CN110936325A - Processing method for assembling interference bush on thin-wall part from middle narrow groove to two side holes - Google Patents
Processing method for assembling interference bush on thin-wall part from middle narrow groove to two side holes Download PDFInfo
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- CN110936325A CN110936325A CN201911197041.3A CN201911197041A CN110936325A CN 110936325 A CN110936325 A CN 110936325A CN 201911197041 A CN201911197041 A CN 201911197041A CN 110936325 A CN110936325 A CN 110936325A
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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
- B25B27/02—Hand tools, specially adapted for fitting together or separating parts or objects whether or not involving some deformation, not otherwise provided for for connecting objects by press fit or detaching same
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Abstract
A thin-wall part is from the narrow groove of middle to the processing method of the hole assembly interference bush of both sides, because the narrow ordinary tool of two-layer interval of thin-wall part can't enter, the man-made assembly process wastes time and energy and the processing time is long, put the small-size part into narrow interval with tweezers at first, and pass another side hole of part and withstand the back of the small-size part with the homemade long pin, no matter the size of the assembly part is in order to guarantee the vertical state of the part, need another person to right, but the process of holding up by the person must not guarantee the part is perpendicular to 100% of contact surface, withstand the back of the small-size part and can't be perpendicular to 100% of assembly hole too, easy dress is oblique to produce the surplus thing such as filings, easy to beat when beating, cause the. The invention has the advantages that: the productivity is improved, the processing quality of the parts is improved, the situation of excess of the cutting filament is avoided, and the surface integrity of the parts is consistent. The labor intensity of workers is reduced, and the labor force of another operator is released.
Description
Technical Field
The invention relates to the field of machining, in particular to a machining method for assembling interference bushings on thin-wall parts from a middle narrow groove to two side holes.
Background
In the aviation manufacturing industry, the assembly technology is a method for researching connection implementation of various parts, a method and a process for forming the parts into assembly units, and a process flow; the assembly method and process ensure that the parts are correctly matched and have correct relative positions, so that the parts have specified matching precision and reliable connection, and finally meet the use function specified by design. The fitter assembly procedure is an essential link for component assembly, component unit bodies and finished components; the efficiency of assembly work is improved, and convenient production is the requirement that enterprise adaptation market development is always inconvenient. The assembly is carried out at special positions of parts with complex structures, narrow gaps, complex shapes and the like by manual assembly, so that the length of the assembly process is unstable, the force used by personnel is not controllable, the assembly methods of different personnel are inconsistent, meanwhile, parts can be completely assembled by an automatic or automated assembly method, the force uniformity of the assembly process can be ensured, the three assembly processes are consistent, and the machining process is stable. However, the conventional wood hammer beating method, the conventional thermal expansion assembly method and the conventional cooling assembly method are not suitable for assembling smaller parts, the precision of the parts is easy to change to a certain extent, meanwhile, the unreasonable cooling and heating time setting of the parts has certain influence on the size change of different materials of the parts, the beating force of the wood hammer, the copper hammer or the rubber hammer is inconsistent, the deformation of the thin-wall parts is influenced to a certain extent, and the paper size and the part quality requirements cannot be well controlled. Under similar this condition, for solving this problem, improve machining efficiency, improve part surface quality, guarantee that part surface integrality is good, this instrument is indispensable.
The existing processing method for assembling the interference bush to the holes on the two sides by the middle narrow groove adopts a more traditional wooden hammer knocking method. The matching required on the drawing is interference fit, the small shaft is made of soft material and the assembled large hole is made of hard material, so that extruded copper wires are easily generated due to poor concentricity and perpendicularity of the shaft and the hole when the wooden hammer is used for beating, the matching size required by the drawing is reduced, and the processing cannot be completed by one person; also adopt liquid nitrogen cooling smallclothes to assemble and solve this problem, the cooling time is long, and the assembly process causes the injury to the staff easily, must adopt gloves safeguard measure man-hour, and it is very inconvenient when putting into the middle narrow groove of major possession again to take out the smallclothes, whether the smallclothes drops or surpasss the cooling time, still can't accomplish this processing alone simultaneously, has seriously restricted the time of parts machining and personnel's occupation.
