CN211179395U - Centering adjusting device - Google Patents

Abstract

The utility model relates to a centering adjusting device belongs to axiality calibration field. The device comprises a main shaft loading chain, a centering adjusting mechanism, a detecting and feedback mechanism and a rack, wherein the centering adjusting mechanism is arranged on the main shaft loading chain, the main shaft loading chain is arranged on the rack, and the detecting and feedback mechanism is arranged on the rack and used for detecting and controlling the adjustment amount. The device is installed on the testing machine, can realize the adjustment of any angle and direction on the loading chain in the adjustment of five degrees of freedom (loading chain installation quadrature plane two degrees of freedom, rotate two degrees of freedom and loading chain axial rotation), not only can realize carrying out unidirectional stretching on unipolar tensile testing machine, but also can add one set of adjusting device again and realize bidirectional stretching's centering adjustment, device suitability is strong, also can install other kinds of testing machine again, can match different shaft footpath anchor clamps or loading chain simultaneously, the space occupies for a short time, the operation is simple, can repeatedly adjust, the experiment precision can be improved, make measured data more accurate.

Description

Centering adjusting device

Technical Field

The utility model relates to a axiality calibration field, in particular to centering adjusting device, centering adjusting device install and calibrate the axiality of loading chain on the testing machine.

Background

With the development of economy and the progress of science and technology, the tester industry is developed vigorously like the spring bamboo shoots after rain, various testers with different purposes are continuously emerged, the tester can measure the mechanical property, the process property, the internal defect, the dynamic unbalance amount of the checking rotating part and the like of materials, and the tester is more and more widely applied to the fields of the mechanical industry and the like. The traditional coaxiality adjusting mode of the testing machine is manual adjustment, but the manual adjustment is low in efficiency, different in standard and limited in adjusting amount, and the testing machine is easy to damage, the precision does not reach the standard, the stability is poor and the like, so that the centering adjusting device is designed for solving the problems.

Disclosure of Invention

The utility model aims at providing a centering adjusting device, which solves the problem that the coaxiality of the loading chain of the existing testing machine needs to be disassembled and the loading chain can not be adjusted in real time, and fills the blank of the prior art to a certain extent; the device solves the problems that the adjustment precision of manual assembly is not controllable, adjustment is realized once, the stability is good, repeated adjustment is not needed, the reliability is high, the adjustment shaft is indexed, the adjustment amount reaches 0.01mm, the adjustment range is large (plus or minus 0.5 mm), the angular adjustment spherical radius on a matrix reaches the center of a loading test piece, and the adjustment angle can be plus or minus 0.35 degrees; the combination of the device and the clamp rotary table can realize the adjustment of five degrees of freedom (the loading chain is provided with two degrees of freedom of an orthogonal plane, rotates two degrees of freedom and axially rotates the loading chain), and can realize the adjustment of any angle and direction on the loading chain; the easily-damaged parts and the parts with high positioning precision requirement in the adjusting device are in standardized design, and easily-processed parts such as pin sleeves and gaskets and standard parts are adopted, so that the loss is reduced, the service life of the device is prolonged, and the rigidity of the whole device is not influenced; the device does not bear the load of a test loading chain, 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 rack, 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 arranging the adjusting module on the same matrix, so that the device is more stable and safer in the loading process; the connection loading chain adopts flange connection to improve the strength and eliminate the gap; each middle adjusting block is positioned by two pin shafts on the parent body and the lower surface of the parent body (one surface is provided with two pins); the loading chain device is arranged on the testing machine, has strong adaptability, and is used for installing loading chains with different shaft diameters by adjusting the sizes of the parent body and other parts; other types of testing machines such as compression testing machines, torsion testing machines, bending testing machines, universal testing machines, etc. can also be installed; the matched clamps are various in types, small in occupied space, simple to operate and high in repeated adjustment precision; simultaneously, unidirectional stretching on a uniaxial tensile testing machine can be realized, and a set of adjusting device can be additionally arranged to realize bidirectional stretching, so that the experiment precision can be improved, and the measured data is more accurate.

