CN107570970B - A kind of large size bay section shell docking pin hole processing method - Google Patents
A kind of large size bay section shell docking pin hole processing method Download PDFInfo
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- CN107570970B CN107570970B CN201710849851.7A CN201710849851A CN107570970B CN 107570970 B CN107570970 B CN 107570970B CN 201710849851 A CN201710849851 A CN 201710849851A CN 107570970 B CN107570970 B CN 107570970B
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Abstract
The invention belongs to large-scale bay section shell processing technique fields, disclose a kind of large-scale bay section shell docking pin hole processing method, comprising: machining benchmark centering step；Rear end face pin hole procedure of processing；Size detection step；Technique backing plate procedure of processing；Limited block installation steps；Front end face pin hole procedure of processing；Disassembly and cleanup step；Detecting step.The present invention can quick and precisely determine machining benchmark, guarantee both ends docking pin hole position, improve product processing efficiency, while error-preventive design avoids processing mistake.
Description
Technical field
The present invention relates to large-scale bay section shell processing technique field, in particular to a kind of large-scale bay section shell docking pin hole adds
Work method.
Background technique
Large-scale bay section shells are at present mainly using skills such as skeleton covering riveting, casting, forging processing or agitating friction welderings
Art molding manufacture.Large-scale bay section shell, especially rotary structure part cabin are extensive in weapon system field in aerospace manufacturing industry
With.Manufactured currently, generalling use rough forging+machining mode, due between cabin dock after to total bodily form
The requirement of shape position precision requires position precision very high each cabin butt junction location pin hole, typically in cabin institute
The finishing of last docking pin hole is carried out after having shape to finish.
The processing method of existing large size bay section shell docking pin hole is as follows: by machine tooling pin hole bottom outlet, by pincers worker craft
It reams to final size；By the lathe centering centre of gyration, bore, boring processes both ends of the surface pin hole to size.First method meets pin
The requirement of hole aperture size, but not can guarantee pin hole position precision and the requirement of both ends of the surface pin hole concentricity；Second method meets
Pin hole aperture size, the pin hole position accuracy demand that can guarantee each end face, but twice there is certain miss in clamping centering center
Difference is unable to ensure the concentricity requirement of both ends of the surface pin hole.
Summary of the invention
The present invention provides a kind of large-scale bay section shell docking pin hole processing method, solves the medium-and-large-sized bay section shell of the prior art
Dock pin hole machining accuracy, the technical problem of concentricity difference.
In order to solve the above technical problems, the present invention provides a kind of large-scale bay section shells to dock pin hole processing method, comprising:
Machining benchmark centering step:
Table positions clamping, centering rear end inner hole and end face are pasted with front end face, within the 0.05mm that beats, two before and after centering
Outer circle is held, coaxial error is less than or equal to φ 0.1；Coordinate system is determined with rear end face and quadrant line, and is executed based on the coordinate system
Following steps；
Rear end face pin hole procedure of processing:
Pin hole processing bottom outlet, aperture made allowance about 0.2~0.4mm；
Heavy boring pin hole processing, within the made allowance 0.1mm of aperture；
Adjust amount of feed of boring tool, precision bored hole to size；
Size detection step:
Machined pin hole size and location precision is detected using On-machine Test method or butt hole detecting tool；
Technique backing plate procedure of processing:
Part is unloaded, 4 pieces of equal-height padding irons and 2 pieces of technique backing plates are set on the table；
Processing technology pad surfaces guarantee that technique backing plate is lower than equal-height padding iron about 2mm；
It is consistent with rear end face pin hole that pin hole at two, aperture and position dimension are processed on technique backing plate；
Limited block installation steps:
Limited block is installed on workbench, outside limited block position and part back segment within distance of round about 2~5mm, is limited
Position dog height is higher than 15~25mm of equal-height padding iron；Limited block is located at the minor arc side of pin hole position；
Front end face pin hole procedure of processing:
Equal-height padding iron and pin hole positioning and clamping are pasted with rear end face, using positioning pin by the pin on rear end pin hole and technique backing plate
Hole connection positioning；
Pin hole processing bottom outlet, aperture made allowance about 0.2~0.4mm；
Heavy boring pin hole processing, within the made allowance 0.1mm of aperture；
Adjust amount of feed of boring tool, precision bored hole to size.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The large-scale bay section shell docking pin hole processing method provided in the embodiment of the present application, is processed by thick, reboring, is protected
Demonstrate,prove aperture size precision；Using plane and two pits localization method, solve error problem existing for multiple clamping centering, unified base
Standard guarantees component assembly requirement；Using the error-preventive design mode of limited block, guarantee that two pin hole orientations are correct.
