CN108414229B - Automatic wear life testing machine for deep groove ball bearings - Google Patents

Automatic wear life testing machine for deep groove ball bearings Download PDF

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Publication number
CN108414229B
CN108414229B CN201810417871.1A CN201810417871A CN108414229B CN 108414229 B CN108414229 B CN 108414229B CN 201810417871 A CN201810417871 A CN 201810417871A CN 108414229 B CN108414229 B CN 108414229B
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China
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oil
bearing
deep groove
groove ball
workbench
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CN201810417871.1A
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CN108414229A (en
Inventor
余光伟
吴瑞
姚远
扶林
吴亮亮
赵婷
沈彩怡
王晴
李银为
方党生
夏炜
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Beijing Transpacific Technology Development Ltd
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Beijing Transpacific Technology Development Ltd
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    • GPHYSICS
    • G01MEASURING; TESTING
    • G01MTESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
    • G01M13/00Testing of machine parts
    • G01M13/04Bearings
    • G01M13/045Acoustic or vibration analysis
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/02Details
    • GPHYSICS
    • G01MEASURING; TESTING
    • G01NINVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
    • G01N3/00Investigating strength properties of solid materials by application of mechanical stress
    • G01N3/56Investigating resistance to wear or abrasion

Abstract

The invention relates to an automatic deep groove ball bearing wear life testing machine which comprises a rack, an axial pneumatic loading device, a driving system, a motor base, a locking bolt, a support leg, a motor, an oil lubricating system, a heating device, an industrial personal computer, a charge amplifier, a sensor, a sound box and a data acquisition and control system. The invention has adjustable rotating speed and load, and is particularly suitable for vibration measurement and wear life test of micro and small deep groove ball bearings. The method can measure a plurality of vibration parameters (effective values, peak value factors, pulse numbers and the like of low frequency, medium frequency, high frequency and pass frequency) of the bearing, can set a vibration threshold value, and when the measured vibration value exceeds the set vibration threshold value, the bearing is considered to reach the wear life, and the wear life test machine can be automatically shut down, so that the safety is ensured.