The above object of the utility model is realized through following technical scheme:

the centering adjusting device is integrally installed on the testing machine and comprises a main shaft loading chain, a centering adjusting mechanism, a detection and feedback mechanism and a rack, wherein the centering adjusting mechanism is installed on the main shaft loading chain, the main shaft loading chain is installed on the rack, and the detection and feedback mechanism is installed on the rack and used for detecting and controlling the adjustment amount.

The main shaft loading chain is as follows: the electric actuating cylinder 28 is arranged on the lower platform 17, the electric cylinder connecting shaft 27 is arranged on an output shaft of the electric actuating cylinder 28, the six-dimensional force sensor 15 is arranged on the main shaft 13, the six-dimensional force sensor 15 is positioned on the main shaft 13 through the positioning pin 11, the clamp connecting shaft 16 is arranged on the six-dimensional force sensor 15, and the upper clamp 20 is arranged on the clamp connecting shaft 16; the test piece 23 is tightly pressed and installed in the upper clamp 20 by the cover plate 21, the lower clamp 24 is installed on a support seat 25 through a flange, the support seat 25 is installed on an electric cylinder connecting shaft 27 through a flange, and the electric cylinder connecting shaft 27 is connected with an electric actuating cylinder 28 through a flange; the main shaft 13 penetrates into the centering fixing sleeve 2 and is fixed on the upper top cover 31 by the locking nut 1.

The centering adjusting mechanism is as follows: the eight adjusting shafts 8 are arranged on the parent body 4, the adjusting shafts 8 are arranged in a middle adjusting block 9, and the locking pin 7 is inserted into the middle adjusting block 9 to lock the adjusting shafts 8; the pin shaft sleeve 12 is arranged on the parent body 4, the positioning pin 11 is arranged on the pin shaft sleeve 12, and the middle adjusting block 9 is positioned and arranged on the parent body 4 by the two positioning pins 11; the coaxiality adjusting sleeve 3 is sleeved on the main shaft 13, the angle adjusting sleeve 5 is sleeved on the main shaft 13, the coaxiality adjusting sleeve 3 is installed on the end face of the parent body 4, and the angle adjusting sleeve 5 is installed on the lower end face of the parent body 4; the round top 6 is arranged on the middle adjusting block 9, the square top 10 is arranged on the middle adjusting block 9, and the matrix 4 is arranged on the shaft shoulder of the main shaft 13.

The detection and feedback mechanism is as follows: the six-dimensional force sensor 15 is installed on the loading chain, the host and the processor are connected with the six-dimensional force sensor 15 through a USB data line, the host and the processor are installed on the rack, and the grating ruler on the electric actuating cylinder 28 outputs displacement information to be transmitted to the host.

The electric actuating cylinder 28 adopts a folding type electric cylinder CDJ2D16-100Z-M9B-B, and the stroke of the electric cylinder is 100 mm.

The frame is as follows: the upper top cover 31 is mounted on four guide posts 30 through adjusting nuts 29, the guide posts 30 are mounted on the lower platform 17, and the lower platform 17 is mounted on the vibration isolation table 18.

The beneficial effects of the utility model reside in that:

1. the utility model provides a current testing machine loading chain axiality need dismantle the loading chain, problem that can not adjust in real time, and filled prior art's blank to a certain extent.

2. The utility model provides a manual assembly adjustment precision uncontrollable, realized the adjustment once can, stability is good need not repeated adjustment reliability height, carries out the graduation to the adjusting spindle simultaneously, makes the adjustment volume reach 0.01mm, and adjustment range is big (± 0.5 mm), and angle adjustment spherical radius reachs the loading test piece center on the matrix, can make angle of adjustment be ± 0.35.

3. The utility model discloses the adjustment of five degrees of freedom can be realized to device and anchor clamps revolving stage combination (two degrees of freedom in loading chain installation orthogonal plane, rotate two degrees of freedom and loading chain axial rotation) and any angle and direction on the loading chain can be realized.

