CN108760201B - Wave spring auxiliary test tool and test method - Google Patents
Wave spring auxiliary test tool and test method Download PDFInfo
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- CN108760201B CN108760201B CN201810510089.4A CN201810510089A CN108760201B CN 108760201 B CN108760201 B CN 108760201B CN 201810510089 A CN201810510089 A CN 201810510089A CN 108760201 B CN108760201 B CN 108760201B
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- 238000012360 testing method Methods 0.000 title claims abstract description 49
- 238000010998 test method Methods 0.000 title claims abstract description 12
- 238000005070 sampling Methods 0.000 claims abstract description 5
- 238000004154 testing of material Methods 0.000 claims description 32
- 238000006073 displacement reaction Methods 0.000 claims description 5
- 238000000034 method Methods 0.000 abstract description 9
- 238000005259 measurement Methods 0.000 description 11
- 238000013461 design Methods 0.000 description 5
- 230000005489 elastic deformation Effects 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 230000000007 visual effect Effects 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000006835 compression Effects 0.000 description 1
- 238000007906 compression Methods 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000012938 design process Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 238000005461 lubrication Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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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
- G01M5/00—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings
- G01M5/0041—Investigating the elasticity of structures, e.g. deflection of bridges or air-craft wings by determining deflection or stress
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Aviation & Aerospace Engineering (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention discloses a wave spring auxiliary test tool and a test method, wherein the wave spring auxiliary test tool comprises an upper hoop and a lower hoop, the inner diameters of the upper hoop and the lower hoop are matched with the outer diameter of a pressure plate of an electronic universal material tester, the upper hoop is used for being held on the upper pressure plate of the electronic universal material tester, and the lower hoop is used for being held on the lower pressure plate of the electronic universal material tester; extensometer, install on upper hoop and lower hoop, be used for measuring the change of upper and lower hoop's distance. The invention utilizes the auxiliary test tool and the electronic universal material tester to automatically load at a constant speed, adopts the extensometer to directly measure the deformation of the wave spring in the loading process, can overcome the test errors caused by manual loading and single-point sampling in the prior art, improves the test precision, is simple to operate, automatically records the test curve by a computer, and improves the accuracy and the test efficiency of the wave spring performance analysis.
Description
Technical Field
The invention relates to a wave spring auxiliary test tool and a test method, and belongs to the field of small and medium-sized motor manufacturing.
Background
The wave spring is widely applied to small and medium-sized motors, and is used for adjusting the pre-pressure and the clearance of the bearing, so that the bearing works in the optimal lubrication and rolling state, and vibration and noise generated in the running process of the motor are reduced. In the motor design process, the elasticity-deformation relation of the wave spring is mastered, so that a proper wave spring installation space is designed, the bearing is ensured to obtain the optimal pretightening force, and the service lives of the bearing and the motor are prolonged.
Patent document CN201610371287.8 discloses a testing device, the device applies force through a manual adjusting bolt, the indication value of the force is read out through a spring scale, the spring height is measured through a vernier caliper, the device is affected by factors of operators, and the precision is not high; moreover, the curve between the measured spring height and the pre-pressure is drawn through the extremely limited independent test points, and the actual elasticity-deformation relation of the wave spring cannot be accurately reflected.
Patent document CN201720882342.X discloses a frock of elasticity measurement, adopts certain power spring to the spring part application of force that awaits measuring, uses slide caliper to measure the compression size of spring, and the precision is not high, can not accurately, the actual elasticity-deformation relation of complete reflection wave spring.
Disclosure of Invention
The technical problems to be solved by the invention are as follows: the utility model provides a wave spring auxiliary test fixture and test method to overcome the deficiency of the prior art, in order to accurately measure the actual elasticity-deformation relation curve of the wave spring.