Present invention process method rationally, it is reliable, the batch machining period is short, reliable in quality, is effective to ensure that the processing quality of part.
Detailed description of the invention
Fig. 1 is that large-scale bay section shell provided by the invention docks pin hole process principle schematic diagram.
Specific embodiment
The embodiment of the present application is solved big in the prior art by providing a kind of large-scale bay section shell docking pin hole processing method
Type bay section shell docks pin hole machining accuracy, the technical problem of concentricity difference.
In order to better understand the above technical scheme, in conjunction with appended figures and specific embodiments to upper
It states technical solution to be described in detail, it should be understood that the specific features in the embodiment of the present invention and embodiment are to the application skill
The detailed description of art scheme, rather than the restriction to technical scheme, in the absence of conflict, the embodiment of the present application
And the technical characteristic in embodiment can be combined with each other.
Referring to Fig. 1, one embodiment of the present of invention, shell theory height is 840mm, and big end excircle dimension is φ
1035.4mm, small end excircle dimension are φ 926.8mm, and end face pin hole processing successively includes:
Machining benchmark centering step:
Table positions clamping, centering rear end inner hole and end face are pasted with front end face, within the 0.05mm that beats, two before and after centering
Outer circle is held, coaxial error is less than or equal to φ 0.1；Coordinate system is determined with rear end face and quadrant line, and is executed based on the coordinate system
Following steps；
Rear end face pin hole procedure of processing:
Pin hole processing bottom outlet, aperture made allowance about 0.2~0.4mm；
Heavy boring pin hole processing, within the made allowance 0.1mm of aperture；
Adjust amount of feed of boring tool, precision bored hole to size；
Size detection step:
Machined pin hole size and location precision is detected using On-machine Test method or butt hole detecting tool；
Technique backing plate procedure of processing:
Part is unloaded, 4 pieces of equal-height padding irons and 2 pieces of technique backing plates are set on the table；
Processing technology pad surfaces guarantee that technique backing plate is lower than equal-height padding iron about 2mm；
It is consistent with rear end face pin hole that pin hole at two, aperture and position dimension are processed on technique backing plate；
Limited block installation steps:
Limited block is installed on workbench, outside limited block position and part back segment within distance of round about 2~5mm, is limited
Position dog height is higher than 15~25mm of equal-height padding iron；Limited block is located at the minor arc side of pin hole position；
Front end face pin hole procedure of processing:
Equal-height padding iron and pin hole positioning and clamping are pasted with rear end face, using positioning pin by the pin on rear end pin hole and technique backing plate
Hole connection positioning；
Pin hole processing bottom outlet, aperture made allowance about 0.2~0.4mm；
Heavy boring pin hole processing, within the made allowance 0.1mm of aperture；
Adjust amount of feed of boring tool, precision bored hole to size.
One or more technical solutions provided in the embodiments of the present application have at least the following technical effects or advantages:
The large-scale bay section shell docking pin hole processing method provided in the embodiment of the present application, is processed by thick, reboring, is protected
Demonstrate,prove aperture size precision；Using plane and two pits localization method, solve error problem existing for multiple clamping centering, unified base
Standard guarantees component assembly requirement；Using the error-preventive design mode of limited block, guarantee that two pin hole orientations are correct.
Present invention process method rationally, it is reliable, the batch machining period is short, reliable in quality, is effective to ensure that the processing quality of part.
It should be noted last that the above specific embodiment is only used to illustrate the technical scheme of the present invention and not to limit it,
Although being described the invention in detail referring to example, those skilled in the art should understand that, it can be to the present invention
Technical solution be modified or replaced equivalently, without departing from the spirit and scope of the technical solution of the present invention, should all cover
In the scope of the claims of the present invention.