Disclosure of Invention
The invention aims to provide a part assembling method which is simple and convenient to operate and reduces the labor intensity of workers; the quality of the part is improved, the phenomenon of shearing copper wires in the assembling process is avoided, and the interference requirement and the surface integrity of the part are consistent; the working efficiency is improved, and the production preparation and processing period is shortened; the method reduces the participation of personnel and releases unnecessary labor force of the personnel, and particularly provides a processing method for assembling interference bushings on the thin-wall part from a middle narrow groove to two side holes.
The invention provides a processing method for assembling interference bushings on thin-wall parts from a middle narrow groove to two side holes, which is characterized by comprising the following steps of: according to the processing method for assembling the interference bush on the thin-wall part from the middle narrow groove to the two side holes, as a common tool with a narrow gap between two layers of the thin-wall part cannot enter, the time and labor are wasted in the artificial assembly process, the processing time is long, firstly, the small part is placed into the narrow gap by using a pair of tweezers, a self-made long pin penetrates through the other side hole of the part to prop against the back of the small part, no matter the size of the assembly part is in order to ensure the vertical state of the part, another person is required to righting the assembly part, but the person does not necessarily ensure that the part is 100% vertical to the contact surface, the axis of the small part is not 100% vertical to the hole of the assembly part when propping against the back of the small part, the assembly part is easy to be obliquely loaded.
The automatic tool for assembling the parts changes the traditional manual method, and has the advantages of simple structure and convenient manufacture;
the working principle is that a sliding shaft on a tool is guided to connect a bush and a hole in series by taking a hole on a part to be assembled as a reference, and the bush and the part are assembled together by adjusting the pressure of a manual valve matched with a bolt to rebound the sliding shaft; the working process is divided into a connecting cylinder device, the bushing is placed in the position of the narrow slot in the middle of the part, which is aligned with the hole, the bushing and the hole are connected in series by adjusting the manual valve and guiding the sliding shaft on the tool, and then the bushing and the part are assembled together in four steps by adjusting the pressure of the manual valve and matching the bolt rebounding sliding shaft, so that the clamping is stable and the operation is convenient. The novel part machining device is suitable for new part development and production of parts in any batch, is simple to manufacture and convenient to maintain, and not only improves the quality of the parts, but also saves the machining efficiency of the parts.
The tool for replacing the wood hammer to perform the working of knocking, cold packing and hot packing has the advantages of stability and irreversibility in the processing process, no manual operation, and customized assembly positions according to the structure of parts.
1) Designing the position of the size K5.5 on the tooling drawing according to the size of a guide hole of a part lining drawing to be processed, and ensuring that the size of a part hole is the guide hole of the shaft size K5.5;
2) designing the position of the dimension H8 on the tooling drawing according to the dimension of a guide hole of a position drawing of a part hole to be assembled, and ensuring that the dimension of the part hole is the dimension of the guide of the shaft center positioned by the dimension H8 of the excircle of the upper bushing of the tooling matched with the shaft;
3) the position of the dimension P9 on the tooling drawing is designed according to the dimension of the hole center line of the hole position drawing of the part to be assembled, so that the control of the height of the center line of the shaft and the base surface of the part after the part of the assembly bushing is placed is ensured;
4) the assembling interference magnitude of the bushing and the assembling thin-wall part determines the types of the selected cylinder, the regulating valve and the manual valve.
Assembling according to the assembling pattern of the following parts assembling and processing processes:
step 1: and (4) fixing. Fixing the part on a workbench, aligning the assembly position to the hole position of the part requiring assembly of the bush, and aligning the shaft of the bush on the tool shaft with the hole of the part;
step 2: the manual valve is connected with the field compressed air;
and 3, step 3: and (6) withdrawing. Pushing the handle with the three types of the part assembly partial patterns upwards by using a manual regulating valve to retract an orange shaft in the part assembly partial pattern II;
and 4, step 4: and (6) assembling. And (3) using a small forceps to install the bushing into the position of the shaft with the part assembling local pattern of two yellow and no orange, and aligning the outer diameter of the bushing to the position of the hole of the part to be assembled.
And 5, step 5: and (4) pushing. Pushing the manual regulating valve back to the middle position according to the step 3, and extending the orange shaft out to ensure that the shaft passes through the hole of the lining and the part hole and ensure that the parts are concentric.
