CN111604521B - Punching device for punching on surface of wing model - Google Patents
Punching device for punching on surface of wing model Download PDFInfo
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- CN111604521B CN111604521B CN202010413506.0A CN202010413506A CN111604521B CN 111604521 B CN111604521 B CN 111604521B CN 202010413506 A CN202010413506 A CN 202010413506A CN 111604521 B CN111604521 B CN 111604521B
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- electric grinder
- fixing device
- drill bit
- hole
- punching
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B41/00—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor
- B23B41/14—Boring or drilling machines or devices specially adapted for particular work; Accessories specially adapted therefor for very small holes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23B—TURNING; BORING
- B23B47/00—Constructional features of components specially designed for boring or drilling machines; Accessories therefor
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- Drilling And Boring (AREA)
Abstract
The invention discloses a punching device for punching a wing model surface, which comprises an electric grinder, wherein the electric grinder is cylindrical, the front end of the electric grinder is provided with a drill bit, and the side surface of the electric grinder is provided with a positioning block; the punching device also comprises a fixing device, the fixing device is in a tubular shape with two open ends, and an inner cavity is formed in the fixing device and is used for electric grinding to penetrate through; the rear end of the fixing device extends forwards to form a strip-shaped groove, and the strip-shaped groove is used for enabling the positioning block to slide forwards and backwards during punching of the electric grinder so as to prevent the electric grinder from horizontally shaking; when the drilling machine is used for drilling, the electric grinder penetrates through the inner cavity of the fixing device, so that the horizontal shaking of the electric grinder in the drilling process can be prevented, and the drill bit is prevented from being damaged; moreover, the positioning blocks on the electric grinder are combined through the strip-shaped grooves in the fixing device, so that the electric grinder can be further limited from shaking, the breakage of the drill bit caused by the shaking of the electric grinder is avoided, and the utilization rate of the drill bit is improved.
Description
Technical Field
The invention belongs to the technical field of wing model experimental equipment, and particularly relates to a punching device for punching on the surface of a wing model.
Background
The wing is one of the important parts of the airplane, is arranged on the airplane body, has the main function of generating lift force, can be internally provided with an ammunition bin and an oil tank, and can store the landing gear in flight. The wing model can be used for experimental analysis of wing characteristics and the like.
The wind tunnel test is a test commonly performed by wing models, and the interaction between the gas flow and the model can be researched through the test so as to know the aerodynamic characteristics of the wing model. In the wind tunnel test, the fluorescent microfilament flow display technology is generally adopted, which is a new method for observing the surface flow field of the test model on the basis of the conventional silk flow display technology, i.e. the fluorescent microfilament is made of synthetic fiber containing fluorescent substances and then fixed on the surface of the test model. The silk thread made of the fiber has extremely small diameter, can ensure the precision and the authenticity of a flow field near the model to a great extent, and greatly reduces the influence on the surface flow field of the test model.
The fluorescent microwire is installed by various methods, but the method with the smallest influence on a flow field is a micropore method, namely, thousands of small holes are punched on the surface of the wing by using a tiny drill bit, and then the fluorescent microwire is planted. When the drill bit is used for punching, the micro drill bit (the thickness of the drill bit is only a few tenths of millimeters) is adopted, so that the drill bit is easy to break during punching, the experimental efficiency is reduced, and meanwhile, the wind tunnel experimental cost is greatly increased.
Disclosure of Invention
The invention aims to provide a punching device for punching on the surface of a wing model, which solves the problem that an electric grinder horizontally shakes during punching.
The invention adopts the following technical scheme: a punching device for punching holes on the surface of a wing model comprises an electric grinder, wherein the electric grinder is cylindrical, a drill bit is installed at the front end of the electric grinder, and a positioning block is arranged on the side surface of the electric grinder;
the punching device also comprises a fixing device, the fixing device is in a tubular shape with two open ends, and an inner cavity is formed in the fixing device and is used for electric grinding to penetrate through;
the rear end of the fixing device extends forwards to be provided with a strip-shaped groove, and the strip-shaped groove is used for sliding the positioning block forwards and backwards when the electric grinder punches so as to prevent the electric grinder from horizontally shaking.
