CN110836830B - Fatigue testing machine capable of adjusting coaxiality and load chain centering adjustment method - Google Patents
Fatigue testing machine capable of adjusting coaxiality and load chain centering adjustment method Download PDFInfo
- Publication number
- CN110836830B CN110836830B CN201911211300.3A CN201911211300A CN110836830B CN 110836830 B CN110836830 B CN 110836830B CN 201911211300 A CN201911211300 A CN 201911211300A CN 110836830 B CN110836830 B CN 110836830B
- Authority
- CN
- China
- Prior art keywords
- centering
- loading
- sensor
- adjusting
- force
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000009661 fatigue test Methods 0.000 title claims abstract description 17
- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012360 testing method Methods 0.000 claims abstract description 45
- 238000009434 installation Methods 0.000 claims description 28
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 17
- 238000006073 displacement reaction Methods 0.000 claims description 15
- 239000004519 grease Substances 0.000 claims description 12
- 230000001050 lubricating effect Effects 0.000 claims description 12
- 238000002360 preparation method Methods 0.000 claims description 9
- 229910052742 iron Inorganic materials 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 7
- 230000008859 change Effects 0.000 claims description 4
- 230000003247 decreasing effect Effects 0.000 claims description 3
- 230000005489 elastic deformation Effects 0.000 claims description 3
- 235000000396 iron Nutrition 0.000 claims 4
- 230000008569 process Effects 0.000 abstract description 4
- 230000008713 feedback mechanism Effects 0.000 abstract description 3
- 229910000746 Structural steel Inorganic materials 0.000 description 10
- 238000005259 measurement Methods 0.000 description 4
- 238000005452 bending Methods 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000006835 compression Effects 0.000 description 2
- 238000007906 compression Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 235000017166 Bambusa arundinacea Nutrition 0.000 description 1
- 235000017491 Bambusa tulda Nutrition 0.000 description 1
- 241001330002 Bambuseae Species 0.000 description 1
- 235000015334 Phyllostachys viridis Nutrition 0.000 description 1
- 239000011425 bamboo Substances 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000006872 improvement Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000007246 mechanism Effects 0.000 description 1
- 239000002243 precursor Substances 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N3/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N3/62—Manufacturing, calibrating, or repairing devices used in investigations covered by the preceding subgroups
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B5/00—Measuring arrangements characterised by the use of mechanical techniques
- G01B5/24—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes
- G01B5/25—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes
- G01B5/252—Measuring arrangements characterised by the use of mechanical techniques for measuring angles or tapers; for testing the alignment of axes for testing the alignment of axes for measuring eccentricity, i.e. lateral shift between two parallel axes
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/0058—Kind of property studied
- G01N2203/0069—Fatigue, creep, strain-stress relations or elastic constants
- G01N2203/0073—Fatigue
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0676—Force, weight, load, energy, speed or acceleration
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N2203/00—Investigating strength properties of solid materials by application of mechanical stress
- G01N2203/02—Details not specific for a particular testing method
- G01N2203/06—Indicating or recording means; Sensing means
- G01N2203/067—Parameter measured for estimating the property
- G01N2203/0682—Spatial dimension, e.g. length, area, angle
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Biochemistry (AREA)
- General Health & Medical Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Immunology (AREA)
- Pathology (AREA)
- Investigating Strength Of Materials By Application Of Mechanical Stress (AREA)
Abstract
The invention relates to a fatigue testing machine with adjustable coaxiality and a loading chain centering adjustment method, and belongs to the technical field of testing machines. Comprises a main shaft loading chain, a centering adjusting device, a centering sensor, a feedback device and a frame. The centering adjusting device is arranged on a main shaft loading chain, the main shaft loading chain is arranged on a frame, and the detecting and feedback mechanism is arranged on the frame and used for detecting and controlling the adjustment quantity. Five degrees of freedom adjustment on the load chain can be performed; the strength of the device is improved, and the rigidity of the device is improved by installing the adjusting module on the same parent body, so that the device is more stable and safer in the loading process; the adaptability is strong, and the loading chains with different shaft diameters can be installed by adjusting the sizes of the parent body and other components, so that other types of testing machines can be installed; can match multiple anchor clamps, the space occupies for a short time, easy operation, and the adjustment precision is controllable, and stability is good, and repeated adjustment precision is high, can improve experimental accuracy, makes measured data more accurate.
Description
Technical Field
The invention relates to the technical field of testing machines, in particular to a fatigue testing machine with adjustable coaxiality and a loading chain centering adjustment method. The coaxiality of the loading chain can be calibrated on the tester.
Background
Along with the development of economy and technology, the industry of the testing machine is as same as spring bamboo shoots after raining, the testing machine for various purposes is continuously developed, can measure the mechanical property, the technological property, the internal defect, the dynamic unbalance of the rotary parts and the like of the materials, and is widely applied to the fields of mechanical industry and the like. The traditional coaxiality adjustment mode of the testing machine is manual adjustment, but the manual adjustment is low in efficiency, different in standard, limited in adjustment amount and easy to cause the results of damage, substandard precision, poor stability and the like of the testing machine, so that the fatigue testing machine with the coaxiality adjustable is designed for solving the problems.
Disclosure of Invention
The invention aims to provide a fatigue testing machine with adjustable coaxiality and a loading chain centering adjustment method, which solve the problems that the loading chain of the existing testing machine needs to be disassembled and cannot be adjusted in real time, and fill the blank of the prior art to a certain extent; the invention solves the problem that the manual assembly adjustment precision is uncontrollable, realizes one-time adjustment, has good stability, does not need repeated adjustment, has high reliability, simultaneously indexes the adjustment shaft, ensures that the adjustment quantity reaches 0.01mm, has a large adjustment range (+ -0.5 mm), ensures that the radius of the spherical surface of the parent body for adjusting the angle reaches the center of the loading test piece, and ensures that the adjustment angle is +/-0.35 degrees; the centering device and the clamp are in threaded connection combination, so that five degrees of freedom adjustment (two degrees of freedom of an orthogonal plane of the loading chain installation, two degrees of freedom of rotation and axial rotation of the loading chain) can be realized, and any angle and direction on the loading chain can be adjusted; parts with easy damage parts and high positioning precision requirements in the adjusting device are all of standardized design, important parts are easy-to-work parts and standard parts of rotary parts, loss is reduced, the service life of the device is prolonged, and meanwhile the rigidity of the whole device is not influenced; the device is connected with the whole machine loading chain, so that the strength of the whole device is improved, the damage and deformation to a loading shaft are reduced, the centering gap in the loading chain is eliminated by adopting flange connection, the rigidity of the adjusting device has no influence on the rigidity of a whole machine system, and meanwhile, the adjusting module is fixedly connected with the whole machine loading chain, so that the external force borne by the adjusting device is borne by the whole machine, the strength of the device is improved, and the rigidity of the device is increased by installing the adjusting module on the same parent body, so that the device is more stable and safer in the loading process; the centering device has strong adaptability, and the size of the parent body and other parts is adjusted to be used for installing loading chains with different shaft diameters; other types of testing machines such as compression testing machine, torsion testing machine, bending testing machine, universal testing machine, etc. can also be installed; the clamp can be matched with various types of clamps, occupies small space, is simple to operate, has high repeated adjustment precision, improves experimental precision, and enables measurement data to be more accurate.