And 6, step 6: and (6) assembling. The positioning bolt is inserted into the back of the bushing to align to the position of the narrow handle of the orange shaft, the manual regulating valve is used for pushing the handles of the three types of local patterns of the part assembly downwards to drive the positioning bolt to press the bushing, and the bushing assembly is guaranteed to be completed.
And 7, step 7: and (6) recovering. The positioning bolt is taken back, the manual regulating valve is pushed back to the middle position according to the step 3, and the orange shaft in the part assembly partial pattern II is retracted; the above 7 steps are repeated with one bush thereafter.
The invention has the advantages that:
according to 100 pieces processed on site, the time is 4200 minutes according to the traditional manual processing, 1950 minutes after a new assembly tool is used, 2250 minutes can be saved, the productivity is improved by 53.5%, the processing quality of parts is improved, the situation of excessive shearing filament scraps is avoided, and the surface integrity of the parts is consistent. 2 operators are needed to perform the on-site processing according to the calculation of 1 workpiece on site and the cold charging processing time of 55 minutes; the time after the assembly tool is used is 19.5 minutes, only 1 operator needs to use the assembly tool, the time can be saved by 35.5 minutes, and the productivity is improved by 64.5 percent. But also reduces the labor intensity of workers and releases the labor of another operator.
Drawings
The invention is described in further detail below with reference to the following figures and embodiments:
FIG. 1 is an assembly view of a pneumatic assembly tool in use;
FIG. 2 is an assembly view for sectioning use of a pneumatic assembly fixture;
FIG. 3 is a diagram of part mounting hole location;
FIG. 4 is a part bushing diagram;
FIG. 5 is a bushing assembly view;
FIG. 6 is an assembly view for sectioning use of the pneumatic assembly fixture;
FIG. 7 shows a first part assembly process drawing;
FIG. 8 is a detail part assembly detail drawing II;
fig. 9 is a part assembly partial drawing three;
| in the figure 1 | |
| 2 | Chassis |
| 3 | Thin-walled part with narrow groove in |
| 4 | JI thin cylinder |
| 5 | Regulating valve |
| 6 | Pin |
| 7 | Shaft |
| 8 | Positioning support |
| 9 | Positioning bolt |
Detailed Description
Example 1
The invention provides a processing method for assembling interference bushings on thin-wall parts from a middle narrow groove to two side holes, which is characterized by comprising the following steps of: according to the processing method for assembling the interference bush on the thin-wall part from the middle narrow groove to the two side holes, as a common tool with a narrow gap between two layers of the thin-wall part cannot enter, the time and labor are wasted in the artificial assembly process, the processing time is long, firstly, the small part is placed into the narrow gap by using a pair of tweezers, a self-made long pin penetrates through the other side hole of the part to prop against the back of the small part, no matter the size of the assembly part is in order to ensure the vertical state of the part, another person is required to righting the assembly part, but the person does not necessarily ensure that the part is 100% vertical to the contact surface, the axis of the small part is not 100% vertical to the hole of the assembly part when propping against the back of the small part, the assembly part is easy to be obliquely loaded.
The automatic tool for assembling the parts changes the traditional manual method, and has the advantages of simple structure and convenient manufacture;
the working principle is that a sliding shaft on a tool is guided to connect a bush and a hole in series by taking a hole on a part to be assembled as a reference, and the bush and the part are assembled together by adjusting the pressure of a manual valve matched with a bolt to rebound the sliding shaft; the working process is divided into a connecting cylinder device, the bushing is placed in the position of the narrow slot in the middle of the part, which is aligned with the hole, the bushing and the hole are connected in series by adjusting the manual valve and guiding the sliding shaft on the tool, and then the bushing and the part are assembled together in four steps by adjusting the pressure of the manual valve and matching the bolt rebounding sliding shaft, so that the clamping is stable and the operation is convenient. The novel part machining device is suitable for new part development and production of parts in any batch, is simple to manufacture and convenient to maintain, and not only improves the quality of the parts, but also saves the machining efficiency of the parts.
The tool for replacing the wood hammer to perform the working of knocking, cold packing and hot packing has the advantages of stability and irreversibility in the processing process, no manual operation, and customized assembly positions according to the structure of parts.