Furthermore, the drill bit is sleeved with a clamping block, the clamping block consists of a stable part and a convergent part which are coaxially arranged, and the stable part is positioned behind the convergent part;
the stabilizing part is a cylinder, and a first axial hole is formed in the stabilizing part; the convergence part is a big-back front small circular truncated cone body, a second axial hole is formed in the convergence part, the first axial hole is communicated with the second axial hole, and the first axial hole and the second axial hole are used for a drill bit to penetrate through.
Further, the stable part and the convergence part are integrally formed.
Further, the diameters of the first and second spindle holes are equal.
Further, the length of the strip-shaped groove is larger than the depth of the hole to be punched.
Furthermore, a clamping piece is arranged in the inner cavity of the fixing device, a third shaft hole is formed in the clamping piece, and the third shaft hole is used for the outer peripheral surface of the electric grinder to penetrate through.
Furthermore, at least two strip-shaped holes are circumferentially formed in the outer side of the third axis hole, are the same in size and are symmetrically arranged relative to the third axis hole.
Furthermore, at least one through hole is formed in the side wall of the fixing device, when the through holes are multiple, the through holes are located at the same horizontal height, and the through holes are evenly distributed on the side wall of the fixing device.
Further, the through hole is located between the front end of the fixing device and the clamping piece.
The invention has the beneficial effects that: when the drilling machine is used for drilling, the electric grinder penetrates through the inner cavity of the fixing device, so that the horizontal shaking of the electric grinder in the drilling process can be prevented, and the drill bit is prevented from being damaged; moreover, the positioning blocks on the electric grinder are combined through the strip-shaped grooves in the fixing device, so that the electric grinder can be further limited from shaking, the breakage of the drill bit caused by the shaking of the electric grinder is avoided, and the utilization rate of the drill bit is improved.
Drawings
FIG. 1 is a schematic diagram of a reference state of an embodiment of the present invention;
FIG. 2 is a schematic view of another embodiment of the present invention;
FIG. 3 is a schematic structural view of a fixing device according to an embodiment of the present invention;
FIG. 4 is a top view of FIG. 3;
FIG. 5 is a schematic structural view of a chuck in an embodiment of the present invention;
fig. 6 is a schematic structural diagram of an electric grinder in an embodiment of the invention.
Wherein: 1. a fixing device; 2. a clamping block; 3. electric grinding;
11. a strip-shaped groove; 12. a through hole; 13. a clip; 131. a strip-shaped hole;
21. a stabilizing section; 22. a converging section;
31. positioning blocks; 32. a drill bit.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings and specific embodiments.
The embodiment of the invention discloses a punching device for punching on the surface of a wing model, which comprises an electric grinder 3, wherein the electric grinder 3 is cylindrical, a drill bit 32 is arranged at the front end of the electric grinder 3, and a positioning block 31 is arranged on the side surface of the electric grinder 3; the perforating device also comprises a fixing device 1, wherein the fixing device 1 is in a tubular shape with two open ends, and an inner cavity is formed in the fixing device 1 and is used for the electric grinder 3 to penetrate through; the rear end of fixing device 1 extends forward and is provided with bar groove 11, and bar groove 11 is used for supplying locating piece 31 to slide from beginning to end when the electric grinder 3 punches to prevent that 3 levels of electric grinder from rocking.
When the drilling machine is used for drilling, the electric grinder penetrates through the inner cavity of the fixing device, so that the horizontal shaking of the electric grinder in the drilling process can be prevented, and further, the drill bit is prevented from being damaged. When the fixing device is used, the fixing device is held by an operator to be fixed on the surface of the wing model, or other fixing modes are adopted, so that the fixing device is fixed relative to the surface of the wing in the punching process. Moreover, the positioning blocks on the electric grinder are combined through the strip-shaped grooves in the fixing device, so that the electric grinder can be further limited from shaking, the breakage of the drill bit caused by the shaking of the electric grinder is avoided, and the utilization rate of the drill bit is improved.
