CN112414711A - Simple fatigue life testing machine for bull's eye bearing - Google Patents
Simple fatigue life testing machine for bull's eye bearing Download PDFInfo
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- CN112414711A CN112414711A CN202011428493.0A CN202011428493A CN112414711A CN 112414711 A CN112414711 A CN 112414711A CN 202011428493 A CN202011428493 A CN 202011428493A CN 112414711 A CN112414711 A CN 112414711A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M13/00—Testing of machine parts
- G01M13/04—Bearings
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- Testing Of Devices, Machine Parts, Or Other Structures Thereof (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a simple fatigue life testing machine for a bullseye bearing. The method is characterized in that: the device comprises a base, wherein a motor fixing plate is arranged at one end of the base, two vertical plates (10) are arranged at the other end of the base, an inner ring is arranged in the two vertical plates (10) so as to place a bull's eye bearing (9) to be tested, and the inner ring is fixed on the vertical plates (10) through a sleeve connecting plate; install the motor on aforementioned motor fixed plate, this motor output shaft is connected with experimental main shaft (4) transmission, and this experimental main shaft (4) both ends are installed on aforementioned base through bearing frame (3) respectively to the middle part of this experimental main shaft (4) is located aforementioned inner ring below, and the cover is equipped with the inner ring on the middle part of this experimental main shaft (4), and this inner ring passes through closure plate fixed mounting on this experimental main shaft (4). The device of the invention realizes the completion of the basic functions of the test with lower cost and simple operation.
Description
Technical Field
The invention relates to a simple fatigue life testing machine for a bullseye bearing.
Background
Although the bull-eye bearing belongs to a standard part, the bull-eye bearing has different forms and material compositions according to the application. For example, the structural form of the finished bull eye bearing product related to the invention is shown in fig. 1, and the finished bull eye bearing product is a bearing applied to a transmission system of an automatic parking lot and the like, and 4 bull eye bearings are arranged below a parking plate in a group, so that the parking plate can slide very flexibly, and the automation degree of the parking lot is greatly improved.
After the independent research and development of the bull's eye bearing are completed, the performance of the bull's eye bearing needs to be verified, namely whether the large steel ball of the bull's eye bearing rolls flexibly and smoothly and the whole running speed is measured before the working surface of the bearing begins to lose effectiveness and peel off due to stress (fatigue life). The main bearing that bearing fatigue life testing machine mainly aims at in the existing market is antifriction bearing, does not have the fatigue life testing machine to the bull's eye bearing specially to the antifriction bearing fatigue life testing machine's of selling in the market characteristics are: the intelligent and personalized design, the structure is complex, the functions are various, the automation degree is high, the control precision is high, the processes are multiple, the operation is complex and the difficulty is high, the operation level of operators is required to be high, and the selling price is high.
Disclosure of Invention
The invention aims to provide a simple fatigue life testing machine for a bull eye bearing, which has the advantages of simple structure, low cost and high efficiency.
A simple fatigue life testing machine for a bullseye bearing is characterized in that: the device comprises a base, wherein a motor fixing plate is arranged at one end of the base, two vertical plates are arranged at the other end of the base, an inner ring is arranged in the two vertical plates so as to place a bull's eye bearing to be tested, and the inner ring is fixed on the vertical plates through a sleeve connecting plate; install the motor on aforementioned motor fixed plate, this motor output shaft is connected with experimental main shaft transmission, and this experimental main shaft both ends are installed on aforementioned base through the bearing frame respectively to the middle part of this experimental main shaft is located aforementioned inner ring below, and the cover is equipped with the inner ring on the middle part of this experimental main shaft, and this inner ring passes through closure plate fixed mounting on this experimental main shaft, thereby it contacts with the big steel ball bottom of the bull's eye bearing that awaits measuring still fixed mounting have the outer loop in the middle of this inner ring.
Wherein the motor adopts a speed regulating motor.
Wherein the output shaft of the motor is directly connected with the test main shaft through a coupler.
Wherein, symmetrical grooves are arranged at the inner sides of the two vertical plates, a pressure plate is arranged on the symmetrical grooves, a threaded hole is arranged in the middle of the pressure plate, and a loading bolt is arranged on the threaded hole.