In order to solve the technical problems, the technical scheme of the invention is as follows: a wave spring auxiliary test tool comprises
The inner diameters of the upper hoop ring and the lower hoop ring are matched with the outer diameter of a pressure plate of the electronic universal material testing machine, the upper hoop ring is used for being held on the upper pressure plate of the electronic universal material testing machine, and the lower hoop ring is used for being held on the lower pressure plate of the electronic universal material testing machine;
extensometer, install on upper hoop and lower hoop, be used for measuring the change of upper and lower hoop's distance.
Further, the wave spring auxiliary test tool further comprises a dial indicator, wherein the dial indicator is used for measuring and calibrating the distance between the upper hoop and the lower hoop.
Further, lugs are arranged on the upper hoop and the lower hoop, the lugs enable the upper hoop to be embraced on the upper pressure plate through fastening of fixing screws or bolts, and the lugs enable the lower hoop to be embraced on the lower pressure plate through fastening of the fixing screws or bolts.
Further, all be provided with first boss and second boss on going up the hoop and the lower hoop, install the extensometer support on going up the second boss of hoop and the second boss of lower hoop, the extensometer is installed on the extensometer support, install the dial indicator seat on going up the first boss of hoop, install the top seat of dial indicator on the first boss of lower hoop, the dial indicator is installed on the top seat of dial indicator.
Further, guide positioning pin holes are formed in the corresponding positions of the upper hoop and the upper hoop, and the guide positioning pins are inserted between the guide positioning pin holes of the upper hoop and the lower hoop so as to enable the extensometer support to be aligned up and down.
The invention also provides a test method for measuring the mechanical property of the wave spring by using the wave spring auxiliary test tool, which comprises the following steps:
step S1, an upper hoop and a lower hoop are respectively arranged on an upper pressure plate and a lower pressure plate of an electronic universal material testing machine;
s2, placing a wave spring to be tested between an upper pressure plate and a lower pressure plate, adjusting the distance between the upper pressure plate and the lower pressure plate to be approximately equal to the natural height of the wave spring to be tested, and installing an extensometer on an upper hoop and a lower hoop;
and S3, controlling an upper pressure plate of the electronic universal material testing machine to be pressed downwards at a constant speed, simultaneously and continuously acquiring signals through a high-precision force sensor and an extensometer of the electronic universal material testing machine, acquiring and outputting elastic force through the high-precision force sensor, and acquiring and outputting displacement signals through the extensometer to obtain an elastic force-deformation relation curve of the waveform spring to be tested.
Further, the sampling frequency of the high-precision force sensor and the extensometer is greater than or equal to 100Hz.
Further, in the step S1, when the upper and lower hoop rings are tightly held on the upper and lower pressure plates, guide positioning pins are inserted into guide positioning pin holes at corresponding positions on the upper and lower hoop rings, so that the upper and lower hoop rings are aligned.
Further, the step of zeroing the distance between the upper pressure plate and the lower pressure plate is further included between the step S1 and the step S2, the wave spring auxiliary test fixture further comprises a dial indicator, the dial indicator is installed on the upper hoop and used for measuring the distance between the upper hoop and the lower hoop, the upper pressure plate is moved to be tightly attached to the upper pressure plate and the lower pressure plate, and the readings of the dial indicator are zeroed.
Further, in step S2, the distance between the upper platen and the lower platen is adjusted according to the reading of the dial indicator, and the distance between the upper platen and the lower platen is approximately equal to the natural length of the wave spring to be measured.
After the technical scheme is adopted, the invention has the following beneficial effects:
1) The auxiliary test tool provided by the invention can test the elasticity and deformation of the wave spring by utilizing the high-precision force sensor of the existing electronic universal material testing machine and matching with the extensometer, so as to obtain a continuous test curve, and has high measurement precision and convenient measurement;
2) The characteristic of automatic uniform loading of the electronic universal material testing machine is utilized to replace manual loading in the prior art, so that the loading precision is improved; the extensometer is adopted to directly measure the deformation in the wave spring loading process to replace the measurement of a transverse beam of a testing machine or a vernier caliper, so that the testing errors caused by mechanical gaps, visual errors and the like are effectively avoided; the invention can greatly reduce measurement errors, improve accuracy and test efficiency of waveform spring performance analysis, further improve accuracy of waveform spring model selection in motor product design, and improve product design reliability;
3) The actual distance between the upper pressing plate and the lower pressing plate of the testing machine is checked by using a dial indicator, and a reference standard is provided for checking data;
4) The automatic control device of the electronic universal material testing machine is combined with the high-precision load and displacement sensor to automatically and continuously record the elastic-deformation relation curve of the waveform spring to be tested, and accurate data support is provided for further analysis of the mechanical property and design selection of the waveform spring.