1) Designing the position of the size K5.5 on the tooling drawing according to the size of a guide hole of a part lining drawing to be processed, and ensuring that the size of a part hole is the guide hole of the shaft size K5.5;
2) designing the position of the dimension H8 on the tooling drawing according to the dimension of a guide hole of a position drawing of a part hole to be assembled, and ensuring that the dimension of the part hole is the dimension of the guide of the shaft center positioned by the dimension H8 of the excircle of the upper bushing of the tooling matched with the shaft;
3) the position of the dimension P9 on the tooling drawing is designed according to the dimension of the hole center line of the hole position drawing of the part to be assembled, so that the control of the height of the center line of the shaft and the base surface of the part after the part of the assembly bushing is placed is ensured;
4) the assembling interference magnitude of the bushing and the assembling thin-wall part determines the types of the selected cylinder, the regulating valve and the manual valve.
Assembling according to the assembling pattern of the following parts assembling and processing processes:
step 1: and (4) fixing. Fixing the part on a workbench, aligning the assembly position to the hole position of the part requiring assembly of the bush, and aligning the shaft of the bush on the tool shaft with the hole of the part;
step 2: the manual valve is connected with the field compressed air;
and 3, step 3: and (6) withdrawing. Pushing the handle with the three types of the part assembly partial patterns upwards by using a manual regulating valve to retract an orange shaft in the part assembly partial pattern II;
and 4, step 4: and (6) assembling. And (3) using a small forceps to install the bushing into the position of the shaft with the part assembling local pattern of two yellow and no orange, and aligning the outer diameter of the bushing to the position of the hole of the part to be assembled.
And 5, step 5: and (4) pushing. Pushing the manual regulating valve back to the middle position according to the step 3, and extending the orange shaft out to ensure that the shaft passes through the hole of the lining and the part hole and ensure that the parts are concentric.
And 6, step 6: and (6) assembling. The positioning bolt is inserted into the back of the bushing to align to the position of the narrow handle of the orange shaft, the manual regulating valve is used for pushing the handles of the three types of local patterns of the part assembly downwards to drive the positioning bolt to press the bushing, and the bushing assembly is guaranteed to be completed.
And 7, step 7: and (6) recovering. The positioning bolt is taken back, the manual regulating valve is pushed back to the middle position according to the step 3, and the orange shaft in the part assembly partial pattern II is retracted; the above 7 steps are repeated with one bush thereafter.
Example 2
The invention provides a processing method for assembling interference bushings on thin-wall parts from a middle narrow groove to two side holes, which is characterized by comprising the following steps of: according to the processing method for assembling the interference bush on the thin-wall part from the middle narrow groove to the two side holes, as a common tool with a narrow gap between two layers of the thin-wall part cannot enter, the time and labor are wasted in the artificial assembly process, the processing time is long, firstly, the small part is placed into the narrow gap by using a pair of tweezers, a self-made long pin penetrates through the other side hole of the part to prop against the back of the small part, no matter the size of the assembly part is in order to ensure the vertical state of the part, another person is required to righting the assembly part, but the person does not necessarily ensure that the part is 100% vertical to the contact surface, the axis of the small part is not 100% vertical to the hole of the assembly part when propping against the back of the small part, the assembly part is easy to be obliquely loaded.
The automatic tool for assembling the parts changes the traditional manual method, and has the advantages of simple structure and convenient manufacture;
the working principle is that a sliding shaft on a tool is guided to connect a bush and a hole in series by taking a hole on a part to be assembled as a reference, and the bush and the part are assembled together by adjusting the pressure of a manual valve matched with a bolt to rebound the sliding shaft; the working process is divided into a connecting cylinder device, the bushing is placed in the position of the narrow slot in the middle of the part, which is aligned with the hole, the bushing and the hole are connected in series by adjusting the manual valve and guiding the sliding shaft on the tool, and then the bushing and the part are assembled together in four steps by adjusting the pressure of the manual valve and matching the bolt rebounding sliding shaft, so that the clamping is stable and the operation is convenient. The novel part machining device is suitable for new part development and production of parts in any batch, is simple to manufacture and convenient to maintain, and not only improves the quality of the parts, but also saves the machining efficiency of the parts.