The simple fatigue life testing machine for the bull eye bearing has the following beneficial effects: (1) the structure is simple, the design and the processing are easy, the welding frame is adopted, the processing amount is small, the manufacturing period is short, the manufacturing cost is low, and the basic function of the fatigue life test of the bull's eye bearing is met by the simplest operation with the lowest cost; (2) the test device is convenient to operate and disassemble, the test time is shortened, and the efficiency is high; (3) the speed regulating motor is directly flexibly connected with the test main shaft through the coupler, so that light-load operation is realized, the speed is automatically controlled, manual and automatic integrated control is realized, the power of the speed regulating motor is low, and energy is saved; (4) manual pressurization is realized, energy is saved, environment is protected, and continuous pressurization and pressure maintaining functions can be realized; (5) the load, test time and rotating speed signal data are manually input into a computer and are subjected to mechanical analysis, and the device is safe and reliable.
The device of the invention realizes the completion of the basic functions of the test with lower cost and simple operation. The manual pressurization type hydraulic cylinder has the advantages of simple structure, easiness in design and processing, short manufacturing period, low manufacturing cost, convenience in operation and disassembly, high efficiency, manual pressurization, energy conservation, environmental friendliness and the like.
Drawings
FIG. 1 is a schematic structural diagram of a bull's eye bearing in the background of the invention;
FIG. 2 is a schematic structural diagram of the present invention;
fig. 3 is a schematic view of the present invention in use.
Detailed Description
As shown in fig. 1, 2 and 3, the invention provides a simple fatigue life testing machine for a bullseye bearing, which comprises a base, wherein a motor fixing plate is arranged at one end of the base, two vertical plates 10 are arranged at the other end of the base, an inner ring is arranged in the two vertical plates 10 so as to place a bullseye bearing 9 to be tested, and the inner ring is fixed on the vertical plates 10 through an inner ring connecting plate; install the motor on aforementioned motor fixed plate, this motor output shaft is connected with the transmission of experimental main shaft 4, and this 4 both ends of experimental main shaft are installed on aforementioned base through bearing frame 3 respectively to the middle part of this experimental main shaft 4 is located aforementioned inner ring below, and the cover is equipped with the inner ring on the middle part of this experimental main shaft 4, and this inner ring passes through closure plate fixed mounting on this experimental main shaft 4, thereby it contacts with the big steel ball bottom of the bull's eye bearing 9 that awaits measuring still fixed mounting have outer loop 7 in the middle of this inner ring.
The motor adopts a speed regulating motor 1, and an output shaft of the motor is directly connected with a test main shaft 4 through a coupler 2. In addition, symmetrical grooves are formed in the inner sides of the two vertical plates 10, a pressing plate 5 is installed on each symmetrical groove, a threaded hole is formed in the middle of each pressing plate 5, and a loading bolt 8 is installed on each threaded hole.
Example 1:
as shown in fig. 1, 2 and 3, the simple fatigue life testing machine for the bull's eye bearing comprises a power transmission part and a welding rack base, wherein a power source of the power transmission part is a speed regulating motor 1, the speed regulating motor 1 is directly connected with a testing spindle 4 through a coupler 2, and the testing spindle 4 rotates to drive a steel ball of the bull's eye bearing to rotate so as to complete a fatigue test; the technical scheme includes that a bearing seat 3 is mounted on a welding rack base and is a mechanical supporting point of a test main shaft 4, two vertical plates 10 are welded on the welding rack base and serve as a machine body of the whole fatigue life testing machine, a to-be-tested bull-eye bearing 9 is placed in an inner ring of the vertical plate 10 structure to limit the circumferential freedom degree of the to-be-tested bull-eye bearing, symmetrical grooves are formed in the two vertical plates 10, a pressing plate 5 is placed to limit the Z-direction freedom degree of the to-be-tested bull-eye bearing 9, and a threaded hole is formed in the pressing plate 5 and used for fixing a.
The speed regulating motor 1 is installed on a steel plate of a base of the welding rack, is a power source of the whole testing machine, and is low in rotating speed and large in torque. The coupler 2 is flexibly connected with the speed regulating motor 1 and the test main shaft 4, so that the testing machine can run under light load, and has a compact structure and large torque. The two bearing seats 3 are used as mechanical supporting points of the test main shaft 4, are reasonably supported, reduce the flexural deformation of the test main shaft 4, and are arranged on a bearing seat 3 base plate of a welding rack base through bolts.