Drawings
FIG. 1 is a schematic diagram of the overall structure of a wave spring auxiliary test fixture of the present invention;
FIG. 2 is a schematic view of the structure of the hoop of the present invention;
FIG. 3 is a schematic view of the auxiliary test fixture of the present invention mounted on an electronic universal material testing machine.
Detailed Description
In order that the invention may be more readily understood, a more particular description of the invention will be rendered by reference to specific embodiments that are illustrated in the appended drawings.
Unless defined otherwise, technical or scientific terms used herein should be given the ordinary meaning as understood by one of ordinary skill in the art to which this invention belongs. The terms "first," "second," and the like in the description and in the claims, do not denote any order, quantity, or importance, but rather are used to distinguish one element from another. Likewise, the terms "a" or "an" and the like do not denote a limitation of quantity, but rather denote the presence of at least one.
Example 1:
as shown in FIG. 1 and FIG. 2, a wave spring auxiliary test fixture comprises
The inner diameters of the upper hoop 1 and the lower hoop 7 are matched with the outer diameter of a pressure plate of the electronic universal material testing machine, the upper hoop 1 is used for being held on an upper pressure plate 17 of the electronic universal material testing machine, and the lower hoop 7 is used for being held on a lower pressure plate 20 of the electronic universal material testing machine; the two ends of the upper hoop 1 are provided with lugs 8, the two lugs 8 are connected through fixing screws 9, so that the upper hoop 1 is held tightly on an upper pressure plate 17, the two ends of the lower hoop 7 are provided with lugs 8, the two lugs 8 are connected through the fixing screws 9, and the lower hoop 7 is held tightly on a lower pressure plate 20;
extensometer 19, mounted on the upper hoop 1 and the lower hoop 7, for measuring the variation of the distance between the upper and lower hoops. The upper hoop 1 is provided with a first boss 2 and a second boss 13, the lower hoop 7 is also provided with a first boss 2 and a second boss 13, the first boss 2 and the second boss 13 are respectively provided with a threaded hole 15, the first boss 2 on the upper hoop 1 corresponds to the first boss 2 on the lower hoop 7 in position, the second boss 13 on the upper hoop 1 corresponds to the second boss 13 on the lower hoop 7 in position, the second boss 13 of the upper hoop and the second boss 13 of the lower hoop are provided with extensometer supports 11, the extensometer supports 11 are arranged on the second boss 13 through fixing screws 10, and the extensometer 19 is arranged on the two extensometer supports 11. The relative movement of the upper pressure plate and the lower pressure plate drives the relative movement of the upper hoop and the lower hoop, the change of the distance between the upper hoop and the lower hoop can be measured by using the extensometer, the change of the distance corresponds to the deformation of the waveform spring to be measured, and the elasticity generated in the deformation process of the waveform spring is measured by the high-precision force sensor 18 of the electronic universal material testing machine, so that an elasticity-deformation relation curve can be obtained.
The auxiliary test tool provided by the invention can test the elasticity and deformation of the wave spring by utilizing the high-precision force sensor 18 and the extensometer 19 of the existing electronic universal material tester, and a continuous test curve is obtained. The high-precision load sensor and the clamping type extensometer of the existing electronic universal material testing machine are utilized, the elastic-deformation relation curve in the wave spring loading process is continuously recorded through computer control, the precision is high, and the testing is convenient.
