CN113732367A - Reaming-countersinking integrated cutter - Google Patents
Reaming-countersinking integrated cutter Download PDFInfo
- Publication number
- CN113732367A CN113732367A CN202010468434.XA CN202010468434A CN113732367A CN 113732367 A CN113732367 A CN 113732367A CN 202010468434 A CN202010468434 A CN 202010468434A CN 113732367 A CN113732367 A CN 113732367A
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- China
- Prior art keywords
- reaming
- countersinking
- section
- countersink
- reamer
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 13
- 230000007704 transition Effects 0.000 claims abstract description 13
- 229910017052 cobalt Inorganic materials 0.000 claims description 4
- 239000010941 cobalt Substances 0.000 claims description 4
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 4
- 239000002344 surface layer Substances 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 13
- 238000003754 machining Methods 0.000 abstract description 6
- 239000000956 alloy Substances 0.000 description 8
- 229910045601 alloy Inorganic materials 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 3
- 238000005553 drilling Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 230000008707 rearrangement Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Images
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B51/00—Tools for drilling machines
- B23B51/08—Drills combined with tool parts or tools for performing additional working
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23D—PLANING; SLOTTING; SHEARING; BROACHING; SAWING; FILING; SCRAPING; LIKE OPERATIONS FOR WORKING METAL BY REMOVING MATERIAL, NOT OTHERWISE PROVIDED FOR
- B23D77/00—Reaming tools
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Milling, Broaching, Filing, Reaming, And Others (AREA)
Abstract
The invention relates to the technical field of machining tools and discloses a reaming and countersinking integrated cutter. The reaming-countersinking integrated cutter comprises a reaming section, a countersinking section and a mounting section, wherein the reaming section comprises a reamer guide post and three reamers which are spirally arranged on the reamer guide post, and the three reamers are arranged at equal intervals along the circumferential direction of the reamer guide post; the countersink section comprises three countersinks which are connected with the reamers in a one-to-one correspondence mode, and transition fillets are arranged at the joints of the countersinks and the reamers; the mounting section is arranged at one end, far away from the reaming section, of the countersink section and used for mounting a reaming-countersink integrated cutter. According to the reaming and countersinking device, the number of the reamers and the number of the countersinks are three, so that the stability and the centering property of reaming and countersinking are improved; the transition fillet is arranged at the joint of the countersink and the reamer, so that the surface quality of the countersink is improved; the reaming and countersinking operation on the aluminum alloy part can be realized on the whole, the hole making process is simplified, the hole making efficiency is improved, and the labor intensity of operators is reduced.
Description
Technical Field
The invention relates to the technical field of machining tools, in particular to a reaming and countersinking integrated cutter.
Background
The aviation aluminum alloy is cold-processed forging alloy and has the characteristics of high strength, high specific strength, corrosion resistance, good mechanical property, anode reaction and the like. The aluminum alloy is widely applied to large civil passenger planes, such as C919 aluminum alloy accounts for more than 60 percent. The aluminum alloy material is required to be connected with other structures in the application process, the connection is a weak link of the aluminum alloy material structure, and 60-80% of damage in the aerospace craft occurs to the connection part. A large number of aluminum alloy connecting holes of various types and sizes are required to be processed in modern airplanes, and extremely high requirements are provided for hole forming precision, hole forming quality and hole forming efficiency so as to guarantee the service performance of airplane structural parts and the safety of airplanes. A large number of manual hole making tasks of each machine provide greater challenges for hole making cutters, and the importance of improving the efficiency of manual hole making in hole making work is gradually highlighted.
The traditional manual hole drilling process of drilling, multi-step expanding, reaming and countersinking has the defects of various steps, fussy tool management, troublesome tool selection of operators, easy error, high labor intensity of workers and low hole drilling efficiency. These current conditions have become a significant cause of limitations on the efficiency and quality of assembly of civil aircraft.