The above object of the present invention is achieved by the following technical solutions:
The fatigue testing machine with adjustable coaxiality comprises a main shaft loading chain, a centering adjusting device, a centering sensor, a feedback device and a machine frame, wherein the centering adjusting device is arranged on the main shaft loading chain, the main shaft loading chain is arranged on the machine frame, and the detecting and feedback mechanism is arranged on the machine frame for detecting and controlling the adjustment quantity.
The spindle loading chain is: the electric actuating cylinder 13 is arranged on the supporting block 16, the centering device parent body 1 is arranged on an output shaft of the electric actuating cylinder 13, the angle adjusting shaft 7 is arranged on the centering device parent body 1, the force sensor 10 is arranged on the sensor connecting shaft 8, and the force sensor 10 is positioned on the sensor connecting shaft 8 through a cylindrical pin; the guide shaft 12 is screwed into the force sensor 10, the locking ring 11 is sleeved at the connecting journal of the guide shaft 12, the guide shaft 12 is arranged on the V-shaped block 24, and the V-shaped block 24 is arranged on the supporting frame 15; the profiling clamp 20 is mounted on the guide shaft 12, the test piece 22 is mounted on the profiling clamp 20, and the cover plate 21 is mounted on the profiling clamp 20 and fixed by the cover plate bolt 23.
The centering adjustment device is as follows: the centering device parent body 1 is mounted on an electric cylinder output shaft through an electric cylinder mounting bolt 27, the fixed ring 4 is mounted on the centering device parent body 1 through a fixed ring mounting bolt 3, and the four angle adjusting bolts 5 are mounted on the fixed ring 4; the angle adjusting shaft 7 is connected in the centering device parent body 1, the sensor connecting shaft 8 is connected with the angle adjusting shaft 7 through the coaxial adjusting bolt 6, the coaxial adjusting bolt 6 is arranged on the angle adjusting shaft 7, the force sensor 10 is arranged on the sensor connecting shaft 8, the V-shaped block 24 is arranged on the supporting frame 15, and the supporting frame 15 is arranged on the T-shaped groove iron 18.
The centering sensor and the feedback device are as follows: the force sensor 10 is arranged on a loading chain, the host and the processor are connected with the force sensor 10 through USB data lines and are arranged on the frame, the displacement information is output by the grating ruler on the electric actuating cylinder 13 and transmitted to the host, the centering sensor is arranged on the loading chain, and the centering sensor is formed by attaching a strain gauge and a strain gauge to the test piece 22.
The electric cylinder 13 adopts a foldback type electric cylinder CDJ2D16-100Z-M9B-B, and the stroke of the electric cylinder is 100mm.
The frame is: four guide posts 17 are mounted on a supporting block 16, the supporting block 16 is mounted on a left supporting frame 15 and a right supporting frame 15, and the supporting frames 15 are mounted on a T-shaped channel iron 18; the supporting seat 25 is installed on the T-shaped groove iron 18, the electric cylinder supporting frame 14 is installed on the supporting frame 15, the V-shaped block 24 is installed on the supporting frame 15, the positioning block 19 is installed on the T-shaped groove iron 18, and the electric cylinder 13 is installed on the electric cylinder supporting frame 14.
Another object of the present invention is to provide a method for centering and adjusting a load chain of a fatigue testing machine, comprising the steps of:
Step (1), assembling a rack: firstly, four guide posts 17 are installed on two supporting blocks 16 to assemble a complete machine frame, two supporting frames 15 are installed on a T-shaped channel iron 18, the frame is installed on the two supporting frames 15 and locked by adjusting nuts, a positioning block 19 is installed on the T-shaped channel iron 18 and used for positioning the position of the frame on the T-shaped channel iron 18, an electric cylinder supporting frame 14 is installed on the supporting frames 15, an electric cylinder 13 is placed on the electric cylinder supporting frame 14, a supporting seat 25 is installed on the T-shaped channel iron 18, and electric cylinder mounting bolts 27 are inserted into a front flange of the electric cylinder to be mounted, so that frame assembly is completed;
Step (2), assembling all parts of a loading chain:
2.1, assembling centering adjusting device:
2.1.1, placing the centering device parent body 1 on a horizontal table, wiping the installation surface, smearing lubricating grease on the installation surface and the matched hole sites, and standing for preparation;
2.1.2, turning over the centering device matrix, placing the angle adjusting shaft 7 in the middle of the centering device matrix 1, aligning with the installation hole site, carrying out surface calibration level on the angle adjusting shaft 7, and installing the angle adjusting shaft connecting bolt 2;
2.1.3, sequentially screwing two opposite bolts, adjusting the level, then pre-tightening the bolts in pairs to finish six groups of bolts, leveling, and finally applying pre-tightening force specified by national standard;
2.1.4, wiping the installation surface of the overturning centering device parent body 1 after the installation is finished, smearing lubricating grease on the installation surface and the matched hole sites, and standing for preparation;
2.1.5, mounting the fixing ring 4 on the centering device parent body 1, sequentially screwing two opposite bolts, adjusting the level, then pre-tightening the bolts in pairs to finish six groups of bolts, leveling, finally applying pre-tightening force specified by national standard, and screwing the angle adjusting bolts 5;
2.1.6, placing the sensor connecting shaft 8 in the middle of the angle adjusting shaft 7, aligning with the installation hole site, measuring the levelness of the end face, leveling, and screwing in the coaxial adjusting bolt 6 after detecting the parallelism of the end face;
2.1.7, corresponding the directions of all the adjusting bolts of the centering adjusting device to the mounting threaded holes;
2.2, installing a sensor:
2.2.1, installing a force sensor at the spigot of a sensor connecting shaft 8, ensuring that two axes are perpendicular to the end surfaces, tightly matching, aligning to a sensor installing bolt 9 and adding a gasket;
2.2.2, wiping the mounting surface, smearing lubricating grease on the mounting surface and the matching hole sites, and tightening the sensor connecting bolt 9 on the loading chain by using a torque wrench;
2.2.3, smearing lubricating grease on the middle threaded hole, and standing for preparation;
2.3, installing a guide shaft and a locking ring:
2.3.1, placing the assembled centering device on a horizontal platform, installing two locking rings 11 at a guide shaft, and connecting a middle threaded shaft of the force sensor 10;
2.3.2 screwing the guide shaft into the force sensor 10, and positioning the two end surfaces by using a locking ring 11;
2.3.3, the minimum axial distance between the end surfaces of the two locking rings 11 and the connecting surface of the two locking rings is ensured to correspond to the connecting direction of an assembled loading chain, the axes are coaxial, and the end surfaces are vertical;