The wave spring auxiliary test fixture also comprises a dial indicator 16, wherein the dial indicator 16 is used for measuring and calibrating the distance between the upper hoop 1 and the lower hoop 7. The dial indicator seat 4 is arranged on the first boss 2 of the upper hoop 1 through the screw 3, the dial indicator tip seat 5 is arranged on the first boss 2 of the lower hoop 7 through the screw 6, the dial indicator 16 is arranged on the dial indicator seat 4, and the tip of the dial indicator is abutted to the dial indicator tip seat 5.
In order to ensure the consistent position of the second boss 13 when the upper and lower hoops are installed, guide positioning pin holes 14 are arranged at the corresponding positions of the upper and lower hoops 1 and 7, and guide positioning pins 12 are inserted between the guide positioning pin holes 14 of the upper and lower hoops so as to align the extensometer support 11 up and down. The guide positioning pin holes 14 are preferably arranged on the second boss 13, but can also be arranged at other positions of the hoops, so that the position of the guide positioning pin holes 14 is ensured to be consistent with the position of the lower hoops optimally.
FIG. 3 shows the assembly structure of the auxiliary test fixture and the electronic universal material tester. On the basis of the auxiliary test tool, the test method for measuring the wave spring by using the wave spring auxiliary test tool comprises the following steps:
step S1, an upper hoop 1 and a lower hoop 7 are respectively arranged on an upper pressure plate 17 and a lower pressure plate 20 of an electronic universal material testing machine, a extensometer support 11, a dial indicator seat 4 and a dial indicator tip seat 5 are respectively arranged on corresponding bosses of the upper and lower hoops, and a dial indicator 16 is arranged on the dial indicator seat 4; when the upper hoop and the lower hoop are installed, the upper position and the lower position of the positions of the two second bosses 13 are consistent, so that the extensometer can accurately measure the distance change in the vertical direction of the upper hoop and the lower hoop, and if an included angle exists between the measuring direction of the extensometer and the moving direction of the upper hoop and the lower hoop, the extensometer cannot accurately reflect the change of the hoop distance;
s2, placing a wave spring to be measured between an upper pressure plate and a lower pressure plate, adjusting the distance between the upper pressure plate and the lower pressure plate to be approximately equal to the natural height of the wave spring to be measured, installing an extensometer 19 on the upper hoop 1 and the lower hoop 7, and measuring the change of the distance between the upper hoop and the lower hoop by using the extensometer 19;
and S3, controlling the upper pressure plate 17 of the electronic universal material testing machine to be pressed downwards at a constant speed, continuously acquiring signals through the high-precision force sensor 18 and the extensometer 19 of the electronic universal material testing machine, continuously acquiring and outputting elastic force through the high-precision force sensor 18, and acquiring and outputting displacement signals through the extensometer 19, so that an elastic force-deformation relation curve of the waveform spring to be tested can be obtained. The sampling frequency of the high-precision force sensor 18 and the extensometer 19 is greater than or equal to 100Hz, and compared with manual measurement in the prior art, the measurement precision is greatly improved. In actual operation, the upper pressure plate 17 is controlled to be pressed downwards at a constant speed by the operation computer, the high-precision force sensor 18 and the extensometer 19 simultaneously and continuously acquire and output elastic force and deformation (displacement) signals, and an elastic force-deformation relation curve in the waveform spring loading process is continuously recorded, so that the precision is high, the test is convenient, and the further analysis of the performance of the waveform spring is facilitated.
In order to ensure accurate alignment of the upper and lower hoops, in the step S1, when the upper and lower hoops are tightly held on the upper and lower platens, the guide positioning pins 12 are inserted into the guide positioning pin holes 14 at corresponding positions on the upper and lower hoops, and after the upper and lower hoops are mounted, the guide positioning pins 12 are pulled out from the guide positioning pin holes 14.