4. The utility model discloses an inside vulnerable part of adjusting device and the part that positioning accuracy required height all are standardized design, adopt easy machined parts such as cotter, gasket and standard component, reduce the life that the loss has improved the device and whole device rigidity does not have the influence simultaneously.

5. The utility model discloses do not bear the load of experimental loading chain, adjusting device's rigidity does not have the influence to complete machine system rigidity, and adjusting module connects firmly with the frame simultaneously, makes the external force that adjusting device received undertake by the complete machine, has improved the utility model discloses an intensity and adjusting module install the rigidity that has increased the device on same parent make its loading in-process more stable and safe.

6. The utility model adopts flange connection to improve the strength and eliminate the clearance in the connection loading chain; each middle adjusting block is positioned by two pin shafts on the parent body and the lower surface of the parent body (one surface is provided with two pins).

7. The utility model discloses install on the testing machine, device suitability is strong, and the size through adjustment parent and other parts is used for installing the loading chain of different footpaths.

8. The utility model discloses other kinds of testing machine such as compression testing machine, torsion testing machine, bending test machine, universal tester etc. are again installed to the mountable.

9. The utility model discloses the kind that can match anchor clamps is various, and the space occupies for a short time, easy operation, and repeated adjustment precision is high.

10. The utility model discloses not only can realize carrying out unidirectional stretching on unipolar tensile testing machine, but also can add one set of adjusting device again and realize biaxial stretching, can improve the experiment precision, make measured data more accurate.

Drawings

The accompanying drawings, which are included to provide a further understanding of the invention and are incorporated in and constitute a part of this application, illustrate example embodiments of the invention and together with the description serve to explain the invention without limitation.

Fig. 1 is a top view of the centering adjustment mechanism of the present invention;

FIG. 2 is a front view of the centering adjustment mechanism of the present invention;

FIG. 3 is an exploded view of the centering adjustment mechanism of the present invention;

FIG. 4 is a front view of the centering adjustment mechanism of the present invention;

fig. 5 is a full sectional view of the centering adjustment mechanism of the present invention;

fig. 6 is a partial sectional view of the centering adjustment mechanism of the present invention;

FIG. 7 is a front view of the whole machine of the present invention;

FIG. 8 is a left side view of the whole machine of the present invention;

fig. 9 is a front view of the loading chain installation of the present invention;

FIG. 10 is a partial sectional view of the complete machine loading chain of the present invention;

fig. 11 is an axonometric view of the parent body of the centering device of the present invention.

In the figure: 1. locking the nut; 2. centering the fixed sleeve; 3. a coaxiality adjusting sleeve; 4. a parent body; 5. an angle adjusting sleeve; 6. a circular plug; 7. a locking pin; 8. an adjustment shaft; 9. a middle adjusting block; 10. a square plug; 11. positioning pins; 12. a pin bush; 13. a main shaft; 14. a sensor connecting bolt; 15. a six-dimensional force sensor; 16. a clamp connecting shaft; 17. a lower platform; 18. a vibration isolation table; 19. an upper clamp connecting bolt; 20. an upper clamp; 21. a cover plate; 22. a cover plate bolt; 23. a test piece; 24. a lower clamp; 25. a supporting seat; 26. the lower clamp is connected with a bolt; 27. an electric cylinder connecting shaft; 28. an electrically actuated cylinder; 29. adjusting the nut; 30. a guide post; 31. and (4) a top cover.

Detailed Description

The details of the present invention and its embodiments are further described below with reference to the accompanying drawings.

