A protective cover for an aircraft type bimetallic punch

Abstract

The utility model discloses an aircraft type bimetallic trepanning device's protective cover belongs to trepanning device auxiliary fittings technical field, including upper cover body and the lower cover body of movable connection in upper cover body outside, the lower half of lower cover body outer wall is equipped with the thread groove, and the thread groove of lower cover body is connected with the fixed ring of outer thread, the bottom of fixed ring is equipped with the sealing groove, and the sealing ring is placed in sealing groove, the bottom of upper cover body is equipped with two guide holes, and the guide hole is movably connected with the limit slide block, the bottom of limit slide block is fixed with the support column, and the support spring for supporting limit slide block is arranged in the guide hole, and the limit ring of movable connection with support column is fixed in the guide hole. This aircraft type bimetallic trepanning device's protective cover, not only has good protection and dustproof effect, simultaneously can adapt to the trepanning operation requirement of different depth, uses more nimble and convenient.

Description

Technical Field

[0001] This utility model belongs to the technical field of hole opener auxiliary accessories, specifically relating to a protective cover for an aircraft-type bimetallic hole opener. Background Technology

[0002] Aircraft-type bimetallic hole saws are commonly used hole-making tools in the industrial processing field. They are widely used for hole-making operations on various workpieces such as metal sheets and pipes. Their bimetallic cutting heads have high cutting strength and durability, and can meet the hole-making needs of various materials.

[0003] However, in actual operation, traditional aircraft-type bimetallic hole saws generally suffer from a lack of protection or poor compatibility of protective devices. Most traditional hole saws are not equipped with dedicated protective covers, and the metal shavings and dust generated during the drilling process will fly out without any shielding. This not only poses a health threat to the operator's eyes and respiratory tract, but also adheres to the precision parts of surrounding equipment, affecting the operating accuracy and service life of the equipment. At the same time, the flying debris also poses a risk of damaging the surface of the equipment and causing safety accidents. Utility Model Content

[0004] The purpose of this utility model is to provide a protective cover for an aircraft-type bimetallic hole opener, so as to solve the problem mentioned in the background art that traditional aircraft-type bimetallic hole openers generally have insufficient protection or poor compatibility of protective devices.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a protective cover for an aircraft-type bimetallic hole opener, comprising an upper cover and a lower cover movably connected to the upper cover. The lower half of the outer wall of the lower cover is provided with a threaded groove, and a fixing ring is threadedly connected to the threaded groove of the lower cover. A sealing groove is provided at the bottom of the fixing ring, and a sealing ring is placed in the sealing groove. Two guide holes are provided at the bottom of the upper cover, and a limit slider is movably connected in the guide holes. A support column is fixed at the bottom of the limit slider, and a support spring for supporting the limit slider is provided in the guide holes.

[0006] In a further embodiment, the inner wall of the fixing ring is integrally formed with a support ring for supporting the support column, and the surface of the support ring is provided with a sliding groove for the support column to move.

[0007] In a further embodiment, the surface of the upper cover is provided with mounting holes, and a wear-resistant bearing is fixed in the mounting holes.

[0008] In a further embodiment, guide blocks are fixed on both outer walls of the upper cover, and guide grooves for the guide blocks to move are provided on both inner walls of the lower cover.

[0009] In a further embodiment, a limiting ring is fixed in the guide hole at the bottom of the upper cover, and the limiting ring is movably connected to the outside of the support column.