In this embodiment 1, the dial indicator 16 is mounted on the dial indicator seat 4, and the center of the dial indicator abuts against the dial indicator center seat 5. Move the upper platen 17 to the upper and lower platen pastesAt this point, the reading on dial gauge 16 is zeroed. Then step S2 is carried out, the distance between the upper pressure plate and the lower pressure plate is adjusted, the waveform spring to be measured is placed between the upper pressure plate and the lower pressure plate, and the distance between the upper pressure plate and the lower pressure plate is adjusted according to the reading of the dial indicator 16 until the reading of the dial indicator 16 is approximately equal to the natural length L of the waveform spring to be measured 0 Specifically, the reading of the adjustment dial gauge 16 is equal to the natural length L of the wave spring to be measured 0 Or is larger than the natural length L of the waveform spring to be measured 0 But does not exceed the natural length L of the waveform spring to be measured at maximum 0 5% of (L) 0 The reading of the dial indicator is less than or equal to 1.05L 0 That means that the distance between the upper pressure plate and the lower pressure plate is equal to or slightly greater than the natural length L of the waveform spring to be measured 0 At this time, the extensometer 19 is mounted on the upper hoop 1 and the lower hoop 7.
When the distance between the upper pressure plate and the lower pressure plate is adjusted according to the reading of the dial indicator, the reading of the high-precision force sensor 18 of the electronic universal material testing machine is always zero, the error loading of the waveform spring before the test is avoided, the distance between the upper pressure plate and the lower pressure plate can be properly adjusted to be larger, the distance between the upper pressure plate and the lower pressure plate is slightly larger than the natural length of the waveform spring to be tested, when the upper pressure plate 17 is pressed down, the high-precision force sensor 18 can measure a stage with zero elastic force, and the part of data can be manually removed without influencing the measurement result and the precision. The dial indicator plays a role in correcting the extensometer and assisting in measurement in the measurement process. After the dial indicator is zeroed, the results may be corrected based on the extensometer reading at that time.
When the distance between the upper pressure plate and the lower pressure plate is adjusted according to the reading of the dial indicator, the distance between the upper pressure plate and the lower pressure plate is not smaller than the natural length of the waveform spring to be measured as much as possible, otherwise, partial data can be lost during measurement.
By using the auxiliary test tool, the characteristic of automatic uniform loading of the electronic universal material testing machine is utilized to replace manual loading in the prior art, and the extensometer is adopted to directly measure the deformation in the wave spring loading process, so that the test errors caused by mechanical gaps, visual errors and the like are effectively avoided; the method can overcome the testing error caused by manual loading and single-point sampling in the prior art, improves the testing precision, is simple to operate, automatically records a testing curve by a computer, improves the accuracy and testing efficiency of the performance analysis of the waveform spring, further improves the accuracy of the waveform spring model selection in the motor product design, and improves the product design reliability.
Example 2:
as shown in FIG. 2, a wave spring auxiliary test fixture comprises
The inner diameters of the upper hoop 1 and the lower hoop 7 are matched with the outer diameter of a pressure plate of the electronic universal material testing machine, the upper hoop 1 is used for being held on an upper pressure plate 17 of the electronic universal material testing machine, and the lower hoop 7 is used for being held on a lower pressure plate 20 of the electronic universal material testing machine; the two ends of the upper hoop 1 are provided with lugs 8, the two lugs 8 are connected through bolts, so that the upper hoop 1 is held tightly on the upper pressure plate 17, the two ends of the lower hoop 7 are provided with lugs 8, the two lugs 8 are connected through bolts, and the lower hoop 7 is held tightly on the lower pressure plate 20;
extensometer 19, mounted on the upper hoop 1 and the lower hoop 7, for measuring the variation of the distance between the upper and lower hoops. The upper hoop 1 is provided with a second boss 13, the lower hoop 7 is also provided with a second boss 13, the second boss 13 of the upper hoop and the second boss 13 of the lower hoop are respectively provided with an extensometer support 11, and the extensometer 19 is arranged on the two extensometer supports 11. The setting position of the second boss 13 on the upper hoop 1 may not be identical to the setting position of the second boss 13 on the lower hoop 7, and when installing the two hoops, only the upper and lower positions of the two second bosses 13 are ensured to be identical. Not shown in this case. The relative movement of the upper and lower pressure plates drives the relative movement of the upper and lower hoops, and the change of the distance between the upper and lower hoops can be measured by the extensometer 19, and the change of the distance corresponds to the deformation of the waveform spring to be measured.
