CN114193399B - Assembling tool and assembling method for coaxial anti-rotation rotator structure assembly - Google Patents
Assembling tool and assembling method for coaxial anti-rotation rotator structure assembly Download PDFInfo
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- CN114193399B CN114193399B CN202111529576.3A CN202111529576A CN114193399B CN 114193399 B CN114193399 B CN 114193399B CN 202111529576 A CN202111529576 A CN 202111529576A CN 114193399 B CN114193399 B CN 114193399B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000000149 penetrating effect Effects 0.000 claims abstract description 4
- 230000008569 process Effects 0.000 abstract description 6
- 230000006835 compression Effects 0.000 description 8
- 238000007906 compression Methods 0.000 description 8
- 239000000306 component Substances 0.000 description 7
- 238000009434 installation Methods 0.000 description 4
- 239000000919 ceramic Substances 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- 230000035945 sensitivity Effects 0.000 description 3
- 230000000712 assembly Effects 0.000 description 2
- 238000000429 assembly Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 230000001133 acceleration Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 239000008358 core component Substances 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 230000036541 health Effects 0.000 description 1
- WABPQHHGFIMREM-UHFFFAOYSA-N lead(0) Chemical compound [Pb] WABPQHHGFIMREM-UHFFFAOYSA-N 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
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- 238000006467 substitution reaction Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B25—HAND TOOLS; PORTABLE POWER-DRIVEN TOOLS; MANIPULATORS
- B25B—TOOLS OR BENCH DEVICES NOT OTHERWISE PROVIDED FOR, FOR FASTENING, CONNECTING, DISENGAGING OR HOLDING
- B25B27/00—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for
- B25B27/14—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for assembling objects other than by press fit or detaching same
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Abstract
The invention provides a coaxial anti-rotation swivel body structure assembly tool and an assembly method, wherein the coaxial anti-rotation swivel body structure assembly tool comprises: the lower bracket is provided with an axial stepped hole, and the base is clamped in the axial stepped hole; one end of the support is clamped with the axial stepped hole, and a base, a piezoelectric stack and a mass block are sequentially arranged on the support in a penetrating manner; the upper bracket is arranged at intervals with the lower bracket, and is provided with an axial threaded hole; the lower end of the threaded jacking pipe is abutted with the upper end of the mass block through a stop piece, and the base, the piezoelectric stack and the mass block can be pressed at the lower bracket; the shaft sleeve is arranged in the threaded jacking pipe, and the other end of the support column is connected with an inner hole of the shaft sleeve in a coaxial matching manner. The whole assembly process of the embodiment of the invention is controlled by the fixture, so that the aim of improving the assembly precision can be fulfilled.
Description
Technical Field
The invention relates to the technical field of press-fitting tools, in particular to a coaxial anti-rotation swivel body structure assembly tool and an assembly method.
Background
Compared with the traditional magneto-electric vibration sensor, the piezoelectric vibration sensor in the prior art has the advantages of wide frequency, high test magnitude, high dynamic range, excellent temperature characteristics and the like, is light in weight and harsh in environmental resistance, is rapidly and widely applied to the novel or newly-developed airborne application field, and also becomes a core component for monitoring the vibration state in the service life of the aeroengine, and is a key basic component for health assessment, fault prediction and diagnosis in the engine operation process. The piezoelectric element assembly structure of the common piezoelectric vibration sensor has a central compression structure, a plane shear type and an annular shear type. The piezoelectric vibration sensor with the compression structure has simple structure and high rigidity, belongs to the structure which is designed at the earliest and has a large number of applications, and is the most common central compression structure. Likewise, the center compression type structure is the earliest applied structure in the field of airborne application. The piezoelectric vibration sensor with the central compression structure is a preferable structure in combination with the requirements of high temperature resistance and high sensitivity. The resonance frequency is generally required to be not less than 15kHz, the charge sensitivity deviation is not more than + -5% in the frequency range of 2.5kHz, and the charge sensitivity deviation is not more than + -10% in the frequency range of 5kHz. Besides reasonable design of sensor structures and parts, improvement of form and position tolerance, proper and consistent pretightening torque and the like of assembly of the piezoelectric element assembly are key points for guaranteeing inherent or dynamic characteristics of sensor resonant frequency, frequency response and the like.