The tool for replacing the wood hammer to perform the working of knocking, cold packing and hot packing has the advantages of stability and irreversibility in the processing process, no manual operation, and customized assembly positions according to the structure of parts.
Assembling according to the assembling pattern of the following parts assembling and processing processes:
step 1: and (4) fixing. Fixing the part on a workbench, aligning the assembly position to the hole position of the part requiring assembly of the bush, and aligning the shaft of the bush on the tool shaft with the hole of the part;
step 2: the manual valve is connected with the field compressed air;
and 3, step 3: and (6) withdrawing. Pushing the handle with the three types of the part assembly partial patterns upwards by using a manual regulating valve to retract an orange shaft in the part assembly partial pattern II;
and 4, step 4: and (6) assembling. And (3) using a small forceps to install the bushing into the position of the shaft with the part assembling local pattern of two yellow and no orange, and aligning the outer diameter of the bushing to the position of the hole of the part to be assembled.
And 5, step 5: and (4) pushing. Pushing the manual regulating valve back to the middle position according to the step 3, and extending the orange shaft out to ensure that the shaft passes through the hole of the lining and the part hole and ensure that the parts are concentric.
And 6, step 6: and (6) assembling. The positioning bolt is inserted into the back of the bushing to align to the position of the narrow handle of the orange shaft, the manual regulating valve is used for pushing the handles of the three types of local patterns of the part assembly downwards to drive the positioning bolt to press the bushing, and the bushing assembly is guaranteed to be completed.
And 7, step 7: and (6) recovering. The positioning bolt is taken back, the manual regulating valve is pushed back to the middle position according to the step 3, and the orange shaft in the part assembly partial pattern II is retracted; the above 7 steps are repeated with one bush thereafter.
Claims (5)
1. A processing method for assembling interference bushings on thin-wall parts from a middle narrow groove to holes on two sides is characterized in that: according to the processing method for assembling the interference bush on the thin-wall part from the middle narrow groove to the two side holes, as a common tool with a narrow gap between two layers of the thin-wall part cannot enter, the time and labor are wasted in the artificial assembly process, the processing time is long, firstly, the small part is placed into the narrow gap by using a pair of tweezers, a self-made long pin penetrates through the other side hole of the part to prop against the back of the small part, no matter the size of the assembly part is in order to ensure the vertical state of the part, another person is required to righting the assembly part, but the person does not necessarily ensure that the part is 100% vertical to the contact surface, the axis of the small part is not 100% vertical to the hole of the assembly part when propping against the back of the small part, the assembly part is easy to be obliquely loaded.
2. A thin-walled workpiece processing method for assembling interference bushings from a narrow middle slot to holes on two sides according to claim 1, characterized in that: the automatic tool for assembling the parts changes the traditional manual method, and has the advantages of simple structure and convenient manufacture;
the working principle is that a sliding shaft on a tool is guided to connect a bush and a hole in series by taking a hole on a part to be assembled as a reference, and the bush and the part are assembled together by adjusting the pressure of a manual valve matched with a bolt to rebound the sliding shaft; the working process is divided into a connecting cylinder device, the bushing is placed in the position of the narrow slot in the middle of the part, which is aligned with the hole, the bushing and the hole are connected in series by adjusting the manual valve and guiding the sliding shaft on the tool, and then the bushing and the part are assembled together in four steps by adjusting the pressure of the manual valve and matching the bolt rebounding sliding shaft, so that the clamping is stable and the operation is convenient.
3. A thin-walled workpiece processing method for assembling interference bushings from a narrow middle slot to holes on two sides according to claim 1, characterized in that: the tool for replacing the wood hammer to perform the working of knocking, cold packing and hot packing has the advantages of stability and irreversibility in the processing process, no manual operation, and customized assembly positions according to the structure of parts.