step (3), hoisting the loading chain by using a crown block to finish connection with the electric actuating cylinder 13, aligning the hole site of the mounting bolt and the front surface of the main machine with the use adjustment direction of equipment, and then pre-tightening the bolt to finish installation of the loading chain;
Step (4), the mounting fixture ensures that the orientation of the fixture is parallel to one of the adjustment directions, bolts are screwed down, and the fixture wedge is mounted;
step (5), mounting a test piece, namely firstly pasting a wedge block of the test piece 22, preparing a centering sensor, and mounting the centering sensor on a clamp and keeping the centering sensor stationary;
Step (6), starting an electric cylinder to pre-fasten and fix the centering sensor by a clamp, and aligning the central axis of the test piece 22 with the axis of the loading chain;
step (7), pre-loading is carried out firstly, an indicating value of a torsion measuring area in the middle of the centering sensor 10 is read by using a strain gauge, the directions of the two clamps are calibrated, the directions of the two clamps are corresponding, and the torsion measuring indicating value of the middle area of the centering sensor is enabled to be a minimum value;
Step (8), adjusting the axiality and angle of each axial direction of the centering adjustment device, observing whether the values of each group of strain gauges on the centering sensor are changed singly corresponding to the axial strain values, adjusting the direction of an output shaft of the electric cylinder and the screwing depth to control the direction of the centering adjustment device to be perpendicular to a loading chain, adjusting the direction to be in one-to-one correspondence with the measuring direction of the centering sensor until the value change is minimum or less than 5% of the loading force and kept unchanged, and completing the installation and calibration of the centering adjustment device;
Step (9), screwing up the locking ring 11, firstly, loading an electric cylinder to a loading chain, keeping a loading state without a gap (a force value is kept unchanged or a fluctuation is small), inserting a spanner into two holes on the side surface of the locking ring 11, applying torque by reverse torsion, then keeping loading force, unloading, and smoothly changing an intermediate force value, wherein the output displacement of a grating ruler of the electric actuating cylinder 13 is linearly increased or decreased without play, and thus, locking the loading chain and installing the whole machine are completed;
Step (10), loading a centering sensor, detecting axial strain to determine the offset direction and the offset, firstly coarsely adjusting a V-shaped block 24 on a supporting frame 15 to reduce the numerical value variation, then adjusting the strain distribution type, adjusting an angle adjusting module to adjust the strain distribution to be in the same direction, adjusting the coaxiality, reducing the numerical value maintaining deviation or the deviation magnitude to be 10 -3, continuously loading and checking whether the numerical value coaxial direction variation or the variation is 5% of the loading numerical value, and finally completely unloading and repeating the test to finish the centering adjustment of the whole machine;
Pre-stretching the centering sensor 10, loading in elastic deformation, keeping the force at a force value of 5% of the yield limit, recording force sensor data and centering sensor data, checking the force and torque in two orthogonal directions perpendicular to the plane of a loading chain, firstly adjusting an angle adjusting bolt on a spherical surface to enable the torque in the direction perpendicular to the loading chain to be reduced to a minimum value or less than 5% of the loading force, not increasing with the increase of the loading force, adjusting the coaxiality adjusting direction again to enable the value of the force sensor and the centering sensor in the two orthogonal directions perpendicular to the plane of the loading chain to be minimum or less than 5% of the loading force, not increasing with the increase of the loading force, then keeping the force at a force value of 10% and 15% of the yield limit, repeatedly performing the steps, loading the force value to the elastic limit after the standard is met, keeping the loading force within 5% or a small variation or acquiring the displacement of the grating ruler output of the electric actuating cylinder to calculate the corresponding strain and the stress and the qualified range of the offset force;
and (12) simulating a loading chain, calculating displacement offset and angle offset according to the displacement and force values in the corresponding directions of the sensors, calculating adjustment amounts distributed to all adjustment shafts, adjusting corresponding adjustment bolts, and finally finishing the loading and calibration of the whole machine adjustment device.
The invention has the beneficial effects that:
1. the invention solves the problem that the coaxiality of the loading chain of the existing testing machine needs to be disassembled and cannot be adjusted in real time, and fills the blank of the prior art to a certain extent.
2. The invention solves the problem that the manual assembly and adjustment precision is uncontrollable, realizes one-time adjustment, has good stability, does not need repeated adjustment, has high reliability, simultaneously indexes the adjustment shaft, enables the adjustment quantity to reach 0.01mm, has a large adjustment range (+ -0.5 mm), enables the radius of the spherical surface of the parent body to reach the center of the loading test piece, and enables the adjustment angle to be +/-0.35 degrees.
3. The centering device and the clamp are in threaded connection combination, so that five degrees of freedom adjustment (two degrees of freedom of an orthogonal plane of the loading chain installation, two degrees of freedom of rotation and axial rotation of the loading chain) can be realized, and any angle and direction on the loading chain can be adjusted.
4. Parts with easy damage parts and high positioning precision requirements inside the adjusting device are all of standardized design, important parts are easy-to-work parts and standard parts of rotary parts, loss is reduced, service life of the device is prolonged, and meanwhile rigidity of the whole device is not affected.
5. The centering device is connected with the whole machine loading chain, so that the strength of the whole device is improved, the damage and deformation to the loading shaft are reduced, the flange connection is adopted, the centering gap in the loading chain is eliminated, the rigidity of the adjusting device has no influence on the rigidity of the whole machine system, and meanwhile, the adjusting module is fixedly connected with the whole machine loading chain, so that the external force borne by the adjusting device is borne by the whole machine, the strength of the device is improved, and the rigidity of the device is increased by the adjusting module arranged on the same parent body, so that the device is more stable and safer in the loading process.
6. The centering device is connected with the loading chain by adopting flange connection, so that the strength is improved, and the gap is eliminated; the centering device has strong adaptability, and the loading chains with different shaft diameters are installed by adjusting the sizes of the parent body and other components.
7. The centering device of the present invention can be mounted with other types of testing machines such as compression testing machines, torsion testing machines, bending testing machines, universal testing machines, etc.