Referring to fig. 1 to 11, the centering adjustment device of the present invention solves the problems that the centering adjustment of the loading chain of the testing machine is low in adjustment precision and the loading chain needs to be disassembled, and the real-time centering adjustment cannot be realized, has good stability and high reliability without repeated adjustment, and simultaneously indexes the adjustment shaft, so that the adjustment amount reaches 0.01mm, and the adjustment range reaches (± 0.5mm and ± 0.35 °); the device can realize the adjustment of five degrees of freedom (two degrees of freedom of a loading chain installation orthogonal plane, two degrees of freedom of rotation and axial rotation of the loading chain), and can realize the adjustment of any angle and direction on the loading chain; the device does not bear the load of a test loading chain in the loading chain, the installation 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 rack, 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 matrix, so that the device is more stable and safer in the loading process; the device installs on the testing machine, not only can realize carrying out unidirectional stretching on unipolar tensile testing machine, but also can add one set of adjusting device again and realize bidirectional stretching's centering adjustment, and device suitability is strong, also can install other kinds of testing machine again, can match different footpath anchor clamps or loading chain simultaneously, and the space occupies for a short time, easy operation, but repeated adjustment can improve the experiment precision, makes measured data more accurate.

Referring to fig. 6 to 10, the utility model discloses a centering adjusting device, integral erection is on the testing machine, including main shaft loading chain, centering guiding mechanism, detection and feedback mechanism, frame, centering guiding mechanism installs on main shaft loading chain, and main shaft loading chain installs in the frame, detects and feedback mechanism installs in the frame for detect and control the regulating variable.

The main shaft loading chain comprises an electric action cylinder 28, an electric cylinder connecting shaft 27, a six-dimensional force sensor 15, a main shaft 13, a clamp connecting shaft 16, an upper clamp 20, a cover plate 21, a test piece 23, a lower clamp 24, a supporting seat 25 and a centering fixing sleeve 2; the electric actuating cylinder 28 is installed on the lower platform 17 through an outer hexagon bolt, the electric cylinder connecting shaft 27 is installed on an output shaft of the electric actuating cylinder 28 through six inner hexagon bolts, the six-dimensional force sensor 15 is installed on the main shaft 13 through six sensor connecting bolts 14, the six-dimensional force sensor 15 is positioned on the main shaft 13 through a positioning pin 11, and the installation of the lower loading chain is completed; sleeving a parent body 4 of the centering adjusting mechanism on a shaft shoulder of a main shaft 13, installing a clamp connecting shaft 16 on a six-dimensional force sensor 15 through a flange bolt, and installing an upper clamp 20 on the clamp connecting shaft 16 through six upper clamp connecting bolts 19; the test piece 23 is tightly pressed and installed in the upper clamp 20 by a cover plate 21 and a cover plate bolt 22, the lower clamp 24 is installed on a support seat 25 through a flange, the support seat 25 is installed on an electric cylinder connecting shaft 27 through a flange and a lower clamp connecting bolt 26, and the electric cylinder connecting shaft 27 is connected with an electric actuating cylinder 28 through a flange; the main shaft 13 penetrates into the centering fixing sleeve 2 and is fixed on the upper top cover 31 through the locking nut 1, and the assembly of the main shaft loading chain is completed.

The centering adjusting mechanism comprises a matrix 4, an adjusting shaft 8, a tightening pin 7, a middle adjusting block 9, a positioning pin 11, a pin shaft sleeve 12, a coaxiality adjusting sleeve 3, an angle adjusting sleeve 5, a round top 6, a square top 10 and a centering fixing sleeve 2; the eight adjusting shafts 8 are arranged on the parent body 4, the adjusting shafts 8 are arranged in the middle adjusting block 9, and the locking pin 7 is inserted into the middle adjusting block 9 to lock the adjusting shafts 8; the pin shaft sleeve 12 is arranged on the parent body 4, the positioning pin 11 is arranged on the pin shaft sleeve 12, and the middle adjusting block 9 is positioned and arranged on the parent body 4 by the two positioning pins 11; the coaxiality adjusting sleeve 3 is sleeved on the main shaft 13, the angle adjusting sleeve 5 is sleeved on the main shaft 13, the coaxiality adjusting sleeve 3 is installed on the upper end face of the parent body 4, and the angle adjusting sleeve 5 is installed on the lower end face of the parent body 4; circular top 6 is installed on middle adjusting block 9, and square top 10 is installed on middle adjusting block 9, parent 4 is installed on 13 shoulders of main shaft, and fixed cover 2 of centering simultaneously overlaps on 13 main shaft, installs on last top cap 31, accomplishes centering device's equipment.