4. A thin-walled workpiece processing method for assembling interference bushings from a narrow middle slot to holes on two sides according to claim 1, characterized in that: 1) designing the position of the size K5.5 on the tooling drawing according to the size of a guide hole of a part lining drawing to be processed, and ensuring that the size of a part hole is the guide hole of the shaft size K5.5;
2) designing the position of the dimension H8 on the tooling drawing according to the dimension of a guide hole of a position drawing of a part hole to be assembled, and ensuring that the dimension of the part hole is the dimension of the guide of the shaft center positioned by the dimension H8 of the excircle of the upper bushing of the tooling matched with the shaft;
3) the position of the dimension P9 on the tooling drawing is designed according to the dimension of the hole center line of the hole position drawing of the part to be assembled, so that the control of the height of the center line of the shaft and the base surface of the part after the part of the assembly bushing is placed is ensured;
4) the assembling interference magnitude of the bushing and the assembling thin-wall part determines the types of the selected cylinder, the regulating valve and the manual valve;
5. a thin-walled workpiece processing method for assembling interference bushings from a narrow middle slot to holes on two sides according to claim 1, characterized in that: assembling according to the assembling pattern of the following parts assembling and processing processes:
step 1: fixing; fixing the part on a workbench, aligning the assembly position to the hole position of the part requiring assembly of the bush, and aligning the shaft of the bush on the tool shaft with the hole of the part;
step 2: the manual valve is connected with the field compressed air;
and 3, step 3: withdrawing; pushing the handle with the three types of the part assembly partial patterns upwards by using a manual regulating valve to retract an orange shaft in the part assembly partial pattern II;
and 4, step 4: assembling; a small forceps is used for installing the bushing at the position of a shaft with part assembling local pattern of two yellow and no orange, and the outer diameter of the bushing is aligned to the position of a hole of the part to be assembled;
and 5, step 5: pushing; pushing the manual regulating valve back to the middle position according to the step 3, and extending the orange shaft out to ensure that the shaft passes through the hole of the lining and the hole of the part and ensure that the parts are concentric;
and 6, step 6: assembling; the positioning bolt is inserted into the back of the bushing to align to the position of the narrow handle of the orange shaft, and the manual regulating valve is used for pushing the handles of the three local patterns of the part assembly downwards to drive the positioning bolt to press the bushing, so that the bushing assembly is completed;
and 7, step 7: returning to the original place; the positioning bolt is taken back, the manual regulating valve is pushed back to the middle position according to the step 3, and the orange shaft in the part assembly partial pattern II is retracted; the above 7 steps are repeated with one bush thereafter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197041.3A CN110936325A (en) | 2019-11-29 | 2019-11-29 | Processing method for assembling interference bush on thin-wall part from middle narrow groove to two side holes |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911197041.3A CN110936325A (en) | 2019-11-29 | 2019-11-29 | Processing method for assembling interference bush on thin-wall part from middle narrow groove to two side holes |
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| CN110936325A true CN110936325A (en) | 2020-03-31 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117840731A (en) * | 2024-03-07 | 2024-04-09 | 四川通安航天科技有限公司 | Efficient high-precision bushing assembly device and assembly process |
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| CN109877763A (en) * | 2017-12-06 | 2019-06-14 | 徐晓静 | Novel lining press-loading process |
| CN109895023A (en) * | 2019-01-21 | 2019-06-18 | 博众精工科技股份有限公司 | The two-way press-loading device of rubber bushing and the two-way pressing method of rubber bushing |
| CN209599109U (en) * | 2018-12-25 | 2019-11-08 | 株洲九方装备股份有限公司 | A kind of thin-wall bush assembly tool |
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- 2019-11-29 CN CN201911197041.3A patent/CN110936325A/en active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US8490263B2 (en) * | 2008-08-28 | 2013-07-23 | Whitaker Tools, Inc. | Injector sleeve removal tool |
| CN107097170A (en) * | 2017-04-13 | 2017-08-29 | 天津市汇晶丰精密机械有限公司 | One kind pressure bushing device |
| CN107900973A (en) * | 2017-11-30 | 2018-04-13 | 江西洪都航空工业集团有限责任公司 | A kind of press-loading apparatus for being used to install bushing manually |
| CN109877763A (en) * | 2017-12-06 | 2019-06-14 | 徐晓静 | Novel lining press-loading process |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117840731A (en) * | 2024-03-07 | 2024-04-09 | 四川通安航天科技有限公司 | Efficient high-precision bushing assembly device and assembly process |
| CN117840731B (en) * | 2024-03-07 | 2024-04-30 | 四川通安航天科技有限公司 | Efficient high-precision bushing assembly device and assembly process |
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Application publication date: 20200331 |
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