Therefore, a reaming and countersinking integrated tool is needed to simplify the conventional hole making process.
Disclosure of Invention
Based on the above, the invention aims to provide the reaming-countersinking integrated tool, which simplifies the hole making process, improves the hole making efficiency and also reduces the labor intensity of operators.
In order to achieve the purpose, the invention adopts the following technical scheme:
a reaming and countersinking integrated tool for machining holes in aluminum alloy comprises:
the reaming section comprises a reamer guide post and three reamers which are arranged on the reamer guide post in a spiral mode, and the three reamers are arranged at equal intervals along the circumferential direction of the reamer guide post;
the countersink section comprises three countersinks which are connected with the reamers in a one-to-one corresponding mode, and a transition fillet is arranged at the joint of the countersinks and the reamers;
and the mounting section is arranged at one end, far away from the reaming section, of the countersink section and is used for mounting a reaming-countersink integrated cutter.
As a preferred scheme of the reaming-countersinking integrated cutter, a groove is formed in the joint of the reamer guide post and the reamer, and the groove is formed along the circumferential direction of the reamer guide post.
As a preferable scheme of the reaming-dimpling integrated cutter, the width of the groove is 0.5mm, and the depth of the groove is 0.5 mm.
As a preferable scheme of the reaming-dimpling integrated cutter, the radius of the transition round angle is 1.5 mm.
As a preferable scheme of the reaming-socket integrated cutter, a first taper angle is arranged on the reaming-socket section close to the reaming section, and the first taper angle is 95-105 degrees.
As a preferable scheme of the integral reaming-countersinking tool, one end of the countersinking section close to the mounting section is provided with a second taper angle, and the second taper angle is 115 degrees and 125 degrees.
As a preferred scheme of the reaming-countersinking integrated cutter, an included angle between the reamer and the axis of the reamer guide post is 6-10 degrees.
As a preferable scheme of the reaming-countersinking integrated tool, one side of the mounting section, which is close to the countersinking section, is provided with a tool withdrawal groove.
As a preferable scheme of the reaming and countersinking integrated cutter, the reaming and countersinking integrated cutter is made of hard alloy, and the cobalt content of the hard alloy at the thickness of less than or equal to 0.5mm on the surface layer of the reaming and countersinking integrated cutter is 2%.
As a preferable scheme of the reaming and countersinking integrated tool, the outer wall of the mounting section is provided with threads.
The invention has the beneficial effects that: the reamer and the countersink are three, so that the stability and the centering property of reaming and countersinking are improved; the transition fillet is arranged at the joint of the countersink and the reamer, so that the transition fillet plays a role in guiding during countersinking on one hand, and the surface quality of the countersink is improved on the other hand; the reaming-countersinking integrated tool can simultaneously realize reaming and countersinking operations on an aluminum alloy part through one tool, combines the last two steps of a manual multi-step hole making process, reduces the types of the tools, simplifies the tool management and the hole making process, effectively avoids frequent tool changing operation of operators, improves the hole making efficiency, lightens the labor intensity of the operators, and simultaneously solves the quality problems of complicated procedures, easy error, repeated positioning precision and the like of manual hole making in the aircraft assembly process, and the production problems of high tool management and processing cost and the like.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments of the present invention will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the contents of the embodiments of the present invention and the drawings without creative efforts.
FIG. 1 is a schematic view of a reaming and countersinking integrated tool according to an embodiment of the present invention;
FIG. 2 is a cross-sectional view taken at A-A of FIG. 1;
fig. 3 is a partially enlarged schematic view at B in fig. 1.
In the figure:
1-reaming section; 11-reamer guide post; 111-grooves; 12-a reamer;
2-reaming dimple section; 21-countersinking; 22-transition fillets; 23-a first cone angle; 24-second taper angle;
3-mounting a section; 31-relief groove.