The detection and feedback mechanism comprises a six-dimensional force sensor 15, a host and a processor; the six-dimensional force sensor 15 is installed on the loading chain, the host and the processor are connected with the six-dimensional force sensor 15 through a USB data line, the host and the processor are installed on the rack to receive and process data, and the grating ruler on the electric actuating cylinder 28 outputs displacement information to be transmitted to the host.

The electric actuating cylinder 28 adopts a folding type electric cylinder CDJ2D16-100Z-M9B-B, and the stroke of the electric cylinder is 100 mm.

The machine frame comprises four guide posts 30, adjusting nuts 29, an upper top cover 31, a lower platform 17 and a vibration isolation table 18; the upper top cover 31 is mounted on four guide posts 30 through adjusting nuts 29, the guide posts 30 are mounted on the lower platform 17, and the lower platform 17 is mounted on the vibration isolation table 18, so that the assembly of the rack is completed.

The six-dimensional force sensor adopts HBM-U10M, and the maximum measuring range of the force sensor is 125 KN.

The grating ruler adopts Heidenhain-Aelb-382c, and the maximum measuring range of the grating ruler is 250 mm.

Referring to fig. 1 to 5, the assembly steps of the centering adjustment device of the present invention are as follows:

1. firstly, a main shaft 13 is installed, a centering fixing sleeve 2 is installed in a groove of an upper top cover 31, the main shaft 13 is installed in a centering fixing ring 2, a coaxiality adjusting sleeve 3, an angle adjusting sleeve 5 and a matrix 4 are installed on the main shaft 13, the main shaft is positioned by using a shaft shoulder of the main shaft, and then the main shaft is fixed in the groove of the upper top cover through an adjusting nut 29 of the upper top cover;

2. the corresponding positioning pin 11 and the pin shaft sleeve 12 (16 pairs in total) are numbered in a matching way, the pin shaft sleeve 12 on the parent body 4 is installed, the positioning pin 11 is inserted into the corresponding pin shaft sleeve 12, and meanwhile, the label positioning is carried out on each adjusting direction on the parent body 4;

3. installing eight adjusting shafts 8 on a parent body 4, installing a round top head 6 on a middle adjusting block 9 on the upper layer of the parent body 4, and installing a square top head 10 on the middle adjusting block 9 to reserve the gap amount;

4. four middle adjusting blocks 9 with round top heads 6 are arranged on the upper layer of the parent body 4 in four directions, eight pin shafts 11 are used for positioning with the bottom surface of the parent body 4 (one surface is provided with two pins), four middle adjusting blocks 9 with square top heads 10 are also arranged on the lower layer of the parent body 4 in four directions, eight pin shafts 11 are used for positioning with the bottom surface of the parent body 4, a centering fixed sleeve 2 is arranged, and a coaxiality adjusting sleeve 3 and an angle adjusting sleeve 5 are adjusted to be in the middle;

5. 32 locking pins 7 on the middle adjusting block 9 are respectively installed, lubricating grease is coated on the matrix 4 and each adjusting shaft 8, the adjusting shafts 8 are installed in the corresponding direction of the matrix 4 according to the sequence of the marks, and the adjusting shafts 8 are pre-tightened;

6. and (3) whether the fine adjustment shaft 8 is unsmooth or jammed and the like are caused, after the detection is correct, the matrix is aligned to be overlapped with the frame in the forward direction, and the adjustment shaft 8 is screwed after the alignment, so that the assembly of all parts of the centering adjustment mechanism is completed.

