Vent hole machining device
By designing a connection method between the fixed handle and the perforating needle, the problem of easy deformation and detachment of the perforating needle was solved, achieving efficient and safe processing of sound insulation cotton ventilation holes and reducing costs.
Patent Information
- Application Number
- CN202520243755.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-17
- Publication Date
- 2025-12-12
- Estimated Expiration
- 2035-02-17
AI Technical Summary
The existing perforation needles used in processing ventilation holes for sound insulation cotton have weak resistance to bending deformation, making them prone to deformation, breakage, or detachment. This results in poor processing quality, low efficiency, and difficulty in replacement, increasing costs.
A ventilation hole processing device was designed, including a fixed handle, a fixing component, and a piercing needle. The piercing needle is connected to the fixing component through a stepped hole, and the tail of the needle abuts against the stepped surface and the fixed handle. A limiting component is used to fix the needle, ensuring that the piercing needle is not easily deformed or detached, and the piercing needle can be disassembled and replaced.
It improves the bending resistance of the perforating needle, avoids deformation and detachment, reduces tool replacement costs, ensures processing quality and efficiency, and is simple in structure, safe and reliable in operation, and economical and practical.
Smart Images
Figure CN223657200U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of aerospace machinery manufacturing technology, and in particular to a ventilation hole processing device. Background Technology
[0002] Due to the lower temperatures at high altitudes and the louder engine noise, aircraft fuselages require a large amount of sound-absorbing material to insulate against external heat and noise. This sound-absorbing material is made of a non-breathable, flexible, fire-resistant material wrapped with fiberglass and foam, playing a crucial role in ensuring aircraft safety.
[0003] During the processing of sound insulation cotton, ventilation holes, drainage holes, and cross grooves need to be machined at specified locations on the cotton. Furthermore, since the components on the machine body require high processing quality, the processing quality and surface quality of the sound insulation cotton must be guaranteed. In addition, because the sound insulation cotton is relatively thick, the perforating needles must have sufficient strength.
[0004] Existing tools for processing vent holes in sound insulation cotton directly attach the perforating needle to the handle. These tools have weak resistance to bending and deformation, making the needle tip prone to deformation, breakage, or complete detachment during use. This can scratch the sound insulation cotton, resulting in poor processing quality and low efficiency. Furthermore, the perforating needle is usually fixed by adhesive bonding, making it impossible to replace if damaged, rendering the tool unusable and increasing its cost. Utility Model Content
[0005] The purpose of this utility model is to provide a ventilation hole processing device that can avoid the problems of deformation, breakage and complete needle detachment of the piercing needle, and has a simple overall structure, safe and reliable operation, high processing efficiency and economic practicality.
[0006] To achieve this objective, the present invention adopts the following technical solution:
[0007] A ventilation hole processing apparatus is provided, comprising:
[0008] Fixed handle;
[0009] A fastener is detachably connected to the fixed handle. The fastener is provided with a stepped hole, which includes a small diameter section, a large diameter section, and a stepped surface. The large diameter section is located on the side closer to the fixed handle.
[0010] A piercing needle, comprising a needle tip and a needle tail connected to each other, wherein the diameter of the needle tail is larger than that of the needle tip, the piercing needle passes through one end of the larger diameter section into the stepped hole, the inner diameter of the smaller diameter section matches the outer diameter of the needle tip, the needle tip extends out of the stepped hole, the first end of the needle tail abuts against the stepped surface, and the second end of the needle tail abuts against the fixed handle.
[0011] As a preferred scheme of the vent hole processing device, the limiting piece is provided with a first groove, the needle tail part extends out of the large diameter section and is embedded in the first groove, the second end of the needle tail part abuts against the groove bottom of the first groove, and the side of the limiting piece away from the fixing piece abuts against the fixing handle.
[0012] As a preferred scheme of the vent hole processing device, the fixing handle comprises a fixing part provided with a second groove, the limiting piece and the fixing part are embedded in the second groove in sequence, and the side of the limiting piece away from the fixing part abuts against the groove bottom of the second groove.
[0013] As a preferred scheme of the vent hole processing device, the bottom of the second groove is provided with a first through hole, the fixing part is provided with a threaded hole, the limiting piece is provided with a second through hole, and a screw is sequentially threaded through the first through hole and the second through hole and is threadedly connected to the threaded hole.
[0014] As a preferred scheme of the vent hole processing device, the fixing handle is provided with a handle part at the end away from the second groove.