In the embodiment of the invention, as shown in fig. 6, the electric grinder 3 is selected to be cylindrical, the fixing device 1 is selected to be tubular, the inner diameter of the fixing device 1 is slightly larger than the outer diameter of the electric grinder 3, so that a part of the electric grinder 3 can penetrate into the fixing device 1, and further, during punching, due to the limitation of the inner pipe wall of the fixing device 1, the electric grinder 3 cannot shake in the horizontal direction too much, and the drill bit cannot be broken.
In addition, through set up bar groove 11 at the fixing device rear end forward extension, the locating piece 31 on the 3 outer walls of cooperation electric grinder, along with the going on of punching, electric grinder 3 can be along with drill bit 32 forward movement, and at this moment, locating piece 31 also can be at positioning groove 11 internal forward movement, and when locating piece 31 card was inside at positioning groove 11, also can further restrict rocking of electric grinder 3, further avoid because electric grinder 3 rocks the drill bit 32 rupture that arouses.
As a concrete implementation, locating piece 31 is the cylinder of level setting (when punching, the vertical setting of electric grinder, the perpendicular electric grinder of locating piece, the level setting promptly), and it has certain length, and this cylinder can insert in bar groove 11 to wear out the surface in bar groove 11.
In addition, as another specific implementation manner, as shown in fig. 6, the diameters of the two ends of the cylinder may be larger than the diameter of the middle part, the middle part of the cylinder is located in the strip-shaped groove 11, and because the diameters of the two ends of the cylinder are large, when the electric grinder shakes along the length direction of the cylinder, the two ends of the cylinder may be clamped outside the strip-shaped groove 11, i.e. on the inner and outer tube walls of the fixing device 1, so that the cylinder can be prevented from moving to the two ends, thereby preventing the electric grinder 3 from shaking in the direction.
In the embodiment of the present invention, the problem of preventing the electric grinder 3 from shaking is also considered from the perspective of the drill 32, the diameter of the drill is very thin, usually only a few tenths of millimeters, and thus the length of the drill 32 is far greater than the diameter thereof, so that the slender drill itself may shake while drilling, and even the electric grinder 3 is driven to shake. Therefore, the drill 32 is sleeved with the clamping block 2, the clamping block 2 is composed of a fixing part 21 and a converging part 22 which are coaxially arranged, and the fixing part 21 is positioned behind the converging part 22; the stabilizing part 21 is a cylinder, and a first axial hole is formed in the stabilizing part; the convergent portion 22 is a circular truncated cone, and a second axial hole is formed in the convergent portion, and the first axial hole is communicated with the second axial hole. The first and second spindle bores are for the drill bit 32 to pass through.
The clamping block 2 is sleeved on the outer circumferential surface of the drill bit, so that the centripetal force of the drill bit 32 can be improved when the drill bit rotates at a high speed, and the drill bit 32 is prevented from shaking. The clamping block 2 and the drill 32 are assembled in an interference fit manner, and the method has the advantages that the clamping block 2 and the drill 32 are not required to be additionally connected, so that the phenomenon that the weight imbalance of the clamping block 2 and the drill 32 is caused by an additional connection manner (such as welded welding points, adhesive glue and the like) is prevented, and the shaking of the drill 32 is more serious.
The converging portion 22 is a circular truncated cone, the front end surface of the stabilizing portion 21 is connected with the lower bottom surface (i.e. the bottom surface with a large diameter) of the converging portion 22, i.e. the section with a smaller diameter (i.e. the top surface) of the circular truncated cone faces forwards, and the section with a larger diameter (i.e. the bottom surface) faces backwards, the diameter of the circular truncated cone is reduced at the front end close to the drill bit 32, the weight of the circular truncated cone is reduced, the power requirement of the electric grinder 3 can be reduced, and the drilling task can be completed by using the electric grinder 3 with smaller power.