The utility model discloses a centering adjusting device's concrete working process as follows:

step (1), installing a loading chain: installing guide pillars 30 on a lower platform 17, installing the lower platform 17 on a vibration isolation platform 18, installing an upper top cover 31 on four guide pillars 30, screwing the guide pillars 30 by using lock nuts 1, installing an electric action cylinder 28 on the lower platform 17, connecting a supporting seat 25 through an electric cylinder connecting shaft 28, connecting a lower clamp 24 through a flange, installing a cover plate 21 of the lower clamp (sequentially pre-tightening two opposite bolts to prevent the cover plate 21 from being uneven), pressing a test piece 23, and completing the installation of a lower loading chain;

step (2), assembling all parts of the centering adjustment mechanism;

step (3), after the centering mechanism is installed, inserting a main shaft 13 into a centering fixing sleeve 2, fixedly installing the main shaft 13 on an upper top cover 31 by using a double-locking nut 1, connecting the other end of the main shaft 13 with a six-dimensional force sensor 15 through six hexagon socket head cap bolts, sequentially pre-tightening two opposite bolts (preventing the device from being stuck) when the main shaft is installed on the six-dimensional force sensor 15, connecting the other end of the six-dimensional force sensor 15 with a clamp connecting shaft 16 by using a flange, connecting a clamp 20 to the flange at the lower end of the clamp connecting shaft 16, adjusting the direction of the centering adjusting mechanism to enable the front direction of the upper clamp 20 to be consistent with the adjusting direction of the centering adjusting mechanism, installing a sample 23, and installing a cover plate 21 of the;

step (4), installing and calibrating the coaxiality of the centering adjusting mechanism: adjusting the adjusting shafts 8 in the four directions of the lower layer control coaxiality of the matrix 4, checking whether the axial corresponding force values and torques of the adjusting shafts 8 of the six-dimensional force sensor 15 are changed singly or not, and if not, rotating the direction of the centering adjusting mechanism until the axial values of the six-dimensional force sensor 15 corresponding to the four directions of the adjusting shafts 8 are changed singly, locking the adjusting shafts 8 in the four directions of the upper layer of the matrix 4, and completing the coaxiality installation and calibration of the centering adjusting mechanism;

step (5), angle installation and calibration of the centering adjusting mechanism: adjusting the adjusting shafts 8 in the four directions for controlling angle adjustment at the lower layer of the mother body 4, checking whether the axial corresponding force values and torques of the adjusting shafts 8 of the six-dimensional force sensor 15 are changed singly or not, if not, rotating the direction of the centering adjusting mechanism until the axial values of the six-dimensional force sensor 15 corresponding to the four directions of the adjusting shafts 8 are changed singly, locking the adjusting shafts 8 in the four directions at the lower layer of the mother body 4, and completing the coaxiality installation and calibration of the centering adjusting mechanism;

step (6), tightening cover plates 21 of an upper clamp and a lower clamp, checking whether axial torque of a loading chain of the six-dimensional force sensor 15 changes, if the torque exists, firstly unloading bolts, adjusting the orientation of the upper loading chain and the lower loading chain until no torque exists, then screwing in a small number of bolts, firstly pre-tightening bolts arranged diagonally, finely adjusting the orientation of the clamp until the torque value does not change, then tightening the bolts, checking whether the axial torque of the loading chain of the six-dimensional force sensor 15 changes, if the torque changes, continuing to repeatedly adjust until the torque does not change, and finishing the angular centering of the upper loading chain and the lower loading chain;

step (7), pre-stretching the test piece, loading in elastic deformation, keeping the force at 5% of the yield limit, recording the data of a six-dimensional force sensor (15), checking the force and the torque in two orthogonal directions vertical to the plane of a loading chain, firstly adjusting an angle adjusting knob on a spherical surface to reduce the torque in the directions vertical to the loading chain to a minimum value (or less than 5% of the loading force) and not increase along with the increase of the loading force, then adjusting the coaxiality adjusting direction to ensure that the values in the two orthogonal directions vertical to the plane of the loading chain of the six-dimensional force sensor are minimum values (or less than 5% of the loading force) and not increase along with the increase of the loading force, then keeping the force at 10% and 15% of the yield limit, repeating the steps, loading the force to the elastic limit after the standard is reached, and keeping the biasing force within 5% of the loading force or small variation, or collecting the displacement output by the grating ruler of the electric actuating cylinder 28 to calculate corresponding strain and stress to check whether the bias force is in a qualified range;