Claims (1)
1. a kind of large size bay section shell docks pin hole processing method characterized by comprising
Machining benchmark centering step:
Table positions clamping, centering rear end inner hole and end face are pasted with front end face, within the 0.05mm that beats, outside centering rear and front end
Circle, coaxial error are less than or equal to φ 0.1；Coordinate system is determined with rear end face and quadrant line, and following based on coordinate system execution
Step；
Rear end face pin hole procedure of processing:
Pin hole processing bottom outlet, aperture 0.2~0.4mm of made allowance；
Heavy boring pin hole processing, within the made allowance 0.1mm of aperture；
Adjust amount of feed of boring tool, precision bored hole to size；
Size detection step:
Using On-machine Test method or butt hole detecting tool, machined pin hole size and location precision is detected；
Technique backing plate procedure of processing:
Part is unloaded, 4 pieces of equal-height padding irons and 2 pieces of technique backing plates are set on the table；
Processing technology pad surfaces guarantee that technique backing plate is lower than equal-height padding iron 2mm；
It is consistent with rear end face pin hole that pin hole at two, aperture and position dimension are processed on technique backing plate；
Limited block installation steps:
Limited block is installed on workbench, within 2~5mm of limited block position and the outer distance of round of part back segment, limited block
Height is higher than 15~25mm of equal-height padding iron；Limited block is located at the minor arc side of pin hole position；
Front end face pin hole procedure of processing:
Equal-height padding iron and pin hole positioning and clamping are pasted with rear end face, is connected the pin hole on rear end pin hole and technique backing plate using positioning pin
Connect positioning；
Pin hole processing bottom outlet, aperture 0.2~0.4mm of made allowance；
Heavy boring pin hole processing, within the made allowance 0.1mm of aperture；
Adjust amount of feed of boring tool, precision bored hole to size.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710849851.7A CN107570970B (en) | 2017-09-20 | 2017-09-20 | A kind of large size bay section shell docking pin hole processing method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710849851.7A CN107570970B (en) | 2017-09-20 | 2017-09-20 | A kind of large size bay section shell docking pin hole processing method |
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| CN107570970A CN107570970A (en) | 2018-01-12 |
| CN107570970B true CN107570970B (en) | 2019-05-21 |
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| CN112589168B (en) * | 2020-12-02 | 2023-03-21 | 航天科工哈尔滨风华有限公司 | Method for machining inner cavity of special-shaped thin-wall cabin section |
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| EP1974851B1 (en) * | 2007-03-30 | 2011-07-13 | Condenser S.R.L. | Method for manufacturing heat exchangers usable as static rack evaporators in cabinet refrigerators or freezers |
| CN103386621A (en) * | 2013-07-31 | 2013-11-13 | 湖北三江航天红阳机电有限公司 | Boring mill clamp for forming inner oblique opening in composite cabin section and method for forming inner oblique opening in composite cabin section |
| CN103753124A (en) * | 2013-12-19 | 2014-04-30 | 湖北三江航天红阳机电有限公司 | Machining method for large cast titanium alloy diamond-shaped cabin shell |
| CN104097789A (en) * | 2014-06-25 | 2014-10-15 | 湖北航天技术研究院总体设计所 | Embedded type cabin section axial horizontal butt joint device and embedded type cabin section axial horizontal butt joint method |
| CN106239066A (en) * | 2016-08-31 | 2016-12-21 | 湖北三江航天红阳机电有限公司 | A kind of processing method of cabin section workpiece |
| CN106271444A (en) * | 2016-08-31 | 2017-01-04 | 湖北三江航天红阳机电有限公司 | The processing method of ceramic matric composite cabin section assembly |
-
2017
- 2017-09-20 CN CN201710849851.7A patent/CN107570970B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1974851B1 (en) * | 2007-03-30 | 2011-07-13 | Condenser S.R.L. | Method for manufacturing heat exchangers usable as static rack evaporators in cabinet refrigerators or freezers |
| CN103386621A (en) * | 2013-07-31 | 2013-11-13 | 湖北三江航天红阳机电有限公司 | Boring mill clamp for forming inner oblique opening in composite cabin section and method for forming inner oblique opening in composite cabin section |
| CN103753124A (en) * | 2013-12-19 | 2014-04-30 | 湖北三江航天红阳机电有限公司 | Machining method for large cast titanium alloy diamond-shaped cabin shell |
| CN104097789A (en) * | 2014-06-25 | 2014-10-15 | 湖北航天技术研究院总体设计所 | Embedded type cabin section axial horizontal butt joint device and embedded type cabin section axial horizontal butt joint method |
| CN106239066A (en) * | 2016-08-31 | 2016-12-21 | 湖北三江航天红阳机电有限公司 | A kind of processing method of cabin section workpiece |
| CN106271444A (en) * | 2016-08-31 | 2017-01-04 | 湖北三江航天红阳机电有限公司 | The processing method of ceramic matric composite cabin section assembly |
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