[0015] As a preferred scheme of the vent hole processing device, the end face of the fixing part away from the limiting piece is located in the second groove.
[0016] As a preferred scheme of the vent hole processing device, the perforating needle, the stepped hole and the first groove are at least two, and the perforating needle, the stepped hole and the first groove correspond to each other in one-to-one correspondence.
[0017] As a preferred scheme of the vent hole processing device, a transition part is arranged between the needle tip part and the needle tail part, and the outer diameter of the transition part gradually decreases in the direction of the needle tail part close to the needle tip part.
[0018] As a preferred scheme of the vent hole processing device, the needle tip angle of the needle tip part ranges from 10° to 30°.
[0019] As a preferred scheme of the vent hole processing device, the material of the perforating needle is bearing steel.
[0020] The beneficial effects of the vent hole processing device are as follows:
[0021] This utility model provides a ventilation hole processing device, which includes a perforating needle, a fixing member, and a fixing handle. The fixing member has a stepped hole, which includes a small-diameter section, a large-diameter section, and a stepped surface. The large-diameter section is located on the side near the fixing handle. The perforating needle includes a needle tip and a needle tail connected to each other. The diameter of the needle tail is larger than that of the needle tip. The perforating needle passes through the stepped hole at one end of the large-diameter section. The inner diameter of the small-diameter section matches the outer diameter of the needle tip, which can restrict the radial movement of the perforating needle, improve the bending resistance of the perforating needle, and prevent the perforating needle from deforming due to excessive force. The needle tip extends out of the stepped hole to perforate the sound insulation cotton. The first end of the needle tail abuts against the stepped surface, and the second end abuts against the fixing handle to fix the perforating needle and prevent the entire needle from falling off. Furthermore, the fixing member is detachably connected to the fixing handle, so that the perforating needle can be replaced when damaged, and the ventilation hole processing tool can continue to be used, reducing the cost of the ventilation hole processing tool. Finally, the fixed handle allows workers to easily hold the ventilation hole processing device while using it and conveniently place it after use. Furthermore, the device boasts a simple overall structure, safe and reliable operation, high processing efficiency, and is economical and practical. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the ventilation hole processing device provided in this embodiment of the utility model;
[0023] Figure 2 This is an exploded view of the ventilation hole processing device provided in this embodiment of the utility model;
[0024] Figure 3 This is a cross-sectional view of the ventilation hole processing device provided in this embodiment of the utility model;
[0025] Figure 4 This is a schematic diagram of the structure of the perforating needle provided in this embodiment of the utility model;
[0026] Figure 5 This is one of the structural schematic diagrams of the fastener provided in the embodiment of this utility model;
[0027] Figure 6 This is a second structural schematic diagram of the fastener provided in this embodiment of the utility model;
[0028] Figure 7 This is one of the structural schematic diagrams of the limiting member provided in the embodiment of this utility model;
[0029] Figure 8 This is one of the structural schematic diagrams of the fixed handle provided in the embodiment of this utility model;
[0030] Figure 9 This is the second schematic diagram of the fixed handle provided in this embodiment of the utility model;
[0031] Figure 10 Figure 2 is a structural schematic diagram of the limiting piece provided by the embodiment of the present application.
[0032] In the figure:
[0033] 1, perforating needle; 11, needle tip; 12, needle tail; 13, transition part;
[0034] 2, fixing piece; 21, stepped hole; 211, small diameter section; 212, large diameter section; 213, stepped surface; 22, threaded hole;
[0035] 3, fixed handle; 31, fixed part; 311, second groove; 32, hand holding part; 33, first through hole;
[0036] 4, limiting piece; 41, first groove; 42, second through hole;
[0037] 5, screw. DETAILED DESCRIPTION
[0038] The present application will be further described below in conjunction with the drawings and embodiments. It can be understood that the specific embodiments described herein are only used to explain the present application, and not to limit the present application. In addition, it should be noted that, in order to facilitate the description, only the parts related to the present application are shown in the drawings, not all the structures.
[0039] In the description of the present application, unless otherwise explicitly specified and limited, the terms "connected", "connected", "fixed" should be understood broadly, for example, it can be fixedly connected, or it can be detachably connected, or it can be integrated; it can be mechanically connected, or it can be electrically connected; it can be directly connected, or it can be indirectly connected through an intermediate medium; it can be the internal communication of two elements or the interaction relationship between two elements. For ordinary skilled in the art, the specific meaning of the above terms in the present application can be understood according to the specific circumstances.