Disadvantages of the prior art: the assembly of the center compression type piezoelectric element assembly in the prior art adopts manual assembly, the assembly precision and the coaxiality of the manual assembly method are low, and the lead wire is easy to touch, so that the center compression type piezoelectric element assembly cannot work normally.
Disclosure of Invention
In view of this, the embodiments of the present disclosure provide a tool and a method for assembling a coaxial anti-rotation rotator structure assembly, so as to achieve the purpose of improving the assembly accuracy.
The embodiment of the specification provides the following technical scheme: a coaxial anti-rotation swivel structure assembly tool comprising: the lower bracket is provided with an axial stepped hole, and the base is clamped in the axial stepped hole; one end of the support is clamped with the axial stepped hole, and a base, a piezoelectric stack and a mass block are sequentially arranged on the support in a penetrating manner; the upper bracket is arranged at intervals with the lower bracket, and is provided with an axial threaded hole; the lower end of the threaded jacking pipe is abutted with the upper end of the mass block through a stop piece, and the base, the piezoelectric stack and the mass block can be pressed at the lower bracket; the shaft sleeve is arranged in the threaded jacking pipe, and the other end of the support column is connected with an inner hole of the shaft sleeve in a coaxial matching manner.
Further, the lower end of the axial stepped hole is an internal threaded hole, the coaxial anti-rotation swivel body structure assembly assembling tool further comprises a jacking column fixedly connected with the internal threaded hole, the jacking column is provided with an axial positioning hole, and one end of the supporting column is coaxially positioned and clamped with the axial positioning hole.
Further, the base, the piezoelectric stack and the mass block are connected through a pre-tightening screw and a pre-tightening nut, wherein the diameter of the axial positioning hole is larger than the maximum diameter of the pre-tightening screw, and the inner diameter of the threaded top tube is larger than the maximum diameter of the pre-tightening nut.
Further, the coaxial anti-rotation swivel body structure assembly assembling tool further comprises a torque nut used for screwing the pre-tightening nut, and the maximum diameter of the torque nut is smaller than the inner diameter of the threaded top pipe.
Further, the both sides of lower carriage are provided with the installation screw hole, are provided with on the upper bracket with installation screw hole complex connection through-hole, and the upper bracket passes through screw connection with the lower carriage.
Further, a screw sleeve is sleeved outside the screw.
The invention also provides an assembly method, which adopts the assembly tool for the coaxial anti-rotation rotator structure assembly to assemble, and comprises the following steps: step 1, detachably arranging a support column in an axial stepped hole of a lower bracket; step 2, enabling the base, the piezoelectric stack and the mass block to sequentially penetrate through the support column and enabling the base to be clamped with the axial stepped hole; step 3, placing the stop piece on the mass block and fixedly connecting the upper bracket with the lower bracket; step 4, connecting the threaded jacking pipe with the axial threaded hole in a matching way, installing the shaft sleeve in the threaded jacking pipe, and enabling the shaft sleeve to be matched with the other end of the supporting column; step 5, pre-tightening the threaded jacking pipe and the mass block through a stop piece, and dismantling the support and the shaft sleeve after the pre-tightening is finished; step 6, connecting the base, the piezoelectric stack and the mass block through a pre-tightening screw and a pre-tightening nut, and screwing the pre-tightening screw to reach a set stress value; and 7, dismantling the lower bracket, the upper bracket and the threaded jacking pipe to finish the assembly operation.
Further, the method comprises the following steps: and a prop is assembled in the axial stepped hole of the lower bracket, and the prop is detachably connected with the axial positioning hole of the prop.
Further, the method comprises the following steps: and (3) dismantling the lower bracket, the upper bracket, the threaded jacking pipe and the jacking column, and then connecting the jacking column with the base to prevent the pre-tightening screw from falling off.
Compared with the prior art, the beneficial effects that above-mentioned at least one technical scheme that this description embodiment adopted can reach include at least: after the base of the piezoelectric assembly is clamped by the lower bracket, the support column penetrates through the base to be connected with the axial stepped hole, the mass block is placed after the piezoelectric stack is stacked and then fixed by the stop piece and the upper bracket, the support column is preloaded through the threaded jacking pipe, finally, the support column is removed, the pre-tightening screw and the pre-tightening nut penetrate through the piezoelectric assembly and then are pre-tightened according to the torque requirement through the torque nut and the torque spanner, and the whole process is controlled by the clamp to carry out assembly shape and position size control, so that the aim of improving the assembly precision can be achieved.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present application, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and that other drawings can be obtained according to these drawings without inventive effort for a person skilled in the art.