Example 3:
the inner diameters of the upper hoop 1 and the lower hoop 7 are matched with the outer diameter of a pressure plate of the electronic universal material testing machine, the upper hoop 1 is used for being held on an upper pressure plate 17 of the electronic universal material testing machine, and the lower hoop 7 is used for being held on a lower pressure plate 20 of the electronic universal material testing machine;
extensometer 19, mounted on the upper hoop 1 and the lower hoop 7, for measuring the variation of the distance between the upper and lower hoops. The upper hoop 1 and the lower hoop 7 are respectively provided with an extensometer support 11, and the extensometer 19 is arranged on the two extensometer supports 11, so that the upper and lower positions of the two extensometer supports are ensured to be consistent when the extensometer is arranged. Not shown in this case.
The wave spring auxiliary test fixture also comprises a dial indicator 16, wherein the dial indicator 16 is used for measuring and calibrating the distance between the upper hoop 1 and the lower hoop 7. The dial indicator seat 4 is installed on the upper hoop 1, the dial indicator center seat 5 is installed on the lower hoop 7, the dial indicator 16 is installed on the dial indicator seat 4, the center of the dial indicator abuts against the dial indicator center seat 5, and when the dial indicator 16 and the center of the dial indicator are installed, the direction of the center of the dial indicator is guaranteed to be parallel to the moving direction of the upper pressure plate and the lower pressure plate, in the embodiment, the upper pressure plate and the lower pressure plate move in the vertical direction, and the dial indicator 16 and the center of the dial indicator are kept in the vertical direction.
The technical problems, technical solutions and advantageous effects solved by the present invention have been further described in detail in the above-described embodiments, and it should be understood that the above-described embodiments are only illustrative of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the scope of protection of the present invention.
Claims (7)
1. The utility model provides a wave spring auxiliary test frock which characterized in that: comprising
The inner diameters of the upper hoop ring (1) and the lower hoop ring (7) are matched with the outer diameter of a pressure plate of the electronic universal material testing machine, the upper hoop ring (1) is used for being held on an upper pressure plate (17) of the electronic universal material testing machine, and the lower hoop ring (7) is used for being held on a lower pressure plate (20) of the electronic universal material testing machine;
an extensometer (19) which is arranged on the upper hoop (1) and the lower hoop (7) and is used for measuring the change of the distance between the upper hoop and the lower hoop;
the device also comprises a dial indicator (16), wherein the dial indicator (16) is used for measuring and calibrating the distance between the upper hoop (1) and the lower hoop (7);
the upper hoop (1) and the lower hoop (7) are provided with lugs (8), the lugs (8) enable the upper hoop (1) to be held on the upper pressure plate (17) through fastening of fixing screws (9) or bolts, and the lugs (8) enable the lower hoop (7) to be held on the lower pressure plate (20) through fastening of the fixing screws (9) or bolts;
go up all be provided with first boss (2) and second boss (13) on hoop (1) and lower hoop (7), install extensometer support (11) on second boss (13) of going up the hoop and second boss (13) of hoop down, extensometer (19) are installed on extensometer support (11), install percentage table seat (4) on first boss (2) of going up hoop (1), install percentage table top seat (5) on first boss (2) of hoop down, install percentage table (16) on percentage table seat (4), the top of percentage table supports in percentage table top seat (5).
2. The wave spring auxiliary test tool according to claim 1, wherein: guide positioning pin holes (14) are formed in the corresponding positions of the upper hoop (1) and the lower hoop (7), and the guide positioning pins (12) are inserted between the guide positioning pin holes (14) of the upper hoop and the lower hoop so as to enable the extensometer support (11) to be aligned up and down.