[0040] In the present application, unless otherwise explicitly specified and limited, the first feature "on" or "below" the second feature can include the direct contact of the first and second features, or it can include the contact of the first and second features through another feature between them. Moreover, the first feature "on", "above" and "above" the second feature includes the first feature above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature. The first feature "below", "below" and "below" the second feature includes the first feature below and obliquely below the second feature, or only indicates that the horizontal height of the first feature is less than that of the second feature.
[0041] In the description of the present embodiment, the terms "upper", "lower", "right", "left", and the like, are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of description and simplification of operation, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first" and "second" are only used to distinguish in the description, and have no special meaning.
[0042] As shown in Figures 1-7 The present embodiment provides a ventilation hole processing device, which comprises a perforating needle 1, a fixing member 2 and a fixing handle 3. The fixing member 2 is provided with a stepped hole 21, the stepped hole 21 comprises a small-diameter section 211, a large-diameter section 212 and a stepped surface 213, the large-diameter section 212 is located on the side close to the fixing handle 3, the perforating needle 1 comprises a needle tip part 11 and a needle tail part 12 connected with each other, the diameter of the needle tail part 12 is larger than that of the needle tip part 11, the perforating needle 1 is arranged in the stepped hole 21 through one end of the large-diameter section 212, the inner diameter of the small-diameter section 211 matches the outer diameter of the needle tip part 11, which can limit the movement of the perforating needle 1 along its radial direction, improve the bending resistance of the perforating needle 1, and avoid deformation of the perforating needle 1 caused by excessive stress. The needle tip part 11 protrudes out of the stepped hole 21 to perforate the soundproof cotton. The first end of the needle tail part 12 abuts against the stepped surface 213, and the second end abuts against the fixing handle 3 to fix the perforating needle 1, which can avoid the whole needle from falling off. The fixing member 2 is detachably connected to the fixing handle 3, so that the perforating needle 1 can be replaced when it is damaged, and the ventilation hole processing tool can continue to be used, thereby reducing the cost of the ventilation hole processing tool. In addition, the fixing handle 3 is provided, which can facilitate the staff to hold the ventilation hole processing device during use and facilitate the placement after use. At the same time, the ventilation hole processing device has simple overall structure, safe and reliable operation, high processing efficiency and economic practicability.
[0043] Specifically, the inner diameter of the large-diameter section 212 matches the outer diameter of the needle tail part 12, so that the side wall of the needle tail part 12 is attached to the inner wall of the large-diameter section 212, which can improve the bending resistance of the needle tail part 12 and avoid deformation of the perforating needle 1 caused by excessive stress. The material of the fixing handle 3 is 6061-T651 aluminum alloy, which is relatively light in weight and avoids the ventilation hole processing device being too heavy to be operated. The material of the fixing member 2 is 45 steel, which has a hardness of HRC28-34 and a relatively high strength to resist the impact of the perforating needle 1 on the side wall of the stepped hole 21 during work. The fixing member 2 has a cylindrical structure.
[0044] Preferably, the ventilation hole processing device further comprises a limiting piece 4, the limiting piece 4 is provided with a first groove 41, the needle tail part 12 partially extends the large diameter section 212 and is embedded in the first groove 41, the second end of the needle tail part 12 abuts against the groove bottom of the first groove 41, and the side of the limiting piece 4 away from the fixing piece 2 abuts against the fixing handle 3. By arranging the limiting piece 4, the impact of the needle tail part 12 on the fixing handle 3 during work can be resisted, and damage to the fixing handle 3 caused by excessive impact can be avoided.
[0045] Specifically, the limiting piece 4 is a cylindrical structure, and the diameter of the limiting piece 4 is the same as the diameter of the fixing piece 2. The limiting piece 4 is made of 45 steel, and the hardness is HRC 34-40. The limiting piece 4 has higher strength to resist the impact of the needle tail part 12 and avoid damage to the limiting piece 4. The cross section of the first groove 41 is circular, and the inner diameter of the first groove 41 matches the outer diameter of the needle tail part 12, so that the side wall of the needle tail part 12 is fitted with the inner wall of the first groove 41, which can improve the bending resistance of the needle tail part 12 and avoid deformation of the perforating needle 1 caused by excessive stress.