Description

Automatic wear life testing machine for deep groove ball bearings
Technical Field
The invention relates to an automatic testing machine for the wear life of a deep groove ball bearing, and belongs to the field of mechanical design and manufacturing.
Background
The deep groove ball bearing is a bearing product which is widely applied in industry, consists of an outer ring, an inner ring, a rolling body and a retainer, and has good starting performance and bearing capacity; the motor is widely applied to the fields of automobiles, motors, engineering machinery and the like. Low vibration, ultra silent bearings have gradually become the trend in the market, and deep groove ball bearings used in air conditioners, refrigerators, washing machines and other devices should maintain low vibration and low noise for a long time to avoid discomfort to workers in the working environment. How to measure the time for which the bearing maintains low vibration and low noise has become an important issue in the bearing industry. Since the bearings used in these applications are generally subjected to a small load and generally do not suffer from fatigue failure, the time for which the bearings maintain low vibration and low noise is the wear life. However, at present, no complete testing machine integrating vibration measurement and wear life research is available at home and abroad. At present, the method for measuring the time for keeping low vibration and low noise of a bearing is generally that a deep groove ball bearing is placed in a high-temperature high-speed test box and operates under the action of high temperature and certain axial load; and taking out the bearing after running for a period of time, carrying out vibration measurement on the vibration measuring instrument and recording data. The disadvantages of this method are that manual intervention is required, the efficiency is low, the measurement parameters are few, the measurement intervals are not uniform, and the measurement results are not accurate enough.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an automatic deep groove ball bearing wear life testing machine which is stable in performance, axially loaded and convenient to use. The invention integrates loading test and vibration measurement, has complete measurement parameters, uniform recorded data interval and accurate measurement result, and can automatically shut down when reaching the set abrasion condition.
In order to achieve the purpose, the invention adopts the following technical scheme:
an automatic deep groove ball bearing wear life testing machine comprises a rack, a motor base, an axial loading device, an industrial personal computer, a charge amplifier, a sound box, an acceleration sensor locking mechanism, a sleeve, a vibration transmission rod, an oil lubrication inlet, a driving system, an electric appliance mounting plate, a workbench, a motor, an oil tank and support legs, wherein the axial loading device is arranged on the upper side and the rightmost side of the workbench and aligned with a main shaft; the motor base is arranged on the lower side of the workbench; the industrial personal computer, the charge amplifier and the sound box are arranged on an upper supporting plate of the workbench; the industrial personal computer, the charge amplifier and the sound box are connected through signal lines; the locking mechanism of the acceleration sensor is arranged vertically above the driving system and used for fixing the sensor used for the test; the sleeve and the vibration transmission rod are fixed above the vertical direction of the mandrel through an acceleration sensor locking mechanism; the motor is fixed above the motor base, and the rotating speed of the motor is controlled by adopting direct current speed regulation; the oil lubrication inlet is arranged on the right side of the driving system and used for lubricating the driving system; the driving system is arranged on the working platform; the electric appliance mounting plate is placed below the workbench; the oil tank is arranged below the testing machine, and the lubricating oil is conveyed to the oil lubricating inlet through the oil pump; the support legs are installed at the bottom of the rack through threaded connection.
The driving system comprises a mandrel, a main shaft, a right end cover, a thrust bearing, a right three-oil-blade bearing, a base, a left three-oil-blade bearing, a left end cover, a thrust bearing, a belt wheel and an oil groove; the mandrel is pressed in the conical hole of the spindle through pressure; the main shaft is supported on the base through a left end cover, a right end cover, a thrust bearing, a left oil vane bearing and a right oil vane bearing to rotate, and the left end cover, the right end cover and the thrust bearing are connected with the base through bolts; the left oil vane bearing and the right oil vane bearing are axially positioned through positioning pins and support the main shaft to do rotary motion; the belt wheel is fixed at the left end of the main shaft through a screw, the main shaft is driven to rotate through belt transmission, and the oil groove is designed inside the base and used for lubricating the whole main shaft.
The device comprises a heating device, a temperature setting device and a control device, wherein the heating device mainly comprises a heating box, a deep groove ball bearing, a heater hardware device and the temperature setting device; the heating box is assembled with the deep groove ball bearing through a round hole, and heats the deep groove ball bearing; the heater hardware device heats the heating box according to the temperature value set by the temperature setting device, and the whole heating device is horizontally placed on the workbench.
The axial loading device mainly comprises an air filter, a pressure reducing valve, a reversing valve, an axial loading device fixing support, a loading head, an adjustable support, a load rod, an air cylinder and a measuring hook; an inlet P of the reversing valve is connected with an outlet pipeline of the pressure reducing valve, and an inlet of the pressure reducing valve is connected with an outlet pipeline of the air filter; the inlet of the air filter is connected with the air inlet pipe; the front part and the rear part of the cylinder are respectively connected with an outlet A and an outlet B of the reversing valve; the measuring hook is fixedly connected to the right end of the cylinder piston rod through threads, so that the axial load can be accurately measured conveniently; the air cylinder is fixed on the workbench through a fixed support and is connected with the load rod through a piston rod in the air cylinder, the load rod axially moves through the adjustable support, and axial force is applied to the bearing outer ring through the loading head; the axial loading device fixing support is fixedly connected to the workbench through threads; the adjustable support is fixed on the fixed support of the axial loading device through threaded connection, and the stroke of the loading head is adjusted by adjusting the fixed position, so that the requirement of a rolling bearing abrasion life test is met.