In this embodiment, as shown in fig. 5, the fixing portion 21 and the converging portion 22 are integrally formed, so as to prevent the fixing portion and the converging portion from being separated during the drilling process, thereby preventing the drill 32 from being damaged. In order to increase the firmness of the connection between the clamping block 2 and the drill bit 32, the diameters of the first axial hole and the second axial hole are equal, and the diameters of the first axial hole and the second axial hole are equal to the outer diameter of the drill bit 32, so that the connection between the drill bit 32 and the clamping block 2 is firmer when the drill bit 32 and the clamping block are sleeved.
Specifically, the length of the strip-shaped groove 11 is greater than the depth of the hole to be drilled, so that the positioning block 31 is prevented from being clamped at the lowest part of the strip-shaped groove 11, and the drilling with enough depth is not completed.
As a possible implementation manner, in this embodiment, as shown in fig. 4, a clamping piece 13 horizontally disposed (when drilling, the surface of a general wing model is horizontal, the electric grinder 3 is vertical, the fixing device 1 is vertically disposed, and then, the clamping piece 13 is horizontal at this time) is disposed in the inner cavity, a third axial hole is disposed on the clamping piece 13, the third axial hole is used for passing through the outer circumferential surface of the electric grinder 3, the diameter of the third axial hole is slightly larger than the outer circumferential surface of the electric grinder 3, and further, the amplitude of horizontal shaking of the electric grinder 3 can be further limited through the third axial hole, so as to increase the stability of the electric grinder 3 during drilling.
In the embodiment of the present invention, at least two strip-shaped holes 131 are circumferentially formed on the outer side of the third axis hole, and the two strip-shaped holes 131 have the same size and are symmetrically arranged with respect to the third axis hole. Through the setting of bar hole 131, can alleviate fixing device 1's whole weight, promote its operation convenience.
Specifically, as shown in fig. 3, at least one through hole 12 is formed in the side wall of the fixing device 1, when there are a plurality of through holes 12, the plurality of through holes 12 are at the same horizontal height, and the plurality of through holes 12 are uniformly distributed on the side wall of the fixing device 1. The through hole is located between the bottom end of the fixing device 1 and the clip 13. The overall weight of the fixing device 1 can also be reduced by the through hole 12, and further, the operation of taking and supporting by a user is facilitated. In addition, the through hole 12 is arranged in the front of the fixing device 1, namely between the end and the clamping piece 13, so that an operator can conveniently observe the specific working state of the drill bit 32 during drilling, and further perform corresponding operation adjustment, and on the other hand, the through hole 12 can also be used for radiating the drill bit 32 and the surface of the wing model, and the safety performance during operation is improved.
The invention can fix the drill bit 32 and the electric grinder 3, avoid the drill bit from being broken due to the shaking of human factors during punching, avoid the reduction of the working efficiency due to the breakage and the replacement of the drill bit and save the working time; the drilling bit is well protected, waste of the drilling bit is avoided, and working cost is reduced.
Claims (7)
1. The punching device for punching the surface of the wing model is characterized by comprising an electric grinder (3), wherein the electric grinder (3) is cylindrical, a drill bit (32) is installed at the front end of the electric grinder (3), and a positioning block (31) is arranged on the side surface of the electric grinder (3);
the punching device further comprises a fixing device (1), wherein the fixing device (1) is in a tubular shape with two open ends, and an inner cavity is formed in the fixing device (1) and is used for the electric grinder (3) to penetrate through;
the rear end of the fixing device (1) extends forwards to form a strip-shaped groove (11), and the strip-shaped groove (11) is used for enabling the positioning block (31) to slide forwards and backwards when the electric grinder (3) punches so as to prevent the electric grinder (3) from horizontally shaking;
the drill bit (32) is sleeved with a clamping block (2), the clamping block (2) is composed of a stabilizing part (21) and a converging part (22) which are coaxially arranged, and the stabilizing part (21) is positioned behind the converging part (22);
the stabilizing part (21) is a cylinder, and a first axial hole is formed in the stabilizing part; the convergence part (22) is a circular truncated cone with a large back and a small front, a second axis hole is formed in the convergence part, the first axis hole is communicated with the second axis hole, and the first axis hole and the second axis hole are used for the drill bit (32) to pass through;
the inner cavity of the fixing device (1) is internally provided with a clamping piece (13), a third shaft hole is formed in the clamping piece (13), and the third shaft hole is used for the outer peripheral surface of the electric grinder (3) to penetrate through.