8. The centering device provided by the invention can be matched with various types of fixtures, is small in space occupation, simple to operate and high in repeated adjustment precision, can improve experimental precision, and enables measurement data to be more accurate.
Drawings
The accompanying drawings, which are included to provide a further understanding of the application and are incorporated in and constitute a part of this specification, illustrate and explain the application and together with the description serve to explain the application.
FIG. 1 is a cross-sectional view of a centering adjustment apparatus of the present invention;
FIG. 2 is an isometric view of a centering detection device of the present invention;
FIG. 3 is an exploded view of the centering adjustment apparatus of the present invention;
FIG. 4 is a loading chain isometric view of the present invention;
FIG. 5 is a top plan view of the complete machine of the present invention;
FIG. 6 is a full cross-sectional view of the complete machine of the present invention;
FIG. 7 is a front view of the complete machine of the present invention;
FIG. 8 is an isometric view of the complete machine of the present invention;
FIG. 9 is a centering sensor (torsion) isometric view of the present invention;
FIG. 10 is a (coaxial) isometric view of a centering sensor of the present invention;
FIG. 11 is a cross-sectional view of a sensor attachment shaft of the present invention;
Fig. 12 is an isometric view of a centering device precursor of the present invention.
In the figure: 1. centering device parent; 2. an angle adjusting shaft connecting bolt; 3. a fixed ring mounting bolt; 4. a fixing ring; 5. an angle adjusting bolt; 6. a coaxial adjusting bolt; 7. an angle adjustment shaft; 8. a sensor connecting shaft; 9. a sensor connecting bolt; 10. a force sensor; 11. a locking ring; 12. a guide shaft; 13. an electrically operated cylinder; 14. an electric cylinder supporting frame; 15. a support frame; 16. a support block; 17. a guide post; 18. t-slot iron; 19. a positioning block; 20. profiling clamp; 21. a cover plate; 22. a test piece; 23. a clamp cover plate bolt; 24. a V-shaped block; 25. a support base; 26. a parent connecting bolt; 27. and (5) installing bolts on the electric cylinders.
Detailed Description
The details of the present invention and its specific embodiments are further described below with reference to the accompanying drawings.
Referring to fig. 1 to 12, the fatigue testing machine with adjustable coaxiality and the loading chain centering adjustment method solve the problem that the loading chain of the existing testing machine needs to be disassembled and cannot be adjusted in real time, and fill the blank of the prior art to a certain extent; the adjustment amount reaches 0.01 mm/grid, and the adjustment range is +/-1 mm and +/-0.35 degrees; the centering device can be used for adjusting five degrees of freedom, so that adjustment of any angle and direction on the loading chain can be realized; parts with easy damage parts and high positioning precision requirements in the adjusting device are all of standardized design; the centering device is connected with the loading chain of the whole machine by adopting a flange, so that the centering gap in the loading chain is eliminated, the external force borne by the adjusting device is borne by the whole machine, the strength of the device is improved, and the rigidity of the device is increased by installing the adjusting module on the same parent body, so that the device is more stable and safer in the loading process; the centering device has strong adaptability, and can be also provided with other types of testing machines by adjusting the sizes of the parent body and other components to install loading chains with different shaft diameters; the clamp can be matched with various types of clamps, the space occupation is small, the operation is simple, the adjustment precision is controllable, the stability is good, the repeated adjustment precision is high, the experimental precision can be improved, and the measurement data is more accurate.
Referring to fig. 4 to 7, the fatigue testing machine with adjustable coaxiality comprises a main shaft loading chain, a centering adjusting device, a centering sensor, a feedback device and a machine frame, wherein the centering adjusting mechanism is arranged on the main shaft loading chain, the main shaft loading chain is arranged on the machine frame, and the detecting and feedback mechanism is arranged on the machine frame and used for detecting and controlling the adjustment amount.
The main shaft loading chain comprises an electric cylinder 13, an electric cylinder mounting bolt 27, a sensor connecting bolt 9, a force sensor 10, a centering device parent body 1, a parent body connecting bolt 26, an angle adjusting shaft 7, an angle adjusting shaft connecting bolt 2, a sensor connecting shaft 8, a locking ring 11, a guide shaft 12, a profiling clamp 20, a cover plate 21, a cover plate bolt 23, a test piece 22, a supporting seat 25 and a V-shaped block 24; the electric actuating cylinder 13 is mounted on the supporting block 16 through six electric cylinder mounting bolts 27, the centering device parent body 1 is mounted on an output shaft of the electric actuating cylinder 13 through six inner hexagonal parent body connecting bolts 26, the angle adjusting shaft 7 is mounted on the centering device parent body 1 through six angle adjusting shaft connecting bolts 2, the force sensor 10 is mounted on the sensor connecting shaft 8 through 12 sensor connecting bolts 9, and the force sensor 10 is positioned on the sensor connecting shaft 8 through cylindrical pins; the guide shaft 12 on the V-shaped block 24 is screwed into the force sensor 10, the locking ring 11 is sleeved at the connecting shaft neck of the guide shaft 12, and the V-shaped block 24 is mounted on the support frame 15; the profiling clamp 20 is mounted on the guide shaft 12 through clamp connecting bolts, the test piece 22 is mounted on the profiling clamp 20, and the cover plate 21 is mounted on the profiling clamp 20 and fixed by cover plate bolts 23.
The centering adjustment device comprises a centering device parent body 1, an angle adjustment bolt 5, a parent body connection bolt 26, an angle adjustment shaft 7, an angle adjustment shaft connection bolt 2, a sensor connection shaft 8, an electric cylinder mounting bolt 27, a fixed ring 4, a fixed ring mounting bolt 3 and a coaxial adjustment bolt 6; the centering device parent body 1 is mounted on an electric cylinder output shaft through an electric cylinder mounting bolt 27, the fixed ring 4 is mounted on the centering device parent body 1 through a fixed ring mounting bolt 3, and the four angle adjusting bolts 5 are mounted on the fixed ring 4; the angle adjusting shaft 7 is connected in the centering device parent body 1 through the angle adjusting shaft connecting bolt 2, the sensor connecting shaft 8 is connected with the angle adjusting shaft 7 through the coaxial adjusting bolt 6, the coaxial adjusting bolt 6 is arranged on the angle adjusting shaft 7, the force sensor 10 is arranged on the sensor connecting shaft 8, is positioned by a positioning pin, and is positioned and adjusted on the V-shaped block 24. The V-block 24 is mounted on a support 15, which support 15 is mounted on the T-channel 18.