FIG. 1 is a schematic diagram of an exploded construction of an embodiment of the present invention;
FIG. 2 is a schematic view of a torque nut in accordance with an embodiment of the present invention;
FIG. 3 is a schematic view of a shaft sleeve according to an embodiment of the present invention;
FIG. 4 is a schematic view of a threaded jacking pipe according to an embodiment of the present invention;
FIG. 5 is a schematic view of the structure of the upper bracket in the embodiment of the present invention;
FIG. 6 is a schematic view of a stop tab according to an embodiment of the present invention;
FIG. 7 is a schematic view of a strut in an embodiment of the present invention;
FIG. 8 is a schematic view of the structure of the lower bracket according to the embodiment of the present invention;
fig. 9 is a schematic structural view of a top pillar according to an embodiment of the present invention.
Reference numerals in the drawings: 1. a torque nut; 2. pre-tightening the nut; 3. a shaft sleeve; 4. a threaded jacking pipe; 5. a screw; 6. an upper bracket; 7. a stop piece; 8. a mass block; 9. a piezoelectric stack; 10. a support post; 11. a screw sleeve; 12. a base; 13. a lower bracket; 14. a top column; 15. and (5) pre-tightening the screw.
Detailed Description
Embodiments of the present application will be described in detail below with reference to the accompanying drawings.
It should be noted that, without conflict, the embodiments of the present application and features of the embodiments may be combined with each other. The application will be described in detail below with reference to the drawings in connection with embodiments.
As shown in fig. 1 to 9, an embodiment of the present invention provides an assembly tool for a coaxial anti-rotation swivel body structure assembly, which comprises a lower bracket 13, a support post 10, an upper bracket 6, a threaded jacking pipe 4 and a shaft sleeve 3. The lower bracket 13 is provided with an axial stepped hole, and the base 12 is clamped in the axial stepped hole; one end of a support column 10 is clamped with the axial stepped hole, and a base 12, a piezoelectric stack 9 and a mass block 8 are sequentially arranged on the support column 10 in a penetrating manner; the upper bracket 6 and the lower bracket 13 are arranged at intervals, and an axial threaded hole is formed in the upper bracket 6; the screw jacking pipe 4 is matched with the axial threaded hole, the lower end of the screw jacking pipe 4 is abutted with the upper end of the mass block 8 through the stop piece 7, and the base 12, the piezoelectric stack 9 and the mass block 8 can be pressed on the lower bracket 13; the shaft sleeve 3 is arranged in the threaded jacking pipe 4, and the other end of the supporting column 10 is coaxially matched and connected with an inner hole of the shaft sleeve 3.
After the base 12 of the piezoelectric assembly is clamped by the lower bracket 13, the support column 10 penetrates through the base 12 to be connected with the axial stepped hole, the mass block 8 is placed after the piezoelectric stack 9 is stacked and then fixed by the stop piece 7 and the upper bracket 6, the support column 10 is finally removed through preloading of the threaded jacking pipe 4, the pre-tightening screw 15 and the pre-tightening nut 2 penetrate through the piezoelectric assembly and then are pre-tightened according to the torque requirement through the torque nut and the torque spanner, and the whole process is controlled by the clamp to carry out assembly shape and position size control, so that the aim of improving assembly precision can be achieved.
The piezoelectric ceramic plates and the wiring lugs of the piezoelectric stack 9 are designed into a plurality of plates according to performance, and the insulating plates are arranged on the upper and lower parts of the piezoelectric stack.
The lower extreme in axial shoulder hole is the internal thread hole, and coaxial anti-rotation swivel body structural component assembly tool still includes spliced pole 14, with internal thread hole fixed connection, spliced pole 14 is provided with the axial locating hole, the coaxial location joint of one end and the axial locating hole of pillar 10.
The base 12, the piezoelectric stack 9 and the mass block 8 are connected by a pre-tightening screw 15 and a pre-tightening nut 2, wherein the diameter of the axial positioning hole is larger than the maximum diameter of the pre-tightening screw 15, and the inner diameter of the threaded jacking pipe 4 is larger than the maximum diameter of the pre-tightening nut 2.
The final assembly component in the embodiment of the invention is the base 12, the piezoelectric stack 9, the mass block 8, the pre-tightening screw 15 and the pre-tightening nut 2, and other components are all components of the coaxial anti-rotation swivel structure assembly tool, so that the components can be removed after the assembly is completed.