The test main shaft 4 is formed by welding a long shaft, two circular blocking plates, an inner ring and an outer ring 7 at proper positions. The left end of the shaft is connected with the coupling 2 through a key after being processed, and the shaft is arranged at the left middle position and the shaft tail
Two bearing seats 3 are arranged at the outer diameter part to realize rotary motion and transmit power to the whole testing machine, and the outer ring 7 is in contact with the big steel ball of the bull eye bearing to rotate at a constant speed to finish the fatigue test. The welding rack is formed by assembling and welding a welding rack base and a vertical plate 10 structure, and is a mounting platform for the speed regulating motor 1 and the bearing seat 3, and the vertical plate 10 structure on the welding rack limits the circumferential freedom degree of the bull's eye bearing.
The pressing plate 5 is a steel plate with two short sides needing to be processed and a threaded hole drilled in the middle, is arranged between two symmetrical grooves of two vertical plates 10 of the frame and is used for fixing a loading bolt 8. The loading bolt 8 is an M20 × 55 hexagon socket head cap screw, is used for applying load to the bullseye bearing, and can apply load with a certain value through a torque wrench.
The welding rack base is formed by welding and post-processing channel steel and steel plates, the channel steel is used as a framework of the base, the steel plates are supported and protected on the most plane, and the steel plates are used for installing the speed regulating motor 1 and the bearing seat 3 after being subjected to multi-position drilling processing. The vertical plate 10 structure is formed by welding two vertical plates 10 with processed symmetrical grooves, a rib plate, an inner ring and an inner ring connecting plate, and is mainly used for placing a to-be-detected bull eye bearing 9 and a pressing plate 5.
Example 2:
the invention relates to a simple fatigue life testing machine for a bull-eye bearing, which comprises a speed regulating motor 1, a coupler 2, a testing main shaft 4, a bearing seat 3, a rolling bearing, a welding rack, a pressing plate 5 and a loading bolt 8.
The speed regulating motor 1 is a power source of a power transmission part, is arranged on a base plate of a welding machine frame base through bolts, is a purchased part, has low rotating speed and large torque, and is flexibly connected with the test main shaft 4 through the coupler 2, so that the test main shaft 4 rotates to drive a large steel ball of the bull eye bearing 9 to be tested to rotate, and the fatigue test is completed.
The coupler 2 is also a purchased part, so that the testing machine can realize light-load operation, and has a compact structure and large torque.
The test main shaft 4 is formed by welding a long shaft, two circular blocking plates, an inner ring and an outer ring 7 at proper positions. The left end of the shaft is connected with the coupling 2 through a key after being processed, and the shaft is arranged at the left middle position and the shaft tail
Two bearing seats 3 are arranged at the outer diameter part to realize rotary motion and transfer power to the whole testing machine, and the outer ring 7 is in contact with the big steel ball of the bull eye bearing and rotates at a constant speed.
The two bearing seats 3 are also purchased parts and are used as mechanical supporting points of the test main shaft 4, so that the flexural deformation of the test main shaft 4 is reduced, and the bearing seats are arranged on a base plate of the bearing seat 3 of the welding machine frame base through bolts.
The welding frame is formed by welding a welding frame base and a vertical plate 10 in an assembling mode and is an installation platform of the speed regulating motor 1 and the bearing seat 3, and the vertical plate 10 on the welding frame structurally limits the circumferential freedom degree of the bull's eye bearing. The welding rack base is formed by welding 4 100X 48X 5.3 channel steel into a frame shape, a mounting plate of the speed regulating motor 1 is welded and mounted on the left side of the welding rack base, a support of the rear bearing seat 3 is welded and mounted on the right side of the welding rack base, a backing plate of the front bearing seat 3 is welded on the rightmost side of the mounting plate of the speed regulating motor 1, mounting surfaces of the speed regulating motor 1 and the bearing seat 3 are machined after welding, and mounting holes are drilled. The riser 10 structure is by two risers 10 of well processing the symmetric groove, the gusset plate, the inner ring, the muffjoint board welding forms, a logical groove has been processed before the welding to every riser 10, be used for placing clamp plate 5, restriction eyelet bearing Z degree of freedom to, 2 set-squares as the strengthening rib are welded at every riser 10 lower extreme, the coexistence board 10 is placed according to the size opposition, guarantee that logical groove position height on the symmetric position on two risers 10 is unanimous, 4 muffjoint boards of suitable position welding between the coexistence board 10, press from both sides in 4 muffjoint board intermediate position and weld an inner ring, be used for placing the eyelet bearing 9 that awaits measuring, restrict its circumferential degree of freedom, the right middle position of welding the structural riser 10 of riser 10 and gusset welding at last frame base.