The centering sensor and the feedback device comprise a force sensor 10, a host, a processor, a centering test piece 22, a strain gauge, an electric cylinder grating ruler; the force sensor 10 is arranged on a loading chain, the host computer and the processor are connected with the force sensor 10 through USB data lines and are arranged on the frame for receiving and processing data, the grating ruler on the electric actuating cylinder 13 outputs displacement information to be transmitted to the host computer, the centering sensor is arranged on the loading chain, and the centering sensor is formed by attaching a strain gauge and a strain gauge to the test piece 22.
The electric cylinder 13 adopts a foldback type electric cylinder CDJ2D16-100Z-M9B-B, and the stroke of the electric cylinder is 100mm.
The machine frame comprises a guide post 17, a supporting block 16, a supporting frame 15, an electric cylinder supporting frame 14, a T-shaped groove iron 18, a positioning block 19, a supporting seat 25 and a V-shaped block 24; the four guide posts 17 are arranged on a supporting block 16 through adjusting nuts, the supporting block 16 is arranged on a left supporting frame 15 and a right supporting frame 15, and the supporting frames 15 are arranged on a T-shaped channel iron 18; the supporting seat 25 is installed on the T-shaped groove iron 18, and the electric cylinder supporting frame 14 is specifically illustrated to be installed on the supporting frame 15, and is installed on the supporting frame 15 by the V-shaped block 24, the positioning block 19 is installed on the T-shaped groove iron 18, and the electric cylinder 13 is also installed on the electric cylinder supporting frame 14.
The six-dimensional force sensor adopts HBM-U10M, and the maximum measuring range of the force sensor is 125KN.
The grating ruler adopts Heidenhain-Aelb-382c, and the maximum range of the grating ruler is 250mm.
Referring to fig. 1 to 7, the method for adjusting the load chain centering of the fatigue testing machine according to the present invention comprises the steps of:
Step (1), assembling a rack: firstly, four guide posts 17 are installed on two supporting blocks 16 to assemble a complete machine frame, two supporting frames 15 are installed on a T-shaped channel iron 18, the frame is installed on the two supporting frames 15 and locked by adjusting nuts, a positioning block 19 is installed on the T-shaped channel iron 18 and used for positioning the position of the frame on the T-shaped channel iron 18, an electric cylinder supporting frame 14 is installed on the supporting frames 15, an electric cylinder 13 is placed on the electric cylinder supporting frame 14, a supporting seat 25 is installed on the T-shaped channel iron 18, electric cylinder installation bolts 27 are inserted into a front flange of the electric cylinder to be installed (the two bolts are sequentially pre-tightened to prevent the supporting blocks 16 from being uneven), and frame assembly is completed;
Step (2), assembling all parts of a loading chain:
2.1, assembling centering adjusting device:
2.1.1, placing the centering device parent body 1 on a horizontal table, wiping the installation surface, smearing lubricating grease on the installation surface and the matched hole sites, and standing for preparation;
2.1.2, turning over the centering device matrix, placing the angle adjusting shaft 7 in the middle of the centering device matrix 1, aligning with the installation hole site, carrying out surface calibration level on the angle adjusting shaft 7, and installing the angle adjusting shaft connecting bolt 2;
2.1.3, sequentially screwing two opposite bolts, adjusting the level, then pre-tightening the bolts in pairs to finish six groups of bolts, leveling, and finally applying pre-tightening force specified by national standard;
2.1.4, wiping the installation surface of the overturning centering device parent body 1 after the installation is finished, smearing lubricating grease on the installation surface and the matched hole sites, and standing for preparation;
2.1.5, mounting the fixing ring 4 on the centering device parent body 1, sequentially screwing two opposite bolts, adjusting the level, then pre-tightening the bolts in pairs to finish six groups of bolts, leveling, finally applying pre-tightening force specified by national standard, and screwing the angle adjusting bolts 5 (the bolts contact the surface of the angle connecting shaft);
2.1.6, placing the sensor connecting shaft 8 in the middle of the angle adjusting shaft 7, aligning with the mounting hole site, leveling after measuring the levelness of the end surface, screwing in a bolt, screwing in the bolt after detecting the parallelism of the end surface, and screwing in the coaxial adjusting bolt 6 (the bolt contacts the surface of the sensor connecting shaft);
2.1.7, the directions of all the adjusting bolts of the centering adjusting device are corresponding to the installing threaded holes (ensuring the correctness and uniqueness of the adjusting direction);
2.2, installing a sensor:
2.2.1, installing a force sensor at the spigot of a sensor connecting shaft 8, ensuring that two axes are perpendicular to the end surfaces and are tightly matched with each other, aligning to a sensor installing bolt 9, and adding a gasket (preventing signal wires from bending and damaging) to adjust the drilling direction;
2.2.2, wiping the mounting surface, smearing lubricating grease on the mounting surface and the matching hole sites, and tightening the sensor connecting bolt 9 on the loading chain by using a torque wrench;
2.2.3, smearing lubricating grease on the middle threaded hole, and standing for preparation;
2.3, installing a guide shaft and a locking ring:
2.3.1, placing the assembled centering device on a horizontal platform, installing two locking rings 11 at a guide shaft, and connecting a middle threaded shaft of the force sensor 10;
2.3.2 screwing the guide shaft into the force sensor 10, and positioning the two end surfaces by using a locking ring 11;
2.3.3, the minimum axial distance between the end surfaces of the two locking rings 11 and the connecting surface of the two locking rings is ensured to correspond to the connecting direction of an assembled loading chain, the axes are coaxial, and the end surfaces are vertical;
step (3), installing the assembled loading chain: the loading chain is lifted by a crown block to be connected with the electric actuating cylinder 13, and meanwhile, the installation bolt hole site is aligned, the equipment use adjusting direction is parallel to the front surface of the host machine, and then the loading chain is installed by pre-tightening the bolt;
Step (4), the mounting fixture ensures that the orientation of the fixture is parallel to one of the adjustment directions, bolts are screwed down, and the fixture wedge is mounted;
step (5), mounting a test piece, namely firstly pasting a wedge block of the test piece 22, preparing a centering sensor, and mounting the centering sensor on a clamp and keeping the centering sensor stationary;
Step (6), starting an electric cylinder to pre-fasten and fix the centering sensor by a clamp, and aligning the central axis of the test piece 22 with the axis of the loading chain;
Step (7), pre-loading is carried out firstly, an indicating value of a torsion area measured in the middle of the centering sensor 10 is read by using a strain gauge, the directions of the two clamps are calibrated, the directions of the two clamps are corresponding, the torsion measurement indicating value of the middle area of the centering sensor is enabled to be a minimum value (the directions of the two clamps are controlled by adjusting the threaded connection length of the clamps);