Preferably, the coaxial anti-rotation swivel body structure assembly assembling tool further comprises a torque nut 1 for screwing the pre-tightening nut 2, wherein the maximum diameter of the torque nut 1 is smaller than the inner diameter of the threaded jacking pipe 4.
The embodiment of the invention can complete and level the annular piezoelectric ceramic element, the insulating sheet, the wiring sheet and the cylindrical mass block, is based on coaxial and precise assembly of an inner hole, ensures that the piezoelectric element and the wiring sheet are not damaged in the assembly process, simultaneously, the pre-tightening screw and the pre-tightening nut of the piezoelectric element assembly are freely assembled by hands and the pre-tightening torque is required according to the design torque under the preliminary pre-tightening condition of an assembly tool, the assembly precision is ensured by the tool, the consistency is high, the high-stress assembly is realized under the preliminary pre-tightening condition of a wrenchable structure and the condition that the stop sheet is prevented from following rotation, and the high acceleration resistance, the wide flatness frequency characteristic and the high resonance frequency performance of the force-sensitive measurement assembly of the revolving body structure are improved.
The both sides of lower carriage 13 are provided with the installation screw hole, are provided with on the upper bracket 6 with installation screw hole complex connection through-hole, upper bracket 6 passes through screw 5 with lower carriage 13 to be connected. The screw 5 is sleeved with a threaded sleeve 11.
The embodiment of the invention has the following beneficial effects:
The upper bracket 6 and the lower bracket 13 frame the upper and lower assembly lines of the integral piezoelectric assembly, and simultaneously support the support post 10 and the shaft sleeve 3 to coaxially assemble all the revolving body parts by the base holes, so that the coaxiality is ensured.
And a conventional buckle type fixing structure is abandoned, the screw jacking pipe 4 and the upper bracket 6 select screw threads to transmit preloading, and the preloading stability in the assembly process is ensured.
The inverted V-shaped structure and the wrenchable threaded jacking pipe 4 increase the upper limit of the application range of the pre-loading force, and realize high-stress loading.
The structure of the stop piece 7 is matched with the threaded sleeve 11, so that the friction torque transmission of the threaded jacking pipe 4 is prevented, the relative friction sliding among all parts is avoided, the surface quality of the parts is protected, and the uniform loading of the surface force load of the torsion and the further improvement of the loading force are ensured.
The upper bracket 6 and the lower bracket 13 are of semi-surrounding structures, so that the assembly is stable and simple, and the viewing angle is close to the full circumference.
The nested cooperation of axle sleeve 3 and pillar 10 is used, has further guaranteed the axiality of assembly, has avoided the friction damage to each part inner wall when pillar 10 is coaxial to take out after the assembly.
After the upper bracket 6, the lower bracket 13, the stop piece 7 and the threaded jacking pipe 4 are used for pre-pressing the electric component through the screw 5, the lower support post 10 and the shaft sleeve 3 can be removed, the pre-tightening nut 2 and the pre-tightening screw 15 can be assembled in a hands-free mode, meanwhile, the assembly quality and the alignment degree of the inner holes can be observed.
The assembly tool of the semi-surrounding structure of the upper bracket 6 and the lower bracket 13 connected through the screw 5 can assemble the piezoelectric assemblies combined by various piezoelectric ceramic plates, meanwhile, the assembly consistency is ensured, the efficiency is improved, the randomness of manual assembly alignment is avoided, and the assembly quality is high.
The tool is suitable for high-stress coaxial assembly of other assemblies with the appearance of a revolving body.
The embodiment of the invention also provides an assembly method, which adopts the assembly tool for the coaxial anti-rotation rotator structure assembly to assemble, and comprises the following steps:
step 1, detachably arranging a support column 10 in an axial stepped hole of a lower bracket 13;
Step 2, enabling the base 12, the piezoelectric stack 9 and the mass block 8 to sequentially penetrate through the support column 10 and enabling the base 12 to be clamped with the axial stepped hole;
Step3, placing the stop piece 7 on the mass block 8 and fixedly connecting the upper bracket 6 with the lower bracket 13;
Step 4, connecting the threaded jacking pipe 4 with the axial threaded hole in a matching way, installing the shaft sleeve 3 in the threaded jacking pipe 4, and enabling the shaft sleeve 3 to be matched with the other end of the supporting column 10;
Step 5, pre-tightening the threaded jacking pipe 4 and the mass block 8 through the stop piece 7, and dismantling the support column 10 and the shaft sleeve 3 after the pre-tightening is finished;
step 6, connecting the base 12, the piezoelectric stack 9 and the mass block 8 through the pre-tightening screw 15 and the pre-tightening nut 2, and screwing the pre-tightening screw 15 to reach a set stress value;
and 7, dismantling the lower bracket 13, the upper bracket 6 and the threaded jacking pipe 4 to finish the assembly operation.
