the bearing 7, so that the outer ring of the bearing 7 is fixed on the base 1, the inner ring of the mandrel is fixed on the mandrel 9, the two magnetic force gauge seats 8 are respectively adsorbed on two sides of the grooves on the upper surface of the base 1, the magnetic force gauge seats 8 and are respectively fastened to be respectively perpendicular to be contacted with the bolt 9, and to measure the side surfaces of the bolt 2, and to measure the top of the two sides of the bolt 2.
The mandrel 9 is of a step structure, the diameter of the front end of the mandrel is smaller than the inner diameter of the bearing inner ring and is provided with an internal thread, the diameter of the rear end of the mandrel is larger than the outer diameter of the bearing inner ring, the front end of the mandrel penetrates through the inner ring of the bearing 7 to clamp the bearing at the step position of the rear end of the mandrel 9, and the fastening bolt 2 is matched with the internal thread at the front end of the mandrel 9 to fix the bearing inner ring on the mandrel.
The tight device in top includes spacing seat 6, adjusts plectrum 5, pressing rod 4, compresses tightly thimble 3, and 6 bottom inlay cards of spacing seat are in the recess of base, adjusts plectrum 5 and takes at 6 tops of spacing seat, and 4 one ends of pressing rod are connected with adjusting plectrum 5, and the other end is fixed to be compressed tightly thimble 3, pushes down and adjusts plectrum 5, and adjust plectrum 5 will press rod 4 and push away to spacing department, compresses tightly thimble 3 and pushes down, the tight bearing 7 outer lane in top. The pressing thimble 3 is designed to be of a thread structure, and the pressing force can be adjusted by rotating the pressing thimble after the pressing.
As shown in fig. 4-5, a method for measuring bearing play by using the measuring device comprises the following steps:
1, a mandrel 9 penetrates through an inner ring of a bearing 7 to be measured, the inner ring is clamped at a step of the mandrel 9, and a fastening bolt 2 is arranged on an internal thread hole at the front end of the mandrel 9 and is screwed until the inner ring of the bearing 7 is completely fixed on the mandrel;
2, placing a gasket 10 with the same inner diameter as the outer ring of the tested bearing 7 on a step hole on the upper surface of the base 1, placing a mandrel 9 provided with the tested bearing through a central hole, and clamping the outer diameter of the bearing on the gasket of the step hole of the base;
3 the jacking device moves along the groove, the jacking device is adjusted to a proper position capable of pressing the outer ring of the bearing, the adjusting shifting piece 5 is pressed downwards, the pressing thimble 3 presses the outer ring of the bearing, and the bearing is fixed on the base.
4, respectively installing two dial indicators 11 on a magnetic indicator base 8, enabling the two dial indicators to be respectively vertical to and parallel to the axis of the mandrel, enabling the measuring ends of the dial indicators parallel to the axis of the mandrel to be in contact with the top end of the fastening bolt, zeroing the dial indicators after the installation is finished, enabling the measuring ends of the dial indicators vertical to the axis of the mandrel to be in contact with the side surface of the fastening bolt, and zeroing the dial indicators after the installation is finished;
5, placing the mounted device on a horizontal working table, rotating and moving the mandrel 9 up and down by a measurer, moving the inner ring of the bearing 7 up and down in a rotating state, observing and recording the maximum measurement value of a dial indicator parallel to the axis of the mandrel 9, namely the axial play value of the bearing;
6 after the axial clearance measurement is finished, rotating the base of the device clockwise by 90 degrees and then placing the base on a horizontal working table surface, enabling a dial indicator arranged perpendicular to the axis of the mandrel to be in a vertical state, rotating a measurer and moving the mandrel 9 up and down, enabling the inner ring of the bearing 7 to move up and down in a rotating state, observing and recording the maximum measurement value of the dial indicator perpendicular to the axis of the mandrel, namely the radial clearance value of the bearing;
and 7, after the data recording is finished, restoring the original placing position of the device, dismounting the dial indicator, lifting the adjusting shifting piece 5 of the jacking device, loosening the compression thimble 3, taking out the mandrel 9 from the base 1, dismounting the bearing 7 and finishing the measurement.
Claims (4)
1. A bearing clearance measuring device is characterized by comprising a base, a mandrel, a jacking device, a gasket, a fastening bolt, two magnetic force gauge bases and two dial indicators, wherein the base is arranged on a workbench and is of a square hollow cavity structure, a step through hole matched with the mandrel is formed in the center of the upper surface of the base, the mandrel penetrates through a bearing inner ring, the bearing inner ring is fixed on the mandrel through the fastening bolt, the mandrel penetrates through the step through hole and is matched with the gasket to clamp the bottom of a bearing outer ring on the step through hole, two grooves for mounting the jacking device are formed in the diagonal line of the upper surface of the base, one end of the jacking device is clamped and embedded in the groove, the other end of the jacking device is tightly pressed on the upper surface of the bearing outer ring, the bearing outer ring is fixed on the base, the inner ring is fixed on the mandrel, the two magnetic force gauge bases are respectively adsorbed on two sides of the groove in the upper surface of the base, the two dial indicators are fixed on the magnetic force gauge bases and are respectively vertical to and parallel to the axis of the mandrel, and two measuring ends are respectively contacted with the top and the side surface of the fastening bolt for measuring the movement amount of the mandrel.