Step (8), adjusting the axiality and angle of each axial direction of the centering adjustment device, observing whether the values of each group of strain gauges on the centering sensor are changed singly corresponding to the axial strain values, adjusting the direction of an output shaft of the electric cylinder and the screwing depth to control the direction of the centering adjustment device to be perpendicular to a loading chain, adjusting the direction to be in one-to-one correspondence with the measuring direction of the centering sensor until the value change is minimum or less than 5% of the loading force and kept unchanged, and completing the installation and calibration of the centering adjustment device;
Step (9), screwing up the locking ring 11, firstly, loading an electric cylinder to a loading chain, keeping a loading state without a gap (a force value is kept unchanged or a fluctuation is small), inserting a spanner into two holes on the side surface of the locking ring 11, applying torque by reverse torsion, then keeping loading force, unloading, and smoothly changing an intermediate force value, wherein the output displacement of a grating ruler of the electric actuating cylinder 13 is linearly increased or decreased without play, and thus, locking the loading chain and installing the whole machine are completed;
Step (10), loading a centering sensor, detecting axial strain to determine the offset direction and the offset, firstly coarsely adjusting a V-shaped block 24 on a supporting frame 15 to reduce the numerical variation, then adjusting the strain distribution type, adjusting an angle adjusting module to adjust the strain distribution to be in the same direction, having monotonicity, (screwing one end into the depth while the other end is correspondingly unscrewed from the same depth to prevent overload damage or deformation of a part during adjustment), adjusting coaxiality, keeping the numerical deviation to be reduced or the deviation order to be 10 -3, continuously loading to check whether the numerical coaxial variation or the variation is 5% of the loading numerical value, finally completely unloading and repeating the test (firstly adjusting the loading chain on one side, and after reaching the tensile standard, if the loading chain on the other side is not required to be adjusted until the loading chain is unloaded, repeating the test for a plurality of times), and finishing centering adjustment of the whole machine;
Pre-stretching the centering sensor 10, loading in elastic deformation, keeping the force at a force value of 5% of the yield limit, recording force sensor data and centering sensor data, checking the force and torque in two orthogonal directions perpendicular to the plane of a loading chain, firstly adjusting an angle adjusting bolt on a spherical surface to enable the torque in the direction perpendicular to the loading chain to be reduced to a minimum value or less than 5% of the loading force, not increasing with the increase of the loading force, adjusting the coaxiality adjusting direction again to enable the value of the force sensor and the centering sensor in the two orthogonal directions perpendicular to the plane of the loading chain to be minimum or less than 5% of the loading force, not increasing with the increase of the loading force, then keeping the force at a force value of 10% and 15% of the yield limit, repeatedly performing the steps, loading the force value to the elastic limit after the standard is met, keeping the loading force within 5% or a small variation or acquiring the displacement of the grating ruler output of the electric actuating cylinder to calculate the corresponding strain and the stress and the qualified range of the offset force;
And (12) simulating a loading chain by abqus simulation software, calculating displacement offset and angle offset according to the displacement and the force value of the sensor corresponding to the direction, calculating adjustment amounts distributed to all adjustment shafts, adjusting corresponding adjustment bolts, and finally finishing the loading calibration of the whole machine adjustment device.
And loading and calibrating the whole machine adjusting device, and performing a formal tensile test.
The above description is only a preferred example of the present invention and is not intended to limit the present invention, but various modifications and variations can be made to the present invention by those skilled in the art. Any modification, equivalent replacement, improvement, etc. of the present invention should be included in the protection scope of the present invention.
Claims (4)
1. A load chain centering adjustment method of a fatigue testing machine is characterized by comprising the following steps of:
The device is realized by a fatigue testing machine with adjustable coaxiality, the fatigue testing machine comprises a main shaft loading chain, a centering adjusting device, a centering sensor, a feedback device and a frame, wherein the centering adjusting device is arranged on the main shaft loading chain, the main shaft loading chain is arranged on the frame, and the centering sensor and the feedback device are arranged on the frame for detecting and controlling the adjustment quantity; the spindle loading chain is: the electric actuating cylinder (13) is arranged on the supporting block (16), the centering device parent body (1) is arranged on the output shaft of the electric actuating cylinder (13), the angle adjusting shaft (7) is arranged on the centering device parent body (1), the force sensor (10) is arranged on the sensor connecting shaft (8), and the force sensor (10) is positioned on the sensor connecting shaft (8) through a cylindrical pin; the guide shaft (12) is screwed into the force sensor (10), the locking ring (11) is sleeved at the connecting shaft neck of the guide shaft (12), the guide shaft (12) is arranged on the V-shaped block (24), and the V-shaped block (24) is arranged on the supporting frame (15); the profiling clamp (20) is arranged on the guide shaft (12), the test piece (22) is arranged on the profiling clamp (20), and the cover plate (21) is arranged on the profiling clamp (20) and is fixed by the cover plate bolt (23);
the centering adjustment device is as follows: the centering device parent body (1) is arranged on an electric cylinder output shaft through an electric cylinder mounting bolt (27), the fixed ring (4) is arranged on the centering device parent body (1) through a fixed ring mounting bolt (3), and the four angle adjusting bolts (5) are arranged on the fixed ring (4); the angle adjusting shaft (7) is connected in the centering device parent body (1), the sensor connecting shaft (8) is connected with the angle adjusting shaft (7) through a coaxial adjusting bolt (6), the coaxial adjusting bolt (6) is arranged on the angle adjusting shaft (7), the force sensor (10) is arranged on the sensor connecting shaft (8), the V-shaped block (24) is arranged on the supporting frame (15), and the supporting frame (15) is arranged on the T-shaped groove iron (18);
The centering sensor and the feedback device are as follows: the force sensor (10) is arranged on the loading chain, the host computer and the processor are connected with the force sensor (10) through USB data lines and are arranged on the frame, the grating ruler on the electric actuating cylinder (13) outputs displacement information to be transmitted to the host computer, the centering sensor is arranged on the loading chain, and the centering sensor is formed by attaching a strain gauge and a strain gauge to the test piece (22);
The method comprises the following steps:
Step (1), assembling a rack: firstly, four guide posts (17) are arranged on two supporting blocks (16) to assemble a complete machine frame, two supporting frames (15) are arranged on T-shaped channel irons (18), the frame is arranged on the two supporting frames (15) and locked by adjusting nuts, positioning blocks (19) are arranged on the T-shaped channel irons (18) and used for positioning the frame at the position on the T-shaped channel irons (18), an electric cylinder supporting frame (14) is arranged on the supporting frames (15), an electric cylinder (13) is placed on the electric cylinder supporting frame (14), a supporting seat (25) is arranged on the T-shaped channel irons (18), and electric cylinder mounting bolts (27) are inserted into a front flange of the electric cylinder to be mounted, so that frame assembly is completed;