The specific assembly method of the embodiment of the invention is described in detail as follows:
The lower bracket 13 of the assembly tool is horizontally placed on an assembly working table, the base 12 of the piezoelectric assembly is embedded into the circular groove of the lower bracket 13, and the support column 10 is screwed with the top column 14 after passing through the base 12 of the piezoelectric assembly, so that the subsequent stable assembly of the piezoelectric assembly is facilitated. The piezoelectric stack 9 and the mass 8 are sequentially sleeved on the support post 10, and the stop piece 7 is placed. The screw 5 passes through a screw hole of the upper bracket 6 and is sleeved on the upper screw sleeve 11 to be screwed on the lower bracket 13, then the threaded top pipe 4 is screwed into the upper bracket 6, the screw 5 is adjusted to enable the upper bracket 6 to hang on the threaded top pipe 4 at a proper height, the shaft sleeve 3 is sleeved on the support post 10, the stop piece 7 is screwed and toggled according to the pretightening torque and stops on the screw sleeve 11, and then the screw 5 is screwed. The screw jacking pipe 4 can be screwed down by using a spanner as required so that the pre-loading force of the piezoelectric assembly is fixed, and the assembly state of each part of the piezoelectric assembly is kept and stabilized. After the state is determined, the support column 10 is unscrewed, the support column 10, the support column 14 and the shaft sleeve 3 are removed, the assembly quality can be observed in all directions and at all angles, and finally the pre-tightening nut 2 and the pre-tightening screw 15 are assembled according to the positions and fastened according to the design torque by using a torque wrench. Finally, the screw 5 is unscrewed to remove all the assembly tool parts, and the completely assembled central compression piezoelectric assembly can be detached.
The foregoing description of the embodiments of the invention is not intended to limit the scope of the invention, so that the substitution of equivalent elements or equivalent variations and modifications within the scope of the invention shall fall within the scope of the patent. In addition, the technical characteristics and technical scheme, technical characteristics and technical scheme can be freely combined for use.
Claims (3)
1. An assembly method, which adopts a coaxial anti-rotation rotator structure assembly tool for assembly, wherein the coaxial anti-rotation rotator structure assembly tool comprises:
the lower bracket (13) is provided with an axial stepped hole, and the base (12) is clamped in the axial stepped hole;
one end of the support column (10) is clamped with the axial stepped hole, and a base (12), a piezoelectric stack (9) and a mass block (8) are sequentially arranged on the support column (10) in a penetrating manner;
the upper bracket (6) is arranged at intervals with the lower bracket (13), and an axial threaded hole is formed in the upper bracket (6);
The threaded jacking pipe (4) is matched with the axial threaded hole, the lower end of the threaded jacking pipe (4) is abutted with the upper end of the mass block (8) through the stop piece (7), and the base (12), the piezoelectric stack (9) and the mass block (8) can be pressed on the lower bracket (13);
the shaft sleeve (3) is arranged in the threaded jacking pipe (4), and the other end of the supporting column (10) is coaxially matched and connected with an inner hole of the shaft sleeve (3);
The lower end of the axial stepped hole is an internal threaded hole, the coaxial anti-rotation swivel body structure assembly assembling tool further comprises a jacking column (14) fixedly connected with the internal threaded hole, the jacking column (14) is provided with an axial positioning hole, and one end of the supporting column (10) is coaxially positioned and clamped with the axial positioning hole;
The base (12), the piezoelectric stack (9) and the mass block (8) are connected through a pre-tightening screw (15) and a pre-tightening nut (2), wherein the diameter of the axial positioning hole is larger than the maximum diameter of the pre-tightening screw (15), and the inner diameter of the threaded jacking pipe (4) is larger than the maximum diameter of the pre-tightening nut (2);
The coaxial anti-rotation swivel body structure assembly tool also comprises a torque nut (1) used for screwing the pre-tightening nut (2), and the maximum diameter of the torque nut (1) is smaller than the inner diameter of the threaded jacking pipe (4);