[0010] The technical effects and advantages of this utility model are as follows: The protective cover for this aircraft-type bimetallic hole saw has a sealing ring fitted at the bottom of the lower cover via a fixing ring. During hole-making operations, the sealing ring can fit tightly against the workpiece surface. Combined with the enclosed protective space formed by the upper and lower covers, it can effectively prevent metal chips and dust generated during the hole-making process from flying outwards. This not only avoids personal injury to the operator from the chips, but also prevents dust from entering the surrounding equipment, ensuring a clean working environment and safe operation of the equipment. At the same time, it can also reduce secondary wear of the hole saw cutter head caused by chips and dust, extending the service life of the hole saw. The guide blocks on both sides of the upper cover can move vertically along the guide groove on the inner wall of the lower cover, and the support column inside the upper cover can move in the sliding groove of the support ring on the inner wall of the fixed ring. With the support spring in the guide hole, when performing deep hole operation, the upper cover can retract into the lower cover. The support spring will generate elastic compression as the limit slider moves down, providing sufficient stroke for the feed of the hole opener. When the hole depth is shallow, the rebound force of the support spring can push the upper cover to return to its original position, always maintaining the protection range of the protective cover. This achieves adaptation to hole opening operations of different depths, eliminating the need for frequent disassembly and assembly of the protective cover, and improving operational flexibility. The cooperative structure of the guide block and guide groove not only restricts the movement path of the upper cover, ensuring its vertical lifting and lowering, but also prevents the upper cover from separating from the lower cover, thus improving the overall structural stability. The limiting ring in the guide hole can limit the limiting slider, preventing the support column from coming out of the guide hole, further ensuring the structural integrity of the protective cover and its long-term reliability. The protective cover for this aircraft-type bimetallic hole opener not only has good protection and dustproof effect, but also can adapt to the needs of hole opening operations at different depths, making it more flexible and convenient to use. Attached Figure Description

[0011] To more clearly illustrate the specific embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of this utility model; Figure 2 This is a schematic diagram of the structure of the fixing ring of this utility model; Figure 3 This is a structural schematic diagram of the upper cover and support column of this utility model; Figure 4 This is a schematic diagram of the support column and support spring of this utility model.

[0013] In the diagram: 1. Upper cover; 2. Lower cover; 3. Fixing ring; 4. Sealing ring; 5. Support ring; 6. Wear-resistant bearing; 7. Guide block; 8. Limiting slider; 9. Support column; 10. Support spring; 11. Limiting ring. Detailed Implementation

[0014] In the following description, numerous specific details are set forth in order to provide a more thorough understanding of the present invention. However, it will be apparent to those skilled in the art that the present invention can be practiced without one or more of these details. In other instances, certain technical features well-known in the art have not been described in order to avoid confusion with the present invention.

[0015] Unless otherwise defined, the directions mentioned herein, such as up, down, left, right, front, back, inside, and outside, are based on the directions shown in the figures of this utility model, and are explained here together.

[0016] This utility model provides, for example Figure 1-4 The protective cover for an aircraft-type bimetallic hole punch includes an upper cover 1 and a lower cover 2 movably connected to the outside of the upper cover 1. The lower half of the outer wall of the lower cover 2 has a threaded groove, and a fixing ring 3 is threadedly connected to the threaded groove of the lower cover 2. A sealing groove is formed at the bottom of the fixing ring 3, and a sealing ring 4 is placed in the sealing groove. During the punching process, the sealing ring 4 can fit tightly against the surface of the workpiece. Together with the upper cover 1 and the lower cover 2, it can play an effective sealing role and prevent dust generated during the punching process from leaking out. The surface of the upper cover 1 has a mounting hole, and a wear-resistant bearing 6 is fixed in the mounting hole to reduce rotational friction. Guide blocks 7 are fixed on both outer walls of the upper cover 1. Guide grooves for the guide blocks 7 to move are formed on both inner walls of the lower cover 2. The guide blocks 7 move in the guide grooves, which can restrict the movement path of the upper cover 1, ensure that the upper cover 1 can move vertically in the lower cover 2, and prevent the upper cover 1 from separating from the lower cover 2. Two guide holes are provided at the bottom of the upper cover 1, and a limiting slider 8 is movably connected in the guide holes. A support column 9 is fixed at the bottom of the limiting slider 8. A support spring 10 for supporting the limiting slider 8 is provided in the guide holes. A limiting ring 11 is fixed in the guide holes at the bottom of the upper cover 1. The limiting ring 11 is movably connected to the outside of the support column 9. The limiting ring 11 can restrict the position of the limiting slider 8 and prevent the limiting slider 8 from coming out of the guide holes. The inner wall of the fixing ring 3 is integrally formed with a support ring 5 for supporting the support column 9, and the surface of the support ring 5 is provided with a sliding groove for the support column 9 to move. During the drilling process, the support ring 5 supports the support column 9. During the downward drilling process, the upper cover 1 moves into the lower cover 2, and at the same time, the limiting slider 8 squeezes the support spring 10, so that the drilling bit can continue to move downward. Meanwhile, the sealing ring 4 at the bottom of the lower cover 2 is always in contact with the surface of the workpiece, so as to meet the drilling requirements of different depths while ensuring protection and dust prevention.