Step (2), assembling all parts of a loading chain:
2.1, assembling a centering adjustment device;
2.2, installing a sensor;
2.3, installing a guide shaft and a locking ring;
step (3), hoisting the loading chain by using a crown block to finish connection with the electric actuating cylinder (13), aligning the hole site of the mounting bolt and the use adjusting direction of equipment to be parallel to the front surface of the host machine, and then pre-tightening the bolt to finish installation of the loading chain;
Step (4), the mounting fixture ensures that the orientation of the fixture is parallel to one of the adjustment directions, bolts are screwed down, and the fixture wedge is mounted;
Step (5), mounting a test piece, namely firstly adhering a wedge block of the test piece (22) and preparing a centering sensor, and mounting the centering sensor on a clamp and keeping the centering sensor stationary;
Step (6), starting an electric cylinder to pre-fasten and fix the centering sensor by a clamp, and aligning the central axis of the test piece (22) with the axis of the loading chain;
step (7), pre-loading is carried out firstly, an indicating value of a torsion measuring area in the middle of the centering sensor is read by using a strain gauge, the directions of the two clamps are calibrated, the directions of the two clamps are corresponding, and the torsion measuring indicating value of the middle area of the centering sensor is enabled to be a minimum value;
Step (8), adjusting the axiality and angle of each axial direction of the centering adjustment device, observing whether the values of each group of strain gauges on the centering sensor are changed singly corresponding to the axial strain values, adjusting the direction of an output shaft of the electric cylinder and the screwing depth to control the direction of the centering adjustment device to be perpendicular to a loading chain, adjusting the direction to be in one-to-one correspondence with the measuring direction of the centering sensor until the value change is minimum or less than 5% of the loading force and kept unchanged, and completing the installation and calibration of the centering adjustment device;
Step (9), screwing the locking ring (11), firstly, loading an electric cylinder onto a loading chain without clearance to maintain a loading state, inserting a spanner into two holes on the side surface of the locking ring (11), applying torque by reverse torsion, and then maintaining loading force and unloading, wherein the change of an intermediate force value is gentle, the output displacement of a grating scale of the electric cylinder (13) is free from play and is linearly increased and decreased, and the locking of the loading chain and the installation of the whole machine are completed;
Step (10), loading a centering sensor, detecting axial strain to determine the offset direction and the offset, firstly coarsely adjusting a V-shaped block (24) on a supporting frame (15) to reduce the numerical value variation, then adjusting the strain distribution type, adjusting an angle adjusting module to adjust the strain distribution to be in the same direction, adjusting the coaxiality, reducing the numerical value maintaining deviation or the deviation magnitude to be 10 -3, continuously loading and checking whether the numerical value coaxial direction is changed or the variation is 5% of the loading value, and finally completely unloading and repeating the test to finish centering adjustment of the whole machine;
pre-stretching a centering sensor, loading in elastic deformation, keeping force at a force value of 5% of a yield limit, recording force sensor data and centering sensor data, checking the force and torque in two orthogonal directions perpendicular to a loading chain plane, firstly adjusting an angle adjusting bolt on a spherical surface to enable the torque in the direction perpendicular to the loading chain to be reduced to a minimum value or less than 5% of the loading force, not increasing with the increase of the loading force, adjusting the coaxiality adjusting direction again to enable the value of the force sensor and the centering sensor in the two orthogonal directions perpendicular to the loading chain plane to be minimum value or less than 5% of the loading force, not increasing with the increase of the loading force, then keeping the force at a force value of 10% and 15% of the yield limit, repeatedly performing the steps, loading the force value to the elastic limit after the standard is met, keeping the loading force within 5% or a small variation or acquiring the displacement of a grating ruler output of an electric actuating cylinder to calculate the corresponding strain and stress within a qualified range of the biasing force;
and (12) simulating a loading chain, calculating displacement offset and angle offset according to the displacement and force values in the corresponding directions of the sensors, calculating adjustment amounts distributed to all adjustment shafts, adjusting corresponding adjustment bolts, and finally finishing the loading and calibration of the whole machine adjustment device.
2. The method for centering a load chain of a fatigue testing machine according to claim 1, wherein: the assembly centering adjustment device described in the step (2.1) specifically includes:
2.1.1, placing the centering device parent body (1) on a horizontal table, wiping the installation surface, smearing lubricating grease on the installation surface and the matched hole site, and standing for preparation;
2.1.2, turning over the centering device matrix, placing the angle adjusting shaft (7) in the middle of the centering device matrix (1), aligning with the mounting hole site, carrying out surface calibration level on the angle adjusting shaft (7), and mounting an angle adjusting shaft connecting bolt (2);
2.1.3, sequentially screwing two opposite bolts, adjusting the level, then pre-tightening the bolts in pairs to finish six groups of bolts, leveling, and finally applying pre-tightening force specified by national standard;
2.1.4, wiping the installation surface of the overturning centering device matrix (1) after the installation is finished, smearing lubricating grease on the installation surface and the matched hole sites, and standing for preparation;
2.1.5, installing the fixing ring (4) on the centering device parent body (1), sequentially screwing two opposite bolts, adjusting the level, then pre-tightening the bolts in pairs to finish six groups of bolts, leveling, finally applying pre-tightening force specified by national standard, and screwing the angle adjusting bolts (5);
2.1.6, placing a sensor connecting shaft (8) in the middle of the angle adjusting shaft (7), aligning with the mounting hole site, leveling after measuring the levelness of the end surface, and screwing in a coaxial adjusting bolt (6) after detecting the parallelism of the end surface;
and 2.1.7, corresponding the directions of all the adjusting bolts of the centering adjusting device to the mounting threaded holes.
3. The method for centering a load chain of a fatigue testing machine according to claim 1, wherein: the sensor is installed in the step (2.2), specifically:
2.2.1, installing a force sensor at the spigot of a sensor connecting shaft (8), ensuring that two axes are perpendicular to the end surfaces and are tightly matched with each other, aligning to a sensor connecting bolt (9), and adding a gasket;
2.2.2, wiping the mounting surface, smearing lubricating grease on the mounting surface and the matching hole sites, and tightening a sensor connecting bolt (9) on the loading chain by using a torque wrench;
And 2.2.3, smearing lubricating grease on the middle threaded hole, and standing for preparation.