Mounting threaded holes are formed in two sides of the lower support (13), a connecting through hole matched with the mounting threaded holes is formed in the upper support (6), and the upper support (6) is connected with the lower support (13) through a screw (5);
the screw (5) is sleeved with a screw sleeve (11);
The assembly method is characterized by comprising the following steps of:
Step 1, detachably arranging a support column (10) in an axial stepped hole of a lower bracket (13);
step 2, enabling the base (12), the piezoelectric stack (9) and the mass block (8) to sequentially penetrate through the support column (10) and enabling the base (12) to be clamped with the axial stepped hole;
Step 3, placing the stop piece (7) on the mass block (8) and fixedly connecting the upper bracket (6) with the lower bracket (13);
Step 4, connecting the threaded jacking pipe (4) with the axial threaded hole in a matching way, installing the shaft sleeve (3) in the threaded jacking pipe (4) and enabling the shaft sleeve (3) to be matched with the other end of the supporting column (10);
step 5, pre-tightening the threaded jacking pipe (4) and the mass block (8) through a stop piece (7), and dismantling the support column (10) and the shaft sleeve (3) after the pre-tightening is finished;
Step 6, connecting the base (12), the piezoelectric stack (9) and the mass block (8) through a pre-tightening screw (15) and a pre-tightening nut (2), and screwing the pre-tightening screw (15) to reach a set stress value;
and 7, dismantling the lower bracket (13), the upper bracket (6) and the threaded jacking pipe (4) to finish the assembly operation.
2. The method of assembling according to claim 1, wherein said step 1 is specifically: a top column (14) is assembled in an axial stepped hole of the lower bracket (13), and the support column (10) is detachably connected with an axial positioning hole of the top column (14).
3. The method of assembling according to claim 2, wherein said step 7 is specifically: the lower bracket (13), the upper bracket (6), the threaded jacking pipe (4) and the jacking column (14) are disassembled, and then the jacking column (14) is connected with the base (12) to prevent the pre-tightening screw (15) from falling off.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111529576.3A CN114193399B (en) | 2021-12-14 | 2021-12-14 | Assembling tool and assembling method for coaxial anti-rotation rotator structure assembly |
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| CN202111529576.3A CN114193399B (en) | 2021-12-14 | 2021-12-14 | Assembling tool and assembling method for coaxial anti-rotation rotator structure assembly |
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| CN114193399B true CN114193399B (en) | 2024-07-12 |
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| CN214025421U (en) * | 2020-10-25 | 2021-08-24 | 成都大学 | Piezoelectric sensor laboratory assembly jig |
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| FR2665660A1 (en) * | 1990-08-07 | 1992-02-14 | Quinton Hazell Sarl | Universal centring tool for automobile clutch |
| DE202006006352U1 (en) * | 2006-04-19 | 2006-09-07 | Müller, Michael | Bearing assembling and disassembling device for use during car repair, has three clamping jaws and ring surrounding clamping jaws, where ring is made of flexible body and is connected with adjuster to adjust inner diameter of ring |
| DE102012211889A1 (en) * | 2012-07-09 | 2014-01-09 | Mahle International Gmbh | Assembly method and assembly device |
| JP3183510U (en) * | 2013-03-04 | 2013-05-23 | 南宜國際材料有限公司 | Hub bearing installation tool |
| CN104476487B (en) * | 2014-11-17 | 2019-05-10 | 北京京航公司 | Piezoelectric acceleration sensor pre-tightening apparatus |
| CN106734831B (en) * | 2017-03-02 | 2018-06-19 | 杭州联团科技有限公司 | Clincher tool collet and clincher tool |
| CN110253482B (en) * | 2019-07-03 | 2021-02-19 | 上海归朴机电设备有限公司 | Transmission shaft dismounting device |
| CN110370201B (en) * | 2019-07-19 | 2021-11-05 | 中国航发成都发动机有限公司 | Method for assembling micro-gap of low-pressure turbine blade of aircraft engine |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN212526748U (en) * | 2020-05-29 | 2021-02-12 | 成都华川电装有限责任公司 | Planetary wheel bearing press-fitting structure of starting motor |
| CN214025421U (en) * | 2020-10-25 | 2021-08-24 | 成都大学 | Piezoelectric sensor laboratory assembly jig |
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