Compared with the prior art, the invention has the beneficial effects that:
the invention has adjustable rotating speed and load, and is particularly suitable for vibration measurement and wear life test of micro and small deep groove ball bearings. The method can measure a plurality of bearing vibration parameters (effective values, peak factors, pulse numbers and the like of low frequency, medium frequency, high frequency and pass frequency); a vibration threshold value can be set, when the measured vibration value exceeds the set vibration threshold value, the bearing is considered to reach the abrasion service life, the abrasion service life test machine is automatically shut down, and the safety is ensured.
Drawings
FIG. 1 is a main view of an automatic deep groove ball bearing wear life tester.
FIG. 2 is a left side view of an automatic deep groove ball bearing wear life tester.
Fig. 3 is a schematic view of a drive system.
Fig. 4 is a schematic view of a heating device.
FIG. 5 is a schematic view of an axial loading device.
FIG. 6 is a schematic diagram of an automatic deep groove ball bearing wear life tester.
Detailed Description
The following further describes a specific embodiment of the present invention with reference to the drawings.
Referring to fig. 1 and 2, the automatic deep groove ball bearing wear life tester of the embodiment includes a rack 1, a motor base 2, an axial loading device 3, an industrial personal computer 4, a charge amplifier (lower) and a sound box (upper) 5, an acceleration sensor locking mechanism 6, a sleeve and a vibration transmission rod 7, an oil lubrication inlet 8, a driving system 9, a used electric appliance mounting plate 10, a workbench 11, a motor 12, an oil tank 13 and support legs 14, wherein the axial loading device 3 is arranged on the upper side and the rightmost side of the workbench 11 and aligned with a main shaft 16; the motor base 2 is arranged on the lower side of the workbench 11; the industrial personal computer 4, the charge amplifier and the sound box 5 are placed on an upper supporting plate of the workbench 11; the industrial personal computer 4, the charge amplifier and the sound box 5 are connected through a signal wire; the acceleration sensor locking mechanism 6 is arranged vertically above the driving system 9 and used for fixing a sensor used for a test; the sleeve and the vibration transmission rod 7 are fixed above the vertical direction of the mandrel 15 through an acceleration sensor locking mechanism 6; the motor 12 is fixed above the motor base 2, and the rotating speed of the motor is controlled by adopting direct current speed regulation; the oil lubrication inlet 8 is arranged on the right side of the driving system 9 and is used for lubricating the driving system 9; the driving system 9 is arranged on a working platform 11; the electric appliance mounting plate 10 is placed below the workbench 11; the oil tank 13 is arranged below the testing machine, and lubricating oil is conveyed to the oil lubricating inlet 8 through an oil pump; the legs 14 are mounted to the bottom of the frame 1 by a screw connection.
Referring to fig. 3, the driving system 9 of the present embodiment includes a spindle 15, a main shaft 16, a right end cap and thrust bearing 17, a right three-oil-vane bearing 18, a base 19, a left three-oil-vane bearing 20, a left end cap and thrust bearing 21, a pulley 22, and an oil groove 23; the mandrel 15 is pressed in a conical hole of the main shaft 16 by pressure; the main shaft 16 is supported on a base 19 to rotate through a left end cover, a right end cover and a thrust bearing 21, 17 and a left oil vane bearing 20, a right oil vane bearing 18, and the left end cover, the right end cover and the thrust bearing 21, 17 are connected with the base 19 through bolts; the left oil vane bearing 20 and the right oil vane bearing 18 are axially positioned through positioning pins and support the main shaft 16 to rotate; the belt wheel 22 is fixed at the left end of the main shaft 16 through a screw, the main shaft 16 is driven to rotate through belt transmission, and the oil groove 23 is designed in the base and used for lubricating the whole main shaft 16.
Referring to fig. 4, the heating device is also included, and mainly comprises a heating box 24, a deep groove ball bearing 25, a heater hardware device 26 and a temperature setting device 27; the heating box 24 is assembled with the deep groove ball bearing 25 through a circular hole, and heats the deep groove ball bearing 25; the heater hardware device 26 heats the heating box 24 according to the temperature value set by the temperature setting device 27, and the whole heating device is horizontally placed on the worktable 11.
Referring to fig. 5, the axial loading device 3 of the present embodiment mainly includes an air filter 28, a pressure reducing valve 29, a reversing valve 30, an axial loading device fixing support 31, a loading head 32, an adjustable support 33, a loading rod 34, an air cylinder 35 and a measuring hook 36; the inlet P of the reversing valve 30 is connected with an outlet pipeline of a pressure reducing valve 29, and the inlet of the pressure reducing valve 29 is connected with an outlet pipeline of the air filter 28; the inlet of the air filter 28 is connected with an air inlet pipe; the front part and the rear part of the cylinder 35 are respectively connected with an outlet A and an outlet B of the reversing valve 30; the measuring hook 36 is fixedly connected to the right end of the piston rod of the air cylinder 35 through threads, so that the axial load can be accurately measured; the cylinder 35 is fixed on the workbench 11 through a fixed support, and is connected with the load rod 34 through a piston rod in the cylinder, the load rod 34 axially moves through the adjustable support 33, and axial force is applied to the bearing outer ring through the loading head 32; the axial loading device fixing support 31 is fixed on the workbench 11 through threaded connection; the adjustable support 33 is fixed on the fixed support 31 of the axial loading device through threaded connection, and the stroke of the loading head 32 is adjusted through adjusting the fixed position, so that the requirement of a wear life test of the rolling bearing is met.
Referring to fig. 6, the charge amplifier is used for amplifying and low-pass filtering the electric signal picked up by the sensor, and the electric signal is sent to the industrial personal computer 4 through the data acquisition card. The charge amplifier is also provided with a monitoring circuit for monitoring the sound quality of the measuring bearing when necessary. The industrial personal computer 4 is provided with a program developed for a test, can calculate and display effective values, peak value factors and pulse numbers of vibration acceleration of low, medium and high frequency bands, can set time intervals, and automatically stores measurement data at regular time.