2. A perforating device for making holes in the surface of airfoil models according to claim 1, characterized in that the stabilizing portion (21) is formed integrally with the converging portion (22).
3. The apparatus according to claim 1 or 2, wherein the first and second axial holes have the same diameter.
4. A perforating device for making holes in the surface of a wing model as claimed in claim 1, characterized in that the length of the strip-shaped slot (11) is greater than the depth of the hole to be perforated.
5. The perforating device for perforating on the surface of the airfoil model according to claim 1, characterized in that at least two strip-shaped holes (131) are circumferentially arranged outside the third axial hole, and the two strip-shaped holes (131) have the same size and are symmetrically arranged relative to the third axial hole.
6. The perforating device for perforating the surface of the airfoil model according to claim 1, characterized in that at least one through hole (12) is formed in the sidewall of the fixture (1), and when there are a plurality of through holes (12), the plurality of through holes (12) are at the same level, and the plurality of through holes (12) are evenly distributed in the sidewall of the fixture (1).
7. A perforating device for making holes in the surface of airfoil models according to claim 6, characterized in that the through-hole is located between the front end of the fixture (1) and the jaw (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010413506.0A CN111604521B (en) | 2020-05-15 | 2020-05-15 | Punching device for punching on surface of wing model |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010413506.0A CN111604521B (en) | 2020-05-15 | 2020-05-15 | Punching device for punching on surface of wing model |
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| Publication Number | Publication Date |
|---|---|
| CN111604521A CN111604521A (en) | 2020-09-01 |
| CN111604521B true CN111604521B (en) | 2021-11-12 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010413506.0A Active CN111604521B (en) | 2020-05-15 | 2020-05-15 | Punching device for punching on surface of wing model |
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| CN (1) | CN111604521B (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4082474A (en) * | 1977-01-07 | 1978-04-04 | Stiger Darrel E | Drill attachment |
| CN203076643U (en) * | 2013-02-01 | 2013-07-24 | 哈尔滨华强电力电站设备修造有限责任公司 | High-pressure inner cylinder H-shaped groove screw hole machining device |
| CN103406570A (en) * | 2013-08-07 | 2013-11-27 | 苏州市合昌电器有限公司 | Pistol drill perpendicularity guiding device |
| CN204486857U (en) * | 2015-01-27 | 2015-07-22 | 朱俊儒 | Preventing scrap noise control electric drill protective device |
| CN205614094U (en) * | 2016-05-03 | 2016-10-05 | 无锡市光彩机械制造有限公司 | A device that is used for an axle type terminal surface centering |
-
2020
- 2020-05-15 CN CN202010413506.0A patent/CN111604521B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4082474A (en) * | 1977-01-07 | 1978-04-04 | Stiger Darrel E | Drill attachment |
| CN203076643U (en) * | 2013-02-01 | 2013-07-24 | 哈尔滨华强电力电站设备修造有限责任公司 | High-pressure inner cylinder H-shaped groove screw hole machining device |
| CN103406570A (en) * | 2013-08-07 | 2013-11-27 | 苏州市合昌电器有限公司 | Pistol drill perpendicularity guiding device |
| CN204486857U (en) * | 2015-01-27 | 2015-07-22 | 朱俊儒 | Preventing scrap noise control electric drill protective device |
| CN205614094U (en) * | 2016-05-03 | 2016-10-05 | 无锡市光彩机械制造有限公司 | A device that is used for an axle type terminal surface centering |
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| Publication number | Publication date |
|---|---|
| CN111604521A (en) | 2020-09-01 |
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