and (8) simulating the loading chain, calculating displacement offset and angle offset according to the displacement and the direction force value corresponding to the sensor, then calculating the adjustment amount distributed to each adjusting shaft, adjusting the corresponding adjusting shaft 8, and finally finishing the loading and calibration of the whole centering adjusting device.

And (5) finishing the adjustment of the coaxiality of the whole machine, and performing formal tensile test.

The above description is only a preferred example of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, improvement and the like made to the present invention should be included in the protection scope of the present invention.

Claims (5)

1. A centering adjustment device, characterized in that: the centering adjusting mechanism is arranged on the main shaft loading chain, the main shaft loading chain is arranged on the rack, and the detection and feedback mechanism is arranged on the rack to detect and control the adjustment quantity;

the main shaft loading chain is as follows: the electric actuating cylinder (28) is arranged on the lower platform (17), an electric cylinder connecting shaft (27) is arranged on an output shaft of the electric actuating cylinder (28), the six-dimensional force sensor (15) is arranged on the main shaft (13), the six-dimensional force sensor (15) is positioned on the main shaft (13) through a positioning pin (11), the clamp connecting shaft (16) is arranged on the six-dimensional force sensor (15), and the upper clamp (20) is arranged on the clamp connecting shaft (16); the test piece (23) is tightly pressed and installed in the upper clamp (20) through the cover plate (21), the lower clamp (24) is installed on the supporting seat (25) through a flange, the supporting seat (25) is installed on the electric cylinder connecting shaft (27) through a flange, and the electric cylinder connecting shaft (27) is connected with the electric actuating cylinder (28) through a flange; the main shaft (13) penetrates into the centering fixing sleeve (2) and is fixed on the upper top cover (31) through the locking nut (1).

2. Centering adjustment device according to claim 1, characterized in that: the centering adjusting mechanism is as follows: eight adjusting shafts (8) are arranged on the parent body (4), the adjusting shafts (8) are arranged in a middle adjusting block (9), and a locking pin (7) is inserted into the middle adjusting block (9) to lock the adjusting shafts (8); the pin shaft sleeve (12) is arranged on the parent body (4), the positioning pin (11) is arranged on the pin shaft sleeve (12), and the middle adjusting block (9) is positioned and arranged on the parent body (4) by the two positioning pins (11); the coaxiality adjusting sleeve (3) is sleeved on the main shaft (13), the angle adjusting sleeve (5) is sleeved on the main shaft (13), the coaxiality adjusting sleeve (3) is installed on the end face of the parent body (4), and the angle adjusting sleeve (5) is installed on the lower end face of the parent body (4); the round plug (6) is installed on the middle adjusting block (9), the square plug (10) is installed on the middle adjusting block (9), and the matrix (4) is installed on a shaft shoulder of the main shaft (13).

3. Centering adjustment device according to claim 1, characterized in that: the detection and feedback mechanism is as follows: six-dimensional force transducer (15) are installed on the loading chain, and host computer and treater pass through USB data line connection six-dimensional force transducer (15), and host computer and treater are installed in the frame, and the grating chi output displacement information on electric action cylinder (28) transmits for the host computer.

4. Centering adjustment device according to claim 1 or 3, characterized in that: the electric actuating cylinder (28) adopts a folding type electric cylinder CDJ2D16-100Z-M9B-B, and the stroke of the electric cylinder is 100 mm.

5. Centering adjustment device according to claim 1, characterized in that: the frame is as follows: the upper top cover (31) is arranged on four guide columns (30) through adjusting nuts (29), the guide columns (30) are arranged on the lower platform (17), and the lower platform (17) is arranged on the vibration isolation platform (18).

Images