Detailed Description
In order to make the technical problems solved, technical solutions adopted and technical effects achieved by the present invention clearer, the technical solutions of the embodiments of the present invention will be described in further detail below with reference to the accompanying drawings, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-3, the present embodiment provides a reaming and countersinking integrated tool for processing holes on an aluminum alloy part, the reaming and countersinking integrated tool includes a reaming section 1, a countersinking section 2 and a mounting section 3, which are sequentially arranged, the reaming section 1 includes a reamer guide post 11 and three reamers 12 spirally arranged on the reamer guide post 11, the three reamers 12 are arranged at equal intervals along the circumferential direction of the reamer guide post 11; the dimple section 2 comprises three countersinks 21 which are connected with the reamers 12 in a one-to-one correspondence mode, and transition fillets 22 are arranged at the joints of the countersinks 21 and the reamers 12; the mounting section 3 is arranged at one end, far away from the reaming section 1, of the socket section 2 and used for mounting a reaming-socket integrated cutter.
The three reamers 12 and the three countersinks 21 are arranged, so that the stability and the centering property of reaming and countersinking are improved; the transition fillet 22 is arranged at the joint of the countersink 21 and the reamer 12, so that the guide function is realized during countersinking on one hand, and the improvement of the surface quality of the countersinking is facilitated on the other hand; the reaming-countersinking integrated tool can simultaneously realize reaming and countersinking operations on an aluminum alloy part through one tool, combines the last two steps of a manual multi-step hole making process, reduces the types of the tools, simplifies the tool management and the hole making process, effectively avoids frequent tool changing operation of operators, improves the hole making efficiency, lightens the labor intensity of the operators, and simultaneously solves the quality problems of complicated procedures, easy error, repeated positioning precision and the like of manual hole making in the aircraft assembly process, and the production problems of high tool management and processing cost and the like.
Specifically, two transitions are arranged in the reaming and countersinking integrated cutter, wherein one transition fillet 22 is arranged at the joint of the countersinking 21 and the reamer 12, so that the effect of improving the surface quality of the countersinking can be achieved; more specifically, the radius of the transition fillets 22 is 1.5 mm. The other part is a groove 111 at the joint of the reamer guide post 11 and the reamer 12, which is beneficial to improving the stability of the reaming-countersinking integrated cutter when entering aluminum alloy and improving the arrangement of the groove 111 along the circumferential direction of the reamer guide post 11; more specifically, the groove 111 has a width of 0.5mm and a depth of 0.5 mm.
Further, a first taper angle 23 is arranged on the countersink 21 of the countersink section 2 close to the reaming section 1, and the first taper angle 23 is 95-105 degrees; one end of the dimple segment 2 close to the mounting segment 3 is provided with a second taper angle 24, and the second taper angle 24 is 115 degrees and 125 degrees; the included angle between the reamer 12 and the axis of the reamer guide post 11 is 6-10 degrees. In this embodiment, the first taper angle 23 is set to 100 °, the second taper angle 24 is set to 120 °, and the angle between the reamer 12 and the axis of the reamer guide post 11 is 8 °.
Preferably, the outer wall of the mounting section 3 is provided with threads for mounting a reaming-countersinking integrated tool, and meanwhile, a relief groove 31 is formed on one side of the mounting section 3 close to the countersinking section 2, so that the mounting section 3 and the second taper angle 24 can be conveniently machined.
It is worth to be noted that, in order to improve the strength of the reaming-dimpling integrated cutter, the reaming-dimpling integrated cutter is made of hard alloy, specifically, the hard alloy material with gradually distributed cobalt has a grain size of 0.2 μm, and the cobalt content of the hard alloy is 2% within 0.5mm of the surface layer of the reaming-dimpling integrated cutter. The machining of the reaming-countersinking integrated cutter adopts a high-precision five-axis numerical control tool, which is beneficial to ensuring the machining precision of the reaming-countersinking integrated cutter and further ensuring the precision of a hole machined by the reaming-countersinking integrated cutter.