4. The method for centering a load chain of a fatigue testing machine according to claim 1, wherein: the step (2.3) of installing the guide shaft and the locking ring is specifically as follows:
2.3.1, placing the assembled centering device on a horizontal platform, installing two locking rings (11) at a guide shaft, and connecting a middle threaded shaft of a force sensor (10);
2.3.2 screwing the guide shaft into the force sensor (10), and positioning the two end surfaces by using a locking ring (11);
2.3.3, the minimum axial distance between the end faces of the two locking rings (11) and the contact surface is ensured to correspond to the connection direction of an assembled loading chain, the axis is coaxial, and the end faces are vertical.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911211300.3A CN110836830B (en) | 2019-12-02 | 2019-12-02 | Fatigue testing machine capable of adjusting coaxiality and load chain centering adjustment method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911211300.3A CN110836830B (en) | 2019-12-02 | 2019-12-02 | Fatigue testing machine capable of adjusting coaxiality and load chain centering adjustment method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN110836830A CN110836830A (en) | 2020-02-25 |
| CN110836830B true CN110836830B (en) | 2024-04-30 |
Family
ID=69578032
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911211300.3A Active CN110836830B (en) | 2019-12-02 | 2019-12-02 | Fatigue testing machine capable of adjusting coaxiality and load chain centering adjustment method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN110836830B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111578892B (en) * | 2020-04-13 | 2021-08-27 | 湖南省计量检测研究院 | Strain gauge calibration device and method based on hydraulic element driving |
| CN115266060B (en) * | 2022-07-27 | 2023-06-20 | 中国航发沈阳发动机研究所 | Concentricity adjusting device and method for fatigue test of elastic supporting structure |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2835989Y (en) * | 2005-09-19 | 2006-11-08 | 重庆建设摩托车股份有限公司 | Device for checking cupping testing machine |
| CN104316396A (en) * | 2014-10-30 | 2015-01-28 | 凯尔测控试验系统（天津）有限公司 | XYZ triaxial centering regulating device for mechanical testing machine |
| CN104567635A (en) * | 2014-12-23 | 2015-04-29 | 中国航空工业集团公司北京航空材料研究院 | Device for rapidly detecting coaxial degree of clamps of test machine |
| CN104880318A (en) * | 2015-05-25 | 2015-09-02 | 南车戚墅堰机车有限公司 | Movable support adjusting device of diesel engine |
| CN105628487A (en) * | 2015-12-23 | 2016-06-01 | 吉林大学 | Combined load mode mechanical-electrical and thermal-magnetic coupling material performance in-situ test instrument and method |
| CN108827804A (en) * | 2018-07-12 | 2018-11-16 | 浙江工业大学 | A kind of resonant mode fatigue tester dynamic load error online compensation method |
| CN110231235A (en) * | 2019-07-09 | 2019-09-13 | 中国科学院金属研究所 | The experimental provision and experimental method of the two-way alternating bending of steel wire in a kind of test high and low temperature environment |
| CN211179397U (en) * | 2019-12-02 | 2020-08-04 | 吉林大学 | Fatigue testing machine capable of adjusting coaxiality |
-
2019
- 2019-12-02 CN CN201911211300.3A patent/CN110836830B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2835989Y (en) * | 2005-09-19 | 2006-11-08 | 重庆建设摩托车股份有限公司 | Device for checking cupping testing machine |
| CN104316396A (en) * | 2014-10-30 | 2015-01-28 | 凯尔测控试验系统（天津）有限公司 | XYZ triaxial centering regulating device for mechanical testing machine |
| CN104567635A (en) * | 2014-12-23 | 2015-04-29 | 中国航空工业集团公司北京航空材料研究院 | Device for rapidly detecting coaxial degree of clamps of test machine |
| CN104880318A (en) * | 2015-05-25 | 2015-09-02 | 南车戚墅堰机车有限公司 | Movable support adjusting device of diesel engine |
| CN105628487A (en) * | 2015-12-23 | 2016-06-01 | 吉林大学 | Combined load mode mechanical-electrical and thermal-magnetic coupling material performance in-situ test instrument and method |
| CN108827804A (en) * | 2018-07-12 | 2018-11-16 | 浙江工业大学 | A kind of resonant mode fatigue tester dynamic load error online compensation method |
| CN110231235A (en) * | 2019-07-09 | 2019-09-13 | 中国科学院金属研究所 | The experimental provision and experimental method of the two-way alternating bending of steel wire in a kind of test high and low temperature environment |
| CN211179397U (en) * | 2019-12-02 | 2020-08-04 | 吉林大学 | Fatigue testing machine capable of adjusting coaxiality |
Non-Patent Citations (1)
| Title |
|---|
| 负泊松比蜂窝结构的力学性能测试及装置柔顺控制策略研究;刘泽洋;中国优秀硕士学位论文全文数据库 基础科学辑;20191130;27-29 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN110836830A (en) | 2020-02-25 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110726636B (en) | Four-axis centering adjustment system and method for biaxial tensile testing machine | |
| CN110595685B (en) | Calibration device and calibration method for contrast type six-dimensional force sensor | |
| CN204881971U (en) | Static test bench of maring of torque sensor | |
| CN110836830B (en) | Fatigue testing machine capable of adjusting coaxiality and load chain centering adjustment method | |
| CN111044215B (en) | Centering reference type torque sensor calibration and test bench | |
| CN113237417B (en) | Device, system and method for testing bearing clearance of air bearing motor | |
| CN211179397U (en) | Fatigue testing machine capable of adjusting coaxiality | |
| US5377549A (en) | Alignment device and method of aligning | |
| CN110726637B (en) | Centering adjustment device and centering adjustment method | |
| CN210603720U (en) | Contrast type calibration device for six-dimensional force sensor | |
| CN211179398U (en) | Coaxiality adjusting device for testing machine | |
| CN211179394U (en) | Four-axis centering adjustment system for biaxial tensile testing machine | |
| CN106679913B (en) | Metamaterial vibration isolator mechanical property testing device | |
| TWI461676B (en) | Establish the adjustment of the reference axis and the datum | |
| CN110726635B (en) | Coaxiality adjusting system and coaxiality dimension reduction adjusting method based on strain gauge | |
| CN211179395U (en) | Centering adjusting device | |
| CN211179396U (en) | Coaxiality adjusting system based on strain gauge | |
| CN109489994B (en) | Double-ring dynamic simulation master pin single four-wheel aligner calibrating device | |
| CN110836831B (en) | Coaxiality adjusting device and method for testing machine | |
| CN221224226U (en) | Shafting alignment device for engine test | |
| CN111999021A (en) | Device and method for testing static performance of foil of dynamic pressure radial gas bearing | |
| CN114963948A (en) | Device for measuring deviation between axis of delivery pump and axis of motor and determination method | |
| CN113916168B (en) | Involute template for large gear measuring instrument field | |
| CN219675676U (en) | Concrete axial strain measuring device | |
| CN218546135U (en) | Bending rigidity test bed for precise planetary reducer |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |