CN221494253U - A semi-automatic boring device for fine machining of aircraft intersection holes - Google Patents
A semi-automatic boring device for fine machining of aircraft intersection holes Download PDFInfo
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- CN221494253U CN221494253U CN202323146142.2U CN202323146142U CN221494253U CN 221494253 U CN221494253 U CN 221494253U CN 202323146142 U CN202323146142 U CN 202323146142U CN 221494253 U CN221494253 U CN 221494253U
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Abstract
The application discloses a semi-automatic boring device for finish machining of an airplane intersection point hole system, which comprises a front drill jig, a rear drill jig, hanging nails, a positioning guide sleeve, an automatic feeding drill, a sleeved boring cutter, a set screw and an adapter. The front guide rod sleeved with the boring cutter is matched with the inner hole of the front drill jig to play a role in guiding and positioning, and the rear guide rod penetrates through the inner hole of the boring guide sleeve and is connected with the automatic feeding drill through the adapter. The boring guide sleeve is connected to the nose pipe end of the automatic feeding drill through threads, the outer circle of the guide sleeve is matched and positioned with the inner hole of the rear drill jig, and the hanging nails on the rear drill jig are rotationally locked with the guide sleeve shoulder spiral grooves. The semi-automatic boring device has high processing efficiency, the boring cutter head is of a three-tooth machine clamping blade structure, the blade is indexable and is provided with a coating, and the service life is long; the boring cutter head and the cutter bar are standard 1:30 taper positioning cooperation, the repeated precision of location is high, simple operation, practicality are strong.
Description
Technical Field
The application relates to the technical field of hole making and machining in aircraft assembly connection, in particular to a semi-automatic boring device for large-aperture finish machining of an aircraft intersection hole.
Background
The finish machining of the intersection point holes of the key butt joint parts of the aircraft is a key technology for guaranteeing the assembly effect, and the intersection point holes have the characteristics of large aperture size, high precision requirement, special materials and complex working conditions, and the surface quality of the aperture, the aperture precision and the coaxiality of the hole system can directly influence the quality of the aircraft assembly, so that the aircraft assembly is not only related to the flight safety of the aircraft, but also is a great difficulty in the field of aviation assembly manufacturing.
At present, the finish machining of the intersection point hole of the airplane is mostly based on manual reaming and reaming under the clamping of a traditional hard tool, and the hole making efficiency is low and the assembly quality is unstable; some research institutions consider that the parallel machine tool is used for finish machining of the intersection point holes, but the machining of each intersection point hole on an airplane cannot be guaranteed due to the fact that the shape of the intersection point hole is large, movement is difficult, working stroke is severely limited; the system is complex in structure and high in cost, is only suitable for drilling rivet and bolt mounting holes with smaller diameters, and is in a research stage for large-aperture machining with diameters exceeding 40 mm.
Disclosure of Invention
In order to solve the problems, the application provides a semi-automatic boring device for finishing an airplane intersection hole system.
The technical scheme of the application is as follows:
A semi-automatic boring device for finish machining of an airplane intersection point hole system comprises a front drill jig, a rear drill jig, a hanging nail, a boring guide sleeve, an automatic feeding drill, a boring cutter sleeved with a screw pin, an adapter and a set screw, wherein the boring cutter sleeved with the drill cutter comprises a boring cutter bar and a boring cutter head fixed at the end head of the boring cutter bar, one end of the adapter is connected with a main shaft of the automatic feeding drill through threads, the other end of the adapter is locked with the boring cutter bar laterally through the set screw, a part to be bored is fixed between the front drill jig and the rear drill jig, a front guide rod of the boring cutter bar is matched with an inner hole of the front drill jig to perform a guiding and positioning function, a rear guide rod penetrates through the inner hole of the boring guide sleeve, one end of the boring guide sleeve is connected with the end of a nose pipe of the automatic feeding drill through external threads, a shoulder spiral groove is arranged in the middle of the boring guide sleeve, the outer circle of the other end of the boring guide sleeve is matched with the inner hole of the rear drill jig, and the hanging nail and the shoulder spiral groove are mounted on the rear drill jig in a rotating mode, and when boring is performed, the stroke of the automatic feeding drill is preset according to the thickness of the part.
Further, the boring head and the boring bar are standard 1:30 taper fit and tightened by screws.
Further, the boring cutter head is of a three-tooth machine clamp blade structure, the cutting back angle of the blade is 2-3 degrees, the blade is indexable and provided with a coating, and the cutter body is provided with a cutter body 1:30 taper inner hole.
Further, one end of the adapter is a threaded handle and is connected with the automatic feeding drill, the other end of the adapter is inserted into a boring cutter bar, a cutter bar handle is grooved, and the adapter is installed in a laterally propping mode through a set screw.
The application has the advantages that the processing efficiency of the semi-automatic boring device of the intersection point hole system is high, and the labor intensity of workers is reduced; the boring cutter head is of a three-tooth machine clamp blade structure, one blade can be used for 4 times in an indexing way, and the blade is coated, so that the service life is long; the boring cutter head and the cutter bar are standard 1:30 taper positioning cooperation, the repeated precision of location is high, simple operation, practicality are strong.
The present application will be described in further detail with reference to the accompanying drawings and examples.
Drawings
FIG. 1 is a schematic diagram of a semi-automatic boring device
FIG. 2 is a detailed view of a machine-added blade type boring cutter set
FIG. 3 is a view in the direction A-A of the detail of the machine tool insert set boring tool provided in FIG. 2
The numbering in the figures illustrates: 1. a front drill jig; 2. a part; 3. a rear drill jig; 4. automatic feeding drill; 5. a set screw; 6. an adapter; 7. boring a cutter head; 8. a screw pin; 9. hanging nails; 10. boring guide sleeve; 11. boring cutter bar.
Detailed Description
As shown in fig. 1-3, the semi-automatic boring device for finish machining of the airplane intersection point hole system comprises a front drilling jig 1, a rear drilling jig 3, a hanging nail 9, a boring guide sleeve 10, an automatic feed drill 4, a sleeved boring cutter, a screw pin 8, an adapter 6 and a set screw 5, wherein the sleeved boring cutter comprises a boring cutter bar 11 and a boring cutter head 7 fixed at the end of the boring cutter bar 11, one end of the adapter 6 is connected with a main shaft of the automatic feed drill 4 through threads, the other end of the adapter 6 is locked with the boring cutter bar 11 in a lateral direction through the set screw 5, a part 2 to be bored is fixed between the front drilling jig 1 and the rear drilling jig 3, a front guide rod of the boring cutter bar 11 is matched with an inner hole of the front drilling jig 1 to play a guiding and positioning role, a rear guide rod penetrates through the inner hole of the boring guide sleeve 10, one end of the boring guide sleeve 10 is connected with a nose pipe end of the automatic feed drill 4 through external threads, a shoulder spiral groove is formed in the middle of the boring guide sleeve 10, the outer circle of the other end of the boring guide sleeve 10 is matched with the inner hole of the rear drilling jig 3, and the automatic feed drill travel of the automatic feed drill 4 is started through the hanging nail and the spiral groove mounted on the rear drilling jig 3, and the shoulder groove is locked, when boring is performed, the part 2 is preset, according to the thickness, and the automatic drilling is started.
The boring cutter is of a sleeved structure, as shown in fig. 2 and 3, the boring cutter head 7 and the cutter bar 11 are of a standard 1:30 taper positioning fit, screw through the screw round pin 8, the repeated precision of location is high, simple operation and cutter arbor can be general.
The boring cutter head 7 is of a three-tooth machine clamping blade structure, the cutting back angle of the blade is 2-3 degrees, and the blade is indexable and provided with a coating.
One end of the adapter 6 is a threaded handle and is connected with the automatic feed drill 4, the other end of the adapter is inserted into a boring cutter bar 11, a cutter bar handle is grooved, and the adapter is laterally and tightly propped against the boring cutter bar through a set screw 5.