[0046] Preferably, the perforating needle 1, the stepped hole 21 and the first groove 41 are at least two, and the perforating needle 1, the stepped hole 21 and the first groove 41 correspond one by one. By arranging multiple perforating needles 1 to perforate the sound insulation cotton at the same time, the work efficiency is improved.
[0047] Specifically, in the embodiment, the perforating needle 1, the stepped hole 21 and the first groove 41 are provided with 13, the 13 stepped holes 21 are uniformly distributed on the fixing piece 2, the first grooves 41 are uniformly distributed on the limiting piece 4 and correspond to the stepped holes 21, and one perforating needle 1 is arranged in each stepped hole 21. In other embodiments, the number of the perforating needle 1, the stepped hole 21 and the first groove 41 can be set according to actual conditions.
[0048] Preferably, as shown in Figure 3 and Figure 8 , the fixing handle 3 comprises a fixed part 31, the fixed part 31 is provided with a second groove 311, the limiting piece 4 and the fixing piece 2 are sequentially embedded in the second groove 311, the side of the limiting piece 4 away from the fixing piece 2 abuts against the groove bottom of the second groove 311, and the second groove 311 can limit the movement of the limiting piece 4 and the fixing piece 2 along the radial direction, facilitating the installation of the limiting piece 4 and the fixing piece 2.
[0049] Specifically, the fixed part 31 is a cubic structure, which is convenient for placing the ventilation hole processing device when not in use. The cross section of the second groove 311 is circular, and the inner diameter of the second groove 311 is the same as the diameter of the limiting piece 4 and the fixing piece 2, so that the side wall of the limiting piece 4 and the fixing piece 2 is fitted with the inner wall of the second groove 311, avoiding the movement of the limiting piece 4 and the fixing piece 2 along the radial direction.
[0050] Preferably, the end face of the fixing member 2 facing away from the limiting member 4 is located in the second groove 311. When perforating the sound insulation cotton, the end face of the fixing part 31 on one side of the second groove 311 contacts the sound insulation cotton. Since the end face of the fixing member 2 facing away from the limiting member 4 is located in the second groove 311, when the vent hole processing device is used to process the vent hole on the sound insulation cotton, there is a gap between the end face of the fixing member 2 facing away from the limiting member 4 and the sound insulation cotton. The fixing member 2 does not contact the sound insulation cotton, thus avoiding the sound insulation cotton debris generated during the working process from entering the stepped hole 21 and causing blockage.
[0051] Preferably, such as Figure 2 , Figure 6 , Figure 9 and Figure 10 As shown, the bottom of the second groove 311 is provided with a first through hole 33, the fixing member 2 is provided with a threaded hole 22, the limiting member 4 is provided with a second through hole 42, and the screw 5 is sequentially inserted into the first through hole 33 and the second through hole 42 and threadedly connected to the threaded hole 22 to abut and fix the limiting member 4, the fixing member 2 and the fixing part 31.
[0052] Specifically, there are two screws 5, two through holes 33, two through holes 42, and two threaded holes 22, which are spaced apart. Each screw 5 corresponds to one other screw 33, through hole 42, and threaded hole 22. By using two screws 5, the stability of the connection between the limiting member 4, the fixing member 2, and the fixing part 31 can be improved, preventing the limiting member 4 and the fixing member 2 from rotating. The screw 5 can be M4×25.
[0053] Preferably, such as Figure 2 , Figure 4 and 7 As shown, a handheld part 32 is provided at the end of the fixed handle 3 facing away from the second groove 311, which facilitates the operator's handhold when using the ventilation hole processing device. Specifically, the handheld part 32 is a round rod structure. The extending direction of the handheld part 32 is the same as the extending direction of the perforating needle 1. The handheld part 32 and the fixed part 31 are integrally formed.
[0054] Preferably, such as Figure 4 As shown, a transition portion 13 is provided between the needle tip 11 and the needle tail 12. The outer diameter of the transition portion 13 gradually decreases along the direction of the needle tail 12 towards the needle tip 11, so as to avoid stress concentration at the connection between the needle tip 11 and the needle tail 12, which would cause the piercing needle 1 to break and extend the service life of the piercing needle 1.
[0055] Preferably, the needle tip angle of the needle tip 11 is in the range of 10°-30°, so that the piercing needle 1 has a better piercing effect. In this embodiment, the needle tip angle of the piercing needle 1 is 20°. In other embodiments, the needle tip angle of the piercing needle 1 can also be 10°, 15°, 25° or 30°, etc.