3. A test method for measuring mechanical properties of a wave spring using the wave spring auxiliary test fixture according to any one of claims 1 to 2, comprising the steps of:
step S1, an upper hoop (1) and a lower hoop (7) are respectively arranged on an upper pressure plate (17) and a lower pressure plate (20) of an electronic universal material testing machine;
s2, placing a wave spring to be tested between an upper pressure plate and a lower pressure plate, adjusting the distance between the upper pressure plate and the lower pressure plate to be approximately equal to the natural height of the wave spring to be tested, and installing an extensometer (19) on the upper hoop (1) and the lower hoop (7);
and S3, controlling an upper pressure plate (17) of the electronic universal material testing machine to be pressed downwards at a constant speed, continuously acquiring signals simultaneously through a high-precision force sensor (18) and an extensometer (19) of the electronic universal material testing machine, acquiring and outputting elastic force by the high-precision force sensor (18), and acquiring and outputting displacement signals by the extensometer (19), so that an elastic force-deformation relation curve of the waveform spring to be tested can be obtained.
4. A test method for measuring the mechanical properties of a wave spring according to claim 3, wherein: the sampling frequency of the high-precision force sensor (18) and the extensometer (19) is more than or equal to 100Hz.
5. A test method for measuring the mechanical properties of a wave spring according to claim 3, wherein: in the step S1, when the upper hoop and the lower hoop are tightly held on the upper pressure plate and the lower pressure plate, guide positioning pins (12) are inserted into guide positioning pin holes (14) at corresponding positions on the upper hoop and the lower hoop so as to align the upper hoop and the lower hoop.
6. A test method for measuring the mechanical properties of a wave spring according to claim 3, wherein: the wave spring auxiliary test fixture further comprises a dial indicator (16), wherein the dial indicator (16) is arranged on the upper hoop (1) and used for measuring the distance between the upper hoop and the lower hoop, the upper pressure plate (17) is moved to be tightly attached to the upper pressure plate and the lower pressure plate, and the readings of the dial indicator (16) are zeroed.
7. The test method for measuring the mechanical properties of the wave spring according to claim 6, wherein: in step S2, the distance between the upper pressure plate and the lower pressure plate is adjusted according to the reading of the dial indicator (16), and the distance between the upper pressure plate and the lower pressure plate is approximately equal to the natural length of the waveform spring to be measured.
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| CN201810510089.4A CN108760201B (en) | 2018-05-24 | 2018-05-24 | Wave spring auxiliary test tool and test method |
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| CN201810510089.4A CN108760201B (en) | 2018-05-24 | 2018-05-24 | Wave spring auxiliary test tool and test method |
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| CN112432747B (en) * | 2020-11-17 | 2023-05-02 | 四川航天中天动力装备有限责任公司 | Testing device and method for testing fatigue performance of engine wave spring |
| CN113092233A (en) * | 2021-03-10 | 2021-07-09 | 上海复合材料科技有限公司 | Static load test system suitable for cartridge adapter and test method thereof |
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| CN117030165B (en) * | 2023-10-09 | 2024-01-23 | 张家港市浩久机械有限公司 | Wave spring fatigue resistance testing device with quick positioning function |
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| FR2886402B1 (en) * | 2005-05-24 | 2007-12-07 | Univ Lille Sciences Tech | COLLAR FOR MEASURING THE SIDE DEFORMATION OF A TEST DURING COMPRESSION TESTS, IN PARTICULAR UNIAXIAL OR TRIAXIAL TESTS |
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| CH661125A5 (en) * | 1982-10-09 | 1987-06-30 | Walter Gfeller | Apparatus for testing and measuring the flexibility of skis and for determining their sliding and repulsion zones |
| JP2007046929A (en) * | 2005-08-08 | 2007-02-22 | Aoyama Seisakusho Co Ltd | Tensile testing method of bolt |
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| CN108760201A (en) | 2018-11-06 |
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