2. The bearing play measuring device of claim 1, wherein the mandrel has a stepped structure, a diameter of a front end of the mandrel is smaller than an inner diameter of the bearing inner race and is provided with an internal thread, a diameter of a rear end of the mandrel is larger than an outer diameter of the bearing inner race, the front end of the mandrel penetrates through the bearing inner race to clamp the bearing at the step of the rear end of the mandrel, and the fastening bolt is matched with the internal thread of the front end of the mandrel to fix the bearing inner race on the mandrel.
3. The bearing clearance measuring device according to claim 1, characterized in that the tightening device comprises a limiting seat, an adjusting plectrum, a pressing rod and a pressing thimble, the bottom end of the limiting seat is embedded in a groove of the base, the adjusting plectrum is lapped on the top of the limiting seat, one end of the pressing rod is connected with the adjusting plectrum, the other end of the pressing rod fixes the pressing thimble, the adjusting plectrum is pressed downwards, the pressing rod is pushed to a limiting position by the adjusting plectrum, the pressing thimble is pressed downwards, and the bearing outer ring is tightened. The pressing thimble is designed to be of a threaded structure, and pressing force can be adjusted by rotating the pressing thimble after pressing.
4. A bearing play measuring method is characterized in that the bearing play measuring device of claim 1 is used for measuring the bearing play, and the method comprises the following specific steps:
4-1, the mandrel penetrates through the inner ring of the bearing to be measured, the inner ring is clamped at the step of the mandrel, and a fastening bolt is arranged on an internal thread hole at the front end of the mandrel and is screwed until the inner ring of the bearing is completely fixed on the mandrel;
4-2, placing a gasket with the same inner diameter as the outer ring of the measured bearing on a step hole on the upper surface of the base, placing a mandrel provided with the measured bearing through a central hole, and clamping the outer diameter of the bearing on the gasket of the step hole of the base;
4-3, moving the jacking device along the groove, adjusting to a proper position capable of pressing the outer ring of the bearing, pressing the adjusting shifting piece downwards, and pressing the ejector pin to press the outer ring of the bearing, so that the bearing is fixed on the base.
4-4, respectively installing the two dial indicators on a magnetic indicator base, enabling the two dial indicators to be respectively vertical to and parallel to the axis of the mandrel, enabling the measuring end of the dial indicator parallel to the axis of the mandrel to be in contact with the top end of the fastening bolt, zeroing the dial indicator after the installation is finished, enabling the measuring end of the dial indicator vertical to the axis of the mandrel to be in contact with the side surface of the fastening bolt, and zeroing the dial indicator after the installation is finished;
4-5, placing the mounted device on a horizontal working table, rotating and moving the mandrel up and down by a measurer to enable the inner ring of the bearing to move up and down in a rotating state, observing and recording the maximum measurement value of the dial indicator parallel to the axis of the mandrel, namely the axial clearance value of the bearing;
4-6, after the axial clearance measurement is finished, rotating the base of the device clockwise by 90 degrees and then placing the base on a horizontal working table surface, enabling the dial indicator which is arranged perpendicular to the axis of the mandrel to be in a vertical state, rotating a measurer and moving the mandrel up and down, enabling the inner ring of the bearing to move up and down in a rotating state, observing and recording the maximum measurement value of the dial indicator which is perpendicular to the axis of the mandrel, namely the radial clearance value of the bearing;
and 4-7, after the data recording is finished, restoring the original placing position of the device, dismounting the dial indicator, lifting the adjusting shifting sheet of the jacking device, loosening the pressing thimble, taking out the mandrel from the base, dismounting the bearing and finishing the measurement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211454036.8A CN115682882A (en) | 2022-11-18 | 2022-11-18 | Bearing clearance measuring device and method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211454036.8A CN115682882A (en) | 2022-11-18 | 2022-11-18 | Bearing clearance measuring device and method |
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| Publication Number | Publication Date |
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| CN115682882A true CN115682882A (en) | 2023-02-03 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202211454036.8A Pending CN115682882A (en) | 2022-11-18 | 2022-11-18 | Bearing clearance measuring device and method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116558387A (en) * | 2023-07-05 | 2023-08-08 | 成都航利航空科技有限责任公司 | Rapid detection device and method for welding position of stator assembly blade of air compressor |
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2022
- 2022-11-18 CN CN202211454036.8A patent/CN115682882A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116558387A (en) * | 2023-07-05 | 2023-08-08 | 成都航利航空科技有限责任公司 | Rapid detection device and method for welding position of stator assembly blade of air compressor |
| CN116558387B (en) * | 2023-07-05 | 2023-09-12 | 成都航利航空科技有限责任公司 | Rapid detection device and method for welding position of stator assembly blade of air compressor |
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