Furthermore, the reaming section 1, the counter boring section 2 and the mounting section 3 are coaxially arranged, so that the machining precision of the reaming-counter boring integrated cutter can be ensured when the reaming-counter boring integrated cutter rotates to machine a hole; in addition, the diameter of the dimple section 2 is 2 times the diameter of the reaming section 1. In this embodiment, the diameter of the reaming section 1 is 5mm, and the diameter of the dimple section 2 is 10 mm.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance. Wherein the terms "first position" and "second position" are two different positions.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, e.g., as meaning either a fixed connection, a removable connection, or an integral connection; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Claims (10)
1. A hinge-dimple integrated cutter for processing holes on aluminum alloy is characterized by comprising:
the reaming section (1) comprises a reamer guide post (11) and three reamers (12) which are arranged on the reamer guide post (11) in a spiral mode, and the three reamers (12) are arranged at equal intervals along the circumferential direction of the reamer guide post (11);
the counter sink segment (2) comprises three counter sinks (21) which are connected with the reamers (12) in a one-to-one corresponding mode, and transition fillets (22) are arranged at the joints of the counter sinks (21) and the reamers (12);
and the mounting section (3) is arranged at one end of the socket section (2) far away from the socket section (1) and is used for mounting a hinge-socket integrated cutter.
2. The reaming and countersinking integrated tool according to claim 1, wherein a groove (111) is formed at the joint of the reamer guide post (11) and the reamer (12), and the groove (111) is formed along the circumferential direction of the reamer guide post (11).
3. The reaming and countersinking integrated tool according to claim 2, wherein said groove (111) has a width of 0.5mm and a depth of 0.5 mm.
4. The reaming and countersinking integrated tool according to claim 1, wherein said transition radius (22) has a radius of 1.5 mm.
5. The reamer-countersink integral tool according to claim 1, wherein said countersink segment (2) is provided with a first taper angle (23) on said countersink (21) adjacent to said countersink segment (1), said first taper angle (23) being 95-105 °.
6. The reaming and countersinking integrated tool according to claim 1, wherein the countersink segment (2) is provided with a second taper angle (24) at an end close to the mounting segment (3), and the second taper angle (24) is 115 degrees and 125 degrees.
7. The reaming and countersinking integrated tool according to claim 1, wherein the angle between the reamer (12) and the axis of the reamer guide post (11) is 6-10 °.
8. The tool according to claim 1, wherein the side of the mounting section (3) close to the socket section (2) is provided with a relief (31).
9. The reamer-countersink integrated tool according to claim 1, wherein the surface layer of the reamer-countersink integrated tool is made of cemented carbide, and the cobalt ratio of the cemented carbide at a thickness of 0.5mm or less is 2%.