Claims (3)

1. An automatic deep groove ball bearing wear life testing machine is characterized by comprising a rack (1), a motor base (2), an axial loading device (3), an industrial personal computer (4), a charge amplifier, a sound box (5), an acceleration sensor locking mechanism (6), a sleeve, a vibration transmission rod (7), an oil lubricating inlet (8), a driving system (9), an electrical appliance mounting plate (10), a workbench (11), a motor (12), an oil tank (13) and support legs (14), wherein the axial loading device (3) is arranged on the upper side and the rightmost side of the workbench (11) and aligned with a main shaft (16); the motor base (2) is arranged on the lower side of the workbench (11); the industrial personal computer (4), the charge amplifier and the sound box (5) are placed on an upper supporting plate of the workbench (11); the industrial personal computer (4), the charge amplifier and the sound box (5) are connected through signal lines; the acceleration sensor locking mechanism (6) is arranged vertically above the driving system (9) and used for fixing a sensor used for a test; the sleeve and the vibration transmission rod (7) are fixed above the vertical direction of the mandrel (15) through an acceleration sensor locking mechanism (6); the motor (12) is fixed above the motor base (2), and the rotating speed of the motor is controlled by adopting direct current speed regulation; the oil lubrication inlet (8) is arranged on the right side of the driving system (9) and is used for lubricating the driving system (9); the drive system (9) is arranged on a working platform (11); the electric appliance mounting plate (10) is placed below the workbench (11); the oil tank (13) is arranged below the testing machine, and lubricating oil is conveyed to the oil lubricating inlet (8) through an oil pump; the supporting legs (14) are installed at the bottom of the rack (1) through threaded connection;
the axial loading device (3) mainly comprises an air filter (28), a pressure reducing valve (29), a reversing valve (30), an axial loading device fixing support (31), a loading head (32), an adjustable support (33), a load rod (34), an air cylinder (35) and a measuring hook (36); an inlet P of the reversing valve (30) is connected with an outlet pipeline of the pressure reducing valve (29), and an inlet of the pressure reducing valve (29) is connected with an outlet pipeline of the air filter (28); the inlet of the air filter (28) is connected with an air inlet pipe; the front part and the rear part of the cylinder (35) are respectively connected with an outlet A and an outlet B of the reversing valve (30); the measuring hook (36) is fixedly connected to the right end of the piston rod of the air cylinder (35) through threads, so that the axial load can be accurately measured; the air cylinder (35) is fixed on the workbench (11) through a fixed support, and is connected with the load rod (34) through a piston rod in the air cylinder, the load rod (34) axially moves through the adjustable support (33), and axial force is applied to the bearing outer ring through the loading head (32); the axial loading device fixing support (31) is fixedly connected to the workbench (11) through threads; the adjustable support (33) is fixed on the fixed support (31) of the axial loading device through threaded connection, and the stroke of the loading head (32) is adjusted through adjusting the fixed position, so that the requirement of a wear life test of the rolling bearing is met.
2. The automatic deep groove ball bearing wear life tester of claim 1, characterized in that the drive system (9) comprises a mandrel (15), a main shaft (16), a right end cap and thrust bearing (17), a right three-oil-vane bearing (18), a base (19), a left three-oil-vane bearing (20), a left end cap and thrust bearing (21), a belt pulley (22), and an oil groove (23); the mandrel (15) is pressed in a conical hole of the main shaft (16) through pressure; the main shaft (16) is supported on a base (19) through a left end cover, a right end cover, a thrust bearing (21, 17), a left oil vane bearing (20) and a right oil vane bearing (18) to rotate, and the left end cover, the right end cover, the thrust bearing (21, 17) and the base (19) are connected through bolts; the left oil vane bearing (20) and the right oil vane bearing (18) are axially positioned through positioning pins and support the main shaft (16) to rotate; the belt wheel (22) is fixed at the left end of the main shaft (16) through a screw, the main shaft (16) is driven to rotate through belt transmission, and the oil groove (23) is designed in the base and used for lubricating the whole main shaft (16).
3. The automatic deep groove ball bearing wear life tester of claim 1, further comprising a heating device, wherein the heating device mainly comprises a heating box (24), a deep groove ball bearing (25), a heater hardware device (26) and a temperature setting device (27); the heating box (24) is assembled with the deep groove ball bearing (25) through a round hole, and heats the deep groove ball bearing (25); the heater hardware device (26) heats the heating box (24) according to the temperature value set by the temperature setting device (27), and the whole heating device is horizontally placed on the workbench (11).
CN201810417871.1A 2018-05-04 2018-05-04 Automatic wear life testing machine for deep groove ball bearings Active CN108414229B (en)

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Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109540521B (en) * 2019-01-21 2021-03-23 三峡大学 Ball bearing wearing principle test bed
CN110132575A (en) * 2019-05-14 2019-08-16 重庆大学 A kind of test platform of ball screw system wear-out life

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CN103278412A (en) * 2013-05-23 2013-09-04 浙江工业大学 Low-load friction-wear test device
CN105222880A (en) * 2015-10-03 2016-01-06 上海大学 Needle roller thrust bearing vibration acceleration measuring instrument
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CN102175544A (en) * 2010-12-25 2011-09-07 中北大学 Frictional wear simulation test bench of wobble friction pair
CN103278412A (en) * 2013-05-23 2013-09-04 浙江工业大学 Low-load friction-wear test device
CN105222880A (en) * 2015-10-03 2016-01-06 上海大学 Needle roller thrust bearing vibration acceleration measuring instrument
CN205748902U (en) * 2016-07-05 2016-11-30 济南时代试金试验机有限公司 A kind of multifunction friction wear testing machine

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