[0056] Preferably, the material of the perforating needle 1 is bearing steel, which has high strength, so that the perforating needle 1 is not easy to deform, and the service life of the perforating needle 1 is improved. In the embodiment, the material type of the perforating needle 1 is high-strength bearing steel GCr6.
[0057] The vent hole processing device can also be applied to perforation of other materials such as foam, sponge and the like.
[0058] In use, the first step is to place the sound insulation cotton to be processed on the workbench; the second step is to align the position to be processed of the sound insulation cotton by holding the hand-held part 32 of the vent hole processing device; the third step is to ensure that the axial direction of the perforating needle 1 is perpendicular to the sound insulation cotton, so as to avoid uneven force and damage to the perforating needle 1; the fourth step is to vertically downwardly exert force, pull out the vent hole processing device after the processing of the vent hole, and continue to process the next vent hole.
[0059] Obviously, the above embodiments of the present application are merely examples for clear illustration of the present application, and are not intended to limit the embodiments of the present application. For those skilled in the art, various obvious changes, re-adjustments and substitutions can be made without departing from the protection scope of the present application. It is unnecessary and impossible to enumerate all the embodiments. Any modification, equivalent substitution and improvement within the spirit and principle of the present application shall be included in the protection scope of the present application.
Claims
1. A vent hole processing apparatus characterized by comprising: The vent hole processing device comprises: a fixed handle (3); a fixing piece (2) detachably connected to the fixed handle (3), the fixing piece (2) being provided with a stepped hole (21), the stepped hole (21) comprising a small-diameter section (211), a large-diameter section (212) and a stepped surface (213), the large-diameter section (212) being located on the side close to the fixed handle (3); a perforating needle (1) comprising a needle tip (11) and a needle tail (12) connected to each other, the diameter of the needle tail (12) being larger than that of the needle tip (11), the perforating needle (1) being arranged in the stepped hole (21) through one end of the large-diameter section (212), the inner diameter of the small-diameter section (211) matching the outer diameter of the needle tip (11), the needle tip (11) extending out of the stepped hole (21), the first end of the needle tail (12) abutting against the stepped surface (213), and the second end of the needle tail (12) abutting against the fixed handle (3).
2. The venting hole machining apparatus according to claim 1, wherein The vent hole processing device further comprises a limiting piece (4) provided with a first groove (41), the needle tail (12) partially extending out of the large-diameter section (212) and being embedded in the first groove (41), the second end of the needle tail (12) abutting against the groove bottom of the first groove (41), and the side of the limiting piece (4) away from the fixing piece (2) abutting against the fixed handle (3).
3. The venting hole machining apparatus according to claim 2, characterized by, The fixed handle (3) comprises a fixed part (31) provided with a second groove (311), the limiting piece (4) and the fixing piece (2) being embedded in the second groove (311) in sequence, and the side of the limiting piece (4) away from the fixing piece (2) abutting against the groove bottom of the second groove (311).
4. The venting hole machining apparatus according to claim 3, wherein The bottom of the second groove (311) is provided with a first through hole (33), the fixing piece (2) is provided with a threaded hole (22), the limiting piece (4) is provided with a second through hole (42), and a screw (5) is arranged in the first through hole (33) and the second through hole (42) in sequence and is threadedly connected to the threaded hole (22).
5. The venting hole machining apparatus according to claim 3, wherein The end of the fixed handle (3) away from the second groove (311) is provided with a hand holding part (32).
6. The venting hole machining apparatus according to claim 3, wherein The end surface of the fixing piece (2) away from the limiting piece (4) is located in the second groove (311).
7. The venting hole machining apparatus according to claim 2, wherein The perforating needle (1), the stepped hole (21) and the first groove (41) are at least two, and the perforating needle (1), the stepped hole (21) and the first groove (41) correspond to each other.
8. The venting hole machining apparatus according to any one of claims 1 to 7, characterized by A transition part (13) is arranged between the needle tip (11) and the needle tail (12), and the outer diameter of the transition part (13) gradually decreases in the direction of the needle tail (12) close to the needle tip (11).
9. The venting hole machining apparatus according to any one of claims 1 to 7, characterized by The needle tip angle of the needle tip (11) ranges from 10° to 30°.
10. The venting hole machining apparatus according to any one of claims 1 to 7, characterized by The material of the perforating needle (1) is bearing steel.