The using method and the working principle of the invention are as follows:
the invention relates to a simple fatigue life testing machine for a bull-eye bearing, which is mainly used for verifying whether a large steel ball of the bull-eye bearing rolls flexibly, smoothly and testing the fatigue failure time.
In operation, the loading bolt 8 is firstly screwed off, and the pressure plate 5 is dismounted; secondly, a big steel ball of the bull eye bearing is arranged in an inner ring between two vertical plates 10, the big steel ball of the bull eye bearing is in clearance fit with an outer ring 7 of the test main shaft 4 under the action of gravity; thirdly, mounting the pressing plate 5 in symmetrical grooves on the two vertical plates 10, screwing the loading bolt 8, enabling the bottom of the loading bolt 8 to be propped against the upper part of the bull eye bearing, tightly propping the bull eye bearing by using a torque wrench to apply force, and measuring fastening force; and finally, starting the speed regulating motor 1 to enable the speed regulating motor 1, the coupler 2 and the test main shaft 4 to rotate at a constant speed.
In the operation process, the rotation condition of the big steel ball of the bull-eye bearing needs to be observed constantly, and if the conditions such as dead jacking, slipping or unsmooth rotation occur, the machine needs to be stopped immediately to analyze the reason. If all normal, need many times simulation actual service conditions, record motor speed, torque wrench's fastening force and fatigue failure's time, do not preferably need to break the test in the middle to obtain the data that is closest to reality.
After the test is finished, the loading bolt 8 is dismounted, the pressing plate 5 is dismounted, the bull eye bearing 9 to be tested is pulled out, then the bull eye bearing is completely dismounted, and the fatigue failure condition is observed.
Claims (4)
1. The utility model provides a simple and easy fatigue life testing machine of bullseye bearing which characterized in that: the device comprises a base, wherein a motor fixing plate is arranged at one end of the base, two vertical plates (10) are arranged at the other end of the base, an inner ring is arranged in the two vertical plates (10) so as to place a bull's eye bearing (9) to be tested, and the inner ring is fixed on the vertical plates (10) through a sleeve connecting plate; install the motor on aforementioned motor fixed plate, this motor output shaft is connected with experimental main shaft (4) transmission, install on aforementioned base through bearing frame (3) respectively at this experimental main shaft (4) both ends, and the middle part of this experimental main shaft (4) is located aforementioned inner ring below, the cover is equipped with the inner ring on the middle part of this experimental main shaft (4), this inner ring passes through closure plate fixed mounting on this experimental main shaft (4), thereby it contacts bottom the big steel ball of outer loop (7) and bull's eye bearing (9) that awaits measuring still fixed mounting in the middle of this inner ring.
2. The simple fatigue life tester for the bull's eye bearing according to claim 1, characterized in that: wherein the motor adopts a speed regulating motor (1).
3. The simple fatigue life tester for the bull's eye bearing according to claim 1, characterized in that: wherein the output shaft of the motor is directly connected with the test main shaft (4) through the coupler (2).
4. The simple fatigue life tester for the bull's eye bearing according to claim 1, characterized in that: wherein, symmetrical grooves are arranged at the inner sides of the two vertical plates (10), a pressure plate (5) is arranged on the symmetrical grooves, a threaded hole is arranged in the middle of the pressure plate (5), and a loading bolt (8) is arranged on the threaded hole.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011428493.0A CN112414711A (en) | 2020-12-09 | 2020-12-09 | Simple fatigue life testing machine for bull's eye bearing |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011428493.0A CN112414711A (en) | 2020-12-09 | 2020-12-09 | Simple fatigue life testing machine for bull's eye bearing |
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| Publication Number | Publication Date |
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| CN112414711A true CN112414711A (en) | 2021-02-26 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN202011428493.0A Pending CN112414711A (en) | 2020-12-09 | 2020-12-09 | Simple fatigue life testing machine for bull's eye bearing |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019375A (en) * | 2021-11-09 | 2022-02-08 | 贵州航天林泉电机有限公司 | High-speed short-shaft motor test device |
-
2020
- 2020-12-09 CN CN202011428493.0A patent/CN112414711A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114019375A (en) * | 2021-11-09 | 2022-02-08 | 贵州航天林泉电机有限公司 | High-speed short-shaft motor test device |
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