[0017] All standard parts used in this utility model can be purchased from the market, and irregular parts can be customized according to the description and drawings. The specific connection methods of each part adopt conventional methods such as bolts, rivets, and welding that are mature in the prior art. The machinery, parts and equipment adopt conventional models in the prior art. The contents not described in detail in this specification belong to the prior art known to those skilled in the art.

[0018] In the description of this utility model, it should be understood that the indicated orientation or positional relationship is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing this utility model and simplifying the description, and is not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0019] Working principle: The protective cover for the aircraft-type bimetallic hole opener is first assembled into the designated part of the aircraft-type bimetallic hole opener through the wear-resistant bearing 6 in the mounting hole of the upper cover 1, thus completing the connection and fixation between the protective cover and the hole opener. Before the hole opening operation, the sealing ring 4 at the bottom of the lower cover 2 of the protective cover is aligned with the surface of the workpiece to be opened and attached. At this time, the support ring 5 on the inner wall of the fixing ring 3 supports the support column 9, and the support spring 10 is in the initial extension state. After the hole opener is started, the hole opener head begins to cut the workpiece. As the hole opening operation progresses, the hole opener feeds into the workpiece, causing the upper cover 1 to move down synchronously. The guide blocks 7 on both sides of the upper cover 1 slide vertically along the guide groove of the lower cover 2. At the same time, the limiting slider 8 in the guide hole of the upper cover 1 moves up and squeezes the support spring 10, causing the support spring 10 to elastically contract. The support column 9 moves correspondingly in the sliding groove of the support ring 5. During this process, the sealing ring 4 at the bottom of the lower cover 2 always fits tightly against the surface of the workpiece, forming a closed space to prevent debris and dust from leaking out. After the drilling operation is completed, the drill retracts, and the rebound force of the support spring 10 pushes the limit slider 8 to reset, thereby driving the upper cover 1 to move upward to the initial position, completing the protection process of one drilling operation. If the sealing ring 4 needs to be replaced, the fixing ring 3 can be unscrewed directly, the sealing ring 4 in the sealing groove can be replaced, and then the fixing ring 3 can be tightened to continue use.

[0020] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A protective cover for an aircraft-type bimetallic aperture gate, comprising an upper cover (1) and a lower cover (2) movably connected to the outside of the upper cover (1), characterized in that: The lower half of the outer wall of the lower cover (2) is provided with a threaded groove, and a fixing ring (3) is connected to the threaded groove of the lower cover (2) by an external thread. A sealing groove is provided at the bottom of the fixing ring (3), and a sealing ring (4) is placed in the sealing groove. Two guide holes are provided at the bottom of the upper cover (1), and a limit slider (8) is movably connected in the guide holes. A support column (9) is fixed at the bottom of the limit slider (8), and a support spring (10) for supporting the limit slider (8) is provided in the guide hole.

2. The protective cover for an aircraft-type bimetallic hole opener according to claim 1, characterized in that: The inner wall of the fixed ring (3) is integrally formed with a support ring (5) for supporting the support column (9), and the surface of the support ring (5) is provided with a sliding groove for the support column (9) to move.

3. The protective cover for an aircraft-type bimetallic hole opener according to claim 1, characterized in that: The surface of the upper cover (1) is provided with mounting holes, and a wear-resistant bearing (6) is fixed in the mounting holes.

4. The protective cover for an aircraft-type bimetallic hole opener according to claim 1, characterized in that: The upper cover (1) has guide blocks (7) fixed on both outer walls, and the lower cover (2) has guide grooves on both inner walls for the guide blocks (7) to move.

5. The protective cover for an aircraft-type bimetallic hole opener according to claim 1, characterized in that: A limiting ring (11) is fixed in the guide hole at the bottom of the upper cover (1), and the limiting ring (11) is movably connected to the outside of the support column (9).

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