Before the hole is made, the adapter 6 is connected with the automatic feeding drill 4 through threads, the boring guide sleeve 10 is arranged on the front nose of the automatic feeding drill 4, and then the sleeved boring cutter passes through the boring guide sleeve 10 and stretches into the automatic feeding drill 4 to be fixedly connected with the adapter;
When the boring tool is used, the mounted device is lifted, a front guide rod of the boring tool is inserted into an inner hole of the front drill jig 1, the outer circle of the boring guide sleeve 10 is slowly inserted into an inner hole of the rear drill jig 3, and after the boring guide sleeve 10 is mounted in place, the automatic feeding drill 4 is rotated to lock a spiral groove of the boring guide sleeve 10 with the hanging nail 9;
starting the automatic feeding drill 4, and automatically retracting the cutter after boring is finished.
Claims (4)
1. The semi-automatic boring device for the finish machining of the airplane intersection point hole system is characterized by comprising a front drill jig, a rear drill jig, a hanging nail, a boring guide sleeve, an automatic feeding drill, a sleeved boring cutter, a screw pin, an adapter and a set screw, wherein the sleeved boring cutter comprises a boring cutter bar and a boring cutter head fixed at the end head of the boring cutter bar, one end of the adapter is connected with a main shaft of the automatic feeding drill through threads, the other end of the adapter is locked with the boring cutter bar laterally through the set screw, a part to be bored is fixed between the front drill jig and the rear drill jig, a front guide rod of the boring cutter bar is matched with an inner hole of the front drill jig to perform a guiding and positioning function, the rear guide rod penetrates through the inner hole of the boring guide sleeve, one end of the boring guide sleeve is externally connected with the end head of the automatic feeding drill through threads, a shoulder spiral groove is formed in the middle of the boring guide sleeve, and the outer circle at the other end of the boring guide sleeve is matched with the inner hole of the rear drill jig, and the hanging nail arranged on the rear drill jig is rotationally locked with the shoulder spiral groove.
2. The semi-automatic boring device for finishing the intersection point hole system of the airplane according to claim 1, wherein the boring cutter head and the boring cutter bar are standard 1:30 taper fit and tightened by screws.
3. The semi-automatic boring device for finishing the airplane intersection hole system according to claim 1, wherein the boring tool bit is of a three-tooth machine clamping blade structure, the cutting back angle of the blade is 2-3 degrees, the blade is indexable and coated, and the tool body is provided with a structure of 1:30 taper inner hole.
4. The semi-automatic boring device for finishing the intersection hole of the airplane according to claim 1, wherein one end of the adapter is a threaded handle and is connected with the automatic feed drill, the other end of the adapter is inserted into a boring cutter bar, a cutter bar handle is grooved, and the boring cutter bar is laterally and tightly pressed and installed through a set screw.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323146142.2U CN221494253U (en) | 2023-11-21 | 2023-11-21 | A semi-automatic boring device for fine machining of aircraft intersection holes |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323146142.2U CN221494253U (en) | 2023-11-21 | 2023-11-21 | A semi-automatic boring device for fine machining of aircraft intersection holes |
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| Publication Number | Publication Date |
|---|---|
| CN221494253U true CN221494253U (en) | 2024-08-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323146142.2U Active CN221494253U (en) | 2023-11-21 | 2023-11-21 | A semi-automatic boring device for fine machining of aircraft intersection holes |
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| CN (1) | CN221494253U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119525542A (en) * | 2024-11-15 | 2025-02-28 | 中航西安飞机工业集团股份有限公司 | A split boring tool and a manufacturing method thereof |
-
2023
- 2023-11-21 CN CN202323146142.2U patent/CN221494253U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN119525542A (en) * | 2024-11-15 | 2025-02-28 | 中航西安飞机工业集团股份有限公司 | A split boring tool and a manufacturing method thereof |
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