10. The reaming and countersinking integrated tool according to claim 1, wherein the outer wall of said mounting section (3) is provided with a thread.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468434.XA CN113732367A (en) | 2020-05-28 | 2020-05-28 | Reaming-countersinking integrated cutter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010468434.XA CN113732367A (en) | 2020-05-28 | 2020-05-28 | Reaming-countersinking integrated cutter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN113732367A true CN113732367A (en) | 2021-12-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010468434.XA Pending CN113732367A (en) | 2020-05-28 | 2020-05-28 | Reaming-countersinking integrated cutter |
Country Status (1)
| Country | Link |
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| CN (1) | CN113732367A (en) |
Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617814U (en) * | 1992-08-06 | 1994-03-08 | 孝喜 堂田 | Step drill for hexagon socket head cap bolt |
| US20040261874A1 (en) * | 2003-06-30 | 2004-12-30 | Keiper Michael C | Method and components for repairing broken conduit extending from concrete foundations |
| CN102794486A (en) * | 2012-08-22 | 2012-11-28 | 浙江大学 | Compound tool applicable to high-speed and accurate holing on aircraft panel |
| CN203343544U (en) * | 2013-06-27 | 2013-12-18 | 山东工具制造有限公司 | Taper-shank countersinking and reaming cutter |
| CN203804332U (en) * | 2014-02-19 | 2014-09-03 | 东风朝阳朝柴动力有限公司 | Machining multifunctional composite cutting tool |
| CN204603399U (en) * | 2015-03-30 | 2015-09-02 | 四平博尔特工艺装备有限公司 | Whole hard alloy socket drill |
| CN204639254U (en) * | 2015-05-21 | 2015-09-16 | 成都飞机工业（集团）有限责任公司 | A kind of carbide drill reaming and milling composite cutter |
| CN106001771A (en) * | 2016-06-17 | 2016-10-12 | 哈尔滨汽轮机厂有限责任公司 | Screw pin hole reamer and method for machining screw pin hole of exhaust cylinder of gas turbine by means of screw pin hole reamer |
| CN205996315U (en) * | 2016-09-21 | 2017-03-08 | 山东工具制造有限公司 | Compound ream reamer |
| CN107255461A (en) * | 2017-06-28 | 2017-10-17 | 清华大学 | Measure the method that the counter boring sword for the ream integrated cutter that drills and reams originates distance |
| CN208680610U (en) * | 2018-08-02 | 2019-04-02 | 南京多特工具有限公司 | Combined type rivet hole spot-facing structure |
| CN209830302U (en) * | 2019-05-10 | 2019-12-24 | 国宏工具系统（无锡）股份有限公司 | PCD (polycrystalline Diamond) forming cutter for processing aviation composite material |
-
2020
- 2020-05-28 CN CN202010468434.XA patent/CN113732367A/en active Pending
Patent Citations (12)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0617814U (en) * | 1992-08-06 | 1994-03-08 | 孝喜 堂田 | Step drill for hexagon socket head cap bolt |
| US20040261874A1 (en) * | 2003-06-30 | 2004-12-30 | Keiper Michael C | Method and components for repairing broken conduit extending from concrete foundations |
| CN102794486A (en) * | 2012-08-22 | 2012-11-28 | 浙江大学 | Compound tool applicable to high-speed and accurate holing on aircraft panel |
| CN203343544U (en) * | 2013-06-27 | 2013-12-18 | 山东工具制造有限公司 | Taper-shank countersinking and reaming cutter |
| CN203804332U (en) * | 2014-02-19 | 2014-09-03 | 东风朝阳朝柴动力有限公司 | Machining multifunctional composite cutting tool |
| CN204603399U (en) * | 2015-03-30 | 2015-09-02 | 四平博尔特工艺装备有限公司 | Whole hard alloy socket drill |
| CN204639254U (en) * | 2015-05-21 | 2015-09-16 | 成都飞机工业（集团）有限责任公司 | A kind of carbide drill reaming and milling composite cutter |
| CN106001771A (en) * | 2016-06-17 | 2016-10-12 | 哈尔滨汽轮机厂有限责任公司 | Screw pin hole reamer and method for machining screw pin hole of exhaust cylinder of gas turbine by means of screw pin hole reamer |
| CN205996315U (en) * | 2016-09-21 | 2017-03-08 | 山东工具制造有限公司 | Compound ream reamer |
| CN107255461A (en) * | 2017-06-28 | 2017-10-17 | 清华大学 | Measure the method that the counter boring sword for the ream integrated cutter that drills and reams originates distance |
| CN208680610U (en) * | 2018-08-02 | 2019-04-02 | 南京多特工具有限公司 | Combined type rivet hole spot-facing structure |
| CN209830302U (en) * | 2019-05-10 | 2019-12-24 | 国宏工具系统（无锡）股份有限公司 | PCD (polycrystalline Diamond) forming cutter for processing aviation composite material |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20211203 |
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| RJ01 | Rejection of invention patent application after publication |